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    Liquid crystal composition and heat-sensitive recording medium using this material
    1.
    发明授权
    Liquid crystal composition and heat-sensitive recording medium using this material 失效
    液晶组合物和使用这种材料的热敏记录介质

    公开(公告)号：US06464897B1

    公开(公告)日：2002-10-15

    申请号：US09590599

    申请日：2000-06-09

    申请人： Noaya Suzuki ,  Shoji Kotani ,  Hideaki Ueda

    发明人： Noaya Suzuki ,  Shoji Kotani ,  Hideaki Ueda

    IPC分类号： C09K1936

    CPC分类号： B41M5/363 ,  B41M5/42 ,  C09K19/36 ,  G02F1/13718

    摘要： Cholesteric liquid crystal compositions and a recording medium which includes cholesteric liquid crystal composition are disclosed. The cholesteric liquid crystal composition has a characteristic, in a cholesteric phase, of reflecting visible light in accordance with temperature. By rapidly cooling the display from a cholesteric phase, the material can be solidified in a reflection state. The cholesteric material also has the characteristic during a transition from a solid phase to a cholesteric phase of having of an enthalpy &Dgr;Hch at a substantially constant value during a time when a temperature thereof increases during one of differential thermal analysis and differential scanning calorimetry.

    摘要翻译： 公开了胆甾型液晶组合物和包括胆甾型液晶组合物的记录介质。 胆甾型液晶组合物在胆甾醇相中具有根据温度反射可见光的特性。 通过从胆甾醇相快速冷却显示器，材料可以在反射状态下固化。 胆固醇材料在从差固热分析和差示扫描量热法之一的温度升高的时间期间，在从固相到胆甾醇相转变期间具有基本恒定的焓DELTAHch的特性。

    Recording method and recording apparatus for thermoreversible recording medium
    2.
    发明授权
    Recording method and recording apparatus for thermoreversible recording medium 失效
    用于热可逆记录介质的记录方法和记录装置

    公开(公告)号：US06829020B2

    公开(公告)日：2004-12-07

    申请号：US09818969

    申请日：2001-03-27

    申请人： Shoji Kotani ,  Hideaki Ueda

    发明人： Shoji Kotani ,  Hideaki Ueda

    IPC分类号： G02F1133

    CPC分类号： B41J2/471 ,  B41J2/005 ,  B41M5/36 ,  G02F1/132 ,  G02F1/13718

    摘要： Disclosed herein is a recording method for recording an image on a thermosensible image bearing medium that contains liquid crystal material. The liquid crystal exhibits a cholesteric phase at a temperature range higher than a room temperature so as to reflect selected wavelength of light based on heated temperature within the temperature range. Since the cholesteric liquid crystal material has a different response time for each selective reflection wavelength, an optimum energy application time is required for obtaining a desired recording color. Accordingly, in the recording method, it is getting higher the heating temperature, shorter the application time. The application time can be adjusted by the pulse width and/or pulse number of the applied energy.

    摘要翻译： 本文公开了一种用于在包含液晶材料的热敏图像承载介质上记录图像的记录方法。 该液晶在高于室温的温度范围内显示出胆甾醇相，以便基于加热温度在所述温度范围内反射所选择的光波长。 由于胆甾型液晶材料对于每个选择反射波长具有不同的响应时间，所以为获得所需的记录颜色需要最佳的能量施加时间。 因此，在记录方法中，加热温度越高，涂布时间越短。 施加时间可以通过所施加的能量的脉冲宽度和/或脉冲数来调节。

    Information recording/displaying card
    4.
    发明授权
    Information recording/displaying card 失效
    信息记录/显示卡

    公开(公告)号：US06580481B2

    公开(公告)日：2003-06-17

    申请号：US09346868

    申请日：1999-07-02

    申请人： Hideaki Ueda ,  Tsuyoshi Nozaki ,  Shoji Kotani

    发明人： Hideaki Ueda ,  Tsuyoshi Nozaki ,  Shoji Kotani

    IPC分类号： G02F11335

    CPC分类号： G02F1/132 ,  G02F1/133362 ,  G02F1/13718 ,  G07F7/086

    摘要： The invention provides an information recording/displaying card and an information recording/displaying system using the card in which invisible information can be recorded, the invisible information can be displayed as visible information and visible information can be written/erased as color images at a practical speed. The information recording/displaying card includes a visible information display part and an invisible information recording part. These parts are disposed, for example, on the front and back surfaces of the card, respectively, or arranged side by side on the front or back surface thereof. The visible information display part includes, as a main component, a low molecular weight cholesteric liquid crystal compound having an isotropic phase transition temperature higher than a melting point, so that information can be displayed, written once and erased therein. The invisible information recording part is, for example, a magnetic recording layer, a write-once optical recording layer or an integrated circuit memory, in which information can be recorded and erased.

    摘要翻译： 本发明提供一种信息记录/显示卡和使用其中可以记录不可见信息的卡的信息记录/显示系统，不可见信息可以被显示为可见信息，并且可视信息可以作为彩色图像被实际写入/擦除 速度。 信息记录/显示卡包括可见信息显示部分和不可见信息记录部分。 这些部件例如分别设置在卡的前表面和后表面上，或者在其前表面或后表面上并排配置。 可见信息显示部分包括具有高于熔点的各向同性相转变温度的低分子胆固醇液晶化合物作为主要成分，从而可以显示一次并擦除信息。 不可见信息记录部分例如是可记录和擦除信息的磁记录层，一次写入光记录层或集成电路存储器。

    Recording method and recording device using a heat reversible recording medium
    5.
    发明授权
    Recording method and recording device using a heat reversible recording medium 失效
    使用热可逆记录介质的记录方法和记录装置

    公开(公告)号：US06552756B1

    公开(公告)日：2003-04-22

    申请号：US09564107

    申请日：2000-05-03

    申请人： Shoji Kotani ,  Naoya Suzuki ,  Hideaki Ueda ,  Eiji Yamakawa

    发明人： Shoji Kotani ,  Naoya Suzuki ,  Hideaki Ueda ,  Eiji Yamakawa

    IPC分类号： G02F11336

    CPC分类号： G02F1/13718

    摘要： A heat reversible recording medium is disclosed which includes a cholesteric liquid crystal compound. By selective application of differing temperature profiles, regions of the recording medium can be fixed in states which selectively reflect light in different wavelengths thus providing the ability to fix color images in the medium. The disclosure also includes a method of recording a color image using a medium which includes a cholesteric liquid crystal compound, an apparatus for fixing an image in the recording medium as well as several cholesteric liquid crystal compounds which are suitable for use in the method and apparatus.

    摘要翻译： 公开了一种包括胆甾型液晶化合物的热可逆记录介质。 通过选择性地应用不同的温度分布，可以以选择性地反射不同波长的光的状态固定记录介质的区域，从而提供在介质中固定彩色图像的能力。 本公开还包括使用包括胆甾型液晶化合物的介质，用于将记录介质中的图像定影的装置以及适用于该方法和装置的若干胆甾型液晶化合物的记录彩色图像的方法 。