A bankbook printer has: a conveying device (7) for conveying a bankbook in predetermined directions; a reading device (2) for reading magnetic information, which device is provided near the conveying device (7); an optical device (1) for reading optical information printed in a bankbook which is being handled by the conveying device (7); a printing device (3) for performing printing to a bankbook, which device is provided substantially in the middle of the conveying device (7); a page-turnover unit (8) for turning pages of a bankbook in response to a signal from the optical device (1); a transmission control device for sending/receiving information to/from the magnetic and optical devices (1) and the outside; a storing device for storing information read by the magnetic and optical devices; and a control device (6) for controlling all of the devices described above. Two types of page-turnover units are provided: a page-turnover unit for handling a bankbook with left-to-right turning in which printing is performed perpendicularly to its spine; and a page-turnover unit for a bankbook with top-to-bottom turning in which printing is performed parallel to its spine, and page-turnover units of both types are detachable from the printer main body. Either one of the page-turnover units is selectively connected to the main body.