Dear Gocco, we don't seem to be friends do we? After a few trips to the local library's photocopier, two used screens and four bulbs I can't seem to get a better print than this. I think solid lines might work best so I'm playing around with the original drawing in photoshop to try and make it more suitable... the saga continues (until I use up all my supplies).

In response to the comments on my previous post, the remaining Gocco printers are now being sold by an Australian company called Nehoc. You can find them here. You can also occasionally find them on ebay (which is where I found mine). They do seem to be a dying breed though.