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US 8,771,911 B2Granted
Magenta toner for electrophotography, developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
AssigneeFuji Xerox Co., Ltd.
InventorsSatoshi Kamiwaki, Akira Matsumoto, Yusuke Ikeda, Yukiaki Nakamura, Masanobu Ninomiya
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Abstract
A magenta toner for electrophotography, including: toner particles containing, a polyester resin, a coloring agent containing a solid solution of C.I. Pigment Violet 19 and C.I. Pigment Red 122, a release agent, and inorganic particles; and an external additive, wherein an average particle diameter of the inorganic particle is 0.75 times or more the average particle diameter of the coloring agent.
Claims17
A magenta toner for electrophotography, comprising:
- toner particles containing:
- a polyester resin,
- a coloring agent containing a solid solution of C.I. Pigment Violet 19 and C.I. Pigment Red 122,
- a release agent, and
- inorganic particles;
- and
- an external additive,
- wherein:
- an average particle diameter of the inorganic particles is 0.75 times or more the average particle diameter of the coloring agent;
- the inorganic particles have an average particle diameter of from 105 nm to 310 nm;
- the inorganic particles are silica;
- and
- the inorganic particles are present in an amount of from 0.3% by mass to 10% by mass in the toner particles.
10 more elements
Dependencies are inferred from the claim text.