| 摘要 |
PURPOSE:To reduce adhesion tendency of a copied image to a PVC film to as low as possible by using a binder resin composed of a polyester type resin and a styrene-acrylic type resin. CONSTITUTION:A toner is composed of the binder resin made of a mixture of polyester type resin and a styrene-acrylic type resin in a mixing ratio of 7:3- 3:7 by weight, and a colorant and a releasing agent dispersed into this binder resin having a specific gravity of 1.09-1.16. The polyester type resin is obtained by polycondensing, e.g., a diol component with a multivalent carboxylic acid or its anhydride, or its deriv., preferably, in a carboxyl/hydroxyl equivalent ratio of 1.2-0.8, especially, 1.1-0.9. |
