PROBLEM TO BE SOLVED: To provide a printing machine capable of accurately printing a character or a mark on a solid preparation with a simple configuration.SOLUTION: A solid preparation printing machine 100 is provided for printing a character or a mark on a solid preparation T having a cleavage in at least either of a first main surface or a second main surface. The solid preparation printing machine 100 includes: a side imaging unit 61 for imaging a side image of the solid preparation T from a lateral direction to connect the first main surface with the second main surface; a side view cleavage presence detection unit for detecting the presence of the cleavage in the first main surface or the second main surface based on the side image; a cleavage position detection unit for detecting a cleavage position being the position of the cleavage in the first main surface or the second main surface having the cleavage; and printing units 21, 31 for printing the character or the mark based on the cleavage position, in the first main surface or the second main surface.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】簡易な構成で固形製剤に文字又はマークを高精度に印刷することができる印刷機を提供する。【解決手段】第1主面又は第2主面の少なくともいずれかに割線を有する固形製剤Tに文字又はマークを印刷する固形製剤印刷機100であって、前記第1主面と前記第2主面を繋ぐ側面の方向から固形製剤Tの側方画像を撮像する側方撮像部61と、前記側方画像に基づいて、前記第1主面又は前記第2主面における割線の有無を検出する側方視割線有無検出部と、割線を有する前記第1主面又は前記第2主面における割線の位置である割線位置を検出する割線位置検出部と、前記第1主面又は前記第2主面において、前記割線位置に基づいて文字又はマークを印刷する印刷部21、31と、を備えたことを特徴とする固形製剤印刷機100とした。【選択図】図1