| abstract |
PROBLEM TO BE SOLVED: To obtain a stable image which is excellent in cleaning properties and charging rise, does not cause fog or blotch even in a low-temperature and low-humidity environment, and has a high image density and no ghost. It is to provide a toner which can be used. SOLUTION: The present invention comprises at least a colorant, a binder resin, And a toner containing a sulfur-containing polymer, wherein the charge control agent is measured by gel permeation chromatography using tetrahydrofuran, comprising vinyl aromatic hydrocarbon, (meth) acrylate, and sulfonic acid group-containing (meth) acrylamide. Mass average molecular weight (M w) is a copolymer of 2000 ≦ Mw ≦ 15000, When the copolymerization ratio of the sulfonic acid group-containing (meth) acrylamide in the sulfur-containing polymer is 0.1 to 1.9% by mass, the amount of the sulfur-containing base in 100 parts by mass of the binder resin is added. Is 0.1 to 0.8 parts by mass, and the weight average particle size (D4) determined from the volume distribution of the toner is 3 to 1 0 μm, and the resin component of the toner has a tetrahydrofuran (THF) -insoluble content of 3 to 60% by mass. |