EPSON AcuLaser C3800 User's Guide
5. Select a watermark from the Watermark
6.Select the location on the page where you want to print the watermark by dragging the watermark image on the preview window. To resize the watermark, drag its handle.
7.Adjust the image density of the watermark with the Intensity slide bar.
8.You can rotate custom text watermarks by inputting the degrees in the Angle box. Or select the Rotate by mouse check box, then rotate the text watermark with the pointer on the preview window.
9.Click OK to apply the settings.
For Mac OS 9 users
1.Click the 
Layout icon on the Basic Settings dialog box. The Layout dialog box appears.
2.Select the Watermark Settings check box, then select a watermark from the Watermark
3.Select the location on the page where you want to print the watermark by dragging the watermark image on the preview window. To resize the watermark, drag its handle.
Using the Printer Software with Macintosh 116