| 摘要 |
PURPOSE:To perform gap formation with high accuracy by eliminating angular moment being generated in an azimuth core and reducing gap length distribution, by performing groove working on both back planes of a core half body, and pressurizing only a generated projecting part. CONSTITUTION:In the core half bodies 1a and 1b consisting of an amorphous thin film 2, a glass layer 3, a winding groove 4, and a gap plane groove 5, etc., are processed at azimuth of 20 deg., back plane grooves 6a and 6b which pressurize only a substrate which films the amorphous thin film on the back planes of both core half bodies are provided. As a result, it follows that the projecting part being generated by the working of the back plane groove is pressurized, and the angular moment generated by the azimuth can be eliminated, and also, since only an amorphous films substrate is pressurized even when fine movement is generated in a bonding layer, influence on a gap length can be reduced. In other words, it is possible to eliminate the angular moment generated in the azimuth core, and also, pressurization in a direction orthogonal to a pressurizing jig can be obtained, and to perform the gap formation with a few amount of gap length distribution and high accuracy.
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