@tokyoracer,
Sounds like a win printer. All the processing power is in the windows host (i.e PC) to enable HP to make the printer cheaper. Problem is you can't get them to work with an Amiga - directly that is. If you have your Amiga on a network together with a Windows machine, you can make it work using Ghostscript and Redmon on the Windows machine. See my post on
aw.net a few years back. It worked very well for me at the time using an HP722c.