Sheet feeder
US7658374B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2006 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Jan 20, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1311
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A pick roller picks a sheet stacked in a hoper and transports the sheet toward a separating section at which a separator roller and a brake roller is provided. The separator roller and the brake roller transport the sheet one by one. A first unit is provided on the brake roller and is adapted to detect a rotation of the brake roller. A second unit is provided in the separating section and is adapted to detect a speed of the sheet. A controller is operable to determine an entry state of the sheet with respect to the separator roller based on presence or absence of the sheet in the separating section determined from the speed of the sheet in the separating section and whether or not the brake roller is rotating, and to optimally control a force acting in separation for the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.