Transfer belt unit and image forming apparatus using the same
US7058345B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2004 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Nov 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1661
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A transfer belt unit and image forming apparatus that achieves the reduction in size and cost of a transfer belt unit and can prevent fluctuation of the cleaning performance. The unit has a transfer belt, and a plurality of rollers around which the transfer belt 14 is laid with certain tension, wherein at least one of the rollers is a tension roller 13 for tensioning to the transfer belt; frames supporting the plurality of rollers; tensioning mechanisms which are disposed on the side faces of the frames to bias the tension roller in a belt tensioning direction; a cleaning device in contact with the transfer belt at a position opposing the tension roller; rotation preventing members which prevent the rotational torque from being transmitted to the cleaning device; and position restricting members which restrict the relative position between the cleaning device and the tension roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.