Head having wrap-controlled flexible media interface

• US 10,068,591 B2
• Filed: 12/05/2016
• Issued: 09/04/2018
• Est. Priority Date: 12/05/2016
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Biskeborn, Robert G., Liang, Jason, Lo, Calvin S.
• Primary Examiner(s): EVANS, JEFFERSON A
• Application Number:
  US15/369,651
• Publication Number:
  US 20180158472A1
• Time in Patent Office: 638 Days
• Field of Search: 360231, 360121, 360122
• CPC Class Codes: G11B 15/60 Guiding record carrier guiding devices structurally associated with magazines or cassettes G11B23/04
• CPC Class Codes: G11B 15/62 Maintaining desired spacing between record carrier and head
• CPC Class Codes: G11B 5/008 Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires G11B15/00 G11B19/00 take precedence; bulk transferring of information magnetisation for re-recording G11B5/865; marking record carriers in digital fashion G06K
• CPC Class Codes: G11B 5/00817 on longitudinal tracks only, e.g. for serpentine format recording
• CPC Class Codes: G11B 5/187 Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features G11B5/265, G11B5/29 , G11B5/31 take precedence
• CPC Class Codes: G11B 5/29 Structure or manufacture of unitary devices formed of plural heads for more than one track G11B5/33, G11B5/49 and subgroups take precedence; in thin film structure G11B5/31
• CPC Class Codes: G11B 5/31 using thin films G11B5/1274, G11B5/1278, G11B5/1874, G11B5/1875, G11B5/33, G11B5/49 take precedence; magnetic thin film structures H01F10/00
• CPC Class Codes: G11B 5/40 Protective measures on heads, e.g. against excessive temperature G11B5/31 takes precedence; protection against wear G11B5/255 ; protective structure of the head: see under structures, e.g. G11B5/3106
• CPC Class Codes: G11B 5/4893 relative to moving tape

Abstract

An apparatus according to one embodiment includes a module having a tape bearing surface, a magnetic transducer in a thin film region, and an edge closest to the transducers. A guide is positioned relative to the edge for inducing tenting of a moving magnetic recording tape above a tape tenting region of the tape bearing surface. The magnetic transducer is positioned along the tape tenting region.

Claims

1. An apparatus, comprising:

a module having a tape bearing surface, a magnetic transducer in a thin film region, and an edge closest thereto; and

a guide positioned relative to the edge for inducing tenting of a moving magnetic recording tape above a tape tenting region of the tape bearing surface, wherein the tenting includes a peak,

wherein the magnetic transducer is positioned along the tape tenting region, wherein the magnetic transducer is positioned a distance from a location on the tape bearing surface directly under the peak that is more than one-third the length from the location directly under the peak to the edge closest thereto.

2. An apparatus as recited in claim 1, wherein the guide is positioned to set a wrap angle relative to a plane of the tape bearing surface, the wrap angle being greater than 0 degrees.

3. An apparatus as recited in claim 2, wherein the wrap angle is in a range of about 0.1 to about 1.5 degrees.

4. An apparatus as recited in claim 1, wherein the tape bearing surface is planar.

5. An apparatus as recited in claim 1, wherein the magnetic transducer is positioned long the tape tenting region a distance from the location on the tape bearing surface directly under the peak that is more than one-half the length from the location directly under the peak to the edge closest thereto.

6. An apparatus as recited in claim 1, wherein the magnetic transducer is positioned between a leading edge and a peak of the tape tenting region.

7. An apparatus as recited in claim 2, wherein the wrap angle is in a range of about 0.1 to 0.49 degrees.

8. An apparatus as recited in claim 1, wherein a media facing side of the magnetic transducer is recessed from the tape bearing surface.

9. An apparatus as recited in claim 1, comprising a wear coating on the tape bearing surface.

10. An apparatus as recited in claim 1, wherein the guide is a roller.

11. An apparatus as recited in claim 1, wherein the guide is a second module having magnetic transducers thereon.

12. An apparatus as recited in claim 1, wherein the guide is an integral outrigger.

13. An apparatus as recited in claim 1, wherein the magnetic transducer is a tunneling magnetoresistance sensor.

14. An apparatus as recited in claim 1, wherein the magnetic transducer is a write transducer.

15. An apparatus as recited in claim 14, wherein the write transducer is not recessed.

16. An apparatus as recited in claim 1, wherein the magnetic transducer is a Hall effect sensor.

17. An apparatus as recited in claim 1, further comprising:

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

a controller electrically coupled to the magnetic transducer.

18. An apparatus, comprising:

a module having a tape bearing surface, an array of magnetic transducers in a thin film region, and an edge closest thereto; and

a guide positioned relative to the edge for inducing tenting of a moving magnetic recording tape above a tape tenting region of the tape bearing surface, wherein the tenting includes a peak,

wherein the magnetic transducers are positioned along the tape tenting region, wherein the magnetic transducers are positioned a distance from a location on the tape bearing surface directly under the peak that is more than one-third the length from the location directly under the peak to the edge closest thereto.

19. An apparatus as recited in claim 18, wherein the guide is positioned to set a wrap angle relative to a plane of the tape bearing surface, the wrap angle being greater than 0 degrees.

20. An apparatus as recited in claim 18, wherein the magnetic transducers are positioned along the tape tenting region a distance from the location on the tape bearing surface directly under the peak that is more than one-half the length from the location directly under the peak to the edge closest thereto.

21. An apparatus as recited in claim 18, wherein the tape bearing surface is planar.

22. An apparatus as recited in claim 18, wherein media facing sides of the magnetic transducers are recessed from the tape bearing surface.

23. An apparatus as recited in claim 18, comprising a wear coating on the tape bearing surface.

24. An apparatus as recited in claim 18, further comprising:

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

a controller electrically coupled to the magnetic transducers.

25. An apparatus, comprising:

a module having a tape bearing surface, a magnetic transducer in a thin film region, and an edge closest thereto; and

a guide positioned relative to the edge for inducing tenting of a moving magnetic recording tape above a tape tenting region of the tape bearing surface, wherein the tenting includes a peak, wherein the tenting at the peak is in a range of about 5 nm to about 50 nm from the tape bearing surface,

wherein the magnetic transducer is positioned along the tape tenting region, wherein the magnetic transducer is positioned between the peak and the edge closest thereto.