초록 ▼

A thin film inductive head for use in writing/reading magnetic signals in a magnetic disk drive or a magnetic tape unit, comprises two magnetic cores formed of respective magnetic layers, said two magnetic layers putting conductor coils therebetween in a vertical direction, front end portions thereo

A thin film inductive head for use in writing/reading magnetic signals in a magnetic disk drive or a magnetic tape unit, comprises two magnetic cores formed of respective magnetic layers, said two magnetic layers putting conductor coils therebetween in a vertical direction, front end portions thereof opposing to each other via a gap layer, a part of said front end portion of one magnetic layer having high saturation magnetic flux density rather than a remaining part thereof.

대표청구항 ▼

[ What is claimed is:] [1.] A thin film inductive head comprising:a lower magnetic core formed on an under layer;an insulating layer formed on said lower magnetic core;a conductor coil passing through said insulating layer substantially in parallel with a surface of said lower magnetic core;an upper

[ What is claimed is:] [1.] A thin film inductive head comprising:a lower magnetic core formed on an under layer;an insulating layer formed on said lower magnetic core;a conductor coil passing through said insulating layer substantially in parallel with a surface of said lower magnetic core;an upper magnetic core formed on said insulating layer, and separated from said lower magnetic core at a narrow part of a front end portion, and contacting said lower magnetic core at a region away from said front end portion;a gap layer of insulator sandwiched between said lower magnetic core and said narrow part of said upper magnetic core; andfirst high saturated magnetic flux density films formed on both sides of said narrow part of said upper magnetic core, said first high saturated magnetic flux density films having higher saturated magnetic flux density than that of said upper magnetic core.