| 摘要 |
Provided is a toner which has an excellent balance between thermal storage stability and low-temperature fixability, while having excellent print durability in various temperature/humidity environments from low-temperature low-humidity environments to high-temperature high-humidity environments. A toner for developing electrostatic images, which contains colored resin particles that contain a binder resin, a coloring agent, a softening agent and a fixing assistant, and an external additive. This toner for developing electrostatic images is characterized in that: the fixing assistant is a copolymer of an acrylic acid ester and/or a methacrylic acid ester and an acrylic acid and/or a methacrylic acid; and the copolymer has an acid value of 0.5-7 mgKOH/g, a weight average molecular weight (Mw) of 6,000-50,000 and a glass transition temperature of 60-85°C. |
