Back to results
US 6,639,756 B2Granted
Magnetic head having raised element and magnetic head apparatus using the same
AssigneeAlps Electric Co., Ltd.
InventorsJunsei Ueda, Tomoo Otsuka, Hirohisa Ishihara
Life of this patent
Estimating the term…
Abstract
A trailing ABS face, which is a surface generating positive pressure, is formed to rise from a surface facing a recording medium, which is a surface generating negative pressure, toward the recording medium and furthermore, a surface facing the element, in which a gap portion of a magnetic element is located, is formed to rise from the trailing ABS face. Thereby, the floating lift of a magnetic head can be reduced while the floating position can be stabilized and furthermore, collision of the magnetic head with a disk surface can be properly avoided.
Claims64
A magnetic head comprising:
- a slider;
- and
- a magnetic element disposed on an end face of the slider in the trailing side for writing and/or reading,
- wherein a plurality of ABS faces are formed on a surface of the slider facing a recording medium so as to rise toward the recording medium and be at the same level as each other, the plurality of ABS faces serving to generate positive pressure,
- wherein a surface having the element is formed on the ABS face in the trailing side so as to further rise toward the recording medium, and a gap portion of the magnetic element is located on the surface having the element,
- wherein a leading end face of the trailing ABS face and a leading end face of the surface having the element are inclined surfaces that are sloped relative to a depth of the slider and which gradually rise from the surface facing the recording medium toward the surface having the element, and
- wherein when the height from the surface facing the recording medium to the trailing ABS face is h1 and the height from the trailing ABS face to the surface having the element is h2, the ratio h2/h1 is at least 0.4% and 2.5% at most.
4 more elements
A magnetic head comprising:
- a slider;
- and
- a magnetic element disposed on an end face of the slider in the trailing side for writing and/or reading,
- wherein a plurality of ABS faces are formed on a surface of the slider facing a recording medium so as to rise toward the recording medium and be at the same level as each other, the plurality of ABS faces serving to generate positive pressure,
- wherein a surface having the element is formed on the ABS face in the trailing side so as to further rise toward the recording medium, and a gap portion of the magnetic element is located on the surface having the element,
- wherein a leading end face of the trailing ABS face and a leading end face of the surface having the element are inclined surfaces that are sloped relative to a depth of the slider and which gradually rise from the surface facing the recording medium toward the surface having the element, and
- wherein between a leading edge of the trailing ABS face and the surface facing the recording medium, a step face having a height lower than that of the ABS face is formed.
4 more elements
A magnetic head comprising:
- a slider;
- and
- a magnetic element disposed on an end face of the slider in the trailing side for writing and/or reading,
- wherein a plurality of ABS faces are formed on a surface of the slider facing a recording medium so as to rise toward the recording medium and be at the same level as each other, the plurality of ABS faces serving to generate positive pressure,
- wherein a surface having the element is formed on the ABS face in the trailing side so as to further rise toward the recording medium, and a gap portion of the magnetic element is located on the surface having the element,
- wherein a side face of the surface having the element is provided with an angled surface formed thereon which is angled relative to a width direction of the slider and which starts from a trailing edge of the surface having the element and gradually approaches a side face of the slider when proceeding toward the leading side, and wherein a gap portion of the magnetic element is located in the vicinity of the angled surface, and
- wherein when the height from the surface facing the recording medium to the trailing ABS face is h1 and the height from the trailing ABS face to the surface having the element is h2, the ratio h2/h1 is at least 0.4% and 2.5% at most.
4 more elements
A magnetic head comprising:
- a slider;
- and
- a magnetic element disposed on an end face of the slider in the trailing side for writing and/or reading,
- wherein a plurality of ABS faces are formed on a surface of the slider facing a recording medium so as to rise toward the recording medium and be at the same level as each other, the plurality of ABS faces serving to generate positive pressure,
- wherein a surface having the element is formed on the ABS face in the trailing side so as to further rise toward the recording medium, and a gap portion of the magnetic element is located on the surface having the element,
- wherein both side faces of the surface having the element and the trailing ABS face are provided with respective angled surfaces formed thereon which are angled relative to a width direction of the slider and which start from respective trailing edges of the surface having the element and the trailing ABS face and gradually approach a side face of the slider when proceeding toward the leading side, and wherein a gap portion of the magnetic element is located in the vicinity of the angled surfaces, and
- wherein when the height from the surface facing the recording medium to the trailing ABS face is h1 and the height from the trailing ABS face to the surface having the element is h2, the ratio h2/h1 is at least 0.4% and 2.5% at most.
