JP2008165024A5 - - Google Patents

Claims (8)

A heating rotator, a backup member that contacts the heating rotator to form a nip portion, and a heating unit that heats the heating rotator from the outside, while sandwiching and conveying the recording material at the nip portion. a heating rotating member used in an image heating apparatus for heating an image on a recording material, said heating rotary member, and the heat insulating layer, an elastic layer provided on the outside of the heat insulating layer, off filler is mixed wherein the elastic layer Ru high thermal conductivity der than the heat insulating layer, a release layer provided on the outer side of the front Symbol bullet resistant layer is a material of high thermal conductivity than the fluorine resin fluororesin and a release layer an aspect ratio of 3 or more off filler is mixed made more, has the area at which the release layer is cut in the thickness direction of the releasing layer A1, the area A1 the area occupied by the full filler that is part of the A2, the releasing property of the release layer Surface and the area when cut in a direction parallel to B1, when the area occupied by the full filler which is Ru contained in the area B1 and the B2, the relationship of the area B2 / B1 and the area A2 / A1,
A2 / A1 ≧ 0.6 × B2 / B1
A heating rotator characterized by the following relationship. 2. The heating rotator according to claim 1, wherein the release layer has a thermal conductivity in a thickness direction of at least 0.35 W / m · K or more. A heating rotator, a backup member that contacts the heating rotator to form a nip portion, and a heating unit that heats the heating rotator from the outside, while sandwiching and conveying the recording material at the nip portion. a heating rotating member used in an image heating apparatus for heating an image on a recording material, said heating rotary member, and the heat insulating layer, an elastic layer provided on the outside of the heat insulating layer, off filler is mixed wherein the elastic layer Ru high thermal conductivity der than the heat insulating layer, a release layer provided on the outer side of the front Symbol bullet resistant layer is a material of high thermal conductivity than the fluorine resin fluororesin and a release layer an aspect ratio of 3 or more off filler is mixed made more, has the area at which the release layer is cut in the thickness direction of the releasing layer A1, the area A1 the area occupied by the full filler that is part of the A2, the releasing property of the release layer Surface and the area when cut in a direction parallel to B1, when the area occupied by the full filler which is Ru contained in the area B1 and the B2, the relationship of the area B2 / B1 and the area A2 / A1,
A2 / A1 ≧ 0.6 × B2 / B1
A method of manufacturing a heating rotator that is related to
Before notated filler is applying a liquid fluorocarbon resin coating material mixed in the inner surface of the hollow cylindrical mold, drying, a step of firing to form the release layer, said release layer prior Symbol bullet to the inner surface of forming a sexual layer, and forming the heat-insulating layer on the inner surface of the front Symbol bullet resistant layer has a dry of the liquid fluorocarbon resin coating in the step of forming the release layer is at least the hollow A method for producing a heating rotator, comprising performing a cylindrical mold in a rotating state at a rotational speed of 180 rpm or less. Said longitudinal direction before notated filler with the rotation of the hollow cylindrical mold is then blended in advance the liquid fluororesin coating the alignment inhibition filler that inhibits orienting the inner surface parallel direction of the hollow cylindrical mold The method for producing a heating rotator according to claim 3, wherein the heating rotator is provided. Wherein for longitudinal pre-notated filler with the rotation of the hollow cylindrical mold inhibits be oriented to the inner surface parallel direction of the hollow cylindrical mold, before notated filler is entrained liquid fluorocarbon resin paint The method for producing a heating rotator according to claim 3, wherein an electric field is applied to the liquid fluororesin coating material when applying to the inner surface of the hollow cylindrical mold and drying.   The orientation-inhibiting filler has a particle shape, and when the average particle diameter is R (unit: μm), the relationship with the fiber diameter D (unit: μm) of the high thermal conductive filler is 0.5 ≦ R / D. The manufacturing method of the heating rotator according to claim 4, wherein ≦ 10 is satisfied. A heating rotator, a backup member that contacts the heating rotator to form a nip portion, and a heating unit that heats the heating rotator from the outside, while sandwiching and conveying the recording material at the nip portion. In an image heating apparatus for heating an image on a recording material,
The heating rotating body, and the heat insulating layer, an elastic layer provided on the outside of the heat insulating layer, and the elastic layer Ru high thermal conductivity der than the heat insulating layer off filler is mixed, before Symbol a release layer provided on the outer side of the elastic layer, and a release layer which aspect ratio made of a material of high thermal conductivity than the fluorine resin fluororesin 3 or more full filler is mixed, has the area at which the release layer is cut in the thickness direction of the releasing layer A1, the area occupied by the full filler which is Ru included in the area A1 A2, the said release layer the area when cut in a direction parallel to the surface of the releasing layer B1, when the area occupied by the full filler which is Ru contained in the area B1 and the B2, and the area A2 / A1 of the area B2 / B1 Relationship
A2 / A1 ≧ 0.6 × B2 / B1
An image heating apparatus characterized by The image heating apparatus according to claim 7, wherein the release layer has a thermal conductivity in a thickness direction of at least 0.35 W / m · K.