the expendables

摘要

PROBLEM TO BE SOLVED: To improve identification accuracy of a genuine product in a consumable product. An ink cartridge 100, which is an example of consumables, is an ink cartridge mounted on a printing device 1, and includes a display unit 123 and a microcomputer 122 that controls the display of the 123. This microcomputer causes the display unit 123 to display a display image for authentication when the ink cartridge is authenticated by the printing device 1. [Selection diagram] Fig. 1