| 摘要 |
PURPOSE:To obtain a treating method that causes small change in developing property and small precipitation in the developing liquid during the continuous treatment and can prevent deposition of contamination on the printing plate by removing a protective layer on a silicone rubber layer by dissolving or swelling with using a water-base treating liquid and then removing the silicone rubber layer in a image area with using an alkaline developer containing a specified amt. of water. CONSTITUTION:The device used consists of a zone (A) to remove a protective layer, developing zone (B), water washing zone (C) and dyeing zone (D). The developer to remove the silicone rubber layer is an alkaline soln. containing >=70wt.% water. As the protective layer, a polymer material is used pryerably, for example, polyvinyl alcohol, polyamide, etc. |
