| 摘要 |
An ink is provided which can realize good images on various recording media, especially plain papers.The ink comprises at least a water-soluble colorant, a water-soluble organic solvent, water, and a mixture of two or more compounds represented by formula (I):whereinEO represents an ethyleneoxy group;PO represents a propyleneoxy group;T represents an OH group or SO3M wherein M represents a hydrogen atom, an alkali metal, an inorganic base, or an organic amine;m and n are each an integer;k is a natural number of not less than 1; andR represents an alkyl or cyclic group.
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