4 more elements
A magnetic head comprising:
- a slider;
- and
- a magnetic element disposed on an end face of the slider in the trailing side for writing and/or reading,
- wherein a plurality of ABS faces are formed on a surface of the slider facing a recording medium so as to rise toward the recording medium and be at the same level as each other, the plurality of ABS faces serving to generate positive pressure,
- wherein a surface having the element is formed on the ABS face in the trailing side so as to further rise toward the recording medium, and a gap portion of the magnetic element is located on the surface having the element,
- wherein a side face of the surface having the element is provided with an angled surface formed thereon which is angled relative to a width direction of the slider and which starts from a trailing edge of the surface having the element and gradually approaches a side face of the slider when proceeding toward the leading side, and wherein a gap portion of the magnetic element is located in the vicinity of the angled surface, and
- wherein two of the angled surfaces are provided so as to have an apex formed at the trailing edge and gradually approach both lateral side-faces of the slider when proceeding toward the leading-side, respectively, and wherein a gap portion of the magnetic element is located at a position sandwiched between the two angled surfaces.
4 more elements
A magnetic head comprising:
- a slider;
- and
- a magnetic element disposed on an end face of the slider in the trailing side for writing and/or reading,
- wherein a plurality of ABS faces are formed on a surface of the slider facing a recording medium so as to rise toward the recording medium and be at the same level as each other, the plurality of ABS faces serving to generate positive pressure,
- wherein a surface having the element is formed on the ABS face in the trailing side so as to further rise toward the recording medium, and a gap portion of the magnetic element is located on the surface having the element,
- wherein a leading end face of the trailing ABS face and a leading end face of the surface having the element are inclined surfaces that are sloped relative to a depth of the slider and which gradually rise from the surface facing the recording medium toward the surface having the element,
- wherein a side face of the surface having the element is provided with an angled surface formed thereon which is angled relative to a width direction of the slider and which starts from a trailing edge of the surface having the element and gradually approaches a side face of the slider when proceeding toward the leading side, and wherein a gap portion of the magnetic element is located in the vicinity of the angled surface, and
- wherein two of the angled surfaces are provided so as to have an apex formed at the trailing edge and gradually approach both lateral side-faces of the slider when proceeding toward the leading-side, respectively, and wherein a gap portion of the magnetic element is located at a position sandwiched between the two angled surfaces.
5 more elements
A magnetic head comprising:
- a slider;
- and
- a magnetic element disposed on an end face of the slider in the trailing side for writing and/or reading,
- wherein a plurality of ABS faces are formed on a surface of the slider facing a recording medium so as to rise toward the recording medium and be at the same level as each other, the plurality of ABS faces serving to generate positive pressure,
- wherein a surface having the element is formed on the ABS face in the trailing side so as to further rise toward the recording medium, and a gap portion of the magnetic element is located on the surface having the element,
- wherein a side face of the surface having the element is provided with an angled surface formed thereon which is angled relative to a width direction of the slider and which starts from a trailing edge of the surface having the element and gradually approaches a side face of the slider when proceeding toward the leading side, and wherein a gap portion of the magnetic element is located in the vicinity of the angled surface, and
- wherein between a leading edge of the trailing ABS face and the surface facing the recording medium, a step face having a height lower than that of the ABS face is formed.
4 more elements
A magnetic head comprising:
- a slider;
- and
- a magnetic element disposed on an end face of the slider in the trailing side for writing and/or reading,
- wherein a plurality of ABS faces are formed on a surface of the slider facing a recording medium so as to rise toward the recording medium and be at the same level as each other, the plurality of ABS faces serving to generate positive pressure,
- wherein a surface having the element is formed on the ABS face in the trailing side so as to further rise toward the recording medium, and a gap portion of the magnetic element is located on the surface having the element,
- wherein both side faces of the surface having the element and the trailing ABS face are provided with respective angled surfaces formed thereon which are angled relative to a width direction of the slider and which start from respective trailing edges of the surface having the element and the trailing ABS face and gradually approach a side face of the slider when proceeding toward the leading side, and wherein a gap portion of the magnetic element is located in the vicinity of the angled surfaces, and
- wherein between a leading edge of the trailing ABS face and the surface facing the recording medium, a step face having a height lower than that of the ABS face is formed.
4 more elements
Dependencies are inferred from the claim text.