Brother International HS-5300 Service Manual - Page 43

mechanical

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(3) Press contacting mechanism When the carriage moves to the maintenance position, it moves the lever to drive the press contacting link. By driving the press contacting link, the press contacting plate moves up and down. (4) Drive gear train The drive gear train installed on the maintenance unit frame transmits the power of the PA motor to the winding core and the pumping mechanism through the paper delivery roller. The drive gear train is turned ON and OFF by the press contacting link position of the press contacting mechanism moved by the carriage. (5) Pumping mechanism Two pistons in the syringe are controlled by the disc cam to feed air to the tube. It is constructed to prevent negative pressure from being produced. (6) Capping mechanism The capping mechanism supports a capping block with a rubber seal using a spring plate. When the head unit moves to the right end position, it is connected to a hole made in the ink tank. An air tube from the pumping mechanism is connected to the block and pressure is applied to the ink tank through the hole made in the rubber cap. (7) Maintenance paper empty sensor If the special roll paper runs out or the maintenance cartridge is not installed, the maintenance paper empty sensor detects it. (8) Maintenance paper level gauge The maintenance paper level gauge is installed at the right shoulder position of the 1st sheet feeder (right above the maintenance cartridge) and detects the change of diameter of the winding core using a mechanical link and mechanically indicates the amount of the remaining special roll paper. 11-24

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(
3
)
Press
contacting
mechanism
When
the
carriage
moves
to
the
maintenance
position,
it
moves
the
lever
to
drive
the
press
contacting
link.
By
driving
the
press
contacting
link,
the
press
contacting
plate
moves
up
and
down.
(4)
Drive
gear
train
The
drive
gear
train
installed
on
the
maintenance
unit
frame
transmits
the
power
of
the
PA
motor
to
the
winding
core
and
the
pumping
mechanism
through
the
paper
delivery
roller.
The
drive
gear
train
is
turned
ON
and
OFF
by
the
press
contacting
link
position
of
the
press
contacting
mechanism
moved
by
the
carriage.
(
5
)
Pumping
mechanism
Two
pistons
in
the
syringe
are
controlled
by
the
disc
cam
to
feed
air
to
the
tube.
It
is
constructed
to
prevent
negative
pressure
from
being
produced.
(6)
Capping
mechanism
The
capping
mechanism
supports
a
capping
block
with
a
rubber
seal
using
a
spring
plate.
When
the
head
unit
moves
to
the
right
end
position,
it
is
connected
to
a
hole
made
in
the
ink
tank.
An
air
tube
from
the
pumping
mechanism
is
connected
to
the
block
and
pressure
is
applied
to
the
ink
tank
through
the
hole
made
in
the
rubber
cap.
(
7
)
Maintenance
paper
empty
sensor
If
the
special
roll
paper
runs
out
or
the
maintenance
cartridge
is
not
installed,
the
maintenance
paper
empty
sensor
detects
it.
(8)
Maintenance
paper
level
gauge
The
maintenance
paper
level
gauge
is
installed
at
the
right
shoulder
position
of
the
1st
sheet
feeder
(right
above
the
maintenance
cartridge)
and
detects
the
change
of
diameter
of
the
winding
core
using
a
mechanical
link
and
mechanically
indicates
the
amount
of
the
remaining
special
roll
paper.
11-24