Developer apparatus, image forming apparatus and developing...

Details Developer apparatus, image forming apparatus and developing... Developer apparatus, image forming apparatus and developing...

2008-10-15

2011-10-04

Gray, David (Department: 2852)

Electrophotography

Image formation

Development

C399S254000

Reexamination Certificate

active

08032064

ABSTRACT:
A developer apparatus, includes: a container which houses toner; a toner carrier roller that is provided, on a surface thereof, with a plurality of convex sections which are regularly arranged and a concave section which surrounds the convex sections, is shaped approximately like a cylinder, and rotates while carrying a toner layer of charged toner supplied from the container on the surface thereof, and a restriction member that abuts on the surface of the toner carrier roller to form a restriction nip, restricts a thickness of the toner layer carried on the surface of the toner carrier roller in the restriction nip, and removes the toner layer on the convex sections from among the toner layer carried on the surface of the toner carrier roller at an upstream-side end of the restriction nip in a rotation direction of the toner carrier roller.

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