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4246619 Electromagnetic transducer head  
An electromagnetic transducer head for a tape recording and reproducing system comprises a pair of generally U-shaped single crystalline ferrite cores having their first legs secured together and...
4217613 Magnetic transducer head core  
A magnetic transducer head core includes two elements bonded with a non-magnetic medium sandwiched between facing surfaces of the elements. An opening for a flux inducing winding is formed in the...
4204315 Method of producing a magnetic transducer device  
A magnetic transducer and method of operation is disclosed for removing the effect of interference magnetic fields present when detecting information magnetically coded on a carrier. The transducer...
4192985 Method for the production of integrated magnetic head structures  
A method for a definitive fixing of the breadth of magnetic layers in the vicinity of the end face of a recording carrier, which breadth determines the track breadth, in which an integrated...
4188247 Manufacture of magnetic transducing heads  
A process for the manufacture of pole structures for magnetic transducing heads is described in which the configuration of the non-magnetic gaps is formed by abrading the ferrite pole structure...
4186480 Method of manufacturing a rotatable magnetic head arrangement  
A method of manufacturing a rotatable magnetic head arrangement in which at least one magnetic head provided on a disc-shaped carrier in a given position with respect to a reference surface...
4186481 Method for fabrication of rear chip for hall effect magnetic head  
A method for fabricating a rear core for the magnetic circuit of a Hall effect magnetic head is disclosed. The bottom size of the rear core protrusion is made substantially equal to the size of a...
4173065 Method of manufacturing a magnetic head  
A method of manufacturing a magnetic head comprises the steps of forming between a pair of core blocks to be joined together gap holding surfaces arranged relative to a gap forming surface, in the...
4170059 Method of manufacturing a magnetic transducer for narrow track recording and playback  
A transducer core comprises a magnetic core superposed and integrally joined with a supporting composite body. The magnetic core has poles defining at least one nonmagnetic gap therebetween. The...
4160315 Method of making a magnetic head assembly  
In methods of making head assemblies, a ceramic slider having a row of receiving apertures is united with a multiple serial ferrite arch structure shaped in complementary fashion so that successive...
4150479 Method of making magnetic head cores with cant angles  
A method for batch fabricating magnetic heads with a desired cant angle in the transducing surface of the magnetic core. The cant angle reduces the "Minor Bit" phenomenon. The two parts of the core...
4129937 Method of making grounded transducer for magnetic record disks  
A transducer particularly for use with magnetic record disks and composed of cores having transducing gaps therein adapted to contact or be in near contact with a record disk at the gaps and...
4115827 Magnetic transducer for narrow track recording and playback  
A transducer core having a magnetic core defining a non-magnetic gap and being integrally joined with a superposed composite body. The composite body has a nonmagnetic front portion spanning the...
4110902 Method for manufacturing a magnetic head for video signal  
A head chip having a track width of a gap smaller than a thickness of a core enables a high density recording of a video signal. The track width of the gap is machined before a bulk is sliced into...
4106173 Method of manufacturing magnetic heads  
A method of manufacturing a magnetic head comprises the steps of providing a pair of core block pieces each having an abutting area and a gap defining surface which is slightly recessed relative to...
4100584 Transducer head with narrow core structure  
In the manufacture of a transducer head, a plurality of elongated slots are formed in a non-magnetic substrate to receive magnetic cores having a transducing gap. A sealing composition bonds the...
4040174 Method of manufacturing magnetic heads  
A method of manufacturing magnetic heads comprises the steps of providing a pair of core block pieces which are used to form magnetic heads, the core block pieces having gap defining surfaces...
4017966 Method of manufacturing a magnetic head having a relatively large air-gap and a good resistance to mechanical wear  
A method of manufacturing a magnetic head, with a relatively large gap for reading, for instance, magnetic cards, and having a good resistance to mechanical wear, is provided. The head comprises...
