Narrow top pole of a write element
AssigneeSeagate Technology LLC
InventorsCharles H. Tolman, Nurul Amin
Life of this patent
Estimating the term…
Abstract
In a method of manufacturing a top pole of a write element for use in a disc drive storage system, a first trench is formed on a top surface of a bottom pole, the first trench includes a first opening defined by opposing first side walls and an exposed portion of the top surface located therebetween. Next, a second trench is formed within the first trench. The second trench includes a second opening defined by opposing second side walls formed adjacent the first side walls and a gap member formed on the exposed portion of the top surface of the bottom pole between the second side walls. Finally, a top pole is formed in the second opening, which is narrower than the first opening.
Claims15
A write element for use in a head of a disc drive storage system comprising:
- a bottom pole having a top surface;
- a first trench formed on the top surface of the bottom pole having a first opening defined by opposing first side walls and an exposed portion of the top surface located therebetween;
- a second trench formed within the first trench and having a second opening defined by opposing second side walls adjacent the first side walls, and a gap member formed on the exposed portion of the top surface between the second side walls;
- and
- a top pole formed within the second opening.
A write element of a head for use in a disc drive storage system comprising:
- a bottom pole having a top surface;
- a trench means having a narrow opening on the top surface of the bottom pole;
- and
- a top pole formed in the narrow opening.
A write element for use in a head of a disc drive storage system comprising:
- a bottom pole having a top surface;
- a first trench formed on the top surface of the bottom pole having a first opening defined by opposing first side walls and an exposed portion of the top surface located therebetween, the first side walls being formed of an electrically conductive material;
- a second trench formed within the first trench and having a second opening defined by opposing second side walls each electroplated to one of the first side walls, and a gap member electroplated to the exposed portion of the top surface of the bottom pole between the second side walls;
- and
- a top pole formed within the second opening.
Dependencies are inferred from the claim text.