Oki C8800 - Manual (Page 30)

A guide to printing > 30
B
LACKS AND GREYS
B
LACK OVERPRINT
Black overprint eliminates the white edge between the printed
fonts and the coloured background.
Black overprint can only be used when printing 100 percent black
text over a background colour.
Black Overprint may not be available with some software
applications.
Windows
1. On the [Job Options] tab, click [Advanced].
2. Check [Black Overprint].
NOTE:
1. The Black Overprint feature is not included in the
Windows PCL 6 driver.
2. When the background colour is very dark, the toner may
not fuse correctly. Change the background colour to a
lighter colour.