Oki OKIFAX 1050 User Manual page 46

many shades of gray
5 If necessary, use the Type of Original or No > key to set the level of contrast in your document.
Document Type
Documents with normal contrast
Documents which are too light
Documents which are too dark
6 Your documents are now ready for faxing or copying.
OF1050 Users Guide(96-01-30)
Contrast to Use
NORMAL
LIGHT
DARK