摘要:
An apparatus for measuring a diamond color comprises a light source composed of a lamp and an integrating sphere for diffusing light therein emitted from the lamp; a diamond holder including diamond supporting head means and suction base means, thereby positioning the table facet of the diamond in the integrating sphere for allowing the diffused light from the light source to fall on the table facet of the diamond; a monochromator for separating a beam of light as it emerges from the diamond through the table facet side into a spectrum; a photodetector for detecting the light from the monochromator; variable slit means disposed in at least one of the monochromator and the photodetector for adjusting the size of the beam of light to a diameter of the diamond; a measurement unit for controlling at least the monochromator to obtain a spectrum of the light which has passed through the diamond; and an arithmetic unit for deriving tristimulus values X, Y and Z from the spectrum of the light from the diamond; which is able to measure the colors of brilliant-cut diamonds easily and objectively.
摘要:
The present invention relates to a peeling device which peels off a reinforcing sheet stuck on a substrate, including: a supporting unit which supports one main surface of a laminate having the substrate and the reinforcing sheet; a plate-shaped flexible member to be attached to the other main surface of the laminate; a plurality of pads fixed to a surface of the flexible member lying opposite to the laminate side; a plurality of rods each of which is coupled to any one of the plurality of pads; a plurality of driving devices by which the plurality of rods are made to move, respectively, in their individual axial directions; and a control device by which a position of each of the plurality of rods is controlled on an individual basis, in which each of the plurality of pads is coupled to any one of the plurality of the rods via any one of a plurality of joints so that each pad is allowed to be pivotable centering on a vicinity of an intersection point of a centerline of the rod coupled thereto with a surface of the reinforcing sheet facing the substrate side or a surface of the substrate facing the reinforcing sheet side, and in which the one main surface of the laminate is supported by the supporting unit, and at the same time, the position of each of the plurality of rods is controlled by the control device so that the other main surface of the laminate is subjected to bending deformation in sequence from one-end side thereof.
摘要:
This invention provides a process for producing a printed circuit board characterized by the steps of drilling holes in a copper clad laminate, treating the entire surface of the laminate including the hole-defining inner surfaces with a catalyst, removing the catalyst from the surface of the copper foil of the laminate by mechanically cleaning the surface of the copper foil, depositing electroless nickel only on the hole-defining inner surfaces, forming a pattern with an etching resist, etching away the copper foil except at the pattern area, removing the etching resist, masking with a solder resist the entire surface except at the hole-defining inner surfaces and the lands, and subjecting the hole-defining inner surfaces and the lands to electroless copper plating.
摘要:
In a cooling a galvanized steel sheet (W), change in emissivity of a surface of the galvanized steel sheet (W) is measured in a temperature range lower than the boiling point of zinc but not lower than the ferrite transformation temperature, using an emissivity sensor (4) with an observation wavelength of 1.4 μm or longer, and pressing and quenching in a pressing and quenching apparatus (2) is started after completion of an alloying reaction has been detected based on the change in emissivity. The emissivity sensor (4) preferably has an InGaAs element or a thermopile as a measuring element.
摘要:
A performance evaluation method of a vehicle member includes a calculation process for performing an analysis using a partial structure CAE model modeling a module where a member of a vehicle to be evaluated and a collision test device for conducting a collision test on the member are combined, and obtaining a value of a collision performance evaluation parameter in the partial structure CAE model; a calculation process for determining a boundary condition of the partial structure CAE model; a calculation process for determining a test condition of a member collision test device based on the boundary condition of the partial structure CAE model; and a test process for conducting a collision test using a physical member collision test device and a physical member, based on the set condition of the member collision test device.
摘要:
Thermistor chips are produced by preparing ceramic green sheets, applying an inorganic material such as a glass paste on these green sheets in areas including lines along which they are to be later cut, stacking a plurality of these green sheets one on top of another to obtain a stacked body, obtaining chips by cutting this stacked body along those pre-specified lines and subjecting these chips to a firing process to obtain sintered bodies, and forming outer electrodes on mutually opposite end surfaces of these sintered bodies. A thermistor chip thus produced has a thermistor element having outer electrodes on its mutually opposite end surfaces, and diffused layers of an inorganic material having a higher specific resistance than material of the thermistor element. These diffused layers are formed proximally to externally exposed surfaces of the thermistor element.
摘要:
In a cooling a galvanized steel sheet (W), change in emissivity of a surface of the galvanized steel sheet (W) is measured in a temperature range lower than the boiling point of zinc but not lower than the ferrite transformation temperature, using an emissivity sensor (4) with an observation wavelength of 1.4 μm or longer, and pressing and quenching in a pressing and quenching apparatus (2) is started after completion of an alloying reaction has been detected based on the change in emissivity. The emissivity sensor (4) preferably has an InGaAs element or a thermopile as a measuring element.
摘要:
The present invention relates to a peeling device which peels off a reinforcing sheet stuck on a substrate, including: a supporting unit which supports one main surface of a laminate having the substrate and the reinforcing sheet; a plate-shaped flexible member to be attached to the other main surface of the laminate; a plurality of pads fixed to a surface of the flexible member lying opposite to the laminate side; a plurality of rods each of which is coupled to any one of the plurality of pads; a plurality of driving devices by which the plurality of rods are made to move, respectively, in their individual axial directions; and a control device by which a position of each of the plurality of rods is controlled on an individual basis, in which each of the plurality of pads is coupled to any one of the plurality of the rods via any one of a plurality of joints so that each pad is allowed to be pivotable centering on a vicinity of an intersection point of a centerline of the rod coupled thereto with a surface of the reinforcing sheet facing the substrate side or a surface of the substrate facing the reinforcing sheet side, and in which the one main surface of the laminate is supported by the supporting unit, and at the same time, the position of each of the plurality of rods is controlled by the control device so that the other main surface of the laminate is subjected to bending deformation in sequence from one-end side thereof.
摘要:
A lamination-type resistance element includes a laminated sinter having internal electrodes of a first group and internal electrodes of a second group, the first internal electrode group including a plurality of internal electrodes facing each other through a ceramic resistance layer and defining a resistance unit at the portion where the plurality of internal electrodes face each other. A first end of the resistance unit is connected to a first external electrode and the second end is connected to a second external electrode. The second internal electrode group includes a plurality of pairs of internal electrodes in which the inner ends face each other through a gap on the same plane inside the laminated sinter, and a plurality of pairs of gaps in the plurality of internal electrodes are arranged at the same location when seen from one end of the lamination direction of the laminated sinter. Thereby, fine adjustment of a resistance value can be performed.
摘要:
Method and apparatus for densitometry wherein a sample spot developed on a supporting medium is scanned by monochromatic light in a zigzag way, and at a predetermined point outside the spot in each scanning stroke the measured output is periodically sampled and stored so as to be subtracted from the measured output during the scanning stroke for correction of the base line of the measured output.