Image heating apparatus with temperature control in relation to glass transition of toner
US7792447B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2008 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Nov 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2006
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image heating apparatus for allowing a surface of a heated toner image borne on a recording material to be glossed without generating a batter in the heated toner image is provided. In an image heating apparatus (9) including heating means (11 and 12) for heating an unfixed toner image (ta) borne on a recording material (P) and pressure means (21 and 22) for pressurizing an unfixed toner image (tb) heated by the heating means to gloss a surface of the unfixed toner image, the pressure means includes: pressure force changing means (54L and 54R) for changing a pressure force when the pressure means pressurizes the unfixed toner image; temperature detecting means (51 and 52) for detecting a temperature of the pressure means; and pressurization control means (53). The pressurization control means controls the pressure changing means according to temperature information of the temperature detecting means to change the pressure force of the pressure means before the pressure means pressurizes the unfixed toner image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.