Photocopying – Contact printing – Light boxes
Patent
1989-02-09
1990-09-11
Prescott, A. C.
Photocopying
Contact printing
Light boxes
355301, 118652, 430125, G03G 1500, G03G 1508, G03G 2100
Patent
active
049566776
ABSTRACT:
Disclosed is a cleaning system for an image forming apparatus wherein the cleaning performance thereof will not be deteriorated by, will be substantially free from a change of the environment therearound and damage to a photosensitive member of the image forming apparatus is minimized in order to improve the life of the photosensitive member. The cleaning system comprises a conductive cleaning brush for slidably contacting with the photosensitive member to remove toner powder remaining on the photosensitive member. Toner powder remaining on the photosensitive member after transfer of a visible toner powder image therefrom is first charged to a fixed polarity, using a DC corona discharge or the like and then the photosensitive member is slidably contacted by the conductive cleaning brush to which a bias voltage of the polarity opposite to the polarity of the charge on the toner powder is applied so that the remaining toner powder is mechanically and electrostatically removed from the photosensitive member by the conductive cleaning brush.
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patent: 4185910 (1980-01-01), Nomura et al.
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patent: 4660962 (1987-04-01), Maekawa et al.
patent: 4755853 (1988-07-01), Shimizu et al.
patent: 4819026 (1989-04-01), Lange et al.
IBM Technical Disclosure Bulletin, vol. 30, No. 3, Aug. 1987 (New York), "Three-Stage Preclean Treatment", pp. 1250-1252, See FIGS. 1 and 2.
Alps Electric Co. ,Ltd.
Prescott A. C.
Shoup Guy W.
Winters Paul J.
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