Printer Cartridge Expiration Dates

Check Refurbished Printer Cartridge Expiration Date

There is a date on each printer ink cartridge. There is evidently a microchip in the ink cartridge that tells the printer when that date has arrived. When that date gets here, it is considered to be an expired cartridge and will no longer work.

I no longer refill them close to or past the expiration date, and I will open the box and check the expiration date of refurbished ones at the cash register before I drive all the way back home.
Source: HP customer service rep