Developing roller, developing device, process cartridge, and...

Details Developing roller, developing device, process cartridge, and... Developing roller, developing device, process cartridge, and...

2011-04-12

2011-04-12

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S279000, C399S280000, C399S286000, C492S028000, C492S030000, C492S031000, C492S033000, C492S034000, C492S035000, C492S036000, C492S037000

Reexamination Certificate

active

07925192

ABSTRACT:
A developing roller includes a developing sleeve and a magnet roller disposed within the developing sleeve to attract developer to an outer surface of the developing sleeve by magnetic force. The outer surface of the developing sleeve has a plurality of recesses of circular or elliptic shape in plan view regularly or irregularly arranged therein so as not to overlap.

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