BS PD ISO TR 10688-2015 Paper board and pulps Basic terms and equations for optical properties《纸 纸板和纸浆 光学性能的基本术语和公式》.pdf
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1、BSI Standards Publication Paper, board and pulps Basic terms and equations for optical properties PD ISO/TR 10688:2015National foreword This Published Document is the UK implementation of ISO/TR 10688:2015. The UK participation in its preparation was entrusted to Technical Committee PAI/11, Methods
2、of test for paper, board and pulps. A list of organizations represented on 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. The British Standards Ins
3、titution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 86127 7 ICS 85.040; 85.060 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 December 2
4、015. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD ISO/TR 10688:2015 ISO 2015 Paper, board and pulps Basic terms and equations for optical properties Papiers, cartons et ptes quations et termes de base pour proprits optiques TECHNICAL REPORT ISO/TR 10688 Ref
5、erence number ISO/TR 10688:2015(E) First edition 2015-11-15 PD ISO/TR 10688:2015 ISO/TR 10688:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utili
6、zed otherwise in any form or by any means, electronic or mechanical, including photocopying, 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 copyrigh
7、t office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org PD ISO/TR 10688:2015 ISO/TR 10688:2015(E)Foreword iv Introduction v 1 Scope . 1 2 T erms and definitions . 1 2.1 Brightness . 1 3 Calculations 9 3.1 Colour
8、 appearance, tristimulus values . 9 3.2 Reflectance factor, Y-value, opacity, transmittance 13 3.2.1 Reflectance factor, R .13 3.2.2 Luminous reflectance factor, R y13 3.2.3 Y-value (C/2)14 3.2.4 Opacity .14 3.2.5 Transmittance from luminous reflectance factor measurements 14 3.3 Brightness 14 3.4 L
9、ight-scattering and light-absorption coefficients .15 3.4.1 Conditions for the Kubelka-Munk theory 15 3.4.2 Calculations of s and k16 3.5 Chromaticity coordinates .17 3.6 Dominant wavelength 18 3.7 CIELAB colour space coordinates 18 3.8 Colour differences in CIELAB colour space .20 3.9 CIE-whiteness
10、 and Tint .21 3.9.1 CIE tint .21 3.9.2 CIE-whiteness, W 21 3.10 Fluorescence component 22 3.11 Metamerism index 23 3.12 Yellowness index 23 Bibliography .24 ISO 2015 All rights reserved iii Contents Page PD ISO/TR 10688:2015 ISO/TR 10688:2015(E) Foreword ISO (the International Organization for Stand
11、ardization) 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 body interested in a subject for which a technical committee has been established has the right
12、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 Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures u
13、sed 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 different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules
14、 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 shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identif
15、ied 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 is information given for the convenience of users and does not constitute an endorsement. For an explanation o
16、n 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) see the following URL: Foreword - Supplementary information The committee responsible for this document is
17、ISO/TC 6, Paper, board and pulps.iv ISO 2015 All rights reserved PD ISO/TR 10688:2015 ISO/TR 10688:2015(E) Introduction International Standards published by ISO/TC 6 for the determination of optical properties include a lot of definitions and formulae which are used to perform optical measurements a
18、nd calculations on papers and boards. It is very valuable for the pulp and paper industry utilizing these International Standards to have access to a single document which gathers together all the various formulae required for the calculation of these optical properties. This Technical Report is bas
19、ed on a SCAN-test document first published in 1994 and revised in 2003. This Technical Report includes not only formulae but also the values of various constants which appear in these formulae. It is particularly valuable to have the various formulae but also these constants standardized and gathere
20、d into a single document when new software programs are being developed either by an instrument manufacturer or in an independent laboratory to ensure that exactly the same expressions are used for such calculations in all the laboratories worldwide when measurements are made in accordance with the
21、ISO/TC 6 standards. ISO 2015 All rights reserved v PD ISO/TR 10688:2015 Paper, board and pulps Basic terms and equations for optical properties 1 Scope This Technical Report provides a summary of the formulae used for determining the optical properties of pulp, paper and board. This Technical Report
22、 is to be used in conjunction with the particular International Standards for the determination of the desired optical properties. This Technical Report provides the information necessary for those involved in development of software for computation of optical properties in accordance with current I
23、SO standards. 2 T erms a nd definiti ons For the purposes of this document, the following terms and definitions apply. 2.1 Brightness 2.1.1 ISO brightness, R457 diffuse blue reflectance factor, UV level C intrinsic diffuse radiance (reflectance) factor measured with a reflectometer having the charac
24、teristics described in ISO 2469, equipped with a filter or corresponding function having an effective wavelength of 457 nm and a half bandwidth of 44 nm, and adjusted so that the UV content of the irradiation incident upon the test piece corresponds to that of the CIE illuminant C Note 1 to entry: T
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