Abstract: A negatively charged toner composition comprised of resin particles, pigment particles, and an aluminum charge enhancing additive obtained from the reaction of an aluminum inorganic salt solution, and xanthene carboxylic acid.

Abstract: A negatively charged toner composition comprised of resin particles, pigment particles, and an aluminum charge enhancing additive obtained from the reaction of an aluminum inorganic salt solution, and coumarin-3-carboxylic acid.

Abstract: A toner containing resin, pigment and an aluminum hydroxide charge additive, or the hydrates thereof, and developer compositions with the aforementioned toner and imaging processes thereof are disclosed.

Abstract: The range of differences in the triboelectric characteristics of various colored electrophotographic toners comprising pigments of different colors and having different triboelectric characteristics is narrowed by electrically passivating pigment particles with a continuous polymer coating on the surfaces of the pigment particles and dispersing the so-coated particles in a binder resin, which is subsequently pulverized to form toner particles.

Abstract: A process for enabling effective toner pigment dispersion which comprises dry blending toner resin, pigment, and a polymeric alcohol of the formulaCH.sub.3 (CH.sub.2).sub.n CH.sub.2 OHwherein n is a number of from about 15 to about 300; subsequently melt processing the aforementioned mixture by heating; cooling the mixture formed; micronizing the formed toner product and thereafter accomplishing classification thereof.

Abstract: An imaging process which comprises (1) charging an imaging member in an imaging apparatus (2) creating on the member a latent image comprising areas of high, intermediate, and low potential; (3) developing the low areas of potential with a first developer comprising carrier and a first toner comprised of resin, pigment excluding black and an aluminum complex charge enhancing additive; (4) developing the high areas of potential with a second developer comprising carrier and a second toner comprised of resin, pigment, and a charge enhancing additive that enables a positively charged toner; (5) transferring the resulting developed image to a substrate; and (6) fixing the image thereto.

Abstract: Negatively charged toner compositions comprised of resin particles, pigment particles, and as a charge enhancing additive metal salts of the following formula: ##STR1## wherein R is selected from the group consisting of hydrogen and aliphatic substituents; each x is of equal value and represents the number 1, 2, or 3; and M is selected from the group consisting of hydrogen and metals.

Abstract: An improved single component magnetic toner composition with a resistivity of from about 10.sup.13 to about 10.sup.16 ohm/cm, at 1,000 volts, and comprised of:(a) first resin particles of a styrene methacrylate copolymer grafted with or containing a low molecular weight wax composition;(b) second resin particles of a styrene, acrylate, acrylonitrile terpolymer;(c) a major amount of magnetite particles; and(d) islands or patches of carbon black particles in an amount of from about 0.1 percent to about 1 percent by weight, contained on the surface of the resin particles.

Abstract: This invention is directed to an improved cold pressure flexible toner composition comprised of a blend of two immiscible polymers selected from the group consisting of (1) a polymer of polystyene-co-stearylmethacrylate as a hard component, and poly[octadecyl vinyl ether-co-maleic anhydride] as a soft component, and (2) polyisobutylmethacrylate composition as a hard component, and poly[octadecyl vinyl ether-co-maleic anhydride], as a soft component, the soft component being present in an amount of from about 35 percent by weight to about 75 percent by weight, and the hard component being present in an amount of from about 25 weight percent to about 65 weight percent; and the use of such compositions for developing images in electrostatographic imaging systems.