1、BSI Standards PublicationPD ISO/PAS 15339-2:2015Graphic technology Printingfrom digital data acrossmultiple technologiesPart 2: Characterized reference printingconditions, CRPC1CRPC7PD ISO/PAS 15339-2:2015 PUBLISHED DOCUMENTNational forewordThis Published Document is the UK implementation of ISO/PAS
2、15339-2:2015.The UK participation in its preparation was entrusted to TechnicalCommittee PAI/43, Graphic technology.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract.
3、 Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 90004 4ICS 35.240.30; 37.100.99Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under t
4、he authority of theStandards Policy and Strategy Committee on 30 September 2015.Amendments issued since publicationDate Text affectedPD ISO/PAS 15339-2:2015 ISO 2015Graphic technology Printing from digital data across multiple technologies Part 2: Characterized reference printing conditions, CRPC1CR
5、PC7Technologie graphique Impression partir de donnes numriques via des technologies multiples Partie 2: Conditions dimpression de rfrence caractrises, CRPC1CRPC7PUBLICLY AVAILABLE SPECIFICATIONISO/PAS15339-2First edition2015-08-15Reference numberISO/PAS 15339-2:2015(E)PD ISO/PAS 15339-2:2015ISO/PAS
6、15339-2:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopy
7、ing, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01
8、11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgPD ISO/PAS 15339-2:2015ISO/PAS 15339-2:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Requirements 15 Data files 5Annex A (normative) Tone value increase 6Bibliography 9 ISO 2015 All rights reserved iii
9、Contents PagePD ISO/PAS 15339-2:2015ISO/PAS 15339-2:2015(E)ForewordISO (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 committe
10、es. 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 Inte
11、rnational 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 dif
12、ferent 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 sha
13、ll 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 i
14、s 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 ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT)
15、 see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 130, Graphic technology.ISO/PAS 15339 consists of the following parts, under the general title Graphic technology Printing from digital data across multiple technologies: Part 1: Princip
16、les Publicly Available Specification Part 2: Characterized reference printing conditions, CRPC1CRPC7 Publicly Available Specificationiv ISO 2015 All rights reservedPD ISO/PAS 15339-2:2015ISO/PAS 15339-2:2015(E)IntroductionISO/PAS 15339 is based on the premise that in the printing and publishing indu
17、stries, electronic data are the intermediary for content storage and exchange throughout production including copy preparation, job assembly, proofing, and process printing. It further assumes that data preparation can be largely process-independent and that the choice of the printing process or pro
18、cesses to be used for final production will be based primarily on run-length requirements and the substrates to be used. There are various tools in place to both define the relationship of digital data to printed colour for specific instances of printing and to manipulate data such that similar resu
19、lts can be obtained between and among different printing processes (see ISO/TS 10128). These specific instances of printing are typically described by colour characterization data, which is the relationship between CMYK input data and colour measured on the printed sheet. Where such a set of colour
20、characterization data are used as a reference it is referred to as a characterized reference printing condition (CRPC).ISO/PAS 15339-1 describes the principles involved in developing and working with CRPCs.This part of ISO/PAS 15339 defines a set of CRPCs associated with the initial publication of I
21、SO/PAS 15339. It is intended that if changes in, or additions to, these data sets are needed in the future, they will be documented in additional parts of ISO/PAS 15339 so that changes in the data sets are possible without losing traceability to earlier data sets.Not all printing processes that can
