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    • 63. 发明授权
    • Solvent-less process for producing transient documents
    • 用于生产瞬态文件的无溶剂过程
    • US07709164B2
    • 2010-05-04
    • US11930732
    • 2007-10-31
    • Gabriel IftimePeter M KazmaierNaveen ChopraSan-Ming YangRaymond W Wong
    • Gabriel IftimePeter M KazmaierNaveen ChopraSan-Ming YangRaymond W Wong
    • G03F7/00G03F7/004
    • G03C1/73B41M5/284B41M7/0009C09K9/02C09K2211/1029C09K2211/1033C09K2211/1048C09K2211/1088C09K2211/1092G03C1/685Y10S430/163
    • An image forming method including (a) providing a reimageable medium comprised of a substrate and a photochromic material, wherein the medium is capable of exhibiting a color contrast and an absence of the color contrast; (b) 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; (c) 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 (d) optionally repeating procedures (b) and (c) a number of times to result in the medium undergoing a number of additional cycles of temporary image formation and temporary image erasure, wherein the reimageable medium is prepared by a solvent-less process comprising i) heating and melting a photochromic material and a polymer to form a coating composition, and ii) coating the coating composition onto at least one side of a transient document substrate.
    • 一种图像形成方法,包括(a)提供由基底和光致变色材料组成的可再成像介质,其中所述介质能够呈现颜色对比度和不存在颜色对比度; (b)将介质暴露于与预定图像相对应的成像光,以产生曝光区域和非曝光区域,其中在曝光区域和非曝光区域之间存在着色对比度,以允许临时图像对应 到预定图像以在可见时间内可见; (c)使临时图像在室内环境条件下进行图像擦除时间以将颜色对比度改变为不存在颜色对比度以擦除临时图像而不使用图像擦除装置; 和(d)任选地重复步骤(b)和(c)多次以导致介质经历多个附加循环的临时图像形成和临时图像擦除,其中可再成像介质通过无溶剂方法制备 包括:i)加热和熔融光致变色材料和聚合物以形成涂料组合物,和ii)将涂料组合物涂布在瞬时文件底物的至少一侧上。
    • 67. 发明授权
    • Multicolor electronic paper
    • 多色电子纸
    • US07521159B2
    • 2009-04-21
    • US11093993
    • 2005-03-30
    • Gabriel IftimePeter M. Kazmaier
    • Gabriel IftimePeter M. Kazmaier
    • G02F1/13
    • G02F1/0126G02F1/13G02F1/17G02F2201/14G02F2203/34Y10S430/163
    • A reimagable medium and a method for “writing” to a reimagable medium are disclosed. The reimagable medium includes a liquid crystal layer, one or more photochromic layers and an electric field generating apparatus. The electric field generating apparatus supplies voltage levels across the liquid crystal layer causing the liquid crystal layer to transfer between a white and a transparent state. The photochromic layers transfer to a colored state when illuminated by ultraviolet light and to a transparent state when illuminated by visible light. Each of the layers maintains their present states when voltage or illumination below corresponding thresholds is supplied. The reimagable medium is flexible and may maintain an image “written” to it until the paper is rewritten. The paper may be attached to a colored substrate if an additional color is to be displayed.
    • 公开了一种用于“写入”到可重复介质的可重​​复介质和方法。 可重复介质包括液晶层,一个或多个光致变色层和电场产生装置。 电场产生装置提供跨越液晶层的电压电平,使液晶层在白色和透明状态之间传输。 当被紫外线照射时,光致变色层转移到有色状态,当被可见光照亮时,其变成透明状态。 当提供低于相应阈值的电压或照明时,每个层保持其当前状态。 可重复使用的介质是灵活的,并且可以保持图像“写入”直到纸被重写。 如果要显示额外的颜色,纸张可以附着到有色基底上。