Electrophotography – Image formation – Transfer
Patent
1995-06-02
1997-09-09
Beatty, Robert
Electrophotography
Image formation
Transfer
399 66, G03G 1516
Patent
active
056666225
ABSTRACT:
The apparatus includes a photoconductive element and a transfer belt, with an electrode or bias applicator located downstream from a nip formed between the photoconductive element and the transfer belt. Upstream from the nip, a roller is provided which can also act as an electrode, or which can be held in an electrically floating state. A bias voltage can be provided to the roller upstream from the nip, with the voltage equal to or less than the voltage applied to the downstream electrode so as form a potential gradient. In addition, the applied voltages can be varied based upon the position of a sheet of paper, or in response to changes in humidity.
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Bisaiji Takashi
Harasawa Yuko
Kamiyama Hideki
Kawaishi Yasunori
Matsuda Itaru
Beatty Robert
Ricoh & Company, Ltd.
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