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    • 4. 发明授权
    • Curable liquid developers
    • US5395724A
    • 1995-03-07
    • US13132
    • 1993-02-03
    • Ian D. MorrisonBing R. HsiehJerry H. Taylor
    • Ian D. MorrisonBing R. HsiehJerry H. Taylor
    • G03G9/12G03G9/00
    • G03G9/00G03G9/12
    • 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.
    • 5. 发明授权
    • Liquid developers having curable liquid vehicles
    • US5364726A
    • 1994-11-15
    • US17055
    • 1993-02-02
    • Ian D. MorrisonBing R. HsiehJerry H. Taylor
    • Ian D. MorrisonBing R. HsiehJerry H. Taylor
    • G03G9/12G03G9/125G03G9/13G03G17/04
    • G03G17/04G03G9/12G03G9/125G03G9/131
    • 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.sub.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.
    • 9. 发明授权
    • Development processes
    • 开发流程
    • US06261732B1
    • 2001-07-17
    • US09420325
    • 1999-10-18
    • Ian D. MorrisonJohn F. OliverJames R. LarsonEdward AnczurowskiAnthony M. Wallace
    • Ian D. MorrisonJohn F. OliverJames R. LarsonEdward AnczurowskiAnthony M. Wallace
    • G03G1510
    • G03G9/0823G03G9/0821G03G9/125G03G13/06
    • Disclosed is a process for forming images which comprises (a) generating an electrostatic latent image; (b) contacting the latent image with a developer comprising a colorant and a substantial amount of a vehicle with a melting point of at least about 25° C., said developer having a melting point of at least about 25° C., said contact occurring while the developer is maintained at a temperature at or above its melting point, said developer having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 108 ohm-cm at the temperature maintained while the developer is in contact with the latent image; and (c) cooling the developed image to a temperature below its melting point subsequent to development. Specific processes disclosed include electrophoretic development processes, polarizable liquid development processes, and photoelectrophoretic development processes. Optionally, the developed image is transferred to a substrate subsequent to development.
    • 公开了一种用于形成图像的方法,其包括(a)产生静电潜像; (b)使潜像与包含着色剂和大体积的至少约25℃熔点的载体的显影剂接触,所述显影剂具有至少约25℃的熔点,所述接触 当显影剂保持在等于或高于其熔点的温度时,所述显影剂在显影剂接触时保持的温度下具有不超过约500厘泊的粘度和不小于约108欧姆 - 厘米的电阻率 与潜像; 和(c)在显影后将显影图像冷却至低于其熔点的温度。 所公开的具体方法包括电泳显影方法,可极化液体显影方法和光电泳显影方法。 任选地,显影的图像在显影之后转移到基底。