Comment 19 for bug 235399

If you want the printer to print in true black you can select (300/600/1200dpi) Grayscale, Black cartridge.

The easiest way to do this is to to run hp-toolbox, click the printer, then click print settings, under "Quality' select the setting you'd like.

To run hp-toolbox in ubuntu you may need to run:

sudo apt-get install hplip-gui

then run

hp-toolbox

I've looked in the Photosmart 8000 series ppd and it does have these options so you should have them as well.

Also another way to do this is to run hp-setup to configure another printer queue, then configure that queue with the settings you prefer. Then when you want to print true black you print to the other print queue, and then you want to print color you print to the color printer queue.

Hope this helps.

Aaron