Toner compositions
AssigneeXerox Corporation
InventorsRobert D. Bayley, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Susan J. LaFica
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Abstract
A process includes forming particles in a latex by emulsion polymerization of a mixture including one or more monomers in an emulsion, and about 4 percent or less by weight of the mixture of a non-surfactant-based charge control agent, the non-surfactant-based charge control agent is distributed within a matrix of the particles, and forming toner particles from the particles in the latex, the toner particles supporting a sufficient triboelectric charge for use under A-zone environmental conditions in a single-component development system.
Claims20
A process comprising:
- forming particles in a latex by emulsion polymerization of a mixture comprising:
- one or more monomers in an emulsion;
- and
- less than about 4 percent by weight of the mixture of a non-surfactant-based charge control agent, wherein the non-surfactant-based charge control agent is distributed within a matrix of the particles;
- and
- forming toner particles from the particles in the latex, the toner particles supporting a sufficient triboelectric charge for use under A-zone environmental conditions in a single-component development system.
A process comprising
- polymerizing by emulsion polymerization a mixture comprising:
- one or more monomers in an emulsion;
- about 1 percent or less by weight of the mixture of a negatively charged charge control agent;
- wherein the polymerizing step provides a latex with the non-surfactant-based charge control agent distributed within a matrix of the latex;
- and
- forming by emulsion aggregation/coalescence a plurality of toner particles;
- wherein the plurality of toner particles support a sufficient triboelectric charge for use under A-zone environmental conditions in a single-component development system.
A toner particle comprising a core-shell configuration, the particle comprising:
- a copolymer resin;
- less than about 4 percent by weight of the toner particle of zinc salicylate disposed within a matrix of the copolymer resin;
- a wax;
- and
- an optional colorant;
- wherein the toner particle supports a triboelectric charge in a range from about from about −50 microcoulombs/gram to −70 microcoulombs/gram under A-zone environmental conditions in a single-component development system.
Dependencies are inferred from the claim text.