Semiconductive rubber roller

Details Semiconductive rubber roller Semiconductive rubber roller

2011-01-11

2011-01-11

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S279000, C492S056000, C428S375000, C428S379000, C430S078000

Reexamination Certificate

active

07869749

ABSTRACT:
A semiconductive rubber roller comprising a toner-transporting portion whose outermost layer is formed essentially of vulcanized rubber containing 0.1 to 30 parts by mass of a phthalocyanine compound for 100 parts by mass of the vulcanized rubber. An electric resistance value of the semiconductive rubber roller which is measured at a temperature of 23° C. and a humidity of 55% is in a range of 103to 109Ω, when a voltage of 100V is applied thereto.

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