ISO 3642:1983 PDF

Name: ISO 3642:1983 — Cinematography — Cemented or welded splices on 8 mm Type S motion-picture film for projector use — Dimensions
SKU: ISO 3642:1983
Price: 25 EUR
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Cinematography — Cemented or welded splices on 8 mm Type S motion-picture film for projector use — Dimensions

Название (английский):

ISO 3642:1983

Cinematography — Cemented or welded splices on 8 mm Type S motion-picture film for projector use — Dimensions

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 2
Дата публикации:: 1 декабря 1983 г.
Издание:: ISO IS 3642 edition 2 version 1
ICS:: 37.060.20

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Описание (английский):

The specifications apply to film which is primarily intended for projection. If the film ends have been widened due to scraping, the extra width shall be removed. Cutting into or including a perforation in the splice shall be prevented. Bevelled splices are recommended. Also specified is the way film with magnetic stripes is spliced.

Abstract

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Упомянутые в описании и другие стандарты ISO

Overview

ISO 3642:1983 specifies dimensional and practical requirements for cemented or welded splices on 8 mm Type S motion‑picture film intended for projection. Developed by ISO/TC 36 (Cinematography), this International Standard defines how splices must be made and aligned to ensure reliable projector operation, minimize optical disturbance, and protect perforations and magnetic sound stripes.

Key topics and requirements

Scope: Applies to 8 mm Type S film primarily intended for projector use and covers both adhesive (cemented) and welded splices.

Splice dimensions: The standard fixes the geometry and maximum film width at the splice (film width at the splice shall not exceed 8.02 mm (0.316 in)). Detailed dimensioning for splice elements is provided in the standard figures and tables.

Edge preparation: If film ends have been widened during scraping, the extra width must be removed before splicing to meet dimensional limits.

Perforation protection: Cutting into or including a perforation in the splice is explicitly prevented-splices must avoid damaging or misaligning perforations.

Alignment tolerances: Spliced halves must be closely aligned; the standard limits offset and specifies alignment allowances (referenced as dimension G). One specific tolerance cited is that when one film portion is placed against a straight edge the other portion must not deviate more than 0.22 mm (0.009 in) over 152 mm (6 in).

Splice orientation: Bevelled splices are recommended and a preferred orientation is shown to minimize optical disturbance. For magnetically striped films, the overlap orientation must ensure the trailing image drops onto the sound head rather than bumps into it.

Optional splice forms: The standard temporarily recognizes an optional symmetrical overlap method (with specified dimensional limits) but anticipates phasing this out.

Applications and users

Film manufacturers and splicing equipment designers use ISO 3642 to design splicing processes and tooling for 8 mm Type S film.

Projectionists, post‑production shops, film archivists, and cartridge manufacturers follow the standard to produce reliable splices that avoid projector jams, image artifacts, and sound-head interference.

Quality assurance and inspection teams use the dimensional tolerances to verify splice conformity and to prevent damage to perforations and magnetic tracks.

Related information

Developed by ISO/TC 36 (Cinematography). ISO 3642:1983 is the second edition (1983) updating earlier guidance on 8 mm splicing practices.

For implementation, consult the full ISO 3642:1983 document for exact figures, tables and all dimensional values.

Keywords: ISO 3642:1983, 8 mm Type S, cemented splices, welded splices, motion‑picture film, splice dimensions, film splicing, magnetic stripe splicing, bevelled splices.

ISO 3642:1983 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related information

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