| 摘要 |
PURPOSE:To obtain the toner capable of developing the electro-static latent image high in quality and fidelity and forming a image with superior reproduction performance by enhancing uniform dispersibility of a colorant and a binder resin. CONSTITUTION:The toner is prepared by mixing and dispersing the first binder resin and the colorant in advance and further mixing and dispersing these crushed coarse mixture and the second binder resin, and then crushing and pulverizing them. These binder resins are a combination of optional couples of resins satisfying one of the following 3 conditions: T1<T2, ¦Q1¦<¦Q2¦, and AV1<AV2, where T1 and T2, Q1 and Q2, and AV1 and AV2 are the softening points, the charge amounts, and the acid values or the first and second binder resins, respectively, or the binder resin and an antistatic agent are mixed and dispersed in advance, and this crushed mixture and a colorant are mixed with a charge controller. |
