Character Generation - Printronix

P9212 Maintenance Manual

Normal (retracted) State
Coils de–energized

Character Generation

Paper advances one dot row after each horizontal sweep of the shuttle. (See
Figure 2–6 and Figure 2–7.)
Dot
Row
1
2
3
4
5
Character
6
Row
7
8*
9**
10
11
12
1
2
2–6
Permanent Magnet
Coil
Coil
Hammer
Tip
Hammer
Spring
Figure 2–5. Hammer Spring Action
Direction of Shuttle Movement
Start
Space
1 Hammer
Print Span
The P9212 shuttle sweeps
through 1.5 character
positions at 10 cpi.
Figure 2–6. Standard Character Formation
Activated (released) State
Coils energized
Coil
Coil
1 Hammer
Print Span
Used for lowercase descender only.
*
Used for underline and lowercase
**
descender.
Principles of Operation
Paper
Advances
Paper
Feed
Paper
Advances