Method for flattening acetate-based films using steam

Details Method for flattening acetate-based films using steam Method for flattening acetate-based films using steam

1993-09-03

1995-08-08

Psitos, Aristotelis

Optics: motion pictures

Methods

Carrier treating or working

354354, G03D 1508

Patent

active

054403618

ABSTRACT:
A method for treating acetate-based films, particularly those having a magnetic particle layer onto which a sound track has been recorded, so that information recorded on the film can be reproduced even when the film has been distorted by heat or humidity. The film is placed in a container where it contacts a sufficient amount of steam until the film absorbs sufficient moisture from the steam so that it softens and becomes sufficiently flat to provide good contact with a playback head. Preferably, the film contacts the steam for about 10 to about 20 seconds and, in particular, about 15 seconds.

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patent: 2011576 (1935-08-01), Gage
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patent: 3687710 (1972-08-01), Bunchez
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patent: 4109287 (1978-08-01), Kawai et al.
patent: 4274731 (1981-06-01), Carter et al.
patent: 4370408 (1983-01-01), Kiening
patent: 4535224 (1985-08-01), Westman, Jr.

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