Patent ID: 11868082
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An image forming apparatus comprising:
a first image forming portion provided with a first rotatable image bearing member, a first developing member configured to supply a first developer on a surface of the first image bearing member, and a first cleaning member configured to form a first contacting portion by contacting the first image bearing member and configured to clean the surface of the first image bearing member at the first contacting portion;
a second image forming portion provided with a second rotatable image bearing member, a second developing member configured to supply a second developer on a surface of the second image bearing member, and a second cleaning member configured to form a second contacting portion by contacting the second image bearing member and configured to clean the surface of the second image bearing member at the second contacting portion;
a first driving source configured to drive the first image bearing member;
a second driving source configured to drive the second image bearing member;
a transfer device configured to transfer an image formed with the first developer in the first image forming portion and an image formed with the second developer in the second image forming portion to a recording material;
a controller configured to control a first operation in which the image to be transferred to the recording material is formed only in the first image forming portion of the first and second image forming portions, a second operation in which the image to be transferred to the recording material is formed in the first image forming portion and the second image forming portion, and a supplying operation in which a lubricant is attached to the second image bearing member from the second developing member and the lubricant is supplied to the second contacting portion by rotation of the second image bearing member; and
an acquiring portion configured to acquire information on a time from when the first image bearing member and the second image bearing member stop after the first operation or the second operation is terminated and until a next start instruction of the first operation or the second operation is input to the controller,
wherein in a case that the time indicated by an acquired result of the acquiring portion exceeds a predetermined threshold when the start instruction of the first operation is input in a stopping state of the first image bearing member and the second image bearing member, the controller controls to execute the supplying operation during a time from when the current start instruction of the first operation is input until the next start instruction of the first operation or the second operation is input.