Patent ID: 11960221
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. An image forming apparatus comprising:
an image bearing member configured to bear a toner image;
a transfer member configured to form a transfer portion between said transfer member and said image bearing member, the toner image being transferred from said image bearing member at the transfer portion;
a position changing mechanism configured to change a position of the transfer portion with respect to a circumferential direction of said image bearing member by moving said transfer member;
a receiving portion configured to receive information on a kind of a recording material on which an image is formed;
a controller configured to control an image forming operation based on the information received by said receiving portion; and
an operating portion configured to allow manual input of an instruction,
wherein said controller is configured to be capable of selectively executing the image forming operation in a first mode and a second mode,
in the first mode, the position of the transfer portion with respect to the circumferential direction of said image bearing member being changed to any one of a plurality of positions including a first position and a second position based on the information received by said receiving portion, and
in the second mode, the position of the transfer portion with respect to the circumferential direction of said image bearing member being changed to a position based on the instruction manually inputted through said operating portion regardless of the information received by said receiving portion.