Hybrid toner compositions
AssigneeXerox Corporation
InventorsRichard P. N. Veregin, Valerie M. Farrugia, Edward G. Zwartz
Life of this patent
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Abstract
A hybrid toner composition including a first wax; a second wax that is different from the first wax; wherein the first wax comprises a paraffin wax having a peak melting point of from about 60 to about 80° C.; wherein the second wax comprises an ester wax having a peak melting point of from about 60 to about 80° C.; a first resin comprising an amorphous polyester resin and at second resin comprising at least one of a styrene, an acrylate, or a combination thereof; and an optional colorant.
Claims24
A hybrid toner composition comprising:
- a first wax;
- a second wax that is different from the first wax;
- wherein the first wax comprises a paraffin wax having a peak melting point of from about 60 to about 80° C.;
- wherein the second wax comprises an ester wax having a peak melting point of from about 60 to about 80° C.;
- a first resin comprising an amorphous polyester and a second resin comprising at least one of a styrene, an acrylate, or a combination thereof;
- and
- an optional colorant.
A process for preparing a hybrid toner composition comprising:
- mixing a first latex resin comprising an amorphous polyester and a second latex resin comprising at least one of a styrene, an acrylate, or a combination thereof, an optional crystalline polyester latex, an optional colorant, a first wax, and a second wax that is different from the first wax;
- wherein the first wax comprises a paraffin wax having a peak melting point of from about 60 to about 80° C.;
- wherein the second wax comprises an ester wax having a peak melting point of from about 60 to about 80° C.;
- optionally, adding a coagulant to the mixture;
- heating the mixture to a temperature below the glass transition temperature of at least one of the first or second latex resin to form aggregated particles;
- heating the mixture to a temperature above the glass transition temperature of at least one of the first or second latex resin to coalesce the aggregated particles;
- and
- optionally, isolating the toner particles.
A process for preparing a hybrid toner having a core and a shell, comprising:
- mixing a first latex resin comprising an amorphous polyester and a second latex resin comprising at least one of a styrene, an acrylate, or a combination thereof, an optional crystalline polyester latex, an optional colorant, a first wax, and a second wax that is different from the first wax;
- wherein the first wax comprises a paraffin wax having a peak melting point of from about 60 to about 80° C.;
- wherein the second wax comprises an ester wax having a peak melting point of from about 60 to about 80° C.;
- to form a core mixture;
- optionally, adding a coagulant to the core mixture;
- heating the core mixture to a temperature below the glass transition temperature of at least one of the first latex resin or the second latex resin to aggregate the core mixture to form aggregated core particles;
- mixing a third latex resin comprising at least one styrene-acrylate resin and a coalescent agent to form a shell mixture;
- coating the shell mixture onto the aggregated core particles;
- heating the shell mixture and the aggregated core particles to a temperature above the glass transition temperature of at least one of the first latex resin, the second latex resin, or the third latex resin to coalesce the aggregated core particles to form toner particles;
- and
- optionally, isolating the toner particles.
A hybrid toner composition comprising:
- a first wax;
- a second wax that is different from the first wax;
- wherein the first wax comprises a paraffin wax;
- wherein the second wax comprises an ester;
- a first resin comprising an amorphous polyester and a second resin comprising at least one of a styrene, an acrylate, or a combination thereof;
- and
- an optional colorant.
Dependencies are inferred from the claim text.