電子写真現像用磁石の磁化分布の推定

概要

論文の詳細を見る
The electrophotography system, such as a copier or a laser printer, requires multi-pole magnets for its magnetic development system. Some of the development magnets are produced by in-process magnetization of injection molded plastic magnet. The magnets produced by such a process have complex magnetization distribution. This distribution is reuired for the calculation of magnetic field but generally not known and difficult to express by a formula. Therefore it is necessary to estimate the magnetization distribution of the development magnets. In this paper, an estimation method consisting of two processes was proposed. The first process is an approximation of static magnetic field from the magnetic flux density distribution on the surface of the magnet by using magnetic dipole moments. The second process is a calculation of the magnetization distribution of the magnet which makes the magnetic field equivalent to the approximated magnetic field in the first process. This calculation is formulated as an optimization problem.
2000-05-25