METHOD OF MANUFACTURING ELASTIC ROLLER, ELASTIC ROLLER AND IMAGE FORMING DEVICE USING IT,申请号JP20070150629-传众专利搜索

METHOD OF MANUFACTURING ELASTIC ROLLER, ELASTIC ROLLER AND IMAGE FORMING DEVICE USING IT

申请公布号：JP2008304627(A)

申请号：JP20070150629

申请日期：2007.06.06

申请公布日期：2008.12.18

申请人：

BRIDGESTONE CORP

发明人：TAKAHASHI WATARU;KUSANO AKIRA;MASUYAMA TORU

分类号：G03G15/00;B29C39/10;B29K75/00;B29K105/04;B29L31/32;F16C13/00;G03G15/02;G03G15/08;G03G15/16;G03G15/20;G03G21/10

主分类号：G03G15/00

摘要：<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing an elastic roller which has an approximately uniform cell size of polyurethane foam and can suppress generation of image unevenness. <P>SOLUTION: In this method of manufacturing the elastic roller comprising an elastic layer made of polyurethane foam foamed and formed by injecting an urethane material 3 containing polyol, polyisocyanate, a catalyst and water into a mold 2 to which a shaft is arranged, using a urethane foaming machine equipped with a discharge head 4, the urethane reaction rate in the foaming and forming follows the relation as in the expression: 0.26≤rise time/cycle time≤0.81. Moreover, for the urethane reaction rate in the foaming and forming, it is favorable that the cycle time is in the range of 13-120 seconds and the rise time is in the range of 10-80 seconds. <P>COPYRIGHT: (C)2009,JPO&INPIT