Emulsion/aggregation based toners containing a novel latex resin
AssigneeXerox Corporation
InventorsDaryl Vanbesien, Ke Zhou, Guerino 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.
Claims23
A toner comprised of a resin containing both an epoxy substituent and a carboxylic acid substituent, optionally a colorant and optionally a wax.
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 optionally 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 both a carboxylic acid substituent and an epoxy substituent, and wherein the binder is substantially non-crosslinked prior to fusing.
A process for forming an image on an image recording medium, comprising:
- applying a toner to an image recording medium to form an image, wherein the toner comprises at least one colorant and a toner binder that includes both a carboxylic acid substituent and an epoxy substituent, and wherein the binder is substantially non-crosslinked prior to fusing;
- fusing the toner on the image recording medium, wherein the fusing causes crosslinking of the toner binder;
- and
- whereby the image is fixed on the image recording medium.
Dependencies are inferred from the claim text.