Film registration gate assembly

Details Film registration gate assembly Film registration gate assembly

1994-02-07

1995-06-13

Stodola, Daniel P.

Advancing material of indeterminate length

Processes

Involving registration of material

352194, 355 76, 226 57, B65H 2302, B65H 2018

Patent

active

054234670

ABSTRACT:
A film registration gate assembly has a gate with focal positioning location for focal positioning of an image frame of a strip film with edge perforations. Undersized first and second pins enter a pair of transversely aligned perforations of the film to register the image frame with the positioning location. An undersized third pin enters a third perforation spaced along the film from the second pin and then pulls the film obliquely to a reference line extending between the first and second pins to nest against the first and second pins the perforations thereat and register the image frame precisely at the aperture. A plate with a window registering with the image frame and aperture clamps the film against the gate. The window, positioning location and image frame are of corresponding size and shape. The pins register the image frame precisely with the positioning location, and the plate maintains the image frame in precise focal position thereat.

REFERENCES:
patent: 2418943 (1947-04-01), Jones
patent: 2986316 (1961-05-01), Petersen
patent: 3776626 (1973-12-01), Lewis
patent: 4522476 (1985-06-01), Renold
patent: 4835555 (1989-05-01), Maxwell

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