1、November 2016 English price group 11No 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 85.060!%vEnglish version EN ISO
2、 82542:2016,English translation of DIN EN ISO 8254-2:2016-11Papier und Pappe Bestimmung des Glanzes Teil 2: Messung mit einem parallelen Strahl bei 75, DINVerfahren (ISO 82542:2016);Englische Fassung EN ISO 82542:2016,Englische bersetzung von DIN EN ISO 8254-2:2016-11Papiers et cartons Mesurage du b
3、rillant spculaire Partie 2: Brillant 75 avec un faisceau parallle, mthode DIN (ISO 82542:2016);Version anglaise EN ISO 82542:2016,Traduction anglaise de DIN EN ISO 8254-2:2016-11SupersedesDIN EN ISO 82542:200304www.beuth.deDocument comprises sz pagesDTranslation by DIN-Sprachendienst.In case of doub
4、t, the German-language original shall be considered authoritative.11.16 DIN EN ISO 8254-2:2016-11 2 A comma is used as the decimal marker. National foreword This document (EN ISO 8254-2:2016) has been prepared by Technical Committee ISO/TC 6 “Paper, board and pulps” in collaboration with Technical C
5、ommittee CEN/TC 172 “Pulp, paper and board” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Papier, Pappe und Faserstoff (DIN Standards Committee Paper, Board and Pulps), Working Committee NA 074-02-02 AA Optische Prfverfahren fr Papier, P
6、appe und Faserstoff. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 186 DIN EN ISO 186 ISO 187 DIN EN 20187 ISO 7944 DIN EN ISO 7944 ISO 8254-1 DIN EN ISO 8254-1 ISO 10110-5 DIN ISO 10110-5 Amendments This standard differs from DIN EN
7、ISO 8254-2:2003-04 as follows: a) Annex B has been updated; b) the Bibliography has been updated; c) the standard has been editorially revised. Previous editions DIN 54502: 1992-03 DIN EN ISO 8254-2: 2003-04 National Annex NA (informative) Bibliography DIN EN 20187, Paper, board and pulps Standard a
8、tmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples DIN EN ISO 186, Paper and board Sampling to determine average quality DIN EN ISO 7944, Optics and optical instruments Reference wavelengths DIN EN ISO 8254-1, Paper and board Measurement of
9、 specular gloss Part 1: 75 degree gloss with a converging beam, TAPPI method DIN ISO 10110-5, Optics and photonics Preparation of drawings for optical elements and systems Part 5: Surface form tolerances EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8254-2 July 2016 ICS 85.060 Supersedes
10、EN ISO 8254-2:2003English Version Paper and board Measurement of specular gloss Part 2: 75 gloss with a parallel beam, DIN method (ISO 8254-2:2016) Papiers et cartons Mesurage du brillant spculaire Partie 2: Brillant 75 avec un faisceau parallle, mthode DIN (ISO 8254-2:2016) Papier und Pappe Bestimm
11、ung des Glanzes Teil 2: Messung mit einem parallelen Strahl bei 75, DIN-Verfahren (ISO 8254-2:2016) This European Standard was approved by CEN on 19 May 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard th
12、e status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards 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, Fren
13、ch, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and 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,
14、 Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey
15、andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref.
16、No. EN ISO 8254-2:2016 EEN ISO 8254-2:2016 (E) 2 Contents Page European foreword . 3 Foreword 4 Introduction 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 6 4 Principle . 7 5 Equipment . 7 5.1 Reflectometer . 7 5.2 Gloss standards 7 5.2.1 Zero-gloss standards 7 5.2.2 Primary gloss s
17、tandards . 7 5.2.3 Working standards . 8 5.2.4 Intermediate gloss standards . 8 6 Sampling . 9 7 Preparation of test pieces 9 7.1 Conditioning 9 7.2 Preparation . 9 8 Procedure. 9 8.1 Calibration . 9 8.2 Determination of reflectometer value 10 8.3 Calculation and expression of results . 10 9 Test re
18、port 10 Annex A (normative) Description of the instrument . 11 A.1 Design of the reflectometer value 11 A.2 Properties of the reflectometer 12 A.2.1 Dimensions and tolerances of angles 13 A.2.2 Spectral adaptation . 13 A.2.3 Linearity and drift to display . 13 A.2.4 Polarization 14 A.3 Test piece-ho
19、lding device 14 Annex B (informative) N ominated organizations for calibration of intermediate gloss standards 15 Bibliography . 16 DIN EN ISO 8254-2:2016-11 EN ISO 8254-2:2016 (E) 3 European foreword This document (EN ISO 8254-2:2016) has been prepared by Technical Committee ISO/TC 6 “Paper, board
20、and pulps” in collaboration with Technical Committee CEN/TC 172 “Pulp, paper and board” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2017, and c
21、onflicting national standards shall be withdrawn at the latest by January 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This d
22、ocument supersedes EN ISO 8254-2:2003. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugo
23、slav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 8254-2:2016 h
24、as been approved by CEN as EN ISO 8254-2:2016 without any modification. DIN EN ISO 8254-2:2016-11 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally car
25、ried 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-governmental, in liaison with ISO, also take part in the work.
