Active gap controlled feeder
US6655677B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jul 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2513/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A document feeder includes advance, separation, and transport rollers for driving checks in turn along a feedpath from an input tray containing a stack of the checks A sensor is disposed between the separation and transport rollers for detecting presence of the checks therebetween. A controller is joined to the rollers for controlling speed thereof, and is operatively joined to the sensor for measuring intercheck gaps between the separation and transport rollers. The controller actively adjusts the intercheck gaps by temporarily changing speed of the separation roller at the beginning of the feedpath near the input tray. The intercheck gaps are measured and corrected between the separation and transport rollers for precise control thereof while maximizing throughput.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.