Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorHideaki Hasegawa
Life of this patent
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Abstract
An image forming apparatus includes a photosensitive member, an exposure device, a detection device, a measurement device that measures a current flowing to the detection device, and a control unit that executes a detection mode in which an electrostatic latent image is formed on the photosensitive member and the measurement device detects a change in the current relative to the electrostatic latent image, wherein, in an adjustment mode, the control unit causes a potential difference between the electrostatic latent image and the detection device to be smaller as a layer thickness of the photosensitive member is more reduced.
Claims29
An image forming apparatus forming an image on a recording medium, the image forming apparatus comprising:
- a photosensitive member configured to be rotated;
- an exposure device configured to expose the photosensitive member to light to form an electrostatic latent image on the photosensitive member;
- a detection device to which a voltage is applied;
- a measurement device configured to measure a current flowing to the detection device;
- and
- a control unit configured to execute a detection mode in which an electrostatic latent image is formed on the photosensitive member and the measurement device detects a change in the current relative to the electrostatic latent image,
- wherein, in the detection mode, the control unit causes a potential difference between the electrostatic latent image and the detection device to be smaller as a layer thickness of the photosensitive member is more reduced.
An image forming apparatus forming an image on a recording medium, the image forming apparatus comprising:
- a photosensitive member configured to be rotated;
- an exposure device configured to expose the photosensitive member to light to form an electrostatic latent image on the photosensitive member;
- a detection device to which a voltage is applied;
- a measurement device configured to measure a current flowing to the detection device;
- and
- a control unit configured to execute a detection mode in which an electrostatic latent image is formed on the photosensitive member and the measurement device detects a change in the current relative to the electrostatic latent image,
- wherein an exposure power for formation of the electrostatic latent image in the detection mode is lower than an exposure power for formation of an electrostatic latent image in image formation.
Dependencies are inferred from the claim text.