Hybrid toner processes
AssigneeXerox Corporation
InventorsRaj D Patel, Guerino G Sacripante, Edward G Zwartz, Enno E Agur, Allan K Chen, T. Hwee Ng, Kimberly D Nosella, Cuong Vong, Karen A Moffat
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Abstract
A toner process that includes a first heating of a colorant dispersion, a first polyester resin free latex emulsion, a second polyester latex emulsion, and a wax dispersion in the presence of a coagulant containing a metal ion; adding a third polyester free latex; adding an organic sequestering compound or a silicate salt sequestering compound, followed by a second heating.
Claims16
A process comprising heating a mixture of colorant dispersion, a first resin latex, a second crystalline resin latex, and a coagulant, and wherein said heating involves a first heating, followed by the addition of a third latex containing a vinyl polymer enabling the formation of a shell, and subsequently accomplishing a second heating, and which second heating is at a higher temperature than said first heating, and wherein said second heating is above about the glass transition temperature of said first latex, and said second heating is accomplished in the presence of a sequestering compound, and wherein the first resin latex and second resin latex are free of a polyester, and the second latex resin is a crystalline polyester.
A process comprising heating a mixture of colorant, a first polyester free latex, and a second crystalline polyester latex in the presence of a coagulant, and wherein said heating comprises a first heating equal to or below about the glass transition temperature of a first polymer contained in said first latex, followed by the addition of a third latex free of a polyester enabling the formation of a shell and a second heating equal to or above the glass transition temperature of a first polymer contained in said first latex wherein said first heating enabling the formation of aggregates, and said second heating enabling the fusion of said aggregates;
- and optionally wherein there is added prior to fusion a sequestering component.
Dependencies are inferred from the claim text.