| 摘要 |
A toner is provided that contains: (A) a binder resin; (B) a colorant; (C) a charge controlling agent; and (D) an additive; wherein the binder resin (A) contains: a polyester resin containing no tetrahydrofuran-insoluble component; and having a molecular weight distribution wherein components having a molecular weight not greater than 5x10<SUP>2 </SUP>are present in an amount of 4% or less by weight, and wherein a main peak is present in a molecular weight range of from 3x10<SUP>3 </SUP>to 9x10<SUP>3 </SUP>when the molecular weight distribution is determined by gel permeation chromatography; wherein the charge controlling agent (C) contains: a metal salt of salicylic acid or salicylic acid derivative; and wherein the additive (D) contains: a hydrophobized silica having a primary particle diameter of from 0.01 to 0.03 mum; and a hydrophobized titanium oxide having a primary particle diameter of from 0.01 to 0.03 mum and a specific surface area of from 60 to 140 m<SUP>2</SUP>/g, wherein the hydrophobized titanium oxide is prepared by surface-treating a particulate titanium oxide prepared by a wet process, wherein the hydrophobized titanium dioxide has one or more water-soluble components in an amount of 0.2% or more by weight, and has a transmittance not less than 35% for light having a wavelength of 300 nm and a transmittance not less than 80% for light having a wavelength of 600 nm; and its use in a developer, an image forming method, image forming apparatus and a process cartridge containing the toner. |
