| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for developing a sheet type photosensitive resin printing plate by which waste disposal cost is reduced and also a long-time drying stage after developing processing is eliminated by using water developer in which surfactant is not incorporated and circularly using the developer. SOLUTION: The sheet type photosensitive resin printing plate on which a specified image is formed by exposure is developed by jetting the gas-liquid two-phase water developer obtained by mixing water singly or compressed gas to the surface of the photosensitive resin printing plate with high pressure while temperature-controlling unexposed resin to be in a melted state, and hydrophobic photosensitive resin mixed in the used water developer is separated and removed by a technique such as filtration, and then the used water developer is circularly reused as the developer. |
