Abstract: A toner composition comprised of resin particles, pigment particles, and submicron colloidal domains of an ionomeric polymer or an interpolymer complex comprising a first polymer and a second polymer, preferably, independently selected from the group consisting of an ionophoric polymer and the ionomeric polymer. The ionomeric polymer and interpolymer complex are optionally complexed to a Lewis acid, a salt, or an ion thereof.

Abstract: A process for the preparation of toner compositions with excellent humidity characteristics and comprised of resin particles, and pigment particles which comprises adding thereto metal oxide particles surface treated with a metal salt complex charge enhancing additive.

Abstract: Disclosed is a process for forming two-color images 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 colored developer comprising a colored first toner comprising a polymer resin selected from the group consisting of styrene-butadiene copolymers, styrene-acrylate copolymers, styrene-methacrylate copolymers, and mixtures thereof, a blue first colored pigment of the formula C.sub.32 H.sub.16 N.sub.

Abstract: A process for avoiding, or minimizing toner contamination of electrodes in a scavengeless electrophotographic imaging apparatus which comprises adding to the donor roll present in said apparatus a toner comprised of resin, pigment, charge additive, and a metal oxide, or a mixture of metal oxides.

Abstract: A process for the preparation of a toner with a melting point of from about 100.degree. to about 130.degree. C. which comprises the addition of a linear crystalline polyethylene with a weight average molecular weight of from about 500 to about 1,200 to a toner comprised of a polyester and pigment.

Abstract: Disclosed is an improved toner composition comprised of resin particles, pigment particles, and present on the surface thereof additives comprised of a charge enhancing component sorbed on a flow aid composition.

Abstract: Disclosed is a process for forming two-color images which comprises charging an imaging member, creating on the member a latent image comprising areas of high, medium, and low potential, developing the low areas of potential with a developer comprising a specific colored toner and a specific carrier as described herein, subsequently developing the high areas of potential with a developer comprising a specific black toner and a specific carrier as described herein, transferring the developed two-color image to a substrate, and permanently affixing the image to the substrate.

Abstract: Disclosed is an improved stable colored toner composition comprised of resin particles, colloidal silica additive particles, and colored pigment particles; and wherein each of the toners are encapsulated in a continuous shell from about 1 to about 30 percent by weight of a waxy substance with a molecular weight of from about 500 to about 20,000.

Abstract: A developer composition comprised of a toner composition having dispersed therein resin particles, pigment particles, and carrier particles comprised of a core with a coating thereover, which coating has incorporated therein colorless copper iodide enabling carriers with a conductivity of from about 10.sup.-6 to 10.sup.-8 ohm-cm.

Abstract: The invention is a single component development system including a housing with a sump containing a supply of toner, an ultrasonic transducer having one end extending into the source of the toner and the other end disposed adjacent a photoreceptor, and a current source electrically connected to the ultrasonic transducer to charge the toner and move the toner from the sump to the photoreceptor.

Abstract: An improved positively charged developer compositions comprised of toner compositions containing resin particles, pigment particles and modified charge enhancing additives comprised of flow aid compositions having chemically bonded thereto, or chemiadsorbed on the surface thereof amino alcohol derivatives comprising at least one hydroxyl group, and at least one amino substituent selected from the group consisting of primary amines, secondary amines, and tertiary amines; and carrier particles.

Abstract: Disclosed are positively charged toner compositions comprised of resin particles, pigment particles, and imide charge enhancing additives of the formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3, are alkyl groups containing from 1 carbon atom to about 25 carbon atoms, R.sub.4 is selected from the group consisting of hydrogen, nitro, halogen, amino, and alkyl and A is an anion.

Abstract: This invention relates to improved positively charged toner compositions for use in developing electrostatic images contained in electrostatographic imaging devices wherein fusing is accomplished with a fuser roll fabricated from lead oxide and a vinylidene fluoride hexafluoropropylene copolymer, which composition is comprised of resin particles, pigment particles, and as the charge enhancing additive present in an amount of from about 0.1 percent by weight to about 10 percent by weight, a pyridinium tetrafluoroborate of the following formula: ##STR1## wherein R.sub.1 is an alkyl group containing from about 1 carbon atom to about 22 carbon atoms, and R.sub.2 is an alkyl group containing from about 1 carbon atom to about 8 carbon atoms, or a halogen, and n is zero or 1.

Abstract: Developer composition with a negative charge enhancing additive is disclosed.

Abstract: This invention is generally directed to an improved positively charged dry electrostatic toner composition comprised of resin particles, pigment particles, a low molecular weight waxy material having a molecular weight of from 500 to about 20,000, and from about 0.5 percent to about 10 percent by weight of a charge enhancing additive selected from the group consisting of alkyl pyridinium halides, organic sulfonate compositions and organic sulfate compositions, of the following formulas: ##STR1## wherein R is a hydrocarbon group containing about 8 to about 22 carbon atoms, and A is an anion, and ##STR2## wherein R.sub.1 is an alkyl group containing from about 12 carbon atoms to about 22 carbon atoms, R.sub.2 and R.sub.3 are independently selected from alkyl groups containing from about 1 carbon atom to about 5 carbon atoms, R.sub.4 is an alkylene group containing from about 1 carbon atom to about 5 carbon atoms, R.sub.

Abstract: This invention relates to improved positively charged toner compositions for use in developing electrostatic images contained in electrostatographic imaging devices wherein fusing is accomplished with a fuser roll fabricated from lead oxide and a vinylidene fluoride hexafluoropropylene copolymer, which composition is comprised of resin particles, pigment particles, and as the charge enhancing additive present in an amount of from about 0.1 percent by weight to about 10 percent by weight, a pyridinium tetrafluoroborate of the following formula: ##STR1## wherein R.sub.1 is an alkyl group containing from about 1 carbon atom to about 22 carbon atoms, and R.sub.2 is an alkyl group containing from about 1 carbon atom to about 8 carbon atoms, or a halogen, and n is zero or 1.

Abstract: This invention relates to a process for rapidly charging uncharged toner particles to a positive polarity, which comprises adding uncharged toner particles to a positively charged developer composition comprising carrier particles and toner particles, the charged and uncharged toner particles containing conductive particles or conductive patches on their surface, which conductive patches are of a higher positive triboelectric charge than the toner polymer, contacting the charged toner particles with the uncharged toner particles causing positive charges to be transferred from the conductive particles on the charged toner particles, to conductive particles on the uncharged toner particles, within a period of from about 5 seconds to about 2 minutes, thereby resulting in substantially the same level of positive charge intensity for both the original charged toner particles and the added toner particles, such charge intensity ranging from about 5 microcoulombs per gram to about 50 microcoulombs per gram.