Magnetite toner processes
AssigneeXerox Corporation
InventorsRaj D. Patel, Michael A. Hopper, Joseph Bartel, Edward G. Zwartz
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Abstract
A toner process comprising heating an acidified dispersion of an acicular magnetite, a carbon black colorant dispersion, an optional wax dispersion, and an acicular latex.
Claims32
A toner process comprising heating a mixture of an acidified dispersion of an acicular magnetite with a colorant dispersion of carbon black, a wax dispersion, and an acidic latex emulsion, and wherein said heating comprises a first heating and a second heating, and wherein the second heating is at a higher temperature than the first temperature;
- and wherein said second heating is equal to about or above about the glass transition temperature of a polymer contained in said acidic latex.
A toner process comprising heating an acidified dispersion of an acicular magnetite, a carbon black colorant dispersion, an optional wax dispersion, and a latex, and which heating comprises a first heating and a second heating, and wherein the first heating is accomplished below the glass transition temperature (Tg) of a resin contained in said latex, and wherein the second heating is above the glass transition temperature of a resin contained in said latex.
A toner process consisting essentially of heating a mixture of an acidified dispersion of an acicular magnetite with a colorant dispersion of carbon black, a wax dispersion, and an acidic latex emulsion, and wherein said heating comprises a first heating and a second heating, and wherein the second heating is at a higher temperature than the first heating;
- and wherein said first heating is equal to about or above about the glass transition temperature of a polymer contained in said latex.
Dependencies are inferred from the claim text.