| 摘要 |
PURPOSE:To obtain good reproducibility of a relief pattern and to dry a printing plate in a short time by cleaning a photosensitive resin layer with a specified cleaning solution after developing and before drying. CONSTITUTION:A flexographic resin plate is produced by image-exposing a photosensitive resin layer of the photosensitive resin plate, developing and drying. In this process, the photosensitive resin layer is cleaned with cleaning soln. after the resin layer is developed and before dried. This cleaning soln. is at least one kind of alcohol selected from alcohols having boiling temp. of 30-100 deg.C and 1 to 5C, and is preferably isopropyl alcohol. The resin plate is dried by heating. The photosensitive resin layer consists of a thermoplastic elastomer, photopolymerizable monomers and photopolymn. initiator. The developer is an emulsion comprising water, surfactant and at least one kind of solvent selected from aromatic solvents or paraffin or naphthene solvents. By this method, the time for drying can be decreased so that swelling due to the developer is prevented and a relief with good reproducibility can be obtd. The obtd. flexographic printing resin plate has no distortion in the frame and shows good printing property. |
