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    Optical reading method
    70.
    发明授权
    Optical reading method 失效
    光学读取方法

    公开(公告)号：US5340606A

    公开(公告)日：1994-08-23

    申请号：US918607

    申请日：1992-07-27

    申请人： Shojiro Sano ,  Ken Iwakura

    发明人： Shojiro Sano ,  Ken Iwakura

    IPC分类号： B41M5/124 ,  B41M5/145 ,  B41M3/12

    CPC分类号： B41M5/124 ,  B41M5/145

    摘要： A method of optically reading colored record images formed by the reaction of a substantially colorless electron donating dye and an electron accepting developer in a pressure-sensitive recording sheet with a red light having a wavelength of from 620 nm to 700 nm, wherein the pressure-sensitive recording sheet comprises an electron accepting developer layer containing a metal salt of an aromatic carboxylic acid as the electron accepting developer and an electron donating dye layer containing a phthalide compound represented by the following formula (1) as the electron donating dye: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; the R.sub.1 and R.sub.2 or the R.sub.3 and R.sub.4 may combine with each other to form a ring; R.sub.5 represents a hydrogen atom or an alkyl group; R6, R.sub.7, R.sub.8, and R.sub.9 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a substituted amino group, or an alicyclic amino group; and X and Y each represents a hydrogen atom, an alkyl group, or an alkoxy group.

    摘要翻译： 通过使用具有620nm至700nm波长的红光的压敏记录片材中基本无色的给电子染料和受电子显影剂的反应形成的彩色记录图像的方法，其中， 感光记录片包括含有作为电子接受显影剂的芳族羧酸的金属盐的电子接受显影剂层和含有由下式（1）表示的作为供电子染料的苯酞化合物的给电子染料层： （1）其中R1，R2，R3和R4各自表示取代或未取代的烷基，取代或未取代的芳烷基或取代或未取代的芳基; R1和R2或R3和R4可以相互结合形成环; R5表示氢原子或烷基; R6，R7，R8和R9各自表示氢原子，卤素原子，烷基，烷氧基，取代氨基或脂环族氨基; X和Y各自表示氢原子，烷基或烷氧基。