Put the cartridge back into the printer. The printer should now read the toner level as "Full" or "100%."

If you own a modern Canon laser printer—specifically the imageCLASS series (MF269dw, MF267dw, MF264dw, MF249dw, MF247dw, MF244dw, MF236n) or the LBP (LBP162dw, LBP151dw) lineup—you have likely encountered a familiar frustration: your printer suddenly stops working, claiming the toner is “empty,” even though you know there is still plenty of print quality left in the cartridge.

Fact: In the US, the Magnuson-Moss Warranty Act states that a manufacturer cannot void your warranty simply for using third-party supplies or resetting chips, unless they can prove the resetter caused damage. A resetter does not send signals to the printer’s mainboard; it only touches the cartridge’s chip.

: It communicates with the printer via an encrypted "handshake" to verify the cartridge is genuine and compatible.

Expect to pay between $12 and $30. Brands like Ink2Image , DoItWiser , and GPC Image make reliable units. Always read recent reviews to ensure the resetter works with the latest printer firmware updates (Canon occasionally updates printer firmware to try to block resetters, though this is rare).

These cartridges are popular because they produce sharp text, deep blacks, and reliable performance. However, like all modern laser cartridges, they contain a non-volatile memory chip. This chip tracks:

Stop letting a tiny silicon chip hold your printer hostage. Buy a Canon 337 Toner Chip Resetter today, and take control of your printing costs.

Why? Because while you physically added toner, the electronic chip on the side of the cartridge still thinks it is empty. It has reached its programmed page count limit and has "locked" the cartridge as depleted. The printer is blind to the powder inside; it only listens to the chip.