i've been using this printer more than a year, printing manual duplex without any problem,
then suddenly the printer is not printing duplex anymore, the popup window that says to put the paper
again actually pops up, but the printer doesnt stop printing, and printing on one side.
when the printer is done printing, the popup window closes itself.
i've been trying to reinstall the driver from here:
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?cc=us&lc=en&dlc=en&product=4110304
still have the same problem.
can you help me?
thanks.
