Laser Emission Timing (Sos Signal - Minolta Di350 Service Manual

FrameMaker Ver.5.5E(PC) Di350 GENERAL, MECHANICAL/ELECTRICAL
98.12.18
1171SBM1202A

12-2. Laser Emission Timing (SOS Signal)

• The signal output from the Master Board triggers the firing of the laser. The laser beam
travels to the Polygon Mirror, lens, and SOS Mirror to eventually hit the SOS Sensor,
which generates an SOS signal.
• The SOS signal determines the laser emission timing for each line in the main scanning
direction.
Polygon Motor
(M10)
Polygon Mirror
f-θ Lens
PC Drum
D
A to B: LD activation
B to C: LD OFF
C to D: Laser beam exposure area according to the image data
Cylindrical Lens
SOS Mirror
C
M-24
Collimator Lens
Laser Diode Board
(PWB-B)
PC Drum
SOS Mirror
B
SOS Sensor
1167M024AD
SOS
Sensor
SOS Signal
A
1171M038AA