ISO 12642-1:1996

Graphic technology - Input data for characterization of 4-colour process printing - Part 1: Initial data set

Defines an input data file, a measurement procedure and an output data format for use in characterizing any four-colour printing process.

Technologie graphique — Données d'entrée pour caractérisation d'impression en quadrichromie — Partie 1: Ensemble de données initiales

Grafična tehnologija - Vhodni podatki za opis 4-barvnega tiska s procesnimi barvami - 1. del: Osnovni podatki (za profiliranje in certificiranje)

General Information

• Status: Withdrawn
• Publication Date: 25-Dec-1996
• Withdrawal Date: 25-Dec-1996
• ICS: 35.240.30 - IT applications in information, documentation and publishing
• ICS: 37.100.99 - Other standards related to graphic technology
• Technical Committee: ISO/TC 130 - Graphic technology
• Drafting Committee: ISO/TC 130/WG 2 - Prepress data exchange
• Current Stage: 9599 - Withdrawal of International Standard
• Start Date: 06-Jul-2011
• Completion Date: 13-Dec-2025
• Ref Project: SIST ISO 12642-1:2008 - Graphic technology - Input data for characterization of 4-colour process printing - Part 1: Initial data set

Relations

• Revised: ISO 12642-1:2011 - Graphic technology - Input data for characterization of four-colour process printing - Part 1: Initial data set
• Effective Date: 17-Oct-2009

Standards Content (Sample)

INTERNATIONAL
STANDARD
First edition
1996-l 2-l 5
Graphic technology - Prepress digital data
Input data for characterization
exchange -
of 4-colour process printing
Technologie graphique - tkhange de don&es num&iques de
- Donnkes d’en t&e pour caractbisa tion d’impression en
prkimpression
quadrichromie
Reference number
IS0 12642:1996(E)
IS0 12642:1996(E)
Contents
Page
. . .
III
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreword
iv
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Normative references
3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
................................................................................
4 Requirements
.................................. 2
4.1 Data set definition .
4.1.1 Basic ink value data set . .
.................................... 2
4.1.2 Extended ink value data set
..... ......................................... 7
4.1.3 User-defined data set
Colour measurement . .
4.2
.............................. 7
4.3 Data reporting .
..................................................................... 8
4.4 Data file format
Annexes
.................................. 11
A Application notes .
. . . . . . . . . . . . . . . . . . . . . . . . . . 15
B General description of keyword value file format
0 IS0 1996
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
IS0 12642:1996(E)
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Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work of
preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for which
a technical committee has been established has the right to be rep-
resented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 12642 was prepared by Technical Committee
lSO/TC 130, Graphic technology.
Annexes A and B of this International Standard are for information only.

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IS0 12642:1996(E)
Introduction
General background
The technical content of this International Standard is identical to the
American National Standard lT8.7/3-1993. The ANSI document resulted
from the joint efforts of an international industry group that included
participants representing a broad range of prepress vendors, film
manufacturers, and users. This group, initially identified as the DDES
(Digital Data Exchange Standards) Committee, later became the founders
of the ANSI IT8 (Image Technology) accredited standards committee which
is responsible for electronic data exchange standards in graphic arts
prepress.
In an environment in which colour information is passed between
electronic publishing systems, it is essential for colour to be defined in an
unambiguous manner. Substantial experimental evidence enables us to
conclude that, for fovea1 vision, this can be achieved by specifying the
mixture of three linearly independent stimuli required to match that colour.
In 1931 a complete system of colour definition was developed by the CIE
(Commission Internationale de I’Eclairage) based on experimental evidence
published in the previous decade. This evidence confirmed the similarity
between observers in making such a match. That system and its
derivatives are now universally accepted for colour specification.
Many half-tone colour printing processes, however, require more than
three colourants. There are two reasons for this. Generally the gamut of
colours achievable with three printing inks is rather limited, and printing
additional inks can extend the gamut significantly. Furthermore, the
provision of extra inks can reduce the magnitude of the visual change
caused by the variability in colour and register which arises in print
production. By far the most common additional ink used is black, and four-
colour process printing is accepted as the norm for most forms of printing.
The addition of an extra ink means that the production of a colour cannot,
in general, be defined uniquely. As a result, different parts of a printed
sheet may use varying ink combinations to achieve the same colour. For
many practical purposes it is desirable to specify this combination directly,
rather than encode it by rules, and this leads to the requirement to transfer
data in a four-colour, device-specific mode. If the same data is to be used
for other applications, or even if it needs to be modified for a different set
of printing characteristics, some additional information is necessary to
enable the receiver of the data to interpret it. This International Standard
has been developed to achieve this objective. It provides a data set which
can be transmitted with an image to enable the receiver, if required, either
to transform the data into a device-independent state or correct it for a
different printing characteristic. An alternative application of the tools pro-
iv
IS0 12642:1996(E)
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vided by this International Standard is to enable the characterization of
output systems and in this context work has been undertaken by the
committee to generate data for the major types of half-tone printing
processes which have been specified internationally. This procedure is
described in the application notes (annex A) and the data will be published
in future annexes.
The body of this International Standard defines the ink values to be used
for characterizing any four-colour (cyan, magenta, yellow, and black) half-
tone printing process (including gravure). These ink values are defined as
either digital data in a computer or half-tone tone values on film. This
requires that particular care be taken in the preparation of film to ensure
that the output device is properly “linearized” and the half-tone film values
match the numerical data in the computer file. For some applications the
film values used for linearization may be one or more generations removed
from the film produced by the film writer. The measurement procedures
and the data format to be used in determining and reporting tristimulus
values (X,Y,Z) are also included.
While the technique employed in this International Standard applies to all
output processes, the data has been optimized for four-colour half-tone
printing. For non-half-tone processes, or those which use colourants that
are significantly different from typical printing inks, the reference data file
should be determined in such a way that it provides reasonably uniform
colour differences when the data file is rendered. For a system which does
not meet the criterion, the user-optional data set could be utilized.
Suggestions for this are made in the application notes; however, they are
not part of this International Standard.
It should be noted that this International Standard does not define the
physical layout of the patches or their size. This is because any such
decision depends on the printing device to be used, and the area required
*for colour measurement. It is anticipated that a specific layout will be
produced to suit the needs of the user. However, in order to realize the
colours necessary for the measurements of specific printing processes to
be included as future annexes, it was necessary to produce a specific
layout. This layout, composed of four groups of patches, has been adopted
by both ANSI/CGATS and lSO/TC 130. Within TC 130 the digital data in the
appropriate format is contained in images S7 through SIO of the Standard
Colour Image Data (SCID), IS0 12640. For the guidance of others, this
layout is shown in figure A.I.
Technical background
Printing characteristics
Various efforts have been made over the past 20 years to reduce the
variation which occurs between printing presses. Initially, standards such
as IS0 2846 were developed to specify the colour of printing inks.
Subsequently, as a result of the lead of FOGRA/BVD in Germany,
significant effort has been made in developing specifications which define
constraints for the ink transfer onto paper. This is achieved by specifying
either the reflection density or the tristimulus values of a uniform (solid)
printed ink film, and by specifying tolerances around an optical density at
which various half-tone dot values should be reproduced. Within the
international printing community such specifications are widely recognized
and have become, in many cases, de facto printing standards. For

@ IS0
IS0 12642:1996(E)
magazine and periodical printing, SWOP (in the USA) and FIPP (in Europe)
are widely recognized standards. For commercial printing, the specifica-
tions of FOGRA and PIRA are widely known in Europe. Specifications are
also evolving for newspaper and heat-set web production. Future annexes
to this International Standard may contain the calorimetric tristimulus values
corresponding to these percent dot values when printed in accordance
with a number of such printing specifications. Such data can be used as
the basis for the conversion between ink values and tristimulus values.
It should be noted that any characterization of the process takes account
of all steps involved in print production. Thus it includes production of the
separations, any contacting operations which may be required and
platemaking. All of the printing specifications as referred to above include
recommendations for maintaining consistency of such operations to
ensure that validity of a characterization is maintained.
For characterizing printing conditions which differ from the published
specifications, two options exist. Either the large palette of colours can be
printed and measured, or the process can be modelled analytically. The
analytical modelling approach has the advantage that it requires far fewer
colour measurements; the disadvantages lie in the accuracy of prediction.
For many applications, a satisfactory compromise is achieved by using
modelling for the modification of published data. This is discussed in more
detail in the application notes.
Choice of colour palette
It is generally agreed that measurement of a reasonably large number of
colours is preferred for accurate characterization of any printing process. It
is not possible to be precise about how many colours are required; the
number will depend on many factors including the accuracy of colour
rendition required, the uniformity of spacing of the samples in terms of
colour, the type of modelling process used, and any nonlinear
However, practical
characteristics of a specific printing process.
experience suggests that measuring all combinations of six levels each for
cyan, magenta, yellow, and black, preferably weighted towards lower half-
tone dot values, will frequently prove adequate. Generally, for higher levels
of black, the number of samples may be considerably reduced since the
colour difference between samples is very small. With the addition of
single colour scales which contain extra values to assist in defining local
nonlinearity,
the accuracy obtained for most printing processes is
adequate.
A reduced-size data set may be used if:
- a less accurate characterization is adequate;
- the process ca n be modelled accurately by one of the well-kn own
mod els listed in the application notes;
- the aim of the measurement is to seek small corrections to an already
accurate characterization.
The advantages of this approach are that the measurement effort is
substantially lower and that the file size of the data is greatly reduced. This
can be advantageous when images are compressed although, in general,
even the larger file is small compared to most images
The proposal accepted for this International Standard defines a colour
palette consisting of 928 combinations of cyan, magenta, yellow, and black
vi
IS0 12642:1996(E)
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ink values. It is this palette (hereafter called the extended ink value data
set) which has been measured to provide colour characterization data on
the major printing specifications.
Where such an extensive set of data is not required, a subset of this
palette which consists of 182 colours (hereafter called the basic ink value
data set) is specified. It provides data suited to a variety of modelling
methods and generally provides excessive data for any specific method. It
is sufficient for almost all published modelling methods.
For a characterization which cannot be achieved with the data sets defined
in this International Standard, provision is made for a user-optional set of
any size. The format of the data is defined in this International Standard.
It is anticipated that the basic data set will be the default file supplied in
the header of image files to be exchanged, and that by prior agreement,
one of the larger palettes may be provided when required. It is the intent
of ANSI lT8/CGATS and of lSO/TC 130 to work with those organizations
responsible for various printing definitions (SWOP, FOGRA, etc.) to
develop tables of colour data that are agreed to be representative of the
named printing conditions. When such data are available and published by
ISO, such data can be referenced as “named” data. This means the
published data should be used by the receiver and the file need not be
sent. For many applications it is expected that the use of named data sets
will suffice.
VII
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-
IS0 12642:1996(E)
INTERNATIONAL STANDARD 0 IS0
Graphic technology - Prepress digital data exchange -
Input data for characterization of 4-colour process printing
1 Scope
This International Standard defines an input data file, a measurement procedure and an output data format for use
in characterizing any four-colour printing process.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the editions indicated were valid. All standards are subject to
revision, and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0
maintain registers of currently valid International Standards.
I SO/I EC 646: 1991, Information technology - IS0 7-bit coded character set for information interchange.
IS0 12640: -I), Graphic technology - Prepress digital data exchange - Standard co/our image data (SC/D).
Spectral measurement and calorimetric computation for graphic arts
IS0 13655:1996, Graphic technology -
images.
3 Definitions
For the purposes of this International Standard, the following definitions apply.
3.1 CIE tristimulus values: Amounts of the three reference colour stimuli, in the CIE-specified trichromatic
system, required to match the colour of the stimulus considered.
In the 1931 CIE standard calorimetric system, the tristimulus values are represented by the symbols X, Y, 2.
NOTE -
3.2 colour gamut: Subset of perceivable colours reproducible by a device or medium.
3.3 half-tone dots: Dots which vary in spatial frequency or size thereby producing an image of tonal gradation.
Half-tone dots are normally quantified by the percentage area they cover. Measurement of dot area is normally
made on film separations and is derived from the Murray-Davies equation.
3.4 keyword value file: File that makes use of predefined keywords and data tables to exchange data in an open
extensible manner.
I) To be published.
@ IS0
IS0 12642:1996(E)
r images using three or more printing inks. The normal process
35 process colou r printing : Reproducing colou
yellow, and bl ack.
i n’ks consist of magenta,
cyan,
3.6 ink value: Digital file value which represents the amount of a colourant required in a rendering process. For
the half-tone printing process this is equivalent to the dot area of the half-tone film expressed as a percentage.
3.7 white space: Space in a data file occupied by characters which do not print. Typical examples are space
(position 2/O of lSO/IEC 646), carriage return (position O/13 of lSO/lEC 646) newline (position O/l 0 of lSO/lEC 646),
and tab (position O/9 of lSO/IEC 646).
4 Requirements
4.1 Data set definition
Two sets of ink values are specified which span, with differing intervals, the colour space defined by combinations
of cyan, magenta, yellow, and black dot area percentages. The basic data set, which is a subset of the extended
data set, shall be the default set in the absence of any other information; the extended data set (or subsets of it)
may be used if specified. The data is defined as digital data and does not exist as printed images (or sets of
separations). However, the calorimetric values needed to produce the colour characterization data file may be
determined by printing images which have been made from films containing half-tone values corresponding to the
values in the ink value data set.
4.1.1 Basic ink value data set
The cyan, magenta, yellow, and black ink values specified in this set, and their identification (ID) numbers, shall be
as listed in table 1.
NOTE - The sample location information included in table 1 is based on the printing layout shown in figure A.1 and is
included for information only.
4.12 Extended ink value data set
The extended data set shall include the values of table 1 as well as those of table 2.
NOTE - ocation information included in table 2 is based on the printing layout shown in figure A.1 and is
The sample
included for information only.

