Epson 8900 Series - Manual (Page 152)

IBM Proprinter XL Emulation 7-22
Select 60 dpi Graphics
Escape sequence: ESC K n1 n2
Hexadecimal: 1B 4B n1 n2
This command selects the 8-pin, 60 dpi graphics mode for the
horizontal line length specified by the two-byte variable n1 n2.
Select 120 dpi Graphics
Escape sequence: ESC L n1 n2
Hexadecimal: 1B 4C n1 n2
This command selects the 8-pin, 120 dpi graphics mode for the
horizontal distance specified by the two-byte variable n1 n2.
Select High-Speed 120 dpi Graphics
Escape sequence: ESC Y n1 n2
Hexadectmal: 1B 59 n1 n2
This command selects the 8-pin, high-speed 120 dpi graphics mode
for the horizontal distance specified by the two-byte variable n1 n2.
This is identical to the double-density graphics mode except that the
printing speed is doubled.
Select 240 dpi Graphics Mode
Escape sequence: ESC Z n1 n2
Hexadecimal: 1B 5A n1 n2
This command selects the 8-pin, 240 dpi graphics mode for the
horizontal distance specified by the two-byte variable n1 n2.