| 摘要 |
PURPOSE:To obtain a toner which obviates the filming of a remaining toner during cleaning of a photosensitive body, has good fixability on plain paper as well under low pressure and has excellent durability by incorporating a fluoropolymer powder to the inside and outside of the capsule toner. CONSTITUTION:The capsule toner dispersed with the fluoropolymer powder to the core material or added externally with 0.001-10wt% the fluoropolymer to the surface of the shell of the core material incorporated with said powder at 0.1%-30wt% on the surface thereof in the locally existing state is manufac tured. PE, paraffin, wax, etc. which are liable to intertwine with the fibers of plain paper under about <=20kg/cm linear pressure are mixed preferably with the press fixing components of the core material. A (co)polymer resin of styrene, (meth)acryl, etc. is used for the shell. Hydrophobic colloidal silica, etc. are externally mixed with such capsule toner particles, by which the devel oper is obtd. The capsule toner which has the good press fixability and obviates the filming on the surface of the photosensitive body is thus obtd. |
