Annual CAMP Technical Meeting, Canandaigua, NY, 5/12, 2005. (CAMP --- Center for Advanced Materials Processing)

2. Corona Phenomenon
Corotron Description
Electrical Potential Distribution
Charge Density Distribution
Flow Field Results
Conclusions

3. Lateral view
Side view

5. Electrical quantities
Amount of surface charge (voltage) on the substrate
Flow field calculations
Contamination analysis
Environmental concerns
Cavity Ion
flow + transportation
(corona wind)

6. 600
500
Voltage(Vots)
400
300
200
Inlet Exit 100
Substrate 0
0 0.5 1 1.5 2
X(cm)

8. Voltage=4500 Volts Voltage=6000 Volts Speed =0.25 m/s

11. Voltage=4500 Volts Voltage=6000 Volts Speed =0.25 m/s

12. Voltage=4500 Volts

13. Voltage=6000 Volts

14. Speed=0.25 m/s

15. Wire voltag=4500 Volt, Photoreceptor speed=0.5 m/s, Gap=5.3 mm
Wire voltage=6000 Volt, Photoreceptor speed=0.5 m/s, Gap=5.3 mm d=2 mm
Wire voltage=6000 Volt, Photoreceptor speed=0.25 m/s, Gap=5.3 mm
Wire voltage=6000 Volt, Photoreceptor speed=0.25 m/s, Gap=2 mm
U=0.25 m/s
1000
800
V=6000 Volt
Voltage(Volt)
600 d=5.3 mm
400
V=4500 Volt
U=0.5 m/s
200
0
0 10 20 30 40
X(mm)

16. Numerical simulations of 3D
Electrohydrodynamics in corotrons
were performed.
Charging of substrate under various
conditions is analyzed.
The computational model provides a
tool for optimization of design of
corotrons.