Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorTomoya Inuzuka
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes an image bearing member, an image forming portion, an endless belt, a plurality of stretching rollers including an inner roller, an outer roller, a position changing mechanism capable of changing a position of the inner roller to a first position and a second position positioned downstream of the first position with respect to a rotational direction of the endless belt, a feeding member, a feeding member driving portion, and a controller. A feeding start timing of a recording material by the feeding member depends on the position of the inner roller during transfer of a toner image onto the recording material.
Claims10
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image;
- an image forming portion configured to form the toner image on said image bearing member;
- an endless belt onto which the toner image formed on said image bearing member is transferred at a primary transfer portion;
- a plurality of stretching rollers including an inner roller and configured to stretch said endless belt;
- an outer roller configured to form a secondary transfer portion, in cooperation with said inner roller, where the toner image is transferred from said endless belt onto a recording material;
- a position changing mechanism configured to change a position of the secondary transfer portion with respect to a circumferential direction of said inner roller by moving said inner roller,
- wherein said position changing mechanism is capable of changing a position of said inner roller to a plurality of positions including a first position and a second position positioned downstream of the first position with respect to a rotational direction of said endless belt;
- a feeding member configured to feed the recording material to the secondary transfer portion;
- a feeding member driving portion configured to drive said feeding member;
- and
- a controller configured to control a feeding start timing of the recording material by said feeding member,
- wherein the feeding start timing of the recording material by said feeding member depends on the position of said inner roller during transfer of the toner image onto the recording material.
Dependencies are inferred from the claim text.