| Epson | Commands |
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| Notes |
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| Function | (ASCII, Decimal, Hexadecimal) |
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| n1, n2= 0 to 255: specifies amount of sub- |
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| sequent Bit Image bytes received, calcu- |
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| lated as n1 + (n2 x 256) |
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| Graphics, 8 |
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| Single Density Graphics | ASCII: ESC K n1 n2 [graphic data] | Dot density 60 dpi horizontal, 72 dpi |
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| Dec: 27 75 n1 n2 [graphic data] | vertical. |
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| Hex: 1B 4B n1 n2 [graphic data] | Maximum data per line: ML390 |
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| Turbo=480: ML391 Turbo=816 |
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| n1, n2= 0 to 255: specifies amount of sub- |
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| sequent Bit Image bytes received, calcu- |
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| lated as n1 + (n2 x 256) |
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| Double Density Graphics | ASCII: ESC L n1 n2 [graphic data] | Dot density 120 dpi horizontal, 72 dpi |
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| Dec: 27 76 n1 n2 [graphic data] | vertical. |
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| Hex: 1B 4C n1 n2 [graphic data] | Maximum data per line: ML390 Turbo= |
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| 960: ML391 Turbo= 1632 |
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| n1, n2= 0 to 255: specifies amount of sub- |
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| sequent Bit Image bytes received, calcu- |
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| lated as n1 + (n2 x 256) |
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| Quasi Double Density | ASCII: ESC Y n1 n2 [graphic data] | Same as double density graphics (120 |
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| Graphics | Dec: 27 89 n1 n2 [graphic data] | dpi), but printer can't put two adfacent |
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| Hex: 1B 59 n1 n2 [graphic data] | dots in the same row. |
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| Quadruple Density | ASCII: ESC Z n1 n2 [graphic data] | Dot density 240 dpi horizontal, 72 dpi |
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| Graphics | Dec: 27 90 n1 n2 [graphic data] | vertical. Printer can't put two adjacent |
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| Hex: 1B 5A n1 n2 [graphic data] | dots in the same row. |
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| Maximum data per line: ML390 Tur- |
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| bo=1920: ML391 Turbo=3264 |
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| n1, n2= 0 to 255: specifies amount of sub- |
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| sequent Bit Image bytes received, calcu- |
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| lated as n1 + (n2 x 256) |
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| Reassign Graphics | ASCII: ESC ? m n | Converts ESC K, ESC L, ESC Y, or ESC Z |
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| Dec: 27 63 m n | command to a graphics select com- |
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| Hex: 1B 3F m n | mand: |
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| For ESC K: m=75 |
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| For ESC L: m=76 |
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| For ESC Y: m=89 |
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| For ESC Z: m=90 |
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| n=0: Single density, 60 dpi |
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| n=1: Double density, 120 dpi |
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ML790/791 Printer Handbook | 95 |