Instant camera with spring-urged pressure plate

Details Instant camera with spring-urged pressure plate Instant camera with spring-urged pressure plate

1988-03-25

1989-04-18

Gellner, Michael L.

354288, G03B 1752

Patent

active

048231550

ABSTRACT:
An instant camera equipped with a pressure plate for pressing against a stack of instant film units contained in a film pack to press the foremost film unit against the exposure opening frame of the film pack so as to place and hold that foremost film unit flat in the focal plane of the taking lens. A pressure relieving mechanism relieves pressure from the stack of instant film units at a predetermined time, so as to allow the foremost instant film unit to be withdrawn with reduced friction force from the film pack. To do this, the pressure relieving mechanism temporarily presses rearwardly against the pressure plate.

REFERENCES:
patent: 4201457 (1980-05-01), Erlichman

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