Toner supply roller applied with a.c. voltage in nonmagnetic sin

Details Toner supply roller applied with a.c. voltage in nonmagnetic sin Toner supply roller applied with a.c. voltage in nonmagnetic sin

1997-05-14

1998-10-20

Royer, William J.

Electrophotography

Control of electrophotography process

Control of developing

399149, 399281, G03G 1506

Patent

active

058261389

ABSTRACT:
A nonmagnetic single component developing device comprises a developing roller having an outer surface on which a layer of a nonmagnetic single component developer composed of nonmagnetic toner is formed, a toner supply roller arranged in rear of the developing roller and made into contact therewith, for agitating and supplying the toner, a toner regulating blade arranged above the developing roller and made into press-contact therewith, for regulating a volume of the toner. The toner supply roller is electroconductive, and is applied thereto with an a.c. voltage so as to prevent lowering of the density in the leading and trailing end parts of an image so as to obtain a uniform image characteristic.

REFERENCES:
patent: 5172169 (1992-12-01), Takashima et al.

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