Automatic sheet feeder
US5727782A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Aug 26, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H3/5223
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A feed roller is disposed opposite the bottom part of a placement tray on which a stack of sheet is placed, and a resilient pressing member made of sponge etc. is provided so that it will press the separator into surface contact with the peripheral surface of the feed roller. The separator is divided into two sections for individual functions, i.e., a separating portion which lies in a front surface contact area with the feed roller and performs a separating function of sheets, and a delivering portion which lies in a surface contact area immediately after the front surface contact area and performs a delivering function of the sheet. In order to achieve these functions, the coefficient of friction in the separating portion is set greater than that in the delivering portion and it is set lower than that of the feed roller. In this way, the separation of sheets is performed reliably through the first surface contact area and the delivering of the sheet is efficiently performed through the second surface contact area. Further, the resilient pressing member will serve to inhibit the vibrations and rattling sounds of the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.