[dotancohen]

At the 2400 DPI that an HP printer can handle, the printer needs to place the head at 1/100 mm precision three times for every single dot on the page, and not smear them, despite not knowing what thickness or weight or finish the paper has. That is not trivial.

[a96]

2400 dpi is not the bar for entry, though. Even 240 would qualify as a printer, albeit not a good one (SOTA in 1995 maybe).

[dotancohen]

I respectfully disagree. For all the use cases shown on the linked page, a 240 DPI printer would not be acceptable.

[a96]

Yes. There's the obvious difference of "it's a working printer" and desirable and useful product. You don't need to be state of the art to be in the first category was my thought.