ISO 12647-8:2021
Graphic technology — Process control for the production of half-tone colour separations, proof and production prints — Part 8: Validation print processes working directly from digital data
This document specifies requirements that can be used for determining the conformance of systems that produce a hard-copy validation print, directly from digital data, which is intended to simulate the expected appearance of material printed in accordance with a characterized printing condition.
It is not intended for use in determining the conformance of production printing systems (digital or conventional) since many aspects of production printing are not covered in this document.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 Data requirements for validation print systems
4.2 Validation print
4.2.1 Validation print substrate qualification
4.2.2 Coloration of printed parts
4.2.3 Short- and long-term repeatability
4.2.4 Permanence
4.2.5 Ink set gloss
4.2.6 Tone value reproduction limits
4.2.7 Tonality assessment
4.2.8 Reproduction of vignettes
4.2.9 Image resolving power
4.2.10 Margin information
5 Test methods
5.1 System validation
5.2 Validation print control strip
5.3 Additional test objects
5.4 Uniformity measurement
5.5 Colour measurement
5.6 Measurement of gloss
5.7 Supplementary visual control element
Annex A (normative) Technical requirements for validation print conformity
Annex B (informative) Determination of print durability after stabilization
Annex C (normative) Surface gamut patches
Annex D (informative) Categorising fluorescence
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 Data requirements for validation print systems
4.2 Validation print
4.2.1 Validation print substrate qualification
4.2.2 Coloration of printed parts
4.2.3 Short- and long-term repeatability
4.2.4 Permanence
4.2.5 Ink set gloss
4.2.6 Tone value reproduction limits
4.2.7 Tonality assessment
4.2.8 Reproduction of vignettes
4.2.9 Image resolving power
4.2.10 Margin information
5 Test methods
5.1 System validation
5.2 Validation print control strip
5.3 Additional test objects
5.4 Uniformity measurement
5.5 Colour measurement
5.6 Measurement of gloss
5.7 Supplementary visual control element
Annex A (normative) Technical requirements for validation print conformity
Annex B (informative) Determination of print durability after stabilization
Annex C (normative) Surface gamut patches
Annex D (informative) Categorising fluorescence
Bibliography