Electrophotography – Control of electrophotography process – Responsive to copy media characteristic
Patent
1997-07-01
1999-11-09
Braun, Fred L.
Electrophotography
Control of electrophotography process
Responsive to copy media characteristic
399296, G03G 1500, G03G 1516
Patent
active
059830417
ABSTRACT:
An image recording apparatus includes a rotating photosensitive drum, a developing unit, a neutralizing device, and a transferring device. An electrostatic latent image is formed on a charged surface of the rotating photosensitive drum, the electrostatic latent image being developed by a developing unit and subsequently transferred by a transferring device to a print medium. The neutralizing device neutralizes the charged surface of the photosensitive drum at the point on the surface disposed downstream of the developing unit and upstream of the transferring device with respect to rotation of the photosensitive drum. A controller controls the neutralizing device according to characteristics of the print medium such as size, material, insulation, and transparency. The neutralizing device may be operated in different modes. For example, the neutralizing device may neutralize an entirety of the charged surface of the photosensitive drum only if the print medium is of a predetermined characteristic, i.e., an insulating sheet such as a transparent OHP sheet or may neutralize only selected parts of the charged surface of the photosensitive drum according to a width of the print medium.
REFERENCES:
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patent: 4560268 (1985-12-01), Nishimura
patent: 4853736 (1989-08-01), Goto et al.
patent: 5126792 (1992-06-01), Iwata
patent: 5614998 (1997-03-01), Sanpe
patent: 5729808 (1998-03-01), Bisaiji
Fujikura Syuiti
Ida Koji
Inoue Hiroyuki
Murakami Shinichi
Ogata Shuichiro
Braun Fred L.
Oki Data Corporation
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