1、BRITISH STANDARD AEROSPACE SERIES BS EN 2547:1989 Specification for Filming of documents Microfilm105mm (Microfiche A6) This European Standard EN2547 has the status of a British Standard. UDC 629.7:651.004.4:778.14.072BSEN 2547:1989 This British Standard, having been prepared under the directionof t
2、he Aerospace Standards Policy Committee, waspublished under the authorityof the Board of BSIandcomes into effect on 31October1989 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/-/1 Draft for comment 84/76074 DC ISBN 0 580 17745 9 Cooperating org
3、anizations The European Committee for Standardization, under whose supervision this European Standard was prepared, comprises the national standards organizations of the following Western European countries. Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark D
4、ansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione N
5、etherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Instituto Espaol de Normalizacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institutio
6、n Amendments issued since publication Amd. No. Date of issue CommentsBSEN 2547:1989 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Brief history 2 Text of EN 2547 3 National appendix A Inside back cover National appendix B Inside back coverBSEN 2547:198
7、9 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN2547 “Aerospace series. Filming of documents. Microfilm105mm (Microfiche A6)”, published by the European Committee for S
8、tandardization (CEN). EN2547 was produced as a result of international discussion in which the UK took an active part. 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
9、a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may
10、have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN2547 April1987 UDC629.7:651.004.4:778.14.072 Key words: Reproduction, recording characteristics, photographic recording, technical drawings mi
11、crofilm, micrographics, files, document storage. English version Aerospace series Filming of documents Microfilm105mm (Microfiche A6) Srie arospatiale Enregistrement de documents sur film Microfilm105mm (Microfiche A6) Luft- und Raumfahrt Schriftgutverfilmung Mikrofilm105mm (Mikroplanfilm A6) This E
12、uropean Standard was accepted by CEN on1986-08-12. CEN members are bound to comply with the requirements of CEN 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 referen
13、ces concerning such national standards may be obtained on application to the CEN Central Secretariat 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
14、into its own language and notified to CEN Central Secretariat has the same status as the official versions. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland a
15、nd UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN1987 Copyright reserved to all CEN members Ref. No. EN2547:1987 EEN2547:1987 BSI 01-2000 2 Brief history This draft E
16、uropean Standard has been prepared by the European Association of Aerospace Constructors (AECMA). After enquiries and votes carried out in accordance with the rules of this Association it has successively received the approval of the National Associations and the Official Services of the member coun
17、tries of AECMA, prior to its presentation to CEN. According to the Common CEN/CENELEC Rules, following countries are bound to implement this European Standard: Belgium, France, Germany, Italy, Netherlands, Spain, UnitedKingdom. Contents Page Brief history 2 0 Introduction 3 1 Scope and field of appl
18、ication 3 2 Reference 3 3 Composition 3 4 Duplicates 4 Figure 3EN2547:1987 BSI 01-2000 3 0 Introduction Microfilm is used for the exchange, distribution and filing of documents. 1 Scope and field of application This standard specifies the deviations from ISO2707 1)necessary for aerospace application
19、. It shall be applied for filming documents on105mm microfilm (A6 microfiche) to ensure uniform presentation of the microform for the exchange of information in the aerospace industry. 2 Reference ISO 2707:1980, Micrographics Transparent A6 size microfiche of uniform division image arrangements N.1
20、and N.2. 3 Composition 3.1 Reduction ratio The reduction ratio of1:24 (nominal value) shall be used for filming. 3.2 Frame arrangement It corresponds to the arrangement of images N.2 of ISO2707: Single frames:7 rows 14 columns =98 frames; Double frames:7 rows 7 columns =49 frames. A combination of s
21、ingle and double frames is possible. 3.3 Image sequence The images shall be arranged in horizontal image sequence. The first microimage is located at the top left hand corner of the grid. Subsequent microimages appear in sequence from left to right and from top to bottom advancing by rows (seeFigure
22、). 1) Consequently, the data not given in this standard is to be obtained from ISO2707. Figure EN2547:1987 4 BSI 01-2000 4 Duplicates 4.1 Film Diazo film is recommended for duplicates 4.2 Image polarity Duplicates shall have light lines and characters on a dark background (negative appearing image).
23、 4.3 Generation For the exchange of information between organisations, only duplicates (2nd generation) made directly from the camera film should be used. 4.4 Title area Duplicates with a colour backed title area are not suitable for further duplication.BSEN 2547:1989 BSI 01-2000 National appendix A
24、 The United Kingdom participation in the preparation of this European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/-/1 upon which the following bodies were represented: Society of British Aerospace Companies Limited Ministry of Defence British
25、 Airways Civil Aviation Authority (Airworthiness Division) Coopted member National appendix B The British Standard corresponding to ISO2707, referred to in clause 2, is BS4187 “Microfiche” Part1“Specification for formats of60 and98 frames” (content identical).BS EN 2547:1989 BSI 389 Chiswick High Ro
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