Character Generation - Printronix P9012 Maintenance Manual

Character Generation

Paper advances one dot row after each shuttle cycle, causing the dot matrix
to be filled as required to generate each character (Figure 2–6 and
Figure 2–7).
DOT
ROW
1
2
3
4
5
ONE
6
CHARACTER
7
ROW
8
9
10
11
12
1
2
*
**
NOTE: The P9012 shuttle sweeps through 1.5 character positions at 10 cpi.
Principles of Operation
DIRECTION OF SHUTTLE MOVEMENT
START
*
* *
SPACE
1 HAMMER
PRINT SPAN
USED FOR LOWERCASE DESCENDER ONLY
USED FOR UNDERLINE AND LOWERCASE DESCENDER
Figure 2–6. Standard Character Formation
PAPER
ADVANCES
PAPER
FEED
PAPER
ADVANCES
1 HAMMER
PRINT SPAN
2–7