Epson Perfection 640U Reference Manual page 13

Copy
Use this application to turn your scanner into a digital copy
machine. The application looks like a real copy machine, yet its
functions are far more powerful and flexible than the
conventional copy machines. For details, refer to the EPSON
SMART PANEL for Scanner documentation.
Note:
By default, this application has been assigned to the t Copy button. For
details, see "Using the Copy Button to Copy" on page 1-11.
1-5
Using the Buttons