Suction type sheet feeding device
US5064183A · kind A · utility
15Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1990 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Sep 12, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H3/0833
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A suction type sheet feeding device which attracts an uppermost sheet of a sheet stack to a suction cup by a negative pressure, and transfers the attracted sheet to a predetermined position. For producing the negative pressure, a bellows or accordionlike enclosure is employed. In accordance with axial shrinkage and expansion of the bellows, the negative pressure is produced. The bellows is in fluid communication with the suction cup. Improvement is also made on a cleaning arrangement for cleaning the suction cup, and on the structure of the suction cup unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.