| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrophotographic seamless belt having high driving stability and no transfer irregularity during printing when an electrophotographic device is used. <P>SOLUTION: A method for manufacturing electrophotographic seamless belt includes steps of: (1) extending a heated test tube-shaped preform, arranged in a blow mold, containing a crystalline thermoplastic resin using an extension rod in the longitudinal direction of the preform and obtaining a bottle-like molded article by flowing gas into the preform to expand the preform; (2) heat-treating the bottle-like molded article in a state of pressurizing the inside thereof after putting the bottle-like molded article into a cylindrical form; and (3) obtaining the electrophotographic seamless belt by cutting and removing an opening and a bottom of the heat-treated bottle-like molded article. The step (2) includes a first and a second heat-treatment processes. <P>COPYRIGHT: (C)2012,JPO&INPIT |
