The present invention provides a printing apparatus capable of checking the state of the printing medium (how the state of print is changing, the transport state of the printing medium, etc.) during the post-process. A printing apparatus (1) includes a printing unit (10) that prints on a roll paper (P), a transporting unit (20) that transports the roll paper (P) having been printed on along a transport surface (53), and a drying unit (60) that performs a drying process (post-process) on the roll paper (P) on the transport surface (53). The drying unit (60) includes a cover (casing 62) that covers the roll paper (P) on the transport surface (53). The cover has an inspection window (100) that allows the roll paper (P) on the transport surface (53) to be visually inspected.