I’ve never used an ink-tank printer, but I’ve read that they have “pads” that wear out, and some ink-tank printers require you to throw away the entire printer when that happens. Doesn’t sound too great.
Also, inkjets suffer a lot of clogging, smearing, and other such problems stemming from the use of liquid ink. These problems go away (temporarily, at least) when you replace the ink cartridge, but how do you solve them when there’s no ink cartridge and the print head is part of the printer?
Soaks up ink? I’m confused. How does ink end up somewhere other than the paper being printed on?