Patent ID: 8076465

Claim:
A method for manufacturing a charge control agent comprising: an initial chelating step of reacting a monoazo compound represented by the following chemical formula [1] and a trivalent metal chelating agent, to prepare an azo-type metal complex salt intermediate: wherein Ar 1 and Ar 2 are the same or different from each other, and are substituted or unsubstituted aromatic groups; a subsequent ion-exchanging step of reacting the azo-type metal complex salt intermediate and a composition for forming an ammonium counter ion including an inorganic ammonium salt and aqueous ammonia, to prepare an azo-type metal complex salt having an ammonium counter ion represented by the following chemical formula [2]: wherein M is a trivalent metal; B + is a cation other than ammonium ion; and n is a number from 0.70 to 1.00.