Graphic technology — Process control for the manufacture of half-tone colour separations, proof and production prints — Part 5: Screen printing

This part of ISO 12647 specifies a number of process parameters and their values to be applied when preparing colour separations for four-colour screen process printing when producing four-colour proof and production prints by flat bed or cylinder screen printing. The parameters and values are chosen in view of the complete process covering the following process stages: colour separation, making of the printing forme, proof production, production printing, and surface finishing.

Technologie graphique — Contrôle du processus de confection de sélections couleurs tramées, d'épreuves et de tirages — Partie 5: Sérigraphie

Grafična tehnologija - Vodenje procesa izdelave rastriranih barvnih izvlečkov, preskusnih in proizvodnih odtisov - 5. del: Sitotisk

General Information

Status
Withdrawn
Publication Date
19-Dec-2001
Withdrawal Date
19-Dec-2001
Current Stage
9599 - Withdrawal of International Standard
Start Date
07-Jan-2015
Completion Date
07-Jan-2015

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INTERNATIONAL ISO
STANDARD 12647-5
First edition
2001-12-15
Graphic technology — Process control for
the manufacture of half-tone colour
separations, proof and production prints —
Part 5:
Screen printing
Technologie graphique — Contrôle du processus de confection de
sélections couleurs tramées, d'épreuves et de tirages —
Partie 5: Sérigraphie
Reference number
ISO 12647-5:2001(E)
ISO 2001
---------------------- Page: 1 ----------------------
ISO 12647-5:2001(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not

be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this

file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this

area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters

were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event

that a problem relating to it is found, please inform the Central Secretariat at the address given below.

© ISO 2001

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 either ISO at the address below or ISO's member body

in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.ch
Web www.iso.ch
Printed in Switzerland
ii © ISO 2001 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 12647-5:2001(E)
Contents Page

Foreword.....................................................................................................................................................................iv

Introduction.................................................................................................................................................................v

1 Scope..............................................................................................................................................................1

2 Normative references....................................................................................................................................1

3 Terms and definitions ...................................................................................................................................1

4 Requirements.................................................................................................................................................2

4.1 General............................................................................................................................................................2

4.2 Colour separation films.................................................................................................................................2

4.2.1 Quality.............................................................................................................................................................2

4.2.2 Screen ruling..................................................................................................................................................2

4.2.3 Screen angle..................................................................................................................................................2

4.2.4 Dot shape and its relationship to tone value..............................................................................................3

4.2.5 Image size tolerance......................................................................................................................................3

4.2.6 Tone value sum..............................................................................................................................................3

4.2.7 Grey balance..................................................................................................................................................4

4.3 Print.................................................................................................................................................................4

4.3.1 Visual characteristics of image components .............................................................................................4

4.3.2 Tone value reproduction limits ....................................................................................................................5

4.3.3 Tolerance for image positioning ..................................................................................................................6

4.3.4 Tone value increase ......................................................................................................................................6

5 Test method and reporting: Tone value measurements on a print..........................................................8

5.1 Film-based and digitally generated control strips .....................................................................................8

5.2 Reporting of results.......................................................................................................................................8

Annex A (informative) Ink set colours as measured under non-normative conditions.......................................9

Bibliography..............................................................................................................................................................10

© ISO 2001 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 12647-5:2001(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO

member bodies). The work of preparing International Standards is normally carried out through ISO technical

committees. Each member body interested in a subject for which a technical committee has been established has

the right to be represented on that committee. International organizations, governmental and non-governmental, in

liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical

Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

The main task of technical committees is to prepare International Standards. 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.

Attention is drawn to the possibility that some of the elements of this part of ISO 12647 may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 12647-5 was prepared by Technical Committee ISO/TC 130, Graphic technology.

ISO 12647 consists of the following parts, under the general title Graphic technology — Process control for the

manufacture of half-tone colour separations, proof and production prints:
— Part 1: Parameters and measurement methods
— Part 2: Offset lithographic processes
— Part 3: Coldset offset lithography and letterpress on newsprint
— Part 4: Publication gravure process
— Part 5: Screen printing
— Part 6: Flexographic printing

— Part 7: Processes using digital printing or reproductions made on various traditional printing processes from

digital files
Annex A of this part of ISO 12647 is for information only.
iv © ISO 2001 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 12647-5:2001(E)
Introduction

When producing a half-tone colour reproduction it is important that the colour separator, proofer and printer have

previously specified a minimum set of parameters that uniquely define the visual characteristics and other technical

properties of the planned print product. Such an agreement enables the correct production of suitable separations

(without recourse to “trial and error”) and subsequent production of off-press or on press proof prints from these

separations whose purpose is to simulate the visual characteristics of the finished print product as closely as

possible.

