Emulsion/aggregation based toners containing a novel latex resin
AssigneeXerox Corporation
InventorsDaryl Vanbesien, Ke Zhou, Guenno G Sacripante
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Abstract
A toner is disclosed that includes a toner binder of a styrene/acrylate resin containing carboxylic acid substituents and epoxy substituents, and optionally a colorant and/or wax. The carboxylic acid substituents act as a curing agent and react with the epoxy substituents, causing rapid crosslinking of the toner. Curing occurs during the fusing process and at a temperature greater than 100° C.
Claims20
A toner comprised of toner particles, wherein the toner particles are comprised of a binder that includes at least one resin, a colorant and a wax, wherein a carboxylic acid substituent and an epoxy substituent are together in a same structure of the at least one resin, and the at least one resin is substantially non-crosslinked prior to fusing.
A method comprising:
- forming an emulsion comprising styrene, acrylate, a source for epoxy substituents, and a source for carboxylic acid substituents;
- forming a mixture by adding a colorant and a wax to the emulsion;
- homogenizing the mixture;
- adding an aggregating agent to the mixture and aggregating the mixture to form aggregated toner particles;
- and
- coalescing the aggregated toner particles to form coalesced toner particles having a binder that includes at least one resin, wherein a carboxylic acid substituent and an epoxy substituent are together in a same structure of the at least one resin of the binder, and wherein the at least one resin is substantially non-crosslinked prior to fusing.
A toner comprised of toner particles, wherein the toner particles are comprised of a binder that includes at least one resin, a colorant and a wax,
- wherein a carboxylic acid substituent and an epoxy substituent are together in a same structure of the at least one resin,
- wherein the at least one resin is substantially non-crosslinked prior to fusing, and
- wherein the at least one resin has the general formula:
- wherein R is a mixture of phenyl and carboxy-alkylate substituent, R′ is a hydrogen or methyl substituent, and R″ is a hydrogen or ethylcarboxylic acid substituent, and m, n and o represent an amount of segmental units of the resin that are randomly distributed within the resin, wherein the m is from about 60 to 95 units based on 100 total units, n is from about 4 to 30 units based on 100 total units and o is from about 1 to 10 units based on 100 total units.
Dependencies are inferred from the claim text.