Abstract:
A fusing device having a structure which may improve fusing performance is provided. The fusing device includes a heating roller disposed to contact a surface of the recording medium to transfer heat thereto, an endless belt disposed to rotate together with the heating roller, and a pressing member to press an inner surface of the endless belt to allow a fusing nip to be formed between the heating roller and the endless belt.The heating roller includes a shaft formed in a cylindrical shape, a heat-generating layer disposed to surround the shaft and to generate heat to heat the recording medium passing through the fusing nip, an insulating layer disposed between the shaft and the heat-generating layer to electrically insulate the heat-generating layer and the shaft, and a release layer disposed to surround the heat-generating layer and adapted to prevent the recording medium passing through the fusing nip from sticking to the heating roller.
Abstract:
A fusing device and an image forming apparatus are provided. The fusing device includes a fusing belt provided to be rotatable, a pressing member disposed to face the fusing belt, wherein the pressing member and the fusing belt form a fusing nip, a heat source disposed inside the fusing belt, wherein the heat source is disposed at a side of the fusing nip, a guide member including a heat source seat, on which the heat source is mounted, and configured to guide rotation of the fusing belt, and a pressing support member provided at one side of the heat source seat and configured to press the heat source toward the other side opposite the one side of the heat source seat.
Abstract:
A fixing device is provided which includes a fixing belt rotatably arranged, a fixing roller disposed to face the fixing belt and forming a fixing nip together with an outer surface of the fixing belt a guide unit configured to guide rotation of the fixing belt in the fixing belt; and a pair of support units configured to limit movement of the fixing belt in a width direction at both ends of the guide unit. The fixing device may have a structure of guiding rotation of the fixing belt and a structure of limiting movement thereof in width direction, which are separated from each other.
Abstract:
Disclosed herein are an image fixing device and an image forming apparatus having the same. The image fixing device includes a fixing belt which is rotatably disposed, and a pressure roller which is disposed to be opposite to the fixing belt and thus to press an outer circumferential surface of the fixing belt, wherein the fixing belt includes a fixing part of which an outer surface has a first friction coefficient, and a meandering movement preventing part which is located at each of both ends of the fixing part in a length direction of the fixing belt, and of which an outer surface has a second friction coefficient greater than the first friction coefficient. By the configuration, a meandering movement of the fixing belt is prevented, and thus it is possible to improve fixing efficiency.