Wincor Nixdorf TH180, Programmer'S Manual

Page: 67 / 162

TH180 Programmer’s Guide
62
Commands related to bit images
ESC * m nL nH d1 ~ dk
[Designation] Select bit image mode
[Format] 1BH, 2AH, m, nL, nH, d1 ... dk
[Valid limits] m = 0, 1, 32, 33
0 nL 255
0 nH 3
0 d 255
[Initial value] Cancel
[Function] (1) Specifies the mode m bit image for the number of dots specified in nL and nH.
m
Mode Number of
vertical dots Vertical dot
density Horizontal dot
density Number of bytes
transferred
0
8-dot single
density 8 dots 203/3 DPI 203/3 DPI nL+nH×256
1
8-dot double
density 8 dots 203/3 203
32
24-dot single
density 24 dots 203 203/3 (nL+nH×256)×3
33
24-dot double
density 24 dots 203 203
(2) If parameter m is out of the valid range, nL and all subsequent data are
processed as ordinary data.
(3) The parameters nL and nH indicate the number of horizontal dots in an image
to be printed. Specifically: nL+nH×256
(4) If the bit image data entered exceeds the number of dots printable on one line,
the excessive data is skipped.
(5) The parameter d indicates the bit image data. In this data, a 1 bit corresponds
to a dot to be printed. A 0 bit corresponds to a dot not to be printed.
(6) If the print area width specified using the Set left margin command (GS L) or
Set printing area width command (GS W) is smaller than the minimum
horizontal width (2 dots for single density or 1 dot for double density) of the
bit image, the processing given below is executed for that line:
a. The print area is enlarged to the right until it is equivalent to the
minimum horizontal width of the bit image. The print area is enlarged
in the range where the print area width is not exceeded.
b. If the processing operation in a. above cannot allocate sufficient area, the
print area is enlarged to the left. (The left margin is reduced.)
(7) Once bit image processing is completed, ordinary data processing is
resumed.