ISO 19445:2016

Graphic technology — Metadata for graphic arts workflow — XMP metadata for image and document proofing

ISO 19445:2016 specifies the set of metadata to be used to communicate the approval status, proof preparation and viewing parameters for images and documents that are used in the graphic arts print production workflow.

Technologie graphique — Métadonnées pour le flux de travail des arts graphiques — Métadonnées XMP pour la relecture de document et d'image

General Information

• Status: Withdrawn
• Publication Date: 26-May-2016
• ICS: 35.240.30 - IT applications in information, documentation and publishing
• Technical Committee: ISO/TC 130 - Graphic technology
• Drafting Committee: ISO/TC 130/WG 2 - Prepress data exchange
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 01-Jun-2022

Relations

• Revised: ISO 19445:2022 - Graphic technology — Metadata for graphic arts workflow — XMP metadata for image and document proofing
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 19445
First edition
2016-06-01
Graphic technology — Metadata
for graphic arts workflow — XMP
metadata for image and document
proofing
Technologie graphique — Métadonnées pour le flux de travail des
arts graphiques — Métadonnées XMP pour la relecture de document
et d’image
Reference number
ISO 19445:2016(E)
©
ISO 2016

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ISO 19445:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
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www.iso.org
ii © ISO 2016 – All rights reserved

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ISO 19445:2016(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 2
4 Requirements . 2
4.1 General . 2
4.2 Namespace. 2
4.3 XMP packet structure . 2
4.4 ImageApprovals property . 2
4.5 ProofingApprovals property . 3
4.6 ProofPrinter record . 4
4.7 ProofingDevice record . 5
5 Soft-Proofing PDF specifications . 6
5.1 Encoding PDF/X output conditions . 6
5.2 Using digital signatures . 6
Annex A (informative) XMP examples . 7
Bibliography . 9
© ISO 2016 – All rights reserved iii

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ISO 19445:2016(E)

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
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 130, Graphic technology.
iv © ISO 2016 – All rights reserved

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ISO 19445:2016(E)

Introduction
This International Standard describes a set of metadata that can be used to communicate the approval
status for images or documents that are used for graphic arts print production workflow.
It is based on the soft-proofing ticket defined by the Ghent PDF Workgroup which uses XMP. This
specification includes the specification of the Ghent PDF Workgroup soft-proofing ticket and extends it
to include metadata required for the image preparation stage of the workflow.
The intent of this metadata is to track who has approved the image or document, how the proof was
prepared, and what the viewing conditions were during the approval. To achieve this, the approver is
identified along with the document output conditions, the software used for the approval and details of
the device configuration.
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INTERNATIONAL STANDARD ISO 19445:2016(E)
Graphic technology — Metadata for graphic arts workflow
— XMP metadata for image and document proofing
1 Scope
This International Standard specifies the set of metadata to be used to communicate the approval
status, proof preparation and viewing parameters for images and documents that are used in the
graphic arts print production workflow.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 15076-1, Image technology colour management — Architecture, profile format and data structure —
Part 1: Based on ICC.1:2010
ISO 15930 (all parts), Graphic technology — Prepress digital data exchange using PDF
ISO 16684-1, Graphic technology — Extensible metadata platform (XMP) specification — Part 1: Data
model, serialization, and core properties
ISO 32000-1, Document management — Portable document format — Part 1: PDF 1.7
3 Terms, definitions and abbreviated terms
For the purposes of this document, the following terms, definitions and abbreviated terms apply.
3.1 Terms and definitions
3.1.1
ICC CMYK characterization data registry
central registry for CMYK print characterization data maintained by the ICC
3.1.2
ICC profile
set of colorimetric transforms prepared in accordance with ICC.1 or ISO 15076-1
3.1.3
PDF/X
file format for reliable exchange of print-ready data defined in ISO 15930
3.1.4
URI
Uniform Resource Identifier as defined in IETF RFC 3986
3.1.5
XMP
eXtensible Metadata Platform
standard format for the creation, processing, and interchange of metadata as defined by ISO 16684-1
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ISO 19445:2016(E)

