Method and apparatus for multiple sheet detection

Details Method and apparatus for multiple sheet detection Method and apparatus for multiple sheet detection

1991-06-28

1992-05-19

Schacher, Richard A.

Sheet feeding or delivering

Feeding

With means to interrupt feeding

101233, B65H 714

Patent

active

051141388

ABSTRACT:
According to a method and apparatus for multiple sheet detection for a sheet in a printing press capable of performing multiple sheet detection at a first feed operation timing which can stop feeding of the sheet to the printing press, a second feed operation timing immediately before the start of feeding of the sheet is determined. Multiple feed detection of the sheet again is performed at the determined second feed operation timing. A print stop control output is supplied to the printing press when multiple sheet feeding is detected at the determined second feed operation timing.

REFERENCES:
patent: 3875860 (1975-04-01), Barber
patent: 4420747 (1983-12-01), Kistner
patent: 4533133 (1985-08-01), Hams

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