ISO/PAS 18940-1:2023

Imaging materials — Image permanence specification of reflection photographic prints for indoor applications — Part 1: Test methods

This document specifies the test methods, the test conditions, the test target design, and the analysis procedures for the evaluation of the image permanence performance of digital photographic reflection prints. Tests based on ISO 18936, ISO 18937 (all parts), ISO 18941, and ISO 18946 characterize the thermal stability, the light stability, the ozone stability, and the humidity stability of photographic prints. This document is applicable to any digital photographic reflection print, which includes prints created by chromogenic silver halide, inkjet, electrophotography, thermal diffusion, and others. Black and white prints composed of metallic silver are not within the scope, but monochrome prints where the printing process contains dyes are within the scope. The document specifies the content and procedure for graphical reporting of test results as a first level data collection for basic technical communication of image permanence performance of photographic prints. Application-specific end-points, environmental conditions and test doses (durations, intensity) are not included in this document.

Matériaux pour l'image — Spécification relative à la permanence de l’image des tirages photographiques par réflexion pour applications intérieures — Partie 1: Méthodes d'essai

General Information

• Status: Published
• Publication Date: 07-Sep-2023
• ICS: 37.040.20 - Photographic paper, films and plates. Cartridges
• Technical Committee: ISO/TC 42 - Photography
• Drafting Committee: ISO/TC 42 - Photography
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 08-Feb-2024

Standards Content (Sample)

PUBLICLY ISO/PAS
AVAILABLE 18940-1
SPECIFICATION
First edition
2023-09
Imaging materials — Image
permanence specification of reflection
photographic prints for indoor
applications —
Part 1:
Test methods
Matériaux pour l'image — Spécification relative à la permanence de
l’image des tirages photographiques par réflexion pour applications
intérieures —
Partie 1: Méthodes d'essai
Reference number
ISO/PAS 18940-1:2023(E)
© ISO 2023

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ISO/PAS 18940-1:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2023 – All rights reserved

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ISO/PAS 18940-1:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviations . 2
3.1 Terms and definitions . 2
3.2 Abbreviations . 2
4 Requirements . 2
5 Test procedures . 2
5.1 Test target . 2
5.2 Light stability test . . 3
5.3 Ozone gas stability test . 4
5.4 Thermal stability test . 4
5.5 Humidity fastness test in high humidity condition . 4
6 Measurement .4
7 Data processing and graph creation .4
7.1 Data processing. 4
7.2 Calculation of colour difference .
...

FINAL
PUBLICLY ISO/DPAS
DRAFT
AVAILABLE 18940-1
SPECIFICATION
ISO/TC 42
Imaging materials — Image
Secretariat: ANSI
permanence specification of reflection
Voting begins on:
2023-03-02 photographic prints for indoor
applications —
Voting terminates on:
2023-04-27
Part 1:
Test methods
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/DPAS 18940-1:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/DPAS 18940-1:2023(E)
FINAL
PUBLICLY ISO/DPAS
DRAFT
AVAILABLE 18940-1
SPECIFICATION
ISO/TC 42
Imaging materials — Image
Secretariat: ANSI
permanence specification of reflection
Voting begins on:
photographic prints for indoor
applications —
Voting terminates on:
Part 1:
Test methods
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/DPAS 18940-1:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/DPAS 18940-1:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 Terms and definitions . 2
3.2 Abbreviations . 2
4 Requirements . 2
5 Test procedures . 2
5.1 Test target . 2
5.2 Light stability test . . 3
5.3 Ozone gas stability test .
...

ISO/DPAS 18940-1:2023(E)
ISO TC 42/WG 5
Date: 2023-02-02xx
Secretariat: ANSI
Imaging materials — Image permanence specification of reflection photographic prints
for indoor applications — Part 1: Test methods

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ISO/DPAS 18940-1:2023(E) Formatted: Font: Calibri
© ISO 2023, Published in Switzerland
Commented [eXtyles1]: The reference is to a withdrawn
standard which has been replaced
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or

ISO 20344, Personal protective equipment — Test methods
utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or
for footwear
posting on the internet or an intranet, without prior written permission. Permission can be requested
Formatted: Font: Calibri
from either ISO at the address below or ISO’s member body in the country of the requester.
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ISO copyright office
Formatted: Font: Calibri
Ch. de Blandonnet 8 • CP 401
Formatted: Pattern: Clear
Formatted: Font: Calibri
CH-1214 Vernier, Geneva, Switzerland
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
[e-mail]
www.iso.org
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Formatted: Font: Calibri
Formatted: Font: Calibri, English (United States)
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ii © ISO 2023 – All rights reserved

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ISO/DPAS 18940-1:2023(E) Formatted: Font: Calibri
Contents
Foreword iv
Formatted: Font: Calibri
Introduction v
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
3.1 Terms 2
3.2 Abbreviations 2
4 Requirements 2
5 Test procedures 2
5.1 Test target 2
5.2 Light stability test 3
5.3 Ozone gas stability test 4
5.4 Thermal stability test 4
5.5 Humidity fastness test in high humidity condition 4
6 Measurement 4
7 Data processing and graph creation 4
7.1 Data processing 4
7.2 Calculation of colour difference 5
7.3 Graph reporting6
7.3.1 General 6
7.3.2 Light stability 7
7.3.3 Ozone gas stability 8
7.3.4 Thermal stability 9
7.3.5 Humidity fastness in high humidity conditions 9
8 Reporting 10
8.1 Internal recording 10
8.2 Reporting for external communications 11
Bibliography 12
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Formatted: Font: Calibri, English (United States)
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© ISO 2023 – All rights reserved iii

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ISO/DPAS 18940-1:2023(E) Formatted: Font: Calibri
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
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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
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For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
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World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 42, Photography.
A list of all parts in the ISO 18940 series can be found on the ISO website.
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Any feedback or questions on this document should be directed to the user’s national standards body. A
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complete listing of these bodies can be found at www.iso.org/members.html.
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