Hi Vickie
I'm assuming you are talking about a lot of orders - 100 orders would take less than 5 minutes to print on a fast printer and there's no need to do that in advance.
I would be leery of letting a computer print out lots of paper unattended - the chance for a problem is too high. Why not just print the whole range when you come in the next morning to PDF (which is extremely fast) and then you can print the PDF file to printer as needed?
Steve