Document jam detector for copier

Details Document jam detector for copier Document jam detector for copier

B - Operations, Transporting

65

H

340/123.5, 314/3

B65H 7/14 (2006.01) B65H 7/06 (2006.01) G03G 15/00 (2006.01)

Patent

CA 1057376

ABSTRACT OF THE DISCLOSURE A circuit for detecting documents jamed at the entry to an image fixing station in a copier in- cludes a latch-controlled timer. Energization of a paper food clutch sets the latch to initiate a timing cycle. A photoelectric circuit indicates whether the trailing edge of a document being fed to the image fixing station has cleared the entry. The proper output from this circuit clears the latch and inter- rupts the timing cycle. If the timer times out before the entry is cleared, the timer output is driven to a jam-indicating state.

269955

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