Abstract: A resin composition for sealing a light-emitting device of the present invention includes a silsesquioxane resin including two or more oxetanyl groups, a cationic polymerization initiator and a metal oxide fine particle. Furthermore, a lamp of the present invention includes a package equipped with a sealing member, an electrode exposed in the bottom portion of the sealing member, and a light-emitting device arranged on the bottom portion and electrically connected with the electrode, wherein the light-emitting device is sealed with the resin composition for sealing a light-emitting device filled in the sealing member.

Abstract: Novel epoxy compounds having imide structures represented by general formula (I) or general formula (II) below, and having an allyl group in the same molecule, as well as a process for their production.

Abstract: Embodiments of the present invention help to achieve a read error recovery, and suppress decreases in the capacity of the disk drive device and degradation in performance. In one embodiment, a hard disk drive (HDD) performs following control without use of repeatable run-out (RRO) compensation information on a magnetic disk in a normal reading process. When an error occurs in a normal reading process, the HDD moves a read element to a position different from a target position of the normal reading process. At the position where the read element has been moved, the read element reads out the RRO compensation information. In a recovery procedure for the reading process where the error has occurred, the HDD performs following control with compensation by the servo compensation information read out by the read element.

Abstract: This invention relates to an injection molding method using an injection mold. The method comprises (1) a molten resin injection step for injecting the molten resin from a gate into a cavity, (2) a pressure-keeping step for continuously applying pressure from the gate after the molten resin injection step, and (3) a fluid injection step for injecting a fluid toward the back surface of the molded product. The pressure-keeping step and the fluid injection step are simultaneously executed. Simultaneously executing these two steps can lower the pressure that is to be continuously applied from the gate. The present injection molding method can reduce the pressure of the fluid to be injected toward the back surface of the molded product in order to cause the back surface of the molded product to separate from the cavity surface.

Abstract: Provided is a microcapsule-based hardener for an epoxy resin, which have a core (C) formed using a hardener (H) for the epoxy resin as a starting material and a shell (S) for covering the core (C) therewith. Since it is characterized in that the hardener (H) for the epoxy resin has an average particle size exceeding 0.3 ?m and not greater than 12 ?m; a content of a small-particle-size hardener for epoxy resin defined to have a particle size 0.5 time or less of the average particle size of the hardener (H) for the epoxy resin is from 0.1 to 15%; and the shell (S) has, on the surface thereof, a binding group (x) capable of absorbing infrared rays having a wave number of from 1630 to 1680 cm?1, a binding group (y) capable of absorbing infrared rays having a wave number of from 1680 to 1725 cm?1, and a binding group (z) capable of absorbing infrared rays having a wave number of from 1730 to 1755 cm?1, it is excellent in storage stability and at the same time, in reaction rapidity.

Abstract: Novel epoxy compounds represented by the general formula: (wherein R1 and R2 each represent hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, each R3 may be the same or different and each independently represents hydrogen, alkyl, aryl, aralkyl, alkenyl or fluoroalkyl, and n is 0 or a positive integer), and the general formula: (wherein R3 represents the same groups specified above, R4 represents hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, and n is 0 or a positive integer), and a process for their production.

Abstract: Embodiments in accordance with the present invention provide a magnetic disk drive with sufficiently low noise. A digital/analog converter supplies to a voice coil motor (VCM) driver a control voltage comprising a first preset voltage value, a second preset voltage value, and a transition voltage value of a substantially cosine wave that interconnects the first preset voltage value and the second preset voltage value. A driving current is supplied from the VCM driver to a voice coil of an actuator assembly. Since a current not containing higher-harmonic components in a transition period flows as a VCM current that flows into the voice coil, vibromotive force can be easily suppressed by shifting a structural resonance point of the entire disk drive including the actuator assembly.

