Oki MC160MFP Maintenance Manual page 28

Oki Data CONFIDENTIAL
8.
8. Write section (PH section) Write section (PH section)
8.1 Composition
8.1 Composition
SOS mirror
G2 lens
G1 Lens
Polygon mirror
44292401TH Rev.1
A034T2C574AA
Return mirror
SOS sensor
Semiconductor laser
A034T2C504AA
8.2 8.2 8.2 Operation Operation Operation
8.2 Operation
8.2.1 8.2.1 8.2.1 Outline Outline Outline
8.2 Operation
8.2.1 Outline
• The surface of the photo conductor is irradiated with a laser light and an electrostatic • The surface of the photo conductor is irradiated with a laser light and an electrostatic
8.2.1 • The surface of the photo conductor is irradiated with a laser light and an electrostatic Outline
latent image is thereby formed. latent image is thereby formed.
latent image is thereby formed.
• The surface of the photo conductor is irradiated with a laser light and an electrostatic
• The polygon mirror has four faces. The machine uses a two-beam array LD to inhibit the • The polygon mirror has four faces. The machine uses a two-beam array LD to inhibit the
• The polygon mirror has four faces. The machine uses a two-beam array LD to inhibit the
latent image is thereby formed.
speed of the polygon mirror from increasing because of the decreased number of faces speed of the polygon mirror from increasing because of the decreased number of faces
speed of the polygon mirror from increasing because of the decreased number of faces
• The polygon mirror has four faces. The machine uses a two-beam array LD to inhibit the
the polygon mirror has as compared with the conventional models. the polygon mirror has as compared with the conventional models.
the polygon mirror has as compared with the conventional models.
speed of the polygon mirror from increasing because of the decreased number of faces
• The two-beam array LD consists of two LD elements arranged vertically. Two lines are • The two-beam array LD consists of two LD elements arranged vertically. Two lines are
• The two-beam array LD consists of two LD elements arranged vertically. Two lines are
the polygon mirror has as compared with the conventional models.
scanned with two laser beams emitted from these two LD elements through a single face scanned with two laser beams emitted from these two LD elements through a single face
scanned with two laser beams emitted from these two LD elements through a single face
• The two-beam array LD consists of two LD elements arranged vertically. Two lines are
of the polygon mirror. of the polygon mirror.
of the polygon mirror.
scanned with two laser beams emitted from these two LD elements through a single face
of the polygon mirror.
Beam A Beam A
Beam B
Beam B Beam B
Beam A
Beam A Beam A
Beam B
Beam A
Beam B Photo
Beam B Beam B Photo Photo
conductor
conductor conductor Photo
Beam B
Direction of rotation
conductor
Direction of rotation Direction of rotation
of photo conductor
of photo conductor of photo conductor Direction of rotation
of photo conductor
Laser diode
Laser diode Laser diode
G1 lens G2 lens
Laser diode
G1 lens G1 lens
G2 lens G2 lens
G1 lens G2 lens
Return mirror
Polygon mirror
Return mirror Return mirror
Polygon mirror Polygon mirror
Return mirror
Polygon mirror
8.2.2 Laser exposure process
8.2.2 8.2.2 Laser exposure process Laser exposure process
8.2.2 Laser exposure process
8.2.2 1. The laser light emitted from the Semiconductor laser strikes the polygon mirror. Laser exposure process
1. The laser light emitted from the Semiconductor laser strikes the polygon mirror. 1. The laser light emitted from the Semiconductor laser strikes the polygon mirror. 2. The polygon mirror with four faces is rotated at high speeds by the polygon motor.
1. The laser light emitted from the Semiconductor laser strikes the polygon mirror.
2. The polygon mirror with four faces is rotated at high speeds by the polygon motor. 2. The polygon mirror with four faces is rotated at high speeds by the polygon motor. 3. The SOS sensor ensures that the laser light emission start timing remains constant
2. The polygon mirror with four faces is rotated at high speeds by the polygon motor.
for each line of main scan.
3. The SOS sensor ensures that the laser light emission start timing remains constant 3. The SOS sensor ensures that the laser light emission start timing remains constant
3. The SOS sensor ensures that the laser light emission start timing remains constant
for each line of main scan. for each line of main scan.
for each line of main scan.
Photo conductor
Photo conductor
Photo conductor Photo conductor
Return mirror
Return mirror
SOS mirror
Return mirror Return mirror
SOS mirror
SOS mirror SOS mirror G2 Lens
G1 Lens
G2 Lens
G2 Lens G2 Lens
G1 Lens
G1 Lens G1 Lens
COMPOSITION/OPERATION
Photo conductor surface Photo conductor surface Photo conductor surface
Photo conductor surface
Beam A
Beam A
A034T2E582AA
A034T2E582AA A034T2E582AA
A034T2E582AA
SOS sensor
SOS sensor
SOS sensor SOS sensor
Semiconductor laser
Semiconductor laser
Semiconductor laser Semiconductor laser
Polygon mirror
Polygon mirror
Polygon mirror Polygon mirror
A034T2C505AA
A034T2C505AA
A034T2C505AA A034T2C505AA
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