IS0 12642:1996(E)
0 IS0
Table 1 - Basic ink value data set
Sample % Dot Sample % Dot
Sample % Dot
M
ID .ocation * C M Y K ID -ocation* C Y K ID -0catiot-P C M Y K
1 0 62 OEIO 0 0 15 0 123 OJO6 100 85 T 80
OAOI 100 o- 0
OEII 0 0 10 124 100 85 85 60
2 OA02 0 100 0 0 63 0 OJ07
OE12 0 0 7 0 125 OJO8 80 65 65 100
3 OA03 0 0 100 0 64
OE13 0 0 3 65 80
4 OA04 100 100 0 0 65 0 126 OJO9 80 65
66 OF01 0 0 0 90 127 OJIO 80 65 65 60
5 OA05 100 0 100 0
OF02 0 0 0 80 128 65 65 40
6 0806 0 100 100 0 67 OJII 80
0 68 OF03 0 0 0 70 129 OJ12 60 45 45 100
7 OA07 100 100 100
OF04 0 0 0 60 130 45 80
8 OA08 70 70 0 0 69 OJ13 60 45
70 OF05 0 0 0 50 131 45 45 60
9 OAO9 70 0 70 0 OK01 60
71 OF06 0 0 0 40 132 40
10 OAIO 0 70 70 0 OK02 60 45 45
72 OF07 0 0 0 30 133 45 20
11 OAII 40 40 0 0 OK03 60 45
OF08 0 0 25
12 OA12 0 40 40 0 73 0 134 OK04 40 27 27 100
74 OF09 0 0 0 20 27
13 OA13 40 40 40 0 135 OK05 40 27 80
14 OBOI 40 0 40 0 75 OF10 0 0 0 15 136 OK06 40 27 27 60
OF11
15 OB02 20 20 0 0 76 0 0 0 10 137 OK07 40 27 27 40
16 OB03 20 0 20 0 77 OF12 0 0 0 7 138 OK08 40 27 27 20
17 OB04 0 20 20 0 78 OF13 0 0 0 3 139 OK09 40 27 27 10
18 OB05 100 0 0 100 79 OGOI 40 100 0 0 140 OK10 20 12 12 100
19 OB06 0 100 0 100 80 OG02 40 100 40 0 141 OK11 20 12 12 80
20 0807 0 0 100 100 81 OG03 0 100 40 0 142 OK12 20 12 12 60
21 OB08 100 100 0 100 82 OG04 40 100 100 0 143 OK13 20 12 12 40
22 OB09 100 0 100 100 83 OG05 0 40 100 0 144 OLOI 20 12 12 20
23 OBIO 0 100 100 100 84 OG06 40 40 100 0 145 OLO2 20 12 12 10
24 OBII 100 100 100 100 85 OG07 70 70 70 0 146 OLO3 10 6 6 100
25 OB12 0 0 0 100 86 OG08 40 0 100 0 147 OLO4 10 6 6 80
26 OB13 ‘aper 87 OG09 100 40 100 0 148 OLO5 10 6 6 60
27 90 0 0 0 88 OGIO 100 0 40 0 149 OL06 10 6 6 40
OCOI
28 oco2 80 0 0 0 89 OGII 100 40 40 0 150 OLO7 10 6 6 20
29 70 0 0 0 90 OG12 100 40 0 0 151 OL08 10 6 6 10
oco3
30 oco4 60 0 0 0 91 OG13 100 100 40 0 152 OLO9 100 85 85 0
50 0 0 0 92 OH01 70 100 20 0 153 OLIO 80 65 65 0
31 oco5
32 OC06 40 0 0 0 93 OH02 20 70 20 0 154 OLII 60 45 45 0
30 0 0 0 94 OH03 20 70 40 0 155 OL12 40 27 27
33 oco7 0
34 25 0 0 0 95 OH04 20 100 70 0 156 OL13 20 12 12 0
OC08
20 0 0 0 96 OH05 20 70 70 0 157 OMOI 10 6
35 oco9 6 0
36 15 0 0 0 97 OH06 20 70 100 0 158 OM02 3
OCIO 5 3 0
0 98 OH07 20 20 70 0 159
37 OCII 10 0 0 OM03 100 0 0 20
38 7 0 0 0 99 OH08 70 20 100 0 160 OM04
oc12 0 100 0 20
100 OH09 70 20
39 oc13 3 0 0 0 70 0 161 OM05 0 0 100 20
0 101 OHIO 100 20 70
40 ODOI 0 90 0 0 162 OM06 100 100 0 20
OH11
41 OD02 0 80 0 0 102 70 20 20 0 163 OM07 100 0 100 20
OH12
42 0003 0 70 0 0 103 100 70 20 0 164 OM08 0 100 100 20
43 OD04 0 60 0 0 104 OH13 70 70 20 0 165 OM09 40 40 0 20
44 OD05 0 50 0 0 105 0101 70 100 70 0 166 OMIO 40 0 40 20
45 OD06 0 40 0 0 106 0102 40 70 40 0 167 OMII 0 40 40 20
46 OD07 0 30 0 0 107 0103 20 40 20 0 168 OM12 100 100 0 40
47 OD08 0 25 0 0 108 0104 70 100 100 0 169 OM13 100
0 100 40
48 OD09 0 20 0 0 109 0105 20 40 40 0 170 ON01 0
100 100 40
49 ODIO 0 15 0 0 110 0106 70 70 100 0 171 ON02 40
40 0 40
50 ODII 0 IO 0 0 111 0107 40 40 0 172 ON03 40
7Q 0 40 40
51 OD12 0 7 0 0 112 0108 20 20 40 0 173
ON04 0 40 40 40
52 OD13 0 3 0 0 113 0109 20 20 20 0 174 ON05
100 0 0 70
53 0 0 90 0 114 0110 100 70 100
OEOI 0 175 ON06 0 100 0 70
54 OE02 0 0 80 0 115 0111 70 40 70 0 176
ON07 0 0 100 70
55 0 70 0 116 0112 40 20 40
OE03 0 0 177 ON08 100 100 0 70
56 0 0 60 0 117 0113 100 70 70 178
OE04 0 ON09 100 0 100 70
0 118 OJOI 40 40 20
57 OE05 0 0 50 0 179 ON10 0 100 100 70
5e 0 0 40 0 119 OJ02 100 100 70 0
OE06 180 ON11 40 40 0 70
0 120 OJ03 40 20 20
5s OE07 0 0 30 0 181 ON12 40 0 40 70
25 0 121 OJ04 70 40 40
6C OE08 0 0 0 182 ON13 0 40 40 70
122 OJ05
61 OE09 0 0 20 0 100 85 85 100
Location data is included for information only.

IS0 12642:1996(E) 0 IS0
Table 2 - Extended ink value data set
Sample % Dot Sample % Dot Sample % Dot
K ID Location* C M Y K
ID Location* C M Y K ID Location* C M Y
323 4F3 100 20 40 0
1Al 0 0 0 0 253 2F5 100 70 10 0
10 0 324 4F4 100 40 40 0
184 IA2 0 IO 0 0 254 2F6 100 100
325 4F5 100 70 40 0
IA3 0 20 0 0 255 3Al 0 0 20 0
20 0 326 4F6 100 100 40 0
186 IA4 0 40 0 0 256 3A2 0 10
327 5Al 0 0 70 0
lA5 0 70 0 0 257 3A3 0 20 20 0
20 0 328 5A2 0 10 70 0
188 IA6 0 100 0 0 258 3A4 0 40
329 5A3 0 20 70 0
1Bl 10 0 0 0 259 3A5 0 70 20 0
20 0 330 5A4 0 40 70 0
190 182 10 10 0 0 260 3A6 0 100
5A5 0 70 70 0
10 20 0 0 261 3Bl 10 0 20 0 331
191 lB3
5A6 0 100 70 0
10 40 0 0 262 3B2 10 10 20 0 332
192 lB4
0 70 0
70 0 0 263 3B3 10 20 20 0 333 5Bl 10
193 lB5 10
5B2 10 IO 70 0
10 100 0 0 264 3B4 10 40 20 0 334
194 lB6
20 70 0
0 0 0 265 3B5 10 70 20 0 335 5B3 10
195 1Cl 20
336 5B4 10 40 70 0
x2 20 IO 0 0 266 3B6 10 100 20 0
70 70 0
20 0 0 267 3Cl 20 0 20 0 337 5B5 10
197 lC3 20
5B6 10 100 70 0
20 40 0 0 268 3C2 20 10 20 0 338
198 lC4
70 0
0 269 3c3 20 20 20 0 339 5Cl 20 0
199 lC5 20 70 0
10 70 0
100 0 0 270 3c4 20 40 20 0 340 5C2 20
200 lC6 20
70 0
0 271 3c5 20 70 20 0 341 5c3 20 20
201 1Dl 40 0 0
70 0
0 272 3C6 20 100 20 0 342 5c4 20 40
202 102 40 10 0
273 3Dl 40 0 20 0 343 5c5 20 70 70
203 ID3 40 20 0 0
70 0
0 274 3D2 40 10 20 0 344 SC6 20 100
204 104 40 40 0
275 3D3 40 20 20 0 345 501 40 0 70
205 ID5 40 70 0 0
276 304 40 40 20 0 346 502 40 10 70
206 ID6 40 100 0 0
40 70 20 0 347 5D3 40 20 70 0
207 1El 70 0 0 0 277 305
278 306 40 100 20 0 348 5D4 40 40 70
208 lE2 70 10 0 0
70 0 20 0 349 5D5 40 70 70 0
209 lE3 70 20 0 0 279 3El
280 3E2 70 10 20 0 350 5D6 40 100 70
210 lE4 70 40 0 0
20 20 0 351 5El 70 0 70 0
211 lE5 70 70 0 0 281 3E3 70
70 40 20 0 352 5E2 70 10 70 0
212 lE6 70 100 0 0 282 3E4
70 20 0 353 5E3 70 20 70 0
213 lF1 100 0 0 0 283 3E5 70
70 100 20 0 354 5E4 70 40 70 0
214 IF2 100 10 0 0 284 3E6
20 0 355 5E5 70 70 70 0
215 IF3 100 20 0 0 285 3Fl 100 0
10 20 0 356 5E6 70 100 70 0
216 IF4 100 40 0 0 286 3F2 100
20 0 357 5Fl 100 0 70 0
217 IF5 100 70 0 0 287 3F3 100 20
20 0 358 5F2 100 10 70 0
218 IF6 100 100 0 0 288 3F4 100 40
359 SF3 100 20 70 0
2Al 0 0 10 0 289 3F5 100 70 20 0
20 0 360 5F4 100 40 70 0
220 2A2 0 10 10 0 290 3F6 100 100
40 0 361 5F5 100 70 70 0
221 2A3 0 20 10 0 291 4Al 0 0
40 0 362 5F6 100 100 70 0
222 2A4 0 40 10 0 292 4A2 0 10
363 6Al 0 0 100 0
2A5 0 70 10 0 293 4A3 0 20 40 0
364 6A2 0 10 100 0
2A6 0 100 10 0 294 4A4 0 40 40 0
0 20 100 0
0 10 0 295 4A5 0 70 40 0 365 6A3
225 2Bl 10
6A4 0 40 100 0
10 10 10 0 296 4A6 0 100 40 0 366
226 2B2
100 0
0 297 4Bl 10 0 40 0 367 6A5 0 70
227 2B3 10 20 10
0 100 100 0
40 10 0 298 4B2 10 10 40 0 368 6A6
228 2B4 10
10 20 40 0 369 6Bl 10 0 100 0
229 2B5 IO 70 10 0 299 4B3
300 484 10 40 40 0 370 6B2 10 10 100
230 2B6 10 100 10 0
70 40 0 371 683 10 20 100 0
231 2Cl 20 0 10 0 301 4B5 10
100 40 0 372 6B4 10 40 100 0
232 2c2 20 10 10 0 302 4B6 10
40 0 373 6B5 10 70 100 0
233 2C3 20 20 10 0 303 4Cl 20 0
40 0 374 6B6 10 100 100 0
234 2C4 20 40 10 0 304 4C2 20 IO
375 6Cl 20 0 100 0
235 2C5 20 70 IO 0 305 4c3 20 20 40 0
236 2C6 20 100 10 0 306 4c4 20 40 40 0 376 6C2 20 10 100 0
237 201 40 0 10 0 307 4c5 20 70 40 0 377 6C3 20 20 100 0
378 6C4 20 40 100 0
2D2 40 10 10 0 308 4C6 20 100 40 0
239 203 40 20 10 0 309 401 40 0 40 0 379 6C5 20 70 100 0
6C6 20 100 100 0
40 40 10 0 310 402 40 10 40 0 380
240 204
0 0
205 40 70 10 0 311 403 40 20 40 0 381 601 40 100
242 206 40 100 10 0 312 4D4 40 40 40 0 382 6D2 40 10 100 0
0 10 0 313 405 40 70 40 0 383 6D3 40 20 100
243 2El 70
244 2E2 70 10 10 0 314 4D6 40 100 40 0 384 6D4 40 40 100 0
20 10 0 315 4El 70 0 40 0 385 6D5 40 70 100 0
245 2E3 70
100 0
0 316 4E2 70 10 40 0 386 6D6 40 100
246 2E4 70 40 10
70 10 0 317 4E3 70 20 40 0 387 6El 70 0 100
247 2E5 70
248 2E6 70 100 318 40 6E2 100 0
10 0 4E4 70 40 0 388 70 IO
100 0 10 0 319 4E5 70 70 40 0 389 6E3 70 20 100
249 2Fl
250 2F2 100 IO 10 0 320 40 100 0
4E6 70 100 40 0 390 6E4 70
251 2F3 100 20 0
IO 0 321 4Fl 100 0 40 0 391 6E5 70 70 100
252 2F4 100 40 100 0
10 0 322 4F2 100 IO 40 0 392 6E6 70 100

