Comparison Of Copy Process To E-Studio555/655/755/855 - Toshiba e-STUDIO556 Service Manual

3.5

Comparison of Copy Process to e-STUDIO555/655/755/855

Process
1. Photoconductive drum
• Sensitivity
• Surface potential
2. Charging
3. Surface potential controlling
4. Writing
• Light source
5. Image density control
6. Development
• Magnetic roller
• Auto-toner
• Toner supply
• Toner-empty detection
• Toner
• Developer material
• Developer bias
7. Transfer
• Transfer
• Power supply roller
Separation auxiliary roller
8. Separation
9. Discharging
• Discharging position
• Discharge lamp
• Pre-cleaning discharge
10. Cleaning
• System
• Recovered toner
11. Cleaning brush bias
12. Fusing
• System
• Cleaning
• Heater
e-STUDIO556/656/756/856(Ver03)
OUTLINE OF THE MACHINE
e-STUDIO555/655/755/855
OD-6510 (OPC drum)
Highly sensitized drum
-490 V (-290 to -890 V)
Grid voltage -500 V (-300 to -900 V)
Scolotron method (constant current)
Grid output variable
Surface potential sensor
Semiconductor laser
Image quality sensor
Two magnetic rollers
Magnetic bridge-circuit method
Toner cartridge system
(There is a toner recycle system.)
Density detection system
(There is a toner cartridge empty
detecting system by piezoelectric
type sensor.)
PS-ZT8550/PS-ZT8550E/
PS-ZT6000D/PS-ZT6000C
PS-ZD6000
-394 V (-200 to -800 V) DC + AC
Transfer belt
Power supply roller
none
Transfer belt charging
Separation finger applied
Discharge by exposure after cleaning
Discharge by red LED
None
Blade + Brush
Reuse (by the toner recycle system)
Varistor 430V
Long-life heat roller system
Fuser roller: Fluoroplastic-coated
roller (ø60)
Pressure roller: PFA tube roller (ø60)
Cleaning web
(for fuser roller cleaning)
IH coil (Induction heating system)
ON/OFF control by thermistor
3 - 38
e-STUDIO556/656/756/856
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PS-ZT8560/PS-ZT8560E/
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