Laser Exposure
G133 6-18 SM
600 x 600
4bits
36,377 77 17 -
Thick 5 to
Thick 6
All 36,377 77 17 -
6.3.3 LASER SYNCHRONIZING DETECTORS
Overview
The machine has four laser synchronizing detector boards (LSD). There is one at each
corner of the laser optics-housing unit.
The four LSD boards detect the following:
[A]: Scanning end position for yellow and cyan
[B]: Scanning start position for yellow and cyan
[C]: Scanning end position for magenta and black
[D]: Scanning start position for magenta and black.
The machine recognizes each color from the time that they are detected.
Main Scan Start Detection
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. The arrow [E] indicates
the scanning direction.
Clock Frequency Adjustment
Each LSD ensures that the number of laser clock pulses in the main scan is constant. If the