Simple camera for use with film cassette having film-exposure st

Details Simple camera for use with film cassette having film-exposure st Simple camera for use with film cassette having film-exposure st

1989-09-14

1990-08-07

Brown, Brian W.

3542891, G03B 100

Patent

active

049471970

ABSTRACT:
A simple inexpensive camera to be used with a film cassette having a film-exposure status indicator movable from an unexposed position for providing a visible indication that a filmstrip within the cassette is generally unexposed, to a partly exposed position for providing a visible indication that the filmstrip is only partly exposed, and to an exposed position for providing a visible indication that exposure of the filmstrip is completed, is adapted to move the status indicator from its unexposed position to its exposed position, without stopping at its partly exposed position, substantially when film drive means of the camera changes the state of the filmstrip relative to the cassette. The change of state of the filmstrip relative to the cassette may be accomplished in the camera either by advancing the filmstrip from the cassette to expose the filmstrip or by returning the filmstrip to the cassette to safeguard the filmstrip.

REFERENCES:
patent: 4134657 (1969-01-01), Nomura
patent: 4423943 (1984-01-01), Gold
patent: 4682870 (1987-07-01), Atkinson

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