PowerPoint 2010 not printing Grayscale

Unable to print PowerPoint 2010 handouts in grayscale format. I select "Grayscale" in the print setup, and select grayscale on the printer properties, and set the screen view to Grayscale. But pages still print in color. I found many posts on this issue on MS Office forums, but have not seen any solution.

My PPT slides include lots of color graphs, tables, excel tables pasted in as bitmaps. Lots of dark color on screen, but I need it to print in grayscale. Slides were created in PPT 2007 (some in ver 2003), and printed fine using Office 2007 and Win XP. Now with recent upgrade to Win 7 and Office 2010, this problem started.

Dell Optiplex 7010 desktop. Windows 7 with all updates. Office 2010 SP-1.
Printing to HP LaserJet 9500 MFP. Using the latest driver i can find in Win 7.

I can work around by printing in grayscale to MS XPS document writer, saving the XPS file, then printing the XPS file. But that's clunky.

It's an old problem - someone must have solved it.

 

If you are happy with modding the registry try this:

Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\PowerPoint

Create a DWord IgnoreDevModeColor

Set the value to 1