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    • 26. 发明授权
    • Reversible thermosensitive recording medium, and image forming and erasing method
    • 可逆热敏记录介质,以及成像和擦除方法
    • US06177383B1
    • 2001-01-23
    • US09274799
    • 1999-03-23
    • Tetsuya AmanoKazumi SuzukiAtsushi KutamiYoshihiko HottaTsuyoshi WatanabeRyouji FurutaTakashi Ukachi
    • Tetsuya AmanoKazumi SuzukiAtsushi KutamiYoshihiko HottaTsuyoshi WatanabeRyouji FurutaTakashi Ukachi
    • B41M540
    • B41M5/42B41M5/363B41M5/41
    • A reversible thermosensitive recording medium is provided, comprising a supporting substrate, a reversible thermosensitive recording layer and an overcoat layer, formed in the order recited, in which the recording layer changes transparency or color tone reversibly with temperature. The overcoat layer is formed to have a peak temperature of at most 155° C. in a tan &dgr; vs. temperature curve, wherein tan &dgr; is defined by G′/G″, with dynamic modulus of elasticity represented by G′ and dynamic elastic loss represented by G″. This thermosensitive recording medium is capable of satisfactorily carrying out the formation and erasure of images with a heating device, such as a thermal printhead, and overcoming difficulties such as the occurrence of cracks and portions of the overcoat layer being removed therefrom and then sticking to heating elements of the thermal printhead, which are caused especially by the application of heating pulses for shorter periods of time and/or at increased pressures during repeated image formation and erasure processing.
    • 提供了一种可逆热敏记录介质,其包括支撑衬底,可逆热敏记录层和外涂层,其按照所述顺序形成,其中记录层随着温度可逆地改变透明度或色调。 形成外涂层在tanδ对温度曲线中具有至多155℃的峰值温度,其中tanδ由G'/ G“定义,具有由G'表示的动态弹性模量和动态 由G“表示的弹性损失。 这种热敏记录介质能够令人满意地执行图像的形成和擦除,其中加热装置例如热打印头,并且克服诸如发生裂纹和外涂层的部分被从其中除去的困难,然后粘附到加热 特别是通过在重复图像形成和擦除处理期间施加加热脉冲较短时间和/或在增加的压力下引起热敏打印头的元件。
    • 28. 发明授权
    • Reversible thermosensitive recording medium
    • 可逆热敏记录介质
    • US5426086A
    • 1995-06-20
    • US300033
    • 1994-09-02
    • Yoshihiko HottaMakoto KawaguchiTetsuya Amano
    • Yoshihiko HottaMakoto KawaguchiTetsuya Amano
    • B41M5/36B41M5/26
    • B41M5/363
    • A reversible thermosensitive recording medium includes a reversible thermosensitive recording layer which is composed of a matrix resin and an organic low-molecular material which is dispersed in the matrix resin, the transparency of the reversible thermosensitive recording layer being reversibly changeable depending upon the temperature of the reversible thermosensitive recording layer, wherein the reversible thermosensitive recording layer has a softening initiation temperature T.sub.A, the organic low-molecular-weight material has a higher crystallization temperature T.sub.B1 which is 80.degree. C. or more and a lower crystallization temperature T.sub.B2, the softening initiation temperature T.sub.A is between the higher crystallization temperature T.sub.B1 and the lower crystallization temperature T.sub.B2, and the higher crystallization temperature T.sub.B1 and the lower crystallization temperature T.sub.B2 satisfies the relationship of T.sub.B1 -T.sub.B2 .gtoreq.40.degree. C.
    • 可逆热敏记录介质包括由矩阵树脂和分散在基质树脂中的有机低分子材料组成的可逆热敏记录层,可逆热敏记录层的透明度可根据 可逆热敏记录层,其中可逆热敏记录层具有软化初始温度TA,有机低分子量材料具有较高的结晶温度TB1,其结晶温度为80℃或更高,结晶温度TB2较低,软化引发 温度TA在较高的结晶温度TB1和较低的结晶温度TB2之间,较高的结晶温度TB1和较低的结晶温度TB2满足TB1-TB2> / = 40℃的关系。