1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g584-colour process printing Part 2: Expanded data setICS 35.240.30; 37.100.99Graphic technology Input
2、 data for characterization of BRITISH STANDARDBS ISO 12642-2:2006BS ISO 12642-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2007 BSI 2007ISBN 978 0 580 54638 9Amendments issued since publicationAmd. No. Date CommentsComplian
3、ce with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard is the UK implementation of ISO 12642-2:2006.The UK participation in its preparation was entrusted to Technical Committee PAI/43, Graphic technology.A list of organizations represented on
4、this committee 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.Reference numberISO 12642-2:2006(E)INTERNATIONAL STANDARD ISO12642-2First edition2006-12-15Graphic tec
5、hnology Input data for characterization of 4-colour process printing Part 2: Expanded data set Technologie graphique Donnes dentre pour caractrisation dimpression en quadrichromie Partie 2: Ensemble de donnes largies BS ISO 12642-2:2006ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Nor
6、mative references . 1 3 Terms and definitions. 1 4 Technical requirements . 2 4.1 Data set characteristics . 2 4.2 Data set definition. 2 4.3 Layouts for printing 3 4.4 Data set identification. 3 Annex A (informative) Default layouts and image files 24 Annex B (informative) Flesh tone data set. 28 B
7、ibliography . 29 BS ISO 12642-2:2006iv 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 bod
8、y 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 Electrote
9、chnical 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 main task of technical committees is to prepare International Standards. Draft International Standards adopted by
10、 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. ISO 12642-2 was prepared by Technical Committee ISO/TC 130, Graphic technology. ISO 12642 consists of the followi
11、ng parts, under the general title Graphic technology Input data for characterization of 4-colour process printing: Part 1: Initial data set Part 2: Expanded data set BS ISO 12642-2:2006vIntroduction The existing characterization data set defined in ISO 12642-1 has proven very effective for use in ch
12、aracterizing various printing processes. Two concerns have been raised with respect to the ISO 12642-1 data set. First, many of those developing characterization data for colour management systems feel that additional data points are needed to provide better sampling of the data space. The second co
13、ncern comes from the packaging industry which would like to see both more data points in general but also more data at the highlight end of the scale and in particular more 4-colour data with low levels of black. Several drafts of a data set optimized for package printing (referred to as IT8.7/4) ha
14、ve been prepared by ANSI Committee for Graphic Arts Technologies Standards (CGATS). In addition, the European Colour Initiative (ECI) took an early draft and combined parts of it with the ISO 12642-1 data set and developed a data set known as ECI 2002 that has 1 485 data set elements. ECI 2002 has s
15、ince been approved as DIN 16614:2004. The data set contained in this part of ISO 12642 adds a series of 4-colour overprints at the 10 % black level to the data set elements in the current ECI 2002 data set. It is believed that this combined data set can fill the general colour characterization needs
16、 of all segments of the industry. During development of this part of ISO 12642, concerns were raised by the Japanese delegates concerning adequate representation of flesh tones. While additional flesh tones were not included in the standard data set, a 112-element flesh tone data set has been includ
17、ed in Annex B. It is important to note that there will always be special applications where additional or special data will be needed because of the peculiarities of a process or critical colour needs in certain parts of the tone scale or colour space. There is no required layout or patch size defin
18、ed for the data set defined in this part of ISO 12642. Users are free to randomize the layout and/or “fit” it to the space available. However, the members of TC 130/WG 2 strongly believe that default layouts need to be defined so that electronic versions of the target can be made readily available.
