| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a nonmagnetic one-component developing toner whereby high-quality images with little fog can be obtained continuously over a long period. SOLUTION: This toner comprises a binding resin, a coloring agent, and a charge controlling agent, the charge controlling agent being an organometallic compound of the formula. In the formula, R1 and R4 each represent a hydrogen atom, alkyl group, or aromatic ring (including condensed ring); R2 and R3 each represent an aromatic ring (including condensed ring); M represents one kind of trivalent metal selected from among Al, Fe, Ti, Co, and Cr; and X+ represents a cation.</p> |