Abstract: Disclosed is a thermosetting resin composition including; (A) a carboxyl group-containing polyurethane prepared by using (a) a polyisocyanate compound (b) polyol compounds (c) a carboxyl group-containing dihydroxy compound as raw materials, (B) a curing agent, wherein the polyol compounds (b) are one or more kinds of polyol compound(s) selected from Group (I) and one or more kinds of polyol compound(s) selected from Group (II); Group I: polycarbonate polyol, polyether polyol, polyester polyol, and polylactone polyol, Group II: polybutadiene polyol, polysilicone having terminal hydroxyl groups, and such a polyol that has 18 to 72 carbon atoms and oxygen atoms present only in hydroxyl groups. The thermosetting resin composition can give a protection film for flexible printed circuits that has excellent long-term reliability of electric insulation, flexibility, and low warpage from curing shrinkage, and particularly low tackiness.

Abstract: A carboxyl group-containing polyurethane is capable of giving cured products excellent in adhesion with substrates, low warpage, flexibility, plating resistance, soldering heat resistance and long-term reliability. The carboxyl group-containing polyurethane includes a structure derived from a polyol compound having 1 to 10 hydroxyl groups and 18 to 72 carbon atoms per molecule. The carboxyl group-containing polyurethane is produced by reacting: (A) a polyisocyanate compound; (B) a polyol compound having 1 to 10 hydroxyl groups and 18 to 72 carbon atoms per molecule; and (C) a carboxyl group-containing dihydroxy compound (other than the compound (B)).

Abstract: The present invention provides a thermoset resin composition which contains polycarboxylic acid resin (A) and epoxy resin and/or oxetane resin (B) as essential ingredients and is capable of forming a transparent cured product having improved endurance in hot and humid conditions; an optical film obtained by curing the above-mentioned thermoset resin composition; and a laminated film obtained by applying the above-mentioned thermoset resin composition onto a film substrate and curing it.

Abstract: A heat-curable resin composition has excellent printability, non-tackiness, matte and electrical properties. The heat-curable resin composition includes a heat-curable resin (A) and silicone powder (B). Preferably, the silicone powder (B) is spherical or substantially spherical, and has a specific gravity of 0.95 to 1.5 and a particle diameter of 0.01 to 10 ?m. The heat-curable resin (A) preferably includes a carboxyl group-containing polyurethane and a heat-curable component. The carboxyl group-containing polyurethane is obtained by reacting a polyisocyanate compound (a), a polyol compound (b) (other than compound (c)), and a carboxyl group-containing dihydroxy compound (c).

Abstract: Disclosed is a carboxyl group-containing polyurethane containing a structure derived from a polycarbonate diol (B), the polycarbonate diol (B) having: (i) a number-average molecular weight of 500 to 50,000; (ii) an alkylene group of 8 to 18 carbon atoms in its structure; and (iii) hydroxyl groups at both ends. The carboxyl group-containing polyurethane is suitable as materials of cured products that are excellent in adhesion with substrates, low warpage, flexibility, plating resistance, soldering heat resistance and long-term reliability.

Abstract: Disclosed is a carboxyl group-containing polyurethane (A) produced from a polyol (b) containing at least 10 mol % (relative to the total (100 mol %) of the polyol (b)) of a polyol (b1) which: (i) has a number-average molecular weight of 500 to 50,000; (ii) has 1 to 10 hydroxyl groups per molecule; and (iii) is one or a combination of two or more polyols selected from the group consisting of polybutadiene polyol, polyisoprene polyol, hydrogenated polybutadiene polyol and hydrogenated polyisoprene polyol. The carboxyl group-containing polyurethane (A) is suitable as materials of cured products, for example cured films, that are excellent in adhesion with substrates, low warpage, flexibility, plating resistance, soldering heat resistance and long-term reliability.

Abstract: Embodiments of the present invention provide a magnetic disk drive capable of easily suppressing degradation of position error caused by disturbance resulting from vibration from the outside. According to one embodiment, the magnetic disk drive acquires, during a period of time of track following control, data necessary for determining a filtering characteristic required to newly be specified in a peak filter; in association with the start of subsequent seek control, determines the filtering characteristic required to be specified in the peak filter; and specifies the determined filtering characteristic in the peak filter.

