ISO 12642-2-2006 Graphic technology - Input data for characterization of 4-colour process printing - Part 2 Expanded data set《印刷技术 四色印刷特征描述的输入数据 第2部分 扩展数据集》.pdf

《ISO 12642-2-2006 Graphic technology - Input data for characterization of 4-colour process printing - Part 2 Expanded data set《印刷技术 四色印刷特征描述的输入数据 第2部分 扩展数据集》.pdf》由会员分享，可在线阅读，更多相关《ISO 12642-2-2006 Graphic technology - Input data for characterization of 4-colour process printing - Part 2 Expanded data set《印刷技术 四色印刷特征描述的输入数据 第2部分 扩展数据集》.pdf（36页珍藏版）》请在麦多课文档分享上搜索。

1、 Reference number ISO 12642-2:2006(E) ISO 2006INTERNATIONAL STANDARD ISO 12642-2 First edition 2006-12-15 Graphic technology Input data for characterization of 4-colour process printing Part 2: Expanded data set Technologie graphique Donnes dentre pour caractrisation dimpression en quadrichromie Par

2、tie 2: Ensemble de donnes largies ISO 12642-2:2006(E) PDF 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 compu

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5、Central Secretariat at the address given below. ISO 2006 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 I

6、SO at the address below or ISOs 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 ISO 2006 All rights reservedISO 12642-2:2006(E) ISO 200

7、6 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative 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

8、) Default layouts and image files 24 Annex B (informative) Flesh tone data set. 28 Bibliography . 29 ISO 12642-2:2006(E) iv ISO 2006 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wo

9、rk 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-governm

10、ental, 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

11、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 least 75 % of the member bodies casting a vote.

12、ISO 12642-2 was prepared by Technical Committee ISO/TC 130, Graphic technology. ISO 12642 consists of the following 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 ISO 12642-2:2006(E) I

13、SO 2006 All rights reserved v Introduction The existing characterization data set defined in ISO 12642-1 has proven very effective for use in characterizing various printing processes. Two concerns have been raised with respect to the ISO 12642-1 data set. First, many of those developing characteriz

14、ation data for colour management systems feel that additional data points are needed to provide better sampling of the data space. The second concern 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

15、 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) have been prepared by ANSI Committee for Graphic Arts Technologies Standards (CGATS). In addition, the European Colour Initiative (ECI) took an early draft an

16、d 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 since 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 d

17、ata set elements in the current ECI 2002 data set. It is believed that this combined data set can fill the general colour characterization needs of all segments of the industry. During development of this part of ISO 12642, concerns were raised by the Japanese delegates concerning adequate represent

18、ation of flesh tones. While additional flesh tones were not included in the standard data set, a 112-element flesh tone data set has been included 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 peculia

19、rities 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 defined 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 o

20、f 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. 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.

21、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 minimize interaction between patch areas. In addition, the reference files that are included in this part of ISO 12642 clearly identify the elements that rep

22、resent 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 extracted from and/or related to the larger data set where appropriate. The International Organization for Standardization (ISO) draws attention to the fact t

23、hat it is claimed that compliance with this document may involve the use of a patent (Japanese Patent No. 2554366) held by Konica Minolta. ISO takes 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 neg

24、otiate licences under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the holder of this patent right is registered with ISO. Information may be obtained from: Mr. Kazuo Kato Industrial Standard Group Intellectual Propert

25、y Center Konica Minolta Technology Center, Inc. Tel. +81-42-589-8135 Fax +81-42-589-8088 e-mail: kazuo.kato.kkkonicaminolta.jp ISO 12642-2:2006(E) vi ISO 2006 All rights reservedAttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other

26、 than those identified above. ISO shall not be held responsible for identifying any or all such patent rights. INTERNATIONAL STANDARD ISO 12642-2:2006(E) ISO 2006 All rights reserved 1 Graphic technology Input data for characterization of 4-colour process printing Part 2: Expanded data set 1 Scope T

27、his 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 robust enough for all general applications. The needs of publication, commerci

28、al, 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 three chromatic coloured inks and a dark ink. It is an alternate to the IS

29、O 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 undated references, the latest edition of the referenced document (includ

30、ing 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 terms and definitions apply. 3.1 data set total collection of independently

31、 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 which the user is free to arrange in any target layout that meets their n

32、eeds 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 equivalent to the tone value/dot area of the half-tone film expressed as a

33、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 ISO 12642-2:2006(E) 2 ISO 2006 All rights reserved4 Technical requirements 4.1 Data set characteristics In order to meet the colour characterization needs of both the

34、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 printing processes. In addition, this data set sho

35、uld 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 scales, grey balance, etc.) were identified. Thos

36、e 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 flesh tone data. While these flesh tone data

37、 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. Eliminating all duplicated sets would resul

38、t 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 presence of 29 duplicate ink value sets. These

39、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 combinations assigned to paper to allow some

40、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 %, 70 %, 85 %, 100 % in C, M and Y 2 All combi

41、nations 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 of 0 %, 20 %, 40 %, 70 %, 100 % in C, M and

42、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 combinations of 0 %, 40 %, 70 %, 100 % in C, M and

43、 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 % 20 %, 12 %, 12 % with black levels of 0 %,

44、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 black levels of 0 %, 40 %, 60 %, 80 %, 100 % 10

45、0 %, 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, Y, and K with values of 100 %, 98 %, 95 %,

46、 90 %, 85 %, 80 %, 75 %, 70 %, 60 %, 50 %, 40 %, 30 %, 25 %, 20 %, 15 %, 10 %, 7 %, 5 %, 3 %, 2 %, 0 % ISO 12642-2:2006(E) ISO 2006 All rights reserved 3 Table 2, and the data file 12642-2_summary.csv accompanying this part of ISO 12642, lists the ID numbers and their associated CMYK ink values that

47、 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 that, while the

48、 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 ink value comb

49、inations 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 and 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 pa