A printing apparatus is provided. The printing apparatus includes a printing unit, a sheet feeder, a discharge unit, a sheet path including a feeding path, a discharge path, and a reversing path, a manual sheet inlet and a manual sheet path for a manually-inserted recording sheet, a detecting unit to detect the manually-inserted recording sheet fed through the manual sheet inlet whilst a double-face printing operation is conducted with a preceding recording sheet, a judging unit to judge as to whether the detecting unit detected the manually-inserted recording sheet, and a conveyer controller unit to convey the preceding recording sheet in the double-face printing operation to the discharge unit without reversing when the judging unit judges that the detecting unit detected the manually-inserted recording sheet.