Here at Primoprint, we print "head to head" or "top to top." Meaning that the stock will be flipped from left to right to print the back side. Please keep this in mind when submitting files in different orientations, i.e., one landscape and one portrait.
To ensure that your project prints successfully we have created this helpful Infographic to assist you with proper file orientation. Our Processors do check every file you submit, however with correct file upload the time spent adjusting artwork files will be minimized.