Pressure-sensitive and electrically-conductive roller

Details Pressure-sensitive and electrically-conductive roller Pressure-sensitive and electrically-conductive roller

1994-03-21

1995-10-17

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

Separator and conveyor

271263, 271272, 27126504, 324699, 324701, 492 10, 492 11, B65H 500, B65H 712

Patent

active

054583241

ABSTRACT:
It is an object of this invention to allow detection of multiple paper-conveying of an original sheet in image reading or forming operation and facilitate a recovery operation. An automatic original feeding apparatus of this invention uses pressure sensitive conductive rubber in a feeding roller, and changes in length and thickness of a sheet are changed into electrical signals, so that the conveyed state such as multiple paper-conveying of the sheet can be detected.

REFERENCES:
patent: 2849916 (1958-09-01), Nolan
patent: 3182301 (1965-05-01), Kolb
patent: 3600591 (1971-08-01), Thier
patent: 3744047 (1973-07-01), Allen
patent: 4462587 (1984-07-01), Graef et al.
patent: 5029837 (1991-07-01), Uchiyama
patent: 5031896 (1991-07-01), Winkler
patent: 5174562 (1992-12-01), Mizunaga et al.
patent: 5222157 (1993-06-01), Yoneda et al.
patent: 5238123 (1993-08-01), Tovini et al.

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