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US 2008/0260424 A1Published application
Transfer belt unit for image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorsKazuhiro HARA, Takeru MUROFUSHI
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Abstract
In the transfer belt unit according to an embodiment of the present invention, rotation of a rear-side detection roller or a front-side detection roller rotated in contact with ribs of a transfer belt is transmitted to a steering roller via a lead screw to tilt the steering roller and control meandering of the transfer belt.
Claims20
A transfer belt unit comprising:
- a transfer belt that is rotated to travel while carrying an image;
- a first detection roller that rotates in contact with a first end in a width direction of the transfer belt;
- a second detection roller that rotates in contact with a second end opposed to the first end of the transfer belt;
- a first transmitting portion configured to transmit the rotation of the first detection roller or the second detection roller;
- and
- a steering roller that tilts according to the rotation transmitted by the first transmitting portion and changes a direction of the rotation and traveling of the transfer belt.
3 more elements
A self-steering method for a transfer belt, comprising:
- rotating a rear-side detection roller according to contact with a rear side of a transfer belt rotated to travel and rotating a front-side detection roller according to contact with a front side of the transfer belt;
- transmitting first rotation by the rear-side detection roller or second rotation by the front-side detection roller to a steering roller;
- and
- tilting the steering roller according to the transmitted first rotation or second rotation and changing a direction of the rotation and traveling of the transfer belt.
1 more element
Dependencies are inferred from the claim text.