| 摘要 |
A printed matter is printed by a ink containing a color coupler that is chromatized from a substantially invisible colorless state to a colored state by means of a color coupling additive applied by an applicator. The color coupler is at least one electron donative coloring compound selected from a group A composed of crystal violet lactone; malachite green lactone; 1.3-dimethyl-6-diethylaminofluoran; 6-diethylamino-benzo[ alpha ]-fluoran; 3-cyclohexyl methylamino-6-methyl-7-anilinofluoran; benzoyl leucomethylene blue; ethyl leucomethylene blue; methoxybenzoyl leucomethylene blue; 2-(phenylimino ethanedilidene)-3.3-trimethyl-indoline; 1.3.3-trimethyl-indolino-7'-chloro- beta -naphthospiropyran; di- beta -naphthospiropyran; N-acetylauramine; N-phenylauramine; and rhodamine B lactam. The color coupling additive is at least one electron acceptive developing compound selected from a group B composed of zinc salicylate, bisphenol A and inorganic and organic acids.
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