Description Of Operation - Toshiba e-STUDIO2330C Service Manual
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Also See for e-STUDIO2330C:
- Service handbook (512 pages) ,
- Management manual (226 pages) ,
- Copying manual (174 pages)
Table of Contents
4.2
Description of Operation
2
Original exposure
Xenon lamp
26 W
3
Data reading (scanning)
CCD
600dpi, 7450 pixels
Image processing
5
Black development
Magnetic roller bias
- 400V (- 200 to -900V ) DC
1100V / 7.5 to 10kHz AC
4
Data writing
Semiconductor laser
Pw=3.5 nJ/mm
2
(1) Charging: Places a negative charge on the
surface of the photoconductive drum.
(2) Original exposure: Converts images on the
original into optical signals.
(3) Data reading: The optical image signals are
read into CCD and converted into electrical
signals.
(4) Data writing: The electrical image signals
are changed to light signals (by laser
emission) which expose the surface of the
photoconductive drum.
(5) Development: Negatively-charged toner is
made to adhere to the photoconductive
drum, producing a visible image.
© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
8
Paper exit
6
1st transfer
1400V ( 400 to 6000V )
Toner
Carrier
Photocon-
ductive drum
1
Charger (grid voltage)
-600V ( 250 to -1200V )
Fig. 4-3
(6)
↓
(7)
↓
(8)
↓
(9)
↓
(10) Blade cleaning: While scraping off the
↓
(11)
4 - 3
Fusing
Hearter lamps
e-STUDIO2330C/2820C/2830C/3520C/3530C:
e-STUDIO4520C:
NAD
600W x 2 + 280W x 1
NAD
MJD/AUD 600W x 2 + 350W x 1
MJD/AUD 600W x 2 + 280W x 2 + 350W x 1
7
2nd transfer
( + ) 1350V ( +2000 to -6400V )
(-) - 1150V
( + ) Discharging ( Recovery blade )
9
-875 V
10
Cleaning
( - ) Discharging ( LED array )
11
Wavelength 660nm x 18pcs.
1st transfer: Transfers the visible image
(toner) on photoconductive drum to the
transfer belt.
↓
2nd transfer: Transfers the visible image
(toner) on the transfer belt to paper.
↓
Fusing: Fuses the toner image to the paper
by applying heat and pressure.
↓
(+) Discharging: The conductive recovery
blade eliminates the (+) charges on the
photoconductive drum applied during the
transfer stage.
↓
residual toner from the drum by the blade.
↓
(–) Discharging: Eliminates the residual (–)
charge from the surface of the
photoconductive drum.
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
600W x 2 + 280W x 2
Bypass feeding
Drawer feeding
PFP/LCF feeding
COPY PROCESS
4
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