To provide an electrifying magnetic particle, a method for manufactur ing the electrifying magnetic particle, the electrifying device and an electrophotographic device for preventing the surface of the photoreceptor drum from being soiled even in the case of repeatedly electrifying the photoreceptor drum by bringing a magnetic brush into contact with the photoreceptor.
As for the electrifying magnetic particle manufacturing method including a process of mixing raw materials of the magnetic particles, a process of molding the obtained mixture, a process of firing the obtained molding, and a process of adjusting the obtained fired subject to a prescribed particle size, the manufacturing method includes a process of immersing the magnetic particles whose particle size is adjusted into an acid.
MIZOE MAREKATSU
TAKAMORI TOSHIO
ARATAIRA FUMIHIRO
