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US 10,585,370 B2Granted
Charging member, process cartridge, and electrophotographic image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsNoboru Miyagawa, Hidekazu Matsuda
Life of this patent
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Abstract
In order to maintain the image quality of a recent high-speed electrophotographic apparatus, a charging member is provided which hardly causes charging unevenness of a photosensitive member even when vibration of the photosensitive member occurs. The charging member includes an electro-conductive support, an electro-conductive elastic layer, and a surface layer. The elastic layer contains a resin having an epichlorohydrin chain in the molecular structure and a specific flavonoid compound having two or more hydroxyl groups in the molecular structure.
Claims5
A charging member comprising:
- an electro-conductive support;
- an electro-conductive elastic layer;
- and
- a surface layer, wherein
- the electro-conductive elastic layer comprises a resin having an epichlorohydrin chain in the molecular structure, and a compound represented by formula (3)
- where R11 to R20 independently represent a member selected from the group consisting of a hydrogen atom, a hydroxyl group, and a methoxy group, and
- at least two of R11 to R20 are hydroxyl groups.
4 more elements
Dependencies are inferred from the claim text.