| 摘要 |
PURPOSE:To facilitate a conducting treatment by using the particles formed by sticking conductive fine powder around the fine particles of a thermoplastic resin as a conductive layer of the toner for dry development formed by imparting an electrical conductivity around the toner particles contg. waxes, higher fatty acids, polyolefin, olefin copolymer, etc. CONSTITUTION:The thermoplastic resin, such as polymethyl methacrylate, polyethyl methacrylate and poly-n-butyl methacrylate, is used in the form of particles having 0.1 to 1.0mum grain size having the conductive layer of the toner formed by providing the conductive layer around the toner particles contg. at least one kind of the vegetable natural wax, such as candelilla wax, higher fatty acid, such as stearic acid, and olefin copolymers, such as polyethylene of a low mol. wt. and vinyl acetate copolymer. Furnace black, lamp black, acetylene black, etc., are used for the conductive powder to be added thereto. |
