Film magazine pin registration

Details Film magazine pin registration Film magazine pin registration

1986-05-23

1988-02-23

Griffin, Donald A.

G03B 1700

Patent

active

047266740

ABSTRACT:
A photographic device which has a film magazine which feeds photographic film over an aperture plate has apparatus for accurately registering the center of an image frame relative to the center of the transport perforations of the film. A relatively slow moving motor drives a film take-up reel to feed film over guide sprockets to move the film one frame into close proximity with the registration position. The motor is thereafter stopped and a platen having accurately disposed truncated pyramid shaped pins directed toward the film is forced toward the film with the pins entering perforations in the film and recesses in the aperture plate. The pins act to move the film minute amounts as required as they enter the perforations to correct the position of the film to precise registration. After the frame is exposed signals are supplied to remove the platen from the film engaging position and actuate the motor for the subsequent cycle. A cam driven by one of the sprockets controls a switch which stops the motor after one frame has been fed. An electrical solenoid is utilized to remove the platen from the film engaging position and after the motor is stopped a signal is supplied to deactivate the solenoid and springs thereafter force the platen toward the film.

REFERENCES:
patent: 1804680 (1931-05-01), Fairchild
patent: 2227240 (1940-12-01), Becker et al.
patent: 4049345 (1977-09-01), Tanabe et al.
patent: 4094603 (1978-06-01), Evers
patent: 4189228 (1980-02-01), Farrell

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