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    Urea (thiourea) derivative and thermal recording sheet using the same
    19.
    发明授权
    Urea (thiourea) derivative and thermal recording sheet using the same 失效
    尿素（硫脲）衍生物和热敏记录片材使用

    公开(公告)号：US5661100A

    公开(公告)日：1997-08-26

    申请号：US521031

    申请日：1995-08-29

    申请人： Toshiaki Minami ,  Tomoaki Nagai ,  Kaoru Hamada ,  Akio Sekine ,  Ryoichi Kinishi ,  Ryuzo Minakami

    发明人： Toshiaki Minami ,  Tomoaki Nagai ,  Kaoru Hamada ,  Akio Sekine ,  Ryoichi Kinishi ,  Ryuzo Minakami

    IPC分类号： B41M5/337 ,  B41M5/333 ,  C07C311/51 ,  C07C335/16 ,  C07C335/22 ,  B41M5/30

    CPC分类号： B41M5/3336 ,  B41M5/3333 ,  C07C311/51 ,  C07C335/16 ,  C07C335/22

    摘要： A thermal recording sheet wherein a compound of Formula (I) or (II) is contained in a thermal color developing layer including a basic colorless dye and an organic color developer as main ingredients: ##STR1## (wherein A denotes hydrogen atom, an alkyl group of C.sub.1 to C.sub.4, an alkoxy group of C.sub.1 to C.sub.4, hydroxy group, or nitro group. R.sub.1, R.sub.2, and R.sub.3 are hydrogen atom, an alkyl group of C.sub.1 to C.sub.4, an alkoxy group of C.sub.1 to C.sub.4, hydroxy group, or nitro group. R.sub.1 and R.sub.2 may combine with each other to form an aromatic ring. Y is sulfur or oxygen atom.), ##STR2## (wherein B denotes hydrogen atom, an alkyl group of C.sub.1 to C.sub.4, an alkoxy group of C.sub.1 to C.sub.4, hydroxy group, or nitro group. R.sub.1, R.sub.2, and R.sub.3 are hydrogen atom, an alkyl group of C.sub.1 to C.sub.4, an alkoxy group of C.sub.1 to C.sub.4, hydroxy group, or nitro group. R.sub.1 and R.sub.2 may combine with each other to form an aromatic ring. Y is sulfur or oxygen atom.).The thermal recording sheet has a high sensitivity and high image stability.

    摘要翻译： 一种热记录片，其中式（I）或（II）的化合物包含在包含碱性无色染料和有机显色剂作为主要成分的热显色层中：C1至C4的烷基，烷氧基 的C1至C4，羟基或硝基。 R1，R2和R3是氢原子，C1〜C4的烷基，C1〜C4的烷氧基，羟基或硝基。 R1和R2可以相互结合形成芳香环。 （II）（其中B表示氢原子，C1至C4的烷基，C1至C4的烷氧基，羟基或硝基），R1，R2和 R3为氢原子，C1〜C4烷基，C1〜C4烷氧基，羟基或硝基，R1和R2可以相互结合形成芳香环，Y为硫原子或氧原子） 。 热敏记录纸具有高灵敏度和高图像稳定性。