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1. (WO2017038212) TABLET PRINTING APPARATUS AND TABLET PRINTING METHOD

Pub. No.:    WO/2017/038212    International Application No.:    PCT/JP2016/068230
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Tue Jun 21 01:59:59 CEST 2016
IPC: B41J 2/01
A61J 3/06
Applicants: SCREEN HOLDINGS CO., LTD.
株式会社SCREENホールディングス
Inventors: MIYAKE Takashi
三宅 孝志
Title: TABLET PRINTING APPARATUS AND TABLET PRINTING METHOD
Abstract:
This tablet printing apparatus first irradiates ultraviolet rays or infrared rays onto the surface of a tablet (9) that is being conveyed. The ultraviolet rays or the infrared rays are irradiated onto at least an outline part of a target area (A) where a print image is to be formed. When ultraviolet rays are irradiated, the surface of the outline part is roughened to reduce an ink contact angle. When infrared rays are irradiated, the outline part is etched to form a recessed shape. Ink (I) is then ejected inside the outline part. Thus, the ejected ink (I) can be prevented from spreading outside the target area (A). As a result, the outline of the print image can be made clearly visible.