Electrophotography – Control of electrophotography process – Control of developing
Patent
1998-11-03
1999-11-02
Beatty, Robert
Electrophotography
Control of electrophotography process
Control of developing
G03G 1510
Patent
active
059786175
ABSTRACT:
An image transferring device incorporated in an image forming apparatus and capable of surely preventing a sheet from wrapping around a photoconductive element. The image transferring device includes a transfer belt contacting an image bearing member to form a nip portion and which is supported by first and second rollers. A contact electrode connected to a power source contacts the inner surface of the belt and is located downstream of the nip for applying a transfer bias to the belt. A discharge electrode is located downstream of the contact electrode and separate from the first and second rollers for dissipating transfer charge on the belt. A controller controls the power source such that a relation: I.sub.1 -I.sub.2 =I.sub.out is satisfied, where I.sub.1 is the transfer current, 1.sub.2 is the feedback current flowing from the discharge electrode and I.sub.out is constant.
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Harasawa Yuko
Matsuda Itaru
Takano Satoshi
Beatty Robert
Ricoh & Company, Ltd.
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