Sheet feeder and image forming apparatus incorporating same
US8480073B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2011 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Dec 21, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2405/11162
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeder includes: an attracting and separating device disposed above a leading end portion in a sheet-feeding direction of a sheet stack, attracting and holding an uppermost sheet of the sheet stack with electrostatic force and separating the uppermost sheet from the sheet stack, a sheet loading device carrying the sheet stack, and including a first bottom plate carrying a rear-side portion of the sheet stack and a second bottom plate separated from the first bottom plate and carrying the leading end portion of the sheet stack below the attracting and separating device; and a lifting device lifting and lowering the sheet loading device, and including a first lifting device lifting and lowering the first bottom plate and a second lifting device lifting and lowering the second bottom plate to move the leading end portion of the sheet stack toward and away from the attracting and separating device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.