Canon imagePRESS 1110, Service Manual

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Technology > Pickup / Feed System > Pick-up Area Control/Function > Paper Surface Control
Technology > Pickup / Feed System > Pick-up Area Control/Function > Paper Surface Control
LED
Timing to
activate
Timing to
flash
Timing to turn
off the light
Timing to switch
Remaining
level LED
(Green)
When
paper
reaches the
specified
remaining
level
- Anytime
except when
the light is
activated
Activation →
Extinction
When the deck is open,
when shifting to sleep state
Extinction →
Activation
When the deck is closed
and the paper surface is
detected after the lifter
movement, when recovering
from sleep state
Open
button
(green)
When the
deck is
open
During lifter
movement
when the
deck is open
Anytime
except when
the light is
activated or
flashing
Flashing →
Extinction
When the lifter completes
moving up to the pickup
position
Flashing →
Activation
When the deck is open
while the lifter is moving
Activation →
Extinction
When shifting to sleep state
while the deck is open
Activation →
Flashing
When the lifter is moved
once the deck is closed
Extinction →
Flashing
When the lifter is moved
down once the open button
is pressed
Extinction →
Activation
When the deck is open
once the deck is stopped
Paper
supply
LED
(orange)
- When
the job is
interrupted
because
of low
remaining
paper level
Anytime
except when
the light is
flashing
Flashing →
Extinction
When paper is supplied,
when job is cancelled
Extinction →
Flashing
When job is interrupted due
to lack of remaining paper
Lock LED
(orange)
During
pickup,
during
preparation
to pick up
- Anytime
except when
the light is
activated
Activation →
Extinction
When pickup preparation
(floatation movement)
is completed, when the
printer engine is stopped
(e.g. abnormal completion,
shifting to sleep state).
Extinction →
Activation
Preparation to activate
for pickup (floatation
movement) is started
In the case that the foreign particle sensor detects foreign matter in the compartment, the lock
LED, the remaining level LED and the paper supply LED flash at a 500 msec cycle.
Paper can be supplied when in save-energy mode although all LEDs are turned off.
T-2-82
■
Paper Surface Control
This machine moves the lifter up and down to keep the paper surface at specified height for
smooth pickup.
The up/down movement of the lifter is controlled according to the detection result on the
paper surface.
Detecting the paper surface at 2 locations (paper's lead edge and the trail edge) improves
accuracy and enables high speed feeding.
Paper surface detection at paper's lead edge
Three paper surface sensors detect the height of the paper surface at the lead edge.
Detection timing:
• When the lifter is moved up at power ON or after the deck is closed
• When preparing pickup
• During pickup
• When pickup is complete
Paper surface detection at paper's trail edge
Two trailing edge sensors detect the height of the paper surface at the trail edge.
This function is used accessorily when the paper height cannot be detected at the leading
edge in a case in which the sheet is stuck onto the suction belt, etc.
Detection timing:
• When the lifter is moved up after the deck is closed
• During pickup