Method for manufacturing a magnetic tape head using an ink mask formed by printing

Patent metadata

Field	Value
Publication number	US-9053718-B1
Application number	US-201314086923-A
Country	US
Kind code	B1
Filing date	Nov 21, 2013
Priority date	Nov 21, 2013
Publication date	Jun 9, 2015
Grant date	Jun 9, 2015

Abstract

A method for forming a protective overcoat onto a tape bearing surface of a tape head used for magnetic tape recording. In order to ensure optimal surface tension and liftoff properties of the ink mask, the tape bearing surface is treated with a first application of ethanol, followed by an application of polydimethylsiloxane, followed by a second application of ethanol. After this treatment an ink mask can be printed onto the tape bearing surface so as to form a mask having an opening over the location of the magnetic transducer. An etching can then be performed followed by the deposition of a protective coating such as alumina.

First claim

What is claimed is:

1. A method for manufacturing an apparatus for magnetic data recording, comprising:
forming a row bar having a tape bearing surface and having a magnetic transducer formed therein;
applying a first application of ethanol to the tape bearing surface;
applying polydimethylsiloxane to the tape bearing surface;
applying a second application of ethanol to the tape bearing surface; and
printing an ink mask onto the tape bearing surface.

2. The method as in claim 1 , wherein the application of polydimethylsiloxane is performed after the first application of ethanol and before the second application of ethanol.

3. The method as in claim 1 , wherein the ink mask is has an opening located over the magnetic transducer.

4. The method as in claim 3 , further comprising after printing the ink mask, depositing a protective coating.

5. The method as in claim 4 wherein the protective coating comprises alumina.

6. The method as in claim 3 further comprising, after prinking the ink mask, performing an etching to recess the magnetic transducer and then depositing a protective coating.

7. The method as in claim 6 wherein the protective coating comprises alumina.

8. The method as in claim 6 further comprising, after depositing the protective coating, removing the ink mask.

9. The method as in claim 1 , wherein the ink mask is printed with a plurality of layers.

10. The method as in claim 1 , wherein the first application of ethanol, application of polydimethylsiloxane, and second application of ethanol are applied by wiping with a wetted, linen free cloth.

Assignees

• HGST Netherlands BV

Inventors

• Adrong Que
• Hwang Cherngye
• Nguyen Dung T
• Torres Mireles Eduardo

Classifications

• G11B5/40

  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 title

• G11B5/33 Primary

  Structure or manufacture of flux-sensitive heads, {i.e. for reproduction only; Combination of such heads with means for recording or erasing only}({Single head using magnetic domains for scanning G11B5/4946; multiple head for scanning G11B5/4907 and subgroups } ; general details therefor G11B5/133 - G11B5/255) · CPC title

• G11B5/3106 Primary

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

• G11B5/3977

  from different information tracks · CPC title

• G11B5/00826

  comprising a plurality of single poles or gaps or groups thereof operative at the same time · CPC title