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Title: Film handling apparatus control system

Abstract: A control system for a cinematographic film cassette processor/projector unit. The control system includes a function programmer comprising an operating cycle selector responsive to a processed/unprocessed indicator on the cassette to program the control system for either a processed-film operating cycle or an unprocessed-film operating cycle and a logic unit for programming the sequence and execution of the plural operational modes of the apparatus during an operating cycle. The control system further includes a reel drive control circuit having plural speed and direction drive control modes programmed by the function programmer, a mode change actuator circiut responsive to cessation of film movement to actuate a change in the operational mode of the processor/projector by changing the logic state of the logic disc assembly, and a manually-actuatable replay circuit.


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Inventors: Figge, Erwin E. (Des Plaines, IL, US)
Hapke, Kenyon A. (Libertyville, IL, US)
Karalus, George C. (Arlington Heights, IL, US)
Lenell, Robert C. (Chicago, IL, US)

Application Number: 374284
Filing Date: 1973-06-28
Publication_date: 1976-03-02
Assignee: Bell & Howell Company (Chicago, IL)
Primary Class(es): 352/130 352/72
Other Classes:
US Patent Ref:
2009442Jul, 1935Foster352/124.
3771861Nov, 1973Land352/130.
3800306Mar, 1974Land352/130.

Other Refs:
Primary Examiner: Hayes, Monroe H.
Assistant Examiner:
Attorney: Olds & Cook, Ltd.