1、May 2012 Translation by DIN-Sprachendienst.English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 91.
2、100.23!$|=A“1892630www.din.deDDIN EN ISO 10545-16Ceramic tiles Part 16: Determination of small colour differences (ISO 10545-16:2010)English translation of DIN EN ISO 10545-16:2012-05Keramische Fliesen und Platten Teil 16: Bestimmung kleiner Farbabweichungen (ISO 10545-16:2010)Englische bersetzung v
3、on DIN EN ISO 10545-16:2012-05Carreaux et dalles cramiques Partie 16: Dtermination de faibles diffrences de couleur (ISO 10545-16:2010)Traduction anglaise de DIN EN ISO 10545-16:2012-05SupersedesDIN EN ISO 10545-16:2000-12www.beuth.deDocument comprises 10 pagesIn case of doubt, the German-language o
4、riginal shall be considered authoritative.04.12 DIN EN ISO 10545-16:2012-05 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 189 “Ceramic tile” of the International Organization for Standardization (ISO) and has been taken over
5、as EN ISO 10545-16:2012 by Technical Committee CEN/TC 67 “Ceramic tiles” (Secretariat: UNI, Italy). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-02-73 AA Prfung von keramischen Bauteil
6、en fr Wand- und Bodenbelge. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 105-J03 DIN EN ISO 105-J03 ISO 11664-4 / CIE S 014 DIN EN ISO 11664-4 Amendments This standard differs from DIN EN ISO 10545-16:2000-12 as follows: a) the defin
7、ition of the term “commercial factor” (3.5) has been amended; b) Subclause 7.2 “Interpretation of results” has been revised; c) the standard has been editorially revised. Previous editions DIN EN ISO 10545-16: 2000-12 National Annex NA (informative) Bibliography DIN EN ISO 105-J03, Textiles Tests fo
8、r colour fastness Part J03: Calculation of colour differences DIN EN ISO 11664-4, Colorimetry Part 4: CIE 1976 L*a*b* Colour space EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10545-16 February 2012 ICS 91.100.23 Supersedes EN ISO 10545-16:2000 English Version Ceramic tiles - Part 16: De
9、termination of small colour differences (ISO 10545-16:2010) Carreaux et dalles cramiques - Partie 16: Dtermination de faibles diffrences de couleur (ISO 10545-16:2010) Keramische Fliesen und Platten - Teil 16: Bestimmung kleiner Farbabweichungen (ISO 10545-16:2010) This European Standard was approve
10、d by CEN on 29 January 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national s
11、tandards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language an
12、d notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Li
13、thuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brus
14、sels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10545-16:2012: E Contents Page Foreword 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions 4 4 Principle . 5 5 Test equipment . 5 6 Procedure 6 6.1 Test sp
15、ecimens . 6 6.1.1 Reference specimen . 6 6.1.2 Test specimen . 6 6.1.3 Preparation 6 6.2 Test procedure 6 7 Calculations and interpretation of results . 6 7.1 Calculations . 6 7.1.1 CIELAB values 6 7.1.1.1 Calculation of CIELAB values 6 7.1.1.2 Calculation of CIELAB colour difference values . 6 7.1.
