| 摘要 |
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. |
