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US 7,141,342 B2Granted
Magenta toner and process for producing magenta toner
AssigneeCanon Kabushiki Kaisha
InventorsTakayuki Toyoda, Yasuaki Murai, Takeshi Miyazaki, Norikazu Fujimoto
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Abstract
This invention provides a magenta toner obtaining a sharp color and having a high coloring power and superior transparency and light-fastness. The magenta toner of the present invention is characterized by having magenta toner particles containing at least a coloring compound having a structure represented by the following Formula (1)
Claims6
A magenta toner comprising magenta toner particles containing at least a coloring compound having a structure represented by the following Formula (1):
- wherein R1 and R2 each independently represent a straight-chain alkyl group having 1 to 4 carbon atoms, R3 represents an alkyl group having 1 to 6 carbon atoms, and An− represents a counter anion, wherein said magenta toner particles are polymerization magenta toner particles formed by granulating in an aqueous medium a polymerizable monomer composition containing at least a polymerizable monomer, the coloring compound having the structure represented by the above Formula (1) and a polymerization initiator, and polymerizing the polymerizable monomer.
Dependencies are inferred from the claim text.