BS ISO 12647-1-2013 Graphic technology Process control for the production of half-tone colour separations proof and production prints Parameters and measurement methods《图形技术 半色调颜色分.pdf

1、BSI Standards PublicationBS ISO 12647-1:2013Graphic technology Processcontrol for the production ofhalf-tone colour separations,proof and production printsPart 1: Parameters and measurementmethodsCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not f

2、or ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 12647-1:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 12647-1:2013.It supersedes BS ISO 12647-1:2004 which is withdrawn.The UK participation in its preparation was entru

3、sted 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. Users are responsible for its correctapplication. The British

4、 Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 76599 5ICS 37.100.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2

5、014.Amendments issued since publicationDate Text affectedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 12647-1:2013 ISO 2013Graphic technology Process contro

6、l for the production of half-tone colour separations, proof and production prints Part 1: Parameters and measurement methodsTechnologie graphique Matrise de procd pour la production des sparations de couleur en ton tram, des preuves et des tirages en production Partie 1: Paramtres et mthodes de mesu

7、reINTERNATIONAL STANDARDISO12647-1Third edition2013-12-15Reference numberISO 12647-1:2013(E)Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 12647-1:2013ISO 126

8、47-1:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All 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 photocopying, or posting on the intern

9、et 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 officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso

10、.orgPublished in SwitzerlandCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 12647-1:2013ISO 12647-1:2013(E) ISO 2013 All rights reserved iiiContents PageForewo

11、rd ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Requirements 84.1 General . 84.2 Data files and printing formes . 84.3 Proof or production print 95 Measurement methods .115.1 Computation of CIELAB colour coordinates and CIELAB colour differences 115.2 Control strip

12、 . 115.3 Screen angles of prints 125.4 Gloss 125.5 Apparent ink trap 135.6 Doubling and slur 135.7 Density or relative density of a process colour solid 135.8 Variation of the coloration on a single print .14Annex A (informative) Reporting 16Bibliography .17Copyright British Standards Institution Pr

13、ovided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 12647-1:2013ISO 12647-1:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (I

14、SO 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, gov

15、ernmental 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 mainte

16、nance 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).Attent

17、ion 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

18、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

19、 assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 130, Graphic technology.This third edition cancels and replaces the

20、 second edition (ISO 12647-1:2004), which has been revised by an update relating to the extensive usage of digital data in the printing and publishing world and a general clean-up towards an updated and stringent structure of the multi-part standard.ISO 12647 consists of the following parts, under t

21、he general title Graphic technology Process control for the production of half-tone colour separations, proof and production prints: Part 1: Parameters and measurement methods Part 2: Offset lithographic processes Part 3: Coldset offset lithography on newsprint Part 4: Publication gravure printing P

22、art 5: Screen printing Part 6: Flexographic printing Part 7: Proofing processes working directly from digital data Part 8: Validation print processes working directly from digital dataiv ISO 2013 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Unco

23、ntrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 12647-1:2013ISO 12647-1:2013(E)IntroductionWhen producing a colour reproduction, it is important that the people responsible for colour separation, proofing and printing operations have previously

24、 agreed on a minimum set of parameters that uniquely define the visual characteristics and other technical properties of the planned print product. Such an agreement enables the correct production of suitable colour separated data (without recourse to “trial-and-error”) and subsequent production of

25、proof prints from these data. The purpose of digital proof prints or press proof prints is to simulate the visual characteristics of the finished print product as closely as possible. It should be further noticed that this International Standard provides aims for printing using typical printing equi

26、pment and tools for quality control under the given economical constraints.It is the purpose of this part of ISO 12647 to list and explain the minimum set of primary process parameters required for process control to uniquely define the visual characteristics and related technical properties for the

27、 contract or press proof print as well as the production print. Other parts of ISO 12647 define either specific values for these parameters that are appropriate for specific processes (such as lithography) or define matching tolerances based on a given characterization data set. Given an established

28、 fully characterized printing condition by means of a set of characterization data, ISO 12647-7 and ISO 12647-8 specify requirements for systems in order to produce a “Contract proof” or, at a less stringent level, a “Validation print”.For some processes certain parameters are more significant than

29、others and may be specified as mandatory while the remainder are optional. However, in this part of ISO 12647, all parameters are treated equally.Primary process parameters are defined here as having a direct bearing on the visual characteristics of the image. They depend on the pertinent printing p

