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1、BRITISH STANDARD BS 1371:1973 Specification for 35 mm and 16 mm microfilms, spools and reels UDC 778.14:621.798.114 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:53:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1371:1973 This British Standard, having been approved by the Photographic
2、Industry Standards Committee, was published under the authority of the Executive Board on 26 October 1973 BSI 08-1999 First Published July 1947 First revision April 1956 Second revision October 1973 The following BSI references relate to the work on this standard: Committee reference PHC/16/3 Draft
3、for comment 71/80559 ISBN 0 580 07756 X Co-operating organizations The Photographic Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: The Governm
4、ent departments and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted on the committee entrusted with the preparation of this British Standard: Aslib*Graphic Reproduction Federation Ass
5、ociation of Manufactures and Suppliers forHer Majestys Stationery Office* the Graphic ArtsIlluminating Engineering Society Association of Photographic LaboratoriesInstitute of Incorporated Photographers British Federation of Master PrintersInstitute of Physics British Kinematograph, Sound and Televi
6、sion Institute of Reprographic Technology* SocietyLighting Industry Federation British Photographic Manufacturers Ministry of Defence* Association*Photographic Dealers Association Department of Health and Social SecurityPost Office* Department of Trade and IndustryScientific Instrument Manufacturers
7、 Drawing Office Material Manufacturers and Association Dealers Association*Sira Institute Association of Medical Records OfficersElectronic Engineering Association Association of Photographic TechniciansGreater London Council British Bankers AssociationLibrary Association British Broadcasting Corpor
8、ationMicrofilm Association of Great Britain British European AirwaysNational Reprographic Centre for British Overseas Airways CorporationDocumentation Business Equipment Trade AssociationPublic Record Office Civil Service DepartmentSociety of British Aerospace Companies Department of Trade and Indus
9、try,Society of Motor Manufacturers and Traders Warren Spring LaboratoryUnited Kingdom Atomic Energy Authority Electricity Council, the Central Electricity Generating Board and the Area Boards in England and Wales Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffi
10、eldun sheffieldun, na, Fri Nov 24 07:53:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1371:1973 BSI 08-1999i Contents Page Co-operating organizationsInside front cover Forewordii 1General1 1.1Scope1 1.2Definitions1 1.3Marking1 2Microfilms1 2.1Material1 3Spools and reels2 3.1General construction2
11、3.2Supply spools2 3.3Storage reels2 Figure 1 Arrangement of images3 Figure 2 Diagrams showing the winding of the film on the reel4 Figure 3 Spools and reels for 16 mm and 35 mm films6 Table 1 Minimum distances from image to film edge1 Table 2 Dimensions and tolerances for 30 m and 60 m spools and 30
12、 m reels 5 Publications referred to8 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:53:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1371:1973 ii BSI 08-1999 Foreword This British Standard, prepared under the authority of the Photographic Industry Standards Committee, is a revision of
13、the 1956 edition. This revision incorporates the requirements of ISO Recommendation R 1116:1969 “35 mm and 16 mm micro-films, spools and reels” and is also in line with American standards. Although the reel and spool dimensions differ from those in BS 1371:1956, reels and spools conforming to the 19
14、56 edition are compatible with the requirements of this edition. Reference to 70 mm spools has been deleted. References to readers and reader screens, which are to be the subjects of separate British Standards, have also been deleted. A British Standard does not purport to include all the necessary
15、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 document comprises a front cover, an inside front cover, pages i and ii, pages 1 to
16、8, an inside back cover 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 cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:53:16 GMT+00:00 2006, Uncontrolle
17、d Copy, (c) BSI BS 1371:1973 BSI 08-19991 1 General 1.1 Scope This British Standard specifies requirements for the essential dimensions and features of microfilms in roll and strip form, 35 mm and 16 mm wide, and their supply spools and storage reels. Guidance is given on the arrangement of images a
18、nd the sequence of pages on microfilms. NOTEThe titles of the British Standards referred to in this standard are listed on the inside back cover. 1.2 Definitions For the purposes of this British Standard the definitions given in BS . . . .1) apply. 1.3 Marking Microfilms or their packaging, spools a
19、nd reels shall be indelibly and clearly marked to indicate the following information: 1) Manufacturers name or trade mark. 2) The number of this British Standard, i.e. BS 1371. 3) For microfilms, the useful length of film supplied. 4) For microfilms, the words “emulsion in” or “emulsion out” as appr
20、opriate. NOTE 1The mark BS 1371 on or in relation to microfilms, spools or reels is a claim by the manufacturer that they comply with the requirements of the standard. NOTE 2Attention is drawn to the certification facilities offered by BSI, see the inside back cover of this standard. 2 Microfilms 2.