Abstract: The invention relates to a thermosetting resin composition comprising (A) 20 to 90 mass % of thermosetting resin, (B) 10 to 80 mass % of inorganic and/or organic fine particles and (C) 0.1 to 5 mass % of fluorine-containing polyether, wherein (C) is polymer having fluorinated alkyl polyoxetane structure of formula (1) or (2), (m is an integer of 1 to 100, n is an integer of 1 to 6, R1 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, R2 and R3 each represent a straight or branched chain alkyl group having 1 to 20 carbon atoms, with a proviso that at least 50% of hydrogen atoms present in the alkyl group is substituted by fluorine and the other hydrogen atoms are substituted by hydrogen, iodine, chlorine or bromine atoms) or a composition containing copolymer which consists of monomer having fluorinated alkyl polyoxetane structure and oxygen-containing monomer having 2 to 6 carbon atoms.

Abstract: Embodiments of the present invention provide a magnetic recording apparatus capable of generating RRO compensation information that can expand the disturbance frequency range in which to compensate for RRO. Embodiments of the present invention describe a magnetic recording apparatus that uses a plurality of repetitive control systems to detect repeatable runout during the rotation of a magnetic recording medium for a frequency characteristic of each of the repetitive control systems. The magnetic recording apparatus further generates compensation information to compensate for each of the detected repeatable runout. The magnetic recording apparatus still further writes the compensation information generated for each of the repetitive control systems to a servo signal, thus suppressing and controlling the repeatable runout.

Abstract: There is provided a novel method for producing a bifunctional epoxy monomer which comprises reacting diolefin with a hydrogen peroxide aqueous solution, in the presence of molybdenum or tungsten oxide as a catalyst to selectively epoxidize a double bound at a specific position. The bifunctional epoxy monomers provided by the present invention are substances widely used in various industrial fields such as chemical industry, as materials for resist materials (particularly solder resist materials), and intermediates of agrochemicals and medicines, and various polymers such as plasticizers, adhesives and coating resins.

Abstract: The invention relates to a polycarbonate diol, comprising an organic residue derived from a diol component represented by formula (1), wherein n is 0 or an integer of 1 to 4, and the norbornane structure or the cyclopentane structure may be substituted with a halogen group or a hydrocarbon group. The polycarbonate diol according to the present invention can give a polyurethane resin having excellent heat resistance and flexibility in a well-balanced manner and reliability in long-term insulating properties under high temperature/high humidity conditions.

Abstract: The thermosetting resin composition and the solder resist ink according to the present invention are characterized by comprising: a thermosetting resin (A) comprising (A1) a compound containing an acid anhydride group and/or a carboxyl group and (A2) a compound having a functional group which reacts with (A1) described above and an organic filler (B) containing a phosphorus atom, wherein the organic filler (B) containing a phosphorus atom has an average particle diameter of 50 Êm or less. According to the present invention, capable of being provided at a low cost and a good productivity are an excellent thermosetting resin composition and solder resist ink capable of forming a cured material which achieves an adhesion to a substrate, a low warping property, a flexibility, a plating resistance, a solder heat resistance and a long term reliability as well as a flame retardancy, and a cured material and a protective film which are excellent in the above characteristics.

Abstract: Disclosed is an automobile door structure supported on an automobile body and adapted to be engaged with and disengaged from said automobile body through a door latch, which comprises an outer segment 2, and an inner segment 6, 8 disposed on the side of an automobile cabin relative to the outer segment 2 and provided with the door latch. The inner segment includes enhancement means 50 for enhancing an acoustic conversion efficiency of a vibration having a specific low frequency among vibrations of the door latch generated during door closing. The automobile door structure of the present invention can enhance a low-frequency sound capable of giving the impression of dignity on an occupant.