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

Claim 0:
1. 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 and an upstream roller provided upstream of and adjacent to said inner roller with respect to a rotational direction 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;
an urging member provided downstream of said upstream roller and upstream of said inner roller with respect to the rotational direction of said belt and capable of urging the inner peripheral surface of said belt;
a position changing mechanism configured to change a position of said urging member;
a storing portion configured to store setting information for setting a position of said urging member 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 urging member corresponding to a predetermined recording material.