| 摘要 |
PURPOSE:To improve the aging stability and light fastness by holding a diazo compound, a blue coupling component and a specified compound on a support. CONSTITUTION:A diazo compound, a blue coupling component and at least one kind of compound represented by formula I (where R is 4-20C alkyl) are held on a support. The compound represented by the formula I may be n-butyl-1- hydroxy-2-naphthylamide or tert-butyl-1-hydroxy-2-naphthylamide. A naphthol AS deriv. is preferably used as the blue coupling component. The diazo compound used is required only to develop a blue color by combination with the blue coupling component and it may be 4-dimethylaminobenzenediazonium or 4-diethylaminobenzenediazonium. |
