| 摘要 |
A process for obtaining smudge resistant images and for preventing the deposition of unwanted toner particles in an imaging apparatus which comprises (a) providing a xerographic imaging apparatus, (b) adding an improved two component contamination free developer composition to said apparatus, which composition consists essentially of from about 50 percent to about 80 percent by weight of a resin comprised of the polymeric esterification product of a dicarboxylic acid and a diol comprising a diphenol of the following formula <IMAGE> wherein R is selected from substituted and unsubstituted alkylene radicals having from about 2 to about 12 carbon atoms, alkylidene radicals having from 1 to 12 carbon atoms and cycloalkylidene radicals having from 3 to 12 carbon atoms; R' and R'' are selected from substituted and unsubstituted alkylene radicals having from 2 to 12 carbon atoms, alkylene arylene radicals having from 8 to 12 carbon atoms and arylene radicals; X and X'; are selected from hydrogen or any alkyl radical having from 1 to 4 carbon atoms; and each n is a number of from 0 (zero) to 4, about 20 percent to about 50 percent by weight of magnetite and a carrier material consisting of a steel core coated with a polymethyl methacrylate resin or a polyvinylidene fluoride resin, (c) forming electrostatic latent images in the imaging apparatus, and (d) developing the images formed.
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