申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP0567314A1
公开(公告)日:1993-10-27
An electron-accepting compound is represented by the formula :
wherein X represents a hydrogen or halogen atom, a hydroxyl, carboxyl, alkoxycarbonyl, alkyl, alkoxy, allyl, aryl, aralkyl or cycloalkyl group ; Ar represents an arylene group containing 2 to 5 benzene rings, or having said rings condensed thereto or a bisarylene group in which arylene groups are connected to each other via a divalent group ; and R represents a hydrogen atom or an alkyl, aralkyl or aryloxyalkyl. Preferably R is H ; and Ar is -C6H4-0-C6H4-.
A novel recording material, heat- or pressure-sensitive, contains one of these compounds and at least one electron-providing colorless dye precursor, e.g. a fluoran, dispersed in a binder on a support. Color images are obtained without background fog or discoloration.
一种电子接受化合物的化学式为 :
其中,X 代表氢原子或卤素原子、羟基、羧基、烷氧基羰基、烷基、烷氧基、烯丙基、芳基、芳烷基或环烷基;Ar 代表含有 2 至 5 个苯环的芳烯基,或具有上述缩合环的芳烯基,或芳烯基通过二价基团相互连接的双芳基;R 代表氢原子或烷基、芳烷基或芳氧基烷基。R 最好是 H;Ar 是 -C6H4-0-C6H4-。
一种新型热敏或压敏记录材料含有上述化合物之一和至少一种提供电子的无色染料前体,例如氟烷,分散在支撑物上的粘合剂中。获得彩色图像时不会产生背景雾或变色。