| 摘要 |
A Point-of-Sale (POS) terminal 3 of a POS system 1 may be equipped with an ink-jet printer. An ink cartridge 15 serving as an ink supply source is loaded onto a cartridge loading section 16. The ink cartridge 15 may be equipped with an IC memory chip 27 having ad information retained therein. When the ink cartridge 15 is loaded onto the cartridge loading section 16, ad information 6 may be read by the POS terminal 3. The ad information 6 may be printed on a receipt 17 to be issued or displayed to a display device 19. So long as an ink cartridge provider receives charges for advertisement from a commercial sponsor, the provider is able to sell large numbers of ink cartridges inexpensively. Further, the user of the POS system can purchase ink cartridges, which are consumable items, at low cost.
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