I don't want to rain on your parade, but as far as I know HP no longer supports this printer.
I had one and loved it. Thought that it would give Epson and Canon a run for market share. I was wrong for HP bowed out of the market. When my 9180 developed problems with the "ink carriage" not tracking properly, and I could not get any help from HP, and I had no interest in being my own maintenance techie, I through it in the dumpster and bought an Epson R3000. And now I no longer miss my 9180.
Ciao,
Doug