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    • 5. 发明授权
    • Thermal recording material
    • 热敏记录材料
    • US5494882A
    • 1996-02-27
    • US233759
    • 1994-04-26
    • Toshimi SatakeHideki HayasakaToshiyuki TakanoTomoaki NagaiAkio Sekine
    • Toshimi SatakeHideki HayasakaToshiyuki TakanoTomoaki NagaiAkio Sekine
    • B41M5/333B41M5/30
    • B41M5/3333
    • It is provided with a thermal recording material having a support coated with a coating solution as a color developing layer. The color developing layer has a colorless dye precursor which is normally colorless or light-colored, and a developer which reacts with the dye precursor to cause color development thereof upon heating. The developer is a bisthiourea compound represented by, for example, a formula (A-2): ##STR1## and the thermal color developing layer contains no sensitizer. In the thermal recording materials of the present invention, substantially no color is developed at a temperature of 120.degree. C. while color development can be caused in response to heating with a thermal head or a laser beam. The developed color on the material can be erased upon contacting with alcoholic solvents, depending on the thiourea compound contained in the color developing layer. After erasure of the image, the material can be used again for recording with a thermal head or a laser beam.
    • 其具有热敏记录材料,其具有涂覆有作为彩色显影层的涂布溶液的载体。 彩色显影层具有通常无色或浅色的无色染料前体,以及与染料前体反应以在加热时使其显色的显影剂。 显色剂是例​​如由式(A-2)表示的二硫脲化合物:(IMA)(A-2),热显色层不含敏化剂。 在本发明的热敏记录材料中,在120℃的温度下基本上没有显色,同时可以利用热敏头或激光束加热而引起显色。 取决于包含在彩色显影层中的硫脲化合物,材料上显影的颜色可以在与醇溶剂接触时被擦除。 在擦除图像之后,可以再次使用材料用热敏头或激光束进行记录。