30、rocess but typically comprise printing sequence, press, ink, the print substrate and the screening. Those parameters constitute a printing condition to be defined in the pertinent parts of this International Standard. Such a printing condition is characterized by means of associated colorimetric and

31、/or densitometric process control aims. This is usually facilitated by means of defined solid colorations (to be named here colorant descriptions) and tone response curves.A printing condition is therefore understood to refer to a set of primary process parameters and the resulting colorimetric and/

32、or densitometric characterization.Subordinate, formerly secondary, parameters are defined as those which may influence the image indirectly by changing the values of primary parameters. They are highly dependent on the relevant printing process. In case of offset printing typical influencing factors

33、 are speed, printing additives, blankets, and fountain solution types. Depending on the given combination of materials and machine setup, a press adjustment (also known as process calibration) might be necessary to achieve the colorimetric and/or densitometric process control aims of the printing co

34、ndition of interest. This is typically accomplished using one-dimensional curve adjustments.Even under standard conditions, i.e. a suitable data preparation that accounts for the different strengths and weaknesses of the individual printing conditions and a reproducible printing process that has min

35、imal variations both within a run and between runs, it is practically not possible to hit a given set of primary parameters exactly. Differences due to typical production tolerances or due to differences in press, ink or substrate are generally unavoidable and have to be accepted by the print buyer.

36、 On the other hand, for global data exchange and colour separation purposes, an elaborate colorimetric characterization of every printing condition is required. Such data can be extracted from one or more prints that were produced under carefully and tightly controlled (nearly laboratory) conditions

37、 followed by mathematical correction procedures that are specifically designed to compensate for the differences remaining, i.e. zero tolerance toward given aim values. Such a fully characterized printing condition is suitable to evaluate and examine the colour gamut and should not be confused with

38、the colorant description that only comprises colorimetric definitions of the solids (typically CMYK; MY, CY, CM and CMY).By facilitating modern methods of electronic data manipulation it is possible, as described, to establish characterization data sets that fully reflect the aim values of a given s

39、et of primary process parameters. This allows both process control aims for printing operations (to be connected with a general printing condition) as well as colorimetric aims for digital proofing processes in the prepress arena to be in concert. ISO 2013 All rights reserved vCopyright British Stan

40、dards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 12647-1:2013ISO 12647-1:2013(E)Given a fully characterized printing condition and a definition of the achromatic perception (see 3.11

41、) it is possible to extract the exact grey condition, namely the colorimetric values needed (under specified viewing conditions). Such a grey condition (not to be confused with the grey balance that represents the needed tone values for cyan, magenta and yellow in order to achieve a neutral grey) mi

42、ght be used both for process calibration and monitoring the printing process.The general principles of this International Standard can be easily extended to printing conditions not defined in ISO 12647, e.g. printing with high pigmented inks or the usage of substrates not fully addressed by the rele

43、vant parts of ISO 12647.In order to facilitate communication between prepress, print buyer and printer, it is recommended to use a press proof or digital print compliant to ISO 12647-7 (“Contract proof”) or ISO 12647-8 (“Validation print”). The proof print reliably shows the quality of the prepress

44、work and serves as the colour reference for the production run and, if necessary, may be used in case of a dispute between the print buyer and printer.vi ISO 2013 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo re

45、production or networking permitted without license from IHS-,-,-BS ISO 12647-1:2013INTERNATIONAL STANDARD ISO 12647-1:2013(E)Graphic technology Process control for the production of half-tone colour separations, proof and production prints Part 1: Parameters and measurement methods1 ScopeThis part o

46、f ISO 12647 defines and explains the minimum set of primary process control parameters required to uniquely specify the visual characteristics and related technical properties of process-specific production prints and process-independent simulations of fully characterized printing conditions.2 Norma

47、tive 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 cited applies. For undated references, the latest edition of the referenced document (including any amendments) a

48、pplies.ISO 5-3, Photography and graphic technology Density measurements Part 3: Spectral conditionsISO 5-4, Photography and graphic technology Density measurements Part 4: Geometric conditions for reflection densityISO 13655, Graphic technology Spectral measurement and colorimetric computation for g

49、raphic arts images3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.NOTE For quantities, the preferred unit is given together with the definition. By definition, the unit of the so-called dimensionless quantities is 1.3.1achromatic colourperceived colou