ISO 18946:2023

Imaging materials — Reflection colour photographic prints — Method for testing humidity fastness

This document describes test methods for evaluating reflection colour photographic prints with regard to changes in image appearance resulting from exposure to high relative humidity. NOTE Testing under low humidity conditions is described in ISO 18949. The observed changes relate to colour, tone and loss of sharpness caused by horizontal and vertical diffusion of colorants from exposure to elevated humidity levels. Other humidity-related factors, such as mould and mildew growth, and physical damage, such as curl, cockle, cracking or delamination due to humidity cycling, are outside the scope of this test method. Although the method and procedures described in this document can be used to test any colour hardcopy technology, it is particularly appropriate to systems where the colorants are applied by a mechanism involving the diffusion of colorant into image-receiving layers (for example inkjet or dye diffusion processes) or applied onto uncoated fibrous materials such as paper.

Matériaux pour l'image — Tirages photographiques en couleurs par réflexion — Méthode d'essai de la solidité à l'humidité

General Information

• Status: Published
• Publication Date: 18-Dec-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: 6060 - International Standard published
• Start Date: 19-Dec-2023
• Due Date: 09-Aug-2024
• Completion Date: 19-Dec-2023

Relations

• Revises: ISO 18946:2011 - Imaging materials — Reflection colour photographic prints — Method for testing humidity fastness
• Effective Date: 06-Jun-2022

Standards Content (Sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 18946
ISO/TC 42
Imaging materials — Reflection colour
Secretariat: ANSI
photographic prints — Method for
Voting begins on:
2023-09-28 testing humidity fastness
Voting terminates on:
Matériaux pour l'image — Tirages photographiques en couleurs par
2023-11-23
réflexion — Méthode d'essai de la solidité à l'humidité
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/FDIS 18946:2023(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/FDIS 18946:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 18946
ISO/TC 42
Imaging materials — Reflection colour
Secretariat: ANSI
photographic prints — Method for
Voting begins on:
testing humidity fastness
Voting terminates on:
Matériaux pour l'image — Tirages photographiques en couleurs par
réflexion — Méthode d'essai de la solidité à l'humidité
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/FDIS 18946:2023(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/FDIS 18946:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
5 Outline of test procedure .2
6 Sample preparation .3
6.1 General . 3
6.2 Test target . 4
6.3 Printer driver setting .
...

ISO/FDIS 18946:2023(E)
Style Definition: Heading 1: Indent: Left: 0 pt, First
line: 0 pt, Tab stops: Not at 21.6 pt
ISO TC 42/WG 5
Style Definition: Heading 2: Font: Bold, Tab stops: Not
at 18 pt
Secretariat: ANSI
Style Definition: Heading 3: Font: Bold
Style Definition: Heading 4: Font: Bold
Date: 2023-08-28xx
Style Definition: Heading 5: Font: Bold
Imaging materials — Reflection colour photographic prints — Method for testing humidi
Style Definition: Heading 6: Font: Bold
ty fastness
Style Definition: ANNEX
Matériaux pour l'image — Tirages photographiques en couleurs par réflexion — Méthode d'essai
Style Definition: AMEND Terms Heading: Font: Bold
de la solidité à l'humidité
Style Definition: AMEND Heading 1 Unnumbered:
Font: Bold

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ISO/FDIS 18946:2023(E)
© ISO 2023
Commented [eXtyles1]: The reference is to a withdrawn
standard which has been replaced

All rights reserved. Unless otherwise specified, or required in the context of its implementation,
ISO 20344, Personal protective equipment — Test methods
no part of this publication may be reproduced or utilized otherwise in any form or by any means,
for footwear
electronic or mechanical, including photocopying, or posting on the internet or an intranet,
Formatted: Pattern: Clear
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.
Formatted: Pattern: Clear
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 18946:2023(E)
Contents
Foreword . iv
Introduction. v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
5 Outline of test procedure . 3
6 Sample preparation . 4
6.1 General . 4
6.2 Test target . 4
6.3 Printer driver setting . 5
6.4 Printing conditions . 6
6.5 Sample conditioning . 6
7 Humidity exposure . 6
7.1 Equipment and calibration . 6
7.2 Test environment control . 6
7.3 Method A — Fixed humidity condition . 7
7.4 Method B — Multiple humidity conditions . 7
8 Colorimetric measurement . 7
9 Data analysis .
...