When printing completed tax forms from Adobe Reader, click the print icon and when the print screen comes up, select "Advanced" next to the printer selected and then ensure that "Print as Image" is selected, click "OK" and return to the print screen and select print. Black lines will no longer appear on the output forms from the printer. This problem showed up when trying to print from PDF to an HP Officejet J4580 printer, but a post on the HP Support Community website mentioned another printer that had this problem printing TurboTax generated tax forms.