It is necessary to distinguish between primary and secondary parameters. Whereas primary parameters, which are

described in this part of ISO 12647, are defined here as having a direct bearing on the visual characteristics of the

image, secondary parameters only influence the image indirectly by changing the values of primary parameters.

Secondary parameters include:
 colour separation film thickness;
 film polarity (negative or positive);
 roughness of the emulsion surface;
 presence of colour marking or register marks.

It is the purpose of ISO 12647-1 to list and explain the minimum set of process parameters required to uniquely

define the visual characteristics and related technical properties of a half-tone proof or production print produced

from a set of half-tone separation films.

It is the purpose of this part of ISO 12647 to list suggested values or sets of values of the primary parameters

specified in ISO 12647-1 and related technical properties of a half-tone screen print produced from a set of half-tone

colour separation films. Secondary parameters are also recommended for specification where deemed useful.

© ISO 2001 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 12647-5:2001(E)
Graphic technology — Process control for the manufacture of
half-tone colour separations, proof and production prints —
Part 5:
Screen printing
1 Scope

This part of ISO 12647 specifies a number of process parameters and their values to be applied when preparing

colour separations for four-colour screen process printing when producing four-colour proof and production prints

by flat bed or cylinder screen printing.

The parameters and values are chosen in view of the complete process covering the following process stages:

 colour separation,
 making of the printing forme,
 proof production,
 production printing,
 surface finishing.
2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of

this part of ISO 12647. For dated references, subsequent amendments to, or revisions of, any of these publications

do not apply. However, parties to agreements based on this part of ISO 12647 are encouraged to investigate the

possibility of applying the most recent editions of the normative documents indicated below. For undated

references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain

registers of currently valid International Standards.
ISO 5-3, Photography — Density measurements — Part 3: Spectral conditions

ISO 2846-4, Graphic technology — Colour and transparency of printing ink sets for four-colour printing — Part 4:

Screen printing

ISO 12637-5, Graphic technology — Multilingual terminology of printing arts — Part 5: Screen printing terms

ISO 12647-1:1996, Graphic technology — Process control for the manufacture of half-tone colour separations,

proof and production prints — Part 1: Parameters and measurement methods

ISO 13655, Graphic technology — Spectral measurement and colorimetric computation for graphic arts images

3 Terms and definitions

For the purposes of this part of ISO 12647, the terms and definitions given in ISO 12647-1 and ISO 12647-5 apply.

© ISO 2001 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO 12647-5:2001(E)
4 Requirements
4.1 General

The following subclauses are arranged according to the order set out in ISO 12647-1; they also depend on it for the

definition of parameters and test methods.
4.2 Colour separation films
4.2.1 Quality

Unless otherwise specified, the core density shall be at least 3,5 above the transmission density of the clear film

(film base plus fog). The transmission density in the centre of a clear half-tone dot shall not be more than 0,1 above

the corresponding value of a large clear area. The transmission density of the clear film shall not be higher than

0,15. Both measurements shall be made with a (UV) transmission densitometer whose spectral products conform

to ISO type 1 printing density as defined in ISO 5-3. The fringe width shall not be greater than one fortieth of the

screen width; the half-tone dot shall not be split up in distinct parts. The colour separation film quality shall be

evaluated according to ISO 12647-1:1996, annex B.
NOTE 1 The clear film density requirement is based on the understanding

 that the density range of the clear areas of all films that are to be exposed onto a screen printing forme, for consistent

work, needs to be less than 0,10;

 that 0,05 represents the lowest commonly found value for ISO type 1 printing density.

In order to minimize the impact of the use of half-tone films with clear film densities above this range, agreements between the

supplier of colour separations and the recipient are required. Contacting or duplicating can also be used to bring half-tone films

with dissimilar clear film densities into agreement.

NOTE 2 As a practical guide, a core density of 3,5 above the clear film density will normally be achieved if the density of

large solid areas is more than 4,5 above the clear film density.

NOTE 3 If a user wishes to use a blue filter for transmission density measurements it is necessary to determine, for the

particular film type and processing conditions, the correlation between densities obtained with the blue filter and those obtained

with an ISO type 1 printing density instrument. For the measurement of core density an ISO type 2 printing instrument may be

used.
4.2.2 Screen ruling
−1 −1
The screen ruling (screen frequency) shall be within the range 20 cm to 40 cm .
−1 −1
...

