Lexmark 248X ユーザーズマニュアル

ページ / 227
49 
Section 3: IBM Emulation Mode Printer Commands
Graphics Print Modes
Normal Density Bit Image Graphics
Use this command to print normal density bit images at 60 dots per inch (dpi) 
horizontally and 72 dpi vertically.
Usage Notes
• 
Ln
 and Hn identify the number of bytes in data.
To print less than 256 bytes:
— Hn is 0.
— Ln is the number of bytes you want to print.
To print more than 256 bytes:
— Divide the number of bytes you want to print by 256.
— The result is Hn.
— The remainder is Ln.
• 
data
 is the bit-mapped graphics information.
Each vertical dot column can have 8 rows of dots. To print bit image graphics, 
the printer uses either the first 8 (248x) or 20 (249x) wires of the printhead to 
map the eight bits of data. The following table shows how the print wires are 
mapped for the 249x printer: 
Format
ESC K
Ln
Hn
data
Decimal
27
75
Ln
Hn
data
Hex
1B
4B
Ln
Hn
data
Bit Number
Binary Value
Print Wires
7
128
1, 2 
If dots 7 and 6 print, wire 3 is also used
6
  64
4, 5
5
 
32
6, 7
If dots 5 and 4 print, wire 8 is also used.
4
 
16
9, 10
3
   8
11, 12
If dots 3 and 2 print, wire 13 is also used.