Method and apparatus for suppressing belt shift in an image forming apparatus
US6088558A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1999 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Mar 5, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes an endless belt, a pair of belt winding rollers that wind and rotate the endless belt, and a belt shift detecting device that detects a belt shift. The image forming apparatus further includes a roller end moving device that moves one end of one of the belt winding rollers around its other end in response to the detection of a belt shift to suppress the belt shift to a predetermined range, and a belt surface contacting device that pressure contacts the surface of the endless belt. The belt surface contacting device is mounted on a frame that supports a shaft of the belt winding roller to be moved so that its contacting condition does not change during the movement of the belt winding roller moved by the roller end moving device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.