Brother did not invent ink tanks. According to https://en.wikipedia.org/wiki/Supertank_printers https://en.wikipedia.org/wiki/Supertank_printers, Epson first in

Brother did not invent ink tanks. According to https://en.wikipedia.org/wiki/Supertank_printers https://en.wikipedia.org/wiki/Supertank_printers, Epson first introduced supertank printers to the US market, but continuous ink systems with (I assume) external tanks are at least 15 years old: https://en.wikipedia.org/w/index.php?title=Continuous_ink_system&dir=prev&action=history https://en.wikipedia.org/w/index.php?title=Continuous_ink_sy.... As far as I can tell, your linked article doesn't even claim that Brother invented ink tanks, merely that Brother sells them and they are good.