Apple have just released iOS 4.2 which includes the ability to print. As part of PatentSafe we have a IPP print server written in Java which can accept print jobs from the iPad and other iOS devices. We also have some Java code which advertises the printer to iOS devices either locally or via wide-area Bonjour.
The net result of this is we have a pure Java print server which you can print to from an iOS device. You can print from your iPad to the server, which will produce a PDF as a result.
We’re aware this might be of interest to other people; if you have an application where you feel it might be of use, drop us a line and we can discuss… and if you need help writing/perfecting your own iPad print server I am sure we can help.