摘要:
A head-slider. The head-slider includes a slider, and a thin-film magnetic-recording head. The thin-film magnetic-recording head includes: a read element; a write element; a non-magnetic insulating protective layer disposed around both read and write elements; a resist disposed at a position further away from an air-bearing surface than the read element; and, a hard-material member including a material selected from the group consisting of silicon carbide and tungsten, which is disposed at a position further away from the air-bearing surface than the read element and the write element. Both an end of the resist and an end of the hard-material member overlap the write element when viewed in a stacking direction. A ratio of a distance from the air-bearing surface to a deepest end of the hard-material member to a distance from the air-bearing surface to a deepest end of the resist is at least 0.9.
摘要:
A head-slider. The head-slider includes a slider, and a thin-film magnetic-recording head. The thin-film magnetic-recording head includes: a read element; a write element; a non-magnetic insulating protective layer disposed around both read and write elements; a resist disposed at a position further away from an air-bearing surface than the read element; and, a hard-material member including a material selected from the group consisting of silicon carbide and tungsten, which is disposed at a position further away from the air-bearing surface than the read element and the write element. Both an end of the resist and an end of the hard-material member overlap the write element when viewed in a stacking direction. A ratio of a distance from the air-bearing surface to a deepest end of the hard-material member to a distance from the air-bearing surface to a deepest end of the resist is at least 0.9.
摘要:
A thin-film magnetic head includes an MR element serving as a reproducing element and a recording induction coil. The MR element is disposed between a lower magnetic pole and an intermediate magnetic pole. The recording induction coil is disposed between the intermediate magnetic pole and an upper magnetic pole. At least a portion of the upper magnetic pole in the vicinity of a recording gap is formed of a material having a high saturation magnetic flux density of 1.4 T or higher. The intermediate magnetic pole is formed of a material having a high resistivity of 80 .mu..OMEGA..multidot.cm or higher.
摘要:
A novolak resin made from a carbonyl compound and a specific phenol compound, which resin has good properties, in particular, as a base resin of a photoresist.
摘要:
A process for purifying crude .beta.-naphthol obtained via an alkylnaphthalene hydroperoxide, comprising subjecting the crude .beta.-naphthol to a recrystallization treatment using (1) an aliphatic or alicyclic hydrocarbon solvent having 5 to 10 carbon atoms, or (2) a mixed solvent comprising the aliphatic or alicyclic hydrocarbon solvent and at least one other solvent selected from the group consisting of benzene, a benzene derivative, a ketone, an alcohol, an ether and an ester.
摘要:
There is disclosed a conveyer and a conveying method that enable conveying a lengthy honeycomb formed article extruded at a high speed with a simple apparatus without causing cracks and deformation. The conveyer of a honeycomb formed article includes a plurality of lengthy cradles that are sequentially supplied and then sequentially support and convey the honeycomb formed article, and a fixed support that is fixed so as to extend from the extruder to a supply position of the lengthy cradles, supports the honeycomb formed article just after being extruded, and conveys it to one of the lengthy cradles, and the fixed support is an air float having a supporting face and a plurality of air ejection pores formed on the supporting face that conveys the honeycomb formed article by feeding air from the air ejection pores.
摘要:
The present invention provides a cutting method of a ceramic honeycomb formed body 5 for cutting the ceramic honeycomb formed body 5 with a fine line stretched at an appropriate tension substantially at right angles to the direction of throughholes 9 thereof. The method comprises the steps of providing a cutting guide groove 10 running through the outer periphery of the ceramic honeycomb formed body substantially at right angles to the direction of throughholes 9, and putting a fine line 2 to the cutting guide groove 10, to cut the ceramic honeycomb formed body 5 only by pressing the fine line 2 against the ceramic honeycomb formed body 5. By using this cutting method, it is possible to cut a ceramic honeycomb formed body having thin partition walls of under 125 &mgr;m without causing a distortion. The possibility to reduce the cutting frequency of the fine line leads to possibility to improve the cutting efficiency.
摘要:
An apparatus for cutting green ceramic bodies, includes a traveling path for green ceramic bodies, beds for supporting green ceramic bodies at constant intervals in series along the traveling path, an arm on each side of the traveling path, two drive portions for moving respective arms perpendicularly relative to the traveling path, a drive portion for moving both arms in the same direction as the traveling path, a wire for cutting green ceramic bodies, extending between the arms, and wire supporting portions, on respective arms. Each wire supporting portion includes a servo motor with an axis of rotation, a magnet member around the axis of rotation, a bobbin having a conical surface around which wire is wound, and magnetically coupled to the axis of rotation by the magnet member, and a traversing mechanism for varying the position where the wire is wound around the length of the conical surface.
摘要:
A positive-working photoresist composition which exhibits a high sensitivity and a high resolution in addition to excellent characteristics such as heat resistance, film retention ratio, coatability and profile; which comprises an alkali-soluble resin comprising a polyvinylphenol resin which is polyvinylphenol and/or its partially hydrogenated product in which the phenolic hydroxyl groups are partially alkyletherified and partially protected; and a sulfonate of a N-hydroxyimide compound as an acid generator.
摘要:
A negative photoresist composition containing an alkali-soluble resin which is obtainable through a condensation reaction of an aldehyde with a phenol compound containing a compound of the general formula: ##STR1## wherein R.sup.1 to R.sup.9 are independently a hydrogen atom, an alkyl group, an alkenyl group, an alkylcarbonyl group, a halogen atom or a hydroxyl group, provided that at least one of R.sup.1 to R.sup.9 is a hydroxyl group and, at the ortho- or para-position to the hydroxyl group, at least two hydrogen atoms are present; a cross linking agent; and a photo-acid generator, and a negative photoresist composition comprising an alkali-soluble resin, a cross linking agent and a photo-acid generator having a trifluoromethanesulfonic acid ester group, which can increase resolution and contrast of a photoresist pattern.