Toshiba E-STUDIO520 - Entering to Admin Menu

3
March 2005 © TOSHIBA TEC e-STUDIO520/600/720/850 COPY PROCESS
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3.3 Comparison of Copy Process to e-STUDIO550/650/810
Process e-STUDIO550/650/810 e-STUDIO520/600/720/850
1. Photoconductive drum
• Sensitivity
• Surface potential
OD-6510 (OPC drum)
Highly sensitized drum
–700 V (grid voltage –733 V)
"
"
-490 V (-290 to -890 V)
Grid voltage -500 V (-300 to -900 V)
2. Charging Scolotron method (constant current)
Grid output variable
"
"
3. Surface potential controlling Surface potential sensor "
4. Writing
• Light source
• Light amount
Semiconductor laser
(adjustment not required)
3.8 nJ/mm²
"
3.9 nJ/mm² (e-STUDIO520/600/720)
3.0 nJ/mm² (e-STUDIO850)
5. Image density control Image quality sensor "
6. Development
• Magnetic roller
• Auto-toner
• Toner supply
• Toner-empty detection
• Toner
• Developer material
• Developer bias
Two magnetic rollers
Magnetic bridge-circuit method
Toner cartridge system
(There is a toner recycle system.)
Density detection system
T-6510/6510E/6510D
D-6510
DC-500V + AC
"
"
"
"
(There is a toner cartridge empty
detecting system by piezoelectric
type sensor.)
T-6000/T-6000E/T-6000D
D-6000
-394 V (-200 to -800 V) DC + AC
7. Transfer
• Transfer
• Power supply roller
Separation auxiliary roller
Transfer belt
Power supply roller
none
"
"
"
8. Separation Transfer belt charging
Separation finger applied
"
"
9. Discharging
• Discharging position
• Discharge lamp
• Pre-cleaning discharge
Discharge by exposure after cleaning
Discharge by red LED
None
"
"
"
10. Cleaning
• System
• Recovered toner
Blade + Brush
Reuse (by the toner recycle system)
"
"
11. Cleaning brush bias Varistor 430V "
12. Fusing
• System
• Cleaning
• Heater
Long-life heat roller system
Fuser roller: Fluoroplastic-coated
roller (ø60)
Pressure roller: PFA tube roller
(550/610:ø50, 810:ø60)
Cleaning web
(for fuser roller cleaning)
Pressure roller cleaning felt roller
Pressure roller cleaning metal roller
IH coil (Induction heating system)
ON/OFF control by thermistor
"
"
Pressure roller: PFA tube roller (ø60)
"
none
none
"
"