A system receives a Web page and prints the same onto paper. Then, an image depicted on the paper is read. A written image that has been added to the paper after printing the Web page is obtained by comparing the Web page with the image. The latest version of the Web page is outputted together with the written image as required. A flag indicating whether or not a user has browsed the latest version is stored. Further, an update date/time of the Web page is received at every predetermined time. If the Web page has been outputted to the user, the flag of the user is updated to "already-read". If the Web page is determined to have been updated based on the update date/time indicated in the received update date/time information, or if the written image has been obtained, all the flags are updated to "unread".