| 摘要 |
PROBLEM TO BE SOLVED: To provide a printing consumables system in which even if a user attempts unauthorized means with respect to a cartridge, it ends up in a futile attempt.SOLUTION: A printing consumables system uses a cartridge 1 having an IC chip part 10 that stores information for managing the quantity of printing consumables, and includes one or more of first control means for discovering information alteration and correcting the alteration, second control means for determining the information alteration act by the IC chip part 10 and invalidating the alteration act, and means for performing an alteration act and performing regular product determination for the IC chip part 10 through its success or failure check. |
