ISO INTERNATIONAL STANDARD 1039 Third edition 1995-11-15 Cinematography Cores for motion-picture and magnetic film rolls - Dimensions Cinematographie - Noyaux pour films cinematographique et magnetique - Dimensions ISO Referencenumber ISO 1039:1995(E) No reproduction or networking permitted without license from IHS Not for Resale ISO1039:1995(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO 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, governmental 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. Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 1039 was prepared by Technical Committee ISO/TC 36, Cinematography. This third edition cancelsand replaces the second edition (IS0 1039:1988), of which it constitutes a technical revision. ISO1995 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organizationfor Standardization Case Postale 56 . CH-1211 Geneve 20 : Switzerland Printed in Switzerland Standardizatior by IH Not for Resale INTERNATIONAL STANDARD ISO ISO1039:1995(E) Cinematography Cores for motion-picture and magnetic film rolls Dimensions 1 Scope the cores has been fixed intentionally to encourage a com- mon manufacturing practice of keeping the maximum widths of cores very slightly less than the minimum widths This International Standard specifies the sizes and di- ofcorrespondingfilms. mensions of cores for motion-picture and magnetic film rolls. 3 Means of attaching film to all cores are optional. Com monly used are cores having one anchoring slot or two 2Dimensions of cores anchoring slots angled in opposite directions.The latter fa- cilitates film attachment whichever way the core is placed Cores for film of nominal width 8 mm, 16 mm, on its spindle. It is recommended that the edges of any slot, if used, be depressed slightly to minimize pressure marks 17,5 mm, 35 mm, 65 mm and 70 mm shall be in the first convolutions of the film. manufactured in accordance with the dimensions and tolerances specified in table 1 and figure 1. These 4 The rather large tolerances on dimension B are necess- cores shall be identified by numbers representing their nominal width and outside diameter in milli- many different manufacturers. It is expected, however, that metres, for example 8 x 50. cores made by any one manufacturer will be held to a con- siderably smaller tolerance range. This will help prevent NOTES large variations, including undue tapering of the core from one side to the other, of any manufacturer's products. 1 The dimensions in imperial units shown in figure 1 and intable1havebeenroundedtoshowacceptablepractice 3 Drive holes in 35 × 125 cores In a few such cases,the rounding direction differs from customary rulesapplied in converting millimetresto inches. Cores designated as 35 × 125 shall have eight drive 2 The direction and magnitude of the difference between holes with dimensions and locations as shown in fig- the dimension A values in table 1 and the nominal width of ure 2 and table 2. Copyrightl No reproduction or networking permitted without license from IHS Not for Resale