【図面の簡単な説明】[Brief explanation of the drawing]
第１図は本考案によるギヤツプ構造を持つフロ
ツピー・デイスク駆動装置用磁気ヘツドの、フロ
ツピーデイスクとの接触面の平面図。第２図は第
１図における記録および再生用ギヤツプ部とそこ
から発生する記録磁束の模式図。第３図は本考案
によるギヤツプ構造による磁気ヘツドで記録した
ときフロツピー・デイスク上に残る信号の模式図
。第４図は従来技術によるギヤツプ構造図で、位
置合わせが精度よく行なわれたときの図であり第
５図は従来技術によりギヤツプを形成したときに
位置合わせがずれたときのギヤツプを示した図で
ある。また第６図はギヤツプの貼り合わせ面の端
部に丸みができた状態の図である。
１…コア部材、２…コア部材、３…コア部材、
４…コア部材、５…非磁性材による接合部、６…
記録および再生用ギヤツプ、７…消去用ギヤツプ
、８…コア部材１のギヤツプ貼り合わせ面、９…
コア部材２のギヤツプ貼り合わせ面、１０…記録
磁束を模式的に示す矢印、１１…フロツピー・デ
イスク上に記録された信号、１２…信号の反転間
隔、１３…コア部材、１４…ギヤツプ、１５…コ
ア部材、１６…コア部材１３のギヤツプ貼り合わ
せ面、１７…コア部材１５のギヤツプ貼り合わせ
面、１８…ギヤツプ貼り合わせ面端部の丸み、Ａ
…ギヤツプ貼り合わせ面９の幅、Ｂ…ギヤツプ貼
り合わせ面８の幅、Ｃ，Ｃ′…ギヤツプ貼り合わ
せ面１６，１７の幅、Ｄ…実効的なギヤツプ幅。
FIG. 1 is a plan view of the contact surface with a floppy disk of a magnetic head for a floppy disk drive device having a gap structure according to the present invention. FIG. 2 is a schematic diagram of the recording and reproducing gap portion in FIG. 1 and the recording magnetic flux generated therefrom. FIG. 3 is a schematic diagram of a signal remaining on a floppy disk when recorded by a magnetic head with a gap structure according to the present invention. Figure 4 is a diagram of the gap structure according to the prior art, and is a diagram when the alignment is performed with high accuracy. Figure 5 is a diagram showing the gap when the alignment is deviated when the gap is formed using the prior art. It is. FIG. 6 shows a state in which the edges of the bonded surfaces of the gap are rounded. 1... Core member, 2... Core member, 3... Core member,
4...Core member, 5...Joint part made of non-magnetic material, 6...
Gap for recording and reproduction, 7... Gap for erasing, 8... Gap bonding surface of core member 1, 9...
Gap bonding surface of core member 2, 10... Arrow schematically showing recording magnetic flux, 11... Signal recorded on floppy disk, 12... Signal reversal interval, 13... Core member, 14... Gap, 15... Core member, 16... Gap bonding surface of core member 13, 17... Gap bonding surface of core member 15, 18... Roundness of end of gap bonding surface, A
... Width of gap bonding surface 9, B... Width of gap bonding surface 8, C, C'... Width of gap bonding surfaces 16, 17, D... Effective gap width.