Patent ID: 9217966
Filing Date: 2015-12-22
Classification: G03G

Abstract:
1. A fixing device for fixing a toner on a recording medium, comprising: a first rotatory body that is rotatable in a circumferential direction thereof; a first heater configured to heat the first rotatory body; a second rotatory body disposed opposite to the first rotatory body, the second rotatory body being rotatable, the first rotatory body and the second rotatory body providing a fixing nip therebetween where the recording medium becomes sandwiched; a temperature detection section configured to detect a temperature change in an end portion of an outer circumferential surface of the first rotatory body; and a determination section configured to determine a state of rotation of the first rotatory body based on a result of detection by the temperature detection section, wherein the end portion of the first rotatory body has at least one first region and at least one second region, the first region and the second region being arranged adjacent to each other along the circumferential direction, the first region has a first thermal conductivity, and the second region has a second thermal conductivity that is different from the first thermal conductivity.