Canon imageRUNNER ADVANCE C5255, Руководство по обслуживанию, Страница: 75 / 1443

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Technology > Laser Exposure System > Various Controls > Laser scanner motor control
Technology > Laser Exposure System > Various Controls > Laser scanner motor control
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PD
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Y laser control signal
M laser control signal
C laser control signal
Bk laser control signal
Laser Scanner Unit 1
Laser Scanner Unit 2
DC Controller
(UN1)
Y Laser Driver
PCB
M Laser Driver
PCB
C Laser Driver
PCB
Bk Laser Driver
PCB
Y Laser
M Laser
C Laser
Bk Laser
F-2-54
■
Laser scanner motor control
● Purpose
This is to rotate the scanner mirror by the specified speed.
● Execution timing
At power-ON, per printing
● Execution time
Approx. 3s (at power-ON), approx. 1s (at printing)
● Control detail
1) DC Controller forcibly rotates the motors in the two Laser Scanner Units.
2) It detects the speed detection signal (FG1 to 2, BD_YM, BD_CBk) and compares the signal
with the standard signal in DC Controller and then, controls the acceleration signal (ACC1
to 2) and the deceleration signal (DEC1 to 2) to make the specified speed.