| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a seamless belt which is improved in heat resistance and feed precision, high in durability and is useful as a transfer belt for a color printer. <P>SOLUTION: The seamless belt is made of a heat-resistant high polymer film whose linear expansion coefficient is ≥-5ppm/°C and ≤20ppm/°C, and also, whose tensile elastic modulus is ≥5Gpa. Preferably, the seamless belt is constituted of polymide benzooxazole film having diamines and tetracarboxylic acid anhydrides having a benzooxazole frame as starting materials. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
