Toshiba E-Studio 5540c - Copy Process

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OUTLINE OF THE MACHINE
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3.4 Copy Process
Fig. 3-27
(1) Charging: Places a negative charge on the
surface of the photoconductive drum.
(6) 1st transfer: Transfers the visible image
(toner) on photoconductive drum to the
transfer belt.

(2) Original exposure: Converts images on the
original into optical signals.
(7) 2nd transfer: Transfers the visible image
(toner) on the transfer belt to paper.

(3) Data reading: The optical image signals are
read into CCD and converted into electrical
signals.
(8) Fusing: Fuses the toner image to the paper
by applying heat and pressure.

(4) Data writing: The electrical image signals
are changed to light signals (by laser
emission) which expose the surface of the
photoconductive drum.
(9) Blade cleaning: While scraping off the
residual toner from the drum by the blade.

(5) Development: Negatively-charged toner is
made to adhere to the photoconductive
drum, producing a visible image.
(10) (–) Discharging: Eliminates the residual (–)
charge from the surface of the
photoconductive drum.

CCD
Heater lamp
Carrier
Toner
(
-
)
Discharging
(
LED array
)
Cleaning
Paper exit
1st transfer
2nd transfer
Photocon-
ductive drum
Data reading (scanning)
Original exposure
Xenon lamp
Image processing
Data writing
Semiconductor laser
Magnetic roller bias
Black development
Charger (grid voltage)
Fusing
Bypass feeding
Drawer feeding
LCF / Tandem LCF feeding
8
7
2
3
4
1
9
6
5
10
IH coil