Hello I have a retail copy center but more and more I have people emailing 1 or 2 sheets they want printed in black ink...and many a day....to stop for a .15 cent copy seems odd...and so many repeat customers. Is there a product out that is super simple setup like a bluetooth printer where a customer can easily walk in connect and print? and needs to be super easy and dummy proof! Anything? Bonus if it has a glass to make a black ink copy of a single item like license? 8.5x11 only is perfect....Thanks in advance!!!