| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner for electrostatic charge image development which maintains excellent peelability and good glossiness in oil-less fixing, has excellent fixing characteristics, such as surface glossiness of a fixed image and OHP transparency, makes a fine image obtainable by suppressing a roll touch trace at the time of discharging the fixed image and is low in use environmental dependency. SOLUTION: The toner for electrostatic charge image development contains at least a binder resin, a colorant, and a mold releasing material, wherein the mold releasing material satisfies equation (1): 0.1≤η*a≤1.0 and equation (2): 1.1≤η*b/η*a≤3.5. In the equations (1) and (2),η*a represents the complex viscosity (Pas) determined from the first dynamic viscoelasticity measurement at a measured frequency 6.28 rad/s of the mold releasing material andη*b represents the complex viscosity (Pas) determined from the second dynamic viscoelasticity measurement at a measured frequency 62.8 rad/s of the mold releasing material. The first and second dynamic viscoelasticity measurements are executed at temperature in the range of -15 to +15°C with respect to a melting point of the mold releasing material. COPYRIGHT: (C)2005,JPO&NCIPI
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