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Process/Operation > Laser Exposure System > Various Controls > Vertical Scanning Synchronous Control
Process/Operation > Laser Exposure System > Various Controls > Vertical Scanning Synchronous Control
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Vertical Scanning Synchronous Control
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Purpose
This is to align the writing start position in vertical scanning direction.
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Execution timing
Per color, Per printing
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Control detail
1) When the DC controller receives a print command, it creates the vertical synchronous
signal (/TOP) based on the inner timer and sends the signal to the main controller.
2) After receiving /TOP signal, the main controller counts the horizontal scanning synchronous
signal (/BD0) and outputs the video signal for 1 page of each color (DATA_Y, DATA_
M, DATA_C, DATA_K) to the DC controller in the specified number of times of horizontal
scanning.
As a result, the laser driver of each color emits the laser beam from the specified position for
1 page.
NOTE :
If the process speed is decelerated due to the print mode, interval of TOP signal in
continuous printing gets longer according to the slowdown level.
[1]
[2]
DA
TA_K,/DA
TA_K
DA
TA_C,/DA
TA_C
DA
TA_M,/DA
TA_M
DA
TA_Y
,/DA
TA_Y
/BOD
/T
OP
Main Controller
DC Controller
Video signal
Print command
[1]
C/Bk Laser Driver
[2]
Y/M Laser Driver
F-2-51