4017965 Method of making a transducer head with narrow core structure  
In the manufacture of a transducer head, a plurality of elongated slots are formed in a non-magnetic substrate to receive magnetic cores having a transducing gap. A sealing composition bonds the...
3999286 Method of making multitrack heads  
A multitrack recording head having a pair of ferrite combs whose teeth are separated at their tips by nonmagnetic gap spacers and whose bases are in abutting relationship. Each tooth of one comb...
3983622 Method of manufacturing magnetic record/reproduce head  
Precision-lapped pieces of ceramic and ferrite are stacked together with pieces of ceramic-convertible glass. Firing of the stack causes the glass to devitrify and results in a comb-less track...
3982318 Magnetic transducer head core manufacturing method  
A method for manufacturing a magnetic core for use in data transducing, characterized by having the depth of the shallower flux gap face precisely equal to a predetermined value. The method...
3956771 Magnetic transducer with side mounted ferrite core and method of making the same  
An improved magnetic transducer with side mounted ferrite core for recording and reading of data on a magnetic storage medium. The ferrite core is bonded in a side of a slider. The lower portion of...
3943624 Method of manufacturing a magnetic head  
A method for manufacturing a magnetic head having at least one ferrite pole tip pair. The tips of each pair are separated by non-magnetic gap of a desired length and the method in accordance with...
3928908 Manufacture of magnetic heads  
A method is disclosed in which a pair of electrically non-conducting ferrite pole pieces for use in a magnetic transducing head are assembled together with a non-magnetic separator which defines a...
3927470 Method of making multi track magnetic transducing heads  
Magnetic heads are made in groups by bonding ferrite elements to a non magnetic support to provide an assembly of parallel ferrite elements. The elements are machined to a required form. After...
3925884 Method of manufacturing multi-track magnetic heads  
Multi-track magnetic heads are batch fabricated from strips of ferrite, each having a plurality of windows through which coils are wound. The strips are bonded together with the windows in...
3922776 Method for making narrow track ferrite core flying pads  
A high yield method for manufacturing a narrow precisely defined track width ferrite core flying pad in which a core is bonded to a support piece after which a portion of the core adjacent an air...
3913143 Magnetic head face assembly using chemically machinable glass ceramic bonding means  
Precision-lapped pieces of ceramic and ferrite are stacked together with pieces of ceramic-convertible glass. Firing of the stack causes the glass to devitrify and results in a comb-less track...
3899827 Method of manufacturing pole piece assembly for electromagnetic type pickup  
A method of manufacturing a pole piece assembly for an electromagnetic-type pickup is disclosed. In the method a pole piece unit including a set of pole pieces integrally interconnected with each...
3854199 MANUFACTURE OF MAGNETIC TRANSDUCING HEADS  
A magnetic head production process is described which involves threading apertured laminations on to a centre member to form a bonded stack, machining opposite sides of the stack, bonding a...
3851375 METHOD OF BONDING TOGETHER MOULDINGS OF SINTERED OXIDIC FERROMAGNETIC MATERIAL  
In manufacturing in particular multi-channel magnetic heads, it is usual to place two ferrite blocks on each other with the interposition of spacing members, to cause glass to flow into the...
3846906 METHODS OF MANUFACTURING MAGNETIC TRANSDUCING HEADS  
A method of manufacturing magnetic transducing heads to facilitate testing of individual components of the head is disclosed. A head for digital recording on magnetic discs is made of a slider...
3845550 METHOD OF MANUFACTURING A MAGNETIC HEAD  
A method of constructing transducers is provided wherein a pair of rectangular ferrite blocks are processed to yield a plurality of magnetic heads, each having protective glass pockets formed...
3846840 READ/WRITE AND LONGITUDINAL EDGE ERASE HEAD ASSEMBLY HAVING MULTIPLE SIMILARLY SHAPED LAYERS  
A magnetic head assembly for cooperating with a relatively moving magnetic medium and for reading and/or writing one or several tracks of magnetic information and for erasing the edges and old...
