Konica Minolta bizhub C550 - Manual (Page 220)

Setting up the PostScript driver (Windows) 6
C550 6-25
6.6 Specifying the Stamp/Composition tab settings
Printing a watermark
You can print specific text in the background as a watermark.
1
Click the Stamp/Composition tab.
2
Select the “Watermark” check box.
3
From the list, select the watermark that you want to print.
!
Detail
For Windows Vista x64, the watermark function cannot be specified
when the following functions are specified at the same time.
User Authentication
Account Track
Per Page Setting
Verify Authentication settings before printing
Popup Authentication Dialog when printing