PRODUCTION OF CORE FOR MAGNETIC HEAD

PURPOSE:To produce the title core for a magnetic head having excellent surface precision of the track side wall and high reliability by projecting specified laser light to a site for regulating the track of a gap bar in a gaseous halogen. CONSTITUTION:The site intersecting the magnetic gap 13 of the...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	TAKAI MIKIO, SANDAIJI HIDETO, OHARA SHOJI, NAGATOMO SHOHEI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PHYSICS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To produce the title core for a magnetic head having excellent surface precision of the track side wall and high reliability by projecting specified laser light to a site for regulating the track of a gap bar in a gaseous halogen. CONSTITUTION:The site intersecting the magnetic gap 13 of the gap bar 11 consisting of a ferrite material and regulating the track width is etched by laser induction in the atmosphere contg. a halogen (halide). The halogen atmosphere is kept at 10-200Torr, and the etched site is scanned by the laser beam having 50-1,100mV power and