PURPOSE: To improve the convenience of the device by automatically printing out a post-it file and writing a post-it identifier at a position where post-it is added inside the file.
CONSTITUTION: Corresponding to the print-out designation of an operator, the post-it identifier is added at the position, where the post-it is added inside the file, and printed together with the contents of the file. When printing is finished, the post-it identifier is added at the leading part of the post-it file, and a post-it file (b) is printed out. Thus, when the file added the post-it is printed out, the post-it file is automatically printed out after the file is printed out so that labor for the operator to perform the print-out operation can be saved, and the convenience of the device can be improved by easily recognizing which part of the file added to the printed-out post-it file shows the post-it.