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US 8,507,713 B2Granted
Pigment, method for manufacturing the same, pigment dispersion, and yellow toner
AssigneeCanon Kabushiki Kaisha
InventorsKei Inoue, Takayuki Toyoda, Yutaka Tani, Taichi Shintou, Yasuaki Murai, Masashi Hirose
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Abstract
A pigment has a compound expressed by Formula (1). The pigment has a number average primary particle size of 30 to 70 nm and has a CuKα characteristic X-ray diffraction spectrum having, when θ represents a Bragg angle, a peak at 2θ±0.20° equal to 10.0° and a peak at 2θ±0.20° equal to 11.1°, the intensity ratio of the 11.1° peak to the 10.0° peak being 0.1 to 0.6.
Claims1
A method for manufacturing a pigment comprising a compound expressed by Formula (1)
- the method comprising:
- diazotizing a compound expressed by Formula (2):
- coupling the product of the diazotization with a compound expressed by Formula (3):
- and
- heat-treating the compound produced by the coupling at a temperature of 145° C. or more in a dry process,
- wherein the pigment has a number average primary particle size of 30 to 70 nm, and has a CuKα characteristic X-ray diffraction spectrum having, when θ represents a Bragg angle, a peak at 2θ±0.20° equal to 10.0° and a peak at 2θ±0.20° equal to 11.1°, the intensity ratio of the 11.1° peak to the 10.0° peak being 0.1 to 0.6.
3 more elements
Dependencies are inferred from the claim text.