Patent ID: 8092968

Claim:
A toner comprising a plurality of toner particles containing a binder resin and a colorant, wherein, according to measurement by a flow particle image analyzer, (a) a content of small size particles which are toner particles having a circle-equivalent diameter of 0.5 μm or more and 2.0 μm or less is 5% by number or less based on the entire toner particles, (b) a content of medium size particles which are toner particles having a circle-equivalent diameter larger than 2.0 μm and 4.0 μm or less is 20% by number or more and 30% by number or less in term of the number based on the total toner particles, (c) a content of large size particles which are toner particles having a circle-equivalent diameter above 4.0 μm and 6.0 μm or less is 50% by number or more and 70% by number or less based on the entire toner particles, and a shape factor SF 1 of the toner particles is 130 or more and 140 or less.