| 摘要 |
<p>PURPOSE:To provide the production method which obtains the toner having a sharp grain size distribution in high pulverizing efficiency and in high classification yield and effectively obtains the electrostatic charge image developing toner which forms good picture. CONSTITUTION:In the production method for the electrostatic charge image developing toner, the classification point of a multistage fine powder classification means satisfies the following condition, (1) formula 0<A1...An-1<5.0, (2) formula 1.5<An<7.0, (3) formula A1<...<An-1<An, (4) formula 2<=n<=5, and the medium powder collected to a multistage fine powder classification stage has 3-8mum weight average grain size D4 and the coefficient of variation of number distribution satisfies the following condition, (5) formula 20<=B<=40.</p> |
