| 摘要 |
PURPOSE:To prevent the decrease of the sensitive property of a picture part by intensifying desensitizing activity to a non-picture part, by containing specific aliphatic hydrocarbon, surfactant, and hydrophilic high-molecular compound. CONSTITUTION:For the aliphatic hydrocarbon containing 6-20 in number of carbon, either straight chain or branching may be preferable and one or two hydroxyl groups may be connected to any position. However, preferable aliphatic hydrocarbon has the solubility of 10% max. in water at 20 deg.C and its content in printing area protective agent is 0.01-20wt% to total weight. Especially preferable range is 0.05-15wt%. Further surfactant is used in a range of approx. 0.5 - approx. 10wt%, more preferably 1-5wt% to total in the weight of printing area protective agent. Furthermore, water soluble high molecular compound is used in a range of approx. 5 - approx. 40wt%, more preferably 10-30wt% to total in the weight of printing area protective agent. Its density in water phase is approx. 6 - approx. 60wt%, preferably 15-50wt% to be used. |
