| 摘要 |
PURPOSE:To enable the enhancement of an ink deposition property and the suppression of printing contamination, by containing at least one fluorine- containing compound. CONSTITUTION:A treatment solution for planographic printing contains at least one kind of a fluorine-containing compound. This fluorine-containing compound is pref. a surfactant containing a hydrophobic group and the use quantity thereof is pref. 0.001-5wt%. As a hydrophilicity imparting agent, all of known compounds such as yellow prussiate of potash, phytate, hexamminecobalt salt and the like can be used. This treatment solution imparts not only a good ink deposition property but also good ink deposition property after drying and standing, and gives rapid ink spreadability and generates no background staining even if a large number of sheets are printed. |
