ISO 17972-4:2018

Name: ISO 17972-4:2018 — Graphic technology — Colour data exchange format (CxF/X) — Part 4: Spot colour characterisation data (CxF/X-4)
SKU: ISO 17972-4:2018
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Graphic technology — Colour data exchange format (CxF/X) — Part 4: Spot colour characterisation data (CxF/X-4)

Название (английский):

ISO 17972-4:2018

Graphic technology — Colour data exchange format (CxF/X) — Part 4: Spot colour characterisation data (CxF/X-4)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 13
Дата публикации:: 19 января 2018 г.
Издание:: ISO IS 17972 edition 2 version 1
ICS:: 35.240.30

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Описание (английский):

ISO 17972-4:2018 defines an exchange format for spectral measurement data of inks to provide a means to characterise spot colour inks to allow reliable printing and proofing of products that have been designed using these inks. Only isotropic (paper-like) substrates are within the scope of this document, which is limited to application areas where the same ink and paper combination that has been characterised is used when printing. ISO 17972-4:2018 describes the use of a CustomResource element within the CxF framework to define a minimum and recommended set of data for exchange.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 17972-4:2018 - "Graphic technology - Colour data exchange format (CxF/X) - Part 4: Spot colour characterisation data (CxF/X-4)" defines a standardized exchange format for spectral measurement data of spot inks. It specifies how to describe the colour and opacity of spot colour inks (ink + substrate combinations) using the CxF framework so that spot inks can be reliably printed and proofed. The standard applies only to isotropic (paper‑like) substrates and to workflows where the same ink and paper combination characterised is used in production. ISO 17972-4 uses a CustomResource element within the CxF/CxF3 model to define minimum and recommended data for exchange, and supplies XML schema and example files for implementation.

Key Topics

Spot colour characterisation: communicates spectral data and opacity for individual spot inks rather than process ink combinations.

Conformance levels: three levels to match common workflows:

CxF/X-4 (Full Characterisation) - colour and opacity specified (includes measurements over substrate and black background).
CxF/X-4a (Single Background) - characterisation for inks printed on a single background.
CxF/X-4b (Single Patch) - characterisation for solid (100%) ink patches only.

Measurement chart requirements:

Patches at 0% and 100% must be printed on the unmarked substrate.
For CxF/X-4 and CxF/X-4a, include at least one intermediate tint (e.g., 50%) and a minimum of 11 patches total.
For full characterisation, a second set of patches with the same tint levels must be printed on a black region.
Tint levels are recorded as percentages (0–100).

Data structure and validation: leverages CxF3 Core plus a CxF/X-4 CustomResource. Annexes provide XML schema (CxF3_Core.xsd, ISO17972-4_schema.xsd) and examples; Annex C explains core validation.

Scope limitations: metallic, pearlescent, or fluorescent inks may require extra fields beyond this part; ink production/process detail is outside scope but can be added via extensions.

Applications

Brand owners and print buyers to ensure accurate reproduction of spot colours.

Ink manufacturers to publish spectral and opacity data for spot inks.

Printers and proofing houses to produce reliable proofs and predict printed appearance.

Prepress and color management specialists, RIP and proofing software vendors, and instrument manufacturers implementing measurement exchange. Use cases include spot-ink proofing, cross-vendor colour communication, and automated RIP workflows that require spectral characterisation.

Related Standards

ISO 17972-1 (CxF3 Core / relationship to CxF3)

ISO 17972-2 and ISO 17972-3 (other CxF/X CustomResource usages)

ISO 13655 (measurement practice guidance referenced)

Keywords: ISO 17972-4:2018, CxF/X-4, spot colour characterisation, colour data exchange, spectral measurement, spot inks, CustomResource, CxF3, proofing, printing.

ISO 17972-4:2018

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Технические детали

BS ISO 17972-4:2018

Graphic technology. Colour data exchange format (CxF/X). Spot colour characterisation data (CxF/X-4).

ISO 17972-3:2017

Graphic technology — Colour data exchange format (CxF/X) — Part 3: Output target data (CxF/X-3)

BS ISO 17972-1:2015

Graphic technology. Colour data exchange format. Relationship to CxF3 (CxF/X).

BS ISO 17972-2:2016

Graphic technology. Colour data exchange format (CxF/X). Scanner target data (CxF/X-2).

BS ISO 13655:2017

Graphic technology. Spectral measurement and colorimetric computation for graphic arts images.