Ricoh B230 Training Program page 78

Laser Synchronization Detectors
Synch:
Y/C (End)
Synch:
Y/C
(Start)
Scanning start and end detection for each color.
Each board handles two colors.
•
To determine which color beam hits the board, the machine checks the
timing.
For magenta and black, the LSD at the rear detects the start of the main scan.
For yellow and cyan, the LSD at the front detects the start of the main scan.
With a detector at the start and at the end, it is possible to make sure that the number
of pulses for each color is the same. This reduces color registration errors in the main
scan direction.
To do this, the machine measures the number of clock pulses between start and end
detection.
If the number is not correct, the LD clock frequency is adjusted automatically.
If the board at the end position is defective, you must disable the detection
feature with SP2-186-1.
Synch:
K/M (Start)
Synch:
K/M (End)
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