0 IS0 IS0 12642:1996(E)
Table 2 (continued,,
% Dot % Dot Sample % Dot
Sample
M Y K
ID -ocation* C M Y K ID -ocation* C M Y K ID -ocation* C
393 Tr 0 100 0 463 8E5 70 70 10 20 533 lOE3 70 20 40 -7r
6Fl
0 464 8E6 70 100 10 20 534 lOE4 70 40 40 20
394 6F2 100 IO 100
20 100 0 465 8Fl 100 0 10 20 535 lOE5 70 70 40 20
395 6F3 100
100 0 466 8F2 100 10 IO 20 536 lOE6 70 100 40 20
396 6F4 100 40
100 70 100 0 467 8F3 100 20 10 20 537 IOFI 100 0 40 20
397 6F5
100 0 468 8F4 100 40 10 20 538 lOF2 100 10 40 20
398 6F6 100 100
0 20 469 8F5 100 70 IO 20 539 lOF3 100 20 40 20
399 7Al 0 0
470 8F6 100 100 IO 20 540 lOF4 100 40 40 20
400 7A2 0 IO 0 20
0 20 471 9Al 0 0 20 20 541 lOF5 100 70 40 20
401 7A3 0 20
20 472 9A2 0 IO 20 20 lOF6 100 100 40 20
402 7A4 0 40 0 542
20 473 9A3 0 20 20 20 543 IIAI 0 0 70 20
403 7A5 0 70 0
474 9A4 0 40 20 llA2 0 10 70 20
404 7A6 0 100 0 20 20 544
20 475 9A5 0 70 20 20 llA3 0 20 70 20
405 7Bl 10 0 0 545
0 llA4
406 782 10 10 0 20 476 9A6 100 20 20 546 0 40 70 20
477 9Bl 10 0 llA5
407 7B3 IO 20 0 20 20 20 547 0 70 70 20
408 7B4 10 40 0 20 478 9B2 IO 10 20 20 548 llA6 0 100 70 20
10 IIBI
409 785 10 70 0 20 479 9B3 20 20 20 549 10 0 70 20
410 7B6 10 100 0 20 480 9B4 10 40 20 20 550 llB2 10 10 70 20
9B5 10 70
411 7Cl 20 0 0 20 481 20 20 551 llB3 10 20 70 20
412 7C2 20 10 0 20 482 9B6 10 100 20 20 552 llB4 10 40 70 20
413 7c3 20 20 0 20 483 9Cl 20 0 20 20 553 llB5 10 70 70 20
414 7c4 20 40 0 20 484 9c2 20 IO 20 20 554 llB6 10 100 70 20
415 7c5 20 70 0 20 485 9c3 20 20 20 20 555 IICI 20 0 70 20
/
416 7C6 20 100 0 20 486 9c4 20 40 20 20 556 llC2 20 IO 70 20
417 7Dl 40 0 0 20 487 9c5 20 70 20 20 557 llC3 20 20 70 20
418 7D2 40 10 0 20 488 9C6 20 100 20 20 558 llC4 20 40 70 20
419 7D3 40 20 0 20 489 9Dl 40 0 20 20 559 llC5 20 70 70 20
40 40 0 20 490 9D2 40 10 20 20 560 llC6 20 100 70 20
420 7D4
421 705 40 70 0 20 491 9D3 40 20 20 20 561 IIDI 40 0 70 20
0 20 492 9D4 40 40 20 20 562 llD2 40 10 70 20
422 7D6 40 100
,
0 0 20 493 9D5 40 70 20 20 563 llD3 40 20 70 20
423 7El 70
20 494 9D6 40 100 20 20 564 llD4
424 7E2 70 10 0 40 40 70 20
0 20 495 9El 70 0 20 20 565 llD5 40 70 20
425 7E3 70 20 70
20 496 9E2 70 IO 20 20 566 l-lD6
426 7E4 70 40 0 40 100 70 20
20 497 9E3 70 20 20 20 567 IIEI 70
427 7E5 70 70 0 0 70 20
70 40 20
428 7E6 70 100 0 20 49E 9E4 20 568 11E2 70 10 70 20
49s 9E5 70 70 20 20 569 llE3
429 7Fl 100 0 0 20 70 20 70 20
43c 7F2 100 10 0 20 5oc 9E6 100 20 20 570 llE4 70 40 70 20
501 9Fl 100 0 20 20 571 llE5
431 7F3 100 20 0 20 70 70 70 20
9F2
432 7F4 100 40 0 20 502 100 10 20 20 572 llE6 70 100 70 20
9F3 100 20 20 IIFI
433 7F5 100 70 0 20 503 20 573 100 0 70 20
434 7F6 100 100 0 20 504 9F4 100 40 20 20 574 llF2 100 10 70 20
435 8Al 0 0 10 20 505 9F5 100 70 20 20 575 1 IF3 100 20 70 20
43E 8A2 0 10 10 20 50E 9F6 100 100 20 20 576 1 IF4 100 40 70 20
IOAI
437 8A3 0 20 IO 20 507 0 0 40 20 577 llF5 100 70 70 20
43E 8A4 0 40 10 20 50E lOA 0 IO 40 20 578 llF6 100 100 70 20
43s 8A5 0 70 10 20 50: lOA 0 20 40 20 579 12Al 0 0 100 20
44c 8A6 0 100 10 20 5lC lOA 0 40 40 20 580 12A2 0 IO 100 20
441 8Bl 10 0 10 20 511 lOA 0 70 40 20 58-l 12A3 0 20 100 20
442 8B2 10 10 IO 20 512 lOA 0 100 40 20 582 12A4 0 40 100 20
44: 8B3 10 20 10 20 51: IOBI 10 0 40 20 583 12A5 0 70 100 20
444 8B4 10 40 10 20 514 lOB2 10 10 40 20 584 12A6 0 100 100 20
445 8B5 IO 70 IO 20 51E lOB3 IO 20 40 20 585 12Bl 10 0 20
446 8B6 10 100 10 20 516 lOB4 10 40 40 20 586 12B2 10 10 100 20
447 20 0 10 20 517 lOB5 10 70 40 20 587 12B3
8Cl 10 20 100 20
44E 8C2 20 10 10 20 51E lOB6 10 100 40 20 588 12B4
10 40 100 20
44: 20 10 20 51s IOCI 20 0 40 20 12B5
8C3 20 589 10 70 100 20
45c 20 40 IO 20 52C lOC2 20 10 40 20 590 12B6
8C4 10 100 100 20
20 521 lOC3 20 .20 40 20
451 8C5 20 70 10 591 12Cl 20 0 100 20
)
20 522 lOC4 20 40 40 20
45; 8C6 20 100 10 592 12c2 20 IO 100 20
52; i lOC5 20 70 40
45: 801 40 0 10 20 20 593 12C3 20 20 100 20
c lOC6 20 100 40
45L 8D2 40 10 10 20 52L 20 594 12C4 20 40 100 20
IODI 0
455 8D3 40 20 10 20 525 j 40 40 20 595 12C5 20 70 100 20
j lOD2 40 10 40
456 8D4 40 40 10 20 52E 20 596 12C6 20 100 100 20
45; 8D5 40 70 10 20 52; lOD3 40 40 20 597 12Dl 40 0 100 20
40 40 40
45f 8D6 40 100 10 20 52f 3 lOD4 20 598 12D2 40 10 100 20
45: 8El 70 0 10 20 525 3 1005 40 40 20 599 1203 40 20 100 20
40 100
46( 8E2 70 10 10 20 53c > lOD6 40 20 600 12D4 40 40 100 20
461 8E3 70 20 IO 20 531 I IOEI 70 40 20 601 12D5 40 70 100 20
?
IO
46; 8E4 70 40 10 20 53; lOE2 70 40 20 602 12D6 40 100 100 20

