Patent ID: 7070898

Claim:
A toner obtained by polymerizing a polymerizable monomer composition comprising at least a polymerizable monomer, a wax and a colorant, wherein: the polymerizable monomer composition is polymerized using a polymerization initiator comprising a redox initiator which comprises an organic peroxide with a 10-hour half-life temperature of 86° C. or higher and a reducing agent; the toner has a ratio of a weight-average particle diameter to a number-average particle diameter (weight average particle diameter/number-average particle diameter) of 1.40 or less; the toner has top of a main-peak in a molecular weight range of 5,000 to 50,000 in a molecular weight distribution measured using a gel permeation chromatography (GPC) of a THF-soluble part thereof; and the toner contains t-butanol with a content of 0.1 to 1,000 ppm.