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: An improved toner composition comprised of resin particles, and pigment particles surface treated with charge enhancing additives selected from the group consisting of homopolymers of amine containing monomers, copolymers containing amine monomers, quaternary ammonium salt compounds, polymeric amines, polymeric quaternary ammonium compounds, telomeric amines and telomeric quaternary ammonium salt compositions, and wherein the charge enhancing additives are associated with the pigment particles.