| 摘要 |
PURPOSE: To obtain the subject ink, containing a direct dye and a polymer containing a specific recurring unit without scorching and sticking to a printer head and capable of realizing prints having high water resistance and line marker properties. CONSTITUTION: This ink contains (A) a direct dye and (B) a polymer comprising a recurring unit of the formula [X is a (substituted)alkyl, a (substituted)alkoxy, a (substituted)aryl(oxy), carboxyl, an acyl, hydroxyl, amino nitro, sulfonyl, sulfinyl or a halogen; (m) is 0-5] [e.g. an alternating (styrene-maleic acid) copolymer]. The polymer is preferably capable of initiating thermal decomposing reaction at 150-500 deg.C and has preferably 1000-10000 molecular weight in the component (B). For example, the amounts of the components based on the total weight of the ink are preferably 0.7-7wt.% component (A), 0.5-10wt.% component (B), 70-90wt.% water and 0.1-15wt.% other components, and the weight ratio of the components (A) to (B) is 0.5-5. |
