DATA COMMUNICATION PROGRAM, COMPUTER-READABLE RECORDING MEDIUM WITH DATA COMMUNICATION PROGRAM RECORDED THEREON, DATA COMMUNICATION DEVICE AND DATA COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To conduct more appropriate communication of firmware in consideration of the operating state of a reception side without placing a burden on a sending side. SOLUTION: A printer controller of an image producing device, if e-mail with firmware attached is received (S1407), downloads it to extract the firmware (S1409), and then stores, in a S-RAM, the firmware together with a check sum value and a module number (S1413). If a preset firmware-rewritable-time arrives (S1414), firmware data and the module number are transferred to the image producing device, which rewrites the firmware (S1419).