Printing is declining

Yes, they have a chip in the toner cartridge. They also region lock the cartridges and printers with different physically incompatible keyed notches, even though they have the exact same toner in them, to keep people from shipping the cartridges from region to region for arbitrage.

I recently ran into this when I took a printer with me overseas and found I couldn’t buy the correct EU cartridges anymore in Asia. I ended up having to dremel the correct notch and pull the chip from the old cartridge to put it in the new one.