Information on Cartridge Warranty information:
The HP cartridge warranty is only applicable when the product is used in its designated 123 HP Envy 4520 Printing device. The end of warranty date can be found on the product in YYYY/MM format. The duration for the warranty period of the product is covered as long as the HP ink is not depleted and till the end of warranty date. This warranty is not applicable to HP ink cartridges that are refilled, re manufactured, refurbished, misused or tampered with.
Anonymous Printer Usage Information:
The HP Cartridge used in this Printer contains a memory chip that supports the operation of the printer. In addition, this memory chip has a limited capacity to store a standard set of anonymous information. i.e., Number of Pages printed, Page Coverage, Frequency of Printing and Print Modes etc,.
This memory chip information helps 123 HP Envy 4520 design future printers according to customer needs. If you prefer to not allow access to the memory chip you can make it inoperable. Once this is done then the Cartridge itself will become unusable in an 123 HP Envy 4520 Printer.