Document handler interdocument gap control system
US5461468A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Oct 31, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2513/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A document handling system for sequentially feeding document sheets to be imaged with a controlled minimized interdocument gap therebetween even though the sheet separator-feeder sequentially feeds the documents from the stack in the input tray with initial interdocument gap variations to a second transport path portion feeding the document sheets through the imaging station at a constant velocity. A first servo drive feeds the documents in a first path portion including the separator-feeder, and a second servo drive feeds the documents in a second path portion providing the constant velocity. A sheet edge sensor in the first path portion signals the passage of the lead or trail edge of document sheets. A servo controller connecting with the sheet edge sensor and the first servo drive automatically measures the initial interdocument gap variations and change the feeding of document sheets in the first path portion so as to automatically changes the interdocument gap to a preset desired minimum interdocument gap in the second path portion. Preferably the second servo drive has an encoder generating signals proportional to its drive and the servo controller counts these signals betwe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.