ISO 20616-1:2021

INTERNATIONAL ISO
STANDARD 20616-1
First edition
2021-09
Graphic technology — File format for
quality control and metadata —
Part 1:
Print requirements eXchange (PRX)
Technologie graphique — Format de fichier pour le contrôle qualité
et les métadonnées —
Partie 1: Print requirements eXchange (PRX)
Reference number
©
ISO 2021
© ISO 2021
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ii © ISO 2021 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Documentation conventions . 2
5 Requirements . 3
5.1 General . 3
5.2 Extensibility . 3
5.2.1 General. 3
5.2.2 TagCollection . 3
5.2.3 CustomResources . 3
5.3 Employing CxF . 3
5.4 PRX quality specification . 4
5.4.1 Overview . 4
5.4.2 PRX element . 4
5.4.3 PRXInfo element . . 4
5.4.4 BuyerInfo element . 5
5.4.5 EvaluationInfo element . 5
5.4.6 PercentAcceptableScores element . 5
5.4.7 GradingInfo element . 6
5.4.8 GradingScale element . 6
5.4.9 Grade element . 6
5.4.10 ValueRange element. 6
5.4.11 ZeroBaseline element . 7
5.4.12 BasisOfCalculation element . 7
5.4.13 MinimumAcceptableRank element . 8
5.4.14 DesiredRank element . . . 8
5.4.15 QualitySpecification element . 8
5.4.16 CustomerJob element . 8
5.4.17 CustomerItem element . 9
5.4.18 ItemDescription element . 9
5.4.19 InkGuidelines element .10
5.4.20 QualityGoals element .10
5.4.21 ComplianceGoal element .10
5.4.22 CalculationVariable element .11
5.4.23 GradeWeightingFactor element .11
5.4.24 ScoringInfo element .11
5.4.25 ScoreWeightingFactor element .11
5.4.26 ParameterName element .11
5.4.27 CustomerItemIdLink element .11
5.4.28 SamplingPosition element .11
5.4.29 SamplingPositionImageIdLink element.11
5.4.30 SamplingPositionMatrix element .12
5.4.31 Color element .12
5.4.32 Registration element .13
5.4.33 Defects element.14
5.4.34 Barcode element .14
5.4.35 CxFReferenceData element .15
5.4.36 SamplingPositionImageData element .15
5.4.37 PositionLocationImage element .15
5.4.38 TagCollection element .15
5.4.39 CustomResources element .15
5.4.40 PRX simple types .15
Annex A (normative) ISO 20616-1 XML schema .24
Annex B (informative) PRX principles and concepts .25
Annex C (informative) Samples .27
Bibliography .30
iv © ISO 2021 – All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 130, Graphic technology.
A list of all parts in the ISO 20616 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
Introduction
The ISO 20616 series defines standard XML schemas designed to enable the digital exchange of print
quality data and metadata between trading partners within the graphic arts supply chain. In the
past, a number of different non-standard data formats have been used to communicate print quality
metrics. It is a general observation that many of these existing non-standard data formats describe
similar types of information. Existing standard data formats cover either too much or too little scope
to address industry requirements. Hence, there is an industry need for a single, standard, concis
...