1、BRITISH STANDARD AEROSPACE SERIES BS EN 2575:1989 Specification for Filming of documents 16 mm microfilm This European Standard EN 2575 has the status of a British Standard UDC 778.14.072:77.068.25:651.925:629.7BSEN2575:1989 This British Standard, having been prepared under the directionof the Aeros
2、pace Standards Policy Committee, waspublished under the authorityof the Board of BSI andcomes into effect on 30November 1989 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference ACE/-/1 Draft for comment 88/70232 DC ISBN 0 580 17742 4 Cooperating organiza
3、tions 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 Dansk
4、Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Icelandic Council for Standardization Ireland National Standards Authority of Ireland Italy
5、Ente Nazionale Italiano di Unificazione Luxemburg Inspection des travails et des mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Instituto Espaol de Normalizacin Sweden Standardiseringskommissionen i Sverige Swi
6、tzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date of issue CommentsBSEN2575:1989 BSI 10-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Brief history 2 Text of EN 2575 3 N
7、ational appendix A Inside back cover National appendix B Inside back coverBSEN2575:1989 ii BSI 10-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN2575“Aerospace series Filming of d
8、ocuments 16 mm microfilm”, published by the European Committee for Standardization (CEN). EN2575was 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 Standa
9、rds are responsible for their correct application. Compliance with 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, pages i and ii, theEN title page, pages 2 to 6, an inside back cover and a b
10、ack 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 cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2575 January 1989 UDC 778.14.072:77.068.25:651.925:629.7 Key words: Ai
11、rcraft industry, data recording, photographic recording, information interchange, microfilm, graphic symbols English version Aerospace series Filming of documents 16 mm microfilm Srie arospatiale Enregistrementdedocuments sur film Microfilm 16 mm Luft- und Raumfahrt Schriftgutverfilmung Mikrofilm 16
12、 mm This European Standard was accepted by CEN on1988-03-17. 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 bibliographic
13、al references 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 C
14、EN member 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, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal
15、, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1989 Copyright reserved to all CEN members Ref. No. EN 2575:1989 EEN2575:1989 BSI 10-1
16、999 2 Brief history This draft European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After enquiries and votes carried out in accordance with the rules of this Association, this draft has successively received the approval of the National Associations an
17、d the Official Services of the member countries of AECMA, prior to its presentation to CEN. In accordance with the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Lu
18、xemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. Contents Page Brief history 2 0 Introduction 3 1 Scope and field of application 3 2 References 3 3 Composition 3 4 Filming report 5 5 Presentation 5 6 Duplicates 6 Figure 1 3 Figure 2 3 Figure 3 4 Figure 4 4 Figure
19、 5 6EN2575:1989 BSI 10-1999 3 0 Introduction Microfilm is used for the exchange, distribution and filing of documents. 1 Scope and field of application This standard specifies the requirements to be met in the filming of documents on16mm film and preparation to ensure uniform presentation of the mic
20、roform for the exchange of information in the aerospace industry. 2 References ISO 543:1974, Cinematography Motion-picture safety film Definition, testing and marking. ISO 7000:1984, Graphic symbols for use on equipment Index and synopsis. 3 Composition 3.1 Film Unperforated safety roll film shall b
21、e used,16mm in width and0,1to0,16mm in thickness, conforming to ISO543 and to Figure 1. 3.2 Reduction ratio The nominal reduction ratio of 1 : 24 shall be used for filming. 3.3 Frame arrangement See Figure 2 (simplex exposure method). If the front and back of a document is to be filmed, the back sha
22、ll be filmed immediately after the front. It is recommended that the first image is reserved for identification of the contents of the document filmed, this should be readable to the normal eye. 3.4 Graphic symbols Graphic symbols 0075 to 0081 according to ISO7000 may be used for filming of original
23、s of all kinds. Examples of application: see Figure 3. Figure 1 NOTEThe position of letter F indicates the direction of reading. Figure 2 EN2575:1989 4 BSI 10-1999 3.5 Retrieval method (indexing) The methods specified in3.5.1 to3.5.5 may be used for retrieval of microimages or groups of microimages
24、on the film: 3.5.1 Visual sub-division (flash markers) 1) To separate series of images optically from each other a sequence of identical frames can be used. Example:see Figure 4. 3.5.2 Length counter (odometer) Coarse selection of images can be obtained with a film length counter on the retrieval eq
25、uipment. Figure 3 1) The term “flash markers” appears only in the english version Figure 4 EN2575:1989 BSI 10-1999 5 3.5.3 Index lines During filming index lines are included between the individual microfilm images in predetermined positions. This method facilitates coarse selection of images on the
26、 retrieval equipment. 3.5.4 Image markers (blips) During filming blips are included below each single image or the first image of a series of images. They make individual selection of the images or series of images by the retrieval equipment possible. 3.5.5 Binary code During filming binary codes ar
27、e included between or below each single image or the first image of each group of images. Using the retrieval equipment, this method permits the individual selection of images or series which have been filmed in random sequence. 4 Filming report When filming is completed, a report shall be prepared,
28、 certifying complete and correct filming of the originals. The report may also be filmed or deposited separately in paper form. 5 Presentation The presentations specified in5.1 to5.3 below may be used, according to the type of application: 5.1 Spool The film is wound onto a film spool which shall be
29、 marked according to its content. 5.2 Cassette The film is inserted into a single core or two core cassette which shall be marked according to its content. 5.3 Microfilm jacket The microfilm jacket (see Figure 5) is of A6size containing a transparent title area and5film channels below. When A4size o
30、riginals are filmed, the microfilm jacket can accomodate5film sections of14frames each, a total of70frames.EN2575:1989 6 BSI 10-1999 The film is inserted into the film channels of the microfilm jacket and cut to length. The title area is used for identification of the contents of the microfilm jacke
31、t. The title shall be readable to the normal eye. 6 Duplicates 6.1 Film Diazo-film is recommended for duplicates. 6.2 Image polarity Duplicates shall have light lines and characters on a dark background (negative appearing image). 6.3 Generation For the exchange of information between organisations,
32、 only duplicates (2nd generation) made directly from the camera film should be used. 6.4 Title area Duplicates produced from microfilm jackets with colour backed title area are not suitable for further duplication. Figure 5 BSEN2575:1989 BSI 10-1999 National appendix A The United Kingdom participati
33、on 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 Airways Civil Aviation Author
34、ity (Airworthiness Division) National appendix B The British Standard corresponding to ISO543 is BS5550 “Cinematography” BS5550-5.1.1 “Definition, testing and marking of motion-picture safety film” (content identical). There is no corresponding BritishStandard to ISO7000.BS EN 2575:1989 BSI 389 Chis
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