SLOVENSKI STANDARD
SIST ISO 12647-5:2002
01-november-2002
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SUHVNXVQLKLQSURL]YRGQLKRGWLVRYGHO6LWRWLVN
Graphic technology -- Process control for the manufacture of half-tone colour
separations, proof and production prints -- Part 5: Screen printing

Technologie graphique -- Contrôle du processus de confection de sélections couleurs

tramées, d'épreuves et de tirages -- Partie 5: Sérigraphie
Ta slovenski standard je istoveten z: ISO 12647-5:2001
ICS:
37.100.01 *UDILþQDWHKQRORJLMDQD Graphic technology in
VSORãQR general
SIST ISO 12647-5:2002 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 12647-5:2002
---------------------- Page: 2 ----------------------
SIST ISO 12647-5:2002
INTERNATIONAL ISO
STANDARD 12647-5
First edition
2001-12-15
Graphic technology — Process control for
the manufacture of half-tone colour
separations, proof and production prints —
Part 5:
Screen printing
Technologie graphique — Contrôle du processus de confection de
sélections couleurs tramées, d'épreuves et de tirages —
Partie 5: Sérigraphie
Reference number
ISO 12647-5:2001(E)
ISO 2001
---------------------- Page: 3 ----------------------
SIST ISO 12647-5:2002
ISO 12647-5:2001(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not

be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this

file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this

area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters

were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event

that a problem relating to it is found, please inform the Central Secretariat at the address given below.

© ISO 2001

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 either ISO at the address below or ISO's member body

in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.ch
Web www.iso.ch
Printed in Switzerland
ii © ISO 2001 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 12647-5:2002
ISO 12647-5:2001(E)
Contents Page

Foreword.....................................................................................................................................................................iv

Introduction.................................................................................................................................................................v

1 Scope..............................................................................................................................................................1

2 Normative references....................................................................................................................................1

3 Terms and definitions ...................................................................................................................................1

4 Requirements.................................................................................................................................................2

4.1 General............................................................................................................................................................2

4.2 Colour separation films.................................................................................................................................2

4.2.1 Quality.............................................................................................................................................................2

4.2.2 Screen ruling..................................................................................................................................................2

4.2.3 Screen angle..................................................................................................................................................2

4.2.4 Dot shape and its relationship to tone value..............................................................................................3

4.2.5 Image size tolerance......................................................................................................................................3

4.2.6 Tone value sum..............................................................................................................................................3

4.2.7 Grey balance..................................................................................................................................................4

4.3 Print.................................................................................................................................................................4

4.3.1 Visual characteristics of image components .............................................................................................4

4.3.2 Tone value reproduction limits ....................................................................................................................5

4.3.3 Tolerance for image positioning ..................................................................................................................6

4.3.4 Tone value increase ......................................................................................................................................6

5 Test method and reporting: Tone value measurements on a print..........................................................8

5.1 Film-based and digitally generated control strips .....................................................................................8

5.2 Reporting of results.......................................................................................................................................8

Annex A (informative) Ink set colours as measured under non-normative conditions.......................................9

Bibliography..............................................................................................................................................................10

© ISO 2001 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 12647-5:2002
ISO 12647-5:2001(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO

member bodies). The work of preparing International Standards is normally carried out through ISO technical

committees. Each member body interested in a subject for which a technical committee has been established has

the right to be represented on that committee. International organizations, governmental and non-governmental, in

liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical

Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

The main task of technical committees is to prepare International Standards. 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.

Attention is drawn to the possibility that some of the elements of this part of ISO 12647 may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 12647-5 was prepared by Technical Committee ISO/TC 130, Graphic technology.

ISO 12647 consists of the following parts, under the general title Graphic technology — Process control for the

manufacture of half-tone colour separations, proof and production prints:
— Part 1: Parameters and measurement methods
— Part 2: Offset lithographic processes
— Part 3: Coldset offset lithography and letterpress on newsprint
— Part 4: Publication gravure process
— Part 5: Screen printing
— Part 6: Flexographic printing

— Part 7: Processes using digital printing or reproductions made on various traditional printing processes from

digital files
Annex A of this part of ISO 12647 is for information only.
iv © ISO 2001 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 12647-5:2002
ISO 12647-5:2001(E)
Introduction

When producing a half-tone colour reproduction it is important that the colour separator, proofer and printer have

previously specified a minimum set of parameters that uniquely define the visual characteristics and other technical

properties of the planned print product. Such an agreement enables the correct production of suitable separations

(without recourse to “trial and error”) and subsequent production of off-press or on press proof prints from these

separations whose purpose is to simulate the visual characteristics of the finished print product as closely as

possible.

