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US 9,632,444 B2Granted
Charging unit
AssigneeFuji Xerox Co., Ltd.
InventorsMikio Yamaguchi, Yosuke Ninomiya, Tomoya Oki, Hiroshi Nishikawa
Life of this patent
Estimating the term…
Abstract
A charging unit includes: a charging member that contacts with an image holding body holding an image and charges a surface of the image holding body; a support member that supports the charging member; and a pressing member that has plural springs that expand and contract in a direction from the support member to the image holding body, and pushes the support member toward the image holding body, and at least two of the plural springs of the pressing member are formed by a single metal wire.
Claims14
A charging unit comprising:
- a charging member that contacts with an image holding body holding an image and charges a surface of the image holding body;
- a support member that supports the charging member;
- and
- a pressing member that has plural springs that expand and contract in a direction from the support member to the image holding body, and pushes the support member toward the image holding body, wherein:
- at least two of the plural springs of the pressing member are formed by a single metal wire.
2 more elements
A charging unit comprising:
- plural charging members that charge an image holding body that holds an image while being rotated in a state that the plural charging members are simultaneously in contact with a surface of the image holding body;
- and
- a cleaning member that cleans respective surfaces of the plural charging members while being rotated following at least one of the plural charging members in a state that the cleaning member is simultaneously in contact with the plural charging members.
A charging unit comprising:
- a first charging member that contacts with a surface of an image holding body rotating and holding an image and charges the image holding body;
- and
- a second charging member that contacts with the surface of the image holding body and charges the image holding body at a position downstream of the first charging member in a movement direction of the image holding body, and is lower in surface roughness than the first charging member, wherein
- the first charging member comprises a charging layer in which a conductive elastic layer and a surface layer are stacked,
- the second charging member comprises a charging layer in which a conductive elastic layer and a surface layer are stacked, and
- a surface roughness of the surface layer of the second charging member is lower than a surface roughness of the surface layer of the first charging member.
3 more elements
Dependencies are inferred from the claim text.