Film transport mechanism for camera

Details Film transport mechanism for camera Film transport mechanism for camera

1995-01-04

1996-04-16

Hayes, Monroe H.

354214, G03B 100

Patent

active

055087701

ABSTRACT:
A film transport mechanism for a camera comprises drive means for advancing a filmstrip beginning with a leading end portion from a film cartridge, and a perforation sensor for detecting a turn-around perforation in a trailing end portion of the filmstrip to initiate return of the filmstrip to the film cartridge. The perforation sensor is movable to a sensing position against the filmstrip to be able to drop into the turn-around perforation when the turn-around perforation is advanced to the perforation sensor. A film presence sensor is located to be actuated by a forward edge of the leading end portion of the filmstrip as the filmstrip is advanced from the film cartridge, to move the perforation sensor to its sensing position before the turn-around perforation can be advanced to the perforation sensor.

REFERENCES:
patent: 4171893 (1979-10-01), Kawazoe
patent: 4437749 (1984-03-01), Ehgartner et al.
patent: 4540261 (1985-09-01), Matsumoto et al.
patent: 4855773 (1989-08-01), Harvey

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