As promised I am publishing the sample for network printing on Windows Phone 7 Mango. It is a proof of concept and it is the same I did more than a year ago on Monotouch. It uses sockets to connect to a network printer and send one page that contains two rectangles (one with shadow and one without shadow) and some text. It is an implementation of PCL5 (not a complete one of course). Hope that somebody will take the time to finish implementation. If so please let me know cause I will need it.