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Patent Searching and Data


Title:
PRODUCTION OF MAGNETIC CORE
Document Type and Number:
Japanese Patent JPH04251410
Kind Code:
A
Abstract:

PURPOSE: To allow multi-piece production of front cores at one time with simple stages in the process for producing the magnetic core of the structure which consists of the front core and the back core, which front core being constituted of a core for reproduction, a core for recording narrower in track width than this core, and two dummy cores, and in which the dummy cores are joined to the core for writing together with the core for reading via a magnetic gap on both sides of the core for reading.

CONSTITUTION: A 1st core blank material block nearly corresponding to plural pieces of the cores for reproduction which are continuous in a track width direction is formed. Prescribed grooves are formed on this black in the above- mentioned track width direction thereof and 2nd core blank material blocks nearly corresponding to the dummy cares are fixed into the respective grooves. The assembly of the 1st and 2nd blocks and a 3rd core blank material block nearly corresponding to plural pieces of the cores for recording which are continuous in the track width direction are joined via magnetic gaps and the resulted assembly is cut, by which plural pieces of the front cores are obtd.


Inventors:
OKUBO MASANORI
Application Number:
JP1991000000776
Publication Date:
September 07, 1992
Filing Date:
January 09, 1991
Export Citation:
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Assignee:
CANON DENSHI KK
International Classes:
G11B5/127; G11B5/265; (IPC1-7): G11B5/127; G11B5/265