Magnetic head and magnetic disk device including the same

Patent metadata

Field	Value
Publication number	US-10665258-B2
Application number	US-201916266148-A
Country	US
Kind code	B2
Filing date	Feb 4, 2019
Priority date	Sep 13, 2018
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

According to one embodiment, a magnetic head includes a slider with an air bearing surface, and a head element in the slider. The slider includes a leading step at a leading side end of the air bearing surface, a trailing step at a trailing side end of the air bearing surface and including the head element, a deep groove formed between the leading step and the trailing step and opening to the air bearing surface, a center rail extending from a center portion of the air bearing surface to the trailing step, and a pair of pressure generators disposed between the center rail and each side edge.

First claim

What is claimed is:

1. A magnetic head comprising:
a slider comprising an air bearing surface with a pair of side edges, a pair of side surfaces along the pair of side edges of the air bearing surface, a leading side end surface, and a trailing side end surface; and
a head element in the slider, configured to process data, wherein
the slider comprises a leading step at a leading side end of the air bearing surface, a trailing step at a trailing side end of the air bearing surface and including the head element, a deep groove formed between the leading step and the trailing step and opening to the air bearing surface and the pair of side surfaces, a center rail extending from a center portion of the air bearing surface to the trailing step, and a pair of pressure generators disposed between the center rail and each side edge, and
each of the pressure generators comprises an intermediate pad extending from the center rail to the side edge side and bending toward the reading end side of the slider.

2. The magnetic head of claim 1 , wherein a space defined between the intermediate pad and the center rail opens to the leading side of the slider.

3. A magnetic disk device comprising:
a rotatable disk-shaped recording medium; and
the magnetic head of claim 1 configured to process data with respect to the recording medium.

4. The magnetic disk device of claim 3 , wherein a space defined by the intermediate pad and the center rail opens to the leading side of the slider.

5. A magnetic head comprising:
a slider comprising an air bearing surface with a pair of side edges, a pair of side surfaces along the pair of side edges of the air bearing surface, a leading side end surface, and a trailing side end surface; and
a head element in the slider, configured to process data, wherein
the slider comprises a leading step at a leading side end of the air bearing surface, a trailing step at a trailing side end of the air bearing surface and including the head element, a deep groove formed between the leading step and the trailing step and opening to the air bearing surface and the pair of side surfaces, a center rail extending from a center portion of the air bearing surface to the trailing step, an intermediate cross rail extending along the deep groove between the pair of side edges, and a pair of pressure generators disposed between the center rail and each side edge, and
each of the pressure generators comprises an intermediate pad extending from the middle cross rail to the trailing end side of the slider along the center rail.

6. The magnetic head of claim 5 , wherein the intermediate pad includes a pair of first ribs each extending from the intermediate cross rail to the trailing end side of the slider and a second rib connected to the extending ends of the first ribs, and an inner space defined by the first and second ribs opens to the leading side of the slider.

7. A magnetic disk device comprising:
a rotatable disk-shaped recording medium; and
the magnetic head of claim 5 configured to process data with respect to the recording medium.

8. The magnetic disk device of claim 7 , wherein the intermediate pad comprises a pair of first ribs each extending from the intermediate cross rail to the trailing end side of the slider and a second rib connected to the extending ends of the first ribs, and an inner space defined by the first and second ribs opens to the leading side of the slider.

Assignees

• Toshiba Kk
• Toshiba Electronic Devices & Storage Corp

Inventors

• Yamane Masami

Classifications

• G11B5/6082 Primary

  Design of the air bearing surface · CPC title

• G11B5/187 Primary

  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