| abstract |
To provide a toner having sufficiently high circularity of toner particles and excellent charging characteristics. The toner of the present invention is a toner composed of toner particles having a core region containing a resin material and a colorant, and a shell region covering the core region and having a composition different from that of the core region. Further, the average value (average circularity) of the circularity R of the toner particles represented by the following formula (I) is 0.92 or more, and a linear alkyl group is included in the shell region. It is characterized by containing 0.05 to 0.6 wt% of alkylbenzene sulfonate having. R = L 0 / L 1 (I) (Where L 1 [μm] is the circumference of the projected image of the toner particles to be measured, and L 0 [μm] is the circumference of a perfect circle having an area equal to the area of the projected image of the toner particles to be measured) Represents length) [Selection figure] None |