IS0 12642:1996(E) 0 IS0
Table 2 (continued)
% Dot Sample % Dot Sample % Dot
Sample
ID LocatIon* C M Y K ID Location* C M Y K ID Location* C M Y K
603 12El 70 0 100 20 673 15B4 20 70 40 40 743 18A4 0 70 0 60
604 12E2 70 10 100 20 674 15B5 20 100 40 40 744 18A5 0 100 0 60
605 12E3 70 20 100 20 675 15Cl 40 0 40 40 745 18Bl 20 0 0 60
606 12E4 70 40 100 20 676 15C2 40 20 40 40 746 18B2 20 20 0 60
607 l2E5 70 70 100 20 677 15c3 40 40 40 40 747 18B3 20 40 0 60
608 12E6 70 100 100 20 678 15c4 40 70 40 40 748 18B4 20 70 0 60
609 12Fl 100 0 100 20 679 15c5 40 100 40 40 749 18B5 20 100 0 60
610 12F2 100 10 100 20 680 15Dl 70 0 40 40 750 18Cl 40 0 0 60
611 12F3 -loo 20 100 20 681 15D2 70 20 40 40 751 18C2 40 20 0 60
612 12F4 100 40 100 20 682 1503 70 40 40 40 752 18C3 40 40 0 60
613 12F5 100 70 100 20 683 15D4 70 70 40 40 753 18C4 40 70 0 60
614 12F6 100 100 100 20 684 15D5 70 100 40 40 754 18C5 40 100 0 60
615 13Al 0 0 0 40 685 15El 100 0 40 40 755 1801 70 0 0 60
616 13A2 0 20 0 40 686 15E2 100 20 40 40 756 18D2 70 20 0 60
617 13A3 0 40 0 40 687 15E3 100 40 40 40 757 18D3 70 40 0 60
618 13A4 0 70 0 40 688 15E4 100 70 40 40 758 18D4 70 70 0 60
619 13A5 0 100 0 40 689 15E5 100 100 40 40 759 l8D5 70 100 0 60
620 13Bl 20 0 0 40 690 16Al 0 0 70 40 760 18El 100 0 0 60
621 13B2 20 20 0 40 691 16A2 0 20 70 40 761 18E2 100 20 0 60
622 1383 20 40 0 40 692 16A3 0 40 70 40 762 18E3 100 40 0 60
623 13B4 20 70 0 40 693 16A4 0 70 70 40 763 18E4 100 70 0 60
624 13B5 20 100 0 40 694 16A5 0 100 70 40 764 18E5 100 100 0 60
625 13Cl
40 0 0 40 695 16Bl 20 0 70 40 765 19Al 0
0 20 60
626 13C2 40 20 0 40 696 16B2 20 20 70 40 766 19A2
0 20 20 60
627 13c3 40 40 0 40 697 16B3 20 40 70 40 767 19A3
0 40 20 60
628 13c4 40 70 0 40 698 16B4 20
70 70 40 768 19A4 0 70 20 60
629 13c5 40 100 0 40 699 16B5 20 100 70 40 769
19A5 0 100 20 60
630 1301
70 0 0 40 700 16Cl 40 0 70 40 770
1981 20 0 20 60
631 1302 70 20 0 40 701 16C2 40 20 70 40 771
19B2 20 20 20 60
632 13D3 70 40 0 40 702 16C3 40 40 70
40 772 19B3 20 40 20 60
633 1304 70 70 0 40 703 16C4 40 70 70
40 773 19B4 20 70 20 60
634 13D5 70 100 0 40
704 16C5 40 100 70 40 774 19B5 20 100 20 60
635 13El 100 0 0 40 705 16Dl 70 0 70
40 775 19Cl 40 0 20 60
636 13E2 100 20 0 40 706
1602 70 20 70 40 776 19C2 40 20 20 60
637 13E3 100 40 0 40 707 1603
70 40 70 40 777 19C3 40 40 20 60
638 13E4 100 70 0 40 708
16D4 70 70 70 40 778 19c4 40 70 20 60
639 13E5 100
100 0 40 709 16D5 70 100 70 40 779 19c5 40 100 20 60
640 14Al 0 0 20 40 710 16El
100 0 70 40 780 19Dl 70 0 20 60
641 14A2 0 20 20 40 711
16E2 100 20 70 40 781 19D2 70 20 20 60
642 14A3 0
40 20 40 712 16E3 100 40 70 40 782 1903 70 40 20 60
643 14A4 0
70 20 40 713 16E4 100 70 70 40 783 19D4 70 70 20 60
644 14A5 0 100 20 40 714 16E5 100 100 70 40 784
19D5 70 100 20 60
645 1481 20 0 20
40 715 17Al 0 0 100 40 785 19El 100
0 20 60
646 14B2 20 20 20 40 716 17A2 0 20 100
40 786 19E2 100 20 20 60
647 14B3 20 40 20 40 717 17A3 0 40 100
40 787 19E3 100 40 20 60
648 14B4 20 70 20 40 718 17A4 0
70 100 40 788 19E4 100 70 20 60
649 14B5 20 100 20 40 719 17A5
0 100 100 40 789 19E5 100 100 20 60
650 14Cl 40 0 20 40 720 1781 20
0 100 40 790 20Al 0 0 40 60
651 14C2 40 20
20 40 721 1782 20 20 100 40 791 20A2 0 20 40 60
652 14c3
40 40 20 40 722 17B3 20 40 100 40 792 20A3 0 40 40 60
653 14c4 40 70
20 40 723 17B4 20 70 100 40 793 2OA4 0 70 40 60
14c5 40 100 20 40 724 17B5 20 100 100 40 794 20A5 0 100 40 60
655 14Dl 70 0 20 40 725 17Cl 40 0
100 40 795 20Bl 20 0 40 60
656 14D2 70 20 20
40 726 17C2 40 20 100 40 796 20B2 20 20 40 60
657 1403 70 40 20 40 727
17c3 40 40 100 40 797 20B3 20 40 40 60
658 14D4 70 70 20
40 728 17c4 40 70 100 40 798 20B4 20 70 40 60
659 14D5 70
100 20 40 729 17c5 40 100 100 40 799 20B5 20 100 40 60
660 14El 100 0 20 40 730 17Dl
70 0 100 40 800 2OCl 40 0 40 60
661 14E2 100 20
20 40 731 1702 70 20 100 40 801 2OC2 40 20 40 60
14E3 100 40 20 40 732 17D3 70 40 100 40 802 2OC3 40
40 40 60
663 14E4
100 70 20 40 733 1704 70 70 100 40 803 2OC4 40 70
40 60
664 14E5 100 100 20 40 734 17D5
70 100 100 40 804 2OC5 40 100 40 60
665 15Al 0
0 40 40 735 17El 100 0 100 40 805 20Dl
70 0 40 60
666 15A2 0 20 40 40 736 17E2
100 20 100 40 806 20D2 70 20 40 60
667 15A3 0 40 40 40 737 17E3 100 40
100 40 807 20D3 70 40 40 60
668 15A4 0 70 40 40 738
17E4 100 70 100 40 808 20D4 70 70 40 60
669 15A5 0
100 40 40 739 17E5 100 100 100 40 809 20D5 70 100 40 60
670 15Bl 20 0 40 40 740 18Al 0
0 0 60 810 20El 100 0 40 60
671 15B2 20 20
40 40 741 18A2 0 20 0 60 811 20E2 100 20 40 60
672 15B3
20 40 40 40 742 18A3 0 40 0 60 812 20E3 100 40 40 60
0 IS0 IS0 12642:1996(E)
Table 2 (concluded)
Sample % Dot Sample % Dot Sample % Dot
ID Location* C M Y K ID LocatIon* C M Y K ID Location* C M Y K
813 20E4 100 70 40
60 852 22C3 40 40 100 60 891 24C3 70 70 40 80
* Location data is included for information only.
4.1.3 User-defined data set
For situations where it is deemed necessary to provide a larger or differently spaced ink value data set, the user
may define a data set of his own. The ink values selected shall be provided in accordance with 4.4.
4.2 Colour measurement
Spectrophotometric measurement and calculation of calorimetric data of the printed sheet should be made in
accordance with IS0 13655. For the purposes of this International Standard, in those specific situations where a
backing other than black is deemed more appropriate and is used in measurement, that exception to this
International Standard shall be noted.
NOTE - Additional measured or computed data may be reported as desired. The data file format of 4.4 and annex B provide
for the typical densitometric and calorimetric data reported.
4.3 Data reporting
Calorimetric data, measured in accordance with 4.2, shall be reported as CIE tristimulus values to two decimal
places using the data file format specified in 4.4.

IS0 12642:1996(E)
The following additional data shall be provided to adequately define the measuring conditions:
a) originator of the data;
b) date of creation of data;
c) a description of the purpose or contents of the data;
d) a description of the instrumentation used, including, but not limited to, the brand and model number;
e) measurement source (light source and filter) conditions used;
f) wavelength interval used.
4.4 Data file format
The file format shall be an ASCII format keyword value file.
NOTE - An ASCII keyword value file makes use of predefined keywords and data tables. All encoding uses the standard IS0
7-bit coded character set defined in ISO/lEC 646 and commonly referred to as ASCII. The combination of the ASCII encoding
and the keyword value relationship allows such files to be easily read by humans and machines. Values are associated with
the keyword which precedes them and remain in effect until another instance of the keyword-value pair. Provision is made to
define the format within data tables and to permit multiple occurrences of data tables. See annex B.
The first 7 characters in the file shall be - “lS12642”.
Fields within the file shall be separated by white space. Valid white space characters are space (position 2/O of
lSO/IEC 646), carriage return (position O/l 3 of lSO/IEC 646), newline (position O/IO of lSO/IEC 646), and tab
(position O/9 of lSO/IEC 646). Keywords may be separated from values using any valid white space character. Only
the space or tab shall precede a keyword on a line. Comments shall be preceded by a single comment character (a
single character keyword). The comment character is the “#” (position Z/3 of lSO/IEC 646) symbol. Keywords and
data format identifiers are case sensitive and shall be upper case.
The specific syntax and usage information for each keyword shall be as described below.
All files reporting data associated with is0 12642 shall include the following keywords.
IS12642 - Used to identify data related to this International Standard.
ORIGINATOR - Identifies the specific organization or system that created the data file.
DESCRIPTOR - Describes the purpose or contents of the data file.
CREATED - Date of creation of data file.
INSTRUMENTATION - Used to report the specific instrumentation used (manufacturer and model
number) to generate the data reported.
MEASUREMENT SOURCE - Illumination used for spectral measurements.
-
PRINT CONDITIONS - Used to define the characteristics of the printed sheet being reported.
-
NUMBER OF FIELDS - Number of fields (data format identifiers) that are included in the data format
- -
definition that follows.
BEGIN DATA FORMAT - Begins definition of field position/interpretation of a data set.
- -
END DATA FORMAT - Ends data format definition.
- -
NUMBER OF SETS
- - Number of repeats or sets of data corresponding to the data format fields that
-
are included in the data to follow.

IS0 12642:1996(E)
0 IS0
BEGIN DATA - Marks the beginning of the stream of data sets.
-
- Marks the end of the stream of data sets.
END DATA
-
The following additional keywords may be used.
- Single character indicating comment follows
#
KEYWORD - Used to define vendor specific keywords or data format identifiers.
- Used to define the characteristics of the printed sheet being reported.
PRINT CONDITIONS
-
FILTER STATUS - Defines spectral response of the instrument used for densitometry.
-
4.4.1 Values
Unless otherwise noted each keyword has a character string value associated with it. All character string values
shall be enclosed in quotes (position Z/2 of lSO/IEC 646) regardless of whether there is white space contained
within the string. Enclosed in quotes means beginning and ending the character string with the ” symbol. The
” symbol itself is represented within a string as “‘I.
ts are prece ded by the comment character (#), and end with a new line, or carriage return. Comments
Commen
need not be enclosed in ” symbols.
The value associated with keywords NUMBER-OF-FIELDS and NUMBER-OF-SETS shall be an integer.
The BEGIN-, END keywords do not have explicit values associated with them but enclose either the data format
definition or associated data streams.
.4.2 Data format identifiers
FORMAT) describes the meaning of each field
Data format (enclosed by BEGIN DATA - FORMAT and END - DATA -
-
of data within a set. Data formats shall be composed of identifiers listed below, or defined keywords. Unknown
entries in the data format definition shall be read, but may be ignored by automated readers. Data format
identifiers shall be upper case. The data type associated with each data format is assumed to be real (may contain
a decimal point) unless separately defined as integer (I) or character string (CS). Character string data shall be
enclosed in quotation marks except in the case of SAMPLE-ID where the quotation marks are not required if the
sample identifier does not contain white space.
Each data repeat shall be divided by a line terminator character, e.g. newline (OIO), carriage return (013).
The following data format identifiers are defined for use with this International Standard. Where additional data
format identifiers are used they shall be defined by use of the keyword “KEYWORD”.
- Identifies sample which data represents.
SAMPLE-ID (CS)
- Identifies label, or other non-machine readable value. Value must begin and end
STRING (CS)
with a ” symbol.
- Cyan component of CMYK data expressed as a percentage.
CMYK C
-
CMYK M - Magenta component of CMYK data expressed as a percentage.
-
CMYK Y - Yellow component of CMYK data expressed as a percentage.
-
CMYK K - Black component of CMYK data expressed as a percentage.
-
D RED - Red filter reflection density.
-
IS0 12642:1996(E)
D GREEN - Green filter reflection density.
-
D BLUE - Blue filter reflection density.
-
D VIS - Visual filter reflection density.
-
SPECTRAL NM -
...

