Epson EPL-7000 User Manual page 110

OFF
* O N
When this option is ON, you can print up to 80 characters at 10
cpi across an A4 or F4-size page. When it is OFF, you can print up
to 77 characters at 10 cpi. This setting is only valid when P-SIZE is
set to A4 or F4. If you change the WIDE PAGE setting when sizes
other than A4 or F4 are selected with the P-SIZE option,
L-MARGIN automatically defaults to 0 and the R-MARGIN and
the TEXT LINES return to the default setting for the currently
selected paper size.
* DARK
LIGHT
BCODE
With B-IMAGE set to DARK or LIGHT, your printer can correctly
emulate the graphics densities set with the printer commands.
When DARK is selected, the bit image density is high. When
LIGHT is selected, the bit image density is low.
The BCODE setting converts bar codes to bit images by
automatically filling in any vertical gaps between dots. This
produces unbroken vertical lines that can then be read by a bar
code reader.
Note: This mode reduces the size of the image being printed
and may cause some distortion when printing bit image graphics.
Using the SUB CONFIG Option
SelecType 3-47