公开(公告)号：JPH0863725A

公开(公告)日：1996-03-08

申请号：JP20323894

申请日：1994-08-29

Applicant: SONY CORP

Inventor： OGATA SEIICHI ,  SUGANO TAKASHI ,  TAKAHASHI HISAMI ,  SATO ATSUSHI

IPC: G11B5/53

Abstract: PURPOSE: To highly accurately position a magnetic gap in a heightwise relative position by providing a spacer on a part of a magnetic head joining part formed on a head base. CONSTITUTION: The magnetic gaps G1 and G2 are formed by combining one pair of magnetic core halves 4A, 4B, 5A and 5B in the magnetic head device 1. Then, the device is equipped with magnetic heads 4 and 5 consisting of coils wound around these magnetic core halves and the head base 3 joined and fixed with the magnetic head joining parts 3A formed on both end parts of one pair of magnetic heads 4 and 5 verging on the magnetic heads 4 and 5 respectively. Then, a part of at least one magnetic head joining part 3A joined and fixed with the magnetic head 4 or 5 of the head base 3 is provided with the spacer 7 for adjusting the position of the magnetic gap G1 or G2 formed in the magnetic head 4 or 5 by changing the thickness of the spacer 7, and the magnetic head 4 or 5 is joined and fixed up via this spacer 7.

公开(公告)号：JPH06338020A

公开(公告)日：1994-12-06

申请号：JP12751493

申请日：1993-05-28

Applicant: SONY CORP

Inventor： SUGANO TAKASHI ,  SAITO TADASHI ,  OGATA SEIICHI ,  IKEDA YOSHITO

IPC: G11B5/127 ,  G11B5/23

Abstract: PURPOSE:To produce a specified gap length with good accuracy, to prevent production of residual stress in a metal magnetic film or the substrate due to welding of the gap, and to obtain good electromagnetic conversion characteristics without decreasing magnetic characteristics. CONSTITUTION:A pair of magnetic core halves 7, 8 each having metal magnetic films 1, 2 at least partly interposed between first substrate 3, 4 and second substrates 5, 6 made of ferrite in the film thickness direction are welded to form the gap in such a manner that the end surfaces of metal magnetic films 1, 2 face to each other. When the gap is formed by welding, pressure P is specified to 2MPa

公开(公告)号：JPH06338019A

公开(公告)日：1994-12-06

申请号：JP12291793

申请日：1993-05-25

Applicant: SONY CORP

Inventor： SUGANO TAKASHI ,  TAKAHASHI HISAMI ,  WATANABE TOSHINOBU ,  TAKAHASHI SHINJI ,  SAITO TADASHI ,  OGATA SEIICHI ,  IKEDA YOSHITO

IPC: G11B5/127 ,  G11B5/187 ,  G11B5/23

Abstract: PURPOSE:To provide a magnetic head suitable for high density magnetic recording capable of reducing adjacent erase and improving a reproducing output. CONSTITUTION:The magnetic head is provided which head is constituted so that a pair of magnetic core semibodies 5, 6 constituted so as to be provided with gap forming surfaces 7, 8 parallel to a magnetic gap (g), first slopes 9, 10 unparallel to the magnetic gap (g) and second slopes 11, 12 on both ends of the magnetic gap forming surfaces 7, 8 are confronted with each other in the gap forming surfaces 7, 8, and the magnetic gap (g) is formed between the gap forming surfaces 7, 8. When the track width of the magnetic gap (g) is defined Tw, an angle thetaS between the first slopes 9, 10 and perpendicular lines of the gap forming surfaces 7, 8, the angle thetaL between the second slope and the perpendicular lines of the gap forming surfaces 11, 12, Tw

公开(公告)号：JPH06325320A

公开(公告)日：1994-11-25

申请号：JP11594093

申请日：1993-05-18

Applicant: SONY CORP

Inventor： SUGANO TAKASHI ,  SAITO TADASHI ,  OGATA SEIICHI ,  IKEDA YOSHITO

IPC: G11B5/127 ,  G11B5/17 ,  G11B5/265

Abstract: PURPOSE:To decrease the crosstalks between chips and to improve reproduced output characteristics by winding windings only on the side cores of respective magnetic head chips arranged to face each other in a head traveling direction. CONSTITUTION:The same base 1 is provided thereon with a pair of magnetic head chips 2, 3 having azimuth angles varying from each other apart a prescribed distance in the head traveling direction X facing each other. The head chips 2, 3 consist of center cores 4, 5 and side cores 6, 7 of oxide magnetic materials, such as ferrite, and are gap-joined, by which magnetic gaps g1, g2 acting as recording and reproducing gaps are formed between the butt surfaces thereof. The magnetic gaps g1, g2 are formed in the directions varying from each other in order to prevent the pickup of the magnetic fluxes leaking from the one head chip by the other head chip. The one-side center cores 4, 5 constituting the closed magnetic path are formed as the bar-shaped magnetic cores of a small thickness.