SIST ISO 19302:2020

INTERNATIONAL ISO
STANDARD 19302
First edition
2018-12
Graphic technology — Colour
conformity of printing workflows
Reference number
©
ISO 2018
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Printing workflow requirements . 3
4.1 Job colour definition . 3
4.1.1 General. 3
4.1.2 Digital file creation . 4
4.1.3 Graphic content . 4
4.1.4 Spot colour and device colour build . 4
4.2 Process colour reproduction . 5
4.2.1 Colour management . 5
4.2.2 Prepress . 6
4.2.3 Process control . 6
4.3 Product colour conformity . 7
4.3.1 General. 7
4.3.2 Print control . 7
4.3.3 Colour control. 7
5 Printing workflow standards requirements. 8
5.1 Job colour definition . 8
5.1.1 Digital file creation . 8
5.1.2 Validation print production . 8
5.1.3 Proofing . 8
5.2 Process colour reproduction . 8
5.2.1 Colour management . 8
5.2.2 Prepress . 9
5.2.3 Prepress for commercial printing . 9
5.2.4 Prepress for packaging printing . 9
5.2.5 Process control . 9
5.3 Product colour conformity . 9
5.3.1 Print control . 9
5.3.2 Colour control.10
5.4 Measurement conditions . .10
5.4.1 General.10
5.4.2 Measurement conditions for commercial printing .11
5.4.3 Measurement conditions for packaging printing .11
5.5 Viewing and illumination .11
5.6 Sampling .11
6 Scoring schema .12
7 Reporting .12
Annex A (informative) Colour control .13
Annex B (informative) Information exchange .14
Annex C (informative) Typical scoring schemas .15
Bibliography .17
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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 130, Graphic technology.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved

Introduction
The printing industry comprises a variety of workflows that produce a variety of printed products. For
tone and colour reproduction, many ISO standards specify aims and tolerances and they are necessary
for the implementation of a colour-managed and standardized workflow.
Even though relevant standards can specify aims and tolerances, the printer’s ability to demonstrate
conformity of their entire production workflow to these standards often becomes a technical issue as
well as a business issue.
Printed colour reproduction quality depends on printing workflow operation. Printing workflow
operation is made up of colour definition (what colour to specify), process colour reproduction
requirements (what to control) and colour conformity (verify the outcome of the process).
There is a need to provide printers, suppliers, customers and independent bodies with guidelines that
will allow them to implement and/or assess a printing workflow in order to achieve and demonstrate
conformity of printed products.
This document recognizes and makes provisions for the following:
a) conditions and test methods for file generation conformity;
b) conditions and test methods for file colour separation conformity;
c) conditions and test methods for spot colour and/or composite colour conformity;
d) conditions and test methods for soft proofing conformity;
e) conditions and test methods for hard proofing conformity;
f) conditions and test methods for viewing conditions conformity;
g) conditions and test methods for the evaluation of process, print and colour conformity with respect
to specified reference printing conditions (RPCs).
This document is applicable to all printing applications including CMYK, CMYK + spot, spot only, non-
CMYK-based processes and multicolour printing.
This document defines the three main production stages of a printed product as follows:
1) colour definition: the first stage where the customer and design services choose the desired brand
and visual colours;
2) colour reproduction: the production process which starts upon reception of the job file and ends
when the job is printed;
3) colour conformity: the stage which is necessary for the evaluation of the conformity of a printed job.
This document provides:
— a reference framework description for a typical standardized printing workflow (CMYK, CMYK
with spot, non CMYK, spot only and multicolour);
— required International Standards applicable at each stage of a standardized printing workflow;
— a description of expected setup, calibration and process control operations required at each stage of
printing workflow according to the appropriate International Standards;
— a definition of test conditions for colour conformity activities when these are not clearly mentioned
in the relevant standard.
INTERNATIONAL STANDARD ISO 19302:2018(E)
Graphic technology — Colour co
...

