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US 7,682,653 B1Granted
Magnetic disk with uniform lubricant thickness distribution
AssigneeSeagate Technology LLC
InventorsThuan Luu, Walter Crofton, Bill Liu, David Spaulding, Kwang Kon Kim
Life of this patent
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Abstract
A method for manufacturing a magnetic disk is provided that includes the steps: (a) forming a layer 128 of a lubricant material on a surface of a magnetic storage medium 300, the layer 128 of lubricant material also being located on an interior and/or exterior edge of the medium 300; and (b) removing at least some of the lubricant material from the edge 160 of the medium.
Claims36
A method for manufacturing a magnetic disk, comprising
- (a) forming a layer of a lubricant material on a magnetic storage medium, the layer of lubricant material being located at least on an edge of the medium, wherein the medium is a disk;
- and
- (b) removing at least some of the lubricant material from the edge of the medium, wherein the removing step comprises the sub-steps:
- (b1) positioning a lubricant removal material between a contact assembly and the edge of the medium;
- (b2) the contact assembly applying a force to the edge of the medium, whereby the lubricant removal material is forcibly contacted with the medium edge;
- (b3) rotating the medium during sub-step (b2);
- and
- (b4) moving the lubricant removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium during sub-step (b2).
5 more elements
A disk manufacturing process, comprising:
- (a) providing a magnetic storage medium, the medium being a disk comprising a layer of a first material, the first material being located on an edge of the medium;
- and
- (b) removing at least some of the first material from the edge of the medium, wherein the removing step comprises the sub-steps:
- (b1) positioning a removal material between a contact assembly and the edge of the medium, the removal material being operable to remove the first material;
- (b2) the contact assembly applying a force to the edge of the medium, whereby the removal material is forcibly contacted with the medium edge;
- (b3) rotating the medium during sub-step (b2), wherein the contact assembly comprises a contact pad having a hardness of from about 20 to about 50 durometer, wherein the force exerted on the medium edge provides a pressure ranging from about 5 to about 100 psi, and wherein the medium is rotating in sub-step (b3) at a rate of from about 500 to about 5,000 rpm;
- and
- (b4) moving the removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium during sub-step (b2).
5 more elements
A manufacturing process, comprising:
- (a) providing a planar article, the article being a disk and having an edge and opposing planar surfaces, wherein the article comprises a layer of a first material, the first material being located on the opposing planar surfaces and the edge of the article;
- and
- (b) simultaneously removing at least some of the first material from the opposing planar surfaces and edge of the medium, wherein the simultaneously removing step comprises the sub-steps:
- (b1) positioning a removal material between a contact assembly and the edge of the article, the removal material being operable to remove the first material;
- (b2) the contact assembly applying a force to the edge of the article, whereby the removal material is forcibly contacted with the article edge;
- (b3) rotating the article during sub-step (b2);
- (b4) contacting a solvent with the first material on the edge of the article during sub-step (b2), wherein the solvent is a solvent for the first material;
- and
- (b5) moving the removal material in a direction substantially orthogonal to an opposing planar surface of the article during sub-step (b2).
6 more elements
A method for manufacturing a magnetic disk, comprising
- (a) forming a layer of a lubricant material on a magnetic storage medium, the layer of lubricant material being located at least on an edge of the medium, wherein the medium is a disk;
- and
- (b) removing at least some of the lubricant material from the edge of the medium, wherein the removing step comprises the sub-steps:
- (b1) positioning a lubricant removal material between a contact assembly and the edge of the medium;
- (b2) the contact assembly applying a force to the edge of the medium, whereby the lubricant removal material is forcibly contacted with the medium edge;
- (b3) rotating the medium during sub-step (b2), wherein the contact assembly comprises a contact pad having a hardness of from about 20 to about 50 durometer, wherein the force exerted on the medium edge provides a pressure ranging from about 5 to about 100 psi, and wherein the medium is rotating in step (b3) at a rate of from about 500 to about 5,000 rpm;
- and
- (b4) moving the removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium during sub-step (b2).
