Light sensitive leader closure for roll film

Details Light sensitive leader closure for roll film Light sensitive leader closure for roll film

1997-06-13

1998-08-04

Mathews, A. A.

Photography

Camera detail

Detachable or removable film holder unit

430501, 206813, 206389, G03C 302

Patent

active

057909121

ABSTRACT:
A roll of photographic film where a film strip is coiled about a spool with a film leader attached to the film strip. The film leader includes a tongue portion, a tear line defining a tear-out region in the tongue portion, and an adhesive which is applied to the tear-out region. The tear-out region is bonded to an underlying convolution of the film leader when the film leader is wound on said roll. When a user lifts the film leader from the roll, the tear line is ruptured allowing the tear-out region to remain affixed to the underlying convolution of the film leader. This, in turn yields a hole in the film leader which can be used to attach the film loader to a take-up spool within a camera.

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patent: 4930712 (1990-06-01), Smart
patent: 5492221 (1996-02-01), Light et al.

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