Camera reading information applied to a film unit

Details Camera reading information applied to a film unit Camera reading information applied to a film unit

1995-02-28

1995-12-26

Blankenship, Howard B.

354106, G03B 1724

Patent

active

054792266

ABSTRACT:
A camera is provided in which when a film unit exposed up to a midroll frame in one wind mode is reloaded, the exposure of the film unit can be continued in another wind mode without causing double exposure. The camera discriminates whether the next frame adjacent to an exposed frame which has just been exposed is an unexposed frame or an exposed frame. If the next frame is an exposed frame, the operation of rewinding film into a cartridge is performed to thereby render further photographing impossible. Thereby, when a film unit exposed up to a midroll frame in one wind mode (e.g. the ordinary wind mode) is loaded into the camera, the continuation of the exposure of the film unit can be effected in the other wind mode (e.g. the prewind mode) without causing double exposure. A camera is further provided which utilizes two or more recording areas prepared in a data recording portion provided to a film leader portion, and in which data is recorded on a recording area different from that in a previous recording operation upon each rewind operation, thus eliminating the problem caused by overwritten data.

REFERENCES:
patent: 4671636 (1987-06-01), Desormeaux
patent: 4814802 (1989-03-01), Ogawa
patent: 4860037 (1989-08-01), Harvey
patent: 4864332 (1989-09-01), Harvey
patent: 4878075 (1989-10-01), Cannon
patent: 5006873 (1991-04-01), Wash
patent: 5398087 (1995-03-01), Kazami et al.

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