Feeder and retard rollers, and method of maximizing lifetime of rollers
US6581925B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2000 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Mar 14, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2404/563
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Sheet feed apparatus including a scuff feed for reliably transporting sheets from different types of sheet stacks and different types of sheets within the stack. The apparatus comprises a sheet feed roller and a retard device in contact with the feed roller. A nudging device, contacting a paper stack, is used to feed single or multiple sheets into the nip between the feed roller and retard device. The feed roller, retard device, and nudging device all have a surface layer of 35-28092-N-GY-A, which gives them a much longer useful lifetime. A method for maximizing the efficent use of these rollers and of testing and using these rollers is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.