Fusing device for electrostatic copier
US4243869A · kind A · utility
12Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | May 16, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2064
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fusing apparatus for an electrostatic copier has a flexible web rotatably driven between first and second pressure fixing rollers that are further supported by a rotatable, third pressure roller substantially in contact with the web and the second pressure fixing roller. Only the web is heated in an area just prior to the first pressure fixing roller. The entrapped copy sheet follows a concave path formed by the web and the first pressure fixing roller outer diameter, during which time the toner is gradually melted until it is finally pressed and fixed on the copy sheet by the first and second pressure fixing rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.