| 摘要 |
A liquid developer comprised of a nonpolar liquid, resin, optional colorant, a charge director, and an optional charge control agent, and wherein the charge director is comprised of a mixture of phosphoric acid esters I, II and III, and IV a nonpolar liquid soluble organic aluminum complex of the formulas <IMAGE> I <IMAGE> II <IMAGE> III ures thereof, wherein R1 is selected from the group consisting of hydrogen and alkyl, and n represents a number of from about 1 to about 6.
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