Encapsulated gyricon spheres
AssigneeXerox Corporation
InventorsNaveen Chopra, Peter M. Kazmaier, Karen A. Moffat, Paul J. Gerroir
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Abstract
A particulate encapsulated Gyricon element includes a Gyricon sphere encapsulated within a shell that also contains a dielectric fluid in which the Gyricon sphere is able to rotate. The shell is preferably formed around the Gyricon sphere and the dielectric fluid by interfacial condensation polymerization. Display elements such as electric paper can be readily derived by coating the encapsulated Gyricon elements upon a substrate. Display elements can thus be readily achieved without the need for an expensive elastomer binder sheet or the need to have the sheet in contact with a dielectric fluid.
Claims8
A method of making an encapsulated Gyricon element comprised of an encapsulating shell containing a Gyricon sphere and a dielectric liquid, comprising encapsulating the Gyricon sphere and the dielectric liquid with the encapsulating shell by forming the shell by interfacial condensation polymerization in the presence of the Gyricon sphere and the dielectric liquid, wherein the interfacial condensation polymerization comprises coating the Gyricon sphere with a first composition containing a first monomer dissolved in an organic solvent, and optionally a dielectric liquid, and subsequently exposing the coated Gyricon sphere to a second composition containing a second monomer dissolved in an aqueous solvent, whereby the first monomer and the second monomer react to form the encapsulating shell. a dielectric liquid.
Dependencies are inferred from the claim text.