Claims
- 1. A magnetic disk device for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface, the magnetic disk device comprising:
- an arm disposed at a distance from the magnetic disk surface;
- a magnetic head support, the magnetic head support including a flexible member cantilevered to the arm, the flexible member having a first end attached to the arm and having a second end extending toward the magnetic disk surface; and
- at least one magnetic head disposed at the second end of the flexible member, the at least one magnetic head including
- a core having a gap, the gap being disposed at a surface of the flexible member facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on a surface of the flexible member facing away from the magnetic disk surface.
- 2. A magnetic disk device according to claim 1, wherein the flexible member has rigidity in a direction parallel to the magnetic disk surface and flexibility in a direction non-parallel to the magnetic disk surface over an area of the flexible member extending from the first end of the flexible member to the second end of the flexible member.
- 3. A magnetic disk device according to claim 1, wherein a plurality of magnetic heads are disposed at the second end of the flexible member such that the magnetic heads are arranged along a line substantially parallel to the magnetic disk surface.
- 4. A magnetic disk device according to claim 1, wherein a portion of the surface of the flexible member facing toward the magnetic disk surface is in sliding contact with the magnetic disk surface during relative movement between the flexible member and the magnetic disk surface; and
- wherein the magnetic disk device further comprises one of a lubricant and a wear-resistant material disposed on the portion of the surface of the flexible member facing toward the magnetic disk surface.
- 5. A magnetic disk device according to claim 1, further comprising an amplification circuit for amplifying signals from the at least one magnetic head, the amplification circuit being disposed on the surface of the flexible member facing away from the magnetic disk surface;
- wherein the flexible member is a single unitary flexible member made of a silicon compound.
- 6. A magnetic disk device according to claim 1, further comprising:
- an actuator for rotating the arm so as to apply a force to the magnetic head support, thereby causing the at least one magnetic head to move toward or away from the magnetic disk surface;
- detecting means for detecting one of (1) contact between the at least one magnetic head and the magnetic disk surface and (2) a flying height of the at least one magnetic head above the magnetic disk surface, based on an output signal of the at least one magnetic head produced when the at least one magnetic head reads information from the magnetic disk surface, and for producing a detection signal indicative of the detecting; and
- means for driving the actuator in response to the detection signal to control the force applied to the magnetic head support.
- 7. A magnetic disk-device according to claim 1, wherein the magnetic head support further includes a piezoelectric element for flexing the flexible member toward or away from the magnetic disk surface.
- 8. A magnetic disk device according to claim 1, further comprising a sealed case having the magnetic disk, the arm, the magnetic head support, and the at least one magnetic head disposed therein.
- 9. A magnetic disk device for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface, the magnetic disk device comprising:
- an arm disposed at a distance from the magnetic disk surface;
- a first magnetic head support, the first magnetic head support including a first flexible member cantilevered to the arm, the first flexible member having a first end attached to the arm and having a second end extending toward the magnetic disk surface;
- a plurality of independent second magnetic head supports, each of the second magnetic head supports including a second flexible member, the second flexible member having a first end attached to the second end of the first flexible member and a second end extending toward the magnetic disk surface; and
- a plurality of magnetic heads, the magnetic heads being disposed on the second magnetic head supports such that at least one magnetic head is disposed at the second end of each second flexible member, each of the magnetic heads including
- a core having a gap, the gap being disposed at a surface of a respective second flexible member facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on a surface of the respective second flexible member facing away from the magnetic disk surface.
- 10. A magnetic disk device according to claim 9, wherein the first flexible member and each second flexible member have rigidity in a direction parallel to the magnetic disk surface and flexibility in a direction non-parallel to the magnetic disk surface over an area of the flexible member extending from the first end of the flexible member to the second end of the flexible member.
- 11. A magnetic disk device according to claim 9, wherein the magnetic heads are disposed on the second magnetic head supports such that a plurality of magnetic heads are disposed at the second end of each second flexible member and such that all of the magnetic heads are arranged along a line substantially parallel to the magnetic disk surface.
- 12. A magnetic disk device according to claim 9, wherein a portion of the surface of each second flexible member facing toward the magnetic disk surface is in sliding contact with the magnetic disk surface during relative movement between each second flexible member and the magnetic disk surface; and
- wherein the magnetic disk device further comprises one of a lubricant and a wear-resistant material disposed on the portion of the surface of each second flexible member facing toward the magnetic disk surface.
- 13. A magnetic disk device according to claim 9, further comprising a plurality of amplification circuits for amplifying signals from respective ones of the magnetic heads, each of the amplification circuits being disposed on the surface of a respective second flexible member facing away from the magnetic disk surface;
- wherein the first flexible member and each second flexible member are part of a single unitary flexible member made of a silicon compound.
