# US 2018/0322897 A1 · Head having wrap-controlled flexible media interface

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- Number: US 2018/0322897 A1
- Document ID: US20180322897A1
- Status: Published application
- Kind: A1
- Application number: 16/019,386
- Filed: 2018-06-26
- Published: 2018-11-08
- Earliest claimed: 2016-12-05
- Assignees: International Business Machines Corporation
- Applicants: International Business Machines Corporation
- Inventors: Robert G. Biskeborn; Jason Liang; Calvin S. Lo
- Web page: https://patentgrep.com/patent/US20180322897A1

## CPC

- G11B 5/4893: {relative to moving tape}
- 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})
- G11B 5/00817: {on longitudinal tracks only, e.g. for serpentine format recording}
- 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)
- 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)}
- 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)}
- 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})
- G11B 15/60: Guiding record carrier (guiding devices structurally associated with magazines or cassettes G11B23/04)
- G11B 15/62: Maintaining desired spacing between record carrier and head
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## 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. The magnetic transducer is positioned a distance from a location on the tape bearing surface directly under a peak that is more than one-fourth the length from the location directly under the peak to the edge closest thereto.

## Claims

### Claim 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 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 a peak that is more than one-fourth the length from the location directly under the peak to the edge closest thereto.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 2)

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

### Claim 4 (depends on 1)

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

### Claim 5 (depends on 1)

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

### Claim 6 (depends on 1)

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

### Claim 7 (depends on 1)

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

### Claim 8 (depends on 1)

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

### Claim 9 (depends on 1)

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

### Claim 10 (depends on 1)

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

### Claim 11 (depends on 1)

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

### Claim 12 (depends on 11)

An apparatus as recited in claim 11, wherein the write transducer is not recessed.

### Claim 13 (depends on 1)

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

### Claim 14 (depends on 1)

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.

### Claim 15

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

### Claim 16 (depends on 15)

An apparatus as recited in claim 15, 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.

### Claim 17 (depends on 16)

An apparatus as recited in claim 16, wherein the wrap angle is in a range of about 0.1 to about 1.5 degrees.

### Claim 18 (depends on 15)

An apparatus as recited in claim 15, wherein the tape bearing surface is planar.

### Claim 19 (depends on 15)

An apparatus as recited in claim 15, wherein media facing sides of the magnetic transducers are recessed from the tape bearing surface.

### Claim 20 (depends on 15)

An apparatus as recited in claim 15, comprising a wear coating on the tape bearing surface.

### Claim 21 (depends on 15)

An apparatus as recited in claim 15, further comprising:
a drive mechanism for passing a magnetic medium over the module; and
a controller electrically coupled to the magnetic transducers.

### Claim 22

A method, comprising:
positioning a guide relative to an edge of a module having a tape bearing surface, a magnetic transducer in a thin film region, and an edge closest thereto; and
running a moving magnetic recording tape above the tape bearing surface for inducing tenting of the moving magnetic recording tape above a tape tenting region of the tape bearing surface,
wherein the magnetic transducer is positioned toward an edge of the tape tenting region at about a point of closest approach of the tape and the tape bearing surface.

### Claim 23 (depends on 22)

The method as recited in claim 22, 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.

### Claim 24 (depends on 23)

The method as recited in claim 23, wherein the wrap angle is in a range of about 0.1 to about 1.5 degrees.

### Claim 25 (depends on 22)

The method as recited in claim 22, wherein the magnetic transducer is positioned a distance from a location on the tape bearing surface directly under a peak that is more than one-fourth the length from the location directly under the peak to the edge closest thereto.
