Developing device and developing method with a specified impedan

Details Developing device and developing method with a specified impedan Developing device and developing method with a specified impedan

1999-07-06

2000-07-11

Pendegrass, Joan

Electrophotography

Image formation

Development

399276, 430122, G03G 1508

Patent

active

060885637

ABSTRACT:
In a developing device and a developing method in which a developer containing toners and carriers is conveyed to a developing area opposite to an image carrying member with it being held on the surface of a developer carrying member, and the toners in the developer are supplied to the electrostatic latent image formed on the image carrying member upon exerting an electric field between the developer carrying member and the image carrying member, to perform development, an impedance Zs (.OMEGA./cm.sup.2) per unit area of the surface of said developer carrying member and an impedance Zc (.OMEGA./cm.sup.2) of said carriers satisfy the condition of 1.8.times.10.sup.5 .ltoreq.Zs.multidot.Zc.ltoreq.2.1.times.10.sup.9.

REFERENCES:
patent: 4430410 (1984-02-01), Aizawa et al.
patent: 4746589 (1988-05-01), Haneda et al.
patent: 5688622 (1997-11-01), Ito et al.
patent: 5736287 (1998-04-01), Kobayashi et al.
patent: 5849452 (1998-12-01), Takenaka et al.
Abstract of JP 10-148972A, Jun. 2, 1998.

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