Photocopying – Contact printing – Light boxes
Patent
1991-10-28
1993-04-13
Grimley, A. T.
Photocopying
Contact printing
Light boxes
118657, 118661, G03G 1509
Patent
active
052027295
ABSTRACT:
A developing apparatus having a container for containing a one component developer, and a rotatable developing roller disposed facing an image bearing member to carry developer from the container to a development zone where it is supplied to an electrostatic latent image carried on an image bearing member. The developing roller includes a metal base member and a resin coating layer thereon in which fine conductive particles are dispersed. The developing roller has a surface including an end region adjacent an end of the roller, and an intermediate region. In the end region, the base member is not roughened and the resin layer is not provided. In the intermediate region, inside the end region, the base member is roughened and is coated with the resin layer. A sealing member is provided for preventing leakage of the developer from the container at the end of the developing roller, the sealing member being faced to the end region of the developing roller.
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Hasegawa Hiroto
Ishiyama Tatsunori
Kugoh Harumi
Miyamoto Toshio
Nanataki Hideo
Brase Sandra L.
Canon Kabushiki Kaisha
Grimley A. T.
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