Sheet feeding device and image forming apparatus including sheet feeding device with rear end detection portion
US7823876B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2009 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Aug 4, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1311
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeding device includes a sheet accommodating portion for accommodating a sheet stack. A sheet carrying plate carries the sheet stack and has an upstream end supported in the sheet accommodating portion for rotation. A pickup roller contacts an upper face of the sheet stack and dispatches an uppermost sheet. An elevator displaces the sheet carrying plate between a feeding position where the upper face of the sheet stack contacts the pickup roller and a separating position where the upper face of the sheet stack is separated from the pickup roller. A first warm air mechanism blows warm air toward a side of the sheet stack in the sheet accommodating portion, the side being parallel to the sheet feeding direction. A controller controls the elevator so that the sheet carrying plate is displaced between the feeding position and the separating position during a warm air blowing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.