Epson GT-6500 EN - Manual (Page 158)

FF Eject document
Format: EXT
Command: ASCII: FF
Decimal: 12
Hexadecimal: 0C
Parameter: (none)
Handshaking:
1 FF code
2 Data block
Explanation:
Upon receiving this command, the scanner ejects the document
currently loaded in the Automatic Document Feeder.
3-64 Command Reference