Patent ID: 11971666
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A method of controlling an image forming apparatus comprising the steps of:
forming an electrostatic latent image on a photosensitive drum charged by a charging roller;
moving a developing roller, which is configured to form a developer image on a surface of the photosensitive drum by supplying thereto a developer containing toner and particles that assist transfer at a developing position facing the photosensitive drum, between a first position, which is where the developing roller contacts the photosensitive drum to supply the developer to the surface of the photosensitive drum, and a second position, which is where the developing roller is separated from the photosensitive drum so that the developer is not to be supplied to the surface of the photosensitive drum;
transferring the developer image to a transfer target;
executing an image forming operation of forming an image on the transfer target in a state where the developing roller is located at the first position and a first charging voltage is applied to the charging unit roller;
executing a first rotating operation of rotating the photosensitive drum in a state where the developing roller is located at the first position and a second charging voltage, which is smaller in absolute value than the first charging voltage, is applied to the charging roller; and
executing a second rotating operation of rotating the photosensitive drum in a state where the developing roller is located at the second position and a third charging voltage, which is smaller in absolute value than the second charging voltage, is applied to the charging roller,
wherein the step of executing the first rotating operation and the step of executing the second rotating operation is performed after the step of executing the image forming operation.