摘要:
A lead frame (100) for a semiconductor device is formed by applying nickel plating (102), palladium plating (103), and gold flash plating (104) substantially entirely to lead frame body (101) such as copper thin plate in this order, and further applying silver plating (105) selectively to part of an inner part that is to be enclosed with a package of the semiconductor device. The lead frame (100) may also include a base of the package. The silver plating contributes to an excellent light reflectance and wire bonding efficiency of the inner part, whereas the gold flash plating contributes to an excellent resistance to corrosion and soldering efficiency of an outer part that is outside the package.
摘要:
A method for transacting nucleic acid to cell comprising a step for forming a nucleic acid complex by bringing a double-stranded nucleic acid molecule into contact with a nucleic acid carrier having an amino acid sequence of alternating a basic amino acid and a hydrophobic amino acid, which has a peptide chain that forms a β-sheet structure in which a side chain of a positively charged basic amino acid is disposed on one surface side and a side chain of a hydrophobic amino acid is disposed on the opposite surface side in the presence of the double-stranded nucleic acid molecule having a double helix structure, and by binding the double-stranded nucleic acid molecule and the peptide chain through either one or both of the electrostatic interaction between the side chains of the basic amino acid and phosphate groups and hydrogen bonds between the double stranded-nucleic acid molecule and the peptide chain and a nucleic acid complex used for the same are disclosed.
摘要:
A lead frame (100) for a semiconductor device is formed by applying nickel plating (102), palladium plating (103), and gold flash plating (104) substantially entirely to lead frame body (101) such as copper thin plate in this order, and further applying silver plating (105) selectively to part of an inner part that is to be enclosed with a package of the semiconductor device. The lead frame (100) may also include a base of the package. The silver plating contributes to an excellent light reflectance and wire bonding efficiency of the inner part, whereas the gold flash plating contributes to an excellent resistance to corrosion and soldering efficiency of an outer part that is outside the package.
摘要:
A method for varnish application to a dynamoelectric stator is disclosed. The method includes a varnish treatment process and application by preheating the stator; adjusting a viscosity of the varnish; dripping the varnish onto a coil end of the stator from radially outside the stator while rotating the preheated stator around a central axis; and hardening the varnish dripped onto the coil end by heating the stator. The varnish viscosity is adjusted so that said varnish dripped onto said coil end passes through the coil end from radially outside to radially inside, and the varnish is dripped onto said coil end along a direction which is perpendicular to the central axis of the collective coils.
摘要:
A magnetic disk storage device capable of avoiding the occurrence of vibration of magnetic disks and off-track of magnetic heads with respect to the magnetic disks, including an inner shroud enclosing a disk assembly composed of a multiplicity of magnetic disks stacked in superposed relation with spacers being interposed therebetween and formed at its outer peripheral wall with first ports for inserting access arms therethrough and at its top above a spindle supporting the disk assembly with a second port, a cylindrical filter for removing dust from air flowing through the second port of the inner shroud into the interior thereof, and a dust cover enclosing the inner shroud, actuators and filter. The provision of the inner shroud is conductive to prevention of development of turbulent air flow in the vicinity of the magnetic disks. The inner shroud is further formed at its outer peripheral wall with a multiplicity of small apertures for releasing heat generated in the inner shroud to outside, to thereby avoid thermal off-track of the magnetic heads.
摘要:
An autoleveling device for a vehicle having hydro-pneumatic suspension units including a housing fixed to a vehicle body the housing having an oil supply port, an oil exhaust port and a cylinder port commonly connected to the hydro-pneumatic suspension units, a cam rotatable in response to variations in vehicle height, a first piston movably following the profile of the cam, a second piston in opposition to the first piston, a first spring interposed between the first and second pistons, a second spring interposed between the second piston and an end of the housing to balancingly support the second piston with the first spring, an oil supply valve adapted to be opened by a displacement of the second piston in excess of a determined value in one direction to communicate the cylinder port with the oil supply port, an oil exhaust valve opened by a displacement of the second piston in excess of a determined value in the other direction to communicate the cylinder port with the oil exhaust port, a first oil chamber enclosing the first spring and second oil chamber enclosing the second spring on both sides of the second piston being communicated with each other through an orifice, thereby performing the autoleveling function with high accuracies by selecting the cam profile for moving the first piston, but preventing the autoleveling function when wheels of the vehicle momentarily hop due to uneveness of roads owing to a time delay constant resulting from the flow resistance of oil flowing through the orifice.
摘要:
A movable reaction member is provided which is normally prevented from being moved to have a dashpot delay movement of a piston with a levelling valve operating member and which, when it is desired to change the vehicle body level to an optional value, is quickly moved integrally with the piston to render the dashpot ineffective to satisfactorily reduce the time necessary for changing the vehicle body level.
摘要:
A medium identification device identifies a type of a recording medium used for image formation. The medium identification device includes: a two-dimensional image sensor that captures an image of the recording medium; and an identifying unit that obtains a glossiness evaluation value indicating glossiness of the recording medium, a surface roughness evaluation value indicating surface roughness of the recording medium, and a coloring evaluation value indicating coloring of the recording medium, using image data of a specular reflection region reflecting specular reflection light from the recording medium and image data of a diffused reflection region reflecting diffused reflection light from the recording medium, the regions being in the image of the recording medium, and identifies the type of the recording medium by combining determination using the glossiness evaluation value, determination using the surface roughness evaluation value, and determination using the coloring evaluation value.
摘要:
An imaging device comprises: a two-dimensional image sensor that includes a plurality of light receiving units capable of reading an output value individually according to a volume of received light thereof; a receiving unit that receives a control signal that specifies an operation mode of the two-dimensional image sensor that is predetermined according to a purpose of using the output value; and a sensor controller that sets, on the basis of the control signal received by the receiving unit, an imaging area representing an area of a light receiving unit that reads the output value from among the light receiving units of the two-dimensional image sensor and controls reading of the output value.
摘要:
A nozzle testing device includes: a two-dimensional image sensor to capture an image of a pattern formed on a recording object by discharging ink from a nozzle row while moving the nozzle row and the recording object relative to each other in a direction orthogonal to the nozzle row; a light source unit provided such that regularly reflected light by the pattern forms a regular reflection area in the image of the pattern captured by the two-dimensional image sensor; and a detection unit to analyze the image to detect discharge failure of the nozzles. The regular reflection area is formed in the image such that a dimension in a direction corresponding to the direction of relative movement between the nozzle row and the recording object is greater than a dimension in a direction orthogonal to the direction corresponding to the direction of relative movement in the image.