- 14. A magnetic disk device according to claim 9, further comprising an actuator for rotating the arm so as to cause the magnetic heads to move toward or away from the magnetic disk surface.
- 15. A magnetic disk device according to claim 9, wherein the first magnetic head support further includes a piezoelectric element for flexing the first flexible member toward or away from the magnetic disk surface.
- 16. A magnetic disk device according to claim 9, wherein each of the second magnetic head supports further includes a piezoelectric element disposed between the first flexible member and the second flexible member for flexing the second flexible member toward or away from the magnetic disk surface.
- 17. A magnetic disk device according to claim 9, further comprising:
- an actuator for rotating the arm so as to apply a force to the first magnetic head support, thereby causing the magnetic heads to move toward or away from the magnetic disk surface;
- detecting means for detecting one of (1) contact between the magnetic heads and the magnetic disk surface and (2) a flying height of the magnetic heads above the magnetic disk surface, based on output signals of the magnetic heads produced when the magnetic heads read information from the magnetic disk surface, and for producing a detection signal indicative of the detecting; and
- means for driving the actuator in response to the detection signal to control the force applied to the first magnetic head support.
- 18. A magnetic disk device according to claim 9, further comprising a sealed case having the magnetic disk, the arm, the first magnetic head support, the second magnetic head supports, and the magnetic heads disposed therein.
- 19. A magnetic disk device for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface, the magnetic disk device comprising:
- an arm disposed at a distance from the magnetic disk surface;
- a magnetic head support, the magnetic head support including a flexible member cantilevered to the arm, the flexible member having a first end attached to the arm and having a second end extending toward the magnetic disk surface, the second end having a projection; and
- at least one magnetic head disposed on the projection, the at least one magnetic head including
- a core disposed on a surface of the projection, the core having a gap disposed at an edge of the projection facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on the surface of the projection away from the edge facing toward the magnetic disk surface.
- 20. A magnetic disk device for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface, the magnetic disk device comprising:
- an arm disposed at a distance from the magnetic disk surface;
- a first magnetic head support, the first magnetic head support including a first flexible member cantilevered to the arm, the first flexible member having a first end attached to the arm and having a second end extending toward the magnetic disk surface;
- a plurality of independent second magnetic head supports, each of the second magnetic head supports including a second flexible member, the second flexible member having a first end attached to the second end of the first flexible member and a second end extending toward the magnetic disk surface, the second end having a projection; and
- a plurality of magnetic heads, the magnetic heads being disposed on the second magnetic head supports such that at least one magnetic head is disposed on the projection of each second flexible member, each of the magnetic heads including
- a core disposed on a surface of the projection of a respective second flexible member, the core having a gap disposed at an edge of the projection facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on the surface of the projection away from the edge facing toward the magnetic disk surface.
- 21. A magnetic disk device according to any one of claims 1-4, 6-8, or 19, wherein the flexible member is made of at least one material selected from the group consisting of ferrite, ferrite with MnZn added, Al.sub.2 O.sub.3, an alumina-titanium composite, a zirconia-base ceramic, a silicon-base ceramic, diamond-like carbon, diamond, Si, and SiO.sub.2.
- 22. A magnetic disk device according to any one of claims 1-4, 6-8, or 19, wherein the flexible member is made of a material selected from the group consisting of stainless steel, aluminum alloy and copper alloy, a synthetic resin, and a fiber-reinforced synthetic resin.
- 23. A magnetic disk device according to any one of claims 9-12, 14-18, or 20, wherein each flexible member is made of at least one material selected from the group consisting of ferrite, ferrite with MnZn added, Al.sub.2 O.sub.3, an alumina-titanium composite, a zirconia-base ceramic, a silicon-base ceramic, diamond-like carbon, diamond, Si, and SiO.sub.2.
- 24. A magnetic disk device according to any one of claims 9-12, 14-18, or 20, wherein each flexible member is made of a material selected from the group consisting of stainless steel, aluminum alloy and copper alloy, a synthetic resin, and a fiber-reinforced synthetic resin.
- 25. A magnetic head support device for a magnetic disk device, the magnetic disk device being for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface and including at least one magnetic head, the magnetic head support device comprising:
- an arm disposed at a distance from the magnetic disk surface; and
- a magnetic head support, the magnetic head support including a flexible member cantilevered to the arm, the flexible member having a first end attached to the arm and having a second end extending toward the magnetic disk surface;
- wherein when the magnetic head support device is used in the magnetic disk device, the at least one magnetic head is disposed at the second end of the flexible member, the at least one magnetic head including
- a core having a gap, the gap being disposed at a surface of the flexible member facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on a surface of the flexible member facing away from the magnetic disk surface.
