Image forming apparatus for automatically releasing pressure applied to a fixing nip portion
US9471017B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2015 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Oct 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/1685
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus according to the present invention can switch a fixing nip portion between a pressurized state and a pressure released state by rotating a cam via a first engagement portion provided in a fixing unit, and a second engagement portion provided in a main body of the image forming apparatus, in which a difference between a phase of the cam in the pressurized state and a phase of the cam in the pressure released state is 180°, and the first engagement portion and the second engagement portion engage with each other when the fixing unit is mounted on the main body regardless of whether the fixing nip portion is in the pressurized state or the pressure released state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.