Electrophotographic developing apparatus which utilizes single-c

Details Electrophotographic developing apparatus which utilizes single-c Electrophotographic developing apparatus which utilizes single-c

1993-06-02

1996-02-27

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118651, 355246, G03G 1506

Patent

active

054953227

ABSTRACT:
An electrophotographic developing apparatus includes a photoreceptor drum supported for rotation in one direction, a rotatably supported developing roller disposed in face-to-face relation with the photoreceptor drum for supplying a single-component developing material, a rotatably supported charge transfer roller disposed on one side of the developing roll remote from the photoreceptor drum and in face-to-face relation with the developing roller for delivering the developing material onto the developing roller, a charged layer regulating member disposed around the charge transfer roller and cooperable with the charge transfer roller to regulate a charging and a layer of the developing material, and a developing hopper for accommodating the developing material to be supplied to the charge transfer member. In operation, the developing material within the hopper is carried by the charge transfer roller in the form of a charged toner layer which is subsequently delivered onto the developing roller. The toner layer on the developing layer is then deposited on an electrostatic latent image formed on the photoreceptor drum. At least one of a material for, a surface roughness of and a speed of movement of the developing roller differs from that of the charge transfer roller.

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patent: 5270782 (1993-12-01), Floyd, Jr.
patent: 5270782 (1993-12-01), Floyd, Jr.
patent: 5307126 (1994-04-01), Kurita
patent: 5324884 (1994-06-01), Honda et al.
patent: 5333040 (1994-07-01), Imamiya
patent: 5339141 (1994-08-01), Suzuki et al.

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