LOW FRICTION TAPE HEAD AND SYSTEM IMPLEMENTING SAME

• US 20120300338A1
• Filed: 05/26/2011
• Published: 11/29/2012
• Est. Priority Date: 05/26/2011
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Biskeborn, Robert G.
• Granted Patent: US 8,373,944 B2
• Time in Patent Office: Days
• US Class Current: 360/75
• CPC Class Codes: G11B 15/62 Maintaining desired spacing between record carrier and head
• CPC Class Codes: G11B 5/00826 comprising a plurality of single poles or gaps or groups thereof operative at the same time
• CPC Class Codes: G11B 5/1871 Shaping or contouring of the transducing or guiding surface
• CPC Class Codes: G11B 5/255 comprising means for protection against wear in thin film structures G11B5/3106
• CPC Class Codes: G11B 5/3106 where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination G11B5/3133 takes precedence
• CPC Class Codes: G11B 5/60 Fluid-dynamic spacing of heads from record-carriers

Abstract

A magnetic head according to one embodiment includes outer modules each having a tape bearing surface and an array of transducers selected from a group consisting of readers and writers; and an inner module positioned between the outer modules, the inner module having a tape bearing surface and an array of transducers selected from a group consisting of readers and writers, wherein portions of edges of the tape bearing surface of the inner module are non-skiving in regions not aligned with the array of transducers in a direction of media travel thereacross, wherein an outer edge of the tape bearing surface of each of the outer modules are adapted for skiving air from the magnetic medium when the magnetic medium travels in a direction from the respective outer module towards the inner module.

Claims

1. A magnetic head, comprising:

outer modules each having a tape bearing surface and an array of transducers selected from a group consisting of readers and writers; and

an inner module positioned between the outer modules, the inner module having a tape bearing surface and an array of transducers selected from a group consisting of readers and writers,

wherein portions of edges of the tape bearing surface of the inner module are non-skiving in regions not aligned with the array of transducers in a direction of media travel thereacross,

wherein an outer edge of the tape bearing surface of each of the outer modules are adapted for skiving air from the magnetic medium when the magnetic medium travels in a direction from the respective outer module towards the inner module.

2. The head as recited in claim 1, wherein edges of the tape bearing surface of the inner module are adapted for skiving in regions aligned with the array of transducers in the direction of media travel thereacross.

3. The head as recited in claim 1, wherein the array of transducers of the inner module includes a plurality of readers, at least one servo reader calibrated to the position of one or more of the readers of the inner module, and no writers;

wherein the array of transducers of each of the outer module includes a plurality of writers.

4. The head as recited in claim 1, wherein the inner module has patterning for at least one of inducing the magnetic medium to fly thereover in an area away from the transducers and reducing stiction of the medium to the tape bearing surface of the at least one portion.

5. The head as recited in claim 4, wherein the patterning has physical characteristics of being lapped by tape lapping.

6. The head as recited in claim 1, wherein an entire length of a tape engaging portion of the outer edge of each of the tape bearing surfaces of the outer modules are adapted for skiving.

7. The head as recited in claim 1, wherein portions of the tape bearing surface of the inner module positioned laterally to the array are rough.

8. The head as recited in claim 1, wherein a length of the tape bearing surface of the inner module in the direction of media travel thereacross is less than about 500 microns and greater than 0 microns.

9. A data storage system, comprising:

a magnetic head as recited in claim 1;

a drive mechanism for passing a magnetic medium over the magnetic head; and

a controller electrically coupled to the magnetic head.

10. A magnetic head, comprising:

outer modules each having a tape bearing surface and an array of transducers selected from a group consisting of readers and writers; and

an inner module positioned between the outer modules, the inner module having a tape bearing surface and an array of transducers selected from a group consisting of readers and writers,

wherein portions of the tape bearing surface of the inner module positioned laterally to the array of transducers are rough,

wherein an outer edge of the tape bearing surface of each of the outer modules is adapted for skiving air from the magnetic medium when the magnetic medium travels in a direction from the respective outer module towards the inner module.

11. The head as recited in claim 10, wherein edges of the tape bearing surface of the inner module are adapted for skiving in regions aligned with the array of transducers in a direction of media travel thereacross, wherein edges of the tape bearing surface of the inner module are non-skiving in regions not aligned with the array of transducers in the direction of media travel thereacross.

12. The head as recited in claim 10, wherein an entire length of a tape engaging portion of the outer edge of each of the tape bearing surfaces of the outer modules are adapted for skiving.

13. A data storage system, comprising:

a magnetic head as recited in claim 10;

a drive mechanism for passing a magnetic medium over the magnetic head; and

a controller electrically coupled to the magnetic head.

14. A magnetic head, comprising:

outer modules each having a tape bearing surface and an array of transducers selected from a group consisting of readers and writers;

an inner module positioned between the outer modules, the inner module having a tape bearing surface and an array of transducers selected from a group consisting of readers and writers,

wherein portions of inner edges of the tape bearing surface of the each of the outer modules are non-skiving in regions not aligned with the array of transducers in a direction of media travel thereacross, the inner edges facing the inner module.

15. The head as recited in claim 14, wherein edges of the tape bearing surface of the inner module are adapted for skiving in regions aligned with the array of transducers in the direction of media travel thereacross, wherein portions of edges of the tape bearing surface of the inner module are non-skiving in regions not aligned with the array of transducers in the direction of media travel thereacross.

16. The head as recited in claim 14, wherein outer edges of the tape bearing surface of the outer modules are non-skiving relative to an entire width of a tape traveling theracross.

17. The head as recited in claim 14, wherein edges of the tape bearing surface of the inner module are adapted for skiving an entire width of a tape traveling theracross.

18. The head as recited in claim 14, wherein outer edges of the tape bearing surface of each of the outer modules have a skiving edge extending from a first end of the edge towards a second end thereof, wherein the outer edges of the tape bearing surface of each of the outer modules have anon-skiving edge extending from the second end of the edge to the associated skiving edge.

19. A data storage system, comprising:

a magnetic head as recited in claim 14;

a drive mechanism for passing a magnetic medium over the magnetic head; and

a controller electrically coupled to the magnetic head.