Cyan toner and method of producing cyan toner
AssigneeCanon Kabushiki Kaisha
InventorsTakayuki Toyoda, Yasuaki Murai, Masayoshi Kato, Norikazu Fujimoto, Takeshi Miyazaki
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Abstract
A cyan toner is provided which is brighter and more greenish in hue than conventional cyan toners and highly translucency. A cyan toner characterized by comprising toner particles at least having a coloring compound represented by the Formula (1):
Claims8
A cyan toner, comprising toner particles comprising at least a binder resin and a colorant, wherein the colorant is a coloring compound having a structure represented by the Formula (1):
- wherein R1 to R4 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted aralkyl group;
- R5 and R6 each independently represents a hydrogen atom or an alkyl group;
- R7 and R8 each independently represents a hydrogen atom, a sulfonic acid group, a substituted or unsubstituted amino group or —SO2NR9R10;
- R9 and R10 each independently represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group, provided that R9 and R10 may form a heterocycle together with the nitrogen atom;
- and n represents an integer of 1 to 3, and wherein if either R7 or R8 is not —SO2NR9R10, at least one of R1 to R4 is an —SO2NR9R10 substituted alkyl, aryl or aralkyl group, and An represents a counter anion, provided that if the counter anion is present in the molecule, An is absent.
A method of producing a cyan toner comprising cyan toner particles, wherein the cyan toner particles are polymer cyan toner particles produced by:
- mixing at least a polymerizable monomer, a coloring compound having a structure represented by the Formula (1):
- wherein R1 to R4 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl or a substituted or unsubstituted aralkyl group;
- R5 and R6 each independently represents a hydrogen atom or an alkyl group;
- R7 and R8 each independently represents a hydrogen atom, a sulfonic acid group, a substituted or unsubstituted amino group or —SO2NR9R10;
- R9 and R10 each independently represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group, provided that R9 and R10 may form a heterocycle together with the nitrogen atom;
- and n represents an integer of 1 to 3, and wherein if either R7 or R8 is not —SO2NR9R10, at least one of R1 to R4 is an —SO2NR9R10 substituted alkyl, aryl or aralkyl group, and An represents a counter anion, provided that if the counter anion is present in the molecule, An is absent, and a polymerization initiator to prepare a polymerizable monomer composition;
- dispersing the polymerizable monomer composition into an aqueous medium to form particles of the polymerizable monomer composition;
- and
- polymering the polymerizable monomer contained in the particles of the polymerizable monomer composition in the aqueous medium.
Dependencies are inferred from the claim text.