Patent ID: 8195056
Filing Date: 2012-06-05
Classification: G03G

Abstract:
1. A fixing apparatus comprising: a pair of rotating bodies that transports a recording medium on which an image is formed by using an image forming material, by sandwiching the recording medium; a heating section that heats at least one of the pair of rotating bodies; a moving section that moves the pair of rotating bodies between a position at which they mutually contact and a position at which they are mutually separated; a temperature detecting section that detects a surface temperature of at least one of the pair of rotating bodies without contacting the rotating bodies; and a twine generation determining section that determines whether the recording medium has twined around either one of the pair of rotating bodies based on a rate of temperature increase after a temperature decrease of the surface temperature detected by the temperature detecting section, wherein the twine generation determining section determines that the recording medium has twined around either of the pair of rotating bodies when a rate of temperature increase of the surface temperature is greater than a previously set first reference value, wherein the twine generation determining section determines whether the temperature decrease is caused by the twine of the recording medium around either one of the pair of rotating bodies, or is caused by the contact of the pair of rotating bodies, based on a rate of temperature increase.