personally, I really hope that flash/Java don't have access to my printer at all. It's just an open arms invitation for stupid 13 year old 'L33T H4x0Rz' types to try and prank peoples' computers.
(it was bad enough when they could have a Java applet read the contents of any web page visitor's hard drive and display it on a web page.)
I can just see getting redirected to some warez page, and all of a sudden my printer starts spitting out ASCII-art hackers' logos.