[QUOTE] As I stated, I wasn't there, so I'm guessing. I'm assuming the incident was accurately reported, and I can't think of a good reason for a cartridge with a head built in would have a expiration date that would shut down the printer.[/QUOTE] A good reason? From the manufacturers point of view, refilling is a very bad thing to do. Most of the profit comes from those cartridges, not from the printer price. Anything you can do to prevent refilling increases the bottom line.