A tablet printing device 1 according to one embodiment comprises: a conveyance device 20 that conveys tablets T； an ink-jet-type printing device 50 that has a row of nozzles in which a plurality of nozzles are arranged so as to intersect with the conveyance path of the tablets T conveyed by the conveyance device 20； and a control device 90 that controls the printing device 50 such that, in accordance with the density or shape of printing on the pills T, the resolution in one of either the conveyance direction of the tablets T or the row direction of the nozzles when printing is raised above the resolution in the other direction, and printing is executed.提供一種可抑制錠劑所被印刷之識別資訊的視認性之降低，防止錯誤用法的錠劑印刷裝置及錠劑印刷方法。實施形態所述之錠劑印刷裝置(1)，係具備：輸送裝置(20)，係輸送錠劑(T)；和噴墨方式的印刷裝置(50)，係具有複數個噴嘴是與被輸送裝置(20)所輸送之錠劑(T)之輸送路徑交叉的方式而排列的噴嘴列，對被輸送裝置(20)所輸送之錠劑(T)從噴嘴吐出墨水而進行印刷；和控制裝置(90)，係控制印刷裝置(50)，以使其隨著對錠劑(T)的印刷濃度或印刷形狀，而將進行印刷時的錠劑(T)之輸送方向的解像度及噴嘴之列方向的解像度的其中一方設成比另一方還高，來進行印刷。