SLOVENSKI STANDARD
01-junij-2008
*UDILþQDWHKQRORJLMD9KRGQLSRGDWNL]DRSLVEDUYQHJDWLVNDVSURFHVQLPL
EDUYDPLGHO2VQRYQLSRGDWNL]DSURILOLUDQMHLQFHUWLILFLUDQMH
Graphic technology - Input data for characterization of 4-colour process printing - Part 1:
Initial data set
Ta slovenski standard je istoveten z:
ICS:
35.240.30 Uporabniške rešitve IT v IT applications in information,
informatiki, dokumentiranju in documentation and
založništvu publishing
37.100.99 'UXJLVWDQGDUGLY]YH]L] Other standards related to
JUDILþQRWHKQRORJLMR graphic technology
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL
STANDARD
First edition
1996-l 2-l 5
Graphic technology - Prepress digital data
Input data for characterization
exchange -
of 4-colour process printing
Technologie graphique - tkhange de don&es num&iques de
- Donnkes d’en t&e pour caractbisa tion d’impression en
prkimpression
quadrichromie
Reference number
IS0 12642:1996(E)
IS0 12642:1996(E)
Contents
Page
. . .
III
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreword
iv
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Normative references
3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
................................................................................
4 Requirements
.................................. 2
4.1 Data set definition .
4.1.1 Basic ink value data set . .
.................................... 2
4.1.2 Extended ink value data set
..... ......................................... 7
4.1.3 User-defined data set
Colour measurement . .
4.2
.............................. 7
4.3 Data reporting .
..................................................................... 8
4.4 Data file format
Annexes
.................................. 11
A Application notes .
. . . . . . . . . . . . . . . . . . . . . . . . . . 15
B General description of keyword value file format
0 IS0 1996
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
IS0 12642:1996(E)
@ IS0
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work of
preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for which
a technical committee has been established has the right to be rep-
resented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 12642 was prepared by Technical Committee
lSO/TC 130, Graphic technology.
Annexes A and B of this International Standard are for information only.

@ IS0
IS0 12642:1996(E)
Introduction
General background
The technical content of this International Standard is identical to the
American National Standard lT8.7/3-1993. The ANSI document resulted
from the joint efforts of an international industry group that included
participants representing a broad range of prepress vendors, film
manufacturers, and users. This group, initially identified as the DDES
(Digital Data Exchange Standards) Committee, later became the founders
of the ANSI IT8 (Image Technology) accredited standards committee which
is responsible for electronic data exchange standards in graphic arts
prepress.
In an environment in which colour information is passed between
electronic publishing systems, it is essential for colour to be defined in an
unambiguous manner. Substantial experimental evidence enables us to
conclude that, for fovea1 vision, this can be achieved by specifying the
mixture of three linearly independent stimuli required to match that colour.
In 1931 a complete system of colour definition was developed by the CIE
(Commission Internationale de I’Eclairage) based on experimental evidence
published in the previous decade. This evidence confirmed the similarity
between observers in making such a match. That system and its
derivatives are now universally accepted for colour specification.
Many half-tone colour printing processes, however, require more than
three colourants. There are two reasons for this. Generally the gamut of
colours achievable with three printing inks is rather limited, and printing
additional inks can extend the gamut significantly. Furthermore, the
provision of extra inks can reduce the magnitude of the visual change
caused by the variability in colour and register which arises in print
production. By far the most common additional ink used is black, and four-
colour process printing is accepted as the norm for most forms of printing.
The addition of an extra ink means that the production of a colour cannot,
in general, be defined uniquely. As a result, different parts of a printed
sheet may use varying ink combinations to achieve the same colour. For
many practical purposes it is desirable to specify this combination directly,
rather than encode it by rules, and this leads to the requirement to transfer
data in a four-colour, device-specific mode. If the same data is to be used
for other applications, or even if it needs to be modified for a different set
of printing characteristics, some additional information is necessary to
enable the receiver of the data to interpret it. This International Standard
has been developed to achieve this objective. It provides a data set which
can be transmitted with an image to enable the receiver, if required, either
to transform the data into a device-independent state or correct it for a
different printing characteristic. An alternative application of the tools pro-
iv
IS0 12642:1996(E)
@ IS0
vided by this International Standard is to enable the characterization of
output systems and in this context work has been undertaken by the
committee to generate data for the major types of half-tone printing
processes which have been specified internationally. This procedure is
described in the application notes (annex A) and the data will be published
in future annexes.
The body of this International Standard defines the ink values to be used
for characterizing any four-colour (cyan, magenta, yellow, and black) half-
tone printing process (including gravure). These ink values are defined as
either digital data in a computer or half-tone tone values on film. This
requires that particular care be taken in the preparation of film to ensure
that the output device is properly “linearized” and the half-tone film values
match the numerical data in the computer file. For some applications the
film values used for linearization may be one or more generations removed
from the film produced by the film writer. The measurement procedures
and the data format to be used in determining and reporting tristimulus
values (X,Y,Z) are also included.
While the technique employed in this International Standard applies to all
output processes, the data has been optimized for four-colour half-tone
printing. For non-half-tone processes, or those which use colourants that
are significantly different from typical printing inks, the reference data file
should be determined in such a way that it provides reasonably uniform
colour differences when the data file is rendered. For a system which does
not meet the criterion, the user-optional data set could be utilized.
Suggestions for this are made in the application notes; however, they are
not part of this International Standard.
It should be noted that this International Standard does not define the
physical layout of the patches or their size. This is because any such
decision depends on the printing device to be used, and the area required
*for colour measurement. It is anticipated that a specific layout will be
produced to suit the needs of the user. However, in order to realize the
colours necessary for the measurements of specific printing processes to
be included as future annexes, it was necessary to produce a specific
layout. This layout, composed of four groups of patches, has been adopted
by both ANSI/CGATS and lSO/TC 130. Within TC 130 the digital data in the
appropriate format is contained in images S7 through SIO of the Standard
Colour Image Data (SCID), IS0 12640. For the guidance of others, this
layout is shown in figure A.I.
Technical background
Printing characteristics
Various efforts have been made over the past 20 years to reduce the
variation which occurs between printing presses. Initially, standards such
as IS0 2846 were developed to specify the colour of printing inks.
Subsequently, as a result of the lead of FOGRA/BVD in Germany,
significant effort has been made in developing specifications which define
constraints for the ink transfer onto paper. This is achieved by specifying
either the reflection density or the tristimulus values of a uniform (solid)
printed ink film, and by specifying tolerances around an optical density at
which various half-tone dot values should be reproduced. Within the
international printing community such specifications are widely recognized
and have become, in many cases, de facto printing standards. For

@ IS0
IS0 12642:1996(E)
magazine and periodical printing, SWOP (in the USA) and FIPP (in Europe)
are widely recognized standards. For commercial printing, the specifica-
tions of FOGRA and PIRA are widely known in Europe. Specifications are
also evolving for newspaper and heat-set web production. Future annexes
to this International Standard may contain the calorimetric tristimulus values
corresponding to these percent dot values when printed in accordance
with a number of such printing specifications. Such data can be used as
the basis for the conversion between ink values and tristimulus values.
It should be noted that any characterization of the process takes account
of all steps involved in print production. Thus it includes production of the
separations, any contacting operations which may be required and
platemaking. All of the printing specifications as referred to above include
recommendations for maintaining consistency of such operations to
ensure that validity of a characterization is maintained.
For characterizing printing conditions which differ from the published
specifications, two options exist. Either the large palette of colours can be
printed and measured, or the process can be modelled analytically. The
analytical modelling approach has the advantage that it requires far fewer
colour measurements; the disadvantages lie in the accuracy of prediction.
For many applications, a satisfactory compromise is achieved by using
modelling for the modification of published data. This is discussed in more
detail in the application notes.
Choice of colour palette
It is generally agreed that measurement of a reasonably large number of
colours is preferred for accurate characterization of any printing process. It
is not possible to be precise about how many colours are required; the
number will depend on many factors including the accuracy of colour
rendition required, the uniformity of spacing of the samples in terms of
colour, the type of modelling process used, and any nonlinear
However, practical
characteristics of a specific printing process.
experience suggests that measuring all combinations of six levels each for
cyan, magenta, yellow, and black, preferably weighted towards lower half-
tone dot values, will frequently prove adequate. Generally, for higher levels
of black, the number of samples may be considerably reduced since the
colour difference between samples is very small. With the addition of
single colour scales which contain extra values to assist in defining local
nonlinearity,
the accuracy obtained for most printing processes is
adequate.
A reduced-size data set may be used if:
- a less accurate characterization is adequate;
- the process ca n be modelled accurately by one of the well-kn own
mod els listed in the application notes;
- the aim of the measurement is to seek small corrections to an already
accurate characterization.
The advantages of this approach are that the measurement effort is
substantially lower and that the file size of the data is greatly reduced. This
can be advantageous when images are compressed although, in general,
even the larger file is small compared to most images
The proposal accepted for this International Standard defines a colour
palette consisting of 928 combinations of cyan, magenta, yellow, and black
vi
IS0 12642:1996(E)
@ IS0
ink values. It is this palette (hereafter called the extended ink value data
set) which has been measured to provide colour characterization data on
the major printing specifications.
Where such an extensive set of data is not required, a subset of this
palette which consists of 182 colours (hereafter called the basic ink value
data set) is specified. It provides data suited to a variety of modelling
methods and generally provides excessive data for any specific method. It
is sufficient for almost all published modelling methods.
For a characterization which cannot be achieved with the data sets defined
in this International Standard, provision is made for a user-optional set of
any size. The format of the data is defined in this International Standard.
It is anticipated that the basic data set will be the default file supplied in
the header of image files to be exchanged, and that by prior agreement,
one of the larger palettes may be provided when required. It is the intent
of ANSI lT8/CGATS and of lSO/TC 130 to work with those organizations
responsible for various printing definitions (SWOP, FOGRA, etc.) to
develop tables of colour data that are agreed to be representative of the
named printing conditions. When such data are available and published by
ISO, such data can be referenced as “named” data. This means the
published data should be used by the receiver and the file need not be
sent. For many applications it is expected that the use of named data sets
will suffice.
VII
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-
IS0 12642:1996(E)
INTERNATIONAL STANDARD 0 IS0
Graphic technology - Prepress digital data exchange -
Input data for characterization of 4-colour process printing
1 Scope
This International Standard defines an input data file, a measurement procedure and an output data format for use
in characterizing any four-colour printing process.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the editions indicated were valid. All standards are subject to
revision, and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0
maintain registers of currently valid International Standards.
I SO/I EC 646: 1991, Information technology - IS0 7-bit coded character set for information interchange.
IS0 12640: -I), Graphic technology - Prepress digital data exchange - Standard co/our image data (SC/D).
Spectral measurement and calorimetric computation for graphic arts
IS0 13655:1996, Graphic technology -
images.
3 Definitions
For the purposes of this International Standard, the following definitions apply.
3.1 CIE tristimulus values: Amounts of the three reference colour stimuli, in the CIE-specified trichromatic
system, required to match the colour of the stimulus considered.
In the 1931 CIE standard calorimetric system, the tristimulus values are represented by the symbols X, Y, 2.
NOTE -
3.2 colour gamut: Subset of perceivable colours reproducible by a device or medium.
3.3 half-tone dots: Dots which vary in spatial frequency or size thereby producing an image of tonal gradation.
Half-tone dots are normally quantified by the percentage area they cover. Measurement of dot area is normally
made on film separations and is derived from the Murray-Davies equation.
3.4 keyword value file: File that makes use of predefined keywords and data tables to exchange data in an open
extensible manner.
I) To be published.
@ IS0
IS0 12642:1996(E)
r images using three or more printing inks. The normal process
35 process colou r printing : Reproducing colou
yellow, and bl ack.
i n’ks consist of magenta,
cyan,
3.6 ink value: Digital file value which represents the amount of a colourant required in a rendering process. For
the half-tone printing process this is equivalent to the dot area of the half-tone film expressed as a percentage.
3.7 white space: Space in a data file occupied by characters which do not print. Typical examples are space
(position 2/O of lSO/IEC 646), carriage return (position O/13 of lSO/lEC 646) newline (position O/l 0 of lSO/lEC 646),
and tab (position O/9 of lSO/IEC 646).
4 Requirements
4.1 Data set definition
Two sets of ink values are specified which span, with differing intervals, the colour space defined by combinations
of cyan, magenta, yellow, and black dot area percentages. The basic data set, which is a subset of the extended
data set, shall be the default set in the absence of any other information; the extended data set (or subsets of it)
may be used if specified. The data is defined as digital data and does not exist as printed images (or sets of
separations). However, the calorimetric values needed to produce the colour characterization data file may be
determined by printing images which have been made from films containing half-tone values corresponding to the
values in the ink value data set.
4.1.1 Basic ink value data set
The cyan, magenta, yellow, and black ink values specified in this set, and their identification (ID) numbers, shall be
as listed in table 1.
NOTE - The sample location information included in table 1 is based on the printing layout shown in figure A.1 and is
included for information only.
4.12 Extended ink value data set
The extended data set shall include the values of table 1 as well as those of table 2.
NOTE - ocation information included in table 2 is based on the printing layout shown in figure A.1 and is
The sample
included for information only.

