Patent ID: 8909075
Filing Date: 2014-12-09
Classification: G03G

Abstract:
1. A fixing device for performing a thermal fixing for fixing an unfixed image onto a recording sheet by passing the recording sheet through a fixing nip formed by a fixing rotator and a pressing member pressing the fixing rotator, the fixing device comprising: a paper dust amount obtaining unit configured to obtain a value indicating an amount of paper dust attached to the fixing rotator; a heater for heating the fixing rotator; an ON/OFF switch for turning the heater on and off; and a heat supply controller configured to, when the amount of paper dust indicated by the obtained value is equal to or larger than a permissible amount, perform a control of the ON/OFF switch so that a larger amount of heat is supplied to the recording sheet in the thermal fixing than when the amount of paper dust indicated by the obtained value is smaller than the permissible amount.