Sheet stacking device and sheet processing device, and image forming apparatus provided therewith
US7703758B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Apr 5, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2515/81
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A bundle discharge roller pair is made to rotate backward in a holding state in which the sheets are held between the bundle discharge roller pair, and, at the same time, the upper bundle discharge roller of the pair is separated from the lower bundle discharge roller of the pair. The released sheets slide down on the inclined processing tray at a return velocity Vb; and are made to run into the rear end stopper for aligning. The return velocity Vb may be controlled according to the reverse-rotational speed of the bundle discharge roller pair and is set at a low velocity, when it is found that, for example, the size of the sheet is large, and the return velocity Vb is increased in the case of coated paper with a large coefficient of friction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.