Electrophotographic development process.

摘要

An electrophotographic development process is disclosed, in which a visible toner image is fixed after it is transferred onto transfer members, the visible toner image being formed by a development device on a photosensitive substance (1) used for forming a latent image and a visible image, by a magnetic field source device (3), arranged in the vicinity of the photosensitive substance (1), having a movable member (2) for conveying a developer on the surface and forming magnetic brush, a development container (5) supporting the magnetic field source device (3) and a developer regulating plate (4), the improvement wherein the developer is a mixture of carriers and toner, and wherein the carriers are at least one of spherical, substantially spherical, and flake-like shapes and a mixture of at least two kinds of carriers ranging from 30 to 150 mu m in average grain size. According to the present invention, motor load is reduced by torque drop, a stirring device and its accessory parts are omitted, and as a result, the development device can be made compact and less costly.