Toner for electrostatic charge image development
A toner for electrostatic charge image development includes toner base particles including at least a binder resin, has a volume resistivity of 1.0×10 14 Ω·cm or more at 25° C. with 50% RH by a temperature change method, and has a volume resistivity of 1.0×10 15 Ω·cm or less at 67° C. by the temperature change method.
1. A toner for electrostatic charge image development, comprising toner base particles including at least a binder resin,
having a volume resistivity of 1.0×10 14 Ω·cm or more at 25° C. with 50% RH by a temperature change method, and
having a volume resistivity of 1.0×10 15 Ω·cm or less at 67° C. by the temperature change method.
2. The toner for electrostatic charge image development according to claim 1 , wherein
the toner base particles contain a crystalline substance.
3. The toner for electrostatic charge image development according to claim 2 , further comprising
a crystalline polyester resin as the crystalline substance.
4. The toner for electrostatic charge image development according to claim 3 , wherein
the crystalline polyester resin is contained in the toner base particles within the range of 1 to 20% by mass.
5. The toner for electrostatic charge image development according to claim 1 , wherein
the toner base particles contain a release agent.
6. The toner for electrostatic charge image development according to claim 5 , further comprising
an ester-based wax as the release agent.
7. The toner for electrostatic charge image development according to claim 1 , further comprising
a styrene-acrylic resin as the binder resin.
8. The toner for electrostatic charge image development according to claim 1 , wherein
the content of sulfur element (S) as measured by X-ray analysis is within the range of 0.2 to 0.7 at %.