I've been having problems with printing through my DeskJet 1050 - I have it connected to an iMac, and I usually print PDF documents so I am unable to manually change the margins on documents. I use the printing options through the Preview program, and make sure I have the paper size correct (A4), and also make sure it is scaled to fit the page.
We just moved the Mac and printer today, so as such I just did a hard reset of the printer, and it hasn't helped. Would love to know what is wrong as it is making printing very difficult.