Trouble with Designjet 110plus: Cannot get Cyan or Black to print. When I change the printhead, the machine does not recognize it for both black and cyan. Machine DOES NOT show error on any printhead or cartridge. I am using a Continuous Ink System, however, have tried this with HP cartridges as well. No errors there either. Ink is collecting on the cyan printhead but not printing on paper. There is not even a hint of cyan on the calibration pages. Ink is not coming through the black printhead. If I wipe the black printhead on the damp paper towel and reinsert, I get black for the first and half of the second calibration pages but none on the third. I have soaked both printheads overnight in alcohol to remove any dried ink or blockages and when wiped on a damp paper towel, both printheads leave sufficient ink behind to indicate the are flowing. I have taken apart the mechanism that the printheads go into and cleaned the pins, soaked them overnight in alcohol, used a syringe to pull ink through the pins and ensure there are no blockages in the pins or the tubes. I have taken apart the mechanism that the cartridges go into and clean the springs, guides and pins there also by soaking in alcohol and injecting/removing ink to ensure no blockages. I have cleaned the cartidges and they are full. No kinks in any of the lines. The questions: Why does the machine not recognize NEW printheads? Why if the machine shows no errors will it not print cyan or black? Why does black print for a page and a half after being ''primed'' on a damp paper towel and then stop? PLEASE HELP!!!! I AM AT MY WITS END AND THERE IS MORE INK ON ME THAN ON THE PAPER!!! -Paula