Epson GT-6500 EN - Manual (Page 97)

Image definition commands
Set conditions for image reading with these commands.
Set brightness ESC L
Set gamma correction ESC Z
Download gamma table ESC z
Set sharpness ESC Q
Image processing commands
Process images before data transfer with these commands.
Set halftoning mode ESC B
Download dither pattern ESC b
Set color correction ESC M
Download color correction ESC m
Set auto area segmentation ESC s
Supplemental commands
Operate the scanner mechanism with these commands.
Initialize the scanner ESC @
Set line counter ESC d
Set scanning mode ESC g
Control option ESC e
Eject document FF
Control codes
Perform handshaking between the computer and scanner using these
commands.
Header STX
Abort scanning CAN
Normal response ACK
Abnormal response NAK
Command Reference 3-3