IS0 12642:1996(E)
0 IS0
Table 1 - Basic ink value data set
Sample % Dot Sample % Dot
Sample % Dot
M
ID .ocation * C M Y K ID -ocation* C Y K ID -0catiot-P C M Y K
1 0 62 OEIO 0 0 15 0 123 OJO6 100 85 T 80
OAOI 100 o- 0
OEII 0 0 10 124 100 85 85 60
2 OA02 0 100 0 0 63 0 OJ07
OE12 0 0 7 0 125 OJO8 80 65 65 100
3 OA03 0 0 100 0 64
OE13 0 0 3 65 80
4 OA04 100 100 0 0 65 0 126 OJO9 80 65
66 OF01 0 0 0 90 127 OJIO 80 65 65 60
5 OA05 100 0 100 0
OF02 0 0 0 80 128 65 65 40
6 0806 0 100 100 0 67 OJII 80
0 68 OF03 0 0 0 70 129 OJ12 60 45 45 100
7 OA07 100 100 100
OF04 0 0 0 60 130 45 80
8 OA08 70 70 0 0 69 OJ13 60 45
70 OF05 0 0 0 50 131 45 45 60
9 OAO9 70 0 70 0 OK01 60
71 OF06 0 0 0 40 132 40
10 OAIO 0 70 70 0 OK02 60 45 45
72 OF07 0 0 0 30 133 45 20
11 OAII 40 40 0 0 OK03 60 45
OF08 0 0 25
12 OA12 0 40 40 0 73 0 134 OK04 40 27 27 100
74 OF09 0 0 0 20 27
13 OA13 40 40 40 0 135 OK05 40 27 80
14 OBOI 40 0 40 0 75 OF10 0 0 0 15 136 OK06 40 27 27 60
OF11
15 OB02 20 20 0 0 76 0 0 0 10 137 OK07 40 27 27 40
16 OB03 20 0 20 0 77 OF12 0 0 0 7 138 OK08 40 27 27 20
17 OB04 0 20 20 0 78 OF13 0 0 0 3 139 OK09 40 27 27 10
18 OB05 100 0 0 100 79 OGOI 40 100 0 0 140 OK10 20 12 12 100
19 OB06 0 100 0 100 80 OG02 40 100 40 0 141 OK11 20 12 12 80
20 0807 0 0 100 100 81 OG03 0 100 40 0 142 OK12 20 12 12 60
21 OB08 100 100 0 100 82 OG04 40 100 100 0 143 OK13 20 12 12 40
22 OB09 100 0 100 100 83 OG05 0 40 100 0 144 OLOI 20 12 12 20
23 OBIO 0 100 100 100 84 OG06 40 40 100 0 145 OLO2 20 12 12 10
24 OBII 100 100 100 100 85 OG07 70 70 70 0 146 OLO3 10 6 6 100
25 OB12 0 0 0 100 86 OG08 40 0 100 0 147 OLO4 10 6 6 80
26 OB13 ‘aper 87 OG09 100 40 100 0 148 OLO5 10 6 6 60
27 90 0 0 0 88 OGIO 100 0 40 0 149 OL06 10 6 6 40
OCOI
28 oco2 80 0 0 0 89 OGII 100 40 40 0 150 OLO7 10 6 6 20
29 70 0 0 0 90 OG12 100 40 0 0 151 OL08 10 6 6 10
oco3
30 oco4 60 0 0 0 91 OG13 100 100 40 0 152 OLO9 100 85 85 0
50 0 0 0 92 OH01 70 100 20 0 153 OLIO 80 65 65 0
31 oco5
32 OC06 40 0 0 0 93 OH02 20 70 20 0 154 OLII 60 45 45 0
30 0 0 0 94 OH03 20 70 40 0 155 OL12 40 27 27
33 oco7 0
34 25 0 0 0 95 OH04 20 100 70 0 156 OL13 20 12 12 0
OC08
20 0 0 0 96 OH05 20 70 70 0 157 OMOI 10 6
35 oco9 6 0
36 15 0 0 0 97 OH06 20 70 100 0 158 OM02 3
OCIO 5 3 0
0 98 OH07 20 20 70 0 159
37 OCII 10 0 0 OM03 100 0 0 20
38 7 0 0 0 99 OH08 70 20 100 0 160 OM04
oc12 0 100 0 20
100 OH09 70 20
39 oc13 3 0 0 0 70 0 161 OM05 0 0 100 20
0 101 OHIO 100 20 70
40 ODOI 0 90 0 0 162 OM06 100 100 0 20
OH11
41 OD02 0 80 0 0 102 70 20 20 0 163 OM07 100 0 100 20
OH12
42 0003 0 70 0 0 103 100 70 20 0 164 OM08 0 100 100 20
43 OD04 0 60 0 0 104 OH13 70 70 20 0 165 OM09 40 40 0 20
44 OD05 0 50 0 0 105 0101 70 100 70 0 166 OMIO 40 0 40 20
45 OD06 0 40 0 0 106 0102 40 70 40 0 167 OMII 0 40 40 20
46 OD07 0 30 0 0 107 0103 20 40 20 0 168 OM12 100 100 0 40
47 OD08 0 25 0 0 108 0104 70 100 100 0 169 OM13 100
0 100 40
48 OD09 0 20 0 0 109 0105 20 40 40 0 170 ON01 0
100 100 40
49 ODIO 0 15 0 0 110 0106 70 70 100 0 171 ON02 40
40 0 40
50 ODII 0 IO 0 0 111 0107 40 40 0 172 ON03 40
7Q 0 40 40
51 OD12 0 7 0 0 112 0108 20 20 40 0 173
ON04 0 40 40 40
52 OD13 0 3 0 0 113 0109 20 20 20 0 174 ON05
100 0 0 70
53 0 0 90 0 114 0110 100 70 100
OEOI 0 175 ON06 0 100 0 70
54 OE02 0 0 80 0 115 0111 70 40 70 0 176
ON07 0 0 100 70
55 0 70 0 116 0112 40 20 40
OE03 0 0 177 ON08 100 100 0 70
56 0 0 60 0 117 0113 100 70 70 178
OE04 0 ON09 100 0 100 70
0 118 OJOI 40 40 20
57 OE05 0 0 50 0 179 ON10 0 100 100 70
5e 0 0 40 0 119 OJ02 100 100 70 0
OE06 180 ON11 40 40 0 70
0 120 OJ03 40 20 20
5s OE07 0 0 30 0 181 ON12 40 0 40 70
25 0 121 OJ04 70 40 40
6C OE08 0 0 0 182 ON13 0 40 40 70
122 OJ05
61 OE09 0 0 20 0 100 85 85 100
Location data is included for information only.

IS0 12642:1996(E) 0 IS0
Table 2 - Extended ink value data set
Sample % Dot Sample % Dot Sample % Dot
K ID Location* C M Y K
ID Location* C M Y K ID Location* C M Y
323 4F3 100 20 40 0
1Al 0 0 0 0 253 2F5 100 70 10 0
10 0 324 4F4 100 40 40 0
184 IA2 0 IO 0 0 254 2F6 100 100
325 4F5 100 70 40 0
IA3 0 20 0 0 255 3Al 0 0 20 0
20 0 326 4F6 100 100 40 0
186 IA4 0 40 0 0 256 3A2 0 10
327 5Al 0 0 70 0
lA5 0 70 0 0 257 3A3 0 20 20 0
20 0 328 5A2 0 10 70 0
188 IA6 0 100 0 0 258 3A4 0 40
329 5A3 0 20 70 0
1Bl 10 0 0 0 259 3A5 0 70 20 0
20 0 330 5A4 0 40 70 0
190 182 10 10 0 0 260 3A6 0 100
5A5 0 70 70 0
10 20 0 0 261 3Bl 10 0 20 0 331
191 lB3
5A6 0 100 70 0
10 40 0 0 262 3B2 10 10 20 0 332
192 lB4
0 70 0
70 0 0 263 3B3 10 20 20 0 333 5Bl 10
193 lB5 10
5B2 10 IO 70 0
10 100 0 0 264 3B4 10 40 20 0 334
194 lB6
20 70 0
0 0 0 265 3B5 10 70 20 0 335 5B3 10
195 1Cl 20
336 5B4 10 40 70 0
x2 20 IO 0 0 266 3B6 10 100 20 0
70 70 0
20 0 0 267 3Cl 20 0 20 0 337 5B5 10
197 lC3 20
5B6 10 100 70 0
20 40 0 0 268 3C2 20 10 20 0 338
198 lC4
70 0
0 269 3c3 20 20 20 0 339 5Cl 20 0
199 lC5 20 70 0
10 70 0
100 0 0 270 3c4 20 40 20 0 340 5C2 20
200 lC6 20
70 0
0 271 3c5 20 70 20 0 341 5c3 20 20
201 1Dl 40 0 0
70 0
0 272 3C6 20 100 20 0 342 5c4 20 40
202 102 40 10 0
273 3Dl 40 0 20 0 343 5c5 20 70 70
203 ID3 40 20 0 0
70 0
0 274 3D2 40 10 20 0 344 SC6 20 100
204 104 40 40 0
275 3D3 40 20 20 0 345 501 40 0 70
205 ID5 40 70 0 0
276 304 40 40 20 0 346 502 40 10 70
206 ID6 40 100 0 0
40 70 20 0 347 5D3 40 20 70 0
207 1El 70 0 0 0 277 305
278 306 40 100 20 0 348 5D4 40 40 70
208 lE2 70 10 0 0
70 0 20 0 349 5D5 40 70 70 0
209 lE3 70 20 0 0 279 3El
280 3E2 70 10 20 0 350 5D6 40 100 70
210 lE4 70 40 0 0
20 20 0 351 5El 70 0 70 0
211 lE5 70 70 0 0 281 3E3 70
70 40 20 0 352 5E2 70 10 70 0
212 lE6 70 100 0 0 282 3E4
70 20 0 353 5E3 70 20 70 0
213 lF1 100 0 0 0 283 3E5 70
70 100 20 0 354 5E4 70 40 70 0
214 IF2 100 10 0 0 284 3E6
20 0 355 5E5 70 70 70 0
215 IF3 100 20 0 0 285 3Fl 100 0
10 20 0 356 5E6 70 100 70 0
216 IF4 100 40 0 0 286 3F2 100
20 0 357 5Fl 100 0 70 0
217 IF5 100 70 0 0 287 3F3 100 20
20 0 358 5F2 100 10 70 0
218 IF6 100 100 0 0 288 3F4 100 40
359 SF3 100 20 70 0
2Al 0 0 10 0 289 3F5 100 70 20 0
20 0 360 5F4 100 40 70 0
220 2A2 0 10 10 0 290 3F6 100 100
40 0 361 5F5 100 70 70 0
221 2A3 0 20 10 0 291 4Al 0 0
40 0 362 5F6 100 100 70 0
222 2A4 0 40 10 0 292 4A2 0 10
363 6Al 0 0 100 0
2A5 0 70 10 0 293 4A3 0 20 40 0
364 6A2 0 10 100 0
2A6 0 100 10 0 294 4A4 0 40 40 0
0 20 100 0
0 10 0 295 4A5 0 70 40 0 365 6A3
225 2Bl 10
6A4 0 40 100 0
10 10 10 0 296 4A6 0 100 40 0 366
226 2B2
100 0
0 297 4Bl 10 0 40 0 367 6A5 0 70
227 2B3 10 20 10
0 100 100 0
40 10 0 298 4B2 10 10 40 0 368 6A6
228 2B4 10
10 20 40 0 369 6Bl 10 0 100 0
229 2B5 IO 70 10 0 299 4B3
300 484 10 40 40 0 370 6B2 10 10 100
230 2B6 10 100 10 0
70 40 0 371 683 10 20 100 0
231 2Cl 20 0 10 0 301 4B5 10
100 40 0 372 6B4 10 40 100 0
232 2c2 20 10 10 0 302 4B6 10
40 0 373 6B5 10 70 100 0
233 2C3 20 20 10 0 303 4Cl 20 0
40 0 374 6B6 10 100 100 0
234 2C4 20 40 10 0 304 4C2 20 IO
375 6Cl 20 0 100 0
235 2C5 20 70 IO 0 305 4c3 20 20 40 0
236 2C6 20 100 10 0 306 4c4 20 40 40 0 376 6C2 20 10 100 0
237 201 40 0 10 0 307 4c5 20 70 40 0 377 6C3 20 20 100 0
378 6C4 20 40 100 0
2D2 40 10 10 0 308 4C6 20 100 40 0
239 203 40 20 10 0 309 401 40 0 40 0 379 6C5 20 70 100 0
6C6 20 100 100 0
40 40 10 0 310 402 40 10 40 0 380
240 204
0 0
205 40 70 10 0 311 403 40 20 40 0 381 601 40 100
242 206 40 100 10 0 312 4D4 40 40 40 0 382 6D2 40 10 100 0
0 10 0 313 405 40 70 40 0 383 6D3 40 20 100
243 2El 70
244 2E2 70 10 10 0 314 4D6 40 100 40 0 384 6D4 40 40 100 0
20 10 0 315 4El 70 0 40 0 385 6D5 40 70 100 0
245 2E3 70
100 0
0 316 4E2 70 10 40 0 386 6D6 40 100
246 2E4 70 40 10
70 10 0 317 4E3 70 20 40 0 387 6El 70 0 100
247 2E5 70
248 2E6 70 100 318 40 6E2 100 0
10 0 4E4 70 40 0 388 70 IO
100 0 10 0 319 4E5 70 70 40 0 389 6E3 70 20 100
249 2Fl
250 2F2 100 IO 10 0 320 40 100 0
4E6 70 100 40 0 390 6E4 70
251 2F3 100 20 0
IO 0 321 4Fl 100 0 40 0 391 6E5 70 70 100
252 2F4 100 40 100 0
10 0 322 4F2 100 IO 40 0 392 6E6 70 100

