It is important to select the 'transparency' setting in the paper type section of your printer settings dialogue box.

As all printers use slightly different phrasing in these options, it is impossible for us to recommend the exact setting, but it is likely that at least one 'Inkjet transparency' or 'Overhead projector paper' setting will be offered. 

Choosing that should ensure the correct results and if you have any queries we would recommend you ask us in a helpdesk ticket.