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    • 5. 发明申请
    • Protective layer for reimageable medium
    • 可再形成介质的保护层
    • US20070003847A1
    • 2007-01-04
    • US11156437
    • 2005-06-20
    • Naveen ChopraGabriel IftimePeter Kazmaier
    • Naveen ChopraGabriel IftimePeter Kazmaier
    • G03C3/00
    • G03C1/73G03C1/002Y10S430/163
    • A reimageable recording medium includes a substrate, a display layer, and a protective layer. The protective layer comprises a microencapsulated diarylethene material that is capable of switching between a UV absorbing and UV transparent state. During an imaging process, the protective layer is switched from a UV absorbing state to a UV transparent state to allow UV light of a sufficient wavelength to convert a photochromic material of the display layer to a colored state to form an image. The protective material is then switched back to a UV absorbing state to prevent the UV light component from a reading source to convert unimaged areas of the display layer to change color, which would reduce the contrast and resolution of the imaged medium.
    • 可再成像的记录介质包括基板,显示层和保护层。 保护层包括能够在UV吸收和UV透明状态之间切换的微胶囊二芳基乙烯材料。 在成像过程中,保护层从UV吸收状态切换到UV透明状态,以允许足够波长的紫外光将显示层的光致变色材料转化为着色状态以形成图像。 然后将保护材料切换回UV吸收状态以防止来自读取源的UV光分量转换显示层的未成像区域以改变颜色,这将降低成像介质的对比度和分辨率。
    • 9. 发明申请
    • SOLVENT-LESS PROCESS FOR PRODUCING TRANSIENT DOCUMENTS
    • 用于生产瞬态文件的无溶剂流程
    • US20080044747A1
    • 2008-02-21
    • US11930732
    • 2007-10-31
    • GABRIEL IFTIMEPeter KazmaierNaveen ChopraSan-Ming YangRaymond Wong
    • GABRIEL IFTIMEPeter KazmaierNaveen ChopraSan-Ming YangRaymond Wong
    • G03C11/00
    • 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。