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1. WO2020112119 - FILTRATION DE SUPPORT LIQUIDE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

1 . A filtration apparatus to remove non-liquid contaminant from liquid carrier, the filtration apparatus comprising:

an electrode having a first surface, wherein the electrode is to generate an electric field towards liquid carrier containing non-liquid contaminant;

a reservoir having a wall defined at least partially by the first surface, the reservoir to house a volume of liquid carrier; and

a plurality of plates, each plate having an accumulation surface, wherein a portion of each plate is within the reservoir, so as to be submerged in the volume of liquid carrier;

wherein an electric field formed between the first surface and the accumulation surface of each plate of the plurality of plates is to act on the liquid carrier, to thereby cause non-liquid contaminant to adhere to an accumulation surface of a plate of the plurality of plates.

2. A filtration apparatus according to claim 1 , further comprising:

an inlet to receive the liquid carrier containing non-liquid contaminant into the reservoir; and

an outlet to allow filtered liquid carrier to flow out of the reservoir.

3. A filtration apparatus according to claim 2, wherein the inlet is positioned below the plurality of plates.

4. A filtration apparatus according to claim 2, wherein the outlet comprises an overflow outlet at an edge of the wall of the reservoir.

5. A filtration apparatus according to claim 1 , wherein the plurality of plates are electrically grounded.

6. A filtration apparatus according to claim 1 , wherein each of the plurality of plates is mounted through its centre to a rotatable axis, such that the plurality of plates are able to rotate about the axis, through the volume of liquid carrier.

7. A filtration apparatus according to claim 6, wherein the plurality of plates are mounted parallel to one another, with substantially equal spacing between each adjacent pair of plates.

8. A filtration apparatus according to claim 1 , further comprising:

a displacement element to displace non-liquid contaminant from the plurality of plates.

9. A filtration apparatus according to claim 8, wherein the displacement element comprises a plurality of fingers, each finger to engage opposing surfaces of a pair of adjacent plates.

10. A filtration method to remove contaminant from liquid carrier, the method comprising:

supplying liquid carrier to a reservoir defined at least partially by a surface of an electrode, wherein a plurality of plates are disposed partially within the reservoir such that each plate is partially submerged in the liquid carrier; and

applying a voltage to the electrode, thereby to generate an electric field between the electrode surface and the plurality of plates, and to cause contaminant from the liquid carrier to adhere to the plurality of plates.

1 1. A filtration method according to claim 10, further comprising:

rotating the plurality of plates about a common axis, such that the plates rotate relative to the reservoir.

12. A filtration method according to claim 10, further comprising:

positioning a displacement member in engagement with the plurality of plates; and

moving the plurality of plates relative to the displacement member to displace adhered contaminant from the plates.

13. A filtration method according to claim 10, further comprising:

enabling filtered liquid carrier to egress the reservoir via an outlet.

14. A print apparatus comprising:

a print component to print onto a printable substrate during a printing operation; and

a filtration component to remove non-liquid contaminant from liquid carrier used in the printing operation, the filtration component comprising:

a container to house a volume of liquid carrier, the container having a wall forming an electrode; and

a plurality of discs, each disc having a contaminant receiving surface, wherein each disc is partially disposed within the container, such that each disc is partially submerged in the volume of liquid carrier;

wherein, when a voltage is applied to the electrode, an electric field is formed between the electrode and the plurality of discs, thereby causing non-liquid contaminant in the liquid carrier to adhere to the contaminant receiving surfaces.

15. A print apparatus according to claim 14, wherein the filtration component further comprises a contaminant displacement member to displace non liquid contaminant from the plurality of plates; and

wherein the print apparatus further comprises:

a collector to receive filtered liquid carrier from the reservoir; and

a receptacle to receive non-liquid contaminant displaced from the plurality of plates.