Sheet feeder and image forming apparatus using the same
US8585040B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2012 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Mar 7, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2515/81
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeder includes a loading member, an attraction separation unit, and a control device. The loading member carries sheet materials. The attraction separation unit includes an endless dielectric belt, holding rollers, and an adjustment device. The endless belt attracts and holds the uppermost one of the sheet materials. The holding rollers holding the endless belt include upstream and downstream holding rollers. The upstream holding roller is rotated around a shaft of the downstream holding roller as the rotation axis in accordance with rotation of the downstream holding roller. The adjustment device provided to the upstream holding roller adjusts the movement range of the upstream holding roller in the height direction. The control device controls, in accordance with the type of sheet materials, an operation of lifting and lowering the loading member, to thereby allow the adjustment device to adjust the movement range of the upstream holding roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.