Printek Emulation
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 |
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| 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.
mDensity
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 |
104