21、1 Material 2.1.1 Film stock. Microfilm stock shall comply with the requirements for safety films as defined in BS 850. 2.1.2 Dimensions 2.1.2.1 Width. The widths of 35 mm and 16 mm films shall conform to the width requirements of BS 4526-1 or BS 4526-2, as appropriate. 2.1.2.2 Thickness. The thickne
22、ss of film shall not exceed 0.16 mm. 2.1.2.3 Perforations. 16 mm film intended for the production of microfilms shall be either unperforated or perforated along one edge. 35 mm film may be unperforated, perforated along one edge or perforated along both edges. If film is perforated, the perforations
23、 shall conform to the requirements of BS 4526-1, ISO type 1, 1A, 3 or 3A or Part 2, ISO type 161RA or B, as appropriate. NOTEUnperforated film offers a larger useful area, but with perforated film constant registration of the image position is easier. The choice of film is determined by the equipmen
24、t to be used. 2.1.3 Winding. An integral leader and trailer of safety stock as defined in BS 850 shall be provided, both at least 300 mm long. A means shall be provided for fixing the end of the film to the hub of the spool without additional preparation. Unexposed film shall be wound emulsion side
25、in unless explicitly agreed between purchaser and manufacturer. 2.1.4 Size and placement of images 2.1.4.1 Distance of image from edge of film. The distances shall be not less than those given in Table 1. Table 1 Minimum distances from image to film edge 2.1.4.2 Arrangement. Images shall be arranged
26、 on the microfilm as shown in Figure 1. If a code is used to describe the arrangement of images, the following code shall be used: IA: single page with lines of print at right angles to the film edge. IB: single page with lines of print parallel to the film edge. IIA: two pages side by side with the
27、 lines of print at right angles to the film edge. IIB: two pages side by side with the lines of print parallel to the film edge. 2.1.4.3 Sequence of pages. The sequence of pages on the microfilm shall correspond as closely as possible to the order and position in which they are normally read, taking
28、 account of the shape of the original document and of the language in which it is written. To avoid unnecessary winding of the film, the table of contents and the index shall be reproduced immediately after the title page as well as at the end of the film. 1) In course of preparation. Unperforated e
29、dge mm Perforated edge mm 16 mm 35 mm 0.5 1.0 2.8 5.5 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:53:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1371:1973 2 BSI 08-1999 2.1.4.4 Winding. Exposed film shall be wound as shown in Figure 2(a) and Figure 2(b) so that an image F appears
30、correctly disposed when read by the unaided eye. In the case of film perforated along one edge, the type of winding shall be indicated as follows: when a roll of film is held so that the end of the film leaves the roll at the top and to the right, it shall be designated winding A, when the perforati
31、ons are towards the observer. When the perforations are away from the observer, it shall be designated winding B see Figure 2(c) and Figure 2(d). 2.1.5 Additional special requirements for microfilm in strip form 2.1.5.1 Length. The length of any strip shall not exceed 228 mm. 2.1.5.2 Reference marks
32、. Each strip shall bear an indication, legible to the unaided eye, identifying its contents and the originating organization. If the text occupies more than one strip, each strip shall be numbered and the last one shall indicate the end of the text. 3 Spools and reels 3.1 General construction The hu
33、bs of spools and reels may be of either solid or hollow construction but shall be so designed as to provide for: 1) The spindle mounting and drive specified in 3.2.3 and 3.3.3. 2) A method of film attachment complying with 2.1.3. The flanges of storage reels may be ribbed. Such ribbing shall be so d
34、esigned that there is no continuous groove which would permit a layer of film to move laterally. Ribbing shall not encroach on the seating for the clamping face, and the width over the ribbing and over any rolled edge at the periphery of the flange shall not exceed the overall width specified in Fig
35、ure 3. Spools and reels shall not have any sharp edges. 3.2 Supply spools 3.2.1 Capacity. Supply spools shall have a capacity of either 30 m or 60 m. On a 30 m spool it shall be possible to wind a useful length of 30 m of 16 mm or 35 mm film of the maximum permitted thickness (i.e. 0.16 mm) and on a
