A personal computer acquires the number of pages L to be laid in one surface of a medium specified by a user, thereby acquiring a page number K to be considered to be a page break for one copy. A counter is incremented every time print data corresponding to one page are transmitted to a printer. When the value of the counter has exceeded the page-break page number K, recording of a top page of the next copy on the same recording paper is prevented by inserting a blank page, so long as the counter does not assume a multiple of the page number L.