Dynamic magnetic information storage or retrieval – Head – Core
Patent
1998-02-17
1999-08-03
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Head
Core
G11B 5127
Patent
active
059333006
ABSTRACT:
Recording and/or reproducing device (1) having at least one magnetic head (8, 9) provided for scanning a magnetic record carrier (6) and having a lead-in core limb (34) and a lead-out core limb (35) each consisting of a monocrystalline ferrite and constituting a transducing gap (37), in which the lead-in core limb (34) has a mechanical main direction (39) in a <100>-direction of its monocrystalline ferrite, which main direction encloses an acute angle .THETA..sub.E with respect to the transducing gap (37), and in which the lead-out core limb (35) has a mechanical main direction (41) in a <100>-direction of its monocrystalline ferrite, which main direction encloses a second acute angle .THETA..sub.A with respect to the transducing gap (37), the two acute angles .THETA..sub.E and .THETA..sub.A in the magnetic head (8, 9) being determined in such a way that ferrite material is uniformly worn off the two core limbs (34, 35) at essentially the same wear rate (K) when there is a relative movement between a record carrier (6) and the magnetic head (8, 9).
REFERENCES:
patent: 4731683 (1988-03-01), Otomo
Gaisberger Othmar
Traxlmayr Ulrich
Heinz A. J.
Treacy David R.
U.S. Philips Corporation
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