Jam detection method and system for an inserter
US7232122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2003 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Aug 9, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2551/20
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A document assembly system with jam detection capability. The system including an accumulation chassis having a series of pusher fingers for pushing collations of documents. Above the chassis, document feeders release documents to the chassis to form the collations. A set of horizontal photo-sensors is positioned below the document feeder at a level substantially even with the tops of the pusher fingers on the chassis. The photo-sensors detect lead and trail edges of documents traveling in the flight path from the document feeder to the chassis. The sensors generate signals representing the lead and tail edges of documents breaking the line between the photo-sensors. A controller receives the signals from the photo-sensors and compares them to an expected profile calculated as a function the parameters of operation for the chassis and feeders. An error signal is generated when the compared signals are different from the expected profile by greater than a predetermined margin of error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.