Patent ID: 8227160

Claim:
A toner for electrophotography comprising a charge control agent comprising an iron-azo complex represented by the formula (I): wherein each of R 1 and R 2 is a halogen atom, each of R 3 and R 4 is a —CO—NH—(C 6 H 5 ) group, X p+ is a hydrogen ion, sodium ion, or ammonium ion, and p is an integer of 1 or 2, or a metal compound of a benzilic acid derivative represented by the formula (II): wherein M is boron, a is an integer of 2 or more, and b is an integer of 1 or more; a colorant; and a resin binder comprising a polyester, wherein the polyester is a polyester obtained by polycondensing an alcohol component comprising a propylene oxide adduct of bisphenol A represented by the formula (III): wherein each of R 5 and R 6 is independently —CH(CH 3 )CH 2 -and/or —CH 2 CH(CH 3 )—, and m and n may be identical or different, wherein m and n are positive numbers, and a carboxylic acid component, wherein an average added number of moles of propylene oxide per one mole of bisphenol A is from 2.4 to 4.0, and wherein an adduct with 2 moles of propylene oxide is contained in an amount of 60% by mole or less, and an adduct with 4 moles of propylene oxide is contained in an amount of 10% by mole or more, of the propylene oxide adduct of bisphenol A, and wherein the propylene oxide adduct of bisphenol A has a content ratio of primary hydroxyl groups of 10% by mole or less of entire hydroxyl groups in the compounds represented by the formula (III).