Canon imagePRESS 1135 Series Service Manual page 150

2
Technology > Pickup / Feed System > Pick-up Area Control/Function > Paper Level Detection
Lifter lower
position sensor
Deck driver PCB
Air pickup driver PCB
2 Technology > Pickup / Feed System > Pick-up Area Control/Function > Paper Level Detection
Storage level Storage level
sensor right sensor left
Encoder
Lifter motor
Storage level
sensor left
Lifter motor
Storage level
sensor right
PCB37
PCB36
Lifter control is executed constantly during pickup to keep the paper surface at appropriate
height.
Because of the inability to determine accurate remaining level when the lifter is moved down,
the height is calculated by subtracting the number of sheets that has actually been picked up
from the number of sheets before pickup.
The timing of turning on/off by the encoder differs between the storage level sensor right and
the storage level sensor left. This difference enables the judgment whether the lifter is moved
up or down.
Remaining level of the paper is displayed with the LED on the deck front cover.
For details, see Chapter 2, "LED Control." .
F-2-136
2-102
2-102