36、 60 m spool a useful length of 60 m of 16 mm film of the maximum permitted thickness (i.e. 0.16 mm). Unexposed positive (print) film shall contain continuous, unspliced film and may be supplied on a core complying with the requirements of BS 4356. 3.2.2 Dimensions. The dimensions of supply spools sh
37、all conform to the values in Table 2, as illustrated in Figure 3. 3.2.3 Spindle holes. Each flange shall have a square spindle hole and these shall be aligned. One flange shall have a keyway in a corner of the square; on the other flange a keyway is optional. A second keyway in the corner opposite t
38、o the first, offset drive holes and/or a slot are also optional. If there are keyways on each of the flanges they shall be aligned parallel to the spindle. The shapes and dimensions of the spindle holes, keyways, optional holes and slots shall conform to the values given in Figure 3(b). The offset d
39、rive holes are optional for both flanges. If provided, these drive holes in the flanges should be as shown in Figure 3 except that the following option is also acceptable: the centres of the offset drive holes may be located anywhere on the circles which are described by the radii U and V provided t
40、hat both holes are rotated an equal amount, and in the same direction, from the positions shown in Figure 3. Because of the different plastics moulding techniques which exist, it may be necessary to design the offset drive holes so that they appear to be different from those shown in Figure 3. Howev
41、er, in spite of their appearance, these offset drive holes shall be functionally the same as those shown in Figure 3. 3.2.4 Construction. The spools shall be constructed so that no extraneous light can reach any part of the film other than the outer turn. The material used for the spools shall be op
42、aque to radiations from 300 nm to 800 nm, and have low reflective characteristics in order to minimize the effect of extraneous light on the film. 3.3 Storage reels 3.3.1 Capacity. Storage reels shall have a capacity of 30 m length of film of the maximum permitted thickness. 3.3.2 Dimensions. The ou
43、tside diameter shall not exceed, and the core diameter shall not be smaller than the values in Table 2, as illustrated in Figure 3. 3.3.3 Spindle holes. Offset drive holes and/or slots are optional. 3.3.3.1 Reversible reels. A reversible reel shall have a square spindle hole with one keyway on each
44、flange see Figure 3(b), with spindle holes and keyways aligned. A reference mark, such as an identation or a paint mark, shall be placed on one flange, to assist identification for correct loading. 3.3.3.2 Non-reversible reels. A non-reversible reel shall have one square and one round spindle hole s
45、ee Figure 3(c). Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:53:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1371:1973 BSI 08-19993 Figure 1 Arrangement of the images NOTEIn the above figures, an odd number symbolizes the right-hand page, and an even number symbolizes the left-hand
46、page. In this way the simplex arrangement shown in IIA of Figure 1(a) can be distinguished from the duplex arrangement in Figure 1(c). Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:53:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1371:1973 4 BSI 08-1999 Figure 2 Diagrams showing the w
47、inding of the film on the reel Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 07:53:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1371:1973 BSI 08-19995 Table 2 Dimensions and tolerances for 30 m and 60 m spools and 30 m reels (see also Figure 3) Circled figures refer to the notes below t
48、his table M and Mh C and DeEfHg J1 and J1J260 m30 m Pi Supply spools 16 mm32.0 0.518.3 0.2J1+ 2P125.5 0.591.5 0.50.5 max. 35 mm32.0 0.535.30 0.2037.5 0.4J1+ 2P91.5 0.50.5 max. Storage reels 16 mm19.0 1.022.0 max.92.0 2.0 35 mm38.0 1.041.0 max.92.0 2.0 All dimensions in millimetres. Notes to Table 2
49、NOTE 1For D, see Figure 3(c). The spindle passing through the round or square holes has a diameter of 7.90 0.10 mm. NOTE 2The core shall be concentric with the spindle holes within the following values (for total indicator reading terms, multiply values, by two): 16 mm35 mm Supply spools0.4 mm0.5 mm Storage reels1.0 mm1.0 mm NOTE 3The minimum values given for storage reels are intended particularly to allow the use of supply spools as storage reels, when the distance between flanges is at least 16.10 mm for 16
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