| 摘要 |
<p>PURPOSE:To improve image quality, to completely recover a residual toner on the surface of image carrier and to miniaturize the whole device by coating the surface of non-spherically formed powdery iron particles having a specific average particle diameter with a resin material. CONSTITUTION:The surface of the non-spherically formed powdery iron particles having 10-50mum average particle diameter is coated with the resin material. Both pulverized iron powder and reduced iron powder can be used as the iron powder particles, which is formed into non-spherical shape such as polyhedron, polyhedral shape, scalelike shape, flat shape, unshaped form or the like and has preferably large specific surface area. And as the resin material, styrenes such as p-chlorostyrene or methylstyrene, vinyl halides such as vinyl chloride, vinyl bromide or vinyl fluoride, vinyl esters such as vinyl acetate or viny propionate, alpha-methylene monocarboxylic acid esters such as methyl acrylate, ethyl acrylate or butyl acrylate or the like is used alone or by blending.</p> |
