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1、BRITISH STANDARD BS ISO 8225:1995 Implementation of ISO 8225:1995 Photography Ammonia-processed diazo photographic film Specifications for stability ICS 37.040.20 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 8225:1995 This British
2、Standard, having been prepared under the direction of the Consumer Products and Services Sector Board, was published under the authority of the Standards Board and comes into effect on 15 February 1996 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference
3、CPW/42/-/5 Draft for comment 94/305915 DC ISBN 0 580 25282 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee CPW/42, Photography, to subcommittee CPW/42/-/5, Physical properties and image performance of photographic chemi
4、cal materials, upon which the following bodies were represented: British Film Institute British Institute of Professional Photography British Photographic Association Sira Limited The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Co
5、mpressed Gases Association Ordnance Survey Society of Archivists Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 8225:1995 BSI 12-1999i Contents Page Committees responsibleInsid
6、e front cover National forewordii Forewordiii Text of ISO 82251 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 8225:1995 ii BSI 12-1999 National foreword This British Standard reproduces verbatim ISO 8225:1995 and implements it as th
7、e UK national standard. This British Standard is published under the direction of the Consumer Products and Services Sector Board whose Technical Committee CPW/42/-/5 has the responsibility to: aid enquirers to understand the text; present to the responsible international committee any enquiries on
8、interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas standards, are available from Customer Services, BSI, 389 Chiswick High Road,
9、London W4 4AL. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This docu
10、ment comprises a front cover, an inside front cover, pages i and ii, the ISO title page, pages ii to iv, pages 1 to 14 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cov
11、er. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8225:1995(E) ii BSI 12-1999 Contents Page Forewordiii Introduction1 1Scope1 2N
12、ormative references2 3Definitions2 4Safety and hazards3 5Requirements for film base4 6Requirements for processed film4 7Requirements for the emulsion and backing layers of processed film4 8Requirements for image stability5 9Test methods5 10Image test methods9 11Classification for reporting10 Annex A
13、 (normative) Preparation of standard solution of tetrabutylammonium hydroxide11 Annex B (informative) Microfilm image quality11 Annex C (informative) Distinction between film storage copies and work copies13 Annex D (informative) Light-fading of diazo images13 Annex E (informative) Bibliography13 Ta
14、ble 1 Limits for tensile properties and loss in tensile properties on accelerated ageing of polyester-base film4 Table 2 Limits for change in diffuse density of image after accelerated testing5 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
15、 ISO 8225:1995(E) BSI 12-1999iii 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 technical committees. Each member body inte
16、rested 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. collaborates closely with the International Electrotechnical Co
17、mmission (IEC) on all matters of electrotechnical standardization. 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 75 % of the member bodies casting a vote. Intern
18、ational Standard ISO 8225 was prepared by Technical Committee ISO/TC 42, Photography. This second edition cancels and replaces the first edition (ISO 8225:1987), which has been technically revised. Annex A forms an integral part of this International Standard. Annex B, Annex C, Annex D and Annex E a
19、re for information only. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8225:1995(E) BSI 12-19991 Introduction Since 193
20、0, great advances have been made in the use of photographic films for the preservation of records. The preservation of records on film by national, state and municipal governments, by banks, insurance companies, industry and other enterprises, has been stimulated by recognition of the resultant econ
21、omies in storage space, organization, accessibility and ease of reproduction. The safe-keeping of pictorial film records having legal, scientific, industrial, medical, historical, military or other values has also become increasingly important. The use of film for records having long-term values nec
22、essitated the development of International Standards to specify the characteristics of film suitable for this purpose. ISO 10602 specifies the requirements for silver-gelatin films which are suitable for storage. This International Standard (for diazo film) and ISO 9718 (for vesicular film) give the
23、 requirements for photographic duplicate films suitable for storage. The term “archival film” has been discontinued and the new concept of “life expectancy” is introduced. Film life is classified by the LE or life expectancy rating as defined in this International Standard. For example, LE-100 repre
24、sents film with a life expectancy of 100 years when stored under extended-term storage conditions specified in ISO 5466. Criteria for properties of LE-10 and LE-100 diazo films are based upon the dark-ageing stability of diazo images. Different dark incubation tests are specified for LE-10 and LE-10
25、0 films. All other property and processing requirements for medium and long-term diazo films are identical. It is recognized that diazo images may show density changes after exposure to light. However, this International Standard covers only films used as storage copies, not as work copies (as defin
26、ed in Annex C). The light-fading requirements specified in this International Standard ensure satisfactory behaviour for storage copies which are not intended to be subjected to frequent light exposure. In addition to the characterization of films with respect to their expected storage life, diazo f
27、ilms are also separated into two classes (A and B); these classes are dependent upon their intended use. Class A films are those which retain density in both the visual and actinic region (printing) after storage. Such films can be viewed directly or reprinted onto ultraviolet (UV)-sensitive materia
28、ls. However, some diazo films are not intended to be reprinted onto UV-sensitive materials. Such films require only visual capabilities after storage and are designated as Class B films. Obviously, both Class A and Class B films can fall into the LE-10 and LE-100 categories. The requirements for Cla
29、ss A and Class B films are identical, with the exception of image-stability tests after dark-ageing and after light-fading. Everyone concerned with the preservation of records on photographic film should realize that specifying the chemical and physical characteristics of the material does not, by i
30、tself, assure satisfactory behaviour. It is also essential to provide the correct storage temperature and humidity, and protection from the hazards of fire, water, light and certain atmospheric pollutants. Conditions for the storage of record films are specified in ISO 5466 and ISO 10214. 1 Scope 1.
