Sheet detecting device and image forming apparatus provided with

Details Sheet detecting device and image forming apparatus provided with Sheet detecting device and image forming apparatus provided with

1999-09-24

2000-11-21

Royer, William

Electrophotography

Diagnostics

Document handling

399322, 399389, 27126501, 27126502, G03G 1500, B65H 702

Patent

active

061514586

ABSTRACT:
A sheet detecting device for contacting with a sheet being conveyed and detecting the sheet is provided with a first moving member urged and moved by the sheet being moved, N (N.gtoreq.1) interlocking members moved in operative association with the movement of the first moving member, a second moving member moved in operative association with the movement of the N interlocking members, a detection signal producing portion producing a sheet detection signal on the basis of the movement of the second moving member, first biasing member provided on the first moving member for independently biasing the moved first moving member in a direction opposite to the direction of movement thereof so as to return it to its original position, N biasing member provided on respective ones of the N interlocking members for independently biasing the moved N interlocking members in a direction opposite to the direction of movement thereof so as to return them to their original positions, and second biasing member provided on the second moving member for independently biasing the moved second moving member in a direction opposite to the direction of movement thereof so as to return it to its original position.

REFERENCES:
patent: 4699366 (1987-10-01), Kashimura et al.
patent: 4793605 (1988-12-01), Tajima
patent: 5539510 (1996-07-01), Yamashiro et al.
patent: 5913510 (1999-06-01), Kiyohara et al.
patent: 5964460 (1999-12-01), Azumi et al.

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