Vacuum platen transport plenum vacuum shutter
US5037079A · kind A · utility
22Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1990 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Mar 2, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00185
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A mechanism for shuttering of vacuum ports of a vacuum platen transport (VPT) plenum in correspondence with the size of the documents being transported from the document tray of a recirculating document handler. The shuttering mechanism is coupled to a movable side guide of the document tray and includes a flexible coiled tape mounted with respect to the vacuum plenum of the VPT and movable side guide of the document tray such that movement of the side causes the tape to seal off vacuum slots within the plenum that are not located beneath documents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.