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US 6,640,072 B2Granted
Image forming apparatus including an image bearing member and a charging member featuring a controlled peripheral velocity difference therebetween during charging
AssigneeCanon Kabushiki Kaisha
InventorRyo Inoue
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes an image bearing member, a charging member, disposed so as to be contactable with the image bearing member, for charging the image bearing member with a peripheral velocity difference between the charging member and the image bearing member, and a controller for variably controlling the peripheral velocity difference at the time when an area which becomes an image forming area of the image bearing member is charged by the charge member.
Claims42
An image forming apparatus comprising:
- an image bearing member;
- a charging member, disposed so as to be contactable with said image bearing member, for charging said image bearing member with a peripheral velocity difference between said charging member and said image bearing member;
- and
- controlling means for variably controlling the peripheral velocity difference at a time when an area which becomes an image forming area of said image bearing member is charging by said member.
1 more element
An image forming apparatus comprising:
- an image bearing member;
- a charging member, disposed so as to be contactable with said image bearing member, for charging said image bearing member with a peripheral velocity difference between said charging member and said image bearing member;
- and
- controlling means for variably controlling the peripheral velocity difference based on a current flowing between said image bearing member and said charging member.
1 more element
An image forming apparatus comprising:
- an image bearing member;
- a charging member, disposed so as to be contactable with said image bearing member, for charging said image bearing member with a peripheral velocity difference between the charging member and said image bearing member;
- electrostatic image forming means for forming an electrostatic image in response to an image signal on said image bearing member charged by said charging member;
- and
- controlling means for variably controlling the peripheral velocity difference based on an integrated value of the image signal.
2 more elements
Dependencies are inferred from the claim text.