Fixing unit having press roller opening/closing mechanisms
US5835835A · kind A · utility
16Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1997 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Aug 5, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing unit includes a heat roller accommodating a heater and a press roller movable between an operating position in which the recording sheet is nipped by the rollers and a retracted position. A driven gear is provided to one axial end of heat roller, which engages a rotating mechanism for rotating the heat roller. An opening/closing mechanism is arranged to move a first axial end (at the same side as the driven gear of the heat roller) of said press roller to said operating position before moving a second axial end of the press roller to the operating position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.