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US 9,075,333 B2Granted
Charging member, process cartridge, and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsAtsushi Uematsu, Tomohito Taniguchi, Taichi Sato
Life of this patent
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Abstract
Provided is a charging member for suppressing the vibration of a charging roller which occurs owing to a difference in circumferential speed in a longitudinal direction when the roller is rotated to follow a photosensitive member, and suppressing a banding image caused by the vibration of the charging roller over a long period of time. The charging member includes a substrate and an elastic layer. The elastic layer contains a rubber having a polar group and hollow particles each having a shell containing a crystal of calcium carbonate.
Claims10
A charging member, comprising:
- a substrate;
- and
- an elastic layer,
- wherein the elastic layer contains
- a rubber having a polar group and
- a hollow particle having a shell containing a crystal of calcium carbonate.
3 more elements
Dependencies are inferred from the claim text.