Apparatus and method for printing maxels

• US 9,105,384 B2
• Filed: 08/15/2014
• Issued: 08/11/2015
• Est. Priority Date: 04/04/2008
• Status: Active Grant

• Current Assignee: Correlated Magnetics Research, LLC
• Original Assignee: Correlation Partners LLC
• Inventors: Roberts, Mark D., Fullerton, Larry W.
• Primary Examiner(s): BARRERA, RAMON M
• Application Number:
  US14/460,490
• Publication Number:
  US 20140354382A1
• Time in Patent Office: 361 Days
• Field of Search: 335/284, 361143-156
• US Class Current: 1/1
• CPC Class Codes: H01F 13/003 Methods and devices for magnetising permanent magnets permanent magnets H01F7/02
• CPC Class Codes: H01F 7/02 Permanent magnets [PM]
• CPC Class Codes: H01F 7/0215 Flexible forms, sheets

Abstract

Magnetic structure production may relate, by way of example but not limitation, to methods, systems, etc. for producing magnetic structures by printing magnetic pixels (aka maxels) into a magnetizable material. Disclosed herein is production of magnetic structures having, for example: maxels of varying shapes, maxels with different positioning, individual maxels with different properties, maxel patterns having different magnetic field characteristics, combinations thereof, and so forth. In certain example implementations disclosed herein, a second maxel may be printed such that it partially overwrites a first maxel to produce a magnetic structure having overlapping maxels. In certain example implementations disclosed herein, a magnetic printer may include a print head comprising multiple parts and having various properties. In certain example implementations disclosed herein, various techniques for using a magnetic printer may be employed to produce different magnetic structures. Furthermore, description of additional magnet-related technology and example implementations thereof is included herein.

Claims

1. An apparatus configured for printing maxels, the apparatus comprising:

a first magnetic print head comprising a first flat electrical conductor having a first plurality of electrically conductive layers forming a first hole and a first inductor coil, wherein said first hole extends through the first plurality of electrically conductive layers,

wherein said first flat electrical conductor has a first conductor width extending from an outer perimeter of said first hole to an outer perimeter of said first inductor coil,

and wherein said first flat electrical conductor has a first conductor thickness,

and wherein said first conductor width is greater than or equal to twice said first conductor thickness;

a second magnetic print head comprising a second flat electrical conductor having a second plurality of electrically conductive layers forming a second hole and a second inductor coil, wherein said second hole extends through the second plurality of electrically conductive layers,

wherein said second flat electrical conductor has a second conductor width extending from an outer perimeter of said second hole to an outer perimeter of said second inductor coil,

and wherein said second flat electrical conductor has a second conductor thickness,

and wherein said second conductor width is greater than or equal to twice said second conductor thickness;

at least one first circuitry configured to position said first hole of said first magnetic print head adjacent to a first location on a first surface of a magnetizable material where a first maxel is to be printed and to position said second hole of said second magnetic print head adjacent to a second location on a second surface of said magnetizable material where a second maxel is to be printed, wherein said first surface is opposite said second surface; and

at least one second circuitry configured to interact with said first magnetic print head to print said first maxel at said first location on the first surface of said magnetizable material and to interact with said second magnetic print head to print said second maxel at said second location on the second surface of said magnetizable material.

2. The apparatus of claim 1, wherein said first magnetic print head is configured to generate a magnetizing field having a first magnetic flux density in and near said first hole and a second magnetic flux density elsewhere when a current is applied to said first magnetic print head, and wherein the first magnetic flux density is sufficient to create saturated magnetization in said magnetizable material and said second magnetic flux density is insufficient to create saturated magnetization in said magnetizable material.

3. The apparatus of claim 2, wherein said first magnetic flux density is sufficient to create saturated magnetization in the magnetizable material comprising Neodymium.

4. The apparatus of claim 1, wherein said second magnetic print head is configured to generate a magnetizing field having a first magnetic flux density in and near said second hole and a second magnetic flux density elsewhere when a current is applied to said second magnetic print head, and wherein the first magnetic flux density is greater than the second magnetic flux density.

5. The apparatus of claim 1, wherein the printed first maxel is associated with a first polarity and a second polarity opposite said first polarity, wherein the first polarity associated with the printed first maxel is substantially exposed at the first surface of said magnetizable material but the second polarity associated with the printed first maxel is not substantially exposed at the first surface of said magnetizable material.

6. The apparatus of claim 5, wherein the printed second maxel is associated with said first polarity and said second polarity opposite said first polarity, wherein the second polarity associated with the printed second maxel is substantially exposed at the second surface of said magnetizable material but the first polarity associated with the printed second maxel is not substantially exposed at the second surface of said magnetizable material.

7. The apparatus of claim 5, wherein the printed second maxel is associated with said first polarity and said second polarity opposite said first polarity, wherein the first polarity associated with the printed second maxel is substantially exposed at the second surface of said magnetizable material but the second polarity associated with the printed second maxel is not substantially exposed at the second surface of said magnetizable material.

8. The apparatus of claim 1, wherein said first maxel is complementary to said second maxel.

9. The apparatus of claim 1, wherein said first maxel is anti-complementary to said second maxel.

10. The apparatus of claim 1, wherein said first location is opposite said second location.

11. The apparatus of claim 1, wherein said at least one second circuitry interacts with said first magnetic print head and said second magnetic print head such that said first maxel and said second maxel overlap.

12. The apparatus of claim 1, wherein said at least one second circuitry interacts with said first magnetic print head and said magnetic second print head such that said first and said second maxel are printed one at a time.

13. The apparatus of claim 1, wherein said at least one second circuitry interacts with said first magnetic print head and said magnetic second print head such that said first maxel and said second maxel are printed simultaneously.

14. The apparatus of claim 1, wherein said first magnetic print head produces a magnetic pulse having a sub-microsecond duration.

16. The apparatus of claim 1, wherein said magnetizable material is a previously-magnetized material originally having one polarity per side and said printing of said first maxel and said second maxel re-magnetizes said magnetizable material to have multiple polarities per side.

17. The apparatus of claim 1, wherein said magnetizable material is a magnetically hard material.

18. The apparatus of claim 1, wherein said magnetizable material comprises neodymium.

15. A method for printing maxels, comprising:

providing a first magnetic print head comprising a first flat electrical conductor having a first plurality of electrically conductive layers forming a first hole and a first inductor coil, wherein said first hole extends through the first plurality of electrically conductive layers,

wherein said first flat electrical conductor has a first conductor width extending from an outer perimeter of said first hole to an outer perimeter of said first inductor coil,

and wherein said first flat electrical conductor has a first conductor thickness,

and wherein said first conductor width is greater than or equal to twice said first conductor thickness;

providing a second magnetic print head comprising a second flat electrical conductor having a second plurality of electrically conductive layers forming a second hole and a second inductor coil, wherein the second hole extends through the second plurality of electrically conductive layers,

wherein said second flat electrical conductor has a second conductor width extending from an outer perimeter of said second hole to an outer perimeter of said second inductor coil,

and wherein said second flat electrical conductor has a second conductor thickness,

and wherein said second conductor width is greater than or equal to twice said second conductor thickness;

positioning said first hole of said first magnetic print head adjacent to a first location on a first surface of a magnetizable material where a first maxel is to be printed;

positioning said second hole of said second magnetic print head adjacent to a second location on a second surface of said magnetizable material where a second maxel is to be printed, wherein said first surface is opposite said second surface on the magnetizable material;

printing, using said first magnetic print head, said first maxel at said first location on the first surface of said magnetizable material; and

printing, using said second magnetic print head, said second maxel at said second location on the second surface of said magnetizable material.