Patent ID: 6603947
Filing Date: 2003-08-05
Classification: G03G

Abstract:
A fixing device for use in an image forming apparatus which is capable of forming both-side images on a sheet which passes through the fixing device twice by using a sheet reversing and conveying device, the fixing device comprising:(a) a heat applying rotary body having an elastic layer made of rubber including at least one layer and further a toner releasing layer on top thereof for coming into contact with and heating a side bearing an unfixed toner image of a transfer sheet; (b) a pressure applying rotary body having a second elastic layer made of rubber including at least one layer and further a second toner releasing layer on top thereof for fixing and conveying the transfer material by coming into pressure contact and rotating with the heat applying rotary body; and (c) a heat applying source for heating at least one of said rotary bodies, wherein micro-hardness of the pressure applying rotary body is smaller than that of the heat applying rotary body.