Image forming apparatus with shifting means to position image transfer unit
AssigneeCanon Kabushiki Kaisha
InventorTakao Sameshima
Life of this patent
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Abstract
An image forming apparatus has a first unit with an image bearing member for bearing an image, a second unit having a transfer device for transferring the image on the image bearing member onto a transfer material, the second unit being rockable around a rock center to engage with and disengage from the first unit and having a positioning portion to be positioned at a predetermined position of the first unit, and a shifter for permitting a shifting movement of the rock center so that the positioning portion is positioned at the predetermined position even when a relative position of the first unit with respect to an apparatus body of the image forming apparatus is changed.
Claims25
An image forming apparatus comprising:
- a first unit having an image bearing member for bearing an image;
- a second unit having a transfer means for transferring the image on said image bearing member onto a transfer material, said second unit being rockable around a rock center to engage with and disengage from said first unit and having a positioning portion to be positioned at a predetermined position of said first unit;
- and
- shift means for permitting a shifting movement of the rock center so that said positioning portion on said second unit is positioned at the predetermined position on said first unit even when a relative position of said first unit with respect to a main body of the image forming apparatus in a conveying direction of the transfer material is changed.
An image forming apparatus comprising:
- an image bearing member for bearing an image;
- a first unit having an intermediate transfer member to which the image on said image bearing member is transferred;
- a second unit having a transfer means for transferring the image on said intermediate transfer member onto a transfer material, said second unit being rockable around a rock center to engage with and disengage from said first unit and having a positioning portion to be positioned at a predetermined position on said first unit;
- and
- shift means for permitting a shifting movement of said rock center so that said positioning portion on said second unit is positioned at the predetermined position of said first unit even when a relative position of said first unit with respect to a main body of the image forming apparatus in a conveying direction of the transfer material is changed.
Dependencies are inferred from the claim text.