THERMAL DEVICE

PURPOSE:To prevent to leak important information of an account number, a code number, etc., by printing and outputting after special information concerning a customer is coded. CONSTITUTION:When a card 12 is inserted to a reading part 10 by an operator or a customer, an account number K is sent through an AND gate 9, an OR gate 13 and an AND gate 11 to a register 15 of a coding part 14. At the coding part 14, an output terminal of respective digits of the register 15 and an input terminal of a register 17 are linked crossing each other by four-digit unit, and information of the register 15 is converted to information of eight digits with different permutation and set to the register 17. Namely, the account number K is converted (coded) to the data K of another arrangement. The coding data K is sent to a printing control part 6 and printed and outputted to a form 7.