Sheet buckle sensing
US5166735A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1992 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Jun 5, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00556
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A sheet transport system incorporating a control for matching drive speeds imparted to a sheet extending between adjacent workstations is disclosed. The copy sheet is engaged by a receiving surface disposed between the workstations and is adhered to the receiving surface by vacuum. The copy sheet follows a path offset from a linear path extending between the workstations. Fuser rolls are driven at a slightly higher speed to tension the copy sheet and lift it from the transport surface. The lifting is detected by a sensor for sensing the vacuum in a plenum communicated with the receiving surface. The drive speed of the fuser rolls is controlled in accordance with the signal from the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.