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

Claim 9:
10. An image forming apparatus comprising:
an image forming portion configured to form a toner image on an image bearing member;
a belt onto which the toner image is transferred from the image bearing member;
a plurality of stretching rollers including an inner roller contacting an inner peripheral surface of said belt, said stretching rollers being configured to stretch said belt;
an outer member configured to form a transfer nip, where the toner image is transferred from said belt onto a recording material, in cooperation with said inner roller, said outer member being in contact with an outer peripheral surface of said belt;
a position changing mechanism configured to change a position of the transfer nip with respect to a circumferential direction of said inner roller by moving said inner roller;
a storing portion configured to store setting information for setting a position of said inner roller corresponding to a kind of a recording material;
a controller configured to control said position changing mechanism on the basis of the kind of the recording material on which the image is formed and the setting information stored in said storing portion; and
an operating portion configured to allow manual input of an instruction to change the position of said inner roller corresponding to the predetermined recording material.