Patent ID: 8592112

Claim:
An orange toner comprising a binder resin and a coloring agent, wherein the binder resin contains a polyester resin having a dodecenyl succinic acid structure; the coloring agent contains C.I. Pigment Orange 38 in a content of from about 5% by mass to about 18% by mass relative to the whole mass of the toner; and the toner is satisfying the following formulae (a) to (c): 0.05 mg/L≦(Na ion amount)≦0.3 mg/L (a) 0.3 mg/L≦(NH 4 ion amount)≦1.0 mg/L (b) 1.0≦(NH 4 ion amount)/(Na ion amount)≦5.0 (c) wherein each of Na ion amount and NH 4 ion amount is a value detected by weighing 0.5 g of the toner, adding the toner to 100 g of ion-exchanged water at 30±1° C. dispersing it for 30 minutes by an ultrasonic disperser, filtering the dispersion and then analyzing the filtrate by ion chromatography.