Lens-fitted photographic film unit and method for assembling the

Details Lens-fitted photographic film unit and method for assembling the Lens-fitted photographic film unit and method for assembling the

1992-09-30

1994-05-10

Hayes, Monroe H.

354275, 354174, 354202, G03B 1702

Patent

active

053112318

ABSTRACT:
A lens-fitted photographic film unit comprises a main body having a photograph-taking function and a rear cover for shielding the rear of the main body in a light-tight manner. The main body has a film supply chamber and a film take-up chamber both of which are provided with respective bottom openings. The film supply chamber is provided with a first side edge limiting plate so as partially to shield the bottom opening. The rear cover is provided with a cap for closing the bottom opening of the film supply chamber and a second side edge limiting plate. A winding shaft is engaged with a film leader of a photographic film, drawn from a photographic film cassette and positioned in a film supply chamber. Similarly, the empty photographic film cassette is positioned in a film take-up chamber. When the rear cover is attached to the main body, an arc-shaped cutout of the first side edge limiting plate faces an arc-shaped cutout of the second side edge limiting plate to form a circular opening through which the winding shaft is inserted and withdrawn. The winding shaft is rotated in the opening to wind up the film thereon. After forming a film roll, the winding shaft is pulled out of the film roll through the opening and the cap is closed to seal the unit light-tightly.

REFERENCES:
patent: 4896178 (1990-01-01), Ohmura et al.
patent: 4954857 (1990-09-01), Mochida et al.
patent: 4954858 (1990-09-01), Ohmura et al.
patent: 5126775 (1992-06-01), Nakai et al.

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