US Patent No: 7,215,502
Number of patents in Portfolio can not be more than 2000
Magnetic recording and reproducing apparatus with trapeziodal write pole tip to avoid overwriting adjacent tracks
Stats
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May 8, 2007
Issued date -
May 25, 2005
filing date -
11/136,372
serial no -
In Force
status
Importance
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Abstract
A magnetic recording and reproducing apparatus includes a magnetic head having a main magnetic pole, a magnetic recording medium of a discrete type having a predetermined convex-concave structure at data tracks and servo tracks, and a drive device body that can operate to rotationally drive the magnetic recording medium in a constant direction and cause the magnetic head to be movable in substantially radial directions of the magnetic recording medium. A relationship among parameters specifying a predetermined convex-concave shape of the data track, parameters specifying the main magnetic pole, and a skew angle is defined by a predetermined inequality. By setting a specification of the magnetic recording and reproducing apparatus in the range defined by the inequality, it is possible to prevent unwanted writing into the adjacent track to thereby realize high-density recording having extremely high reliability.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,710,973 Single pole type recording head including tapered edges | 52 | 2001 | |
| 6,813,116 Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same | 22 | 2002 | |
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| 5,995,341 Magnetic disk drive recording a signal with a skew angle | 36 | 1998 | |
| 6,707,643 Perpendicular magnetic recording head having narrow recording gap and perpendicular magnetic recording apparatus using the same | 5 | 2001 | |
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| 2003/0137,680 IMAGE PROCESSING APPARATUS, METHOD OF CONTROLLING SAME, AND IMAGE PROCESSING SYSTEM | 1998 | ||
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| 2002/0182,443 Substrate for perpendicular magnetic recording medium, perpendicular magnetic recording medium using the substrate, and method of manufacturing | 9 | 2002 | |
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| 6,504,675 Perpendicular magnetic recording heads with write pole shaped to reduce skew effects during writing | 129 | 2001 | |
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| 6,952,325 Thin film magnetic head and method of manufacturing the same | 31 | 2002 | |
Patent Citation Ranking
Maintenance Fees
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