JP2007298554A5 - - Google Patents

Claims (6)

An endless belt having a base layer, a surface release layer, and a rubber layer provided between the base layer and the surface release layer, a heater in contact with the inner surface of the endless belt, and the heater via the endless belt An image heating apparatus having a pressure roller that forms a fixing nip portion, and heating while nipping and conveying a recording material that carries an image in the fixing nip portion,
The surface release layer is a layer formed by coating, and the hydrochloric acid permeation amount after 30 days in the chemical solution permeation test is 3.0 × 10. ^-4 (G · cm / cm ² An image heating apparatus characterized by the above. The surface release layer has a value [hydrochloric acid permeation / film thickness] of 300 (g · cm / cm ² · cm) or more obtained by dividing the hydrochloric acid permeation quantity after 30 days in the chemical liquid permeation test by the film thickness. an apparatus according to claim 1, wherein. The rubber layer is a silicone rubber composition having a thermal conductivity of 0.25 [W / m · K] or more to which a conductive filler is added, and has a water absorption of 0.010 (mg / mm ³ ) or more in a boiling test. The image heating apparatus according to claim 1, wherein the apparatus is an image heating apparatus . An endless belt having a base layer, a surface release layer, and a rubber layer provided between the base layer and the surface release layer, the heater being in contact with the inner surface of the endless belt, and the endless belt via the endless belt In an endless belt used for an image heating apparatus that has a pressure roller that forms a fixing nip portion together with a heater, and heats the recording material that holds an image in the fixing nip portion while nipping and conveying the recording material.
The release layer is a layer formed by coating, endless hydrochloric permeation amount after 30 days in the liquid chemical permeation test, characterized in that it is ^{3.0 × 10 -4 (g · cm} / cm 2) or more Belt . The surface release layer has a value [hydrochloric acid permeation / film thickness] of 300 (g · cm / cm ² · cm) or more obtained by dividing the hydrochloric acid permeation quantity after 30 days in the chemical liquid permeation test by the film thickness. The endless belt according to claim 4. The rubber layer has a thermal conductivity of 0.25 with the addition of conductive filler to a [W / m · K] or more silicone rubber composition, water absorption at boiling test is 0.010 (mg / mm ³⁾ or more The endless belt according to claim 4 or 5, wherein