| 摘要 |
PURPOSE:To easily and rapidly cut an unexposed part by cutting away at least a part of the unexposed part by using a cutter heated to >=60 deg.C prior to removal of the unexposed part by dissolution. CONSTITUTION:A printing plate material constituted of a photosensitive resin layer and base is subjected to the exposing for image formation according to the conventional method. The exposed part of the photosensitive resin layer is insolubilized by this exposing and, therefore, the unexposed part is dissolved away by a suitable solvent. At least a part of the unexposed part is cut away prior to the stage for dissolving away the unexposed part by the solvent. The cutting is executed by using the cutter heated to >=60 deg.C. The cutting of the unexposed part to be executed prior to development is thereby easily executed. |
