Brother HL-1050 Technical Reference Manual page 310

Print single-density image
EscKn n <image data>
1 2
 This command enables you to define and print a single line raster bit image on a single text line.
 n and n define the number of bytes that comprise the image.
1 2
 The image consists of 256*n
 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.
 Images are printed from left to right.
 Images are printed at a horizontal resolution of 60 dots per inch and at an approximate vertical resolution of
72 dots per inch.
 You can only use this command in portrait orientation.
10 WIDTH "LPT1:", 255
20 LPRINT "*** ESC K n1 n2 ***"
30 FOR I=1 TO 5
40 '* STANDARD DENSITY BIT IMAGE MODE *
50 LPRINT CHR$(27);"K";CHR$(160);CHR$(0);
60 FOR J=1 TO 8
70 FOR K=1 TO 20
80 N=2^J-1
90 LPRINT CHR$(N);
100 NEXT K
110 NEXT J
120 LPRINT
130 NEXT I:END
*** ESC K n1 n2 ***
Sample 11
Print double-density image
EscLn n <image data>
1 2
 This command enables you to define and print a single line raster bit image on a single text line.
 n
and n define the number of bytes that comprise the image.
1 2
 The image consists of 256*n
 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.
 Images are printed from left to right.
 Images are printed at an approximate horizontal resolution of 120 dots per inch and at an approximate
vertical resolution of 72 dots per inch.
 You can only use this command in portrait orientation.
10 WIDTH "LPT1:",255
20 LPRINT "*** ESC L n1 n2 ***
30 FOR I=1 TO 5
40 '* DOUBLE-DENSITY BIT IMAGE MODE *
50 LPRINT CHR$(27);"L";CHR$(160);CHR$(0);
60 FOR J=1 TO 8
70 FOR K=1 TO 20
80 N=2^J-1
90 LPRINT CHR$(N);
100 NEXT K
110 NEXT J
120 LPRINT
130 NEXT I:END
*** ESC L n1 n2 ***
Sample 12
(27)(75)n1n2....
+n bytes of data, each byte representing a single vertical column of 4/30".
2 1
(27)(76)n1n2....
+n bytes of data, each byte representing a single vertical column of 4/30".
2 1
CHAPTER 6 EPSON - 26
<1Bh><4Bh>n1n2....
<1Bh><4Ch>n1n2....