User`s manual

9–57Epson FX Emulation
Graphics, Double Density Double Speed
ASCII Code ESC Y n1 n2
HEX Code 1B 59 n1 n2
Purpose Selects double density, double speed bit image graphics of 120 dpi
horizontally and 72 dpi vertically.
Expression CHR$(27);”Y”;CHR$(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 This mode prints double density with no adjacent dots. It is similar to
ESC L, except that if the graphics data contain horizontally adjacent
dots, the data may print incorrectly. This feature is widely used to
move the print head precisely, by printing blank dot columns.
Example The following example produces a double density double speed
graphic image of the pattern used in the standard density example.
The amount of data must be doubled for double density (the data are
used 54 times rather than 27).