Image forming apparatus
US5918087A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1997 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Jul 18, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2074
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus including a fixing roller and a pressure roller in which a temperature of the fixing roller and/or the pressure roller is changed differently depending on an operation mode. In particular, the temperature of the fixing roller and/or pressure roller of an operation of a non-full color mode is changed to a lesser degree than that of a full color mode operation. In another embodiment of the present invention, the temperature of the fixing roller is set to an appropriate value when an environment temperature sensor is not working properly, to produce high quality images. In yet another embodiment according to the present invention, the temperature of the fixing roller is set to an appropriate value, when an image forming apparatus is turned off for a predetermined period of time, to produce high quality images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.