| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To form a good thermal conductive member of optimum size at an optimum position in a favorable contact state, properly heating a fixing member, and reducing a warm-up time. <P>SOLUTION: A fixing device includes: an endless fixing member having flexibility; a pipe-like metal thermal conductor fixed close to the inside of the fixing member; and a heat source for heating the metal thermal conductor, wherein the fixing member is provided on the metal thermal conductor to freely rotate, and pressing and heating are performed through a nip formed by a nip forming member in the interior of the fixing member and a pressure unit opposite thereto through the fixing member. In the metal thermal conductor, the surface treatment is applied to the inner surface thereof, and the surface treatment is formed to be different in material quality or thickness in the circumferential direction of the metal thermal conductor, and also different in material quality or thickness between a paper passing area and a non-paper passing area in the axial direction of the metal thermal conductor. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
