ISO 18935:2025 画像材料 — カラー画像 — 印刷されたカラー画像の耐水性の測定 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 42, Photography.

This fourth edition cancels and replaces the third edition (ISO 18935:2018), of which it constitutes a minor revision.

The main changes are as follows:

• new informative annex on “Water emergency scenarios with inkjet prints”.

Introduction

Water resistance is not an important consideration in the normal storage of colour prints. However, in a disaster situation, such as floods, earthquakes or water main breaks, this property can be of critical importance if the print is to be salvaged. A wide variety of materials are used for digital colour prints and the colorants used in some digital prints are water soluble. The degree of their water resistance varies depending upon the colorants used and if the print has a water-resistant overcoat. In addition, the paper or other substrate may be of equal importance. The same colorants may exhibit very good water resistance on one substrate but can be completely washed off from a different substrate. Even print systems that use water-insoluble colorants may be damaged by water exposure if the substrate is not also water resistant. This document provides a standardized method to evaluate the qualitative water resistance of colour prints.

1 Scope

This document specifies tests to determine the relative water resistance of printed colour images. This document is applicable to both digital and analogue prints.

2 Normative references

There are no normative references in this document.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography