Electrophotography – Control of electrophotography process – Control of transfer
Patent
1999-09-08
2000-11-21
Chen, Sophia S.
Electrophotography
Control of electrophotography process
Control of transfer
399 45, 399101, G03G 1516
Patent
active
061514616
ABSTRACT:
A facsimile device includes an electrophotographic photosensitive body on which a toner image is formed and capable of being brought into contact with a sheet of paper for recording the toner image on the sheet of paper based on received data and a paper feeding device for conveying sheets of paper via a paper feeding system to a transfer position. An image transferring device is provided at the transfer position for transferring a toner image to the sheets of paper conveyed to the transfer position by the paper feeding system at a nip portion formed between the electrophotographic photosensitive body and the sheet of paper. A registration roller controls a timing at which the sheet of paper is conveyed to the transfer position. A pre-registration sensor detects the sheet of paper, conveyed by the paper feeding device, at an upstream side of the registration roller. A controller controls at least one of a voltage level and a transfer current level of the image transferring device based on an output by the pre-registration sensor.
REFERENCES:
patent: 5713063 (1998-01-01), Oono
patent: 5822649 (1998-10-01), Karashima et al.
patent: 5828927 (1998-10-01), Yoo et al.
patent: 5848321 (1998-12-01), Roh et al.
Satoh, deceased Fumio
Satoh, legal representative by Hiroyuki
Chen Sophia S.
Ricoh & Company, Ltd.
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