44292401TH Rev.1
23 /
Oki Data CONFIDENTIAL
COMPOSITION/OPERATION
COMPOSITION/OPERATION
5.
Overall composition
5.1
Control block diagram
A0VTT2C500AA
Print control board (PRCB)
MFP board (MFPB)
CPU
Control panel
Scanner
TC/Y
TC/M
TC/C
TC/K
Image processing
Power supply/
high voltage
Fusing
Image process
Paper pi ck-up/
transport
Write unit (PH )
Image bus line
Control system line
FAX
COMPOSITION/OPERATION
5.
Overall composition
5.1
Control block diagram
5.2
Image creation process
5.2
Image creation process
[1]
Printer image
processing
• The intensity of the laser light is controlled by the image signal sent
from the host computer.
[2]
Photo conductor
• The image projected onto the surface of the photo conductor is con-
verted to a corresponding electrostatic latent image.
[3]
Photo conductor
charging
• A negative DC charge layer is formed on the surface of the photo
conductor.
[4]
Laser exposure
• The surface of the photo conductor is irradiated with the laser light
and an electrostatic latent image is thereby formed.
[5]
Developing
• The toner, negatively charged in the Hopper, is attracted onto the
electrostatic latent image formed on the surface of the photo conduc-
tor. It is thereby changed to a visible, developed image.
• A DC negative bias voltage is applied to the Developing roller,
thereby preventing toner from sticking to the background image por-
tion.
[6]
1st image transfer
• A DC positive voltage is applied to the backside of the transfer belt,
thereby allowing the visible, developed image on the surface of the
photo conductor to be transferred onto the transfer belt.
[7]
2nd image transfer
• A DC positive voltage is applied to the backside of the media, thereby
allowing the visible, developed image on the surface of the transfer
belt to be transferred onto the media.
[
8
]
Media separation
• The media, which has undergone the 2nd image transfer process, is
neutralized.
[9]
Transfer belt cleaning
• A charge is applied to the transfer belt. By potential difference, resid-
ual toner on the surface of the transfer belt is collected for cleaning.
[10]
Photo conductor
cleaning
• The residual toner left on the surface of the photo conductor is
scraped off.
A00VT1C005AA
[1] Printer image processing
[2] Photo
conductor
[3] Photo conductor charging
[4] Laser exposure
[5] Developing
[6] 1st image transfer
[7] 2nd image transfer
[9] Transfer belt cleaning
[10] PC drum cleaning
[
8
] Media separation
Содержание MC160MFP
Страница 1: ...MC160MFP Maintenance Manual 011710A...
Страница 18: ...44292401TH Rev 1 17 Oki Data CONFIDENTIAL MC160n Main body THEORY OF OPERATION...
Страница 55: ...44292401TH Rev 1 54 Oki Data CONFIDENTIAL Auto Document Feeder Unit THEORY OF OPERARTION...
Страница 61: ...44292401TH Rev 1 60 Oki Data CONFIDENTIAL MC160n Main body FIELD SERVICE...
