| 摘要 |
PURPOSE:To uniformize the electrostatic chargeability of the toner and to enhance the wear resistance thereof by incorporating a specific high-molecular polymer into a binder resin. CONSTITUTION:At least a photoconductive pigment (e.g.: zinc oxide) and the binder resin (A) are incorporated into the above toner and the high-molecular polymer (B) having a polar functional group is incorporated into the component A. The amt. of the component B acting as a charge control agent of a high- polymer resin system to the component A is preferably 1 to 30wt.%. A polymer having an acryl chain in the basic skeleton is usable for the component B in the case of using the acrylic copolymer for the component A. |