3.2 Abbreviated terms
GWG Ghent PDF Workgroup (see www.gwg.org)
ICC International Color Consortium (see www.color.org)
URI Uniform Resource Identifier
XMP eXtensible Metadata Platform
4 Requirements
4.1 General
XMP shall be used to store information about the image and document preparation and approval and
shall conform to the requirements of ISO 16684-1 and additional requirements as defined by this
International Standard.
This metadata shall be added, as described in ISO 16684-1, as an XMP packet to the image or document
to which it refers.
4.2 Namespace
The namespace URI for XMP properties and fields defined in this International Standard shall be
“http://gwg.org/spt/xmlns/”.
The preferred namespace prefix is spt.
4.3 XMP packet structure
An XMP packet conforming to this International Standard shall include either the ImageApprovals
property or the ProofingApprovals property but not both. An XMP packet conforming to this
International Standard may contain other XMP properties.
4.4 ImageApprovals property
The ImageApprovals property shall be a non-empty ordered array of ImageApproval records as
specified in Table 1.
The ImageApprovals record shall contain entries for all fields marked as Required and, where
appropriate, should contain entries for those fields marked as Optional.
NOTE There is currently no defined purpose to the ImageApprovals order. An ordered array is used for
compatibility with earlier GWG specifications.
The fields of the ImageApproval record are shown in Table 1.
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ISO 19445:2016(E)

Table 1 — ImageApproval record
Name Type Field content
PrintingConditionIdentifier open Choice of Required. The reference name for the printing
Text condition that was used when the image was
approved.
This is an open choice - preferred options are
those indicated in the ICC CMYK characterization
data registry (see www.color.org).
PrintingConditionDescription Text Required. A non-empty human readable string
that describes the printing condition.
PrintingConditionProfileID Text Required. The ICC profile ID of the printing
condition profile used when the image was
approved. Note that if the ICC profile ID was not
set (i.e. is zero) the profile ID shall be calculated
as described in ISO 15076-1 (ICC profile format
specification).
The 16-byte ICC profile ID shall be expressed as
a hexadecimal text string with dash separators
between every 8 characters (4 bytes) making a
total string length of 35 characters.
RenderingIntent closed Choice of Required. The rendering intent used when
Text approving the image; closed choice of Absolute-
Colorimetric, RelativeColorimetric, Perceptual or
Saturation.
NOTE If using BlackPointCompensation as de-
fined in ISO 18619, then RenderingIntent cannot
be AbsoluteColorimetric.
BlackPointCompensation Boolean Required. Indicates whether BlackPoint Compen-
sation was used when the image was approved.
BlackPoint Compensation should be performed as
described in ISO 18619.
ApproverName ProperName Required. A human readable name.
ApprovalDevice closed Choice of Required. Closed choice of Monitor or Printer.
Text
ApprovalStatus closed Choice of Required. The status of approval; closed choice of
Text Approved or Rejected.
ApprovalDate Date Required. The date and time of approval.
Required when hard copy proofing is performed.
ProofPrinters ordered array
One or more ProofPrinter records defined in 4.6
of ProofPrinter
describing the hard copy proof.
records
ProofingDevices ordered array of Required when soft proofing is performed. One
ProofingDevice or more ProofingDevice records defined in 4.7
records describing the proofing device(s).
4.5 ProofingApprovals property
The ProofingApprovals property shall be a non-empty ordered array of ProofingApproval records as
specified in Table 2.
The ProofingApprovals record shall contain entries for all fields marked as Required and, where appropriate,
should contain entries for those fields marked as Optional. When writing the ProofingApprovals record
entries for those fields indicated as Deprecated should not be used, fields marked in this way indicate past
usage and are provided in this International Standard for information only.
NOTE There is currently no defined purpo
...