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 dataIMPORTANT — This document contains colours which ar

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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 dataIMPORTANT — This document contains colours which are considered to be useful for the correct understanding of the document. Users should therefore consider printing this document using a colour printer.是国际标准化组织发布的ISO标准，适用于世界范围。

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标准文档类型为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 dataIMPORTANT — This document contains colours which are considered to be useful for the correct understanding of the document. Users should therefore consider printing this document using a colour printer.高清PDF版本（文字版），标准文档内可进行搜索，可以复制原文，可粘贴。

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INTERNATIONAL STANDARD 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

IMPORTANT — This document contains colours which are considered to be useful for the correct understanding of the document. Users should therefore consider printing this document using a colour printer.

1 Scope

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.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 187, Paper, board and pulps — Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples

ISO 2813, Paints and varnishes — Determination of gloss value at 20°, 60° and 85°

ISO 3664, Graphic technology and photography — Viewing conditions

ISO 82541‑ , Paper and board — Measurement of specular gloss — Part 1: 75 degree gloss with a converging beam, TAPPI method

ISO 12040, Graphic technology — Prints and printing inks — Assessment of light fastness using filtered xenon arc light

ISO 126401‑ , Graphic technology — Prepress digital data exchange — Part 1: CMYK standard colour image data (CMYK/SCID)

ISO 12642‑2 , Graphic technology — Input data for characterization of 4-colour process printing — Part 2: Expanded data set

ISO 126471‑ , Graphic technology — Process control for the production of half-tone colour separations, proof and production prints — Part 1: Parameters and measurement methods

ISO 13655:2016, Graphic technology — Spectral measurement and colorimetric computation for graphic arts images

ISO 15397:2014, Graphic technology — Communication of graphic paper properties

ISO 12647-8:2021

ISO 159301‑ , Graphic technology — Prepress digital data exchange — Use of PDF — Part 1: Complete exchange using CMYK data (PDF/X-1 and PDF/X-1a)

ISO 15930‑4, Graphic technology — Prepress digital data exchange using PDF — Part 4: Complete exchange of CMYK and spot colour printing data using PDF 1.4 (PDF/X-1a)

ISO 15930‑6, Graphic technology — Prepress digital data exchange using PDF — Part 6: Complete exchange of printing data suitable for colour-managed workflows using PDF 1.4 (PDF/X-3)

ISO 15930‑7 , Graphic technology — Prepress digital data exchange using PDF — Part 7: Complete exchange of printing data (PDF/X-4) and partial exchange of printing data with external profile reference (PDF/X-4p) using PDF 1.6

ISO 15930‑8 , Graphic technology — Prepress digital data exchange using PDF — Part 8: Partial exchange of printing data using PDF 1.6 (PDF/X-5)

ISO 15930‑9, Graphic technology — Prepress digital data exchange using PDF — Part 9: Complete exchange of printing data (PDF/X-6) and partial exchange of printing data with external profile reference (PDF/X-6p and PDF/X-6n) using PDF 2.0

ISO/TS 1862121‑ , Graphic technology — Image quality evaluation methods for printed matter — Part 21: Measurement of 1D distortions of macroscopic uniformity utilizing scanning spectrophotometers

3 Terms a nd definiti ons

For the purposes of this document, the terms and definitions given in ISO 126471‑ and the following apply.

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

— ISO Online browsing platform: available at https://www.iso.org/obp

— IEC Electropedia: available at http://www.electropedia.org/

3.1

validation print substrate

substrate used for validation print processes, usually characterized by its light fastness or permanence properties, with only essential requirements dictated by the printing process

3.2

print stabilization period

time after which the print is chemically and physically stable

Note 1 to entry: It is necessary that this property of the validation print system be specified by the manufacturer. It is most important that the print is stable with respect to colour changes.

3.3

validation print

print produced directly from digital data early in the production chain following this document, representative of the concept for the final product

Note 1 to entry: A validation print can have reduced accuracy compared to contract proof.

3.4

production substrate

substrate to be used for production printing, including a substrate originally intended for the validation printing press under test

Note 1 to entry: A production substrate can be a paper with an ink receiving layer or a paper optimized for electrophotographic printing.

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