1、BRITISH STANDARD BS ISO 1793:2005 Cinematography Reels for 16 mm motion-picture projectors (up to and including 610 m capacity: 38 cm size) Dimensions ICS 37.060.10 BS ISO 1793:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 14 February
2、2005 BSI 14 February 2005 ISBN 0 580 45442 8 National foreword This British Standard reproduces verbatim ISO 1793:2005 and implements it as the UK national standard. It supersedes BS 5550-2.9.1:1978 and BS 5550-2.9.2:1980 which are withdrawn. The UK participation in its preparation was entrusted to
3、Technical Committee CPW/36, Cinematography, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found
4、in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are respons
5、ible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the
6、 UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this
7、document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 1793:2005(E) OSI 5002INTERNATIONAL STANDARD ISO 1793 Second edition 2005-01-15 Cinematography Reels for 16 mm motion-picture projectors (up to and including 610 m cap
8、acity: 38 cm size) Dimensions Cinmatographie Bobines de projection pour film cinmatographique 16 mm (capacit maximale: 610 m pour le format 38 cm) DimensionsBSISO1793:2005IS:3971 O5002(E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes. In ccaocnadrw eith Aebods licensilop gnic,y this fi
9、le mairp eb ynted iv roweb detu slahl ton ide ebtlnu deess the typefaces whice era hml era deddebicsnede to i dnanstlaled t noeh computfrep reormign tide ehtin.g In wodlnidaot gnhis file, trapise atpecc tiereht nser ehnopsiiblity fo not infriigngn Aebods licensilop gnic.y ehT ISO tneClar Secrteiraat
10、 caceptl on siibality in this .aera Ai ebods a tredamafo kr Aebod SystemI sncotaropr.de teDails fo teh softwacudorp erts sut deo crtaee this PDF file cna f ebi dnuon tlareneG eh Info leratit evo the file; tP ehDc-Frtaeion marapterew setpo erimizde for irpnti.gn Evyre caer neeb sah taken to sneeru th
11、at the file is suitlbae fosu re yb ISO memdob rebeis. In tlnu ehikletneve y ttah lborp aem leratit gno it is f,dnuo plsaee inform ttneC ehlar Secrteiraat ta the serddaig sleb nevwo. ISO 5002 All irthgs erse.devr lnUeto sswrehise specified, on trap fo this lbupictaion maeb y cudorperro de tuilizi den
12、 yna form ro na ybm ynae,s lecetrinoc ro mecinahcal, inclidung tohpcoiypodna gn micrfoilm, wittuoh repmissii non writign from ietI rehSa Ot tsserdda eh ebolw or ISOs memreb i ydobn the cnuotrfo y ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947
13、22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Pulbisdehi n Switlrez dnaii ISO 5002 Allr ithgsr esedevrBSISO1793:2005IS:3971 O5002(E) I SO 5002 All irthgs ersedevr iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
14、 member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, gover
15、nmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC D
16、irectives, Part 2. The main task of technical committees is to prepare International Standards. 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
17、bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 1793 was prepared by Technical Committee ISO/TC 36, Cinematography. This s
18、econd edition cancels and replaces the first edition (ISO 1793:1975), which has been technically revised. BSISO1793:2005IS:3971 O5002(E) iv I SO 5002 All irthgs ersedevrIntroduction This edition of ISO 1793 provides for large capacity reels from 60 m to 610 m. The first edition (1975) had reel capac
19、ity of 15 m to 120 m. BSISO1793:2005INTENRATIONAL TSANDADR IS:3971 O5002(E)I SO 5002 All irthgs ersedevr 1Cinematography Reels for 16 mm motion-picture projectors (up to and including 610 m capacity: 38 cm size) Dimensions 1 Scope This International Standard specifies the dimensions and characterist
20、ics of 16 mm motion-picture film projection reels. 2 Dimensions 2.1 The dimensions shall be as shown in the figures and given in the tables. 2.2 The tip of the keyway, if rounded as shown in Figure 2, may have a minimum radius V/2, if instead, the tip of the keyway is made square as illustrated by t
21、he chain line, the square tip still shall observe the limits of U. 2.3 The outer surface of the flanges shall be flat out to a diameter of at least 31,75 mm (1,250 in). Dimension J is the thickness of the reel over the area described by this diameter. 2.4 Rivets or other fastening members shall not
22、extend beyond the outside surfaces of the flanges more than 0,8 mm (0,03 in) and shall not extend beyond the overall thickness indicated by dimension C. 2.5 Except at embossings, rolled edges and rounded corners, the limits shown shall not be exceeded at the periphery of the flanges, nor at any othe
23、r distance from the centre of the reel. 2.6 If spring fingers are used to engage the edges of the film, dimension F shall be measured between the fingers when they are pressed outward to the limit of their operating range. 2.7 Eccentricity of the flanges and hub with respect to the spindle hole axis
24、 shall not exceed the total variation shown in Table 2. 2.8 Lateral runout shall be measured with respect to the common axis established by the round and square holes. 3 Characteristics 3.1 Each flange, preferably, shall have a square spindle hole with dimension as illustrated; alternatively, one fl
25、ange may have a round spindle hole with a diameter of D (and no keyway). 3.2 If square spindle hole with corner keyways are used in each flange, the hole shall be aligned so that test bar 8,02 mm (0,316 in) in diameter shall pass completely through the reel. 3.3 Provision should be made for securing
