Title:
NEGATIVELY CHARGEABLE TONER AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2015/080272
Kind Code:
A1
Abstract:
The present invention provides a method for manufacturing a negatively chargeable toner which, even when manufactured by a polymerization method, has narrow grain size distribution, as well as a negatively chargeable toner which exhibits exceptional balance between low-temperature fixability and heat-resistant preservability, has excellent thin-line reproducibility, and hardly generates fogging, even in high-speed printing. A negatively chargeable toner including color resin particles containing at least a binding resin, a coloring agent, a charging control agent, and a softening agent, wherein the negatively chargeable toner is characterized in that the charging control agent is a copolymer obtained by copolymerizing a vinyl aromatic hydrocarbon, (meth)acrylate, and sulfonic-acid-group-containing (meth)acrylamide, the copolymerization rate of the sulfonic-acid-group-containing (meth)acrylamide being 0.8-4.0 mass%, and the softening agent is a monoester compound and/or a polyglycerol ester compound.
Inventors:
TAGUCHI HIROYUKI (JP)
KUROKAWA HISASHI (JP)
KUROKAWA HISASHI (JP)
Application Number:
PCT/JP2014/081644
Publication Date:
June 04, 2015
Filing Date:
November 28, 2014
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
G03G9/097; G03G9/08; G03G9/087; G03G9/09
Foreign References:
| JP2013214005A | 2013-10-17 | |||
| JP2006078982A | 2006-03-23 | |||
| JP2003043752A | 2003-02-14 | |||
| JP2012078809A | 2012-04-19 | |||
| JP2006276293A | 2006-10-12 | |||
| JP2007133113A | 2007-05-31 |
Attorney, Agent or Firm:
KISHIMOTO, Tatsuhito et al. (JP)
Kishimoto Expert (JP)
Kishimoto Expert (JP)
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