摘要:
Dry electrographic toner compositions are provided comprising a plurality of dry toner particles, wherein the toner particles comprise polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions. The dry electrographic toner composition comprises a wax associated with the dry toner particles, wherein substantially all of the wax is associated with the toner particle at the surface thereof. Methods of making electrographic toner compositions are also provided comprising preparing polymeric binder particles comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions, preparing toner particles, drying the toner particles, and milling the dry toner particles in the presence of a wax component to provide a dry toner particle composition having the wax associated with the toner particles. These toner compositions provide images having excellent durability and erasure resistance properties at low fusion temperatures and with little undesired offset.
摘要:
The present invention provides an intermediate transfer member onto which a toner image is formed as a first image bearing member, and to which the toner image is first transferred and from which the first transferred toner image is transferred a second time onto a second image bearing member; the intermediate transfer member comprising; a non-conductive flexible film layer, a layer of an electrically conductive material affixed to a first surface of the non-conductive flexible film layer, and the electrically conductive material layer having an electrically resistive polymeric coating thereon.
(a) an overcoat layer comprising a rheology modifier and a polymeric resin selected from the group consisting of urethane resins, urethane-epoxy resins, acrylated-urethane resins, urethane-acrylic resins, and combinations thereof. (b) at least a charge transport material; (c) at least a charge generating material; and (d) an electrically conductive substrate.
摘要:
Dry electrographic toner compositions are provided comprising a plurality of dry toner particles, wherein the toner particles comprise polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions. The dry electrographic toner composition comprises a wax associated with the dry toner particles, wherein substantially all of the wax is associated with the toner particle at the surface thereof. Methods of making electrographic toner compositions are also provided comprising preparing polymeric binder particles comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions, preparing toner particles, drying the toner particles, and milling the dry toner particles in the presence of a wax component to provide a dry toner particle composition having the wax associated with the toner particles. These toner compositions provide images having excellent durability and erasure resistance properties at low fusion temperatures and with little undesired offset.
摘要:
The present invention provides a liquid electrophotographic ink comprising a liquid carrier, having a Kauri-Butanol number less than 30 and comprising at least some C 10 , C 11 and C 12 hydrocarbons, a polymeric binder, a colorant, and a fluid material having an antagonistic odor vector for C 10 , C 11 and C 12 hydrocarbons and a method of reducing odor emitted from an electrographic ink comprising mixing a) a liquid carrier having a Kauri-Butanol number less than 30 and comprising at least some C 10 , C 11 and C 12 hydrocarbons, b) a polymeric binder, c) a colorant, and d) a fluid material having an antagonistic odor vector for C 10 , C 11 and C 12 hydrocarbons. Electrographic ink compositions display reduced malodor effects when at least one antagonistic odor vector compound for C 10 , C 11 and C 12 hydrocarbons is present in the ink composition. The use of appropriate amounts of the antagonistic odor vector compounds for C 10 , C 11 and C 12 hydrocarbons does not adversely affect the functional imaging properties of the ink.
摘要:
A method and apparatus of the invention includes a method of removing airborne hydrocarbons from liquid electrophotographic printer exhaust comprises generating airborne hydrocarbon droplets as either vapor or mist during the transportation of electrophotographic ink or toner, directing substantially all of the air and hydrocarbon droplet mixture to a central collection point, forcing the air/droplet mixture to and through an oleophilic, substantially non-leaching collection media (34), and exhausting substantially hydrocarbon-free air from the electrophotographic printer. The method may further comprise inducing pressure in the printer with air pressure reduction to pull the exhaust through the collection media (34), for example with a pump or fan (720) used to produce air pressure reduction. The method may comprise inducing airflow in the printer with ventilation holes or by the addition of a fan (720) to provide a fresh air inlet. The air/hydrocarbon mixture may be directed to the collection media (34) by a transportation system.
摘要:
A photoreceptor that includes: (a) an overcoat layer comprising a rheology modifier and a polymeric resin selected from the group consisting of urethane resins, urethane-epoxy resins, acrylated-urethane resins, urethane-acrylic resins, and combinations thereof. (b) at least a charge transport material; (c) at least a charge generating material; and (d) an electrically conductive substrate.