摘要:
A magnetic head having a substrate, a magnetic core means including a magnetic thin film deposited on one surface of the substrate, and a protective plate formed on the magnetic thin layer in a way that the magnetic thin film is interposed between the protective plate and the substrate. At least a portion of the substrate, or of the protective plate or of the both substrate and protective plate is made by crystallized glass. The crystallized glass is obtained by thermally treating glass containing the following oxides on % by weight basis:SiO.sub.2 : 42.about.52%,ZnO: 5.about.15%,Al.sub.2 O.sub.3 : 28.about.38%,TiO.sub.2 : 5.about.15%,MgO: no more than 10%,PbO: no more than 10%and has a Vickers hardness of from 800 to 1,100 kg/mm.sup.2.
摘要翻译:具有基板的磁头,包括沉积在基板的一个表面上的磁性薄膜的磁芯装置以及形成在磁性薄层上的保护板,以使得磁性薄膜介于保护板和 基质。 基板或保护板或两个基板和保护板的至少一部分由结晶玻璃制成。 通过热处理含有以下氧化物的玻璃,通过热处理结晶玻璃获得:SiO 2:42差异52%,ZnO:5差异15%,Al 2 O 3:28差异38%,TiO 2:5差异15%,MgO:否 超过10%,PbO:不超过10%,维氏硬度为800至1100 kg / mm2。
摘要:
A thin film magnetic head for use with a magnetic recording medium having a direction of movement, includes a substrate and a plurality of magnetic read/write cores disposed on the substrate. At least a part of each core is formed of a magnetic thin film deposited on the substrate. Each of the cores includes a magnetic gap disposed between the magnetic read/write core and the substrate, the magnetic gaps being aligned with each other in the same position relative to the direction of movement of the magnetic recording medium. Each magnetic gap is separated an identical distance from the substrate, and each of the cores has a different width for forming a different width track on the magnetic recording medium.
摘要:
A magnetic field generator includes a base, a plurality of magnetic field generating cores formed on the base, magnetic field generating coils respectively wound around the plurality of magnetic field generating cores, a magnetic material member being disposed between adjacent twos of the plurality of magnetic field generating cores, and a drive device for driving the magnetic field generating coils. Also, a magneto-optical recording apparatus includes an optical head for irradiating a light beam to a magneto-optical recording medium and the magnetic field generator. The magnetic field generator can set the maximum modulation frequency at a higher value while ensuring a scope of the effective vertical magnetic field sufficiently and efficiently, to thereby permit multi-recording.
摘要:
A multi-track magnetic head having at least three conversion elements deposited on a common substrate includes a medium sliding face which is formed in a curved shape. The positions of at least two of the three conversion elements are shifted from each other perpendicularly to the alignment direction of the conversion elements in conformity to the curvature of the medium sliding face.
摘要:
A thin-film magnetic head having a magnetic core formed by a thin-film deposition technique on a substrate formed of crystallized glass which comprises of a mass of microcrystalline aggregation particles having an average particle size of 1 to 10 .mu.m and each comprising of an aggregation of microcrystalline grains having an average grain size of about 0.5 .mu.m or smaller. This structure enables an improvement in the abrasion resistance of the head and, hence, an improvement in the recording/reproduction characteristics while maintaining the desired workability of the substrate, thereby improving the head in producibility and reliability.
摘要:
A housing (20) is formed with pairs of projections (31A, 31B) at opposite sides in a width direction perpendicular to a connecting direction and supporting shafts (29) located between the projections (31A, 31B) at the opposite widthwise sides and behind the projections (31A, 31B) in the connecting direction and adapted to rotatably support a lever (60). The lever (60) is formed with stoppers for preventing a rotation of the lever (60) by being engaged with the projections (31A) on one widthwise side at a connection start position. Further, the lever (60) is formed with pressing portions (72) for correcting a connection posture of the housing (20) by pressing the projections (31B) on the other widthwise side in the connecting direction when the housing (20) is inclined from a proper connection posture with respect to a mating housing (80) in a process reaching a connection position.
摘要:
A lever (40) is rotatable about shafts (19) between a projecting position where side plates (42) project to a large extent from the rear end of a housing (10) and a retracted position where the side plates (42) do not project far the rear end of the housing (10). Projecting pieces (61) project forward on front end edges of the side plates (42) and leading ends of the projecting pieces (61) overlap the rear end of the housing (10) in forward and backward directions at the projecting position. At the projecting position, spaces (63, 64) are formed by the opposite side edges of the projections (61), the front edges of the side plates (42) and the rear end of the housing (10). These spaces include escaping spaces (63) that receive cam followers (85) on the mating housing (80) at the retracted position.
摘要:
A precursor sol of aluminum oxide includes a solvent and particles containing a hydrolysate of an aluminum compound and/or a condensate of the hydrolysate, in which the particles have an average particle size of 2.5 nm to 7 nm. A method for producing an optical member includes the steps of feeding the precursor sol of aluminum oxide described above onto a base to form an aluminum oxide film and immersing the aluminum oxide film in hot water with a temperature of 60° C. to 100° C. to form a textured structure comprising aluminum oxide boehmite.
摘要:
Tanks of a first heat exchanger have plane sections perpendicular to bottoms having a plurality of tube insertion holes formed therein. Tanks of a second heat exchanger with circular cross sections have bottoms having a plurality of tube insertion holes formed therein. The axes of the tube insertion holes of the first and second heat exchangers are held in parallel with each other. The second heat exchanger is in contact with the plane sections of the first heat exchanger tank.
摘要:
Iodopropargylamine compound of the general formula (1): ##STR1## wherein R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, or R.sup.1 and R.sup.2 combine with each other to form a tetramethylene group or a pentamethylene group, R.sup.3 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and X and Y each independently represent a cyano group, an alkoxycarbonyl group having 2 to 7 carbon atoms, an alkylcarbonyl group having 2 to 7 carbon atoms, an alkylsulfonyl group having 1 to 6 carbon atoms, a phenylcarbonyl group or a phenylsulfonyl group, provided that the phenyl group of a phenylcarbonyl group or a phenylsulfonyl group may be optionally substituted by halogen atoms, alkyl groups having 1 to 3 carbon atoms, alkoxy groups having 1 to 3 carbon atoms, nitro groups or trifluoromethyl groups. The compound are useful as the active ingredient for industrial antibacterial and antifungal agents, algicides, and agents for preventing adhesion of organisms.