Patent ID: 7318989

Claim:
A toner comprising: a toner material which comprises a binder resin and a colorant, wherein the toner has a substantially spherical shape with irregularities on its surface, and wherein a surface factor SF- 1 represented by the following Equation (1) that represents the sphericity of toner particles is 105 to 180 , a surface factor SF- 2 represented by the following Equation (2) that represents the degree of surface irregularities of the toner particles is such that the difference between the SF- 2 of toner particles whose particle diameter is smaller than the most abundant toner particle diameter in a particle size distribution and the SF- 2 of toner particles whose particle diameter is equal to or larger than the most abundant toner particle diameter in the particle size distribution is 8 or greater, and the toner particles have an inorganic oxide particle-containing layer within 1 μm from their surfaces SF- 1 =[(MXLNG) 2 /AREA]×(100π/4) Equation (1) where MXLNG represents the maximum length across a two-dimensional projection of a toner particle, and AREA represents the area of the projection SF- 2 =[(PERI) 2 /AREA]×(100/4π) Equation (2) where PERI represents the perimeter of a two-dimensional projection of a toner particle, and AREA represents the area of the projection.