| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner binder excellent in toner fluidity, a heat-resistant storage property, charge stability, grindability, image intensity and flexural properties while obtaining low temperature fixability, glossiness and hot offset resistance.SOLUTION: The toner binder includes a resin composition (C) obtained by mixing and reacting a molten mixture of an amorphism polyester resin (A) having a glass transition temperature of -35°C or more and less than 45°C and an amorphism polyester resin (B) having a glass transition temperature of 45°C or more and 80°C or less with an extender (D). Following relational expressions (1) and (2) are satisfied. 0.02≤X≤0.08 (1) 0.10≤X/X≤0.90 (2) [where, in the relational expressions, Xrepresents the average crosslinking density of the polyester resin (A) and the polyester resin (B), and Xrepresents the average crosslinking density of the resin composition (C).]SELECTED DRAWING: None |
