Table of Contents
Advertisement
Print Head
Illustrated below is a side view of the print head
and an end view of the wire guide. The print head
has eight print wires arranged vertically 1 through
8,
from top to bottom. The character image dots
are made by the print wires as they strike the
ribbon.
The cir.:led area is a cross section of a print mag-
net. The print wire is attached to the armature.
When the coil is energized by the print wire driver,
the armature is driven forward against the print
wire guide, driving the print wire against the rib-
bon. The system pulses the print wire driver to
fire the print magnet. When the pulse ends and the
coil is de-energized, the return spring restores the
armature and print wire.
Print
Coil
Side View of
(1
of 8)
9-6
The copy control dial on the printer adjust the
distance form the print head to the platen to allow
for the thickness of the form. The dial is used by
the operator to optimize print quality.
~
"
\'\
\
\
\
\
\
\
\ \
\
\
\
\
Print wires
0
0
are numbered
0
0
0
0
0
0
0
0
•
•
•
•
•
1 through 8,
0
0
0
0
0
top to bottom.
0
0
o
0
0
0
0
0
0
0
0
0
0
0
0
0
0
End View of
Wire Guide
Solid dots denote portions
of characters printed by
print wire 3 as the
print head moves
from left to right.
Advertisement
Table of Contents
