1、INCITS/ISO/IEC 19799:20072008 (ISO/IEC 19799:2007, IDT) Information technology Method of measuring glossuniformity on printed pagesINCITS/ISO/IEC 19799:20072008(ISO/IEC 19799:2007, IDT)Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproducti
2、on or networking permitted without license from IHS-,-,-INCITS/ISO/IEC 19799:20072008 ii ITIC 2008 All rights reserved 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 typefa
3、ces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties 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 Sys
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5、 event that a problem relating to it is found, please inform the Central Secretariat at the address given below. Adopted by INCITS (InterNational Committee for Information Technology Standards) as an American National Standard. Date of ANSI Approval: 6/18/2008 Published by American National Standard
6、s Institute, 25 West 43rd Street, New York, New York 10036 Copyright 2008 by Information Technology Industry Council (ITI). All rights reserved. These materials are subject to copyright claims of International Standardization Organization (ISO), International Electrotechnical Commission (IEC), Ameri
7、can National Standards Institute (ANSI), and Information Technology Industry Council (ITI). Not for resale. No part of this publication may be reproduced in any form, including an electronic retrieval system, without the prior written permission of ITI. All requests pertaining to this standard shoul
8、d be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of America Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-iiiContents Page Forewor
9、d iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Test Parameters and Conditions. 3 4.1 Set-up. 3 4.2 Sample Size . 3 4.3 Print Mode . 3 4.4 Paper 3 4.5 Maintenance 3 4.6 Original test charts for copiers . 3 4.7 Print Files. 4 5 Test Methodology . 4 5.1 Testing
10、Procedure for copiers. 4 5.2 Testing Procedure for printers 5 6 Determination of the gloss uniformity for printed pages . 5 6.1 Determination of differential gloss . 5 6.2 Determination of gloss uniformity within-page . 6 6.3 Determination of gloss consistency within a run 7 7 Test report . 7 Annex
11、A (informative) Differential gloss test charts and color values . 8 Annex B (informative) Examples of differential gloss measurement results using different paper substrates on copiers and printers. 13 Annex C (informative) Differential gloss perceptual scale. 15 Annex D (informative) Differential t
12、hreshold for visual gloss curve (JND estimates) 18 Annex E (informative) Gloss uniformity test charts, color values and result examples 19 Annex F (informative) G60 and G75 differential gloss round-robin experiment data . 26 Bibliography . 28 INCITS/ISO/IEC 19799:20072008 ITIC 2008 All rights reserv
13、edCopyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS
14、O 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, gove
15、rnmental 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 given in the ISO/IEC
16、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 least 75 % of the member
17、 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/IEC 19799 was prepared by Technical Committee ISO/IEC JTC 1, Information
18、technology, Subcommittee SC 28, Office equipment. INCITS/ISO/IEC 19799:20072008 ITIC 2008 All rights reservedCopyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-vIntroduction The pu
19、rpose of this International Standard is to provide a process for measuring objective print quality attributes for gloss non-uniformity on printed pages in reflection mode. This International Standard prescribes the following: a definition of gloss uniformity attributes representative of the print qu
20、ality on reflection prints; a procedure for gloss uniformity testing and the analysis of the resulting data; a method for evaluating and grading these measurements and deriving an assessment of gloss uniformity, enabling a means to correlate the objective gloss uniformity measurement to subjective i
21、mpression of gloss uniformity if appropriate; and the appropriate method of describing the gloss uniformity of printing and copying systems in documentation supplied to the consumer by the manufacturer. INCITS/ISO/IEC 19799:20072008 ITIC 2008 All rights reservedCopyright American National Standards
22、Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-
23、,-,-AMERICAN NATIONAL STANDARD INCITS/ISO/IEC 19799:200720081Information technology Method of measuring gloss uniformity on printed pages 1 Scope The scope of this International Standard is to define methods and processes of measuring objective print-quality attributes for the assessment of gloss no
24、n-uniformity on printed pages in reflection mode, and to provide transforms, when applicable, that relate the objective results to subjective responses, if appropriate. There are many existing standards (see Normative references and Bibliography for details) typically used for gloss measurement. Our
25、 intent is to leverage the existing standards and adapt those for use on gloss uniformity measurements where appropriate. This International Standard is composed of a standardized test methodology, which is based on established gloss measurement methodologies as noted in Clause 2 and in the Bibliogr
26、aphy. The methodologies have been modified so that, when applied to printed pages created by different marking technologies and imaging algorithms on different substrates, the results indicate the level of the objective gloss uniformity of the printed pages (in reflection mode). If the objective mea
27、surement can be linked to the subjective impression of gloss uniformity, then the linkage from objective measurement to subjective impression via mathematical transforms is provided. The reflection prints that are to be used as the subject of these tests can be created via printers or copiers (analo
28、g and digital). This International Standard should be applied only to electro-photographic bases prints. When more reflection prints made by other printing technologies become available for follow-up study, one may consider including those printing technologies in this International Standard as a re
