1. Perpendicular magnetic recording head with soft underlayer biasing

2. Magnetic recording carriers, Acoustic and optical discs, Compact discs (audio-video), Floppy-disks

3. • BASF replaces cellulose acetate tape with polyvinyl chloride (PVC) tape for magnetic recording.

4. It is excellent in abrasion resistance and particularly useful as a magnetic recording medium.

5. Magnetic recording carriers, Acoustic and optical discs, Detectors, Diagnostic apparatus, not for medical purposes

6. A process for manufacturing a glass substrate for a magnetic recording medium comprising polishing a crystallized glass substrate using abrasive grains, and then washing the substrate using an aqueous organic carboxylic acid solution; a glass substrate for a magnetic recording medium which is manufactured by the process; and a magnetic recording medium obtained using the substrate.

7. In 1949, the company developed magnetic recording tape and in 1950, sold the first tape recorder in Japan.

8. Sendust is harder than permalloy, and is thus useful in abrasive wear applications such as magnetic recording heads.

9. Abrasive composition for the base of magnetic recording medium and process for producing the base by using the same

10. The properties of E.M.I., Agfa Type F, Tolana (cellophane base),Anorgana Type L and Scotch Type III magnetic recording tapes.

11. It is known that the Acicular maghemite particles have superb magnetic properties, so that they have widely been used as a magnetic recording material in industry

12. The abrasive cloth is suitably used for substrate texture processing in producing a magnetic recording medium, especially a hard disk, permits high-precision surface finishing, and has an excellent strength.

13. Apparatus for recording, storage and reproduction of sound (music and speech) and images, acoustically actuated control and regulating equipment and apparatus for sound and image recording, storage and reproduction apparatus, magnetic recording and storage elements, and semiconductor storage and recording elements

14. Magnetic recording carriers,Light control apparatus, Videotapes, Video cameras, Magnetic cards, Identity cards, magnetic, Video cassettes, Acoustic conduits, Video displays, Transmitters of electronic signals, Loudspeakers, Video intercom apparatus,Wireless video intercoms, portable video intercoms, hands free video intercoms, radio control (devices for -), telecontrol, Central processing units (processors), all these products being used in the field of home security and domectic comfort

15. Described are tape-type magnetic recording media (I) including a non-magnetic substrate (III), at least one film applied to the substrate and, in at least one of these films, an inorganic acicular pigment (II) suitable for use as a supporting pigment, the ratio of the mean length to the mean diameter of the pigment (II) being at least 3 and the mean modulus of elasticity of the films being not less than 15 GPa in the longitudinal direction of the tape-type recording medium (I).

16. Powder for sublayer of coating type magnetic recording medium, comprising flat acicular iron oxide particles of 20 to 200 nm average major axis length, wherein a minor axis cross section made in the direction perpendicular to the major axis has a long width and a short width, the minor axis cross section ratio of long width to short width being larger than 1.3 substantially uniformly in the direction of major axis, which powder exhibits a specific surface area, measured by the BET method, of 30 to 100 m2/g.