Vacuum document feeder
US4382593A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1980 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Aug 4, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H7/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An automatic vacuum document feeder particularly adapted for feeding sheet-like documents in seriatim from a stack onto a utilization device, such as the document platen of a convenience copier. The documents are disposed in a tray. A vacuum lifter descends and lifts the topmost document along a vertical path to a position above the stack and beyond the bottom surface of a vacuum transport. The vacuum transport is disposed in a plane perpendicular to the vertical path of the vacuum lifter. The vacuum transport strips the document from the vacuum lifter and transports the document to the utilization device. The entire system is configured so that there is no relative motion occurring between the document being transported and the transport hardware. A document restraint device, including air jets and stripper fingers, coact with the stack to eliminate double feed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.