| 摘要 |
PURPOSE:To enable formation of a clear color tone image free of color mixing or bleeding by blending a specified decoloring agent. CONSTITUTION:At least one compound of formula I is incorporated in the title recording material at a position at which the compound can display a decoloring action to a color forming system comprising a leuco dye and a color reaction agent. In formula I, each of R1 to R3 is a 1-18C alkyl, 5-8C cycloalkyl, 7-9C aralkyl or 6-12C aryl, and R1 may further be a group of formula II (wherein each of R4 and R5 is hydrogen, a 1-18C alkyl, 5-8C cycloalkyl or 6-10C aryl which may have a halosubstd. or unsubstd. 1-5C alkyl). At least one of R1 to R5 is a cycloalkyl, aryl or aralkyl. |