19、This will facilitate the use of this new data set by both users and colour management vendors. Accordingly, two default layouts are described in Annex A, i.e. one optimized for visual inspection, and the other randomized with the goal of uniform ink loading in each colour across the target area to m
20、inimize interaction between patch areas. In addition, the reference files that are included in this part of ISO 12642 clearly identify the elements that represent the data set defined as ISO 12642-1:1996 (often referred to as IT8.7/3) and the data set defined in ECI 2002. These can both be easily ex
21、tracted from and/or related to the larger data set where appropriate. The International Organization for Standardization (ISO) draws attention to the fact that it is claimed that compliance with this document may involve the use of a patent (Japanese Patent No. 2554366) held by Konica Minolta. ISO t
22、akes no position concerning the evidence, validity and scope of this patent right. The holder of this patent right has assured ISO that he is willing to negotiate licences under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statemen
23、t of the holder of this patent right is registered with ISO. Information may be obtained from: Mr. Kazuo Kato Industrial Standard Group Intellectual Property Center Konica Minolta Technology Center, Inc. Tel. +81-42-589-8135 Fax +81-42-589-8088 e-mail: kazuo.kato.kkkonicaminolta.jp BS ISO 12642-2:20
24、06vi Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above. ISO shall not be held responsible for identifying any or all such patent rights. BS ISO 12642-2:20061Graphic technology Input data for characte
25、rization of 4-colour process printing Part 2: Expanded data set 1 Scope This part of ISO 12642 defines a data set of ink value combinations that are intended to be used to characterize 4-colour process printing. This data set is not optimized for any printing process or application area but is robus
26、t enough for all general applications. The needs of publication, commercial, and package printing with offset, gravure, flexography, and other printing processes have been considered. While it is primarily aimed at process colour printing with CMYK inks, it can also be used with any combination of t
27、hree chromatic coloured inks and a dark ink. It is an alternate to the ISO 12642-1 data set where more robust data is required. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For
28、undated references, the latest edition of the referenced document (including any amendments) applies. ISO 12642-1:1996, Graphic technology Input data for characterization of 4-colour process printing Part 1: Initial data set 3 Terms and definitions For the purposes of this document, the following te
29、rms and definitions apply. 3.1 data set total collection of independently identified ink value sets that are defined by this part of ISO 12642 NOTE The terms patch and target are deliberately avoided because they imply a physical object or layout. This part of ISO 12642 only defines the data values
30、which the user is free to arrange in any target layout that meets their needs using patches of any size compatible with their measuring equipment. 3.2 ink values digital value that represents the amount of a colourant required in a rendering process NOTE For the half-tone printing process this is eq
31、uivalent to the tone value/dot area of the half-tone film expressed as a percentage. 3.3 ink value set set of four ink values representing the amount of the four colours to be used in a process colour area BS ISO 12642-2:20062 4 Technical requirements 4.1 Data set characteristics In order to meet th
32、e colour characterization needs of both the printing industry in general and the package printing industry, this data set needs to contain ink value sets that will provide sufficient detail in the highlight and shadow areas when printed using gravure, offset, flexographic and metal-decorating printi
33、ng processes. In addition, this data set should be suitable for use with both traditional process colours as well as with three chromatic colours and a dark colour. During the various development steps that led to the target defined in this standard, several groups of ink value sets (e.g. tone scale
34、s, grey balance, etc.) were identified. Those that are contained within the data set of this part of ISO 12642 are summarized in Table 1. During evaluation of the requirements for this data set, a number of additional elements were considered. One group of these elements involved a regular array of
35、flesh tone data. While these flesh tone data were not selected for inclusion in the defined data set, they were felt to be important enough to be documented as Annex B. 4.2 Data set definition The groups of ink value sets of Table 1 have many individual sets of ink values that appear multiple times.
