UBI EasyCoder 601 XP – Service Manual Ed. 1
39
Chapter 8 Print Unit
Read
y
Erro
r
Pow
er
EasyCoder 601 XP
Prin
t
3
6
8
9
.
7
Pau
se
Setu
p
Feed
Ente
r
2
1
0
C
5
4
F3
F4
F5
F1
F2
Shift
IMPORTANT PRINTHEAD AND RIBBON INFORMATION
The
us
e o
f an
y th
erm
al tr
ans
fer
rib
bon
s, o
the
r th
an t
hos
e s
upp
lie
d b
y U
BI, w
ill i
nva
lid
ate
the
pr
int
hea
d w
arr
ant
y.
UB
I th
erm
al tr
an
sfe
r rib
bo
ns a
re e
ng
ine
ere
d s
pe
cif
ica
lly fo
r th
is p
rin
the
ad
.
Th
e q
ua
lity
of
th
erm
al a
nd
th
erm
al tr
an
sfe
r m
ed
ia s
up
plie
s in
th
is p
rin
ter
is a
lso
of
gr
ea
t im
po
rta
nc
e
for
th
e q
ua
lity
of p
rin
tin
g b
ar c
od
es a
nd
a lo
ng
life
of th
e p
rin
the
ad
. U
BI h
as c
are
fully
ma
tch
ed
th
e
pa
pe
r w
e r
ec
om
me
nd
/pr
ovid
e t
o t
he
ne
ed
s o
f th
is p
rin
ter
. W
e t
he
ref
ore
str
on
gly
ad
vis
e o
f u
sin
g
on
ly U
BI r
ec
om
me
nd
ed
/pr
ovid
ed
su
pp
lies
to
en
sur
e a
hig
h q
ua
lity
pr
int
ing
.
TEA
R-O
FF
Chapter 8
8. Print Unit
8.1 Description
The print unit is partly integrated with the ribbon rewind unit (see
chapter 7.3) and the optional backing paper rewinder unit (see
chapter 9).
The main parts of the print unit are:
• The rubber-coated pressing roller drives the paper forward under
the printhead and provides the necessary counter-pressure.
• The stepper motor drives the pressing roller via one belt and the
ribbon return roller and the ribbon rewind unit via another. The
rewind roller is idle, unless a backing paper rewind kit is fitted, see
chapter 9.
• The tear-off edge makes it easier to tear off paper strip. It is also
used for peel-off operation.
• The label-stop sensor (LSS) controls the paper feed and checks
for out-of-paper conditions.
• The printhead produces the heat that melts the “ink” on the
transfer ribbon or blackens the direct thermal paper in patterns
that make up the letters, graphics, or bar codes.
• The headlift mechanism presses the printhead against the thermal
paper or transfer ribbon, or lifts the printhead to allow paper and
ribbon load.
Print Unit
Ribbon Rewind Unit
Backing Paper Rewind Unit
(option)