A printer includes a printer body, a lid, a damper spring, and a slidable part. The lid is connected to the printer body so as to be opened and closed relative to the printer body. The damper spring is provided on the printer body and includes a coil spring and first and second ends extending from first and second ends of the coil spring, respectively, and engaging with each other. The damper spring exerts a restoring force in a direction to move the first and second ends of the damper spring away from each other. The slidable part is provided in the printer body. When the lid is opened, the slidable part is pressed by the lid so as to press the first end of the damper spring so that the damper spring exerts the restoring force in a direction to close the lid.