A multi-channel dual-gap magnetic head. The head has a plurality of magnetic head tips which are separated magnetically from each other by non-magnetic materials, and each having two magnetic gaps. A plurality of magnetic back cores are connected to said magnetic head tips, and a plurality of windings are wound on the respective back cores. The corresponding magnetic gaps in the head tips are aligned in two straight lines which are parallel to each other and perpendicular to the direction of tape movement of the tape for a recording and reproducing device. The magnetic gaps aligned in one straight line have at least two different gap widths for carrying out different functions from among the functions of recording, playback and erasing.
This application is a continuation of application Ser. No. 205,074, filed Dec. 6, 1971 now abandoned, which in turn is a division of application Ser. No. 16,320, filed Mar. 4, 1970, now U.S. Pat. No. 3,672,044.
A magnetic head for multi-track data recording on magnetic tape is formed of a combination of two head modules, each having a linear array of thin-film transducer elements formed on a substrate, each of these arrays consisting of a mixture of write elements and read elements. These are positioned on the respective head modules such that when the head modules are combined with the substrates mutually opposing, pairs of transducer elements are formed for respective tape tracks, each pair consisting of a read and a write element. "Read-after-write" recording confirmation can thereby be implemented together with bidirectional recording operation, by using only a combination of two head modules.
In a magnetic head having a tape contact face, a non-ferromagnetic unitary housing has a cavity for receiving a coil and has a slot for receiving at least one C-core of the magnetic circuit. The slot extends in a side face of the housing and debouches at one end into the cavity and at the other end into the tape contact face.
An electromagnetic transducer assembly for a helical-scan type video tape recorder comprises a nonmagnetic base, and a pair of magnetic heads secured to the base and successively arranged in spaced relationship with each other in the direction of transport of a magnetic medium, each of the heads comprising a generally U-shaped core having a pair of limb portions and a web portion therebetween, a generally I-shaped core connected to the limb portions to form a closed magnetic circuit having a magnetic gap therein, and a coil wound on the closed magnetic circuit. The I-shaped cores of the heads respectively have arcuately shaped edge portions adjacent the magnetic gaps and opposed to each other across the space between the heads to eliminate the creation of false magnetic gap effect.
In a multichannel head of the type wherein a plurality of transducers scan signal tracks of information across a magnetic tape within a system; and wherein each transducer includes a magnetic core having two pole pieces between which a gap is disposed while at least one turn of a conductor is magnetically coupled to the gap, the plurality of transducers are sequentially bonded together in an integral unit with their gaps disposed at essentially tandem locations.
An electromagnetic transducer assembly for use in a helical-scan type video tape recorder includes a pair of magnetic heads secured to a nonmagnetic base and successively arranged in spaced relationship with each other in the direction of transport of a magnetic medium, each of the heads comprising a generally U-shaped core having a pair of limb portions and a web portion therebetween, a generally I-shaped core connected to the limb portions to form a closed magnetic circuit having a magnetic gap therein, and a coil wound on the closed magnetic circuit, the I-shaped cores of the heads respectively having confronting edges extending unparallel to the magnetic gaps.