- 26. A magnetic head support device for a magnetic disk device, the magnetic disk device being for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface and including at least one magnetic head, the magnetic head support device comprising:
- an arm disposed at a distance from the magnetic disk surface; and
- a magnetic head support, the magnetic head support including a flexible member cantilevered to the arm, the flexible member having a first end attached to the arm and having a second end extending toward the magnetic disk surface, the second end having a projection;
- wherein when the magnetic head support device is used in the magnetic disk device, the at least one magnetic head is disposed on the projection, the at least one magnetic head including
- a core disposed on a surface of the projection, the core having a gap disposed at an edge of the projection facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on the surface of the projection away from the edge facing toward the magnetic disk surface.
- 27. A magnetic head support device according to claim 19 or 26, wherein the flexible member is made of at least one material selected from the group consisting of ferrite, ferrite with MnZn added, Al.sub.2 O.sub.3, an alumina-titanium composite, a zirconia-base ceramic, a silicon-base ceramic, diamond-like carbon, diamond, Si, and SiO.sub.2.
- 28. A magnetic head support device according to either claim 19 or 26, wherein the flexible member is made of a material selected from the group consisting of stainless steel, aluminum alloy and copper alloy, a synthetic resin, and a fiber-reinforced synthetic resin.
- 29. A magnetic head support device for a magnetic disk device, the magnetic disk device being for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface and including a plurality of magnetic heads, the magnetic head support device comprising:
- an arm disposed at a distance from the magnetic disk surface;
- a first magnetic head support, the first magnetic head support including a first flexible member cantilevered to the arm, the first flexible member having a first end attached to the arm and having a second end extending toward the magnetic disk surface; and
- a plurality of independent second magnetic head supports, each of the second magnetic head supports including a second flexible member, the second flexible member having a first end attached to the second end of the first flexible member and a second end extending toward the magnetic disk surface;
- wherein when the magnetic head support device is used in the magnetic disk device, the magnetic heads are disposed on the second magnetic head supports such that at least one magnetic head is disposed at the second end of each second flexible member, each of the magnetic heads including
- a core having a gap, the gap being disposed at a surface of a respective second flexible member facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on a surface of the respective second flexible member facing away from the magnetic disk surface.
- 30. A magnetic head support device for a magnetic disk device, the magnetic disk device being for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface and including a plurality of magnetic heads, the magnetic head support device comprising:
- an arm disposed at a distance from the magnetic disk surface;
- a first magnetic head support, the first magnetic head support including a first flexible member cantilevered to the arm, the first flexible member having a first end attached to the arm and having a second end extending toward the magnetic disk surface; and
- a plurality of independent second magnetic head supports, each of the second magnetic head supports including a second flexible member, the second flexible member having a first end attached to the second end of the first flexible member and a second end extending toward the magnetic disk surface, the second end having a projection;
- wherein when the magnetic head support device is used in the magnetic disk device, the magnetic heads are disposed on the second magnetic head supports such that at least one magnetic head is disposed on the projection of each second flexible member, each of the magnetic heads including
- a core disposed on a surface of the projection of a respective second flexible member, the core having a gap disposed at an edge of the projection facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on the surface of the projection away from the edge facing toward the magnetic disk surface.
- 31. A magnetic head support device according to claim 29 or 30, wherein each flexible member is made of at least one material selected from the group consisting of ferrite, ferrite with MnZn added, Al.sub.2 O.sub.3, an alumina-titanium composite, a zirconia-base ceramic, a silicon-base ceramic, diamond-like carbon, diamond, Si, and SiO.sub.2.
- 32. A magnetic head support device according to claim 29 or 30, wherein each flexible member is made of a material selected from the group consisting of stainless steel, aluminum alloy and copper alloy, a synthetic resin, and a fiber-reinforced synthetic resin.
- 33. A magnetic head support member for a magnetic disk device, the magnetic disk device being for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface and including an arm disposed at a distance from the magnetic disk surface and at least one magnetic head, the magnetic head support member comprising:
- a magnetic head support including a flexible member having a first end and a second end;
- wherein when the magnetic head support member is used in the magnetic disk device, the flexible member is cantilevered to the arm such that the first end of the flexible member is attached to the arm and the second end of the flexible member extends toward the magnetic disk surface, and the at least one magnetic head is disposed at the second end of the flexible member, the at least one magnetic head including
- a core having a gap, the gap being disposed at a surface of the flexible member facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on a surface of the flexible member facing away from the magnetic disk surface.
