Epson B 310N - Manual (Page 97)

Printing with Special Layout Options 97
8. Specify the settings you want for the watermark. You can change the position and size
of the watermark by dragging the image within the preview window.
9. Click OK to return to the Page Layout window.
10. Click OK to close the printer settings window.
After completing the steps above, print one test copy and examine the results before
printing an entire job.
Creating Your Own Watermark
You can add your own text-based or image-based watermarks to the Watermark list.