Developing apparatus

Details Developing apparatus Developing apparatus

2005-11-15

2005-11-15

Ngo, Hoang (Department: 2852)

Electrophotography

Control of electrophotography process

Control of developing

C399S286000

Reexamination Certificate

active

06965743

ABSTRACT:
A developer apparatus includes a developer carrying member, for carrying a developer to a developing portion, the developer carrying member including an electroconductive base and a resistance layer provided thereon; a developer feeding member for being supplied with a voltage to supply the developer to the developer carrying member; wherein a surface moving speed of the developer carrying member Vp [mm/sec], a resistance R1(Ω) of the developer carrying member when an electric current applied the developer carrying member is 0.04 Vp [μA], and a resistance R2(Ω) or the developer carrying member when the electric current applied to the developer carrying member is 4 Vp [μA], satisfy:in-line-formulae description="In-line Formulae" end="lead"?r1/R2<15.in-line-formulae description="In-line Formulae" end="tail"?

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