公开(公告)号：US3613228A

公开(公告)日：1971-10-19

申请号：US3613228D

申请日：1969-07-02

Applicant: IBM

Inventor： COOK MILES H ,  SECRIST DUANE R ,  TURK HAROLD L

IPC: G11B5/31 ,  G11B5/133 ,  G11B5/17 ,  G11B5/187 ,  G11B5/29 ,  H01F7/06

CPC classification number: G11B5/133 ,  G11B5/17 ,  G11B5/1871 ,  G11B5/29 ,  Y10T29/49048 ,  Y10T29/49055 ,  Y10T29/4906 ,  Y10T29/49787 ,  Y10T156/1069 ,  Y10T156/1075

Abstract: IN THE PROCESS OF BATCH FABRICATION OF MULTIGAP MAGNETIC HEAD ASSEMBLIES, SUCH AS USED IN FIXED HEAD STORAGE FILES, A NONMAGNETIC SUPPORT STRUCTURE IS BONDED TO A MAGNETIC FERRITE BODY TO FACILITATE GRINDING AND POLISHING OF THE FERRITE TO DESIRED DIMENSIONS, WHICH REPRESENT TRACK WIDTH AND SPACING, AND GAP LENGTH AND THROAT HEIGHT, INTER ALIA. CONDUCTORS OR WIRES ARE DISPOSED IN GROOVED PORTIONS OF A MAGNETIC FERRITE BACK STRUCTURE FOR ELECTROMAGNETIC COUPLING WITH THE TRANSDUCING GAPS DISPOSED IN THE FRONT STRUCTURE. BONDING GLASSES HAVING THREE DIFFERENT FLOW TEMPERATURES ARE EMPLOYED FOR JOINING THE PARTS OF THE ASSEMBLY, AND THE COEFFICIENTS OF THERMAL EXPANSION OF THE SEVERAL PARTS MATCH WITHIN A NARROW RANGE.

公开(公告)号：US3610837A

公开(公告)日：1971-10-05

申请号：US3610837D

申请日：1969-01-27

Applicant: IBM

Inventor： BREDE DWIGHT W ,  COOK MILES H ,  FREEMAN MARSHALL E ,  TURK HAROLD L

IPC: G11B5/105 ,  G11B5/133 ,  G11B5/187 ,  G11B5/60 ,  G11B21/21 ,  G11B21/20 ,  G11B5/10 ,  G11B5/42

CPC classification number: G11B5/105 ,  G11B5/1335 ,  G11B5/1871 ,  G11B5/6005

Abstract: An air bearing slider assembly includes a three-piece ceramic body held together by glass bonds and a magnetic head rigidly mounted by glass within a slot in the body and presenting a nonmagnetic gap at an air bearing surface of the body to facilitate noncontact magnetic recording. The body of the slider assembly is made by separately molding the three ceramic pieces, finishing the surfaces on one of the pieces which later support the magnetic head, and heating glass frit between surfaces of the pieces to a fluid to bond them together. Completion of the slider assembly is then accomplished by positioning the head against the supporting surfaces and within a slot in the formed body, filling the slot with a fluid glass composition to bond the head to the body, and finishing an air bearing surface of the body and included nonmagnetic gap of the head.