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Printek Emulation
104
Example: The following escape sequence will print four bytes of graphics data at 72 x 72 dpi. The resulting
figure will resemble a square, since the horizontal and vertical density are the same. If some other density is
chosen, the figure will resemble a rectangle.
Escape Sequence: ESC * 20 0 4 < < < <
Hexadecimal: 1B 2A 14 00 04 3C 3C 3C 3C
m DPI Graphics ESC # m n1 n2 data
Selects eight wire graphics of density m as listed in the following table for (n1 x 256) + n2 columns of data.
m Density
90 90 dpi
100 100 dpi
135 135 dpi
150 150 dpi
NOTE: Horizontal movement of the printer's print head is measured in intervals of 1/720 of an inch. The
supported graphics densities above may not be an integral multiple of this resolution. For example, at 150
dpi, dots may be printed every 4.8/720 of an inch. The printer is not really capable of printing dots every
4.8/720 of an inch. It will print the dots as accurately as possible, with some at 4/720 of an inch and some at
5/720 of an inch. The overall average will be 4.8/720 of an inch.
Example: The following escape sequence will print five bytes of graphics data at 150 dpi. The resulting
figure will resemble a backslash character, “\”.
Escape Sequence: ESC # 150 0 5 64 32 16 8 4
Hexadecimal: 1B 23 96 00 05 40 20 10 08 04
Printer Controls
Bell BEL
Causes the printer's bell to sound.
Control code: BEL
Hexadecimal: 07
Unidirectional Mode ESC U n
Selects unidirectional mode for n=1, or bidirectional mode for n=0. Printing is normally bidirectional.
Unidirectional printing provides more accurate positioning, but causes lower throughput.
Example: The following escape sequence will force unidirectional printing.
Escape Sequence: ESC U 1
Hexadecimal: 1B 55 31