JP2005300591A5 - - Google Patents

Claims (10)

A fixing member for fixing the unfixed toner image on the recording material as a fixed image by pressurizing and heating the recording material on which the unfixed toner image is formed;
Having at least a base material, an elastic layer, and a surface layer,
(1) The elastic layer includes a heat conductive filler, and the area ratio of the heat conductive filler in the cross section in the thickness direction of the elastic layer is 30 to 65%.
(2) having two peaks in a volume-based frequency distribution curve with respect to the particle size of the thermally conductive filler;
(3) The ratio dp1 / dp2 between the smaller particle diameter dp1 and the larger particle diameter dp2 of the two peak particle diameters is 0.06 to 0.5,
(4) The elastic layer contains a material obtained by curing an addition reaction type silicone rubber as a matrix material,
(5) A fixing member, wherein tan δ in dynamic viscoelasticity measurement at a temperature of 180 ° C., an amplitude of 10 μm, and a frequency of 1 Hz of the elastic layer is 0.06 to 0.2.   The fixing member according to claim 1, wherein a ratio hp1 / hp2 of the frequency value hp1 at the particle diameter dp1 and the frequency value hp2 at the particle diameter dp2 in the frequency distribution curve is 0.1 to 3.   The fixing member according to claim 2, wherein the hp1 / hp2 is 0.2 to 1.   The fixing member according to claim 1, wherein the heat conductive filler is an inorganic substance.   The fixing member according to claim 1, wherein the thermal conductivity of the thermal conductive filler is 10 W / m · K or more.   The fixing member according to claim 1, wherein the elastic layer has a thickness of 100 to 2500 μm.   The fixing member according to claim 1, wherein the surface layer contains a fluororesin, and the thickness of the surface layer is 5 to 50 μm. The fixing member according to claim 1, wherein the dp1 is in the range of 0.6 to 35 μm, and the dp2 is in the range of 10 to 70 μm. The fixing member according to claim 8, wherein the dp1 is in a range of 3.7 to 6.0 μm, and the dp2 is in a range of 12 to 63 μm. At least a fixing member and a pressure member form a nip portion, and a recording material on which an unfixed toner image is formed is pressed and heated in the nip portion, whereby the unfixed toner image is used as a fixed image as a recording material. A fixing device for fixing to
The fixing device according to claim 1, wherein the fixing member is the fixing member according to claim 1.