Specifies the image file that should be used as a watermark. The supported image formats are TIFF, BMP, and JPG. If needed, the printer driver will convert the image used as watermark to the format of the page that is currently printed. For example, if a 24 bit color image is specified as watermark and the printer driver is set to generate monochrome images, the 24 bit watermark image will be dithered to monochrome and the monochrome image will be added to the page as a watermark.
Because watermarks can be stretched to fit the page, separate watermark image files can be set for portrait and landscape oriented pages. This way one can specify a portrait oriented watermark for portrait oriented pages and a landscape oriented watermark image for landscape oriented pages.