Method of forming magnetic recording head having protected reader sensors and near zero recession writer poles

Patent metadata

Field	Value
Publication number	US-10199058-B2
Application number	US-201615133192-A
Country	US
Kind code	B2
Filing date	Apr 19, 2016
Priority date	Aug 31, 2012
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

A method according to one embodiment includes recessing a portion of a media facing side of a module, the module having first and second transducers of different magnetic transducer types positioned towards the media facing side of the module, wherein the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers; wherein the recess is positioned towards one of the first transducers, wherein the recess forms a first protection structure for protecting the first transducer; and wherein the second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure.

First claim

What is claimed is:

1. A method, comprising:
recessing a portion of a media facing side of a tape head module, the module having first and second transducers of different magnetic transducer types positioned towards the media facing side of the module, wherein the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers;
wherein the recess is positioned towards the first transducer,
wherein the recess is filled with a layer, thereby forming a first protection structure for protecting the first transducer; and
wherein the second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure.

2. The method as recited in claim 1 , comprising applying a coating to the recessed portion of the media facing side of the module, thereby forming at least another portion of the first protection structure.

3. The method as recited in claim 1 , wherein the first protection structure includes a coating on the media facing side of the module adjacent the first transducer.

4. The method as recited in claim 3 , wherein the second protection structure is present and includes a coating on another portion of the media facing side that is adjacent the second transducer.

5. The method as recited in claim 1 , wherein the first protection structure is a recessed portion of the media facing side adjacent the first transducer.

6. The method as recited in claim 5 , wherein the first protection structure includes a coating on the recessed portion of the media facing side adjacent the first transducer.

7. The method as recited in claim 5 , wherein the second protection structure is present and includes a coating on another portion of the media facing side that is adjacent the second transducer.

8. The method as recited in claim 1 , wherein the first protection structure includes a recessed portion of the media facing side adjacent the first transducer, wherein the second protection structure is present and includes a recessed portion of the media facing side adjacent the second transducer, wherein an extent of recession of the recessed portion of the media facing side adjacent the second transducer is not as great as an extent of recession of the recessed portion of the media facing side adjacent the first transducer.

9. The method as recited in claim 1 , wherein the first transducer is a servo reader.

10. A method, comprising:
recessing a portion of a media facing side of a module, the module having first and second transducers of different magnetic transducer types positioned towards the media facing side of the module, wherein the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers;
wherein the recess is positioned towards one of the first transducers,
wherein the recess is filled with a layer, thereby forming a first protection structure for protecting the first transducer; and
wherein the second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure,
wherein at least one of the first and the second transducers are present in an array extending along the media facing side of the module.

11. The method as recited in claim 10 , comprising applying a coating to the recessed portion of the media facing side of the module, thereby forming at least another portion of the first protection structure.

12. The method as recited in claim 10 , wherein the first protection structure includes a coating on the media facing side of the module adjacent the first transducer.

13. The method as recited in claim 10 , wherein the first protection structure is a recessed portion of the media facing side adjacent the first transducer.

14. The method as recited in claim 10 , wherein the first protection structure includes a recessed portion of the media facing side adjacent the first transducer, wherein the second protection structure is present and includes a recessed portion of the media facing side adjacent the second transducer, wherein an extent of recession of the recessed portion of the media facing side adjacent the second transducer is not as great as an extent of recession of the recessed portion of the media facing side adjacent the first transducer.

15. A method, comprising:
recessing a portion of a media facing side of a module of a magnetic head, the module having first and second transducers of different magnetic transducer types positioned towards the media facing side of the module, wherein the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers;
wherein the recess is positioned towards one of the first transducers,
wherein the recess forms a first protection structure for protecting the first transducer; and
wherein the second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure,
wherein the magnetic head includes a second module having a configuration similar or identical to the module, the magnetic head being configured to operate with tape media.

16. The method as recited in claim 15 , comprising applying a coating to the recessed portion of the media facing side of the module, thereby forming at least another portion of the first protection structure.

17. The method as recited in claim 15 , wherein the first protection structure includes a coating on the media facing side of the module adjacent the first transducer.

18. The method as recited in claim 15 , wherein the first protection structure is a recessed portion of the media facing side adjacent the first transducer.

19. The method as recited in claim 15 , wherein the first protection structure includes a recessed portion of the media facing side adjacent the first transducer, wherein the second protection structure is present and includes a recessed portion of the media facing side adjacent the second transducer, wherein an extent of recession of the recessed portion of the media facing side adjacent the second transducer is not as great as an extent of recession of the recessed portion of the media facing side adjacent the first transducer.

Assignees

• IBM

Inventors

• Biskeborn Robert G
• Czarnecki W Stanley
• Herget Philipp
• Lo Calvin S

Classifications

• G11B5/4893

  relative to moving tape · CPC title

• G11B5/3106

  where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination (G11B5/3133 takes precedence) · CPC title

• G11B5/00821 Primary

  using stationary heads · CPC title

• Y10T29/49021

  Magnetic recording reproducing transducer [e.g., tape head, core, etc.] · CPC title

• G11B5/187

  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 title