| 摘要 |
PURPOSE:To perform printing without causing the adhesion of carrier to a paper by allowing the carrier whose saturation magnetization, particle size and specific gravity are set at specified set values to float while impressing a specified voltage between a photosensitive body and a rotor with a sleeve where a magnetic pole is arranged and attaching a carrier particle whose saturation magnetization, particle size and specific gravity are smaller than the specified set values to the photosensitive body and removing it. CONSTITUTION:The carrier 1 whose saturation magnetization, particle size and specific gravity are specified set values are allowed to float while impressing the specified voltage between the rotor with the sleeve 3 where the magnetic pole 2 is arranged and the rotatable photosensitive body 4 which is arranged to be opposed to the rotor 3. The carrier particle whose saturation magnetization, particle size and specific gravity are smaller than the specified set value of the carrier 1 which is allowed to float is attached to the photosensitive body 4 or the rotors with a magnet and the sleeve 5 and 6 respectively set near the rotor with sleeve 3 and the photosensitive body 4. Then, the rest is attached to the rotor with sleeve for recovery 7 which is set below the photosensitive body 4 and provided with the magnetic pole and recovered, thereby obtaining the carrier 1a for the developer used for the development of electrostatic photography. |
