Canon MultiPASS F20 Software User's Manual page 44

3. In the Open dialog box, specify the path and filename for your
graphic. Then, click OK.
4. On the Stamp tab, move the Size slider to the left to decrease the size
of the graphic, right to increase.
5. Click Transparent White Area to make the white areas in the graphic
transparent.
To define the placement of a stamp:
On the Placement tab, specify the following settings:
Chapter 3 Printing 40