Patent ID: 9639041
Date: 2017-05-02
CPC Classifications: G03G

Claim:
1. A fixing device comprising: a belt member that rotates to fix a toner image to a recording material; a pressing unit that, along with the belt member, presses the recording material while the pressing unit rotates; a heating section that contacts an inner side of the belt member and heats the belt member; and a nip forming portion that is provided at the inner side of the belt member, the nip forming portion forming a nip where the recording material is nipped between the belt member and the pressing unit, wherein the heating section is disposed at an outer side of a locus of the belt member when the heating section is not provided and that is nipped by the nip forming portion and the pressing unit, and wherein the heating section is positioned such that a rotation center of the belt member is displaced from an imaginary line that passes through a rotation center of the pressing unit and a center of the nip, and wherein a distance of the heating section from the locus is larger at an upstream side of the heating section in a rotation direction of the belt member than at a downstream side of the heating section in the rotation direction of the belt member, and wherein the distance of the heating section from the locus is gradually decreased from the upstream side to the downstream side.