Apparatus for initializing a frame counter from a random setting

Details Apparatus for initializing a frame counter from a random setting Apparatus for initializing a frame counter from a random setting

1988-01-06

1988-07-05

Mathews, A. A.

354214, G03B 1736

Patent

active

047558423

ABSTRACT:
Each time an actuator is rotated in engagement with respective teeth of a frame counter in a disposable camera, the counter is rotated the equivalent of one frame to its next setting. To initialize the counter from a random setting during factory prewinding of an unexposed filmstrip onto a take-up spool, the counter includes an elongate rise located between two of its teeth. When the counter is rotated sufficiently in a prewinding direction to locate the elongate rise immediately ahead of the actuator, the counter is initialized. Since the actuator cannot surmount the elongate rise, continued rotation of the actuator in a prewinding direction will not rotate the counter to another setting. Thus as the filmstrip continues to be factory prewound onto the take-up spool the counter remains initialized.

REFERENCES:
patent: 2629563 (1953-02-01), Kesel et al.
patent: 3136291 (1964-06-01), Irisawa et al.
patent: 3892354 (1975-07-01), Nagao et al.
patent: 4540261 (1985-09-01), Matsumoto et al.
patent: 4610522 (1986-09-01), Tobioka et al.
patent: 4676621 (1987-06-01), Desormeaux
patent: 4707096 (1987-11-01), Lawther

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