Patent ID: 8588628

Claim:
A fixing device, comprising: a fixing member that heats a toner image on a recording medium to fix the toner image onto the recording medium; an induction heating unit that heats the fixing member by electromagnetic induction; and a pressing member that presses the fixing member to form a fixing nip portion, wherein the fixing member includes a heat insulating elastic layer and a sleeve layer, the sleeve layer being located outside the heat insulating elastic layer and provided with an outer conductive layer that generates heat from a magnetic flux generated by the induction heating unit, and the fixing device further includes a damage detection unit that is connected to the outer conductive layer to detect a change in electric resistance of the outer conductive layer for detecting damage to the fixing member, and the fixing device changes a condition of conveyance of the recording medium to the fixing nip portion if the damage detecting unit detects damage to the fixing member.