초록 ▼

An image heating apparatus includes a rotatable heating member configured to heat an image on a recording medium at a nip, driving means configured to drive the heating member, an endless belt configured to form the nip with the heating member, and a driving roller configured to drive the endless be

An image heating apparatus includes a rotatable heating member configured to heat an image on a recording medium at a nip, driving means configured to drive the heating member, an endless belt configured to form the nip with the heating member, and a driving roller configured to drive the endless belt. In the image heating apparatus, the following expressions are satisfied: description="In-line Formulae" end="lead"μ22 is a friction coefficient between the endless belt and the driving roller, μ1 is a friction coefficient between the heating member and the endless belt, V1 is a peripheral speed of the heating member, and V2 is a peripheral speed of the driving roller.

대표청구항 ▼

What is claimed is: 1. A fixing apparatus comprising: a heat rotation member and an endless belt configured to heat-fix an unfixed toner image on a recording medium at a nip therebetween, the heat rotation member being disposed so as to be in contact with the unfixed toner image at the nip; a drivi

What is claimed is: 1. A fixing apparatus comprising: a heat rotation member and an endless belt configured to heat-fix an unfixed toner image on a recording medium at a nip therebetween, the heat rotation member being disposed so as to be in contact with the unfixed toner image at the nip; a driving device configured to drive the heat rotation member to rotate; and a driving roller configured to drive the endless belt to rotate and to press the endless belt toward the heat rotation member, wherein the following expressions are satisfied: description="In-line Formulae" end="lead"μ21 is a friction coefficient between the heat rotation member and the endless belt, μ2 is a friction coefficient between the endless belt and the driving roller, V1 is a peripheral speed of the heat rotation member, and V2 is a peripheral speed of the driving roller. 2. The fixing apparatus according to claim 1, wherein, when the heat rotation member and the endless belt are pressed into contact with each other, the peripheral speed V2 of the driving roller is higher than a peripheral speed of the endless belt, and the peripheral speed of the endless belt is substantially the same as the peripheral speed V1 of the heat rotation member, and wherein, when the heat rotation member is not in contact with the endless belt, the peripheral speed V2 of the driving roller is substantially the same as the peripheral speed of the endless belt. 3. The fixing apparatus according to claim 1, further comprising: a pressing pad configured to press the endless belt toward the heat rotation member; and an applying device configured to apply a lubricant to an inner surface of the endless belt. 4. The fixing apparatus according to claim 1, wherein the heat rotation member includes a heating roller, and the driving device drives the heating roller to rotate, and wherein the friction coefficient μ1 corresponds to a friction coefficient between the heating roller and the endless belt, and the peripheral speed V1 corresponds to a peripheral speed of the heating roller. 5. The fixing apparatus according to claim 1, wherein the heat rotation member includes an endless heating belt, and the driving device includes a belt driving roller configured to drive the endless heating belt to rotate and to press the endless heating belt toward the driving roller, and wherein the friction coefficient μ1 corresponds to a friction coefficient between the endless heating belt and the endless belt, and the peripheral speed V1 corresponds to a peripheral speed of the endless heating belt. 6. The fixing apparatus according to claim 5, further comprising a pressing pad configured to press the endless belt toward the heat rotation member and a belt pressing pad configured to press the endless heating belt toward the pressing pad.