0 IS0 IS0 12642:1996(E)
Table 2 (continued,,
% Dot % Dot Sample % Dot
Sample
M Y K
ID -ocation* C M Y K ID -ocation* C M Y K ID -ocation* C
393 Tr 0 100 0 463 8E5 70 70 10 20 533 lOE3 70 20 40 -7r
6Fl
0 464 8E6 70 100 10 20 534 lOE4 70 40 40 20
394 6F2 100 IO 100
20 100 0 465 8Fl 100 0 10 20 535 lOE5 70 70 40 20
395 6F3 100
100 0 466 8F2 100 10 IO 20 536 lOE6 70 100 40 20
396 6F4 100 40
100 70 100 0 467 8F3 100 20 10 20 537 IOFI 100 0 40 20
397 6F5
100 0 468 8F4 100 40 10 20 538 lOF2 100 10 40 20
398 6F6 100 100
0 20 469 8F5 100 70 IO 20 539 lOF3 100 20 40 20
399 7Al 0 0
470 8F6 100 100 IO 20 540 lOF4 100 40 40 20
400 7A2 0 IO 0 20
0 20 471 9Al 0 0 20 20 541 lOF5 100 70 40 20
401 7A3 0 20
20 472 9A2 0 IO 20 20 lOF6 100 100 40 20
402 7A4 0 40 0 542
20 473 9A3 0 20 20 20 543 IIAI 0 0 70 20
403 7A5 0 70 0
474 9A4 0 40 20 llA2 0 10 70 20
404 7A6 0 100 0 20 20 544
20 475 9A5 0 70 20 20 llA3 0 20 70 20
405 7Bl 10 0 0 545
0 llA4
406 782 10 10 0 20 476 9A6 100 20 20 546 0 40 70 20
477 9Bl 10 0 llA5
407 7B3 IO 20 0 20 20 20 547 0 70 70 20
408 7B4 10 40 0 20 478 9B2 IO 10 20 20 548 llA6 0 100 70 20
10 IIBI
409 785 10 70 0 20 479 9B3 20 20 20 549 10 0 70 20
410 7B6 10 100 0 20 480 9B4 10 40 20 20 550 llB2 10 10 70 20
9B5 10 70
411 7Cl 20 0 0 20 481 20 20 551 llB3 10 20 70 20
412 7C2 20 10 0 20 482 9B6 10 100 20 20 552 llB4 10 40 70 20
413 7c3 20 20 0 20 483 9Cl 20 0 20 20 553 llB5 10 70 70 20
414 7c4 20 40 0 20 484 9c2 20 IO 20 20 554 llB6 10 100 70 20
415 7c5 20 70 0 20 485 9c3 20 20 20 20 555 IICI 20 0 70 20
/
416 7C6 20 100 0 20 486 9c4 20 40 20 20 556 llC2 20 IO 70 20
417 7Dl 40 0 0 20 487 9c5 20 70 20 20 557 llC3 20 20 70 20
418 7D2 40 10 0 20 488 9C6 20 100 20 20 558 llC4 20 40 70 20
419 7D3 40 20 0 20 489 9Dl 40 0 20 20 559 llC5 20 70 70 20
40 40 0 20 490 9D2 40 10 20 20 560 llC6 20 100 70 20
420 7D4
421 705 40 70 0 20 491 9D3 40 20 20 20 561 IIDI 40 0 70 20
0 20 492 9D4 40 40 20 20 562 llD2 40 10 70 20
422 7D6 40 100
,
0 0 20 493 9D5 40 70 20 20 563 llD3 40 20 70 20
423 7El 70
20 494 9D6 40 100 20 20 564 llD4
424 7E2 70 10 0 40 40 70 20
0 20 495 9El 70 0 20 20 565 llD5 40 70 20
425 7E3 70 20 70
20 496 9E2 70 IO 20 20 566 l-lD6
426 7E4 70 40 0 40 100 70 20
20 497 9E3 70 20 20 20 567 IIEI 70
427 7E5 70 70 0 0 70 20
70 40 20
428 7E6 70 100 0 20 49E 9E4 20 568 11E2 70 10 70 20
49s 9E5 70 70 20 20 569 llE3
429 7Fl 100 0 0 20 70 20 70 20
43c 7F2 100 10 0 20 5oc 9E6 100 20 20 570 llE4 70 40 70 20
501 9Fl 100 0 20 20 571 llE5
431 7F3 100 20 0 20 70 70 70 20
9F2
432 7F4 100 40 0 20 502 100 10 20 20 572 llE6 70 100 70 20
9F3 100 20 20 IIFI
433 7F5 100 70 0 20 503 20 573 100 0 70 20
434 7F6 100 100 0 20 504 9F4 100 40 20 20 574 llF2 100 10 70 20
435 8Al 0 0 10 20 505 9F5 100 70 20 20 575 1 IF3 100 20 70 20
43E 8A2 0 10 10 20 50E 9F6 100 100 20 20 576 1 IF4 100 40 70 20
IOAI
437 8A3 0 20 IO 20 507 0 0 40 20 577 llF5 100 70 70 20
43E 8A4 0 40 10 20 50E lOA 0 IO 40 20 578 llF6 100 100 70 20
43s 8A5 0 70 10 20 50: lOA 0 20 40 20 579 12Al 0 0 100 20
44c 8A6 0 100 10 20 5lC lOA 0 40 40 20 580 12A2 0 IO 100 20
441 8Bl 10 0 10 20 511 lOA 0 70 40 20 58-l 12A3 0 20 100 20
442 8B2 10 10 IO 20 512 lOA 0 100 40 20 582 12A4 0 40 100 20
44: 8B3 10 20 10 20 51: IOBI 10 0 40 20 583 12A5 0 70 100 20
444 8B4 10 40 10 20 514 lOB2 10 10 40 20 584 12A6 0 100 100 20
445 8B5 IO 70 IO 20 51E lOB3 IO 20 40 20 585 12Bl 10 0 20
446 8B6 10 100 10 20 516 lOB4 10 40 40 20 586 12B2 10 10 100 20
447 20 0 10 20 517 lOB5 10 70 40 20 587 12B3
8Cl 10 20 100 20
44E 8C2 20 10 10 20 51E lOB6 10 100 40 20 588 12B4
10 40 100 20
44: 20 10 20 51s IOCI 20 0 40 20 12B5
8C3 20 589 10 70 100 20
45c 20 40 IO 20 52C lOC2 20 10 40 20 590 12B6
8C4 10 100 100 20
20 521 lOC3 20 .20 40 20
451 8C5 20 70 10 591 12Cl 20 0 100 20
)
20 522 lOC4 20 40 40 20
45; 8C6 20 100 10 592 12c2 20 IO 100 20
52; i lOC5 20 70 40
45: 801 40 0 10 20 20 593 12C3 20 20 100 20
c lOC6 20 100 40
45L 8D2 40 10 10 20 52L 20 594 12C4 20 40 100 20
IODI 0
455 8D3 40 20 10 20 525 j 40 40 20 595 12C5 20 70 100 20
j lOD2 40 10 40
456 8D4 40 40 10 20 52E 20 596 12C6 20 100 100 20
45; 8D5 40 70 10 20 52; lOD3 40 40 20 597 12Dl 40 0 100 20
40 40 40
45f 8D6 40 100 10 20 52f 3 lOD4 20 598 12D2 40 10 100 20
45: 8El 70 0 10 20 525 3 1005 40 40 20 599 1203 40 20 100 20
40 100
46( 8E2 70 10 10 20 53c > lOD6 40 20 600 12D4 40 40 100 20
461 8E3 70 20 IO 20 531 I IOEI 70 40 20 601 12D5 40 70 100 20
?
IO
46; 8E4 70 40 10 20 53; lOE2 70 40 20 602 12D6 40 100 100 20

