[webmaven]

> Find one that doesn't have a patent and reverse engineer it

At this point, it would be better to start looking at expired (and about-to-expire) patents. A circa Y2k printer would be a perfectly acceptable design, IMO.

[marketingPro]

I completely agree. But given I got 4 downvotes for offering to contribute to a FOSS, seems like demand is low.

[InitialLastName]

I'd be willing to bet you got those downvotes for an unverifiable and unlikely allegation that an HN mod is currently targeting you.

Glancing back through your posts, I see pretty clear reasons why people would have downvoted your gray ones.