Epson EPL-6200 Reference Manual page 103

However, activating this setting may cause the print job to fail if
it is connected through a network instead of the parallel or serial
interface. Conversely, if your document fails to print when sent
to a printer connected through a parallel or serial port, change the
setting to Yes.
Send CTRL-D After Each Job
Specify whether a CTRL+D character should be sent at the end of
every PostScript document. CTRL+D at the end-of-file (EOF) will
reset your printer to its default settings to ensure that the current
print job will not affect future print jobs.
However, activating this setting may cause the print job to fail if
it is connected through a network instead of the parallel or serial
interface. If your document fails to print when sent to a network
printer, change the setting to No.
Convert Gray Text to PostScript Gray
Specify whether to convert true gray (RGB value) in text to the
gray provided by the PostScript driver.
Convert Gray Graphics to PostScript Gray
Specify whether to convert true gray (RGB value) in graphics to
the gray provided by the PostScript driver.
Add Euro Currency Symbol to PostScript Fonts
Specify whether to add the symbol for the Euro currency to the
set of PostScript fonts residing on the printer.
Job Timeout
Specify the maximum number of seconds that can elapse for a
print job to get from the computer to the printer before the printer
stops trying to print the document. If you enter "0" (zero), the
printer will continue trying to print indefinitely.
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Using the Printer Driver For Windows