Claims
- 1. A recording-reproducing magnetic head comprising a magnetoresistance effect reproducing head and an inductive recording head;said magnetoresistance effect reproducing head including a magnetoresistance effect element; said inductive recording head including a lower magnetic core, an upper magnetic core, coils sandwiched between said lower and upper magnetic cores at mid-parts thereof, and a recording magnetic gap layer sandwiched between said lower and upper magnetic cores at leading end parts thereof; said leading end parts of said lower and upper magnetic cores having a protruding part protruding to said recording magnetic gap layer; wherein said leading end part of said lower magnetic core further has a second protruding part protruding toward said magnetoresistance effect element; said upper magnetic core having a continuous magnetic body which extends from said protruding part to said mid-part; and a center line of said protruding part of said lower magnetic core, which extends in a track length direction on a surface opposite a medium, intersecting said protruding part of said upper magnetic core.
- 2. The recording-reproducing magnetic head according to claim 1, wherein said magnetoresistance effect reproducing head further includes a lower shield layer, a lower magnetic gap-forming layer between said lower shield layer and said magnetoresistance effect element, an upper magnetic gap-forming layer on said magnetoresistance effect element and an upper shield layer on said upper magnetic gap-forming layer;said second protruding part protruding so as to contact said upper magnetic gap-forming layer.
- 3. A recording-reproducing magnetic head comprising a magnetoresistance effect reproducing head and an inductive recording head;said magnetoresistance effect reproducing head including a lower shield layer, a lower magnetic gap-forming layer provided on said lower shield layer, a magnetoresistance effect element provided on said lower magnetic gap-forming layer, an upper magnetic gap-forming layer provided on said magnetoresistance effect element and an upper shield layer provided on said upper magnetic gap-forming layer; said upper shield layer having a protruding part protruding so as to contact said upper magnetic gap-forming layer; said inductive recording head including a lower magnetic core, an upper magnetic core, coils sandwiched between said lower and upper magnetic cores at mid-parts thereof, and a recording magnetic gap layer sandwiched between said lower and upper magnetic cores at leading end parts thereof; said leading end parts of said lower and upper magnetic cores having a protruding part protruding to said recording magnetic gap layer; and a center line of said protruding part of said lower magnetic core, which extends in a track length direction on a surface opposite a medium, intersecting said protruding part of said upper magnetic core and said protruding part of said upper shield layer.
- 4. The recording-reproducing magnetic head according to claim 3, wherein said protruding parts of said lower and upper magnetic cores have converging cross sections such that a width of each of the cross sections in a track width direction decreases toward said recording magnetic gap layer.
- 5. The recording-reproducing magnetic head according to claim 3, wherein said recording magnetic gap layer has a flattened surface which is in contact with said protruding part of said lower magnetic core.
- 6. The recording-reproducing magnetic head according to claim 3, wherein said inductive recording head further includes an insulating layer with a trench, said protruding part of said upper magnetic core being formed in said trench.
- 7. A recording-reproducing magnetic head comprising a magnetoresistance effect reproducing head and an inductive recording head;said magnetoresistance effect reproducing head including a magnetoresistance effect element; said inductive recording head including a lower magnetic core, an upper magnetic core, coils sandwiched between said lower and upper magnetic cores at mid-parts thereof, and a recording magnetic gap layer sandwiched between said lower and upper magnetic cores at leading end parts thereof; said leading end parts of said lower and upper magnetic cores having a protruding part protruding to said recording magnetic gap layer; wherein said protruding parts of said lower and upper magnetic cores have converging cross sections such that a width of each of the cross sections in a track width direction decreases toward said recording magnetic gap layer; wherein said leading end part of said lower magnetic core further has a second protruding part protruding toward said magnetoresistance effect element; said upper magnetic core having a continuous magnetic body which extends from said protruding part to said mid-part; and a center line of said protruding part of said lower magnetic core, which extends in a track length direction on a surface opposite a medium, intersecting said protruding part of said upper magnetic core.
Priority Claims (2)
Number |
Date |
Country |
Kind |
P5-242570 |
Sep 1993 |
JP |
|
P6-044426 |
Mar 1994 |
JP |
|
Parent Case Info
This application is a continuation of application Ser. No. 09/358,465, filed Jul. 22, 1999, now U.S. Pat. No. 6,056,996, issued May 2, 2000, which is a division of application Ser. No. 08/780,328, filed Jan. 8, 1997 now U.S. Pat. No. 6,115,216, issued Sep. 5, 2000, which is a division of Ser. No. 08/314,508, filed Sept. 28, 1994, now U.S. Pat. No. 5,633,771, issued May 27, 1997.
US Referenced Citations (12)
Foreign Referenced Citations (5)
Number |
Date |
Country |
55-4727 |
Jan 1980 |
JP |
61-248212 |
Nov 1986 |
JP |
2-208812 |
Aug 1990 |
JP |
3-205607 |
Sep 1991 |
JP |
3-296907 |
Dec 1991 |
JP |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09/358465 |
Jul 1999 |
US |
Child |
09/520633 |
|
US |