Slide print out dark and muddy due to incorrect color mode set for printer.
Cause:
Color slides are printed to a black and white printer in color mode
Solution:
Print slides to a black and white printer in black and white mode.
1) Select the 'File' menu and select 'Print...'. (The Print dialog box appears.)
2) Select the 'Black & White' check box.
Black & White
3) Click 'OK'.