| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide electrophotographic toner which contains a bio-plastic as a binder resin, and achieves both of cost reduction of hydrolysis inhibitor and excellent shelf stability and durability. <P>SOLUTION: The electrophotographic toner is formed by mixing a material mixture containing the binder resin which contains the bio-plastic having a weight average molecular weight of 5,000 to 50,000, colorant, and the hydrolysis inhibitor comprising aliphatic carbodiimide and aromatic carbodiimide, and pulverizing them. The content of the hydrolysis inhibitor is 5 to 9 mass% of the toner mass, and is larger than the content of the aromatic carbodiimide. <P>COPYRIGHT: (C)2013,JPO&INPIT |
