BS-ISO-18922-2003.pdf
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1、BRITISH STANDARD BS ISO 18922:2003 Imaging materials Processed photographic films Methods for determining scratch resistance ICS 37.040.20 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:14:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 18922:2003 This British Standard was publishe
2、d under the authority of the Standards Policy and Strategy Committee on 7 May 2003 BSI 7 May 2003 ISBN 0 580 41812 X National foreword This British Standard reproduces verbatim ISO 18922:2003 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Tech
3、nical Committee CPW/42, Photography, which has the responsibility to: 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
4、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 responsible fo
5、r its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. 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 int
6、erests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to vi, pages 1 to 11 and a back cover. The BSI copyright date displayed in this document
7、 indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:14:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 18922 First edition 2003-05-01 Reference number ISO 18922:2003
8、(E) Imaging materials Processed photographic films Methods for determining scratch resistance Matriaux pour image Films photographiques dvelopps Mthodes de dtermination de la rsistance la rayure Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:14:49 GMT+00:00 2006, Uncontrolled Copy, (c) BS
9、I ii BS ISO 18922:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:14:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 29813002:2)E( ISO 3002 r llAithgs reservde iii Contents Page 1Scope 1 2Normative references 1 3Method A 1 3.1Apparatus . 1 3.2Specimen preparation . 2 3.3Procedure .
10、2 3.4Rating . 4 3.5Evaluation 4 3.6Interpretation . 4 3.7Test report 5 4Method B 5 4.1Apparatus . 5 4.2Specimen preparation . 5 4.3Procedure . 6 4.4Test report 6 Annexes Annex A (informative) Numbering system for related International Standards 7 Annex B (informative) Validity of test methods . 9 Bi
11、bliography . 11 BS ISO 18922:2003 iii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:14:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO :22981(3002)E vi ISO 3002 All rithgs reresvde Foreword ISO (the International Organization for Standardization) is a worldwide federation of national s
12、tandards 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 to be represented on that committee. International
13、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. International Standards are drafted in accordance with the rules gi
14、ven in the ISO/IEC 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
15、 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. ISO 18922 was prepared by Technical Committee ISO/TC 42, P
16、hotography. This International Standard is one of a series of International Standards dealing with the physical properties and stability of imaging materials. To facilitate identification of these International Standards, they are assigned a number within the block from 18 900 to 18 999 (see Annex A
17、). BS ISO 18922:2003 iv Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:14:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 29813002:2)E( ISO 3002 r llAithgs reservde v Introduction Processed photographic film should have sufficient scratch or abrasion resistance to permit satisfactory pe
18、rformance 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 available. Test methods are needed to evaluate the effectiveness of such treatments, as well as to rate the inherent sc
19、ratch resistance of photographic film. Scratch resistance is a complex and abstruse characteristic. Processed photographic film is subjected to several varieties of scratch, such as those caused by grit particles or by cinching in rolls. Since each variety has a different physical mechanism, scratch
20、 resistance of film is not an absolute, singular property. One film may be rated superior to another in one test, while the opposite ranking may be found in another test. There is not a scratch or abrasion test capable of ranking a variety of film types as they would behave under different practical
21、 conditions. The test methods described in this document yield results that correlate rather successfully with practical use in some applications, but not in all. The scratch resistance of photographic film is affected by relative humidity, processing conditions and surface friction. This means that
22、 scratch tests on photographic film are to be carried out in a controlled atmosphere with proper processing and without touching of the film surface or other handling that might unintentionally lubricate the surface. In some cases, such as lacquered or freshly processed film, the scratch resistance
23、may change with age. Lubrication generally increases the scratch resistance of a film surface. Lubrication can be detected by the method described in ISO 18904. Both the emulsion layer and the base side of processed photographic film are susceptible to scratching or abrasion. However, many film-hand
24、ling machines are designed to protect the emulsion side as much as possible, so that the base side takes the brunt of the wear. The test methods given in this document are applicable to both sides of the film. Scratch resistance greatly depends upon the geometry of the stylus used in the test. Styli
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