Photocopying – Contact printing – Light boxes
Patent
1993-01-19
1994-09-27
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355308, G03G 2100
Patent
active
053511085
ABSTRACT:
A conveyor roller cleaning device is mounted on the body of an image forming apparatus for cleaning the peripheral surface of a conveyor roller rotatably mounted on the body of the apparatus. The device includes an elastic member adapted to be pressed into contact with the roller, an attaching member provided at the tip end thereof with the elastic member, a drive source for driving the roller and drive control device for controlling the drive source. The attaching member is rotatable around the base end thereof between a setting position in which the elastic member is pressed into contact with the roller and a retreat position in which the elastic member is retracted away from the roller. The attaching member is maintained at the setting position by a reaction force corresponding to the pressing-contact force of the elastic member to the roller. The drive control device is adapted such that, before paper to be conveyed reaches the roller, the roller is rotated in a predetermined direction for a predetermined period of time to produce, between the peripheral surface of the roller and the elastic member, a frictional force by which the attaching member is biased toward the setting position.
REFERENCES:
patent: 4370050 (1983-01-01), Matsui et al.
patent: 4544262 (1985-10-01), Kanemitsu et al.
patent: 4681422 (1987-07-01), Oba et al.
patent: 4878657 (1989-11-01), Ura et al.
patent: 5227843 (1993-07-01), Yamamoto et al.
patent: 5245394 (1993-09-01), Ikeda et al.
Grimley A. T.
Mita Industrial Co. Ltd.
Ramirez Nestor R.
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