Toshiba e-STUDIO556 Service Manual page 89

3.4 COPY PROCESS
3.4.1 General Description
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Discharging
(1) Charging:
Negatively charges the surface of the photoconductive drum.
(2) Original exposure:
Converts images on the original into optical signals.
(3) Scanning:
Converts image optical signals into electrical signals.
(4) Writing:
Converts image electrical signals into optical signals (laser emission) and exposes them to the
surface of the photoconductive drum.
(5) Development:
Makes the negatively-charged toner adhere to the photoconductive drum and forms a visible
image.
(6) Transfer:
Transfers the visible image on the photoconductive drum onto paper.
Separation:
Separates the paper from the drum together with the toner.
(7) Fusing:
Fuses the toner onto the paper by applying heat and pressure.
(8) Brush cleaning:
Cleans dirt and paper dust on the drum.
(9) Blade cleaning:
Forcibly removes the residual toner on the drum.
(10)Discharging:
Discharges any remaining negative charge on the drum.
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Original exposure
Xenon lamp
( 1 ) Charging ( grid voltage )
Discharge
LED array
Blade cleaning
Brush cleaning
Fusing
Fuser roller
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Fig. 3-32
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Scanning
CCD
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Toner
Transfer/Separation
Cleaning brush + Blade
e-STUDIO556/656/756/856/557/657/757/857
Image processing
Writing
Semiconductive laser
Carrier
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Development
Magnetic roller
Bypass feeding
Drawer feeding
LCF feeding
OUTLINE OF THE MACHINE
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