1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 19005-3:2012Document management Electronic document file format for long-term preservationPart 3: Use of ISO 32000-1 with support for embedded files (PDF/A-3)BS ISO 19005-
2、3:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 19005-3:2012. The UK participation in its preparation was entrusted to TechnicalCommittee IDT/1/2, Document Management Applications -Applications issues.A list of organizations represented on this committee
3、 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 75621 4 ICS 35.240.30
4、; 37.100.99 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 19005-3:2012 I
5、SO 2012Document management Electronic document file format for long-term preservation Part 3: Use of ISO 32000-1 with support for embedded files (PDF/A-3)Gestion de documents Format de fichier des documents lectroniques pour une conservation long terme Partie 3: Utilisation de lISO 32000-1 avec supp
6、ort de fichiers incorpors (PDF/A-3)INTERNATIONAL STANDARDISO 19005-3First edition2012-10-15Reference number ISO 19005-3:2012(E)BS ISO 19005-3:2012ISO 19005-3:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this pu
7、blication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Gene
8、va 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 19005-3:2012ISO 19005-3:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope .12 Normative references 13 Terms and definitions .24 Notation .35 Confor
9、mance levels 45.1 General . 45.2 Level A conformance 45.3 Level B conformance 55.4 Level U conformance 55.5 Conforming readers 56 Technical requirements 66.1 File structure 66.2 Graphics 86.3 Annotations. 176.4 Interactive forms 186.5 Action . 196.6 Metadata 196.7 Logical structure . 246.8 Embedded
10、files 266.9 Optional content . 276.10 Use of alternate presentations and transitions 286.11 Document requirements 28Annex A (normative) Method for determining transparency on a page 29Annex B (normative) Requirements for digital signatures in PDF/A .31Annex C (informative) Best practices for PDF/A .
11、32Annex D (informative) Incorporation of XFA data sets .34Annex E (normative) Associated files .35Bibliography .41BS ISO 19005-3:2012ISO 19005-3:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wor
12、k 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-governme
13、ntal, 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.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The mai
14、n task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Atte
15、ntion 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.ISO 19005-3 was prepared by Technical Committee ISO/TC 171, Document management applications, Subcommittee
16、 SC 2, Application issues, in cooperation with ISO/TC 130, Graphic technology, ISO/TC 42, Photography, and ISO/TC 46, Information and documentation, Subcommittee SC11, Archives/records management.ISO 19005 consists of the following parts, under the general title Document management Electronic docume
17、nt file format for long-term preservation: Part 1: Use of PDF 1.4 (PDF/A-1) Part 2: Use of ISO 32000-1 (PDF/A-2) Part 3: Use of ISO 32000-1 with support for embedded files (PDF/A-3)iv ISO 2012 All rights reservedBS ISO 19005-3:2012ISO 19005-3:2012(E)IntroductionPDF is a digital format for representi
18、ng page-based documents. PDF files can be created natively in PDF form, converted from other electronic formats or digitized from paper, microform, or other hard copy format. Businesses, governments, libraries, archives and other institutions and individuals around the world use PDF to represent con
19、siderable bodies of important information. Much of this information needs to be kept for substantial lengths of time; some needs to be kept permanently. These PDF files need to remain useable and accessible across multiple generations of technology. However, the inclusive, feature-rich nature of the
20、 format requires that constraints be placed on its use to make it suitable for the long-term preservation of electronic documents. The future use of, and access to, these objects depends upon maintaining their visual appearance as well as their higher-order properties, such as the logical organizati
21、on of pages, sections, and paragraphs, machine recoverable text stream in natural reading order, and a variety of administrative, preservation and descriptive metadata.This International Standard is created as a multi-part document, of which this is part 3. This allows future parts to be created wit
22、hout rendering this document or applications based on this document obsolete.The primary purpose of ISO 19005 is to define a file format based on PDF, known as PDF/A, which provides a mechanism for representing electronic documents in a manner that preserves their static visual appearance over time,
23、 independent of the tools and systems used for creating, storing or rendering the files.A secondary purpose of ISO 19005 is to define a framework for representing the logical structure and other semantic information of electronic documents within conforming files.Another purpose of ISO 19005 is to p
24、rovide a framework for recording the context and history of electronic documents in metadata within conforming files.This part of ISO 19005 adds a new goal (beyond that of ISO 19005-2) which is to enable PDF documents to serve as containers for other file formats, so that a single physical file can
25、contain not only the visual representation but also other representations including the original authored version, richer semantic formats, and others. This part of ISO 19005 does not address the long-term suitability of formats, that may be embedded, other than those compliant with any part of this
26、 International Standard.These goals are accomplished by identifying the set of PDF components that can be used, and restrictions on the form of their use, within conforming PDF/A files.By itself, PDF/A does not necessarily ensure that the visual appearance of the content accurately reflects any orig
27、inal source material used to create the conforming file, e.g. the process used to create a conforming file might substitute fonts, reflow text, downsample images or use lossy compression. Organizations that need to ensure that a conforming file is an accurate representation of original source materi
