摘要:
A breather filter unit for a magnetic disk drive including a base and a cover fixed to the base, the cover having a vent. The breather filter unit includes a casing fixed to an inner surface of the cover, the casing having a vent inlet communicating with the vent of the cover and a vent outlet communicating with an inside of the magnetic disk drive, and a first filter contained in the casing at a position adjacent to the vent inlet, the first filter being formed from a plurality of fibers extending in a direction substantially parallel to that of an air flow from the vent inlet to the vent outlet. The breather filter unit further includes a second filter bonded to the casing so as to cover the vent outlet, and an activated carbon layer contained in the casing at a position between the first filter and the second filter.
摘要:
A magnetic disk drive having one or more magnetic disks, one or more read/write heads each recording or reproducing information for a corresponding one of the magnetic disks, a servo head reading control information from a predetermined one of the magnetic disks, and an actuator supporting the one or more read/write heads and the servo head includes first leads extending from the one or more read/write heads along one side of the actuator, and second leads extending from the servo head along the other side of the actuator so that the second leads can be distanced in space from the first leads.
摘要:
A magnetic disk drive having one or more magnetic disks, one or more read/write heads each recording or reproducing information for a corresponding one of the magnetic disks, a servo head reading control information from a predetermined one of the magnetic disks, and an actuator supporting the one or more read/write heads and the servo head includes first leads extending from the one or more read/write heads along one side of the actuator, and second leads extending from the servo head along the other side of the actuator so that the second leads can be distanced in space from the first leads.
摘要:
Disclosed is a magnetic disk apparatus having a large internal accommodation space. This magnetic disk apparatus comprises a case defining accommodation space inside, magnetic disks disposed in the accommodation space, a spindle motor, magnetic heads and a rotary actuator. The case includes a cover having a first flat portion and a first upright portion standing upright on the first flat portion at a peripheral portion thereof, and a base having a second flat portion and a second upright portion standing upright on the second flat portion at a peripheral portion thereof. This design can ensure a sufficient strength even if the case is made thin, thus allowing the internal accommodation space to be increased. The magnetic disk apparatus also has a printed circuit board, which is provided at the case and has a control circuit mounted thereon for controlling the magnetic heads. The printed circuit board supplies a source voltage to the case. Accordingly, the magnetic disks and the magnetic heads can be kept at the same potential via the case.
摘要:
A magnetic disk apparatus including magnetic disks and a magnetic head assembly for access to the magnetic disks. The magnetic head assembly includes a head carriage having a hub and integral head arms, magnetic heads being carried by the head arms. A flexible printed circuit is attached to the side surface of the head carriage via a double sided pressure sensitive adhesive tape which provides a layer of elastomeric material to mitigate a deformation of the head carriage relative to the flexible printed circuit and the bearings supporting the head carriage to improve the off-track of the magnetic disks.
摘要:
A polycarbosilane has a main chain in which silicon atoms and carbon atoms are alternately repeated, and includes a structural unit shown by the following general formula (1), a structural unit shown by the following general formula (2), a structural unit shown by the following general formula (3), and a structural unit shown by the following general formula (4).
摘要:
An object is to provide an optical waveguide that has low optical coupling loss when optically coupled with an optical element and that is capable of performing high-quality optical communication, a method for efficiently producing the optical waveguide, an optical waveguide module that is provided with the optical waveguide and is capable of performing high-quality optical communication, a method for efficiently producing the optical waveguide module, and an electronic apparatus. Provided is an optical waveguide including: a core portion; a clad portion that is provided to cover a side surface of the core portion; an optical path-converting unit that is provided partway along the core portion or on an extended line of the core portion and that converts an optical path of the core portion to the outside of the clad portion; and a lens that is provided on a surface of the clad portion at least at a portion optically connected to the core portion via the optical path-converting unit, and that is formed by causing the surface to locally protrude or to be locally depressed.
摘要:
This invention relates to a method of producing a high-melting powder of 2,2-bis�4'-(2",3"-dibromopropoxy)-3',5'-dibromophenyl!propane characterized by comprising a step of adding water to a solution of 2,2-bis�4'-(2",3"-dibromopropoxy)-3',5'-dibromophenyl!-propane in an organic solvent in the presence of a surfactant to give a water-in-oil emulsion and a step of removing the organic solvent from the emulsion in the presence of a crystal nucleus to induce crystallization to give an aqueous dispersion of 2,2-bis�4'-(2",3"-dibromopropoxy)-3',5'-dibromophenyl!propane. In accordance with this invention, crystallization is carried out in the state of an emulsion under assistance of a surfactant so that an ordinary stirrer can be used in production without resort to any special high-shear stirring equipment. Moreover, since a high-melting grade of 2,2-bis�4'-(2",3"-dibromopropoxy)-3',5'-dibromophenyl!propane is obtained as an aqueous dispersion, workability and safety in the subsequent processing are improved.
摘要:
A chain cable retainer includes a plurality of same-size link members made of a resilient material and connected to each other in a longitudinal direction to form a flexible guide for guiding a cable. Each member includes a bottom plate and a pair of side plates integrally attached to the bottom plate. The pair of side plates includes a pair of front, outside plates and a pair of rear, inside plates integrally connected to the respective ends of the outside plates. The inside plates are provided with projections and outside plates are provided with holes engaged with the projections, in such a manner that a link member can be pivotably engaged with respect to an adjacent link member. A low-rigidity part, such as a longitudinal groove, is provided on each of the side plates, so that the pair of inside plates can easily be inserted into the pair of outside plates to allow the projections to engage with the holes.
摘要:
A resin composition comprising 10 to 99 mass % of a biodegradable aliphatic polyester resin (X), and 90 to 1 mass % of a polyolefin resin (Y). The resin composition preferably has a total light transmittance of not higher than 60% as measured with respect to a 3-mm thick test piece in conformity with JIS K7105, or the polyolefin resin (Y) preferably forms a continuous phase in the resin composition.