CanonReviews of shop.usa.canon.com

I own a ImageClass MF743CDW laser printer. Canon has configured the firmware so that when it requires a reduce back side stain cleaning it will only do it with OEM toner cartridges (which cost 4x the price of aftermarket) otherwise the printer will not print and they will not support the warranty. Non OEM cartridges do not have chips that can detect the amount of ink. Canon should not require owners to use Canon cartridges just for cleaning functions. They should update the firmware to remove this limitation.