Operation; Outline - Konica Minolta magicolor 8650 Service Manual

Theory of Operation Ver. 2.0 Nov. 2007
7.2

Operation

7.2.1

Outline

• 4 units of the printer head are used for exposure process.
• The surface of the photo conductor is irradiated with a laser light and an electrostatic
latent image is thereby formed.
• The polygon mirror, which has only four faces, uses two-beam array LD to inhibit its rota-
tion speed from increasing due to the fewer number of faces.
• The two-beam array LD consists of two LD elements arranged vertically. Two lines are
scanned with two laser beams emitted from these two LD elements through a single face
of the polygon mirror.
Transfer belt
PC drum Y
Beam A
Beam B
PC drum
Direction
of rotation
of the PC
drum
G2 lens
Return mirror 2
Y M
LD/Y LD/M
Laser diode
Beam A
Beam B
Polygon
mirror
G1 lens
Return mirror 1
7. Write section (PH section)
C K
2nd image transfer roller
LD/C LD/K
Surface of the PC drum
Two lines
One scan
Direction of
rotation of
the PC drum
9J06T2E703AB
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