PROBLEM TO BE SOLVED: To achieve high adhesion and high chemical resistance required for a medical device and achieve improved workability and reduced production cost.SOLUTION: The present invention provides a printing method for printing an index 13 on a base resin 11, the method including a dissolution step S1 for dissolving a surface 12 of the base resin with organic solvent 22, a printing step S3 for printing an index layer 14 to be an index on the surface of the dissolved base resin with UV curing ink, and an ink curing step S4 for irradiating the printed index with ultraviolet rays.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】医療機器に必要な高密着・高耐薬性を実現し、作業性の向上と製造コストの削減とを実現する。【解決手段】基材樹脂11の上に指標13を印刷する印刷方法であり、基材樹脂の表面12を有機溶媒22で溶解する溶解工程S1と、溶解された基材樹脂の表面に、UV硬化インクによって指標となる指標層14を印刷する印刷工程S3と、印刷された指標に紫外線を照射するインク硬化工程S4と、を有する。【選択図】図4
