Printek FormsMaster 8000, Руководство программиста

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Printek Emulation
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amount of graphics data that you specify, because the printer will not leave graphics mode until it has
accepted the specified number of data bytes.
If “Data Bits” is set to “7” in the interface setup menu, beware of potential problems in graphics mode.
Since the MSB (most significant bit) will always be turned off, it will not be possible to fire the top
wire of the print head. Worse yet, the value of
n1 or n2 may be changed. For example, if n2 specifies
200 bytes of data, and its MSB is turned off, the printer will only expect 72 bytes of data. It will exit
graphics mode, and then try to print the remaining 128 bytes of graphics data as normal text characters.
The result will surely not be pretty. To avoid such problems, the use of an 8-bit I/O interface for
printing graphics is highly recommended.
The normal graphics modes allow every dot to be printed. High speed graphics will print twice as fast,
but will not allow consecutive dots to be printed.
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 _______
6 240 dpi
7 240 dpi high speed
8 180 dpi
9 180 dpi high speed
10 144 dpi
11 144 dpi high speed
12 120 dpi
13 120 dpi high speed
14 102.86 dpi
15 102.86 dpi high speed
16 90 dpi
17 90 dpi high speed
18 80 dpi
19 80 dpi high speed
20 72 dpi
21 72 dpi high speed
22 65.45 dpi
23 65.45 dpi high speed
24 60 dpi
25 60 dpi high speed
NOTE: Horizontal movement of the printer's print head is measured in intervals of 1/720 of an inch.
Every supported graphics density above is an integral multiple of this resolution. For example, at 60
dpi, dots may be printed every 12/720 of an inch.
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.