Automatic sheet-feeder
US4869488A · kind A · utility
14Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Dec 1, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0021
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to an automatic sheet-feeder for feeding a sheet from the bottom of a stack of sheets placed on a sheet tray and for circularly returning the sheet to the top of the stack. The sheet tray comprises a movable tray and a stationary tray, and the movable tray can move upward or downward in accordance with the size of the sheet, and further the movable tray comprises an intermediate sheet-feed to transport the sheet, whereby the edges of the pile of sheets are aligned in order to prevent erroneous sheet-feeding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.