Method of forming a magnet/keeper assembly for head level microactuator
AssigneeSeagate Technology LLC
InventorZine-Eddine Boutaghou
Life of this patent
Estimating the term…
Abstract
A method is used for forming a magnet keeper assembly for use in a microactuator. The method comprises forming a keeper from a ferromagnetic material where the keeper has a plurality of notches for accepting a plurality of magnetic materials, securing the magnetic materials in the notches in the keeper, notching the magnetic material and the keeper transversely at a depth approximately equal to the depth of the magnetic material, removing any debris generated during notching, subjecting the keeper to a magnetic field such that the magnetic materials become magnetized, and cutting the keeper into magnet keeper assemblies.
Claims20
A method of forming a magnet/keeper assembly for use in a microactuator, the method comprising:
- forming a keeper from a ferromagnetic material the keeper having a plurality of notches for accepting a plurality of magnetic materials;
- securing a plurality of magnetic materials in the plurality of notches in the keeper;
- notching the magnetic material and the keeper transversely at a depth approximately equal to that of the magnetic material;
- removing any debris generated during notching;
- subjecting the keeper to magnetic field such that the plurality of magnetic materials become magnetized;
- and
- cutting the keeper into magnet/keeper assemblies.
A method for fabricating a magnet/keeper assembly for use in a microactuator used for high resolution positioning of a transducing head over a track of a disc in a dual-actuation disc drive system, the method comprising:
- forming a keeper substrate having a width and a length, with a plurality of notches running the width of the keeper substrate;
- depositing a magnetic material in the notches;
- cutting a plurality of grooves along the length of the keeper substrate, the grooves having a depth approximately equal to a depth of the notches so that the magnetic material in the notches is separated into individual regions;
- magnetizing the magnetic material;
- and
- singulating each magnet/keeper assembly from the keeper substrate.
A method of forming magnet/keeper assemblies for use in microactuators, the method comprising:
- forming a keeper substrate having a plurality of generally parallel notches;
- depositing a magnetic material in the notches;
- forming a plurality of generally parallel grooves in the magnetic material and the keeper substrate which sever the magnetic material into individual regions;
- subjecting the keeper. substrate and the individual regions of the magnetic material to a magnetic field such that the individual regions of magnetic material become magnetized;
- and
- cutting the keeper substrate into magnet/keeper assemblies.
Dependencies are inferred from the claim text.