Schaumstoffkörper aufweisende Walze und Verfahren zur Herstellung der Walze,申请号DE1993628939-传众专利搜索

Schaumstoffkörper aufweisende Walze und Verfahren zur Herstellung der Walze

申请公布号：DE69328939(D1)

申请号：DE1993628939

申请日期：1993.11.12

申请公布日期：2000.08.03

申请人：

TOKAI RUBBER INDUSTRIES, LTD.

发明人：HAYASHI, SABURO;OINUMA, SUMIO;YAMAMOTO, TAKAFUMI;SOUMIYA, KAZUTOSHI;KATO, HIROYASU

分类号：B29C44/12;B29C44/14;F16C13/00;G03G15/02;G03G15/08;G03G15/16;G03G15/20;G03G21/00;(IPC1-7):G03G15/20

主分类号：B29C44/12

摘要：<p>A charging roll is disclosed which includes a center shaft (12), a foam layer (14, 22) formed on an outer circumferential surface of the center shaft, an electrically conductive elastic layer (16) formed on an outer surface of the foam layer, and a resistance adjusting layer (18) and a protective layer (20) formed by coating on an outer surface of the electrically conductive elastic layer. The foam layer consists of an electrically conductive foam body or a foam body a part of which is made electrically conductive. Also is disclosed a method of producing a composite roll, such as the above charging roll, which includes a foam layer formed on a shaft, and a solid elastic layer formed on the foam layer. This method includes the step of forming multiple minute grooves (32, 42) in an outer circumferential surface of a pre-foam tube (34) which gives the foam layer, or an inner circumferential surface of an elastic tube (36) which gives the solid elastic layer. <IMAGE></p>