| 摘要 |
PURPOSE:To overcome the problem of poor storage stability. i.e., the defect often found in the subject ink contg. xanthane gum, and thus prepare the ink which can maintain long-stable writing characteristics. CONSTITUTION:This water-base ink contains a colorant, a water-sol. org. solvent, water, 0.2wt.% or lower (based on the ink) xanthane gum, and 1-0.5wt.% (based on the ink) nonionic polysaccharide such as guar gum. |
