| 摘要 |
PURPOSE:To provide a recording object with excellent color erasing property that combines ink that contains specific two ingredients and a recording paper on which leuco compound, trioctylamine, etc. are applied and has perfect color erasing and no discoloration on the part where color was erased. CONSTITUTION:Ink is prepared by dissolving p-t-butyl-m-cresol,octylphenol, p- nonylphenol and/or benzylphenol (1) and trioctylaminne and/or tribenzylamine (2) into a solvent (preferably n-heptane) (A), and at the same time a leuco compound (3) (example, crystal violet lactone, etc.) and a mixture (4) of the ingredient (2) (B) with the solvent are applied on the paper or the paper is impregnated by them to produce recording paper. It is preferable to use 0.2-3 parts (weight) of the ingredient (1) to one part of the ingredient (3) and to use 0.01-15 parts of the ingredient (4) to one part of the ingredient (1). |
