| 摘要 |
<p>PURPOSE:To obtain an electrostatic charge image developing toner 'n scarcely causing cut-off molecular chain at the time of kneading, excellent in the dispersion of a coloring agent and static charge characteristic. CONSTITUTION:In the electrostatic charge image developing toner produced by premixing a toner composition composed of at least a binding resin, the coloring agent and a release agent in the production process, when the content of the coloring agent and the release agent of the toner after the completion of the production is respectively xA and xB, the toner is produced so as to satisfy the relations of 0.7<=xC/xA and xD/xB<=1.3 by mixing 5-40wt.% fine powder, which has the coloring agent content of xC, the release agent content of xD and is 0.3-2.0Xm in the number average particle diameter D50 having the relation of D25/D501=0.4-1.0 and D75/D50=1.0-1.8, with the toner composition in a previous mixing stage of the production process.</p> |
