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US 10,379,463 B2Granted
Transfer unit and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsYoshimi Suzuki, Takateru Ohkubo, Kazuki Takase
Life of this patent
Estimating the term…
Abstract
A separation cam is disposed on a shaft of an opposing roller. The separation cam rotates about the shaft in response to a separation unit separating an intermediate transfer belt from a photosensitive drum, and the separation cam thereby separates a secondary transfer roller from the intermediate transfer belt.
Claims18
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image;
- a transfer belt that is movable and comes into contact with the image bearing member;
- a first contact member that comes into contact with an inner peripheral surface of the transfer belt and is configured to press the transfer belt toward the image bearing member;
- a secondary transfer member that comes into contact with an outer peripheral surface of the transfer belt and thereby forms a secondary transfer portion;
- an opposing member that is disposed at a position opposing the secondary transfer member with the transfer belt interposed therebetween;
- an urging member configured to urge the secondary transfer member toward the opposing member;
- and
- a separation unit configured to separate the transfer belt from the image bearing member by switching a pressing state of the first contact member, wherein
- the separation unit includes a rotating member that rotates about a rotation axis of the opposing member and thereby moves the secondary transfer member in a direction opposite to an urging direction of the urging member and separates the secondary transfer member from the transfer belt.
6 more elements
A transfer unit that can be mounted in, and detached from, an image forming apparatus that includes a secondary transfer member and an urging member that urges the secondary transfer member, the transfer unit comprising:
- a transfer belt that is movable;
- a contact member that comes into contact with an inner peripheral surface of the transfer belt and configured to press the transfer belt toward an image bearing member provided in the image forming apparatus;
- an opposing member that is disposed at a position opposing the secondary transfer member with the transfer belt interposed therebetween;
- and
- a separation unit configured to separate the transfer belt from the image bearing member, in a state where the transfer unit is mounted on the image forming apparatus, by switching a pressing state of the contact member, wherein
- the separation unit includes a rotating member that rotates about a rotation axis of the opposing member and thereby moves, in a direction opposite to an urging direction of the urging member, the secondary transfer member that is urged toward the opposing member by the urging member and separates the secondary transfer member from the transfer belt.
3 more elements
Dependencies are inferred from the claim text.