Magnetic recording and reproducing apparatus including a...

Details Magnetic recording and reproducing apparatus including a... Magnetic recording and reproducing apparatus including a...

2011-01-04

2011-01-04

Negrón, Daniell L (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

C360S055000

Reexamination Certificate

active

07864468

ABSTRACT:
The magnetic recording and reproducing apparatus includes: a perpendicular recording magnetic recording medium including a track pattern including track portions and gap portions arranged so as to be alternately adjacent to each other in a cross-track direction, at least part of portions corresponding to the track portions being recording areas having the width substantially the same as the width of the track portions, portions between the recording areas being non-recording areas; and a magnetic head of a perpendicular recording type for applying a recording magnetic field to the recording areas. The anisotropic magnetic field Hk (T) of the recording areas of the magnetic recording medium and the recording magnetic field intensity Fw (t) of the recording magnetic field at the upper surface of the recording areas satisfy the following inequality (I):in-line-formulae description="In-line Formulae" end="lead"?0.23×Fw+1.2≦Hk≦0.26×Fw+1.6.  (I)in-line-formulae description="In-line Formulae" end="tail"?

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