| 摘要 |
A negatively charged developer composition comprised of a toner composition with an average particle diameter of from about 4 to about 9 microns containing a mixture of styrene butadiene copolymers, and styrene methacrylate copolymers; pigment particles selected from the group consisting of cyan, magenta, yellow, red, blue, green, brown, and mixtures thereof; first external additive particles of colloidal silica; second external additive particles of fatty acid metal salts; and carrier particles comprised of a ferrite core with a polymeric coating thereover, which coating has dispersed therein conductive particles.
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