Epson GT-6500 EN - Manual (Page 109)

❏ Steps 2 and 3 should be repeated for the three colors for the
number of lines (minus 1) specified for the image until the last
data block is encountered.
❏ Do not send the ACK code after the last data block (the last blue
data).
Color byte sequence mode
Handshaking:
1 ESC G command
2 Data block (image data for one block)
3 ACK code
4 Last data block (last line of the page)
❏ Steps 2 and 3 should be repeated for the number of lines (minus
1) specified for the image until the last data block is encountered.
❏ Do not send the ACK code after the last data block.
Command Reference 3-15