3639-81 4851903 0026984 2 os1 3639 nternational Standard F-3s-/9 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION·MEXAYHAPOAHAH OPTAHM3ALWA IO CTAHAAPTW3AUWW+ORGANISATION INTE RNATIONALE DE NORMALISATION Cinematography - Projection reels/spools 75 to 312 mm diameter for 8 mm Type S motion-picture film -- Dimensions and specifications Cinematographie -- Bobines de projection pour film cinematographique 8 mm, type S, de diametre 75 a 312 mm -- Dimensions et spécifications First edition 1981-10-01 UDC 778.553.4 : 771.531.352 Ref.No. ISO3639-1981 (E) (3) 3639-1981 Descriptors : cinematography, projection reels/spools 75 to 312 mm diameter for 8 mm Type S motion-picture film, dimensions and specifications. rganization for Standardization Price based on 5 pages Not for Resale 3639-1 EobTnh 5969200 h Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards institutes (IsO member bodies). The work of developing Inter- national Standards is carried out through ISO technical committees. Every member body interested in a subject for which a technical committee has been set up has the and non-governmental, in liaison with isO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISo Council. International Standard ISO 3639 was developed by Technical Committee ISO/TC 36, Cinematography, and was circulated to the member bodies in March 1978. It has been approved by the member bodies of the following countries : Sweden Austria Germany, F.R. Belgium India Switzerland Canada Italy Turkey Czechoslovakia Japan United Kingdom Denmark Netherlands USA France Spain USSR No member body expressed disapproval of the document. tnternational Organization.for.Standardization, 1981 ? in for Standardization Provided by IHS under license with ISC Noreproduction or networking permitted without license from IHS Not for Resale ISO 3639-1981 (E) INTERNATIONAL STANDARD 9 9969200 E06t58h 3639-1 Cinematography -- Projection reels/spools 75 to 312 mm diameter for 8 mm Type S motion-picture film - Dimensions and specifications Scope and field of application 3.5 Dimension J applies only within the maximum K diameter area, and represents the distance, or effective distance, be- This International Standard specifies the dimensions for 8 mm tween the respective reference planes of rotation for each Type S motion-picture projection reels/spools of 75 to 312 mm flange. diameter (with the exception of the 75 mm Type No. 7) that are interchangeabie on all types of reel-to-reel projection equip- ment. 3.6 Selection of dimension P value is dependent upon the thickness of the material used for the flanges. NOTE-The No.7reel (75mm),although temporarily recognized,will be superseded by that specified in iso 6033. it is recommended that new projection equipment and reel/spool manufacturing capacity According to the flange material thickness : should comply with the requirements of Iso 6033. 1) the K diameter area may be depressed (with P greater than zero); or Reference 2 2) the outside surfaces of the flanges may be flat from IS0 6033, Cinematography - Projection reels for8 mm Type S spindle hole area to periphery (with P equal to zero); or projector cassette -- Dimensions and specifications. 1) 3) in the case of flanges made of very thin material, the K diameter area may be raised rather than recessed (effec- Dimensions 3 tively, P less than zero). 3.1 The dimensions shall be as shown in the figures and given in the tables. 3.6.1 The P value for one flange should not differ from the corresponding P value for the other flange by more than NOTE - A datum reference plane of rotation is defined for each flange 0,5 mm. of areel/spoolbya plane coincident withthe surfaceof a flat 25,00mm diameter supportwhich iscentredonthespindleholedatum axisoftheflanges.Thereferencesurfacemakesco