Developing roller

Details Developing roller Developing roller

2011-08-30

2011-08-30

Omgba, Essama (Department: 3726)

Roll or roller

Concentric layered annulus

Specific composition

C492S053000, C492S049000, C492S048000

Reexamination Certificate

active

08007426

ABSTRACT:
A developing roller that can form a toner image with high quality includes: a supporting shaft, and at least one resin layer formed on a peripheral face of the supporting shaft, the resin layer containing carbon black in which a number average Feret's diameter is in a range from 5 to 300 nm and primary particles account for 5% or more on a number basis, and the carbon black being dispersed in a base resin material thereof.

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