Tape head contour utilizing enclosed through slots

• US 6,433,959 B1
• Filed: 10/30/2000
• Issued: 08/13/2002
• Est. Priority Date: 10/30/2000
• Status: Active Grant

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Storage Technologies Corporation (Oracle Corporation)
• Inventors: Lakshmikumaran, Anand V., Barber, Terry, Torline, Joseph E., Nosek, Ken, Sundaram, Ramesh
• Primary Examiner(s): Tupper, Robert S.
• Application Number:
  US09/699,868
• Time in Patent Office: 652 Days
• Field of Search: 360/122, 360/221, 360/129
• US Class Current: 360/122
• CPC Class Codes: G11B 15/64 by fluid-dynamic spacing
• CPC Class Codes: G11B 5/10 Structure or manufacture of housings or shields for heads
• 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 5/584 for track following on tapes
• CPC Class Codes: G11B 5/60 Fluid-dynamic spacing of heads from record-carriers

Abstract

A magnetic tape head assembly with enclosed through slots to eliminate an air bearing at high tape speeds and lower operating tape tensions is provided. In one embodiment of the present invention, the magnetic tape head comprises a recording gap, containing read/write elements, across the width of the head and slots exposed to the tape head surface that faces the plane of the tape. These slots run through the head approximately perpendicular to the plane of the tape and are open to ambient pressure at a tape head surface other than the surface facing the plane of the tape. These slots are aligned with the read/write elements along the recording gap.

Claims

1. A magnetic tape head assembly, comprising:

a recording gap, containing read/write elements, extending across a width of the tape head; and

slots exposed through a top of the tape head to the tape head surface that faces the plane of a tape;

wherein the slots run through the tape head approximately perpendicular to the plane of the tape from the top of the tape head to a bottom of the tape head, said slots being open to ambient pressure through the top and bottom of the tape head.

2. The magnetic tape head in claim 1, wherein the slots are open to ambient pressure at a tape head surface other than the tape head surface facing the plane of the tape.

3. The magnetic tape head in claim 1, wherein the slots are arranged in line with the read/write elements along the recording gap.

4. The magnetic tape head in claim 1, further comprising an additional slot at an end of the recording gap wherein the additional slot is not aligned with a corresponding read/write element.

5. The magnetic tape head in claim 1, wherein the slots are placed in rows on both sides of the recording gap.

6. The magnetic tape head in claim 1, wherein the slots are placed in a single row adjacent to the recording gap.

7. The magnetic tape head in claim 1, wherein the slots open into a common channel which runs below the tape head surface that faces the plane of the tape.

8. The magnetic tape head in claim 1, further comprising transverse slots.

9. The magnetic tape head in claim 1, further comprising bleed slots.

10. The magnetic tape head in claim 1, further comprising transverse slots and bleed slots.

11. The magnetic tape head according to claim 1, further comprising:

a row of said slots, said row being located across the tape head surface that faces the plane of the tape transverse to a direction of the tape.

12. The magnetic tape head according to claim 11, further comprising:

said slots being located in said row in series transversely across the tape head surface.

13. The magnetic tape head according to claim 12, further comprising:

a second row of generally rectangular slots, each one of said slots in said second row being located in series transversely across the tape head surface, each one of said slots in said second row having a length and a width, said length being longer than said width, each one of said slots in said second row being positioned such that said width is transverse to a direction of movement of said tape; and

each one of said slots in said row having a length and a width, said length being longer than said width, each one of said slots being positioned such that said length is transverse to a direction of movement of said tape.

14. The magnetic tape head according to claim 11, further comprising:

a plurality of rows of said slots, each one of said plurality of rows being located across the tape head surface that faces the plane of the tape transverse to a direction of the tape.

15. The magnetic tape head according to claim 11, further comprising:

said row of said slots being located adjacent to a recording gap.

16. The magnetic tape head according to claim 13, further comprising:

said row of said slots being located adjacent to a row of a plurality of recording elements.

17. The magnetic tape head according to claim 1, further comprising:

each one of said slots each being generally rectangular.

18. The magnetic tape head according to claim 17, further comprising:

each one of said generally rectangular slots having a length and a width, said length being longer than said width, each one of said slots being positioned such that said length is transverse to a direction of movement of said tape.