22、achieve the same colour gamut are subject to the same limitations. Offset, gravure, flexography, electrophotographic, ink-jet, etc. each have limitations that may have to be considered in the final data preparation. These typically include limitations of total ink coverage, and minimum and maximum p
23、rintable dot sizes. Should general guidance be needed, additional parts of ISO/PAS 15339 can be prepared to assist in the communication or standardization of the handling of such limitations. ISO 2015 All rights reserved vPD ISO/PAS 15339-2:2015PD ISO/PAS 15339-2:2015Graphic technology Printing from
24、 digital data across multiple technologies Part 2: Characterized reference printing conditions, CRPC1CRPC71 ScopeThis part of ISO/PAS 15339 specifies a limited number of characterized reference printing conditions that span the expected range of colour gamuts used for the production of printed mater
25、ials from digital data, regardless of the printing process used. Their use is described in ISO/PAS 15339-1.2 Normative referencesThe 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
26、 cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 12642-2, Graphic technology Input data for characterization of 4-colour process printing Part 2: Expanded data setISO 13655, Graphic technology Spectral measurement and colori
27、metric computation for graphic arts imagesISO/PAS 15339-1, Graphic technology Printing from digital data across multiple technologies Part 1: PrinciplesISO 28178, Graphic technology Exchange format for colour and process control data using XML or ASCII textCGATS TR015:2013, Graphic technology Method
28、ology for Establishing Printing Aims Based on a Shared Near-neutral Gray-scale3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO/PAS 15339-1 apply.4 RequirementsAs defined in ISO/PAS 15339-1, unless otherwise agreed between sender and receiver, the chara
29、cterized reference printing condition (CRPC) used for data preparation and data exchange shall be one of the data sets defined in this or subsequent parts of ISO/PAS 15339.The characterization data associated with the characterized reference printing conditions identified in this part of ISO/PAS 153
30、39 are presented as data files “ISO15339-CRPC1.txt” to “ISO15339-CRPC7.txt” (see Clause 5).PUBLICLY AVAILABLE SPECIFICATION ISO/PAS 15339-2:2015(E) ISO 2015 All rights reserved 1PD ISO/PAS 15339-2:2015ISO/PAS 15339-2:2015(E)Although a normative part of this International Standard, they may be freely
31、 used and distributed provided that the header of all distributed files indicates that they are part of ISO/PAS 15339.NOTE 1 When additional CRPCs are published in subsequent parts of ISO/PAS 15339, it is expected they will follow the same sequential naming scheme to avoid confusion, i.e. ISO15339-C
32、RPC8 would be the next named data set.The characterized reference printing conditions included in these data files have been selected to be near the middle of both the general class of printing that is expected to make use of each characterized reference printing condition and the colour of the subs
33、trates used. It is also expected that adjustments for substrate colour (see ISO/PAS 15339-1) will allow each characterized reference printing condition to meet a wide variety of needs and be independent of the actual printing process to be used.The tone reproduction curves used are based on the proc
34、edures defined in CGATS TR015 and are dependent on the reflectance of the substrate and of the black and 3-colour solids. The equations of CGATS TR015 provide the CIE Y tristimulus value corresponding to a particular cyan tone value of a near neutral scale.To provide a consistent relationship betwee
35、n the substrate corrected neutral scales of the various data sets created for this part of ISO/PAS 15339, the CMY triplets defined by Formula 1 were mapped to the substrate corrected neutral scale of all data sets:MY CC C= +0 7470 4 100 10 2 940 1042 53, , (1)In addition, the densitometric tone valu
36、e curves (computed according to A.3) for the three chromatic colourants were adjusted to have the same tone value increase (see Table A.1).The data given, for information only, in Tables 1 to 3 are taken from the CRPC data files and are shown in these tables and figures for information. The CIELAB a
