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US 2020/0004194 A1Published application
Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsBunro Noguchi, Taku Watanabe, Yusaku Iwasawa, Yuichiro Hirata
Life of this patent
Estimating the term…
Abstract
An image forming apparatus including a holding apparatus configured to collect residual developer remaining on an intermediate transfer belt and temporarily hold the residual developer, and a cleaning member configured to remove toner borne on the photosensitive drum that moves the toner held by the holding apparatus to the intermediate transfer belt and discharging the toner. Toner from a development roller is supplied to the cleaning member before toner reversely transferred from the intermediate transfer belt is supplied to the cleaning member.
Claims20
An image forming apparatus comprising:
- a developer bearing member configured to bear developer containing additive particles;
- an image bearing member configured to develop the developer from the developer bearing member;
- an intermediate transfer member;
- a transfer member configured to be applied with a transfer bias for transferring a developer image developed on the image bearing member onto the intermediate transfer member;
- a holding apparatus configured to, after the developer image transferred on the intermediate transfer member has been transferred onto a recording material, collect residual developer remaining on the intermediate transfer member and temporarily hold the residual developer, and
- a cleaning member configured to, while in contact with the image bearing member, remove the developer borne by the image bearing member,
- wherein, in the image forming apparatus that performs operations for moving first developer held by the holding apparatus to the intermediate transfer member and then reversely transferring the first developer from the intermediate transfer member to the image bearing member, the developer bearing member supplies second developer to the image bearing member such that the developer from the developer bearing member is supplied to the cleaning member before the developer reversely transferred is supplied to the cleaning member.
4 more elements
An image forming apparatus, comprising:
- a developer bearing member configured to bear developer containing additive particles;
- an image bearing member configured to develop the developer from the developer bearing member,
- an intermediate transfer member;
- a transfer member configured to be applied with a transfer bias for transferring a developer image developed on the image bearing member onto the intermediate transfer member;
- a holding apparatus configured to, after the developer image transferred on the intermediate transfer member has been transferred onto a recording material, collect residual developer remaining on the intermediate transfer member and temporarily hold the residual developer, and
- a cleaning member configured to, while in contact with the image bearing member, remove the developer borne by the image bearing member,
- wherein, the image forming apparatus that moves first developer held by the holding apparatus and second developer held by the developer bearing member to the cleaning member includes a control unit configured to control the image forming apparatus to selectively execute:
- a first control mode for moving the first developer held by the holding apparatus to the cleaning member;
- and
- a second control mode for moving a larger amount of the first developer or the first developer having a larger charge amount than the first developer in the first control mode, to the cleaning member,
- wherein, during execution of the second control mode, the control unit performs control to supply a larger amount of the second developer from the developer bearing member to the cleaning member.
8 more elements
An image forming apparatus comprising:
- a developer bearing member configured to bear developer containing additive particles;
- an image bearing member configured to develop the developer from the developer bearing member;
- an intermediate transfer member;
- a transfer member configured to be applied with a transfer bias for transferring a developer image developed on the image bearing member onto the intermediate transfer member;
- a holding apparatus configured to, after the developer image transferred on the intermediate transfer member has been transferred onto a recording material, collect residual developer remaining on the intermediate transfer member and temporarily hold the residual developer, and
- a cleaning member configured to, while in contact with the image bearing member, remove the developer borne by the image bearing member,
- wherein, the image forming apparatus that moves first developer held by the holding apparatus and second developer held by the developer bearing member to the cleaning member is provided with:
- a control mode for moving the first developer held by the holding apparatus to the cleaning member;
- and
- a simultaneous collection control mode for simultaneously supplying the first and second developers to the cleaning member with the second developer developed on the image bearing member at a timing when at least the first developer is transferred to the image bearing member.
7 more elements
Dependencies are inferred from the claim text.