| 摘要 |
PURPOSE:To obtain an electrostatic image developing toner superior in fluidity and grinding performance by mixing 3 kinds of fine inorganic particles different in average particle diameter with resin particles. CONSTITUTION:Three kinds of the fine inorganic particles different in average particle diameter are mixed with the resin particles. The presence of the fine inorganic particles smaller in particle diameter contribute high fluidity performance, the presence of the fine inorganic particles of larger in particle diameter contribute high grinding performance, and the presence of the fine inorganic particles of middle diameters render the smaller particles difficult to be buried in the inside of the toner, and when the smaller ones are buried in the inside, prevent deterioration of fluidity, and consequently, enhance the toner in the fluidity and the grinding performance. |
