Brother HL- SERIES, Техническое справочное руководство, Страница: 230 / 392

Revision C 16/01/96
Chapter 5 " EPSON FX-850 " - 31
5.7. Graphics
Select image mode
Esc*mn1n2<image data> (27)(42)mn1n2....
<1Bh><2Ah>mn1n2....
Ÿ This command enables you to define and print a single line raster bit image on a single text
line at a selected horizontal resolution.
Ÿ n
1
and n
2
define the number of bytes that comprise the image.
Ÿ The image consists of 256*n
2
+n
1
bytes of data, each byte representing a single vertical column
of 4/30".
Ÿ m defines the horizontal resolution at which the image will be printed. m must be in the range
0 to 7. A value of 0 selects 60 dots per inch, 1 and 2 select 120 dots per inch, 3 selects 240
dots per inch, 4 selects 80 dots per inch, 5 selects 72 dots per inch, 6 selects 90 dots per inch
and 7 selects 144 dots per inch.
Ÿ Each byte represents a vertical column of eight dots, the most significant bit representing the
dot at the top. Simply set a bit to 1 if you want a dot to appear in that position, and to 0 if you
want white space to appear.
Ÿ Images are printed left to right.
Ÿ Images are printed at a horizontal resolution determined by your selection and at an
approximate vertical resolution of 72 dots per inch. The printer attempts to match your chosen
horizontal resolution as best it can using its 600 dpi resolution.
Ÿ You can only use this command in portrait orientation.
10 WIDTH “LPT1:”,255
20 LPRINT “*** ESC * m n1 n2 ***”
30 FOR M=0 TO 6
40 LPRINT “m=”;M
50 ‘* SELECT BIT IMAGE MODE *
60 LPRINT CHR$(27);”*”;CHR$(M);CHR$(240);CHR$(0);
70 FOR I=1 TO 8
80 N=2^I-1
90 FOR J=1 TO 30
100 LPRINT CHR$(N);
110 NEXT J:NEXT I:LPRINT
120 NEXT M:END
*** ESC * m n1 n2 ***
Sample 9