Are you referring to the HP LaserJet 1020 Printer?
This printer will not work with Trisquel. It requires a driver plug-in and
non-free firmware which has to be downloaded separately. Nobody here would
recommend and it isn't ideal for GNU/Linux use in general because of these
problems.
ThinkPenguin (I'm CEO) doesn't sell laser printers at the moment although we
do have three inkjet models if that would work.
You can actually figure out which laser printers work pretty easily if you
know what your doing. HP documents it pretty well on there web site. It isn't
perfect though so you do have to be careful still (ie you might run into
issues still).