Fixing device preventable unevenness of heat generation of paper passing region

A fixing device (13) includes a heating member (21), a pressing member (23), and an induction heating unit (25). In the fixing device (13), (i) a wound width Wc of a center portion of an induction heating coil (29) in a longitudinal direction seen from an axial direction of the heating member (21), (ii) a wound width Wp in the vicinity of edges of a maximum recoding medium passing region (R) of a recoding medium, and (iii) a wound width We of at least one of both edges of the induction heating coil (28) in the longitudinal direction satisfy that the wound width Wc is smaller than the wound width Wp and is larger than or equal to the wound width We.