Photographic paper cutter with automatic paper feed in the event

Details Photographic paper cutter with automatic paper feed in the event Photographic paper cutter with automatic paper feed in the event

1978-08-24

1979-07-24

Schran, Donald R.

Cutting

Operation controlled by detector means responsive to work

Actuation of tool controlled in response to work-sensing means

83211, 83 71, B26D 534, B26D 706

Patent

active

041618998

ABSTRACT:
An automatic photographic paper cutter cuts photographic prints from a strip of photographic paper which bears cut marks indicating the locations of desired paper cuts. An automatic paper feed control allows a predetermined number of cut marks to be missing without halting the operation of the paper cutter. A total feed length for the last previous paper feed-and-cut cycle in which cut marks were sensed at both ends of the cycle is stored and continuously updated with each paper feed-and-cut cycle. If a cut mark is not sensed within a predetermined length or "window", the automatic paper feed control causes the paper to be driven the stored total feed length, stopped, and cut.

REFERENCES:
patent: 3143017 (1964-08-01), Donnell
patent: 3793915 (1974-02-01), Hujer
patent: 3811768 (1974-05-01), Zahn et al.
patent: 3868877 (1975-03-01), Shoji et al.
patent: 3933069 (1976-01-01), Tall et al.
patent: 3948125 (1976-04-01), Hujer et al.
patent: 4056024 (1977-11-01), Baert et al.

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