How can I delete all printer settings?

Question

This was not always the case, but I've been having problems lately getting good prints from a HP PhotoSmart Pro B9180 from my Mac Pro since I installed Photoshop CS5. The printing problems - washed-out colors, especially reds- also happened with older versions of Photoshop, so it may not be the app that's causing this. I uninstalled, then reinstalled the HP drivers but the uninstall didn't delete all the settings accumulated over several years of printing. After lots of lousy test prints using different settings, I decided to try printing from another Mac that has never used this printer before. The prints came out right when printed with Photoshop CS1, which has a simpler print dialog than the later versions. By CS5, it has so many variables that it was hard to figure out which settings are affecting the quality.
I also tried printing the same file from Preview to rule out Photoshop as the cause. It was somewhat better but not as good as the print from CS 1 on the laptop.
I'm just trying to start with a clean slate to eliminate some of the variables that may be causing the print quality problems.
Where is the file or files that contain the list of saved printer settings? I looked in the User Library and its Prefs folder but discarding the HP Printer prefs file didn't delete the settings.

Answer 1

It seems to me that you’re having problems concerning colour management/profiles. In that case I’m not of much help. But you can try to reset the printing system of OS X and afterwards install your printer driver again. To reset the printing system open System Preferences/Print & Fax and right-click somewhere on the white space underneath your listed printers.