A printing apparatus includes an open/close lid configured to close or open a paper conveyance path of a recording paper, and a locking member configured to hold a closing state of the open/close lid by engaging with an engaging portion of the open/close lid, and to be capable to move to a position engageable with the engaging portion of the open/close lid or a position of retracting from the position engageable with the engaging portion of the open/close lid. The locking member moves to the position engageable with the engaging portion of the open/close lid at non-print time, and further moves to the position of retracting from the position engageable with the engaging portion of the open/close lid at print time.