

This is the way. I have a decade+ old HP OfficeJet that I more or less inherited, and it has pigment black ink but dye color inks. When the colors are fine but the black is not, it’s because the black (pigment) cartridge is blocked again. It does this with both HP and third party blacks, though, so it’s definitely pigment vs. dye thing. Easy enough to clean with isopropyl, as you said.
But just to be clear, when we bought new earlier this year, it sure as hell wasn’t HP. I’ll ride that old OfficeJet and my 20+ year old LaserJet until they die, there’s no chipping of cartridges and I’m quite good at printer repair as long as parts are available and it’s not too complex, but otherwise I’m done with HP.



If you allow artists to display their work in various communities along with the ability to post links in their profiles, but you restrict actual posts to disallow self-promotion, it’s the best of both worlds, IMO.
In other words, if you can’t include self-promotion in your community posts, but everyone knows you have the links in your profile, it attracts less grifters and keeps the feed clean, while allowing anyone interested to contact a poster directly or ask them promotional questions via DMs.
That said, hosting a full-fledged marketplace is not a good idea, IMO. There are laws and banks involved, which mean lawyers and taxes, and volunteer management does not work for that. There are already marketplaces that do that well, and allowing artists to post their own links of choice in their profiles will let them steer actual business to other platforms, while keeping the fediverse for display, review, share and critique. My opinion, anyway.