Epson LQ-2550 User Manual - Page 234
Graphics
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ESC 7 Enable Upper Control Codes Format: ASCII code: ESC 7 Decimal: 27 55 Hexadecimal: 1B 37 Comments: When the Epson Extended Graphics character table is selected, this code causes codes 128 through 159 to be treated as control codes. This is the default. Graphics See Chapter 4 for sample graphics programs. See the table under ESC * for graphics modes. ESC K Select Single-Density Graphics Mode Format: ASCII code: ESC K nl n2 Decimal : 27 75 nl n2 Hexadecimal: 1B 4B nl n.2 Comments: Turns on 8-pin, single-density graphics mode. The total number of columns = n7 + (n.2 X 256). ESC L Select Double-Density Graphics Mode Format: ASCII code: ESC L n7 n2 Decimal: 27 76 nl n2 Hexadecimal: 1B 4C nl n2 Comments: Turns on 8-pin, low-speed, double-density graphics mode. The total number of columns = nl + (n2 X 256). 8-34 Command Summary