3842494 MULTICHANNEL MAGNETIC FERRITE HEAD AND A METHOD FOR MAKING THE SAME  
A multichannel magnetic head consisting essentially of a plurality of magnetic ferrite heads and a plurality of glass spacers filling the spaces between each pair of adjacent magnetic ferrite heads...
3840984 METHOD OF MAKING A MAGNETIC RECORDING HEAD  
A method for making the core of a magnetic recording or playback head that comprises bending a flat strip of core material into an intermediate product, a W-form, i.e., having at its outer or...
3839784 METHOD FOR FABRICATING MAGNETIC READ-WRITE HEAD ARRAY AND PRODUCT  
A method for fabricating an array of read-write heads for a magnetic storage means, such as a disk or drum, is disclosed. Each head is comprised of a flux carrying means, such as a gapped magnetic...
3824685 METHOD OF MAKING A FERRITE HEAD  
In a method of manufacturing a ferrite magnetic head, a thin layer of glass is sputtered onto one or more discrete portions of a planar surface of each of two ferrite members, at least one of the...
3816908 METHOD OF MAKING A MULTI-CHANNEL MAGNETIC HEAD  
A method of making a multi-channel magnetic head composed of a stack of a plurality of single-turn elementary heads. The method includes the step of defining a hollow for a conductive rod, which...
3810245 SINGLE CRYSTAL FERRITE MAGNETIC HEAD  
A single crystal ferrite material magnetic head for a video tape recorder or other device which is formed with a pair of half-cores with an opening between them for winding and in which the...
3807042 METHOD OF MAKING A MAGNETIC HEAD STRUCTURE  
A magnetic head having a gap plate adhesively bonded to a core structure with a plurality of transducer gaps and inter-gap shields located in an integral construction and a method for making this...
3798758 METHODS OF MAKING A CORE FOR A MAGNETIC RECORDING AND REPRODUCING HEAD WITH NARROW TRACK WIDTH  
A method of making a magnetic recording and reproducing component includes, providing in a ferrite member a plurality of grooves defining side-by-side Vee shaped ridges which are reinforced by...
3766640 METHOD OF MANUFACTURING MAGNETIC TRANSDUCERS  
Magnetic transducing heads capable of reading and writing magnetic information in the form of a pattern of magnetization on a magnetic recording medium are provided utilizing a combination of...
3760494 MAGNETIC HEAD ASSEMBLY  
A method of manufacturing a magnetic head assembly wherein a pair of unitary body members, each made up of a plurality of alternating layers of magnetic material and spacer material, are joined...
3750274 METHOD OF MAKING GLASS BONDED RECORDING HEADS  
Disclosed is a method of fabricating recording heads, or transducers, for an electromagnetic recording device, and the resulting product. In a preferred embodiment, a pair of selectively geometric...
3737993 METHOD OF MAKING A MULTI-CHANNEL MAGNETIC HEAD  
A method of making a multi-channel magnetic head. Two magnetic core members having windings wound thereon are joined to each other on the flat surface of a support plate in order to make an...
3735052 MAGNETIC HEAD ASSEMBLY USING TITANIUM DIOXIDE AND BARIUM TITANATE SLIDER  
A magnetic head assembly includes a glass-gapped ferrite head bonded into a ceramic slider with a glass. The slider is made of a ceramic composition consisting essentially of the reaction product...
3727303 METHOD OF FORMING GAPS FOR SMALL MAGNETIC HEADS  
A small multi-element magnetic recording head reads and writes information on magnetic medium information tracks corresponding to head gaps. The head is a single magnetic strip having a plurality...
3718776 MULTI-TRACK OVERLAPPED-GAP MAGNETIC HEAD, ASSEMBLY  
A magnetic head reads and writes a plurality of information tracks, recorded as magnetization patterns on a magnetic recording medium, with two magnetic sheets mounted in a supporting frame....