37、*-b* projection of the characterization data of each of these characterized reference printing conditions is shown in Figure 1.All colorimetry is defined to be measurement condition M1, according to ISO 13655, with white backing.NOTE 2 To facilitate the use of the correction of colorimetric data for
38、 variations in substrate colour as described in ISO/PAS 15339-1, the header of each file contains the CIELAB values for both the substrate and a reference black point of the data set. The values for the substrate are ID 1 in each data set and as described in ISO/PAS 15339-1 the value in ID 1286 (the
39、 4-colour solid) is used as a reference black point.The substrate, single colour solids, and two-colour overprints that are the aims for the characterization data set are as shown in Table 1 and Table 2.The colorimetrically computed mid-tone TVI for each of the single colour scales of each of the ch
40、aracterized reference printing conditions is listed in Table 3 for information. More extensive TVI curves can be computed directly from the CRPC data if desired. Annex A shows the computed densitometric TVI and provides the computations used to derive both densitometric and colorimetric TVI.NOTE 3 A
41、 spreadsheet that will extract process control data from a CRPC data set, do substrate correction computations, and derive both densitometric and colorimetric TVI curves is available at http:/www.npes.org/Programs/StandardsWorkroom/ToolsBestPractices.aspx.Table 4 lists, for information only, typical
42、 use conditions, and a convenient name, for each of these characterized reference printing conditions. These characterized reference printing conditions have been selected to be near the middle of both the general class of printing that is expected to make use of each characterized reference printin
43、g condition and the colour of the substrates used. It is expected that adjustments for substrate colour (see ISO/PAS 15339-1) will allow each characterized reference printing condition to meet a wide variety of needs and be independent of the printing process to be used.2 ISO 2015 All rights reserve
44、dPD ISO/PAS 15339-2:2015ISO/PAS 15339-2:2015(E)Table 1 Characterized reference printing conditions Primary colour aimsCRPC Substrate colour Printed solid coloursCyan Magenta Yellow BlackL* a* b* L* a* b* L* a* b* L* a* b* L* a* b*1 85 1 5 59 24 26 56 48 0 80 2 60 37 1 42 87 0 3 57 28 34 52 58 2 82 2
45、 72 30 1 23 96 1 4 60 26 44 56 61 2 89 3 76 32 1 14 89 0 3 55 36 38 47 66 3 83 3 83 23 1 25 92 0 0 57 37 44 48 71 4 87 4 88 19 0 16 95 1 4 56 37 50 48 75 4 89 4 93 16 0 07 97 1 4 54 42 54 47 79 10 90 4 103 14 0 0Table 2 Characterized reference printing conditions Two-colour overprint aimsCRPCRed Gre
46、en BlueL* a* b* L* a* b* L* a* b*1 54 44 25 55 35 17 42 7 222 51 55 32 51 44 19 36 9 323 54 56 28 54 43 15 38 10 314 46 62 39 49 54 24 28 14 395 48 65 45 51 62 26 27 17 446 47 68 48 50 66 26 25 20 467 47 75 54 50 72 29 20 26 53Table 3 Colorimetric TVICRPCColorimetric TVI 50 % input TV %C M Y K1 24,3
47、 26,1 26,1 26,22 17, 3 19,2 19,2 22,03 16,8 19,1 19,0 22,14 15,9 19,1 19,0 22,15 15,0 16,0 16,0 19,16 13,4 16,0 16,0 19,07 11,6 16,1 16,1 19,1 ISO 2015 All rights reserved 3PD ISO/PAS 15339-2:2015ISO/PAS 15339-2:2015(E)Figure 1 Projection of the defined colourant descriptions given, for information
48、only, in Tables 1 and 2 onto the CIE a*b*-planeTable 4 Characterized reference printing conditions, typical usesCRPC Name Typical use1 Typical ColdsetNews Small gamut printing (newsprint)2 Typical HeatsetNews Moderate gamut printing on improved newsprint type paper3 Typical PremUncoated Utility prin
49、ting on a matt uncoated type paper4 Typical SuperCal General printing on super-calendared paper5 Typical PubCoated Typical publication printing6 Typical PremCoated Large gamut (typically commercial) printing7 Typical Extra Large Extra-large gamut printing processes4 ISO 2015 All rights reservedPD ISO/PAS 15339-2:2015ISO/PAS 15339-2:2015(E)5 Data filesThe following data files are a normative part of this part of ISO/PAS 15339: ISO15339-CRPC1.txt
