Motion picture film gate and registration system

Details Motion picture film gate and registration system Motion picture film gate and registration system

1984-06-25

1985-06-11

Hayes, Monroe H.

Optics: motion pictures

Gates

With reciprocating pressure plate

226 55, G03B 148

Patent

active

045224765

ABSTRACT:
The film gate and registration system is used for motion picture film that is intermittently transported through a gate from one frame to the next. The arrangement is applicable to both motion picture cameras and projectors. A gate is provided with an aperture having solid marginal edge areas. Spaced pressure pads are arranged to be moved into and out of engagement with a film passing through the film gate. The pads press against the marginal edges of the film when the frame is in its dwell period in the gate either for exposure or projection. When the film is to be transported to the next frame, the pressure pads are withdrawn from the marginal edges and the film is lifted away from the aperture plane. In the preferred embodiment, registration indexing pins closely cooperate with the pressure pads in a special fashion to provide unusually precise positioning of each successive film frame at the end of the transport time.

REFERENCES:
patent: 3914035 (1975-10-01), Satterfield

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