Document handler jam clearance and job recovery system
US4786041A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1987 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Nov 6, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0094
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a copying system utilizing a recirculating document handler (RDH) presenting documents to the platen of a copier for copying, with an RDH document stacking tray and an additional document input directly to the platen, and a three zone distributed drives feeding system for first feeding the documents from the stacking tray to the platen, secondly feeding the documents over the platen for copying, and thirdly feeding the documents from the platen back to the stacking tray after they have been copied, to normally form a complete document recirculation path, and sensors for sensing document jams and the position of jammed documents in the document paths connecting with a control system controlling the RDH, including stopping the RDH in response to sensing a jam and determining which documents have been copied before a jam and providing instructional displays to the operator for operator jam clearance (document removal) and job recovery; an improved jam clearance and job recovery system determining whether a document has resulted in a jammed document being present in a first, second, or third document path jam zone, corresponding to the three distributed drive zones, and automaticall…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.