- 34. A magnetic head support member for a magnetic disk device, the magnetic disk device being for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface and including an arm disposed at a distance from the magnetic disk surface and at least one magnetic head, the magnetic head support member comprising:
- a magnetic head support including a flexible member having a first end and a second end, the second end having a projection;
- wherein when the magnetic head support member is used in the magnetic disk device, the flexible member is cantilevered to the arm such that the first end of the flexible member is attached to the arm and the second end of the flexible member extends toward the magnetic disk surface, and the at least one magnetic head is disposed on the projection, the at least one magnetic head including
- a core disposed on a surface of the projection, the core having a gap disposed at an edge of the projection facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on the surface of the projection away from the edge facing toward the magnetic disk surface.
- 35. A magnetic head support member according to claim 33 or 34, wherein the flexible member is made of at least one material selected from the group consisting of ferrite, ferrite with MnZn added, Al.sub.2 O.sub.3, an alumina-titanium composite, a zirconia-base ceramic, a silicon-base ceramic, diamond-like carbon, diamond, Si, and SiO.sub.2.
- 36. A magnetic head support member according to claim 33 or 34, wherein the flexible member is made of a material selected from the group consisting of stainless steel, aluminum alloy and copper alloy, a synthetic resin, and a fiber-reinforced synthetic resin.
- 37. A magnetic head support member for a magnetic disk device, the magnetic disk device being for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface and including an arm disposed at a distance from the magnetic disk surface and a plurality of magnetic heads, the magnetic head support member comprising:
- a first magnetic head support including a first flexible member having a first end and a second end; and
- a plurality of independent second magnetic head supports, each of the second magnetic head supports including a second flexible member, the second flexible member having a first end attached to the second end of the first flexible member and a second end;
- wherein when the magnetic head support member is used in the magnetic disk device, the first flexible member is cantilevered to the arm such that the first end is attached to the arm and the second end extends toward the magnetic disk surface, the second end of each second flexible member extends toward the magnetic disk surface, and the magnetic heads are disposed on the second magnetic head supports such that at least one magnetic head is disposed at the second end of each second flexible member, each of the magnetic heads including
- a core having a gap, the gap being disposed at a surface of a respective second flexible member facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on a surface of the respective second flexible member facing away from the magnetic disk surface.
- 38. A magnetic head support member for a magnetic disk device, the magnetic disk device being for reading information from a magnetic disk surface of a magnetic disk and for writing information on the magnetic disk surface and including an arm disposed at a distance from the magnetic disk surface and a plurality of magnetic heads, the magnetic head support member comprising:
- a first magnetic head support including a first flexible member having a first end and a second end; and
- a plurality of independent second magnetic head supports, each of the second magnetic head supports including a second flexible member, the second flexible member having a first end attached to the second end of the first flexible member and a second end, the second end having a projection;
- wherein when the magnetic head support member is used in the magnetic disk device, the first flexible member is cantilevered to the arm such that the first end is attached to the arm and the second end extends toward the magnetic disk surface, the second end of each second flexible member extends toward the magnetic disk surface, and the magnetic heads are disposed on the second magnetic head supports such that at least one magnetic head is disposed on the projection of each second flexible member, each of the magnetic heads including
- a core disposed on a surface of the projection of a respective second flexible member, the core having a gap disposed at an edge of the projection facing toward the magnetic disk surface, and
- a coil wound around the core, the coil being disposed on the surface of the respective second flexible member away from the edge facing toward the magnetic disk surface.
- 39. A magnetic head support member according to claim 37 or 38, wherein each flexible member is made of at least one material selected from the group consisting of ferrite, ferrite with MnZn added, Al.sub.2 O.sub.3, an alumina-titanium composite, a zirconia-base ceramic, a silicon-base ceramic, diamond-like carbon, diamond, Si, and SiO.sub.2.
- 40. A magnetic head support member according to claim 37 or 38, wherein each flexible member is made of a material selected from the group consisting of stainless steel, aluminum alloy and copper alloy, a synthetic resin, and a fiber-reinforced synthetic resin.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3-118352 |
May 1991 |
JPX |
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CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation of application Ser. No. 07/888,536 filed on May 26, 1992, now U.S. Pat. No. 5,335,126.
US Referenced Citations (11)
Foreign Referenced Citations (4)
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57-569 |
Jan 1982 |
JPX |
63-306514 |
Dec 1988 |
JPX |
2-226512 |
Sep 1990 |
JPX |
2-227813 |
Sep 1990 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
888536 |
May 1992 |
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