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    • 12. 发明授权
    • Liquid developer compositions containing polyolefin resins
    • 含有聚烯烃树脂的液体显影剂组合物
    • US5030535A
    • 1991-07-09
    • US300395
    • 1989-01-23
    • Stephan DrappelTimothy J. FullerMelvin D. CroucherJames D. MayoRaymond W. Wong
    • Stephan DrappelTimothy J. FullerMelvin D. CroucherJames D. MayoRaymond W. Wong
    • G03G9/13
    • G03G9/131
    • Disclosed is a liquid developer composition comprising a liquid vehicle, a charge control additive, and toner particles containing pigment particles and a resin selected from the group consisting of polyolefins, halogenated polyolefins, and mixtures thereof. Preferred resins include poly-.alpha.-olefins and chlorinated polypropylenes. The resin is soluble in the liquid vehicle at elevated temperatures and insoluble in the liquid vehicle at ambient temperatures. Also disclosed is a liquid developer composition comprising a liquid vehicle, pigment particles, a charge control additive, and a resin selected from the group consisting of polyolefins, halogenated polyolefins, and mixtures thereof, wherein the resin is soluble in the liquid vehicle at elevated temperatures and insoluble in the liquid vehicle at ambient temperatures, and wherein the liquid developer is prepared by dissolving the resin in the liquid vehicle at temperatures of from about 80.degree. C. to about 120.degree. C., subsequently adding the pigment particles to the resulting solution, attriting the resulting mixture for from about 20 minutes to about 75 minutes, cooling the mixture to ambient temperature over a period of from about 1 hour to about 3 hours with continuous mixing, and subsequently adding to the mixture the charge control additive.
    • 公开了包含液体载体,电荷控制添加剂和含有颜料颗粒的调色剂颗粒和选自聚烯烃,卤代聚烯烃及其混合物的树脂的液体显影剂组合物。 优选的树脂包括聚-α-烯烃和氯化聚丙烯。 树脂在高温下可溶于液体载体,在环境温度下不溶于液体载体。 还公开了一种液体显影剂组合物,其包含液体载体,颜料颗粒,电荷控制添加剂和选自聚烯烃,卤代聚烯烃及其混合物的树脂,其中树脂在高温下可溶于液体载体 并且在环境温度下不溶于液体载体,其中液体显影剂是通过在约80℃至约120℃的温度下将树脂溶解在液体载体中制备的,随后将颜料颗粒加入到所得溶液中 ,将所得混合物磨碎约20分钟至约75分钟,连续混合,在约1小时至约3小时的时间内将混合物冷却至环境温度,随后将混合物加入电荷控制添加剂。
    • 18. 发明申请
    • Solvent-less process for producing transient documents
    • 用于生产瞬态文件的无溶剂过程
    • US20050287475A1
    • 2005-12-29
    • US11215950
    • 2005-08-30
    • Gabriel IftimePeter KazmaierNaveen ChopraSan-Ming YangRaymond W. Wong
    • Gabriel IftimePeter KazmaierNaveen ChopraSan-Ming YangRaymond W. Wong
    • G03C1/685G03C1/73G03C5/56G03C1/492
    • G03C1/73G03C1/685Y10S430/136Y10S430/163
    • A solvent-less process for producing a transient document which is capable of self-erasing, wherein the solvent-less process includes a) heating and reacting a photochromic compound and a polymer to form a coating composition, and b) coating the coating composition onto an image-receiving side of a transient document substrate, and further an image forming method using the same solvent-less process and including (i) providing a reimageable medium of a substrate and a photochromic material, wherein the medium is capable of exhibiting a color contrast and an absence of the color contrast; (ii) exposing the medium to an imaging light corresponding to a predetermined image to result in an exposed region and a non-exposed region, wherein the color contrast is present between the exposed region and the non-exposed region to allow a temporary image corresponding to the predetermined image to be visible for a visible time; (iii) subjecting the temporary image to an indoor ambient condition for an image erasing time to change the color contrast to the absence of the color contrast to erase the temporary image without using an image erasure device; and (iv) optionally repeating procedures (ii) and (ii) a number of times to result in the medium undergoing a number of additional cycles of temporary image formation and temporary image erasure.
    • 一种用于生产能够自擦除的瞬态文件的无溶剂方法,其中无溶剂方法包括:a)将光致变色化合物和聚合物加热和反应以形成涂料组合物,和b)将涂料组合物涂布到 瞬时原稿基板的图像接收侧,以及使用相同无溶剂工艺的图像形成方法,并且包括(i)提供基板和光致变色材料的可再成像介质,其中该介质能够呈现颜色 对比度和缺乏色彩对比度; (ii)将介质暴露于与预定图像相对应的成像光,以产生曝光区域和未曝光区域,其中在曝光区域和非曝光区域之间存在颜色对比度,以允许临时图像对应 到预定图像以在可见时间内可见; (iii)使临时图像经历室内环境条件以获得图像擦除时间,以将颜色对比度改变为不存在色彩对比度以擦除临时图像而不使用图像擦除装置; 和(iv)可选地重复上述步骤(ii)和(ii)多次以导致介质经历多次临时图像形成和临时图像擦除的附加循环。