INTERNATIONAL ISO
STANDARD 19302
First edition
2018-12
Graphic technology — Colour
conformity of printing workflows
Reference number
©
ISO 2018
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Printing workflow requirements . 3
4.1 Job colour definition . 3
4.1.1 General. 3
4.1.2 Digital file creation . 4
4.1.3 Graphic content . 4
4.1.4 Spot colour and device colour build . 4
4.2 Process colour reproduction . 5
4.2.1 Colour management . 5
4.2.2 Prepress . 6
4.2.3 Process control . 6
4.3 Product colour conformity . 7
4.3.1 General. 7
4.3.2 Print control . 7
4.3.3 Colour control. 7
5 Printing workflow standards requirements. 8
5.1 Job colour definition . 8
5.1.1 Digital file creation . 8
5.1.2 Validation print production . 8
5.1.3 Proofing . 8
5.2 Process colour reproduction . 8
5.2.1 Colour management . 8
5.2.2 Prepress . 9
5.2.3 Prepress for commercial printing . 9
5.2.4 Prepress for packaging printing . 9
5.2.5 Process control . 9
5.3 Product colour conformity . 9
5.3.1 Print control . 9
5.3.2 Colour control.10
5.4 Measurement conditions . .10
5.4.1 General.10
5.4.2 Measurement conditions for commercial printing .11
5.4.3 Measurement conditions for packaging printing .11
5.5 Viewing and illumination .11
5.6 Sampling .11
6 Scoring schema .12
7 Reporting .12
Annex A (informative) Colour control .13
Annex B (informative) Information exchange .14
Annex C (informative) Typical scoring schemas .15
Bibliography .17
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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 130, Graphic technology.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved

Introduction
The printing industry comprises a variety of workflows that produce a variety of printed products. For
tone and colour reproduction, many ISO standards specify aims and tolerances and they are necessary
for the implementation of a colour-managed and standardized workflow.
Even though relevant standards can specify aims and tolerances, the printer’s ability to demonstrate
conformity of their entire production workflow to these standards often becomes a technical issue as
well as a business issue.
Printed colour reproduction quality depends on printing workflow operation. Printing workflow
operation is made up of colour definition (what colour to specify), process colour reproduction
requirements (what to control) and colour conformity (verify the outcome of the process).
There is a need to provide printers, suppliers, customers and independent bodies with guidelines that
will allow them to implement and/or assess a printing workflow in order to achieve and demonstrate
conformity of printed products.
This document recognizes and makes provisions for the following:
a) conditions and test methods for file generation conformity;
b) conditions and test methods for file colour separation conformity;
c) conditions and test methods for spot colour and/or composite colour conformity;
d) conditions and test methods for soft proofing conformity;
e) conditions and test methods for hard proofing conformity;
f) conditions and test methods for viewing conditions conformity;
g) conditions and test methods for the evaluation of process, print and colour conformity with respect
to specified reference printing conditions (RPCs).
This document is applicable to all printing applications including CMYK, CMYK + spot, spot only, non-
CMYK-based processes and multicolour printing.
This document defines the three main production stages of a printed product as follows:
1) colour definition: the first stage where the customer and design services choose the desired brand
and visual colours;
2) colour reproduction: the production process which starts upon reception of the job file and ends
when the job is printed;
3) colour conformity: the stage which is necessary for the evaluation of the conformity of a printed job.
This document provides:
— a reference framework description for a typical standardized printing workflow (CMYK, CMYK
with spot, non CMYK, spot only and multicolour);
— required International Standards applicable at each stage of a standardized printing workflow;
— a description of expected setup, calibration and process control operations required at each stage of
printing workflow according to the appropriate International Standards;
— a definition of test conditions for colour conformity activities when these are not clearly mentioned
in the relevant standard.
INTERNATIONAL STANDARD ISO 19302:2018(E)
Graphic technology — Colour co
...