| 摘要 |
Upgrading is attained in the development, transfer and fixation of toner. The toner is one having toner particles containing at least a binder resin, a wax and a colorant, characterized in that the glass transition temperature (TgA), as measured by a differential scanning calorimeter, of the toner is in the range of 40°to 60°C, and that the maximum peak temperature (P1), as measured by a differential scanning calorimeter, of the toner is in the range of 70°to 120°C, and that the glass transition temperature (TgB), as measured by a differential scanning calorimeter, of cyclohexane (CHX) insolubles among tetrahydrofuran (THF) solubles of the toner is in the range of 80°to 120°C, and that the above TgA and TgB satisfy a specified formula, and that the viscosity at 100°C, as measured by a flow tester temperature raising method, of the toner is in the range of 5000 to 30,000 Pa.s, and that the acid value of the cyclohexane (CHX) insolubles is in the range of 5 to 40 mgKOH/g.
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