The following appears on itworld.cananda.com

Hewlett-Packard has to changes as much as 70 per cent of the technology sitting in the toner cartridge to come up with the other technological advances found in the company’s new line of multi-function laser jet printers.

https://youtu.be/Vs0W1eQ9ZsY

Much of the re-engineering had to do with the machines’ toner cartridges.

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The toner cartridges also come with a chip that allows the machine to identify if the cartridge being loaded is genuine, counterfeit or a refilled one. Users have the option of “locking-in” cartridges so that they work only with a certain machine to prevent cartridge theft.

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