5 more elements
A method for manufacturing a magnetic disk, comprising
- (a) forming a layer of a lubricant material on a magnetic storage medium, the layer of lubricant material being located at least on an edge of the medium, wherein the medium is a disk;
- and
- (b) removing at least some of the lubricant material from the edge of the medium, wherein the removing step (b) comprises the sub-steps:
- (b1) positioning a lubricant removal material between a contact assembly and the edge of the medium;
- (b2) the contact assembly applying a force to the edge of the medium, whereby the lubricant removal material is forcibly contacted with the medium edge;
- (b3) rotating the medium during sub-step (b2);
- (b4) contacting a solvent with the lubricant material on the edge of the medium during sub-step (b2);
- and
- (b5) moving the removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium during sub-step (b2).
6 more elements
A method for manufacturing a magnetic disk, comprising
- (a) forming a layer of a lubricant material on a magnetic storage medium, the layer of lubricant material being located at least on an edge of the medium, wherein the medium is a disk;
- and
- (b) removing at least some of the lubricant material from the edge of the medium, wherein the removing step (b) comprises the sub-steps:
- (b1) positioning a lubricant removal material between a contact assembly and the edge of the medium;
- (b2) applying, by the contact assembly, a force to the edge of the medium, whereby the lubricant removal material is forcibly contacted with the medium edge;
- (b3) rotating the medium during sub-step (b2), wherein the contact assembly comprises a deformable contact pad and wherein the pad comprises at least one of rubber, a nitrile polymer, and polyurethane;
- and
- (b4) moving the removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium during sub-step (b2).
5 more elements
A method for manufacturing a magnetic disk, comprising
- (a) forming a layer of a lubricant material on a magnetic storage medium, the layer of lubricant material being located at least on an edge of the medium;
- (b) removing at least some of the lubricant material from the edge of the medium by moving a removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium, wherein the layer of lubricant material is located on at least one of the upper and lower surface of the medium;
- (c) simultaneously with step (b), removing at least a portion of the lubricant material from the at least one of the upper and lower medium surface, wherein a common length of lubricant removal material is used to remove the lubricant material from both the edge and at least one of the upper and lower medium surface.
A disk manufacturing process, comprising:
- (a) providing a magnetic storage medium, the medium being a disk comprising a layer of a first material, the first material being located on an edge of the medium and comprising a lubricant material;
- and
- (b) removing at least some of the first material from the edge of the medium, wherein the removing step comprises the sub-steps:
- (b1) positioning a removal material between a contact assembly and the edge of the medium, the removal material being operable to remove the first material;
- (b2) the contact assembly applying a force to the edge of the medium, whereby the removal material is forcibly contacted with the medium edge;
- (b3) rotating the medium during sub-step (b2);
- and
- (b4) moving the removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium during step (b2).
5 more elements
A disk manufacturing process, comprising:
- (a) providing a magnetic storage medium, the medium being a disk comprising a layer of a first material, the first material being located on an edge of the medium, the first material comprising a lubricant material;
- and
- (b) removing at least some of the first material from the edge of the medium, wherein the removing step comprises the sub-steps:
- (b1) positioning a removal material between a contact assembly and the edge of the medium, the removal material being operable to remove the first material;
- (b2) the contact assembly applying a force to the edge of the medium, whereby the removal material is forcibly contacted with the medium edge;
- (b3) rotating the medium during sub-step (b2);
- (b4) contacting a solvent with the first material on the edge of the medium during step (b2), wherein the solvent is a solvent for the first material, and
- (b5) moving the removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium during sub-step (b2).
5 more elements
A disk manufacturing process, comprising:
- (a) providing a magnetic storage medium, the medium being a disk comprising a layer of a first material, the first material being located on an edge of the medium, the first material comprising a lubricant material;
- and
- (b) removing at least some of the first material from the edge of the medium, wherein the removing step comprises the sub-steps:
- (b1) positioning a removal material between a contact assembly and the edge of the medium, the removal material being operable to remove the first material;
- (b2) the contact assembly applying a force to the edge of the medium, whereby the removal material is forcibly contacted with the medium edge;
- and
- (b3) rotating the medium during sub-step (b2), wherein the contact assembly comprises a deformable contact pad and wherein the pad comprises at least one of rubber, a nitrile polymer, and polyurethane;
- and
- (b4) moving the removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium during sub-step (b2).
