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US 11,982,949 B2Granted
Charging member having a surface layer comprising urethane foam
AssigneeHewlett-Packard Development Company, L.P.
InventorsTaehyun Kim, Norihiro Harada, Jinmo Hong
Life of this patent
Estimating the term…
Abstract
A charging member for an image forming apparatus may include a conductive support and a surface layer on the conductive support and spaced apart from a photosensitive member. The surface layer may include a urethane foam including foam cells and having a foam structure based on the foam cells, the foam cells including open cells.
Claims15
A charging member for an image forming apparatus comprising:
- a conductive support;
- and
- a surface layer on the conductive support, the surface layer being spaced apart from a photosensitive member, the surface layer comprising a urethane foam including foam cells and having a foam structure based on the foam cells, the foam cells including open cells to increase a charging uniformity of the surface layer.
A cartridge comprising:
- a charging member;
- and
- a photosensitive member, wherein
- the charging member includes:
- a conductive support;
- and
- a surface layer on the conductive support, the surface layer comprising a urethane foam including foam cells and having a foam structure based on the foam cells, the foam cells including open cells to increase a charging uniformity of the surface layer,
- the cartridge is detachable from an image forming apparatus, and
- the charging member is spaced apart from the photosensitive member.
6 more elements
An image forming apparatus comprising:
- a charging member spaced apart from a photosensitive member, the charging member including:
- a conductive support;
- and
- a surface layer on the conductive support, the surface layer comprising a urethane foam including foam cells and having a foam structure based on the foam cells, the foam cells including open cells to increase a charging uniformity of the surface layer.
1 more element
Dependencies are inferred from the claim text.