According to one embodiment, a tablet printing apparatus includes a conveyor configured to convey tablets sequentially supplied while sucking and holding the tablets； a print head (H) arranged to face the conveyor to perform printing on each of the tablets being conveyed； a position detecting device arranged upstream of the print head (H) to detect the posture of each of the tablets； and a print condition checking device (33) arranged downstream of the print head (H) to check print condition on each of the tablets. Suction force applied to the tablets is reduced at least in an area from a detection position to a print condition check position than in other area.
