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US 7,627,268 B2Granted
Image forming apparatus capable of providing a stable belt movement in a belt unit
AssigneeRicoh Company, Ltd.
InventorsTsutomu Katoh, Mitsuru Takahashi, Kazuchika Saeki, Kazuosa Kuma, Nobuto Yokokawa, Takeshi Fukao
Life of this patent
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Abstract
An image forming apparatus includes a belt unit having a support roller, a tension roller, a pair of side frames, a belt, and a guiding mechanism. The pair of side frames are configured to support the support roller and the tension roller. The belt extends across the support roller and the tension roller. The guiding mechanism are configured to guide the tension roller of the belt unit.
Claims11
An image forming apparatus, comprising:
- a belt unit including:
- a support roller;
- a tension roller;
- a pair of side frames configured to support the support roller and the tension roller;
- a belt extending across the support roller and the tension roller;
- and
- a bracket linked to one end of the each of the pair of side frames and configured to support the tension roller and to be integrally rotatable together with the tension roller with respect to a corresponding one of the pair of side frames.
4 more elements
An image forming apparatus, comprising:
- a belt unit including:
- two or more support rollers;
- a frame mechanism configured to support the two or more support rollers;
- a belt extended across the two or more support rollers;
- a regulation mechanism configured to regulate a position of at least one of the two or more support rollers in an axis direction, the regulation mechanism regulates the position of the at least one of the two or more support rollers in the axis direction by holding ends of the at least one of the two or more support rollers or ends of a shaft of the at least one of the two or more support rollers;
- and
- a holding device located between the regulation mechanism and the frame mechanism, the holding device configured to support the at least one support roller and be integrally rotatable therewith.
4 more elements
Dependencies are inferred from the claim text.