Charge controlling agent for electrostatic image development, and toner and charge-imparting material employing it

摘要

A charge controlling agent for electrostatic image development, which is a metallic compound of a compound of the formula (I): <CHEM> wherein each of A and R is a substituted or unsubstituted aromatic ring residue, and -O and -CONH-R are bonded to positions adjacent to each other on the aromatic ring residue A, or the formula (II): <CHEM> wherein each of A<1>, A<2>, R<1> and R<2> is a substituted or unsubstituted aromatic ring residue, n is an integer, and -O and -CONHR<1>, and -O and -CONH-R<2>, are bonded to positions adjacent to each other on the aromatic ring residues A<1> and A<2>, respectively.