26、 ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the differe
27、nt approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules 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 b
28、e the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified 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)
29、.Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles i
30、n the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 6, Paper, board and pulps.This second edition cancels and replaces the first edition (ISO 8254-2:2003), which has been editorially revised (minor r
31、evision) to update the bibliographic references.ISO 8254 consists of the following parts, under the general title Paper and board Measurement of specular gloss: Part 1: 75 gloss with a converging beam, TAPPI method Part 2: 75 gloss with a parallel beam, DIN method Part 3: 20 gloss with a converging
32、beam, TAPPI methodAnnex A forms a normative part of this part of ISO 8254. Annex B is for information only.4DIN EN ISO 8254-2:2016-11 EN ISO 8254-2:2016 (E) IntroductionVisual gloss is a sensory impression which cannot yet be described completely. Some important physical variables which influence gl
33、oss are however known. The sensory perception of gloss under a suitable illumination results from a physical stimulus due to reflection of light from a surface. This reflection is defined by an indicatrix which changes with the angle of incidence. The maximum indicatrix value which is decisive for v
34、isual gloss impression is associated with specular reflection, at an angle of reflection which is approximately equal to the angle of incidence. The reflectometer value is determined by averaging the reflection in a defined angular region centred in the specular direction.NOTE 1 A reflectometer valu
35、e is a measure of the visual gloss only when the optical conditions of measurement, such as angles and apertures of illumination and observation, are similar to the conditions of viewing.NOTE 2 Because luminance and structure enter to some extent into the reflectometer value of the test piece, only
36、the comparison of test pieces with nearly the same luminance and structure is meaningful. The influence of luminance on the measurement result decreases rapidly with increasing reflectometer value and increasing angle of reflection.The proportion of specular reflection in the entire reflection incre
37、ases with increasing angle of incidence. Very matt surfaces generate a noticeable degree of specular reflection and, therefore, a noticeable gloss effect only above a certain minimum angle of incidence. On the other hand, a large angle of incidence reduces the ability to differentiate between surfac
38、es of high gloss.NOTE 3 Manufacturers of coated papers usually divide their products into two classes according to their surface gloss: matt coating and gloss coating. However, these classes are only defined approximately. The matt class has reflectometer values, measured according to this part of I
39、SO 8254, from 0 to approximately 20. The glossy class has reflectometer values higher than this value. As there is no precise correlation between reflectometer values measured with different geometries, it is advisable to compare the reflectometer values only within a single class of papers and usin
40、g the same measuring geometry.This part of ISO 8254 describes measurement at an angle of incidence of 75 using a parallel beam geometry commonly known as the 75 DIN method. Precision data are not available at the time of publication.NOTE 4 EN 14086 describes measurement at an angle of 45.5 DIN EN IS
41、O 8254-2:2016-11 EN ISO 8254-2:2016 (E) 1 ScopeThis part of ISO 8254 specifies a photometric test method for the assessment of visual gloss by means of a reflectometer value measured at an angle of 75. It is applicable to plane paper and board surfaces of gloss levels below 65, measured according to
42、 this part of ISO 8254. It should be the preferred method for paper and board surfaces of gloss levels below 20, measured according to this part of ISO 8254. Materials containing optical brightening agents may be measured.2 Normative referencesThe following documents, in whole or in part, are normat
43、ively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 186, Paper and board Sampling to determine average qualityIS
44、O 187, Paper, board and pulps Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samplesISO 10110-5, Optics and photonics Preparation of drawings for optical elements and systems Part 5: Surface form tolerancesCIE 038-1977, Radiometric an
45、d photometric characteristics of materials and their measurement3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1indicatrixangular distribution of the reflected light which is measured as illuminance (lm m2) on the receptor3.2reflectometerinstrum
46、ent for measuring quantities pertaining to reflection3.3reflectometer valuemeasured value which, for a given angle of incidence, is proportional to the integral of the reflection indicatrix within the solid angle defined by the apertures (see A.2.1) and is equal to 100 times the ratio of the value o
47、btained for the sample to that of a defined specularly reflecting surface (5.2.2)3.4specular glossreflectometer value as defined in 3.3Note 1 to entry: The defined specularly reflecting surface thus has an assigned reflectometer value of 100. Reflectometer values are therefore not percentages.6DIN E
48、N ISO 8254-2:2016-11 EN ISO 8254-2:2016 (E) 4 PrincipleThe sample is illuminated with a collimated beam at an angle of 75 to the normal, and the reflectometer value is measured within a solid angle defined by a given aperture at an angle of reflection equal to the angle of incidence. The scale of th
49、e reflectometer is calibrated with reference to the reflection from a black glass plate or a quartz wedge with a specific refractive index.5 Equipment5.1 ReflectometerThe reflectometer shall consist of the following principal components: a collimator, a decollimator, an electric supply for the light source device, a photoelectronic receptor and a sample holder, as described in Annex A.5.2 Gloss standardsThe reflectomet
