Fixing device and image forming apparatus comprising the same
US8498562B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 2009 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Jul 28, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a fixing device that uses an induction heating method and is capable of shortening a warm-up time period by accelerating the speed of increase in the temperature of a fixing belt. The fixing device forms a fixing nip by having a pressurizing roller pressurize a fixing roller, which is positioned inside a rotation path of a fixing belt having a hollow cylindrical shape, from outside the rotation path via the fixing belt. Given that Db is an inner diameter of the fixing belt, Dr is an outer diameter of the fixing roller, and a rate X is a value obtained by dividing the inner diameter Db of the fixing belt by the outer diameter Dr of the fixing roller, the fixing belt and the fixing roller that satisfy a relationship 0<X≦1.18 are used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.