Printronix P9000 Series - Manual (Page 316)

Appendix E-4
Examples
The following examples illustrate the process of creating three characters: one with no attribĆ
utes, one with descenders, and one with extenders.
NOTE: If adjacent dots are used to create the character, the printer will set an adjacent
dot flag, and any line containing the character may print at half the normal speed. Half
speed may also result if a dot is placed in the first or last dot column of the character cell.
Example 1: Characters with No Attributes
NOTE: This example illustrates how OCR characters could be produced using the
downloading feature should an OCR reader fail to read standard OCR printed characĆ
ters.
1 3 4 5 6 7 8 9 10 11 12 2
LSB
1
2
3
4
5
6
7
8
9
F
0
7
6
5
4
3
2
1
0
Selected Print Mode and Pitch: OCR-B 10 cpi
OCR-B 10 cpi with no attributes = 12 Columns x 14 bits per column (Table E-2)
BIT #
COLUMN #
ROW #
LSB
MSB
10
11
12
13
14
F F F
F
F
F
F
F
F
F
F
F
F
F
F
F F F F F
F
F
F
F
F
F
5
4
3
2
1
Value Column
1
2
3
4
5
6
7
8
9
10
11
12
0000
0F00
1080
2041
2046
2048
2030
10E0
0F00
0000
0000
0000
Adjacent dots in rows 1 and 8 may result in half-speed printing of those dot rows.
Figure E-1. Characters with no Attributes Layout