29、vision. This International Standard does not address the measurement of gloss attributes of printed pages in transmission mode. Gloss uniformity attributes currently included in this International Standard are: differential gloss, gloss uniformity within a page, and gloss consistency within a run. D
30、ue to the current level of immaturity of commercially available objective micro-gloss measurement instruments, gloss artefact attributes (such as gloss grain, gloss spot, gloss streak, gloss band, gloss mottle/cloud, gloss moir) are not included in this International Standard at the present time, si
31、nce instrumented measurement procedure cannot be recommended at present. As instrumented measurement capability becomes available, they will be considered for adoption into this International Standard as a revision. 2 Normative references The following referenced documents are indispensable for the
32、application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2813, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 and 85 IS
33、O 8254-1:1999, Paper and board Measurement of specular gloss Part 1: 75 gloss with a converging beam, TAPPI method ITIC 2008 All rights reservedCopyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without licens
34、e from IHS-,-,-2 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 gloss value pertains to front surface reflection of incident light from an image or non-image area that varies with angle relative to the normal-to-the-receiver surface NOTE Ima
35、ges whose front surface exhibits a highly specular reflection are considered to be high gloss while those whose front surface exhibits more of a lambertian (matte) reflection characteristic are considered to be low gloss. Gloss values can differ depending on the measurement methodology (such as meas
36、urement angle of gloss instruments and the size of the sampled area) and the magnitude of gloss level in the area of interest. 3.2 differential gloss spread of the gloss readings on a single test target NOTE Differential gloss, when present, is an image content and substrate dependent effect. Colora
37、nt area coverage ranging from 0 % to high area coverage must be considered as that coverage difference which is commonly observed in typical images. The effective range of minimum and maximum gloss can vary dependent upon substrate gloss. Thus, an image with variable spatial colorant laydown can exh
38、ibit variation in gloss level, and this variation may be large enough to be observed and considered to be objectionable. Differential gloss, in this context, is most easily quantified when observing adjacent flat-field image regions of different content (density, colour, etc.). 3.3 within page (flat
39、-field) gloss variability attribute that often takes the form of a large-scale gloss gradient (gloss value change), or fade, from one side of the image (at the same colorant laydown) to the other or from top to bottom of the image NOTE This is generally evaluated within large flat field regions, sin
40、ce the same level of colorant laydown is needed over the entire region to correctly quantify this type of gloss variability. 3.4 page-to-page (flat-field) gloss variability variability in the gloss value of the document from page to page (one-sided printing as well as two-sided printing), or between
41、 adjacent pages (of the same image contents) NOTE This gloss value variation can be accompanied by any of the other gloss categories defined here, such as within page gloss variability or sundry gloss artefacts, and can probably only be meaningfully evaluated between pages with the same image conten
42、t. The magnitude of this attribute can be deduced from the measurement of gloss consistency within a run. 3.5 gloss consistency within a run gloss variation (flat-field) of the same colorant coverage on a similar substrate within a print run of a pre-defined run length 3.6 gloss artefacts such items
43、 as gloss grain, gloss spot, gloss streak, gloss band, gloss mottle/cloud and gloss moir NOTE More detailed descriptions of these artifacts can be found in the Normative references and the Bibliography. Due to the current level of immaturity of objective measurement equipment for these gloss artefac
44、ts, an instrumented measurement procedure cannot be recommended at present. As instrumented measurement capability becomes available, this will be considered for adoption into this International Standard. 3.7 mean gloss attribute that quantifies the overall level of glossiness of the print NOTE The
45、mean gloss value is calculated from the gloss values for the 40 individual printed patches (see the test chart in Annex A) on the print under test. The mean gloss value of the 40 patches is considered to be the mean gloss of the print. Mean gloss, for the purposes of ISO 19799, refers only to the me
46、an gloss of the test chart provided in Annex A. The mean gloss, which is image content dependent, will not necessarily be the same for other images. INCITS/ISO/IEC 19799:20072008 ITIC 2008 All rights reservedCopyright American National Standards Institute Provided by IHS under license with ANSI Not
47、for ResaleNo reproduction or networking permitted without license from IHS-,-,-34 Test Parameters and Conditions 4.1 Set-up Place the copier or printer on a horizontal surface and set-up the copier/printer according to the installation guide provided in the users manual. Use the most recent copier/p
48、rinter driver available from the manufacturer. The driver version will be specified on the test report. All image and print quality modifiers should be at their factory pre-set configuration for the copier/printer and default installed condition for the driver. If the printer/copier and driver differ, then the driver defaults should be used. Deviation from the above conditions should be noted in the test report. For the printer, to assure that the test page is rendered correctly, no page size modifiers such as “Fit to Page” should be used and font substitution sho