6 more elements
A disk manufacturing process, comprising:
- (a) providing a magnetic storage medium, the medium comprising a layer of a first material, the first material being located on an edge of the medium, the first material comprising a lubricant;
- (b) removing at least some of the first material from the edge of the medium by moving a removal material in a direction substantially orthogonal to an upper and/or lower surface of the medium, wherein the layer of first material is located on at least one of the upper and lower surface of the medium;
- and
- (c) simultaneously with step (b), removing at least a portion of the first material from the at least one of the upper and lower medium surface, wherein a common length of removal material is used to remove the first material from both the edge and at least one of the upper and lower medium surface.
1 more element
A manufacturing process, comprising:
- (a) providing a planar article, the article being a disk and having an edge and opposing planar surfaces, wherein the article comprises a layer of a first material, the first material being located on the opposing planar surfaces and the edge of the article, the planar article being a magnetic storage medium, and the first material comprising a lubricant;
- and
- (b) simultaneously removing at least some of the first material from the opposing planar surfaces and edge of the medium, wherein the simultaneously removing step comprises the sub-steps:
- (b1) positioning a removal material between a contact assembly and the edge of the article, the removal material being operable to remove the first material;
- (b2) the contact assembly applying a force to the edge of the article, whereby the removal material is forcibly contacted with the article edge;
- (b3) rotating the article during sub-step (b2);
- and
- (b4) moving the removal material in a direction substantially orthogonal to an upper and/or lower surface of the article during sub-step (b2).
5 more elements
A manufacturing process, comprising:
- (a) providing a planar article, the article being a disk and having an edge and opposing planar surfaces, wherein the article comprises a layer of a first material, the first material being located on the opposing planar surfaces and the edge of the article, the planar article being a magnetic storage medium, and the first material comprising a lubricant;
- and
- (b) simultaneously removing at least some of the first material from the opposing planar surfaces and edge of the medium, wherein the simultaneously removing step (b) comprises the sub-steps:
- (b1) positioning a removal material between a contact assembly and the edge of the article, the removal material being operable to remove the first material;
- (b2) the contact assembly applying a force to the edge of the article and moving a removal material in a direction substantially orthogonal to an opposing planar surface of the article, whereby the removal material is forcibly contacted with the article edge;
- and
- (b3) rotating the article during sub-step (b2), wherein the contact assembly comprises a contact pad having a hardness of from about 20 to about 50 durometer, wherein the force exerted on the article edge provides a pressure ranging from about 5 to about 100 psi, and wherein the article is rotating in step (b3) at a rate of from about 500 to about 5,000 rpm.
4 more elements
A manufacturing process, comprising:
- (a) providing a planar article, the article being a disk and having an edge and opposing planar surfaces, wherein the article comprises a layer of a first material, the first material being located on the opposing planar surfaces and the edge of the article, the planar article being a magnetic storage medium, and the first material comprising a lubricant;
- and
- (b) simultaneously removing at least some of the first material from the opposing planar surfaces and edge of the medium, wherein the simultaneously removing step (b) comprises the sub-steps:
- (b1) positioning a removal material between a contact assembly and the edge of the article, the removal material being operable to remove the first material;
- and
- (b2) the contact assembly applying a force to the edge of the article and moving a removal material in a direction substantially orthogonal to an opposing planar surface of the article, whereby the removal material is forcibly contacted with the article edge, wherein the contact assembly comprises a deformable contact pad and wherein the pad comprises at least one of rubber, a nitrile polymer, and polyurethane.
3 more elements
A manufacturing process, comprising:
- (a) providing a planar article, the article having an edge and opposing planar surfaces, wherein the article comprises a layer of a first material, the first material being located on the opposing planar surfaces and the edge of the article, the planar article being a magnetic storage medium, and the first material comprising a lubricant;
- and
- (b) simultaneously removing at least some of the first material from the opposing planar surfaces and edge of the medium by moving a removal material in a direction substantially orthogonal to an opposing planar surface of the article, wherein a common length of removal material is used to remove the first material from both the edge and at least one of the opposing surfaces.
Dependencies are inferred from the claim text.