16、2 Calculation of component CMC colour differences 6 7.1.3 Calculation of the CMC colour difference, Ecmc6 7.2 Interpretation of results . 7 8 Test report . 7 Bibliography . 8 EN ISO 10545-16:2012 (E) DIN EN ISO 10545-16:2012-05 2Foreword The text of ISO 10545-16:2010 has been prepared by Technical C
17、ommittee ISO/TC 189 “Ceramic tile” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 10545-16:2012 by Technical Committee CEN/TC 67 “Ceramic tiles” the secretariat of which is held by UNI. This European Standard shall be given the status of a national stan
18、dard, either by publication of an identical text or by endorsement, at the latest by August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
19、CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 10545-16:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Stand
20、ard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
21、 United Kingdom. Endorsement notice The text of ISO 10545-16:2010 has been approved by CEN as a EN ISO 10545-16:2012 without any modification. EN ISO 10545-16:2012 (E) DIN EN ISO 10545-16:2012-05 3 1 Scope This part of ISO 10545 describes a method for utilizing colour measuring instruments for quant
22、ifying the small colour differences between plain coloured ceramic tiles, which are designed to be of uniform and consistent colour. It permits the specification of a maximum acceptable value, which depends only on the closeness of match and not on the nature of the colour difference. This part of I
23、SO 10545 is not applicable to colour variations produced for artistic purposes. NOTE This test is applicable only when small colour differences between plain coloured tiles are important in a specification or by agreement. 2 Normative references The following referenced documents are indispensable f
24、or the 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 105-J03:2009, Textiles Tests for colour fastness Part J03: Calculation of colour differences CIE 01
25、5:2004, Colorimetry 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 chroma attribute of colour that is defined as deviation from grey of the same lightness NOTE The more a colour deviates from grey, the higher the chroma. 3.2 lightness parame
26、ter that relates the colour to a continuous grey scale between white and black EN ISO 10545-16:2012 (E) DIN EN ISO 10545-16:2012-05 43.3 CIE 1976 L*a*b* value CIELAB value value calculated from the measured spectral reflectance curves given in CIE 015:2004 NOTE 1 CIE stands for “Commission internati
27、onale de lclairage”1). NOTE 2 For more information about spectral reflectance curves, see ISO 23603/CIE S 012. More details on the CIE 1976 L*a*b* colour space can be found in ISO 11664-4/CIE S 014. 3.4 CMC colour difference Ecmcset of colour difference equations utilizing CIELAB (L*, C*ab, H*ab) va
28、lues, calculated between a test specimen and a reference standard, to determine the ellipsoidal boundary containing all colours which would be visually acceptable when compared to the reference standard NOTE CMC stands for the Colour Measurement Committee2). 3.5 commercial factor cf measurement of t
29、he tolerance agreed on by all parties or those commonly utilized in the tile industry for determining the acceptability of the colour difference, Ecmc4 Principle Colorimetric measurements are made on reference standard tiles and a test specimen of tiles of the same colour and the differences are cal
30、culated. The calculated CMC colour difference, Ecmc, of a test specimen is compared to a reference value, using a previously agreed-on commercial factor (cf) or the cf commonly used in the tile industry, to determine the acceptability of the colour match. NOTE 1 Colorimetry describes a measure of co
31、lour difference, not appearance difference. Calculations are only valid when the reference and test specimens have essentially the same gloss and texture. NOTE 2 It is intended that, on revision, ISO 13006 will include commercial factors of 0,75 for glazed tiles and 1,0 for unglazed tiles. 5 Test eq
32、uipment The instrument used for colour measurement shall be either a reflectance spectrophotometer or a tristimulus colorimeter. The instrument geometry shall conform to one of the four sets of illuminating and viewing conditions specified by the CIE. The instrument geometries are identified by the
33、convention: illuminating geometry/viewing geometry. The four accepted instrument geometries with their abbreviations are 45/normal (45/0), normal/45 (0/45), diffuse/normal (d/0) and normal/diffuse (0/d). If a diffuse geometry (d/0 or 0/d) instrument is used, the specular component of reflectance sha
