Electrophotography – Internal machine environment – Particle or contaminant control
Patent
1997-10-17
1999-08-31
Brase, Sandra
Electrophotography
Internal machine environment
Particle or contaminant control
399176, G03G 1502, G03G 2100
Patent
active
059465298
ABSTRACT:
An image forming apparatus of the present invention includes a charging device made up of a charge roller and a roller cleaning member for cleaning the charge roller. The charge roller is held in contact with a photoconductive element and uniformly charges the element while being driven by the element. The roller cleaning member is held in contact with the charge roller in order to remove impurities from the roller. The charge roller has a resistance ranging from 1.times.10.sup.3 .OMEGA. to 1.times.10.sup.7 .OMEGA.. The cleaning device exhibits a stable charging ability over a long time of use without resorting to a mechanism for moving the charge roller into and out of contact with the photoconductive element or for moving the roller cleaning member into and out of contact with the charge roller.
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English Abstract of Japanese 2-272589 entitled "Image Forming Device", Nov. 7, 1990.
Masuda Katsumi
Muraishi Takaya
Sato Masumi
Uchida Toshiyuki
Yokoyama Masato
Brase Sandra
Chen Sophia S.
Ricoh & Company, Ltd.
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