| 摘要 |
PROBLEM TO BE SOLVED: To obtain a uniform gloss image by forming a stable nip, without causing the fluctuation of the abutting position of a heating roller, even if the center part of a belt tensioning and laying member in an axial direction is bent in the direction of tension. SOLUTION: The fixing device is equipped with the heating roller 1, a pressure roller pressed on the heating roller, the belt tensioning and laying member 4 arranged on an upstream side, in a paper transport direction with respect to the pressure roller and disposed on the pressure roller through a tension spring, and a belt wound around the outer circumferences of the pressure roller and the belt tensioning and laying member and moving, in a state where a fixing nip is formed between the heating roller and the belt. The abutting surface 4a of the belt tensioning and laying member on the heating roller is planar, and the width W of the abutting surface is set to be larger than the nip width N of the belt tensioning and laying member. COPYRIGHT: (C)2006,JPO&NCIPI
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