Charge control agent and toner for electrostatic image development
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United States of America Patent
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app pub date -
Apr 20, 2006
filing date -
Dec 6, 2002
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Abstract
A charge control agent of the present invention comprises aggregate particles of an azo-type iron complex salt represented by the following chemical formula [I] in the chemical formula [I], R.sup.1--, R.sup.2--, R.sup.3--, R.sup.4--, R.sup.5-- and R.sup.6-- are same or different to each other, n is 0.7 to 0.99, the aggregate particles have an average particle size of 1 to 4 microns and an average particle size of a primary particulate crystalline, that is fined the aggregate particles with ultrasonic irradiation, is at most 3 microns. A toner for developing an electrostatic image comprises a resin for the toner and the charge control agent.
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