Patent ID: 7537875

Claim:
A toner comprising toner particles which comprise toner base particles containing at least a colorant, a release agent and a polar resin; said polar resin is a resin having at least a polyester unit, synthesized in the presence of an aromatic carboxylic acid titanium compound used as a catalyst, wherein said aromatic carboxylic acid titanium compound is a compound obtained by the reaction of an aromatic carboxylic acid with a titanium alkoxide, wherein said aromatic carboxylic acid is selected from the group consisting of an isophthalic acid and a terephthalic acid; said polar resin has an acid value of from 3 mgKOH/g to 35 mgKOH/g; said toner base particles have been granulated in an aqueous system by suspension polymerization, emulsion polymerization or suspension granulation; said toner has a weight average particle diameter of from 4.0 μm to 10.0 μm; and said release agent is contained in an amount of from 6 to 18 parts by weight based on 100 parts by weight of the toner base particles.