Colored toner compositions
AssigneeXerox Corporation
InventorsGuerino Sacripante, Beng S. Ong, Michael J. Levy, Richard B. Lewis
Life of this patent
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Abstract
A colored magnetic encapsulated toner composition comprised of a core comprised of a polymer binder, a colorless or light colored magnetic material, a color pigment, dye or mixture thereof excluding black, and a whitening agent; and which core is encapsulated in a polymeric shell containing a metal oxide.
Claims55
A colored magnetic encapsulated toner composition consisting essentially of a core comprised of a polymer binder, a colorless or lightly colored magnetic material, a color pigment, dye or mixture thereof excluding black, and a whitening agent;
- and which core is encapsulated in a polymeric shell containing a metal oxide or a mixture of metal oxides, which metal oxide or metal oxides has been surface treated with a silane component and wherein the said encapsulated toner composition has a volume resistivity of from about 10.sup.3 ohm-cm to about 10.sup.8 ohm-cm.
A colored conductive magnetic encapsulated toner composition consisting essentially of a core consisting essentially of a polymer binder, a substantially colorless magnetic material, a color pigment excluding black, and a whitening agent present in an amount of from about 1 to about 20 weight percent;
- and which core is encapsulated in a polymeric shell containing thereon a conductive metal oxide powder;
- and wherein the toner has a volume resistivity of from about 10.sup.3 ohm-cm to about 10.sup.8 ohm-cm.
A colored magnetic encapsulated toner composition consisting essentially of a core comprised of a polymer binder, a grayish color magnetic material, a pigment, and a whitening agent presnt in an amount of from about 1 to about 20 weight percent and selected from the group consisting of aluminum oxide, barium oxide, calcium carbonate, calcium oxide, magnesium oxide, magnesium stearate, titanium oxide, tin oxide, zinc oxide, and zinc stearate;
- and wherein the core is encapsulated in a polymeric shell containing a metal oxide and wherein said encapsulated toner composition has a volume resistivity of from about 10.sup.3 ohm-cm to about 10.sup.8 ohm-cm.
An encapsulated toner consisting essentially of a core comprised of a polymer binder, colored pigment particles, a substantially colorless, or lightly colored magnetic material, and a whitening agent present in an amount of from about 1 to about 20 weight percent and selected from the group consisting of aluminium oxide, barium oxide, calcium carbonate, calcium oxide, magnesium oxide, magnesium stearate, titanium oxide, tin oxide, zinc oxide, and zinc stearate, which core is encapsulated in a polymeric shell containing colorless conductive components comprised of mixed oxides of tin and bismuth;
- mixed oxides of tin and antimony;
- mixed oxides of tin and tantalum;
- mixed oxides of tin and niobium;
- mixed oxides of titanium and bismuth;
- mixed oxides of titanium and antimony;
- mixed oxides of titanium an tantalum;
- mixed oxides of titanium and niobium.
Dependencies are inferred from the claim text.