In-feed paper buckle control apparatus
US4300756A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Mar 7, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H7/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An automated sheet-feed apparatus for feeding cut sheet paper to an automated printer includes apparatus for forming a predetermined length of buckle in the sheet of paper. The sheet-feed apparatus feeds the leading edge of a sheet of paper into a nip formed by the platen and the first set of pressure feed rollers of the printer. As feeding of the sheet of paper continues, a predetermined length of buckle is formed in the buckle chamber, at which time feeding by the sheet-feed apparatus is stopped. The printer platen drive system feeds the leading edge of the sheet through the nip and to a second nip formed by a second set of pressure feed rollers and the platen before the buckle is eliminated in the sheet of paper, and while the retard force from the sheet-feed apparatus is not apparent to the printer platen drive system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.