Have you ever heard that using a compatible toner cartridge will “void your warranty?” Next time a repair technician says that, tell them to put it in writing. Chances are he won’t. Why? Because it can be illegal to require a consumer to use specific supplies in order to maintain a warranty.
You have the right to use the supplies of your choice! Printer manufacturer warranties state that the use of third-party supplies alone does not void your warranty. Warranties are only voided if the cartridge actually caused the damage. Under these circumstances, the cartridge remanufacturer will repair it.