Thin film magnetic head, magnetic head device and magnetic recording/reproducing device
AssigneeTDK Corporation
InventorNoboru Yamanaka
Life of this patent
Estimating the term…
Abstract
A first magnetic film includes a first pole piece, and a second magnetic film includes a second magnetic piece. A gap film is disposed between the first pole piece and the second pole piece. The first magnetic film and the second magnetic film are magnetically joined with each other at a joint as viewed backward from the first pole chip and the second pole chip. A coil film winds vertically around the joint. Third magnetic films are disposed at both sides of the first pole piece or the second pole piece by a given distance.
Claims21
A thin film magnetic head comprising at least one writing element,
- said writing element including a first magnetic film, a second magnetic film, a gap film, a coil film and third magnetic films,
- said first magnetic film including a first pole piece,
- said second magnetic film including a second pole piece,
- said gap film being located between said first pole piece and said second pole piece,
- said first magnetic film and said second magnetic film being magnetically combined at a joint as viewed backward from said first pole piece and said second pole piece,
- said coil film winding vertically around said joint, and
- said third magnetic films being disposed at both sides of said first pole piece or said second pole piece by a given distance,
- wherein said third magnetic films are disposed between a medium opposing surface of the thin film magnetic head and an outermost coil turn of said coil film, and said distance is set within 1.5–6 μm.
A thin film magnetic head comprising at least one writing element,
- said writing element including a first magnetic film, a second magnetic film, a gap film, a coil film and third magnetic films,
- said first magnetic film including a first pole piece,
- said second magnetic film including a second pole piece,
- said gap film being located between said first pole piece and said second pole piece,
- said first magnetic film and said second magnetic film being magnetically combined at a joint as viewed backward from said first pole piece and said second pole piece,
- said coil film winding vertically around said joint,
- said third magnetic films being disposed at both sides of said first pole piece or said second pole piece by a given distance, wherein said third magnetic films are so disposed as to cover said coil film.
Dependencies are inferred from the claim text.