Method and apparatus for indicating the exposure status of a non

Details Method and apparatus for indicating the exposure status of a non Method and apparatus for indicating the exposure status of a non

1998-10-12

2000-05-16

Gray, David M.

Photography

Camera detail

Detachable or removable film holder unit

G03B 1726

Patent

active

060627441

ABSTRACT:
A method for indicating the exposure status of a non-exposed roll of film contained in a film canister with opposite ends having an axially positioned aperture in one end to receive a support bearing of a camera, and an axial positioned slot in the canister with a tail end of the film extending therethrough involves the steps of placing a removable adhesive seal member over the aperture in the canister to prevent the canister from being operatively placed in a camera to indicate to a photographer that the film had not been previously exposed because the presence of the seal would have prevented the canister from being placed in a camera for exposure purposes. An alternate method step is to wrap a removable band around the tail of the film and the canister and releasably securing the band to the canister to indicate to a photographer that the film had not been previously exposed. The apparatus for achieving the aforementioned methods involves the use of a releasable seal on the end of the canister to cover the aforementioned aperture. An alternate form of the apparatus is to wrap a removable band around the tail end of the film and releasably secure it to the canister to remind the user of the film that the film has not yet been exposed.

REFERENCES:
patent: 3647465 (1972-03-01), Shamay
patent: 4505387 (1985-03-01), Seto
patent: 5032862 (1991-07-01), Behnke
patent: 5145065 (1992-09-01), Mizutani et al.
patent: 5213372 (1993-05-01), Kuo
patent: 5624033 (1997-04-01), Arai et al.

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