Abstract:
An optical disc manufacturing method includes: an injection step of injecting a liquid material into a circular plate-shaped injection space having a center hole portion at a center from an injection hole connected to an inner edge portion in the injection space; a discharge step of discharging air and the liquid material from a discharge hole formed on a straight line passing through the injection hole and a center of the center hole portion in a plane direction of the circular plate and at a position opposite to the injection hole; a curing step of curing the liquid material injected into the injection space; and a takeout step of taking out the cured liquid material from the injection space.
Abstract:
[Object] To enable stable void recording to be performed with lower power than in a case where a conventional void recording method that records hole marks (voids) in a bulk layer is adopted.[Solving Means] First laser light is irradiated onto an optical recording medium in which a plurality of resin layers are formed while the first laser light is focused on a boundary surface of the resin layers, to thus record hole marks onto the boundary surface. Since a recording sensitivity of the hole marks is enhanced at the boundary surface of the resin layers, by recording hole marks onto the boundary surface as described above, laser power requisite for recording can be suppressed as compared to the conventional art. As a result, it becomes unnecessary to use a special laser such as a short-pulse laser, and even if a CW laser (CW: Continuous Wave) is used, a recording speed does not need to be sacrificed. By compensating weak points of the conventional void recording method, realizability of a large-capacity recording medium as a bulk-type recording medium can be additionally enhanced.
Abstract:
A structure for joining a cross member (2) to a side member (1) of a chassis frame, wherein a flange (4) is formed integrally at an end of the cross member via a flare (3), an extension member (5) inserted into the end of the cross member (2) to project from the afore-mentioned flange (4) is welded to the flare (3), the extension member (5) is passed through an inside hole (9i) formed in an inside part (8i) in the width direction of the vehicle in the closed-section part of the side member (1) and welded to an outside hole (9o) formed in an outside part (8o) in the width direction of the vehicle, and the outer periphery of the flange (4) is welded to the inside part (8i) in the width direction of the vehicle. The closed-section part (8) is formed in a rectangular shape, and the top and bottom parts of the periphery of the flange (4) are located near top and bottom bends (12) of the closed-section part (8).
Abstract:
An optical information recording and reproducing device 1 irradiates initialization light L1 to an optical information recording medium 100 having a recording layer 101 made of photopolymerization-type photopolymer in advance to bring about the photopolymerization or the photocrosslinking to perform the initialization processing, and condenses a recording light beam L2c having a comparatively strong light intensity to a target position in the recording layer 101 and increases the temperature thereof to transubstantiate the target position to record a recording mark RM at the time of recording information, and condenses a reading light beam L2d having a comparatively weak light intensity to the target position and receives a returned light beam L3 having a sufficient light amount reflected by the recording mark RM at the time of reproducing information, which makes it possible to reliably record the recording mark RM and stably read out the recording mark RM.
Abstract:
An optical information recording medium, which is made of a resin provided with photoreactivity containing organometal compound, has a recording layer on which, after a photoreaction are brought about when predetermined initialization light is irradiated to the medium and then the resin is hardened, at a time of recording information, a recording mark is formed when predetermined recording light is condensed to the medium, and a temperature of the medium near a focal point of the recording light is increased and the organometal compound is transubstantiated, and at a time of reproducing information, the information is reproduced based on returned light according to predetermined reading light being irradiated.
Abstract:
The present invention provides a device and a method for determining whether or not component holder is good, which enable detecting component holders that are to affect correct component recognition and further enable preventing interferences between constituent devices, a component mounting apparatus with the determining device, and a component mounting method. The determining device has an illuminating device, a CCD camera and a controller to determine whether or not a suction nozzle is good based on a luminance at a component hold face of the suction nozzle. The suction nozzle having the light reflectance of the component hold face increased to a level whereat the correct recognition of an electronic component held by the suction nozzle is affected can be detected accordingly. An interference preventing device is also provided, so that the interference between the CCD camera and the suction nozzle can be prevented.
Abstract:
A slide-type solvent transfer unit is used, and a plurality of nozzles at a head part which suck and hold components are moved down simultaneously to transfer flux to electronic components. In comparison with an electronic component mounting method including a transfer operation whereby nozzles are lowered one by one by a conventional electronic component mounting apparatus equipped with a rotary type solvent transfer unit, the time required for moving the nozzles up and down is shortened and a total cycle time is reduced, so that production efficiency is improved.
Abstract:
A solvent transfer unit is made a slide type and a plurality of nozzles at a head part which suck and hold components are moved down simultaneously to transfer the flux to electronic components. In comparison with an electronic component mounting method including a transfer operation whereby nozzles are lowered one by one by a conventional electronic component mounting apparatus equipped with a rotary type solvent transfer unit, a time for moving the nozzles up, down is shortened and a total cycle time is reduced, so that production efficiency is improved.
Abstract:
A polyolefin resin composition consisting essentially of at least one homopolymer or copolymer of an aliphatic monoolefin and 0.05 to 2% by weight, based on the weight of the composition, of a dibenzylidene sorbitol derivative of the following formula ##STR1## wherein R and R' are different from each other and each represents a member selected from the class consisting of a hydrogen atom, a chlorine atom, alkyl groups having 1 to 3 carbon atoms and alkoxy groups having a C.sub.1 -C.sub.3 alkyl moiety.
Abstract:
A filter medium which permits an increased amount of filtration. The filter medium can be prepared by blending 100 parts by weight of aggregate particles, 5-18 parts by weight of an inorganic bonding material having a chemical composition of about 10-50% by weight of SiO.sub.2 and about 5-20% by weight of B.sub.2 O.sub.3 and containing at least 70% by weight of a non-vitreous substance such as talc or boric acid, and about 3-15 parts by weight of a combustible substance such as wheat flour, kneading the mixture with a caking material and water, molding the kneaded mixture, drying it, and then calcining the dried mixture at a temperature not lower than about 1100.degree.C. The size and number of the air-permeable pores in the filter medium can be controlled by adjusting the amounts of the bonding material and combustible substance.