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    BS 5550-1 6 1-1978 Cinematography - 8 mm film - Splices - Specification for the dimensions of cemented or welded splices on 8 mm Type S motion-picture film for projector use《电影技术 第.pdf

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    BS 5550-1 6 1-1978 Cinematography - 8 mm film - Splices - Specification for the dimensions of cemented or welded splices on 8 mm Type S motion-picture film for projector use《电影技术 第.pdf

    1、BRITISH STANDARD BS 5550-1.6.1: 1978 ISO 3642:1976 Cinematography Part 1: 8 mm film Section 1.6 Splices Subsection 1.6.1 Specification for the dimensions of cemented or welded splices on 8 mm Type S motion-picture film for projector use UDC 778.5.068.24:778.582.068BS5550-1.6.1:1978 This British Stan

    2、dard, having been prepared under the directionof the CinematographStandards Committee, was published underthe authority of the Executive Board on 31 March 1978 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference CMS/28 Draft for comment 75/71542 DC ISBN

    3、0 580 10095 2 Cooperating organizations The Cinematograph Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government department and scientific and industrial organizations: Association of Cinematograph, Television and Alli

    4、ed Technicians* British Broadcasting Corporation* British Film Institute* British Kinematograph, Sound and Television Society* British Photographic Manufacturers Association Cinematograph Exhibitors Association of Great Britain and Ireland Film Laboratory Association Film Production Association of G

    5、reat Britain Health and Safety Executive Illuminating Engineering Society Independent Television Companies Association Royal Photographic Society* The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the p

    6、reparation of this British Standard: Association of Independent Cinemas British Amateur Cinematographers Central Council Department of Education and Science Lighting Industry Federation Limited National Association of Theatrical, Television attention is especially drawn to the following. The comma h

    7、as been used in some places as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Where the words “International Standard” appear, referring to this standard, they should be interpreted as “British Standard”. Cross-references. The

    8、 International Standards listed in clause2 are given for information purposes only. The following is implemented as a Subsection of BS5550; the relevant BS number is as given below: NOTEThe publication of ISO3773is awaited and at the moment there is no corresponding British Standard. A British Stand

    9、ard 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. ISO 1700:1972 BS 5550-1.1.1:1978 Summary of pages This d

    10、ocument comprises a front cover, an inside front cover, pages i and ii, pages1 and 2, 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.BS5550-1.

    11、6.1:1978 BSI 10-1999 1 1 Scope and field of application This International Standard specifies the dimensions of cemented or welded splices on8mm film perforated8mm Type S primarily intended for projection. 2 References ISO 1700, Cinematography 8 mm Type S motion-picture raw stock film Cutting and pe

    12、rforating dimensions. ISO 3773, Cinematography Tape splices for 8 mm Type S motion-picture film for projector use Dimensions 1) . 3 Dimensions and characteristics 3.1 The dimensions shall be as shown in the figures and given in the tables. 3.2 The film width at the splice shall not exceed8,08mm (0.3

    13、18in). If the film ends have been widened during scraping, the extra width shall be removed. 3.3 The spliced films should not be offset more than dimension G (seeFigure 3), as measured by the difference in the alignment of the reference edge side of the perforation holes on each of the spliced halve

    14、s. 3.4 In the plan view, the angle between the adjoining edges of the spliced film should be180 8. Thus, the spliced film should be aligned to the extent that when one portion of the film is placed against a straight edge, the other portion does not deviate more than0,35mm (0.014in) in15,2cm (6in).

    15、3.5 An optional splice method providing a symmetrical overlap about the frame line is temporarily recognized and is specified inTable 2. It is anticipated that if the manufacturer is directed to the recommended method, it will be possible to delete this table in future revisions. 3.6 It is temporari

    16、ly recognized that dimension A of an optional splice may be2,00mm (0.079 in) maximum, dimension C shall be0,84 mm (0.033 in) and dimension D shall be2,01mm (0.079 in) for combination8mm Type S and8mm Type R splicing blocks intended for personal-use photography. 3.7 The specifications intentionally p

    17、revent cutting into or including a perforation in the splice. 3.8 Beveled splices are recommended, and the splice orientation shown inFigure 2 is preferred for most applications because it provides the least optical disturbances to the scene. When magnetically-striped films are spliced, the overlap

    18、shown inFigure 2 should be oriented so that the trailing scene drops onto the sound head, rather than bumps into it. 1) At present at the stage of draft. +0,180,30 + 0.007 0.012 + 0,18 0,30 + 0.007 0.012 Figure 1 Splice dimension specificationBS5550-1.6.1:1978 2 BSI 10-1999 Table 1 Recommended frame

    19、 line splice Table 2 Optional splice Symmetrical overlap in respect to the frame line a Figure 2 Splice overlap orientation Figure 3 Alignment dimension specification Dimension mm in A 1,40 ref. 0.055 ref. B 4,227 0,025 0.1664 0.0010 C 1,55 0.061 D a 3,90 0,28 0.153 0,011 E 0,30 max. 0.012 max. G 0,

    20、50 max. 0.002 max. a For dimension D, the value in inches is the primary value. It is a mid-point value, derived from minimum and maximum values. Its metric equivalent has been rounded up so as to conform to practices by countries using the metric system. + 0,05 0,10 + 0.002 0.004 Dimension mm in A

    21、1,40 ref. 0.055 ref. B 4,227 0,025 0.1664 0.0010 C 2,24 0,20 0.088 0.008 D 3,38 0,20 0.133 0.008 E 0,30 max. 0.012 max. G 0,05 max. 0.002 max. a Because the same method of dimensioning is used as inTable 1, an additional figure showing the slight shift of the splice was not believed to be necessary

    22、(see 3.5).BS5550-1.6.1:1978 BSI 10-1999 Annex A.1 Splices for8mm Type S films have been made narrower than8mm Type R splices because narrower splices are less conspicuous on the screen and are less likely to affect the normal curvature of the film as it follows the bends in its path through cine mac

    23、hinery or continuous loop cartridges. A.2 The scraped area should be limited as closely as possible to the area covered by the overlapping film, in order to prevent the appearance of a line on the screen.BS 5550-1.6.1: 1978 ISO 3642:1976 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsIn

    24、stitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards sh

    25、ould make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical commit

    26、tee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, i

    27、nternational and foreign standards publications should be addressed to Customer Services. Tel:02089969001. Fax:02089967001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless otherwise req

    28、uested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and servi

    29、ces. Contact the Information Centre. Tel:02089967111. Fax:02089967048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:02089

    30、967002. Fax:02089967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a ret

    31、rieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designat

    32、ions. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:02089967070.


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