Sheet feeding apparatus
US5893555A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1996 |
| Grant date | Apr 13, 1999 |
| Priority date | — |
| Expiry date | Mar 19, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2551/14
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeding apparatus includes: a sheet feeding table on which sheets are stacked, the sheet feeding table being vertically movable; a sheet feeding roller mechanism provided in a vertical movement path of the sheet feeding table, the sheet feeding roller mechanism having a roller for feeding the sheets from the sheet feeding table one at a time, the roller being vertically displaceable; a spring for urging the sheet feeding roller mechanism in a direction of downward movement of the sheet feeding table; a detector for detecting when, during the upward movement of the sheet feeding table, the sheet feeding roller mechanism is lifted to a predetermined position against the spring, to stop the upward movement of the sheet feeding table; and a movable member movable and lockable for operating a change-over mechanism for changing the raised position of the sheet feeding roller mechanism which is obtained when the sheet feeding roller mechanism is detected by the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.