unknown

asked Jun 6, 2011 at 7:35am
Hp HP DeskJet Plus

HP 750C plus does not print

My plotter has worked for years.
Lately it has been acting like the ink cartridges are empty.
After replacing the cartriges a couple of times,
it still goes thru the motions of printing, but no ink comes out.
Can this problen be something other than just replacing the cartridges?