Recording sheet feeding device
US5328163A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Oct 26, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/13
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeding device having a tray on which a plurality of sheets are stacked, includes a feeder for feeding the stacked sheets through contact therewith, a separator provided downstream in the feeding direction of the feeder for separating sheets one by one from the stack of sheets and at least a pair of conveyance rollers provided downstream of the separator for conveying the separated sheet. A detector detects the size of the stacked sheets. A pressing device presses the sheets, and a contact pressure between the feeder and the sheets is adjustable. A sheet edge detector provided downstream of the separator detects an edge of each of the separated sheet, and respective drivers drive the feeder, the pressing device and the conveyance rollers. A controller controls the driver. A table in which a plurality of variable and selectable pressure forces appliable by the pressing device are set according to a detected sheet size. The controller controls the driver according to a set value of the table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.