Electrophotographic recording apparatus with transfer voltage tr

Details Electrophotographic recording apparatus with transfer voltage tr Electrophotographic recording apparatus with transfer voltage tr

1998-08-05

1999-09-14

Pendegrass, Joan

Electrophotography

Control of electrophotography process

Control of transfer

G03G 1500, G03G 1516

Patent

active

059535563

ABSTRACT:
An electrophotographic printer improves a transfer operation. A toner image is formed on the photoconductive drum in accordance with dot data. When a print medium passes between the transfer roller and the photoconductive drum, the toner image is transferred to the print medium with the aid of Coulomb force. The controller calculates a resistance of a circuit on the basis of the transfer voltage and the transfer current, the circuit including the photoconductive drum, transfer roller, and the print medium sandwiched between the photoconductive drum and transfer roller. The controller causes the high voltage power supply circuit to output the transfer voltage having an optimum in value for the print medium in accordance with the resistance.

REFERENCES:
patent: 5682575 (1997-10-01), Komori
patent: 5722010 (1998-02-01), Okubo et al.

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