Olivetti d-Color MF4003 Service Manual page 581

d-Color MF4003/MF3303
[1]
[1] DF original reading position
1.4 WRITE SECTION
1.4.1 Configuration
[6]
[1] SOS sensor
[3] SOS mirrors
[5] G1 lens
1.4.2 Operation
(1) Overview
• A semiconductor laser is provided for each of four different colors. A single polygon motor is used to make a scan.
• Each photoconductor is irradiated with a laser light so that an electrostatic latent image is formed on it.
• All the four colors of photoconductors are irradiated with each laser light simultaneously, which removes minus electric charge remaining
on the surface of photoconductors.
(2) Laser exposure process
1. The laser light of each color enters the cylindrical lens via the synthetic mirror and return mirror.
2. At the cylindrical lens, each laser light is condensed in the vicinity of the polygon mirror.
3. Since the angle of incidence for each color of laser light varies, the laser light reflected by the polygon mirror is reflected in a different
angle for each color.
4. The condensing angle of each color of laser light is corrected by the G1 lens and then reaches each return mirror.
5. The K laser light is condensed on the photoconductor surface via the G2 lens and return mirror/1. The Y laser light is condensed on the
photoconductor surface via the return mirror/1, G2 lens, and return mirror/2. The M laser light is condensed on the photoconductor
surface via the return mirror/1, G2 lens, and return mirror/2. The C laser light is condensed on the photoconductor surface via the return
mirror/1, G2 lens, return mirror2, and return mirror/3.
Y119930-3
[3]
[1]
[2]
[5]
P THEORY OF OPERATION > 1. d-Color MF4003/MF3303
[2]
[2] Original cover reading position
[4]
[2] SOS lens
[4] Return mirror
[6] Polygon motor (M7)
P-7
Service Manual