BS ISO BRITISH STANDARD 18922:2003 Imaging materials - Processed photographic films Methods for determining scratch resistance ICS 37.040.20 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BS ISO 18922:2003 National foreword This British Standard reproduces verbatim IS018922:2003 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee CPW/42, Photography, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled "International Standards Correspondence Index", or by using the“"Search" facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsiblefor its correct application. Compliance with a British Standard does not ofitselfconfer immunity from legal obligations. This British Standard was Summary of pages published under the authority of the Standards Policy and This document comprises a front cover, an inside front cover, the IsO title page, Strategy Committee pages ii to vi, pages 1 to 11 and a back cover. on 7May 2003 The BSI copyright date displayed in this document indicates when the documentwaslastissued. Amendments issued sincepublication Amd. No. Date Comments C BSI 7 May 2003 ISBN058041812X ISO INTERNATIONAL STANDARD 18922 First edition 2003-05-01 Imaging materials Processed photographic films Methods for determining scratch resistance Materiauxpourimage-Filmsphotographiquesdéveloppés- Méthodesdedéterminationdelaresistancea larayure Reference number ISO18922:2003(E) OSI BS ISO 18922:2003 := BSIS018922:2003 Contents Page 1 Scope 2 Normative references 3 Method A 3.1 Apparatus 3.2 Specimen preparation 2 3.3 Procedure 2 3.4 Rating 4 3.5 Evaluation 4 3.6 Interpretation 4 3.7 Test report 5 4 Method B 5 4.1 Apparatus 5 4.2 Specimen preparation 5 6 4.3 Procedure 4.4 Test report 6 Annexes Annex A (informative)Numbering system for related International Standards Annex B (informative) Validity of test methods 9 Bibliography 11 ii BSIS018922:2003 Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through ISO 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. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/lECDirectives,Part2 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. 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. ISO18922waspreparedbyTechnicalCommitteeISO/TC42,Photography. number within the block from 18 900 to 18 999 (see Annex A). iv BSIS018922:2003 Introduction Processed photographic film should have sufficient scratch or abrasion resistance to permit satisfactory performance when it is used in equipment for which it is intended and under conditions likely to be encountered Treatments to enhance the scratch resistance of film are commercially availab