DEVICE FOR DELIVERING ELECTRONIC BOOKS, RECEIVER FOR ELECTRONIC BOOKS, AND CHARGING SYSTEM FOR ELECTRONIC BOOKS

摘要: PROBLEM TO BE SOLVED: To provide a means for preventing an electronic (E) book based on E information from being illegally copied and managing the payment (charging) of charge at time copying part with printer utilizing printed contents as book, in management charging by printer. SOLUTION: The is enciphered exclusive key (hereafter referred to reading key) delivered. Thereby, can not be read out without deciphering it. At receiving printing request signal delivered selected, printable delivery file formed condition added deliver detecting that 16, it charged then prevented out.