Patent ID: 7144668
Filing Date: 2006-12-05
Classification: G03G

Abstract:
1. A toner comprising toner particles each comprising at least a binder resin, a colorant, and a releasing agent, and inorganic fine particles, wherein: the binder resin comprises at least a polyester unit; a weight average particle diameter of the toner is in a range of 3.0 to 6.5 μn; an average circularity of particles in the toner each having a circle-equivalent diameter of 2 μn or more is in a range of 0.920 to 0.945; a BET specific surface area of the toner is in a range of 2.1 to 3.5 m a permeability of light of a wavelength of 600 nm in a liquid prepared by dispersing the toner in a 45 vol % aqueous solution of methanol is in a range of 30 to 80%.