Fixing device capable of changing smoothness of surface of toner of fixed toner image on sheet and image forming apparatus using said fixing device
US6721532B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Feb 26, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2038
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device that fixes an unfixed toner image onto a moving sheet, includes a first fixing unit that makes toner of the unfixed toner image penetrate into the sheet by heat and pressure so as to be fixed onto the sheet as a fixed toner image, and a second fixing unit arranged downstream of the first fixing unit in a sheet moving direction to contact and press the fixed toner image on the sheet to change smoothness of a surface of the toner of the fixed toner image on the sheet. The second fixing unit is arranged at a position where a temperature of the toner of the fixed toner image on the sheet is greater than a glass transition temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.