They will use CC BY-NC-SA 4.0. Which means it’s not open source, and no-one else can sell replacement cartridges, parts etc.

It might still be a good printer and enjoyed by some, but it really annoys me when companies mix these terms up, almost certainly deliberately.

Despite the clickbait headline this isn’t open source

Open Printer will use the Creative Commons BY-NC-SA 4.0 license

The NC license isn’t open source, it violates point six of the OSD