Epson PERFECTION 1640 SU Reference Manual page 24

❏ Some applications do not support linkage to scanners and
digital cameras. Only applications in the Send to this
application list support linkage.
4. Click Apply and then OK.
Disabling the Start button
If you need to disable the "Scanner events," select the Disable
device events check box in the EPSON Perfection 1640
Properties dialog box. When this check box is clear, Windows 98
or 2000 can detect if the ] Start button on the scanner is pressed
and then launch the application you selected in the Send to this
application list.
1-14
Using the Start Button