| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner with addition of a crystalline resin, which shows sufficient low-temperature fixability even in a high-speed fixing process and sufficient durability performance even in a developing system that imparts a load to the toner.SOLUTION: The toner comprises toner particles obtained by granulating and polymerizing a polymerizable monomer composition comprising a polymerizable monomer, a colorant, a polar resin and a crystalline resin in an aqueous medium. The polymerizable monomer, the polar resin and the crystalline resin are specified materials. In the crystalline resin, a mass ratio of a crystalline polyester moiety to a non-crystalline vinyl moiety is within a specific range. A melting point Tm(C) (°C) of the crystalline resin and a glass transition temperature Tg(H) (°C) of the polar resin satisfy specific relationship; and an acid value Av(C) (mgKOH/g) of the crystalline resin and an acid value Av(H) (mgKOH/g) of the polar resin satisfy specific relationship. |
