1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 15930-8:2010Graphic technology Prepressdigital data exchange usingPDFPart 8: Partial exchange of printing datausing PDF 1.6 (PDF/X-5)Incorporating corrigendum September 20
2、11 BS ISO 15930-8:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 15930-8:2010,incorporating corrigendum September 2011. It supersedesThe UK participation in its preparation was entrusted to TechnicalCommittee PAI/43, Graphic technology.A list of organizat
3、ions represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 76262 8ICS 35.240.30; 37.100.99Compliance with a British Stan
4、dard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2010Amendments/corrigenda issued since publicationDate Text affected30 November 2011 Implementation of ISO corrigendumSeptember 2011BS
5、ISO 15930-8:2008 which is withdrawn.The start and finish of text introduced or altered by corrigendumis indicated in the text by tags. Text altered by ISO corrigendumSeptember 2011 is indicated in the text by . Reference numberISO 15930-8:2010(E)ISO 2010INTERNATIONAL STANDARD ISO15930-8Second editio
6、n2010-07-15Graphic technology Prepress digital data exchange using PDF Part 8: Partial exchange of printing data using PDF 1.6 (PDF/X-5) Technologie graphique change de donnes numriques de primpression utilisant le PDF Partie 8: change partiel de donnes dimpression utilisant le PDF 1.6 (PDF/X-5) PDF
7、 disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, par
8、ties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative
9、 to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT
10、 PROTECTED DOCUMENT ISO 2010 All rights reserved. Unless otherwise specified, no part of this publication 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 I
11、SOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii BS ISO 15930-8:2010 ISO 15930-8:2010 (E) ISO 2011 iiiContents Page Foreword iv Intr
12、oduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Notations 5 5 PDF/X-5 conforming files and equipment.5 6 Technical requirements 6 6.1 General .6 6.2 PDF/X-5 file identification .6 7 PDF/X-5n conforming files prepared for n-colorant printing conditions.7 7.1 General .7 7.2 Ou
13、tput intent 7 7.3 Source colour spaces and transparency8 8 PDF/X-5g conforming external graphical content8 8.1 General .8 8.2 Architecture .8 8.3 Identification of target documents 9 8.4 Selection of target documents.9 8.5 Rendering of external documents .10 8.6 Trapping .10 8.7 Use of optional cont
14、ent.10 9 PDF/X-5pg conforming external ICC profiles and external graphical content10 Annex A (informative) PDF feature summary.11 Bibliography14 BS ISO 15930-8:2010 ISO 15930-8:2010 (E) ISO 2011 iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of nationa
15、l 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. Internation
16、al 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. International Standards are drafted in accordance with the rules
17、 given in the ISO/IEC Directives, Part 2. The main 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 le
18、ast 75 % of the member bodies casting a vote. 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. ISO 15930-8 was prepared by Technical Committee ISO/TC
19、130, Graphic technology. This second edition cancels and replaces the first edition (ISO 15930-8:2008), of which it constitutes a minor revision to incorporate the following changes: correct issues with metadata and identification (8.3 and 8.4); fix some minor issues in Annex A. ISO 15930 consists o
20、f the following parts, under the general title Graphic technology Prepress digital data exchange using PDF: Part 1: Complete exchange using CMYK data (PDF/X-1 and PDF/X-1a) Part 3: Complete exchange suitable for colour-managed workflows (PDF/X-3) Part 4: Complete exchange of CMYK and spot colour pri
21、nting data using PDF 1.4 (PDF/X-1a) Part 5: Partial exchange of printing data using PDF 1.4 (PDF/X-2) Part 6: Complete exchange of printing data suitable for colour-managed workflows using PDF 1.4 (PDF/X-3) Part 7: Complete exchange of printing data (PDF/X-4) and partial exchange of printing data wi
22、th external profile reference (PDF/X-4p) using PDF 1.6 Part 8: Partial exchange of printing data using PDF 1.6 (PDF/X-5) BS ISO 15930-8:2010 ISO 15930-8:2010 (E) ISO 2011 vIntroduction ISO 15930 (all parts) defines methods for the exchange of digital data within the graphic arts industry and for the
23、 exchange of files between graphic arts establishments. It is a multi-part document where each part is intended to respond to different workflow requirements. These workflows differ in the degree of flexibility required. However, increasing flexibility can lead to the possibility of uncertainty or e
24、rror. The goal throughout the various parts of ISO 15930 has been to maintain the degree of flexibility required while minimizing the uncertainty. Many printed documents are assemblies of partial pages and/or pages created at different locations and by different organizations. The merging of these i
25、ndividual elements into the final printing form and the subsequent printing can take place at different locations. Some of these elements might also be routed to multiple sites for incorporation into other documents. Each of these elements is referred to in ISO 15930 as a compound entity. A variety
26、of data formats and structures are used for the creation of this type of material, but with two prevalent kinds of underlying data structures. These are vector-based data for the encoding of line art and textual information and raster-based data for the encoding of image information, including previ
27、ously rasterized line art and textual information. Both kinds of data structures are required along with page description information in an open electronic workflow. The exchange of raster-based data using the TIFF/IT file format is defined in ISO 12639. The subject of ISO 15930 is a format for the
28、exchange of object-based data where individual objects can be in either vector or raster data structures. The various parts of ISO 15930 define a number of conformance levels intended to address different requirements; all define data formats and their usage to permit the predictable dissemination o
