Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL
97.04.01
M-64
<Paper Stack Lowering/Drawer Lock>
z Paper Stack Lowering
D When the Paper Descent Key (UN5/6) is pressed or the drawer runs out of paper
during a copy cycle, the Lift-Up Motor (M13/14) is energized to turn backward.
D The rotation of the motor is transmitted via a gear train to the worm gear and Paper
Lifting Arm mounted on the same shaft, lowering them.
D When the Lower Limit Position Sensor (PC70/71) is blocked by the light blocking
plate of the worm gear, it deenergizes the Lift-Up Motor (M13/14). This completes
the paper stack lowering motion (at a paper-empty condition).
D When the Paper Descent Key (UN5/6) is pressed, the Lift-Up Motor is deenergized
when the Lower Limit Position Sensor (PC70/71) is unblocked after it has been
blocked. This unlocks the drawer. (For more details, see ”Drawer Locking Mecha-
nism” that follows.)
1st/2nd Drawer Lower Limit
Position Sensor PC70/71
Light Blocking Plate
1134M033EA
z Drawer Locking Mechanism
Drawer Guide Frame
Lock Lever
1134M034EA
D Pressing the Paper Descent Key (UN5/6) starts the
paper lowering motion.
D The worm gear is turned downward until its light
blocking plate has passed through and below the
Lower Limit Position Sensor (PC70/71), blocking
and then unblocking it. This is so the worm gear can
reach down low enough to push the Lock Lever
downward and unlock the drawer.
D When the drawer is unlocked, the Drawer Spring in
the rear of the drawer pushes the drawer out to the
front approx. 70 mm.
D Once the drawer is pushed out, the drawer Set Sen-
sor (PC61/62) is unblocked. This reverses the Lift-
up Motor (M13/14) and briefly turns the worm gear
upward until its light blocking plate reblocks the
Lower Limit Position Sensor (PC70/71), returning
the Lock Lever to the locking position.
D The Lock Lever on the bottom of the drawer con-
tacts the Drawer Guide Frame of the copier and
slides over the frame.
D The drawer is locked in the copier when the Lock Le-
ver drops into the slot in the Drawer Guide Frame.
1134M035ED
Drawer Spring
When Drawer is Slid in
When Drawer is
Unlocked
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