Lexmark FORMS 249X Technical Reference page 132

Creating the Character Data
Each dot-column is sent to the printer as three bytes of data. To get the values of
this data, convert the binary values to hexadecimal values.
First byte of data (most significant byte)
Second byte of data
Third byte of data (least significant byte)
The two-sixteenth character shows the hexadecimal value for each byte in each
column of the character. For example, the last byte of column one is binary 0000
1010 or 10, x0A. The character data is shown in the example below.
Initializing the Download Data
Use the following command to initialize the download area:
<x
1B3D - download command prefix - initialize download area
0000 - byte count (low byte first) - 0
>
132
Section 7: Downloading Characters and Fonts
Top 8 print wires
Center 8 print wires
Bottom 8 print wires