Epson EPI-4000 User Manual page 263

DEL
The EPI-4000 handles the DEL command as a BS command. Print
portion return is the same as for an LQ or FX printer, although the
EN-4000 does not clear previous characters.
CAN
Although an LQ or FX printer clears the data in its print buffer in
response to this command, the EPI-4000 printer prints the data.
ESC EM
The EPI-4000 supports only R for n.
ESC &, ESC K, ESC L, ESC Y, ESC Z, ESC *, and ESC ^
The EN-4000 uses an image processing technique that emulates, as
closely as possible, the image densities available on LQ and FX
printers. Because of this process, the graphics commands listed
above do not produce exactly the same output on the EN-4000 as
they would on an Epson LQ or FX printer.
Command Summary
Modes and Commands
LQ/FX Emulation
for
B-23