Colorant dispersions

Abstract

A process for the preparation of colored dispersions which comprises adding colorant, a liquid vehicle, a free radical initiator, and a stable free radical agent to a microfluidizer; heating at a temperature of from about 100 to about 160° C.; and thereafter, optionally cooling.

What is claimed is: 
     
       1. A method of imaging comprising jetting with a liquid jetting means an ink jettable ink composition comprised of a liquid carrier vehicle and stabilized core particles comprised of resin, colorant, and a stabilizer component, which is covalently bonded to the core particles, in a predetermined pattern onto a receiving member to form an image; and fixing the image to a receiver by heating or irradiating the image and/or the receiver at from about 40 to about 150° C. 
     
     
       2. A method in accordance with claim 1 wherein the colorant is a pigment, and wherein there results high quality images with an optical density of from about 1.0 to about 1.5 for black images. 
     
     
       3. A method in accordance with claim 1 wherein the ink composition has a latency of about 5 seconds to about 2,000 seconds, wherein the heating or fixing of the image is accomplished at a temperature of about 25° C. to about 90° C., and wherein the resulting images possess an edge raggedness or an MFLEN value of from about 1 to about 10. 
     
     
       4. A method in accordance with claim 1 wherein the resulting developed images possess a resolution of at least about 600 spi when jetted from an ink jet printhead, and wherein there results essentially no kogation on the heating elements of the jetting nozzles after continuous jetting of the ink at a rate of from about 10 6  to about 10 9  drops.