Magnetic force on magnetic particles and its application to electro photography

摘要

In the development process of electro photography, recovery efficiency of magnetic carriers is one of the important factors because it determines quality of photo copying. The carrier particles are attracted by a cylindrical magnet and transported by a nonmagnetic sleeve. At the recovery position the carrier particles drop from the sleeve surface and they are recovered into a casing. When the radius component of the magnetic force is positive (repulsion force), the carrier particles are separated from the sleeve, they are perfectly recovered We analyzed the condition where the magnetic particles generate the positive force and confirmed it experimentally.