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US 2004/0165900 A1Published application
Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorKoji Arimura
Life of this patent
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Abstract
An image forming apparatus includes a charging unit for charging an image bearing member, an image forming unit for forming a toner image on the image bearing member that has been charged, and a cleaning unit for contacting the image bearing member to clean the surface of the image bearing member. In the apparatus, a ratio of a period wherein the image bearing member is moved without being charged to a period wherein the image bearing member is moved while being charged, is controlled to be a predetermined value or greater.
Claims5
An image forming apparatus comprising:
- charging means for charging an image bearing member;
- image forming means for forming a toner image on the image bearing member that has been charged;
- cleaning means for contacting the image bearing member to clean the surface of the image bearing member;
- and
- control means adapted to control a ratio of a period wherein the image bearing member is moved without being charged by the charging unit, to a period wherein the image bearing member is moved while being charged by the charging unit, to be a predetermined value or greater.
2 more elements
Dependencies are inferred from the claim text.