Functional Description
Mechanical Functions
3-3
3.2
Mechanical Functions
3.2.1
Head/PlatenClearance
The worm gear (see principle drawing) determine the basic head distance. You can
imagine the worm gear as a mechanical memory. During initialisation (power up) of
the printer the head distance stepper moves the toothed segment on block at the
worm gear. Now the printer has its basic point and can count the steps forward which
are stored in the firmware. The stepper tolerance is within one bit pattern (equals
4 steps).
Principle
B
Me
a
n point
c
a
rri
a
ge
a
xle
Be
a
ring point
eccenter
WORM GEAR
"MEMORY"
Motor
pinion
1
3
teeth
S
tepper
Toothed wheel
8
4/14
Thoothed
s
egment
26°
B
A
Lever
Adj
us
t Are
a
:
Toler
a
nce
Toler
a
nce
A
min.
0
m
a
x.
He
a
d Di
s
t
a
nce
26°
B
A
Содержание 2365
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Страница 164: ...Option Recognition Spare Parts and Schematics 7 24 7 10 Option Recognition...
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