PURPOSE: To file sheets simultaneously with the termination of printing by installing a sewing hole punching part at the downstream of a printing part and making a sewing hole at the left side of the printing form after the end of printing to discharge it.

CONSTITUTION: The sewing hole punching part equipped with a punch 10 on a sewing hole punching belt 9 is installed at the downstream of the printing part. A data image formed on a printing drum 6 by a developing part 7 is transferred on the printing form 1 fed from a cassette 2, and fixed by a fixing roller 8. Then the punch 10 makes a sewing hole at the left-hand side of the form 1, and the form is discharged. Accordingly forms can be filed as they are, because a sewing hole is made simultaneously with the termination of the printing.