I randomly (seemingly) lose communication with my printer.

I have to reboot to re-establish the communication. What can i do to prevent this? Or...Is there a way to re-establish communication with the printer without having to reboot?

computer: HP model m9450 w/ AMD 9650 quad core 2.3 GHz - 7GB RAM - 64 bit

Vista Home Premium - SVC pack 2

Printer: Lexmark x7350