Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsJoji Goto, Chikara Imaizumi, Kazushi Suzuki
Life of this patent
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Abstract
In a case where a belt unit is not attached to an apparatus body, when an opening and closing member is closed against the apparatus body, a switching member cannot press a switch, and image formation operation is prohibited. In a case where the belt unit is attached to the apparatus body, when the opening and closing member is closed against the apparatus body, the switching member presses the switch, and the prohibition of the image formation is released.
Claims28
An image forming apparatus configured to form an image onto a recording material, the image forming apparatus comprising:
- a belt unit having a belt contacting the recording material;
- an opening and closing member openable and closable against an apparatus body;
- a switch configured to switch a state where image formation operation is prohibited and a state where the prohibition is released;
- and
- a switching member capable of pressing the switch, the switching member being provided on the opening and closing member,
- wherein the image formation operation prohibited state is switched by pressing the switch and releasing the pressing by the switching member, the pressing of the switch by the switching member is released and the image formation operation is prohibited when the opening and closing member is opened against the apparatus body, and the belt unit can be detached and attached to the apparatus body, and
- wherein in a case where the belt unit is not attached to the apparatus body, when the opening and closing member is closed against the apparatus body, the switching member cannot press the switch and the image formation operation is prohibited, and in a case where the belt unit is attached to the apparatus body, when the opening and closing member is closed against the apparatus body, the switching member presses the switch and the prohibition of the image formation operation is released.
An image forming apparatus configured to form an image onto a recording material, the image forming apparatus comprising:
- a belt unit having a belt contacting the recording material;
- and
- an opening and closing member openable and closable against an apparatus body,
- wherein when the opening and closing member is opened against the apparatus body, the belt unit can be detached and attached to the apparatus body, and
- wherein when the belt unit is not attached to the apparatus body, the opening and closing member is prevented from being completely closed against the apparatus body, and when the belt unit is attached to the apparatus body, the opening and closing member can be completely closed against the apparatus body.
An image forming apparatus configured to form an image onto a recording material, the image forming apparatus comprising:
- a belt unit having a belt contacting the recording material;
- an opening and closing member openable and closable against an apparatus body, wherein when the opening and closing member is opened against the apparatus body, the belt unit can be detached and attached to the apparatus body;
- and
- a regulation member configured to prevent the belt unit attached to the apparatus body from being detached from the apparatus body, the regulation member being able to move to a regulating position for preventing the belt unit from being detached from the apparatus body, and to a regulated position where the belt unit can be detached from the apparatus body,
- wherein the regulation member positioned at the regulated position prevents the opening and closing member from being closed against the apparatus body.
An image forming apparatus configured to form an image onto a recording material, the image forming apparatus comprising:
- an opening and closing member openable and closable against an apparatus body;
- and
- a moving member movably held on the opening and closing member,
- wherein the moving member includes a contact portion that can contact the apparatus body,
- wherein when the opening and closing member is opened against the apparatus body, a belt unit having a belt contacting the recording material can be detached and attached to the apparatus body,
- wherein the moving member moves relative to the opening and closing member to be able to move to a first position or a second position, and
- wherein:
- when the belt unit is not attached to the apparatus body, the moving member is positioned at the first position, and by causing the contact portion to contact the apparatus body the opening and closing member is prevented from being completely closed against the apparatus body;
- and when the belt unit is attached to the apparatus body, the moving member is positioned at the second position and the opening and closing member can be completely closed against the apparatus body.
Dependencies are inferred from the claim text.