IS0 12642:1996(E) 0 IS0
Table 2 (continued)
% Dot Sample % Dot Sample % Dot
Sample
ID LocatIon* C M Y K ID Location* C M Y K ID Location* C M Y K
603 12El 70 0 100 20 673 15B4 20 70 40 40 743 18A4 0 70 0 60
604 12E2 70 10 100 20 674 15B5 20 100 40 40 744 18A5 0 100 0 60
605 12E3 70 20 100 20 675 15Cl 40 0 40 40 745 18Bl 20 0 0 60
606 12E4 70 40 100 20 676 15C2 40 20 40 40 746 18B2 20 20 0 60
607 l2E5 70 70 100 20 677 15c3 40 40 40 40 747 18B3 20 40 0 60
608 12E6 70 100 100 20 678 15c4 40 70 40 40 748 18B4 20 70 0 60
609 12Fl 100 0 100 20 679 15c5 40 100 40 40 749 18B5 20 100 0 60
610 12F2 100 10 100 20 680 15Dl 70 0 40 40 750 18Cl 40 0 0 60
611 12F3 -loo 20 100 20 681 15D2 70 20 40 40 751 18C2 40 20 0 60
612 12F4 100 40 100 20 682 1503 70 40 40 40 752 18C3 40 40 0 60
613 12F5 100 70 100 20 683 15D4 70 70 40 40 753 18C4 40 70 0 60
614 12F6 100 100 100 20 684 15D5 70 100 40 40 754 18C5 40 100 0 60
615 13Al 0 0 0 40 685 15El 100 0 40 40 755 1801 70 0 0 60
616 13A2 0 20 0 40 686 15E2 100 20 40 40 756 18D2 70 20 0 60
617 13A3 0 40 0 40 687 15E3 100 40 40 40 757 18D3 70 40 0 60
618 13A4 0 70 0 40 688 15E4 100 70 40 40 758 18D4 70 70 0 60
619 13A5 0 100 0 40 689 15E5 100 100 40 40 759 l8D5 70 100 0 60
620 13Bl 20 0 0 40 690 16Al 0 0 70 40 760 18El 100 0 0 60
621 13B2 20 20 0 40 691 16A2 0 20 70 40 761 18E2 100 20 0 60
622 1383 20 40 0 40 692 16A3 0 40 70 40 762 18E3 100 40 0 60
623 13B4 20 70 0 40 693 16A4 0 70 70 40 763 18E4 100 70 0 60
624 13B5 20 100 0 40 694 16A5 0 100 70 40 764 18E5 100 100 0 60
625 13Cl
40 0 0 40 695 16Bl 20 0 70 40 765 19Al 0
0 20 60
626 13C2 40 20 0 40 696 16B2 20 20 70 40 766 19A2
0 20 20 60
627 13c3 40 40 0 40 697 16B3 20 40 70 40 767 19A3
0 40 20 60
628 13c4 40 70 0 40 698 16B4 20
70 70 40 768 19A4 0 70 20 60
629 13c5 40 100 0 40 699 16B5 20 100 70 40 769
19A5 0 100 20 60
630 1301
70 0 0 40 700 16Cl 40 0 70 40 770
1981 20 0 20 60
631 1302 70 20 0 40 701 16C2 40 20 70 40 771
19B2 20 20 20 60
632 13D3 70 40 0 40 702 16C3 40 40 70
40 772 19B3 20 40 20 60
633 1304 70 70 0 40 703 16C4 40 70 70
40 773 19B4 20 70 20 60
634 13D5 70 100 0 40
704 16C5 40 100 70 40 774 19B5 20 100 20 60
635 13El 100 0 0 40 705 16Dl 70 0 70
40 775 19Cl 40 0 20 60
636 13E2 100 20 0 40 706
1602 70 20 70 40 776 19C2 40 20 20 60
637 13E3 100 40 0 40 707 1603
70 40 70 40 777 19C3 40 40 20 60
638 13E4 100 70 0 40 708
16D4 70 70 70 40 778 19c4 40 70 20 60
639 13E5 100
100 0 40 709 16D5 70 100 70 40 779 19c5 40 100 20 60
640 14Al 0 0 20 40 710 16El
100 0 70 40 780 19Dl 70 0 20 60
641 14A2 0 20 20 40 711
16E2 100 20 70 40 781 19D2 70 20 20 60
642 14A3 0
40 20 40 712 16E3 100 40 70 40 782 1903 70 40 20 60
643 14A4 0
70 20 40 713 16E4 100 70 70 40 783 19D4 70 70 20 60
644 14A5 0 100 20 40 714 16E5 100 100 70 40 784
19D5 70 100 20 60
645 1481 20 0 20
40 715 17Al 0 0 100 40 785 19El 100
0 20 60
646 14B2 20 20 20 40 716 17A2 0 20 100
40 786 19E2 100 20 20 60
647 14B3 20 40 20 40 717 17A3 0 40 100
40 787 19E3 100 40 20 60
648 14B4 20 70 20 40 718 17A4 0
70 100 40 788 19E4 100 70 20 60
649 14B5 20 100 20 40 719 17A5
0 100 100 40 789 19E5 100 100 20 60
650 14Cl 40 0 20 40 720 1781 20
0 100 40 790 20Al 0 0 40 60
651 14C2 40 20
20 40 721 1782 20 20 100 40 791 20A2 0 20 40 60
652 14c3
40 40 20 40 722 17B3 20 40 100 40 792 20A3 0 40 40 60
653 14c4 40 70
20 40 723 17B4 20 70 100 40 793 2OA4 0 70 40 60
14c5 40 100 20 40 724 17B5 20 100 100 40 794 20A5 0 100 40 60
655 14Dl 70 0 20 40 725 17Cl 40 0
100 40 795 20Bl 20 0 40 60
656 14D2 70 20 20
40 726 17C2 40 20 100 40 796 20B2 20 20 40 60
657 1403 70 40 20 40 727
17c3 40 40 100 40 797 20B3 20 40 40 60
658 14D4 70 70 20
40 728 17c4 40 70 100 40 798 20B4 20 70 40 60
659 14D5 70
100 20 40 729 17c5 40 100 100 40 799 20B5 20 100 40 60
660 14El 100 0 20 40 730 17Dl
70 0 100 40 800 2OCl 40 0 40 60
661 14E2 100 20
20 40 731 1702 70 20 100 40 801 2OC2 40 20 40 60
14E3 100 40 20 40 732 17D3 70 40 100 40 802 2OC3 40
40 40 60
663 14E4
100 70 20 40 733 1704 70 70 100 40 803 2OC4 40 70
40 60
664 14E5 100 100 20 40 734 17D5
70 100 100 40 804 2OC5 40 100 40 60
665 15Al 0
0 40 40 735 17El 100 0 100 40 805 20Dl
70 0 40 60
666 15A2 0 20 40 40 736 17E2
100 20 100 40 806 20D2 70 20 40 60
667 15A3 0 40 40 40 737 17E3 100 40
100 40 807 20D3 70 40 40 60
668 15A4 0 70 40 40 738
17E4 100 70 100 40 808 20D4 70 70 40 60
669 15A5 0
100 40 40 739 17E5 100 100 100 40 809 20D5 70 100 40 60
670 15Bl 20 0 40 40 740 18Al 0
0 0 60 810 20El 100 0 40 60
671 15B2 20 20
40 40 741 18A2 0 20 0 60 811 20E2 100 20 40 60
672 15B3
20 40 40 40 742 18A3 0 40 0 60 812 20E3 100 40 40 60
0 IS0 IS0 12642:1996(E)
Table 2 (concluded)
Sample % Dot Sample % Dot Sample % Dot
ID Location* C M Y K ID LocatIon* C M Y K ID Location* C M Y K
813 20E4 100 70 40
60 852 22C3 40 40 100 60 891 24C3 70 70 40 80
* Location data is included for information only.
4.1.3 User-defined data set
For situations where it is deemed necessary to provide a larger or differently spaced ink value data set, the user
may define a data set of his own. The ink values selected shall be provided in accordance with 4.4.
4.2 Colour measurement
Spectrophotometric measurement and calculation of calorimetric data of the printed sheet should be made in
accordance with IS0 13655. For the purposes of this International Standard, in those specific situations where a
backing other than black is deemed more appropriate and is used in measurement, that exception to this
International Standard shall be noted.
NOTE - Additional measured or computed data may be reported as desired. The data file format of 4.4 and annex B provide
for the typical densitometric and calorimetric data reported.
4.3 Data reporting
Calorimetric data, measured in accordance with 4.2, shall be reported as CIE tristimulus values to two decimal
places using the data file format specified in 4.4.

IS0 12642:1996(E)
The following additional data shall be provided to adequately define the measuring conditions:
a) originator of the data;
b) date of creation of data;
c) a description of the purpose or contents of the data;
d) a description of the instrumentation used, including, but not limited to, the brand and model number;
e) measurement source (light source and filter) conditions used;
f) wavelength interval used.
4.4 Data file format
The file format shall be an ASCII format keyword value file.
NOTE - An ASCII keyword value file makes use of predefined keywords and data tables. All encoding uses the standard IS0
7-bit coded character set defined in ISO/lEC 646 and commonly referred to as ASCII. The combination of the ASCII encoding
and the keyword value relationship allows such files to be easily read by humans and machines. Values are associated with
the keyword which precedes them and remain in effect until another instance of the keyword-value pair. Provision is made to
define the format within data tables and to permit multiple occurrences of data tables. See annex B.
The first 7 characters in the file shall be - “lS12642”.
Fields within the file shall be separated by white space. Valid white space characters are space (position 2/O of
lSO/IEC 646), carriage return (position O/l 3 of lSO/IEC 646), newline (position O/IO of lSO/IEC 646), and tab
(position O/9 of lSO/IEC 646). Keywords may be separated from values using any valid white space character. Only
the space or tab shall precede a keyword on a line. Comments shall be preceded by a single comment character (a
single character keyword). The comment character is the “#” (position Z/3 of lSO/IEC 646) symbol. Keywords and
data format identifiers are case sensitive and shall be upper case.
The specific syntax and usage information for each keyword shall be as described below.
All files reporting data associated with is0 12642 shall include the following keywords.
IS12642 - Used to identify data related to this International Standard.
ORIGINATOR - Identifies the specific organization or system that created the data file.
DESCRIPTOR - Describes the purpose or contents of the data file.
CREATED - Date of creation of data file.
INSTRUMENTATION - Used to report the specific instrumentation used (manufacturer and model
number) to generate the data reported.
MEASUREMENT SOURCE - Illumination used for spectral measurements.
-
PRINT CONDITIONS - Used to define the characteristics of the printed sheet being reported.
-
NUMBER OF FIELDS - Number of fields (data format identifiers) that are included in the data format
- -
definition that follows.
BEGIN DATA FORMAT - Begins definition of field position/interpretation of a data set.
- -
END DATA FORMAT - Ends data format definition.
- -
NUMBER OF SETS
- - Number of repeats or sets of data corresponding to the data format fields that
-
are included in the data to follow.

IS0 12642:1996(E)
0 IS0
BEGIN DATA - Marks the beginning of the stream of data sets.
-
- Marks the end of the stream of data sets.
END DATA
-
The following additional keywords may be used.
- Single character indicating comment follows
#
KEYWORD - Used to define vendor specific keywords or data format identifiers.
- Used to define the characteristics of the printed sheet being reported.
PRINT CONDITIONS
-
FILTER STATUS - Defines spectral response of the instrument used for densitometry.
-
4.4.1 Values
Unless otherwise noted each keyword has a character string value associated with it. All character string values
shall be enclosed in quotes (position Z/2 of lSO/IEC 646) regardless of whether there is white space contained
within the string. Enclosed in quotes means beginning and ending the character string with the ” symbol. The
” symbol itself is represented within a string as “‘I.
ts are prece ded by the comment character (#), and end with a new line, or carriage return. Comments
Commen
need not be enclosed in ” symbols.
The value associated with keywords NUMBER-OF-FIELDS and NUMBER-OF-SETS shall be an integer.
The BEGIN-, END keywords do not have explicit values associated with them but enclose either the data format
definition or associated data streams.
.4.2 Data format identifiers
FORMAT) describes the meaning of each field
Data format (enclosed by BEGIN DATA - FORMAT and END - DATA -
-
of data within a set. Data formats shall be composed of identifiers listed below, or defined keywords. Unknown
entries in the data format definition shall be read, but may be ignored by automated readers. Data format
identifiers shall be upper case. The data type associated with each data format is assumed to be real (may contain
a decimal point) unless separately defined as integer (I) or character string (CS). Character string data shall be
enclosed in quotation marks except in the case of SAMPLE-ID where the quotation marks are not required if the
sample identifier does not contain white space.
Each data repeat shall be divided by a line terminator character, e.g. newline (OIO), carriage return (013).
The following data format identifiers are defined for use with this International Standard. Where
...