Brother International HS-5300 Service Manual - Page 50

platen, Platen, ground, spring

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2.8 Heated Platen • M-platen Two heaters are attached to the back of the M-platen to fix the ink onto the paper. The upstream side from the upper PA roller is called a Pre-heating area and the area from the upper PA roller towards the head is called the main heating area. Temperatures of these two areas are controlled individually. To hold the paper in close contact with the platen, the platen has a spring plate to hold down the paper, the pre-heating area has a pre-baffle and the main heating area has a baffle. • Q-platen The Q-platen solidifies and fixes the ink onto the paper. This platen is prepared to rapidly cool the paper to improve the ink transparency on OHPs. The pressure to hold the paper or OHP stay in close contact with the platen is produced by the Qplaten support spring. M-platen \ Air duct )x. Platen ground spring Fig. 2.27 Q-platen • Functions (1) As a chute for paper transportation. (2) Heats paper to fix the ink onto the paper. (3) Changes the temperature for OHP. (The media sensor detects the OHP.) Melts the ink again on the M-platen and rapidly cools it on the Q-platen to improve the ink transparency. (4) An air duct makes an air suction passage for the fan. Paper is pulled between the M-platen and the Q-platen to improve the paper contact with the platen and prevent paper from floating. 11-31

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2.8
Heated
Platen
•
M
-platen
Two
heaters
are
attached
to
the
back
of
the
M
-platen
to
fix
the
ink
onto
the
paper.
The
upstream
side
from
the
upper
PA
roller
is
called
a
Pre
-heating
area
and
the
area
from
the
upper
PA
roller
towards
the
head
is
called
the
main
heating
area.
Temperatures
of
these
two
areas
are
controlled
individually.
To
hold
the
paper
in
close
contact
with
the
platen,
the
platen
has
a
spring
plate
to
hold
down
the
paper,
the
pre
-heating
area
has
a
pre
-baffle
and
the
main
heating
area
has
a
baffle.
•
Q
-platen
The
Q
-platen
solidifies
and
fixes
the
ink
onto
the
paper.
This
platen
is
prepared
to
rapidly
cool
the
paper
to
improve
the
ink
transparency
on
OHPs.
The
pressure
to
hold
the
paper
or
OHP
stay
in
close
contact
with
the
platen
is
produced
by
the
Q
-
platen
support
spring.
M
-platen
\
Q
-platen
Air
duct
)x.
Platen
ground
spring
Fig.
2.27
•
Functions
(1)
As
a
chute
for
paper
transportation.
(2)
Heats
paper
to
fix
the
ink
onto
the
paper.
(
3
)
Changes
the
temperature
for
OHP.
(The
media
sensor
detects
the
OHP.)
Melts
the
ink
again
on
the
M
-platen
and
rapidly
cools
it
on
the
Q
-platen
to
improve
the
ink
transparency.
(4)
An
air
duct
makes
an
air
suction
passage
for
the
fan.
Paper
is
pulled
between
the
M
-platen
and
the
Q
-platen
to
improve
the
paper
contact
with
the
platen
and
prevent
paper
from
floating.
11-31