It is necessary to distinguish between primary and secondary parameters. Whereas primary parameters, which are

described in this part of ISO 12647, are defined here as having a direct bearing on the visual characteristics of the

image, secondary parameters only influence the image indirectly by changing the values of primary parameters.

Secondary parameters include:
 colour separation film thickness;
 film polarity (negative or positive);
 roughness of the emulsion surface;
 presence of colour marking or register marks.

It is the purpose of ISO 12647-1 to list and explain the minimum set of process parameters required to uniquely

define the visual characteristics and related technical properties of a half-tone proof or production print produced

from a set of half-tone separation films.

It is the purpose of this part of ISO 12647 to list suggested values or sets of values of the primary parameters

specified in ISO 12647-1 and related technical properties of a half-tone screen print produced from a set of half-tone

colour separation films. Secondary parameters are also recommended for specification where deemed useful.

© ISO 2001 – All rights reserved v
---------------------- Page: 7 ----------------------
SIST ISO 12647-5:2002
---------------------- Page: 8 ----------------------
SIST ISO 12647-5:2002
INTERNATIONAL STANDARD ISO 12647-5:2001(E)
Graphic technology — Process control for the manufacture of
half-tone colour separations, proof and production prints —
Part 5:
Screen printing
1 Scope

This part of ISO 12647 specifies a number of process parameters and their values to be applied when preparing

colour separations for four-colour screen process printing when producing four-colour proof and production prints

by flat bed or cylinder screen printing.

The parameters and values are chosen in view of the complete process covering the following process stages:

 colour separation,
 making of the printing forme,
 proof production,
 production printing,
 surface finishing.
2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of

this part of ISO 12647. For dated references, subsequent amendments to, or revisions of, any of these publications

do not apply. However, parties to agreements based on this part of ISO 12647 are encouraged to investigate the

possibility of applying the most recent editions of the normative documents indicated below. For undated

references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain

registers of currently valid International Standards.
ISO 5-3, Photography — Density measurements — Part 3: Spectral conditions

ISO 2846-4, Graphic technology — Colour and transparency of printing ink sets for four-colour printing — Part 4:

Screen printing

ISO 12637-5, Graphic technology — Multilingual terminology of printing arts — Part 5: Screen printing terms

ISO 12647-1:1996, Graphic technology — Process control for the manufacture of half-tone colour separations,

proof and production prints — Part 1: Parameters and measurement methods

ISO 13655, Graphic technology — Spectral measurement and colorimetric computation for graphic arts images

3 Terms and definitions

For the purposes of this part of ISO 12647, the terms and definitions given in ISO 12647-1 and ISO 12647-5 apply.

© ISO 2001 – All rights reserved 1
---------------------- Page: 9 ----------------------
SIST ISO 12647-5:2002
ISO 12647-5:2001(E)
4 Requirements
4.1 General

The following subclauses are arranged according to the order set out in ISO 12647-1; they also depend on it for the

definition of parameters and test methods.
4.2 Colour separation films
4.2.1 Quality

Unless otherwise specified, the core density shall be at least 3,5 above the transmission density of the clear film

(film base plus fog). The transmission density in the centre of a clear half-tone dot shall not be more than 0,1 above

the corresponding value of a large clear area. The transmission density of the clear film shall not be higher than

0,15. Both measurements shall be made with a (UV) transmission densitometer whose spectral products conform

to ISO type 1 printing density as defined in ISO 5-3. The fringe width shall not be greater than one fortieth of the

screen width; the half-tone dot shall not be split up in distinct parts. The colour separation film quality shall be

evaluated according to ISO 12647-1:1996, annex B.
NOTE 1 The clear film density requirement is based on the understanding

 that the density range of the clear areas of all films that are to be exposed onto a screen printing forme, for consistent

work, needs to be less than 0,10;

 that 0,05 represents the lowest commonly found value for ISO type 1 printing density.

In order to minimize the impact of the use of half-tone films with clear film densities above this range, agreements between the

supplier of colour separations and the recipient are required. Contacting or duplicating can also be used to bring half-tone films

with dissimilar clear film densities into agreement.

NOTE 2 As a practical guide, a core density of 3,5 above the clear film density will normally be achieved if the density of

large solid areas i
...

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