Laser Synchronizing Detector - Ricoh G-P3 Service Manual

OHP/Thick

Laser Synchronizing Detector

Overview
The machine has four laser synchronizing detector boards (LSD) as shown above. Each pair of boards
detects two colors. The machine knows each color from the time that they are detected. The two LSDs [A]
[B] are used for magenta and black, and the two [C] [D] are used for yellow and cyan.
Main Scan Start Detection
For magenta and black, the LSD [B] detects the start of the main scan. For yellow and cyan, the LSD [C]
detects the start of the main scan. The arrows [E] [F] show the direction of the laser scan.
600 x 600
1,200 x 600
1,200 x 1,200
42993 91
Laser Exposure
15
6
369