Yellow toner and production method therefor

Patent metadata

Field	Value
Publication number	US-9811014-B2
Application number	US-201514850003-A
Country	US
Kind code	B2
Filing date	Sep 10, 2015
Priority date	Mar 24, 2014
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

Provided is a toner having high coloring power and being excellent in light fastness. Specifically, provided is a yellow toner, including at least: a binder resin; a wax; and a colorant, in which the colorant contains a compound represented by the general formula (1).

First claim

What is claimed is:

1. A yellow toner, comprising:
a binder resin;
a wax; and
a colorant containing a compound represented by formula (1):

wherein R 1 represents an alkyl group, an aryl group, or an amino group;
R 2 represents a hydrogen atom, a cyano group, a carbamoyl group, an alkoxycarbonyl group, or a carboxamide group;
R 3 represents a hydrogen atom, an alkyl group, or an acyl group;
A independently represents an alkoxysulfonyl group, a carboxamide group, or a sulfonamide group; and
n represents an integer of from 2 to 5.

2. A yellow toner according to claim 1 , wherein in formula (1),
R 1 represents an alkyl group or an aryl group,
R 2 represents a cyano group or an alkoxycarbonyl group,
R 3 represents a hydrogen atom or an alkyl group, and
A represents a carboxamide group.

3. A yellow toner according to claim 1 , wherein in formula (1),
R 1 represents an alkyl group,
R 2 represents a cyano group,
R 3 represents an alkyl group, and
A represents a carboxy di(2-ethylhexyl)amide group.

4. A production method for a yellow toner, comprising the steps of:
preparing a polymerizable monomer composition containing a colorant, a wax, and a polymerizable monomer;
forming a particle of the polymerizable monomer composition in an aqueous medium; and
polymerizing the polymerizable monomer, which is contained in the particle of the polymerizable monomer composition, in the aqueous medium to provide a toner particle, wherein
the colorant contains a compound represented by formula (1):

in which R 1 represents an alkyl group, an aryl group, or an amino group;
R 2 represents a hydrogen atom, a cyano group, a carbamoyl group, an alkoxycarbonyl group, or a carboxamide group;
R 3 represents a hydrogen atom, an alkyl group, or an acyl group;
A independently represents an alkoxysulfonyl group, a carboxamide group, or a sulfonamide group; and
n represents an integer of from 2 to 5.

5. A production method for a yellow toner, comprising the steps of:
preparing a wax dispersion liquid having a wax dispersed in an aqueous medium;
preparing a resin particle dispersion liquid having a resin particle dispersed in an aqueous medium;
preparing a colorant dispersion liquid having a colorant dispersed in an aqueous medium;
aggregating the wax, the resin particle, and the colorant, which are contained in the wax dispersion liquid, the resin particle dispersion liquid, and the colorant dispersion liquid, respectively, by mixing the dispersion liquids with each other, to thereby form an aggregated particle; and
fusing the aggregated particle through heating, wherein
the colorant contains a compound represented by formula (1):

in which R 1 represents an alkyl group, an aryl group, or an amino group;
R 2 represents a hydrogen atom, a cyano group, a carbamoyl group, an alkoxycarbonyl group, or a carboxamide group;
R 3 represents a hydrogen atom, an alkyl group, or an acyl group;
A independently represents an alkoxysulfonyl group, a carboxamide group, or a sulfonamide group; and
n represents an integer of from 2 to 5.

Assignees

• Canon Kk

Inventors

• Mori Shosei
• Sekiguchi Takeshi
• Shintou Taichi
• Miyazaki Takeshi

Classifications

• G03G9/091 Primary

  Azo dyes · CPC title

• G03G9/0924

  Dyes characterised by specific substituents · CPC title

• G03G9/0806

  whereby chemical synthesis of at least one of the toner components takes place · CPC title