28、al might need to impose additional requirements on the processes that generate the conforming file beyond those imposed by this part of ISO 19005, such as those best practices in Annex C. In addition, it is important for those organizations to implement policies and practices regarding the inspectio
29、n of conforming files for correct visual appearance.PDF/A does not directly address the topic of authenticity either for the underlying content to be visually represented or the PDF/A file itself. Such authenticity is generally considered to be important for legal, regulatory and governance purposes
30、 and is beyond the scope of this part of ISO 19005.This part of ISO 19005 is one component of an organizations electronic archival environment for long-term retention of documents. Successful implementation of this part of ISO 19005 for archival purposes depends upon: the retention requirements of a
31、n organizations archival environment, records management policies and procedures as specified in ISO 15489-16; any additional conditions necessary to ensure the persistence of electronic documents and their characteristics over time, including, but not limited to, those defined by ISO 147215, ISO/TR
32、 158017, and ISO/TR 184928; ISO 2012 All rights reserved vBS ISO 19005-3:2012ISO 19005-3:2012(E) quality assurance processes necessary to verify conformance with applicable requirements and conditions, e.g. an inspection regime to verify the quality and integrity of converted source data.This part o
33、f ISO 19005 is intended to lead to the development of various applications that read, render, write and validate conforming files. Different applications will incorporate various capabilities to prepare, interpret and process conforming files based on needs as perceived by the suppliers of those app
34、lications. However, it is important to note that a conforming application needs to be able to read and process appropriately all files complying with a specified conformance level.This part of ISO 19005 extends the capabilities of ISO 19005-2. Just as with ISO 19005-2, it is based on PDF version 1.7
35、 (as defined in ISO 32000-1).This part of ISO 19005 (in conjunction with its normative references) provides sufficient information to interpret any conforming PDF/A-3 file.NPES and AIIM (accredited standards developing organizations) maintain an ongoing series of application notes for guiding develo
36、pers and users of this part of ISO 19005. These application notes are available at and . Both NPES and AIIM will also retain copies of the specific non-ISO normative references of this part of ISO 19005 which are publicly available electronic documents.vi ISO 2012 All rights reservedBS ISO 19005-3:2
37、012INTERNATIONAL STANDARD ISO 19005-3:2012(E)Document management Electronic document file format for long-term preservation Part 3: Use of ISO 32000-1 with support for embedded files (PDF/A-3)1 ScopeThis part of ISO 19005 specifies the use of the Portable Document Format (PDF) 1.7, as formalized in
38、ISO 32000-1, for preserving the static visual representation of page-based electronic documents over time in addition to allowing any type of other content to be included as an embedded file or attachment.This part of ISO 19005 is not applicable to: specific processes for converting paper or electro
39、nic documents to the PDF/A format; specific technical design, user interface, implementation, or operational details of rendering; specific physical methods of storing these documents such as media and storage conditions; required computer hardware and/or operating systems.2 Normative referencesThe
40、following referenced documents are indispensable for the application 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/IEC 646, Information technology ISO 7-bit coded ch
41、aracter set for information interchange1)ISO/IEC 10646, Information technology Universal Coded Character Set (UCS)2)ISO 15076-1, Image technology colour management Architecture, profile format and data structure Part 1: Based on ICC.1:2010ISO 15930-7:2010, Graphic technology Prepress digital data ex
42、change 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 1.6ISO 19005-1, Document management Electronic document file format for long-term preservation Part 1: Use of PDF 1.4 (PDF/A-1)ISO 19005-2,
43、 Document management Electronic document file format for long-term preservation Part 2:Use of ISO 32000-1 (PDF/A-2)ISO 32000-1, Document management Portable document format Part 1: PDF 1.7Extensible Markup Language (XML) 1.0 (Third Edition), W3C Recommendation, 4 February 2004. Available at 1) The c
44、haracter encoding defined in ISO/IEC 646 is equivalent to ANSI X3.4 (ASCII) and ECMA-6.2) The character code values defined in ISO/IEC 10646 are equivalent to those of Unicode. ISO 2012 All rights reserved 1BS ISO 19005-3:2012ISO 19005-3:2012(E)ICC.1:1998-09, File Format for Color Profiles, Internat
45、ional Color Consortium. Available at ICC.1:2001-12, File Format for Color Profiles (Version 4.0.0), International Color Consortium. Available at ICC.1:2003-09, File Format for Color Profiles, International Color Consortium. Available at RDF/XML Syntax Specification (Revised), W3C Recommendation, 10
46、February 2004. Available at XMP: Extensible Metadata Platform, (September 2005), Adobe Systems Incorporated. Available at Adobe Glyph List, 20 September 2002, Adobe Systems Incorporated. Available at Adobe Supplement to ISO 32000-1, BaseVersion 1.7, ExtensionLevel 5, Adobe Systems Incorporated. Avai
47、lable at RFC 2315, PKCS #7: Cryptographic Message Syntax Version 1.5RFC 3280, Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1conformance leveliden
48、tified set of restrictions and requirements to which files and readers are required to comply3.2electronic documentelectronic representation of a page-oriented aggregation of text, images and graphic data and metadata useful to identify and understand that data, that can be reproduced on paper or ot
49、her substrates, as well as rendered electronically on display devices, without significant loss of its information content3.3end-of-file markerfive character sequence %EOF marking the end of a PDF file3.4EOL markerend-of-line markerone or two character sequence marking the end of a line, consisting of a CARRIAGE RETURN character (0Dh) or a LINE FEED character (0Ah) or a CARRIAGE RETURN followed immediately by a LINE FEED3.5extension schemaconforming XMP schema that is not defined in the XMP Specificatio
