| 发明名称 | Rotary endless belt unit for use in an image forming apparatus and image forming apparatus having same | ||
| 摘要 | A belt unit includes an endless belt, a tension roller, at least one extension roller, a first bearing portion supporting a first end of the tension roller such that the first end is movable in a tension direction and is detachably mounted to be able to release the tension force by the first end coming off from the first bearing portion, a second bearing portion supporting a second end of the tension roller to be movable in the tension direction, a first urging portion urging the first end of the tension roller, a second urging portion urging the second end of the tension roller, a first frame portion integrally supporting the first bearing portion, the first urging portion, and the extension roller, and a second frame portion integrally supporting the second bearing portion, the second urging portion, and the tension roller and detachably mounted on the first frame portion. | ||
| 申请公布号 | US9195178(B2) | 申请公布日期 | 2015.11.24 |
| 申请号 | US201414323257 | 申请日期 | 2014.07.03 |
| 申请人 | CANON KABUSHIKI KAISHA | 发明人 | Kosasa Hideaki |
| 分类号 | G03G15/16 | 主分类号 | G03G15/16 |
| 代理机构 | Fitzpatrick, Cella, Harper & Scinto | 代理人 | Fitzpatrick, Cella, Harper & Scinto |
| 主权项 | 1. A belt unit comprising: a rotary endless belt; a tension roller extending the endless belt and applying a tension force to the endless belt; at least one extension roller extending the endless belt with the tension roller; a first bearing portion supporting a first end of the tension roller such that the first end is movable in a tension direction and is detachably mounted to be able to release the tension force by the first end coming off from the first bearing portion; a second bearing portion supporting a second end of the tension roller to be movable in the tension direction; a first urging portion urging the first end of the tension roller and generating the tension force; a second urging portion urging the second end of the tension roller and generating the tension force; a first frame portion integrally supporting the first bearing portion, the first urging portion, and the extension roller; and a second frame portion integrally supporting the second bearing portion, the second urging portion, and the tension roller and detachably mounted on the first frame portion. | ||
| 地址 | Tokyo JP | ||