Epson EPL-5000 Guide De L'utilisateur page 631

If your pattern is too heavy, change the setting to LIGHT as described
in the following procedure; if it is too light, change the setting to
DARK; if you are printing gray shading or screen patterns, change the
setting to OFF.
To change the RITech setting, follow these steps.
Using SelecType:
Enter SelecType Level 2 and press u or d until Ritech appears on the
display; press r and then press u or d to select your desired setting
(LIGHT, MEDIUM, DARK, or OFF); press r and press Exit.
Using the printer driver:
Click the SelecType button in the Main window, then change the
setting in the RITech pull-down menu.
Using the Remote Control panel utility:
Bring up the Remote Control Panel by typing EPRCPL at a DOS
prompt; select the appropriate emulation from the main Remote
Control Panel window; click the Printer Setup button. Then change
the RITech setting.
If the pattern still needs to be improved, you probably need to change
the print density setting. For a darker RITech setting, make the print
density lighter and vice versa. See the next section.
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Troubleshooting and Maintenance