Image forming apparatus with toner image fixing unit, and the fixing method thereof
US7738827B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2005 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Oct 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The fixing unit satisfies following three conditions. That is, (1) 2.4×103×d/(TC×t)<T0, where d is a thickness of the unfixed toner layer in meters, TC is a thermal conductivity of toner in W/mK, and t is the fixing time in seconds; (2) a temperature Ttop of a topmost layer of the toner layer is not greater than the minimum temperature TOFF at which the hot offset of the surface of the first fixing member occurs when the fixing time is set to 1 seconds; and (3) a temperature Tbot of a bottommost layer of the toner layer that is in contact with the recording medium is not less than the lower limit temperature TMIN for fixing of the surface of the first fixing member when the fixing time is set to 1 second.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.