| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toner having excellent low-temperature fixability and hot offset resistance, showing a broad fixing temperature range from low temperature to high temperature, and having high heat-resistant storage property. <P>SOLUTION: The toner comprises toner particles having a core-shell structure, in which a shell phase containing a resin (A) is formed on a core containing a binder resin, a coloring agent and a wax. In differential scanning calorimetry (DSC) of the resin (A), the peak temperature TpA (°C) at the maximum endothermic peak in the first temperature rising is 55°C or higher and 80°C or lower. In a measurement of viscoelasticity of the resin (A), the loss modulus at TpA-10 (°C) is 1×10<SP POS="POST">7</SP>Pa or more and 1×10<SP POS="POST">8</SP>Pa or less; and in a measurement of viscoelasticity of the resin (A), loss moduli at TpA (°C), TpA+10 (°C) and TpA+25 (°C) satisfy a specific relationship. <P>COPYRIGHT: (C)2013,JPO&INPIT |
