Back to results
US 8,509,631 B2Granted
Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorTadashi Fukuda
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a developing device including a developer bearing member for bearing and conveying a developer and configured to develop a latent image formed on an image bearing member using the developer, a bias application unit configured to apply at least an AC bias to the developer bearing member, an integration unit configured to integrate an application time of the AC bias applied by the bias application unit, and a determination unit configured to determine a replacement timing of the developing device based on an integrated value by the integration unit.
Claims6
An image forming apparatus comprising:
- a developing device including a developer bearing member for bearing and conveying a developer and configured to develop a latent image formed on an image bearing member using the developer;
- a bias application unit configured to apply at least an AC bias to the developer bearing member;
- an integration unit configured to integrate an application time of the AC bias applied by the bias application unit;
- and
- a determination unit configured to determine a replacement timing of the developing device based on an integrated value by the integration unit.
2 more elements
Dependencies are inferred from the claim text.