| 摘要 |
PURPOSE: To provide a treating liquid which improves the ink receptivity and is used for an offset printing plate having no contamination in a non-picture part and rendering a silver image as having ink receptivity. CONSTITUTION: The treating liquid contains a compd. expressed by formula and is used for and offset printing plate in which a silver image is used as having ink accepting property. In formula, 1 is an integer >4, L is a bivalent connecting group comprising straight-chain carbon atoms, M is a hydrogen atom, alkali metal ion such as sodium and potassium, or ammonium ion. |
