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US 5,395,724 AGranted
Curable liquid developers
AssigneeXerox Corporation
InventorsIan D. Morrison, Bing R. Hsieh, Jerry H. Taylor
Life of this patent
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AssigneeXerox Corporation
InventorsIan D. Morrison, Bing R. Hsieh, Jerry H. Taylor
Estimating the term…
Disclosed is a liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm. One embodiment of the invention is directed to an electrophoretic liquid developer comprising a substantial amount of a curable liquid vehicle having a viscosity of no more than about 20 centipoise and a resistivity of no less than about 5.times.10.sup.9 ohm-cm, a charge control agent, and colored particles capable of becoming charged and migrating through the liquid vehicle to develop an electrostatic latent image. Another embodiment of the invention is directed to a polarizable liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of from about 25 to about 500 centipoise and a resistivity of from about 10.sup.8 to about 10.sup.11 ohm-cm. Yet another embodiment of the invention is directed to a photoelectrophoretic liquid developer comprising a substantial amount of a curable liquid vehicle having a viscosity of no more than about 20 centipoise and a resistivity of no less than about 5.times.10.sup.9 ohm-cm and photosensitive colored particles. A specific embodiment of the invention is directed to a liquid developer comprising a colorant, a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm, and solid particles containing an initiator substantially insoluble in the liquid vehicle and capable, upon activation, of initiating polymerization of the curable liquid vehicle. In one embodiment, the colorant comprises pigment particles and the initiator is contained on the surfaces of the pigment particles. In another embodiment, the developer contains polymeric particles and the initiator is contained on the surfaces of the polymeric particles. In yet another embodiment, the colorant comprises toner particles which comprise a pigment and a polymer, and the initiator is contained on the surfaces of the toner particles. In still another embodiment, the initiator is contained on the surfaces of solid particles such as silicas, clays, or the like. The initiator can also be contained within the solid particles.
A liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm, wherein at least about 80 percent by weight of the liquid component of the developer comprises the curable liquid, said curable liquid being selected from the group consisting of epoxies, vinyl ethers, styrenes, indenes, vinyl acetals, ketene acetals, aliphatic a-olefins, and mixtures thereof.
A liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of from about 25 to about 500 centipoise and a resistivity of from about 10.sup.8 to about 10.sup.11 ohm-cm, wherein at least about 80 percent by weight of the liquid component of the developer comprises the curable liquid, said curable liquid being selected from the group consisting of epoxies, vinyl ethers, styrenes, indenes, vinyl acetals, ketene acetals, aliphatic .alpha.-olefins, and mixtures thereof.
A process for forming images which comprises generating an electrostatic latent image, contacting the latent image with a liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm, wherein at least about 80 percent by weight of the liquid component of the developer comprises the curable liquid, said curable liquid being selected from the group consisting of epoxies, vinyl ethers, styrenes, indenes, vinyl acetals, ketene acetals, aliphatic .alpha.-olefins, and mixtures thereof, and curing the liquid vehicle remaining on the developed image subsequent to development.
A liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm, wherein at least about 80 percent by weight of the liquid component of the developer comprises the curable liquid, wherein the liquid vehicle is selected from the group consisting of (a) decyl vinyl ether;
A liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of from about 25 to about 500 centipoise and a resistivity of from about 10.sup.8 to about 10.sup.11 ohm-cm, wherein at least about 80 percent by weight of the liquid component of the developer comprises the curable liquid, wherein the liquid vehicle is selected from the group consisting of (a) decyl vinyl ether;
A process for forming images which comprises generating an electrostatic latent image, contacting the latent image with a liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm, wherein at least about 80 percent by weight of the liquid component of the developer comprises the curable liquid, and curing the liquid vehicle remaining on the developed image subsequent to development, wherein the liquid vehicle is selected from the group consisting of (a) decyl vinyl ether;
A liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm, wherein at least about 80 percent by weight of the liquid component of the developer comprises the curable liquid, said curable liquid being selected from the group consisting of monoacrylates, monomethacrylates, and mixtures thereof.
A liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of from about 25 to about 500 centipoise and a resistivity of from about 10.sup.8 to about 10.sup.11 ohm-cm, wherein at least about 80 percent by weight of the liquid component of the developer comprises the curable liquid, said curable liquid being selected from the group consisting of monoacrylates, monomethacrylates, and mixtures thereof.
A process for forming images which comprises generating an electrostatic latent image, contacting the latent image with a liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm, wherein at least about 80 percent by weight of the liquid component of the developer comprises the curable liquid, said curable liquid being selected from the group consisting of monoacrylates, monomethacrylates, and mixtures thereof, and curing the liquid vehicle remaining on the developed image subsequent to development.
Dependencies are inferred from the claim text.