User`s manual

Epson FX Emulation9–56
Graphics, Double Density
ASCII Code ESC L n1 n2
HEX Code 1B 4C n1 n2
Purpose Selects double density bit image graphics of 120 dots per inch.
Expression CHR$(27);L;CHR$(n1);CHR$(n2);DATA
where n1 + 256 n2 define the number of data bytes to follow.
DATA = ASCII characters for the dot pattern bytes.
NOTE: “DATA” consist of 8–bit dot columns, with the MSB at the top, and
“1” bits producing dots. For more information, refer to the bit image
section in the Graphics chapter.
Comment Double density printing reduces print speed. You can change
graphics density with the ESC ? command.
Example The following example produces double density bit image graphics
of the pattern used in the standard density bit image mode example.
The amount of data must be doubled for double density (the data are
used 54 times rather than 27).