31、1 This International Standard establishes specifications for the stability of polyester-base safety film which has an ammonia-processed diazo photographic image. It covers photographic film intended for LE-10 and LE-100 records. 1.2 This International Standard applies to photographic film in which t
32、he image layer is a discrete layer attached to a transparent support. 1.3 It applies to roll film and sheet film. 1.4 This International Standard characterizes only the inherent keeping behaviour of the film. However, the suitability of a film record after extended storage depends on both the inhere
33、nt ageing characteristics of the film and the original image quality. The latter is discussed in Annex B. 1.5 This International Standard applies only to diazo photographic film intended and used as LE-10 and LE-100 storage copies. Storage copies should be stored in accordance with ISO 5466 and ISO
34、10214. It does not apply to diazo film records intended and used as “work” or “use” copies (as discussed in Annex C). Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8225:1995(E) 2 BSI 12-1999 2 Normative references The following standar
35、ds contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to in
36、vestigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 5-1:1984, Photography Density measurements Part 1: Terms, symbols and notations. ISO 5-2:1991, Photography Densit
37、y measurements Part 2: Geometric conditions for transmission density. ISO 5-3:1995, Photography Density measurements Part 3: Spectral conditions. ISO 527-3:1995, Plastics Determination of tensile properties Part 3: Test conditions for films and sheets. ISO 543:1990, Photography Photographic films Sp
38、ecifications for safety film. ISO 5466:1992, Photography Processed safety photographic films Storage practices. ISO 6077:1993, Photography Photographic films and papers Wedge test for brittleness. ISO 9718:1995, Photography Processed vesicular photographic film Specifications for stability. ISO 1021
39、4:1991, Photography Processed photographic materials Filing enclosures for storage. ISO 10602:1995, Photography Processed silver-gelatin type black-and-white film Specifications for stability. 3 Definitions For the purposes of this International Standard, the following definitions apply. 3.1 archiva
40、l medium recording material that can be expected to retain information for ever so that it can be retrieved without significant loss when properly stored NOTE 1There is, however, no such material and it is not a term to be used in International Standards or system specifications. 3.2 life expectancy
41、 (LE) length of time that information is predicted to be retrievable in a system under extended-term storage conditions NOTE 2However, the actual useful life of film is very dependent upon the existing storage conditions (see ISO 5466 and ISO 10214). 3.3 LE designation rating for the “life expectanc
42、y” of recording materials and associated retrieval systems. The number following the LE symbol is a prediction of the minimum life expectancy, in years, for which information can be retrieved without significant loss when stored under extended-term storage conditions NOTE 3For example, LE-100 indica
43、tes that information can be retrieved for at least 100 years storage. 3.4 extended-term storage conditions storage conditions suitable for the preservation of recorded information having permanent value 3.5 medium-term storage conditions storage conditions suitable for the preservation of recorded i
44、nformation for a minimum of 10 years 3.6 film base plastic support for the emulsion and backing layers 3.7 emulsion layer(s) image or image-forming layer(s) of photographic films, papers and plates 3.8 Class A films films which are usable both visually and for printing onto ultraviolet-sensitive mat
45、erials 3.9 Class B films films which are usable visually but do not have any density requirements for printing onto ultraviolet-sensitive materials 3.10 safety photographic film photographic film which passes the ignition time test and burning time test as specified in ISO 543 3.11 safety poly(ethyl
46、ene terephthalate) base film base composed mainly of a polymer of ethylene glycol and terephthalic acid Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 12:43:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8225:1995(E) BSI 12-19993 3.12 density degree of light absorption, reflection or scat
47、tering characteristics of a photographic image, expressed as the logarithm to the base 10 of the ratio of incident radiant flux to the transmitted, reflected or scattered flux. (See ISO 5-3.) 3.13 printing density density of a processed photographic image in which the incident and transmitted radian
48、t flux are evaluated by a receiver having the same spectral response as the photographic material on which the sample is to be printed, and the incident radiant flux has the same spectral energy distribution as the printing light source 3.14 visual diffuse density density of a processed photographic
49、 image in which the incident and the transmitted or reflected radiant flux are evaluated by the human eye, or by a receiver having the same spectral response as the human eye 3.15 projection density density of a processed photographic image in which the angular distributions of the incident and transmitted radiant flux are equal and specified NOTE 4For microfilm applications, the angular distribution is a nominal half-angle of 6,4, which corresponds to an f-number of f/4,5 and simulates a microfilm reader. 4 Safety and haz
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