Belt conveying device, image forming apparatus provided therewith and adjustment method of belt skew controller in belt conveyance device
US7416074B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2007 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Aug 8, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00156
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A belt conveying device includes: at least three rollers, about which an endless belt to convey an object, is entrained, including an oscillation roller having a rotation shaft, whose one end is fixed and another end is oscillatably supported; a belt detection sensor provided adjacent to a side edge of the belt, which detects presence of the belt; and a belt skew controller which controls the oscillator to oscillate the oscillation roller according to a preset control value in a predetermined range to correct skew. The oscillator moves a rotation center of a movable edge of the oscillation roller along a tangential line of an ellipse having elliptical focuses corresponding to rotation centers of rotation shafts of the two rollers, other than the oscillation roller, positioned respectively in upstream and downstream of and adjacent to the oscillation roller in a belt conveyance direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.