Magnetic recording drives with active photocatalytic filtration

Patent metadata

Field	Value
Publication number	US-9123387-B1
Application number	US-201414573873-A
Country	US
Kind code	B1
Filing date	Dec 17, 2014
Priority date	Aug 21, 2014
Publication date	Sep 1, 2015
Grant date	Sep 1, 2015

Abstract

One aspect of a recording device includes a memory, a head configured to access the memory, and a photocatalytic filter configured to prevent contaminants from depositing on the memory or the head, the photocatalytic filter comprising a photocatalytic material, and a light-emitting diode configured to illuminate the photocatalytic material.

First claim

What is claimed is:

1. A recording device, comprising:
a memory;
a head configured to access the memory; and
a photocatalytic filter configured to prevent contaminants from depositing on the memory or the head, the photocatalytic filter comprising:
a photocatalytic material; and
a light-emitting diode configured to illuminate the photocatalytic material.

2. The device of claim 1 , further comprising control circuitry configured to control power and a duty cycle of the light-emitting diode.

3. The device of claim 2 , wherein control circuitry is configured to power the light-emitting diode intermittently.

4. The device of claim 2 , further comprising a flex circuit coupled to the control circuitry, wherein the light-emitting diode is mounted on the flex circuit.

5. The device of claim 4 , wherein the light-emitting diode is soldered to the flex circuit.

6. The device of claim 4 , further comprising:
a base; and
a bracket mounted on the base;
wherein the flex circuit is mounted on the bracket.

7. The device of claim 1 , further comprising a housing containing the memory, the head, and the photocatalytic filter therein.

8. The device of claim 7 , wherein the photocatalytic material is configured to adsorb the contaminants within the housing and convert the contaminants into inert compounds when illuminated by the light-emitting diode.

9. The device of claim 7 , further comprising an air flow barrier located within the housing, the air flow barrier configured to redirect an air flow within the housing towards the photocatalytic filter.

10. The device of claim 1 , wherein the photocatalytic material includes an anatase form of titanium dioxide.

11. A method for filtering contaminants within a recording device configured to access memory using a head, the method comprising:
powering a light-emitting diode to illuminate a photocatalytic material to prevent contaminants from depositing on the memory or the head.

12. The method of claim 11 , further comprising controlling a power and duty cycle of the light-emitting diode using control circuitry.

13. The method of claim 12 , further comprising powering the light-emitting diode intermittently using the control circuitry.

14. The method of claim 13 , wherein the light-emitting diode is mounted on a flex circuit coupled to the control circuitry.

15. The method of claim 14 , wherein the light-emitting diode is mounted on the flex circuit by solder.

16. The method of claim 15 , wherein the flex circuit is mounted on a bracket that is mounted to a base of the recording device.

17. The method of claim 11 , wherein the recording device comprises a housing, the memory, the head, and a photocatalytic filter being within the housing.

18. The method of claim 17 , wherein the photocatalytic material is configured to adsorb the contaminants within the housing and convert them into inert compounds when illuminated by the light-emitting diode.

19. The method of claim 17 , wherein the recording device further comprises an air flow barrier within the housing, wherein the air flow barrier is configured to direct an air flow within the housing towards the photocatalytic filter.

20. The method of claim 11 , wherein the photocatalytic material includes an anatase form of titanium dioxide.

Assignees

• Wd Media Llc

Inventors

• Novotny Vlad
• Berding Keith R

Classifications

• G11B33/146 Primary

  constructional details of filters · CPC title

• B01D2257/553

  Compounds comprising hydrogen, e.g. silanes · CPC title

• B01D2257/304

  Hydrogen sulfide · CPC title

• G11B25/043

  using rotating discs · CPC title

• B01D2255/20707

  Titanium · CPC title