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1. (WO2018003458) TABLET PRINTING APPARATUS AND TABLET PRINTING METHOD

Pub. No.:    WO/2018/003458    International Application No.:    PCT/JP2017/021411
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Sat Jun 10 01:59:59 CEST 2017
IPC: A61J 3/06
B41J 2/01
Applicants: SCREEN HOLDINGS CO., LTD.
株式会社SCREENホールディングス
Inventors: GAMA Takashi
蒲 隆
Title: TABLET PRINTING APPARATUS AND TABLET PRINTING METHOD
Abstract:
This tablet printing apparatus (1) comprises a conveying mechanism for conveying tablets (9) while sucking and holding the tablets (9) by applying a negative pressure to a plurality of suction parts, a head (42) for ejecting ink droplets onto the surface of the tablets (9), a camera (55) disposed on the downstream side of the head (42), a defective item determination unit for determining target tablets to be collected on the basis of images captured by the camera (55), first blow mechanisms (611, 621) for applying a positive pressure to the suction parts where the target tablets are held so as to release suction of the tablets (9), a discharge sensor (63) for detecting whether or not the tablets (9) are present in the suction parts, a remaining determination unit for determining remaining tablets on the basis of a detection signal from the discharge sensor (63), and a second blow mechanism (641) that releases suction of the remaining tablets. Through said features, even in cases where defective items are not collected by the first blow mechanisms (611, 621), it is possible to improve the collection efficiency of defective items. Accordingly, the collection efficiency of defective items in the tablet printing apparatus can be improved.