Method for manufacturing a magnetic head with mini-outriggers
View Patent ↗An exemplary magnetic head assembly for use with magnetic recording media is provided. In one example, a head includes a data island associated with at least one data transducer, the data island having a width along a direction of media transport and a radius of curvature. The magnetic head further includes a mini-outrigger placed adjacent to the data island and separated by a void, wherein a width of the mini-outrigger along the direction of media transport is less than the width of the data island. Additionally, in one example, the radius of curvature of the mini-outrigger is less than the radius of curvature of the data island. The wrap angle of magnetic storage tape to the data island may be less than 3 degrees. Further, the radius of curvature of the mini-outrigger may be less than one-half the radius of curvature of the data island.
1. A method for manufacturing a magnetic head for use with magnetic storage media, comprising:
forming islands in a magnetic head structure to define a mini-outrigger adjacent a data island, the data island extending transverse to a direction the media advances and separated from the mini-outrigger by a void; and
removing a portion of the mini-outrigger such that the height of at least a portion of a surface of the mini-outrigger is reduced relative to a surface of the data island thereby creating a wrap angle between a magnetic storage tape and the surface of the data island.
2. The method of claim 1 , wherein the islands are formed in a monolithic structure.
3. The method of claim 1 , wherein the wrap angle is less than 3 degrees.
4. The method of claim 1 , wherein the wrap angle is less than 1 degree.
5. The method of claim 1 , wherein the wrap angle is less than 0.5 degrees.
6. The method of claim 1 , wherein the data island includes a radius of curvature and the mini-outrigger includes a radius of curvature, and the radius of curvature of the mini-outrigger is less than the radius of curvature of the data island.
7. The method of claim 6 , wherein the radius of curvature of the mini-outrigger is less than one half of the radius of curvature of the data island.
8. The method of claim 1 , wherein removing the portion of the mini-outrigger surface comprises processing the head structure with a lapping tape.
9. The method of claim 8 , wherein processing the head structure with a lapping tape comprises lapping according to a known lapping function to remove a predetermined portion of the mini-outrigger surface.
10. The method of claim 1 , wherein forming comprises etching.
11. The method of claim 1 , wherein forming comprises machining.
12. The method of claim 1 , wherein the width of the mini-outrigger along a direction of tape transport is less than 8 milli-inches.
13. The method of claim 1 , wherein the width of the data island along a direction of tape transport is between 10 and 20 milli-inches.
14. The method of claim 1 , wherein a ratio of the width of the data island along a direction of tape transport to the width of the mini-outrigger along the direction of tape transport is at least approximately 1:1.
15. The method of claim 14 , wherein the ratio of the width of the data island along a direction of tape transport to the width of the mini-outrigger along the direction of tape transport not greater than approximately 5:1.
16. A method for manufacturing a magnetic head for use with magnetic storage media, comprising:
forming islands in a magnetic head structure to define a mini-outrigger adjacent a data island, the ratio of the width of the data island along a direction of tape transport to the width of the mini-outrigger along the direction of tape transport being at least approximately 1:1; and
removing a portion of the mini-outrigger such that the height of at least a portion of a surface of the mini-outrigger is reduced relative to a surface of the data island.
17. The method of claim 16 wherein the step of forming includes the data island extending transverse to a direction the media advances and being separated from the mini-outrigger by a void.
18. The method of claim 16 wherein the step of removing includes the step of creating a wrap angle of less than 3 degrees between a magnetic storage tape and the surface of the data island.
19. The method of claim 18 , wherein the wrap angle is less than 1 degree.
20. A method for manufacturing a magnetic head for use with magnetic storage media, comprising:
forming islands in a magnetic head structure to define a mini-outrigger adjacent a data island, the data island extending transverse to a direction the media advances and separated from the mini-outrigger by a void, the ratio of the width of the data island along a direction of tape transport to the width of the mini-outrigger along the direction of tape transport being at least approximately 1:1; and
removing a portion of the mini-outrigger such that the height of at least a portion of a surface of the mini-outrigger is reduced relative to a surface of the data island thereby creating a wrap angle of less than 3 degrees between a magnetic storage tape and the surface of the data island.