26、 the end of the film so as to accept the full width of the film, and in such way that the film will be freely released at the end of its run. 3.4 Nominal values for dimensions E, F and G were chosen to provide lateral clearance for the film, which has a maximum width of 16 mm (0,630 in). However, a
27、channel of the indicated width is narrow enough so BSISO1793:2005IS:3971 O5002(E) 2 I SO 5002 All irthgs ersedevrthat the film cannot wander laterally too much as it is wound. If the channel is too wide, it is likely to cause loose winding of the film with resultant excessively large rolls. At the h
28、ub, the tolerances applied to dimension F are least because it is possible to control the separation fairly easily in that zone. At the region near the holes for the spindles, these tolerances are somewhat larger to allow for slight buckling of the flanges between the hub and the holes. At the perip
29、hery, the tolerances are still greater because it is difficult to maintain the distance with accuracy. 3.5 The opening in the corner of the square hole, to which dimensions U and V apply, is provided to fit the spindles of 35 mm rewinds, which are used in some laboratories. 3.6 Minimum and maximum v
30、alues for dimension T, the thickness of the flanges, were chosen to permit the use of various materials. 3.7 The outside diameter of the flanges was made as large as permitted by past practice in the design of projectors, containers for reels, rewinds and similar equipment. This was done so that the
31、 values of B could be made as great as possible. As a result, there is less variation throughout the projection of a roll in the tension to which the film is subjected by the take-up mechanism. This is especially true if a constant-torque device is used. 3.8 Film tension in a projector should be kep
32、t low to avoid perforation damage. In order to maintain low tension, it is necessary to keep the quotient B/A (hub diameter B divided by flange diameter A) as large as possible. 3.9 A good projection reel must meet certain minimal physical strength requirements, particularly with respect to the flan
33、ges. A reel that meets this standard must pass the following test for flange rigidity. Make three posts that are placed 120 degrees apart and constructed so they support a short length of the rim of the reel for a distance of 3,0 mm (0,12 in) radially. Apply a load of 2,2 N (half pound) over a centr
34、al area not greater than 31,8 mm (1,25 in) in diameter. Measure the vertical location of this area with a dial indicator. Add 4,4 N (1 pound) and measure again. Repeat the process on the other flange. The additional deflection caused by the 4,4 N load over that given by the 2,2 N load should be less
35、 than 0,89 mm (0,035 in). BSISO1793:2005IS:3971 O5002(E) I SO 5002 All irthgs ersedevr 3Table 1 Capacity dimensions Dimension A Dimension B Lateral runout Nominal capacity mm in mm in mm in 60 m (200 ft) 127,79 0,00 0,79 +5,031 0,000 0,031 +44,45 6,35 1,750 0,250 1,45 max. 0,057 max. 120 m (400 ft)
36、177,80 0,00 0,79 +7,000 0,000 0,031 +63,50 0,00 1,90 +2,500 0,000 0,075 +2,03 max. 0,080 max. 180 m (600 ft) 234,32 0,00 0,25 +9,225 0,000 0,010 +123,82 0,00 6,35 +4,875 0,000 0,250 +2,03 max. 0,080 max. 240 m (800 ft) 266,70 0,00 0,79 +10,500 0,000 0,031 +123,82 0,00 9,52 +4,875 0,000 0,375 +3,05 m
37、ax. 0,120 max. 370 m (1 200 ft) 311,15 0,00 3,18 +12,250 0,000 0,125 +123,82 0,00 6,35 +4,875 0,000 0,250 +3,56 max. 0,140 max. 490 m (1 600 ft) 355,60 0,00 6,98 +14,000 0,000 0,275 +123,82 0,00 6,35 +4,875 0,000 0,250 +4,06 max. 0,160 max. 610 m (2 000 ft) 381,00 0,00 0,79 +15,000 0,000 0,031 +123,
38、82 0,00 6,35 +4,875 0,000 0,250 +4,34 max. 0,171 max. Table 2 Other dimensions Dimensions mm in C Total thickness (including flared, rolled or bevelled edges, if any) 24,43 max. 0,962 max. D Spindle hole diameter 8,10 0 0,080,319 0 0,003E Distance between flanges at spindle holes 16,76 0,38 0,660 0,
39、015 F At hub 16,76 0,25 0,660 0,010 G At periphery 16,76 1,90 0 +0,660 0,075 0,000 +H Side of square spindle hole 8,10 0 0,080,319 0,000 0,003 +J Overall thickness at spindle hole 20,07 max. 0,790 max. T Flange thickness (adjacent to spindle hole) 2,67 0,690,105 0,027U Keyway depth 8,38 0,510,330 0
40、0,020V Keyway width 3,18 0,13 +0,125 0,005 0 +Flange and hub eccentricity 0,79 max. 0,031 max. BSISO1793:2005IS:3971 O5002(E) 4 I SO 5002 All irthgs ersedevraAt periphery. bAt hub. cAt spindle holes. Figure 1 Plan view and cross-section of reel a) Square hole b) Round hole Figure 2 Enlarged view of
41、spindle hole area BSISO1793:2005IS:3971 O5002(E) I SO 5002 All irthgs ersedevr 5Bibliography 1 ISO 1019:1982, Cinematography Spools, daylight loading type for 16 mm motion-picture cameras Dimensions 2 ISO 3647:1976, Cinematography Spindles for 16 mm motion-picture camera spools and projector reels D
42、imensions 3 SMPTE 235-1998 Motion-picture equipment (16-mm) Projection reels 200- to 2 300-ft capacity BSISO1793:2005BS ISO 1793:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presen
43、ts the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI
44、to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 899
45、6 9000. Fax: +44 (0)20 8996 7400. 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, international and foreign standards publications should be addressed to Customer
46、 Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Sta
47、ndards, unless otherwise requested. 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 o
48、n all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-. 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
49、and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-. Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- Further information about BSI is available on the BSI website at http:/www.bsi-. Copy
