WordNet
ink cartridge
n. a cartridge that contains ink and can be replaced
Wikipedia
Ink cartridge
An ink cartridge or inkjet cartridge is a component of an inkjet printer that contains the ink that is deposited onto paper during printing.
Each ink cartridge contains one or more ink reservoirs; certain producers also add electronic contacts and a chip that communicates with the printer.
Usage examples of "ink cartridge".
By making the ink cartridge expendable, the whole structure is given extended life at the expense of the sub-structure.
The flexible ink cartridge, which had popped out of the broken pen, was bent in the middle.
The ink cartridge was metal, with a small plastic cap above the refill opening.
I don't suppose the ink cartridge will poison him but how about the metal and plastic?