The following settings can be changed to give cleaner prints of your mesh plots:

Turn off min/max symbols and XYZ axis system PlotCtrls -> Window Controls -> Window Options ... -> Min-Max Symbols -> Off; Location of Triad -> Not Shown

To get a white background.

PlotCtrls -> Style -> Colors -> Reverse Video

PlotCnrls -> Style -> Background (leave all options unchecked)

Change BC symbols to darker color. PlotCtrls -> Style -> Colors -> BC Colors ... Set U and Rot to darker colors.

Replot elements to cause these settings to take effect.

To obtain hard copy: PlotCtrls -> Hard Copy -> To Printer