Fixing apparatus for fixing a toner image to a recording medium

A fixing apparatus for fixing a toner image on a recording material, the fixing apparatus comprising:

• a cylindrical film;
• a heater configured to contact the film, the heater including a substrate having a narrow and long shape and a heat generation resistor including an electrode portion and formed on the substrate along a longitudinal direction of the substrate;
• a roller configured to form a nip portion with the film;
• a plurality of heat conduction members configured to contact a surface of the heater opposite to a surface of the heater contacting the film, each of the plurality of heat conduction members having a higher thermal conductivity than that of the substrate;
• and
• a connector configured to be connected with the electrode portion and through which power is supplied to the heat generation resistor, the connector being provided on either one of longitudinal end portions of the heater,
• wherein the recording material on which the toner image is formed is conveyed and heated at the nip portion to fix the toner image on the recording material, and
• wherein the plurality of heat conduction members include a first heat conduction member and a second heat conduction member which are arranged in the longitudinal direction of the substrate with a gap therebetween, the first heat conduction member being longer than the second heat conduction member and contacting a region of the heater continuously extending from a longitudinal center of the heat generation resistor to a non-passing region of the heater where a small-sized recording material does not pass in the longitudinal direction of the substrate, the first heat conduction member being provided at a position nearer to the connector than the second conduction member.