34、ll be included in the measurement. The angle between the sample normal and the illuminating beam in 0/d geometry and the angle between the sample normal and the viewing beam in d/0 geometry shall not exceed 10. 1) Commission internationale de lclairage (International Commission on Illumination), Cen
35、tral Bureau, Kegelgasse 27, 1030 Vienna, Austria. 2) Colour Measurement Committee, The Society of Dyers and Colourists, Perkin House, 82 Grattan Road, Bradford BD1 2LU, United Kingdom. EN ISO 10545-16:2012 (E) DIN EN ISO 10545-16:2012-05 5 6 Procedure 6.1 Test specimens 6.1.1 Reference specimen To a
36、void the phenomenon of metamerism, select a batch of tiles containing the same pigments, or combination of pigments as samples submitted for testing. The reference sampling shall comprise at least five tiles. However, a smaller number of reference tiles may be used, but they shall represent a homoge
37、neous batch. 6.1.2 Test specimen Statistical methods shall be used to determine the number of randomly selected tiles which are representative, but the number shall never be less than five. 6.1.3 Preparation Clean the surface to be measured for colour with a cloth dipped in laboratory-grade isopropa
38、nol, followed by drying with a lint-free, dry cloth or paper tissue which does not contain fluorescent whitening agents (FWAs). 6.2 Test procedure Operate the instrument in accordance with the instructions supplied by the manufacturer, allowing specified warm-up time. Prepare the test and reference
39、standard tiles as outlined in 6.1.3. Take alternate readings of the reference specimen and the test specimen in quick succession, until a total of three readings has been made on each tile. Record them and use the average of the three measurements for each tile as the values for use in calculating t
40、he colour difference. 7 Calculations and interpretation of results 7.1 Calculations 7.1.1 CIELAB values 7.1.1.1 Calculation of CIELAB values Calculate the CIELAB values L*, a*, b*, C*aband H*abfrom the X, Y and Z values for each specimen, using the equations given in ISO 105-J03. Daylight illuminant
41、 (D65) and 10 observer shall be used. 7.1.1.2 Calculation of CIELAB colour difference values Calculate the CIELAB colour difference values L*, a*, b*, C*ab, and H*abusing the equations given in ISO 105-J03. 7.1.2 Calculation of component CMC colour differences Calculate the component CMC colour diff
42、erences, Lcmc, Ccmcand Hcmc, of the reference specimens and test specimens, following the procedure given in ISO 105-J03. 7.1.3 Calculation of the CMC colour difference, EcmcCalculate the CMC colour difference in CMC (l:c) units using the equations given in ISO 105-J03:2009, 3.3. When CMC colour dif
43、ference is used, a decision shall be taken on whether the ratio of lightness to chroma EN ISO 10545-16:2012 (E) DIN EN ISO 10545-16:2012-05 6CMC (l:c), as determined by the CMC equations, is acceptable. CMC allows the user to change the ratio of lightness to chroma (l:c). An l:c ratio of 1,5:1 is ty
44、pically used for smooth surface, high-gloss glazed tiles. 7.2 Interpretation of results For the purposes of determining acceptability, a “tolerance” (cf) which is agreeable to all parties involved shall be selected. The Ecmcvalue calculated between a test sample and the reference standard, when comp
45、ared to this agreed-on tolerance, provides a means of determining if a test sample is an acceptable match to the reference standard. Specimens which are compared to a reference standard fall into two categories: those for which the Ecmcvalues are less than or equal to the agreed-on tolerance are acc
46、eptable (pass), while those for which the Ecmcvalues are greater than the agreed-on tolerance are unacceptable (fail). 8 Test report The test report shall include the following information: a) a reference to this part of ISO 10545, i.e. ISO 10545-16; b) a description of the tiles; c) details of the
47、instrument and specific measurement conditions; d) the L*, C*ab, and H*abcomponents; e) the agreed-on (cf) tolerance; f) the average CMC colour difference calculated between the test and the reference tiles; g) the ratio of lightness to chroma. EN ISO 10545-16:2012 (E) DIN EN ISO 10545-16:2012-05 7 Bibliography 1 ISO 11664-4/CIE S 014, Colorimetry Part 4: CIE 1976 L*a*b* Colour space 2 ISO 13006, Ceramic tiles Definitions, classification, characteristics and marking 3 ISO 23603/CIE S 012, Standard method of assessing the spectral quality of daylight simula
