Loading patent…
AssigneeE Ink Corporation
InventorsLee Yezek, Andrew Drabek, Luke M. Slominski, Jennifer M. Morrison, Stephen J. Telfer, Brian Steinberg
Estimating the term…
Polymer shells similar to those described in U.S. Pat. No. 6,822,782 can be formed on pigment particles by (a) physi-sorping a reagent comprising polymerizable groups on to the pigment particles by treating the particle with a reagent having a polymerizable or polymerization-initiating group, such that the reagent will not desorb from the particle surface when the particle is placed in a hydrocarbon medium; or (b) treating pigment particles bearing nucleophilic groups with a reagent having a polymerizable or polymerization-initiating group, and an electrophilic group, thus attaching the polymerizable or polymerization-initiating groups to the particle surface. The zeta potential of the pigment particles can be varied by a process similar to (b) but using a reagent which does not have a polymerizable or polymerization-initiating group.
A process for treatment of pigment particles, the process comprising physi-sorping a reagent comprising polymerizable groups on to the surfaces of the pigment particles by treating the particle with a solution of a reagent having a polymerizable or polymerization-initiating group, thereby causing the reagent to become physi-sorbed on to the particle surface such that the reagent will not desorb from the particle surface when the particle is placed in a hydrocarbon medium,
A process for treatment of pigment particles, the process comprising physi-sorping a reagent comprising polymerizable groups on to the surfaces of the pigment particles by treating the particle with a solution of a reagent having a polymerizable or polymerization-initiating group, thereby causing the reagent to become physi-sorbed on to the particle surface such that the reagent will not desorb from the particle surface when the particle is placed in a hydrocarbon medium,
Dependencies are inferred from the claim text.