I've always just used the postscript method of a Canvas object to save to a postscript file, and then printed from the file, using ghostview, or something else which renders and prints postscript.

That is to say, I do something like this:

# Where $can is a Canvas object,
#   and $psfile is the file to write to ...

$can->postscript(-file => $psfile);
[download]

I haven't looked at the postscript module personally, but if it allows you to print from a file, then you could use my snippet above, followed by whatever lets you send it to your printer.