Sheet feeding apparatus and image forming apparatus
US7980548B2 · kind B2 · utility
1Cited by
15References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2007 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Jul 3, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/09
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeding apparatus includes a sheet stacking portion for stacking thereon a sheet, a sheet feeding portion for axially supporting a sheet feeding roller, and a spring portion actable on the sheet feeding portion. The spring portion acts on the sheet feeding portion so that the sheet feeding roller is pressed against the sheet with a pressing force when a sheet stacking amount is large and so that the pressing force is decreased by canceling moment created by a weight of the sheet feeding portion when the sheet stacking amount is small.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.