Systems and methods for contactless automatic dust removal from a glass surface
View Patent ↗An imaging device for automatic dust removal is provided. The imaging device may include a glass layer and an electrostatic particle removal system associated with the glass layer. The electrostatic particle removal system may include an induction layer configured to induce a charge to a particle located between the glass layer and the electrostatic particle removal system, a field grid layer configured to provide an electric field for moving the charged particle, and a collector configured to collect the charged particle moved by the electric field.
1. An imaging device, comprising:
a power source;
a glass layer; and
an electrostatic particle removal system associated with the glass layer and the power source, the electrostatic particle removal system comprising:
an induction grid layer including a plurality of conductive pads, the induction grid layer configured to:
polarize a plurality of neutrally charged particles located between the glass layer and the electrostatic particle removal system to form a plurality of polarized particles in response to the power source applying a first voltage to the induction grid layer; and
alter at least some of the polarized particles from neutrally charged particles to negatively or positively charged particles without any coronal discharge in response to the power source applying a second voltage to the plurality of conductive pads;
a field grid layer configured to provide an electric field for moving the charged particles; and
a collector base configured to collect the charged particles moved by the electric field.
2. The imaging device of claim 1 , wherein the field grid layer comprises:
a plurality of electrodes configured to generate the electric field; and
an insulation film configured to prevent redistribution of the polarized particles by the induction layer.
3. The imaging device of claim 1 , wherein the field grid layer comprises a vertical field grid or a horizontal field grid.
4. The imaging device of claim 1 , wherein the field grid layer is configured to provide a moving electric field.
5. The imaging device of claim 1 , wherein a third voltage is applied to the collector base to attract the charged particles.
6. The imaging device of claim 1 comprising a printer, a scanner, a copier, a fax, or any combination thereof.
7. A method, comprising:
applying a first voltage to an induction layer to polarize a plurality of neutrally charged particles located between a glass layer of an imaging device and an electrostatic particle removal system to form a plurality of polarized particles;
applying a second voltage to a plurality of conductive pads in the induction layer to alter at least some of the polarized particles from neutrally charged particles to negatively or positively charged particles without any coronal discharge;
generating a moving electric field to move the charged particles; and collecting the charged particles moved by the moving electric field.
8. The method of claim 7 , wherein generating a moving electric field comprises applying an alternating current field or a direct current electric field to electrodes of the electrostatic particle removal system.
9. The method of claim 7 , further comprising sustaining the second voltage during application of the moving electric field.
10. The method of claim 7 , wherein collecting the charged particles comprises applying a third voltage to a collector base of the electrostatic particle removal system.
11. A method, comprising:
applying a first voltage to an induction grid for polarizing a plurality of neutrally charged particles to form a plurality of polarized particles;
applying a second voltage to a plurality of conductive pads in the induction grid for altering at least some of the polarized particles from neutrally charged particles to negatively or positively charged particles without any coronal discharge;
applying a third voltage to a plurality of electrodes in a field grid to generate an electric field for moving the charged particles; and
applying a fourth voltage to a collector base to attract the charged particles moved by the electric field.
12. The method of claim 11 , wherein applying the third voltage to the plurality of electrodes comprises providing a direct current waveform or an alternating current waveform at a predetermined voltage.
13. The method of claim 11 , wherein applying the third voltage to the plurality of electrodes generates the electric field in a horizontal direction, a vertical direction, or a combination of a horizontal and vertical direction.
14. The method of claim 11 , wherein applying the third voltage to the plurality of electrodes comprises applying the third voltage to a vertical array of electrodes or a horizontal array of electrodes.
15. The method of claim 11 , wherein applying the second voltage to the plurality of conductive pads in the induction grid comprises applying a pulse alternating current waveform or a sinusoidal alternating current waveform at a predetermined voltage.
16. The method of claim 11 , wherein applying the fourth voltage to the collector base comprises applying a substantially constant voltage.
17. The method of claim 11 , wherein applying the second voltage to the plurality of conductive pads in the induction grid comprises applying a constant voltage.