Apparatus discriminating the transport condition of a recording medium through a fixing device based on temperature of a fixing roller
US5848319A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Aug 26, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00548
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus and a fixing device used therein capable of discriminating transport condition of a sheet in the fixing device without sheet sensors. The fixing device is provided with a fixing roller for heating unfixed toner borne on a sheet and fixing the toner onto the sheet. A temperature sensor is arranged for detecting the temperature of the fixing roller, which temperature sensor communicating with a controller of the image forming apparatus or the fixing device. The controller discriminates the transport condition of the sheet based on the temperature change of the fixing roller detected by the temperature sensor so as to execute varied control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.