ISO 12642-1:1996
(Main)Graphic technology — Input data for characterization of 4-colour process printing — Part 1: Initial data set
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)
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INTERNATIONAL
12642
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)
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IS0 12642:1996(E)
Contents
Page
. . .
III
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreword
iv
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Normative references
1
3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
2
................................................................................
4 Requirements
.................................. 2
4.1 Data set definition .
2
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
7
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
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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
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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
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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
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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.
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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.
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IS0 12642:1996(E)
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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.
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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
183
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
185
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
187
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
189
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
196
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
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
0
275 3D3 40 20 20 0 345 501 40 0 70
205 ID5 40 70 0 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
0
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
0
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
219
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
223
364 6A2 0 10 100 0
2A6 0 100 10 0 294 4A4 0 40 40 0
224
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
0
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
238
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
241
242 206 40 100 10 0 312 4D4 40 40 40 0 382 6D2 40 10 100 0
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
0
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
0
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
---------------------- Page: 12 ----------------------
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
...
SLOVENSKI STANDARD
SIST ISO 12642-1:2008
01-junij-2008
*UDILþQDWHKQRORJLMD9KRGQLSRGDWNL]DRSLVEDUYQHJDWLVNDVSURFHVQLPL
EDUYDPLGHO 2VQRYQLSRGDWNL ]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
SIST ISO 12642-1:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
INTERNATIONAL
12642
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)
---------------------- Page: 2 ----------------------
IS0 12642:1996(E)
Contents
Page
. . .
III
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreword
iv
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Normative references
1
3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
2
................................................................................
4 Requirements
.................................. 2
4.1 Data set definition .
2
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
7
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
---------------------- Page: 3 ----------------------
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.
---------------------- Page: 4 ----------------------
@ 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
---------------------- Page: 5 ----------------------
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
---------------------- Page: 6 ----------------------
@ 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
---------------------- Page: 7 ----------------------
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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---------------------- Page: 9 ----------------------
-
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.
---------------------- Page: 10 ----------------------
@ 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.
---------------------- Page: 11 ----------------------
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.
---------------------- Page: 12 ----------------------
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
183
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
185
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
187
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
189
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
196
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
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
0
275 3D3 40 20 20 0 345 501 40 0 70
205 ID5 40 70 0 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
0
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
0
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
219
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
223
364 6A2 0 10 100 0
2A6 0 100 10 0 294 4A4 0 40 40 0
224
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
0
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
238
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
241
242 206 40 100 10 0 312 4D4 40 40 40 0 382 6D2 40 10 100 0
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
0
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
0
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
---------------------- Page: 13 ----------------------
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 2
...
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