電子写真画像形成装置,申请号JP20100249997-传众专利搜索

電子写真画像形成装置

申请公布号：JP5627401(B2)

申请号：JP20100249997

申请日期：2010.11.08

申请公布日期：2014.11.19

申请人：

キヤノン株式会社

发明人：漆原聖平;草場隆;櫻井有治

分类号：G03G15/08;G03G9/08

主分类号：G03G15/08

摘要：PROBLEM TO BE SOLVED: To suppress uneven image density caused by melt sticking of a toner on a developing roller surface regardless of temperature or humidity, and to suppress image failure caused by shaping in a toner amount regulating member and melt sticking of a toner on the toner amount regulating member in a high temperature and high humidity environment.SOLUTION: An electrophotographic image forming apparatus includes: a developing roller 3 supplying a toner onto a surface of an electrophotographic photoreceptor 1 to form a toner image; and a toner regulating member 10 regulating a toner amount to be constant on the developing roller. The developing roller comprises a conductive shaft body, an elastic layer formed in a periphery of the conductive shaft body, and a surface layer formed on the surface of the elastic layer. The surface layer has a polymer unit having a specified siloxane dendrimer in a side chain and a styrene-based or acylate-based polymer unit.