Paper pressing force controller for a printer
US6002891A · kind A · utility
13Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Jul 15, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1614
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A paper pressing force controller of a printer includes a pressing roller that contacts a transfer roller for receiving a paper sheet therebetween. Guide rollers supply the paper sheet between the transfer roller and the pressing roller and a pressure sensing unit senses the pressure variations according to the thickness variations of the paper sheet supplied between the guide rollers. A pressure changing unit controls a pressing force of the pressing roller against the paper sheet by moving the pressing roller vertically with respect to the transfer roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.