29、f a compound entity to one or more locations. These goals are accomplished by defining a specific use of the publicly available Adobe Portable Document Format (PDF). In order to achieve a level of exchange that avoids any ambiguity in interpretation of the file, a limited set of PDF objects that are
30、 permitted to be used is identified and restrictions to the use, or form of use, of those objects, and/or keys within those objects are added. In some environments, the data exchange needs to be in a form ready for final print reproduction, by transfer of a single file. This file contains all the co
31、ntent information necessary to process and render the document, as intended by the sender, coded inside a single PDF file. No other files, neither external files nor internally embedded files, are required or permitted. This exchange requires no prior knowledge of the sending and receiving environme
32、nts and is sometimes referred to as “complete” or “blind” exchange. It is platform-independent and transport-independent. Whereas many production workflows benefit from the exchange of complete material, with all elements present, there are circumstances when this is not appropriate. In certain work
33、flows, some or all of the referenced elements might be more logically present at the receiving site, or might be exchanged at a different time. These include high-resolution contone-image files, line-art files, ICC profiles, etc. These exchanges will generally require prior agreement between sender
34、and receiver. In some environments the exchange has to be restricted to CMYK (and spot colour) data, whilst in others it is more appropriate to convey it as colour-managed, CMYK, gray, RGB, and/or spot colour, or to use alternative process colour models. Several new versions of the PDF specification
35、 have been issued since the publication of ISO 15930-1 in 2001. More recent parts of ISO 15930 expand on and extend earlier parts by reference to later versions of the PDF specification. BS ISO 15930-8:2010 ISO 15930-8:2010 (E) ISO 2011 vi Table 1 summarizes the conformance levels defined in the var
36、ious parts of ISO 15930. Table 1 PDF/X conformance levels Conformance level Part of ISO 15930 Complete exchange Colour-managed data permitted Print characterization spaces supported PDF version PDF/X-1:2001 1 Yes No CMYK 1.3 PDF/X-1a:2001 1 Yes No CMYK 1.3 PDF/X-1a:2003 4 Yes No CMYK 1.4 PDF/X-2:200
37、3 5 No Yes Gray, RGB, CMYK 1.4 PDF/X-3:2002 3 Yes Yes Gray, RGB, CMYK 1.3 PDF/X-3:2003 6 Yes Yes Gray, RGB, CMYK 1.4 PDF/X-4 7 Yes Yes Gray, RGB, CMYK 1.6 PDF/X-4p 7 No Yes Gray, RGB, CMYK 1.6 PDF/X-5g 8 No Yes Gray, RGB, CMYK 1.6 PDF/X-5n 8 No Yes n-colorant 1.6 PDF/X-5pg 8 No Yes Gray, RGB, CMYK 1
38、.6 This part of ISO 15930 complements the other parts by defining a data format and its usage to permit the predictable dissemination of a compound entity to one or more locations, as colour-managed data, CMYK data, and/or spot colour data, by transfer of a file with some elements not included, but
39、with provision for unique identification. An exchange identified by this part of ISO 15930 might require communication between sender and receiver to select the mechanism by which elements not included can be identified. This part of ISO 15930 specifies PDF/X-5 conformance levels, which can be seen
40、as expansions and extensions of the PDF/X-4 and PDF/X-4p conformance levels defined in ISO 15930-7, in that it allows the use of an n-colorant print characterization, and allows some data necessary for final printing to be supplied externally to the main file being exchanged, as follows. PDF/X-4 req
41、uires all raster and vector data to be imaged on the final print to be included within the single file being exchanged; PDF/X-5 allows such data to be held in external files. This allows the use of workflows similar to those using Open Prepress Interchange (OPI) comments in PostScript, or OPI object
42、s in baseline PDF. These can have value in reducing the demands on design applications and the computers that they are used on, by allowing designers to work with low-resolution versions of images. They also enable parallel processing of work on an image or other graphic, and the page onto which it
43、will be placed. In a publication or newsprint workflow, they allow advertising and editorial submissions to be composited together late in the workflow, without requiring that files submitted by third parties be amended in any way before the final prepress processes. PDF/X-4 is restricted to prepara
44、tion for a gray, RGB or CMYK print characterization. PDF/X-5 enables the use of n-colorant print characterizations, using colorant sets that differ from or expand on gray, RGB or CMYK. The technical mechanism by which this is achieved requires that the ICC profile for the print characterization be e
45、xternal to the exchanged file. In all cases, this part of ISO 15930 places restrictions on the external data, and requirements for metadata within the exchanged file that provide for an unambiguous determination as to whether the external data has been correctly associated with the PDF/X-5 file duri
46、ng processing after the exchange. These differences from PDF/X-4 provide benefit in a variety of different sets of circumstances. Three conformance levels are therefore defined in this part of ISO 15930, as follows. PDF/X-5g External graphical content. PDF/X-5n External output intent ICC profiles fo
47、r n-colorant print characterizations. BS ISO 15930-8:2010 ISO 15930-8:2010 (E) ISO 2011 vii PDF/X-5pg External graphical content and external output intent ICC profiles describing a characterized printing condition using a gray, RGB or CMYK process colour model. This conformance level makes use of m
48、echanisms defined in the PDF/X-4p conformance level specified in ISO 15930-7. No conformance level defining the use of n-colorant printing conditions in combination with external graphical content is defined. Thus, a file that requires external ICC profiles for use in the output intent, and external content data to be identified is a “PDF/X-5pg file”. A reader capable of processing a file that requires compositing with external