36、 Eliminating all duplicated sets would result in a composite data set of 1 588 ink value combinations. However, for any layouts that attempt to provide ease of visual inspection it is important to have symmetry within tone scales and within systematic 3-colour overprint arrays. This requires the pre
37、sence of 29 duplicate ink value sets. These are the C, M, and Y single-colour data sets with tone values of 10 %, 20 %, 30 %, 40 %, 70 %, 85 %, and 100 % and the black single-colour data sets with tone values of 10 %, 20 %, 40 %, 60 %, 80 % and 100 %. In addition, there are two additional data set c
38、ombinations assigned to paper to allow some flexibility in that area, particularly when the printing substrate is not traditional paper. This results in a total of 1 617 combinations. Table 1 Required groups of ink value sets Group Description 1 All combinations of 0 %, 10 %, 20 %, 30 %, 40 %, 55 %,
39、 70 %, 85 %, 100 % in C, M and Y 2 All combinations of 0 %, 10 %, 20 %, 40 %, 70 % in C, M and Y with 10 % black All single-colour and 2-colour overprints at 100 % in C, M and Y with 10 % black 3 All combinations of 0 %, 10 %, 20 %, 40 %, 70 %, 100 % in C, M and Y with 20 % black 4 All combinations
40、of 0 %, 20 %, 40 %, 70 %, 100 % in C, M and Y with 40 % black 5 All combinations of 0 %, 20 %, 40 %, 70 %, 100 % in C, M and Y with 60 % black 6 All 2-colour overprints at 40 % in C, M and Y with 70 % black All single colour and 2-colour overprints at 100 % in C, M and Y with 70 % black 7 All combin
41、ations of 0 %, 40 %, 70 %, 100 % in C, M and Y with 80 % black 8 All combinations of 0 %, 40 %, 100 % in C, M and Y with 100 % black 9 Near neutral combinations of C, M, Y as follows: 5 %, 3 %, 3 % with a black level of 0 % 10 %, 6 %, 6 % with black levels of 0 %, 10 %, 20 %, 40 %, 60 %, 80 %, 100 %
42、 20 %, 12 %, 12 % with black levels of 0 %, 10 %, 20 %, 40 %, 60 %, 80 %, 100 % 40 %, 27 %, 27 % with black levels of 0 %, 10 %, 20 %, 40 %, 60 %, 80 %, 100 % 50 %, 40 %, 40 % with a black level of 0 % 60 %, 45 %, 45 % with black levels of 0 %, 20 %, 40 %, 60 %, 80 %, 100 % 80 %, 65 %, 65 % with bla
43、ck levels of 0 %, 40 %, 60 %, 80 %, 100 % 100 %, 85 %, 85 % with black levels of 0 %, 60 %, 80 %, 100 % 10 All combinations of 0 %, and 3 % in C, M, Y and K 11 All combinations of 0 %, and 7 % in C, M, Y and K 12 All combinations of 0 %, 3 %, and 40 % in C, M, Y and K 13 Single-colour scales in C, M
44、, Y, and K with values of 100 %, 98 %, 95 %, 90 %, 85 %, 80 %, 75 %, 70 %, 60 %, 50 %, 40 %, 30 %, 25 %, 20 %, 15 %, 10 %, 7 %, 5 %, 3 %, 2 %, 0 % BS ISO 12642-2:20063Table 2, and the data file 12642-2_summary.csv accompanying this part of ISO 12642, lists the ID numbers and their associated CMYK in
45、k values that shall constitute this characterization data set. Within this listing ink value data sets numbers 1 to 1485 are taken directly from the ECI 2002 specification 1.NOTE 1 For convenience, separate ID numbers were assigned to the duplicated ink value sets noted above. Users are cautioned th
46、at, while the data in Table 2 may be included in application software and reproduced as part of reports generated by such applications, reproduction of these data separate from accompanying measurement or layout data is a violation of ISO copyright. NOTE 2 The 1 617 ink value data sets include all i
47、nk value combinations of the ECI data set (see Introduction) as well as all ink value combinations included in the original ISO 12642-1 data set, but not the duplicate ink value sets of the ISO 12642-1 data set. NOTE 3 DIN 16614:2004 (ECI 2002) does not contain all of the ink value sets of Group 2 a
48、nd it does not contain the near neutral combinations of 50 %, 40 %, 40 % with black. Table 3, and the data file 12642-1_vs_12642-2.csv, tabulates the relationship between the ink value sets used in ISO 12642-1 and those defined in this part of ISO 12642. Patch IDs 1 to 1485 of this data set have the
49、 same ink value combinations as the comparable patch IDs of the ECI 2002 (DIN 16614:2004) data set. 4.3 Layouts for printing The 1 617 ink value sets may be printed in any arrangement desired. For any specific arrangement, a table defining the relationship between row-column position and ID number shall be provided. Although there is no requirement that any particular arrangement of these data be used for printing characterization targets, it was felt that default layouts were desirable to facilitate use of the target
