Liquid developer processes
AssigneeXerox Corporation
InventorPeter G. Odell
Life of this patent
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Abstract
A process for the preparation of a liquid developer comprised of thermoplastic resin particles, pigment, a charge additive or adjuvant, and a charge director, which process comprises a supercritical solvent extraction to enable a developer with a high solids content.
Claims19
A process for the preparation of a liquid developer consisting essentially of a hydrocarbon liquid vehicle, thermoplastic resin particles, pigment, a charge additive or adjuvant, and a charge director, which process consists essentially of a supercritical solvent extraction of said liquid vehicle and wherein said liquid developer possesses a high solids content.
A process for the preparation of a liquid developer consisting essentially of a liquid vehicle, thermoplastic resin particles, pigment, a charge adjuvant and a charge director, which process consists essentially of the supercritical carbon dioxide solvent extraction of said liquid vehicle of said developer and wherein said liquid developer possesses a high solids content of from about 50 to about 90 weight percent, and wherein the solids are comprised of thermoplastic resin particles, pigment, and charge adjuvant.
A process for the preparation of a liquid developer comprised of a hydrocarbon liquid vehicle, thermoplastic resin particles, pigment, and a charge adjuvant, and which process consists essentially of accomplishing a super critical carbon dioxide solvent extraction of said liquid vehicle from said developer, and wherein said liquid developer possesses a high solids content of from about 30 to about 100 weight percent, and wherein said solids are comprised of thermoplastic resin particles, pigment particles, and charge adjuvant.
Dependencies are inferred from the claim text.