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TM200 Service Manual
- 20 -
Printer Mec
hanism
Thermal head Module
T
he the
r
mal
head
is d
e
sig
ned
so it
s heat
i
ng
el
em
e
n
t i
s
posi
ti
oned
wher
e it
comes i
nto
cont
act
wi
th t
he p
l
at
en. T
he r
o
ll
pa
per
wrap
ped
ar
ound
th
e pl
ate
n
is k
e
pt
in
cont
act
wit
h
the
ther
m
a
l
hea
d
’
s heat
i
ng
el
em
e
n
t at
a p
r
escr
ibed
pr
essure,
and
pr
int
i
ng
is
p
e
rfor
med whe
n
heat is
g
enera
t
ed
b
y
the
heat
i
ng
element
.
P
r
i
n
ti
ng
is
p
e
rf
orm
e
d
a
cc
o
rd
in
g
t
o
th
e
fo
ll
ow
i
n
g st
e
p
s:
1.
T
he pr
int
sig
n
al
send
s a
pr
escri
b
e
d
ene
rgi
zi
ng p
u
lse
to t
he el
ect
rod
e
s tha
t
co
rr
espond
to
ea
ch d
o
t t
o be pr
int
e
d
.
2.
Resist
ors a
t
ea
ch el
ectro
d
e
gener
at
e heat
.
3.
T
he heat ener
gy g
ener
ated
by t
he resisto
r
s i
s
tr
ansmit
ted to the r
o
ll
p
a
per
sur
f
a
ce
t
h
rou
g
h
t
he pr
ot
ecti
v
e
lay
e
r t
o
t
he pa
per
’
s he
at-sensi
t
i
v
e
lay
e
r, c
ausi
n
g co
lor
a
ti
on
o
f
the p
a
p
e
r.
F
i
g
u
re 2
.2 F
r
ame cove
r open
Th
e
p
a
p
e
r o
u
t
l
e
t o
f
th
e
p
r
i
n
te
r
is c
overe
d
,
an
d
ev
e
n
if p
a
p
e
r o
u
t
pu
t be
c
o
m
e
s bl
o
c
ke
d
f
o
r
so
m
e
r
e
ason,
ther
e i
s
en
ough
ro
om in
t
he sp
ace
b
e
t
w
een the
pl
aten
and
fr
ame cov
e
r
for
acc
u
mula
ti
on
of t
w
o o
r
t
h
ree n
o
rmal
le
ngth
recei
pt
s (the
leng
th o
f
one sheet
is a
ssum
e
d
t
o
be 80mm or le
ss
).
T
h
is r
e
d
u
ces the
chance
of rece
ip
t p
a
per
b
e
coming
b
e
nt an
d
of t
he
p
r
i
n
t p
i
t
ch becomin
g
unev
en.
Pa
per
tha
t
ac
cumula
tes c
a
n be easi
ly
pul
l
ed
ou
t of t
he
p
r
i
n
ter
afte
r t
he pa
per
outlet
is o
p
ened
.