申请人:NCR Corporation
公开号:US04016174A1
公开(公告)日:1977-04-05
A chromogenic compound of normally colorless form is disclosed having the following structural formula: ##STR1## wherein A can be aminophenyl, indolyl, and benzoindolyl, substituted or not; B can be benzoindolyl, substituted or not; and E can be a broad family of aromatic and heterocyclic structures. The compound is eligible for use in pressure-sensitive record materials and manifold marking systems. Because of light absorption characteristics, selected compounds of this invention are especially useful where broad spectrum absorption and machine readability are important.
本文披露了一种通常为无色形式的变色化合物,其结构式如下:##STR1## 其中,A可以是氨基苯基,吲哚基和苯并吲哚基,可以被替代或未被替代;B可以是苯并吲哚基,可以被替代或未被替代;E可以是广泛的芳香族和杂环结构。该化合物可用于压敏记录材料和多联标记系统。由于其光吸收特性,本发明的选定化合物在广谱吸收和机器可读性重要的情况下特别有用。