Electroconductive magnetic carrier, developer using the same and image formation method

摘要

An electroconductive magnetic carrier which is composed of carrier particles, each of the carrier particles comprising a basic particle in which magnetic particles with an average particle diameter of 0.05 to 1.0 mu m are dispersed in a binder resin, and electroconductive finely-divided particles with an average particle diameter of 0.5 mu m or less which are fixed on the surface of said basic particle to form a carrier particle with an average particle diameter of 5 to 100 mu m; a developer which is composed of the above electroconductive magnetic carrier and an electrically insulating toner; and an image formation method of forming toner images on a photoconductor by using this developer are described.