MOLD FOR MOLDING ELASTIC ROLLER, ELASTIC ROLLER AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE

• Main Authors: FUJITSUNA KENICHI, MOMOSE YOSHINORI
• Format: Patent
• Language: English
• Published: 18.10.2007
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; MAGNETOGRAPHY; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a mold for molding an elastic roller, suitable for manufacturing the elastic roller excellent in the properties of elasticity, dimensional stability, adhesion resistance and electric homogeneity and the like and having a long life and capable of improving productivity, reducing the waste of a raw material i.e., a liquid silicone mixture and improving the yield of the product; to provide the elastic roller manufactured by it; and to provide an electrophotographic image forming device using it. SOLUTION: The mold for molding the elastic roller has a cylindrical mold having a cavity, a mold on one end that is fitted on the end part of the cylindrical mold and equipped with a sprue, and a mold on the other end that is fitted on the other end of the cylindrical mold and equipped with a vent, and it is characterized in that the shape of the sprue is a truncated cone widening towards the cavity side. Also provided are the elastic roller manufactured by using this mold for molding the elastic roller, a development roller that has one or more coat layers provided on the elastic roller, and the electrophotographic image forming device equipped with this development roller. COPYRIGHT: (C)2008,JPO&INPIT