PROBLEM TO BE SOLVED: To provide a production method of a solid preparation printed object capable of easily improving durability of a printed image formed by an ink jet method on a surface of a solid preparation, even when a dye-based coloring agent is used as a coloring material of a water soluble ink for ink jet printing, and a solid preparation printed object formed by the above mentioned production method.SOLUTION: A water soluble ink including a water soluble solvent having high boiling point is used for printing an image on a surface of a solid preparation by an ink jet printing method, and then performing heating storage processing after printing. According to the production method of the solid preparation printed object, since the printed image does not dry completely immediately after printing, and the heating storage processing is performed in a state in which ink flow ability is improved, so that, an effect in which an ink adhered to the surface of the solid preparation permeates the solid preparation during heating storage processing, can be acquired, and the ink is not directly affected by light or humidity from the exterior, thereby improving durability of the printed image.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】インクジェット印刷用水溶性インクの色材として染料系の色素を使用した場合であっても、固形製剤の表面にインクジェット法により形成された印刷画像の耐久性を簡便に向上させることのできる固形製剤被印刷物の製造方法、および当該製造方法により生成される固形製剤被印刷物を提供する。【解決手段】高沸点の水溶性溶媒を含んだ水溶性インクを使用して、固形製剤の表面に、インクジェット印刷法により画像を印刷し、該印刷後に加熱保存処理を行なう。前述の固形製剤被印刷物の製造方法によれば、印刷直後に印刷画像が完全に乾燥することなく、インク流動性が向上した状態で加熱保存処理が行なわれるため、固形製剤の表面に付着したインクが、加熱保存処理中に固形製剤の内部に浸透する効果が得られ、直接的に外部からの光や湿度の影響を受けにくくなることで印刷画像の耐久性を向上させることができる。【選択図】図3
