| 摘要 |
PURPOSE:To obtain a superior toner hving perfectly spherical uniform particles and even electric properties, by polymerizing a liq. mixture of a polymerizable monomer and a colorant dispersed into fine particles into a dispersion medium through application of electrostatic force. CONSTITUTION:A polymn. initiator is dissolved into a polymerizable monomer, such as styrene, and a colorant, such as carbon black, is mixed with it. The obtained liquid mixture is divided into very fine droplets by using an atmizer 1 or the like, and applying voltage between the atomizer 1 An aq. PVA soln. is supplied in the wall 3 from a dispersion medium feed vessel 6, the droplets 4 are collected, and fed through a wall bottom 5 to a polymn. reactor, heated and stirred to complete polymn. A toner perfectly spherical, and uniform in size, good in fluidity, and especially uniform in electrostatic characteristics can be obtd. at low cost. |
