摘要:
An optical recording and reproducing method is able to record and reproduce information by using an optical system using recording and reproducing light with a wavelength selected in a range of from 780 nm±10 nm and an objective lens with a numerical aperture NA selected in a range of from 0.45±0.01 and records and reproduces first and second optical recording mediums having different recording capacities. The first optical recording medium is constructed by using a substrate with a track pitch Tp1 being selected in a range of from 1.5 μm to 1.7 μm and a groove depth d1 being selected in a range of from 70 nm to 90 nm, and the second optical recording medium is constructed by using a substrate 11 with a track pitch Tp2 being selected in a range of from 1.2 μm to 1.3 μm and a groove depth d2 of the groove 12 being selected in a range of from 150 nm to 180 nm. This, the optical recording medium has compatibility with existing optical discs and has a recording density high enough to record a moving picture.
摘要:
A pseudo-cubic function generator circuit comprises a CMOS inverter which is applied with a detected voltage of a sensor and supplied with a power supply voltage, and a voltage divider circuit for dividing the power supply voltage, wherein an output terminal of the CMOS inverter is connected to a voltage division point of the voltage divider circuit to generate an output voltage from the voltage division point. The pseudo-cubic function generator circuit can directly generate a large voltage change in a simple circuit configuration with a reduced noise component, and facilitates a setting of each parameter for specifying a cubic function curve. The parameter is set, for example, by scaling substantial gate areas of a P-MOS FET and an N-MOS FET which constitutes the CMOS inverter.
摘要:
A keyswitch device of the invention includes a plurality levers (first to third levers), one side of each lever rotating engaging the base plate; a holder supported so as to be upwardly and downwardly movable with respect to the base by being engaged with the other side of each lever; and a switch, disposed between the base plate and the holder, for performing a switching operation as the keytop is moved upward and downward. Rotary shafts of the first and second levers symmetrically disposed on the left and right sides engage a groove of the holder. A rotary shaft of the third lever is disposed so as to cross the rotary shafts disposed at engagers at the first and second levers.
摘要:
A keyswitch device includes first to third levers, a holder, and a switch. One side of each lever rotatably engages a base plate. The holder is supported so as to be movable vertically with respect to the base plate by being engaged with the other side of each lever. The switch is disposed between the base plate and the holder, and is used to perform a switching operation when the holder is moved vertically. A rotary shaft of the third lever is disposed so as to cross rotary shafts at engaging sections of the respective first and second levers.
摘要:
An in-plane-switching liquid crystal display unit has a two-dimensional matrix of pixel regions each including a first auxiliary region and a second region. When no electric field is applied, liquid crystal molecules in the first and second regions are directed in respective orientations that lie at 90° with respect to each other. When a voltage is applied, the liquid crystal molecules are rotated in the same direction while maintaining their orientations in the first and second regions at 90° with respect to each other. Alternatively, the liquid crystal molecules in the first and second regions are directed in the same orientation when no electric field is applied, and when a voltage is applied, the liquid crystal molecules are rotated opposite directions while maintaining their orientations in symmetric relationship.
摘要:
A toner can be produced by dispersing a colorant in a dispersion medium essentially composed of a polymerizable monomer by using a media-type dispersing device at a tip speed of a stirring body of 3 to 20 m/s with a residence time being 0.03 to 0.5 hour to obtain a monomer composition A; dispersing or dissolving a charge control agent in a dispersion medium to obtain a monomer composition B; dispersing or dissolving a parting agent in a dispersion medium to obtain a monomer composition C; mixing or dispersing the monomer composition A, the monomer composition B and the monomer composition C in a dispersion medium to obtain a polymerizable composition D; and homogenizing the composition D in an aqueous dispersion medium containing a dispersion stabilizer to generate droplets; polymerizing the droplets to obtain colored polymer particles; and attaching an outer-additive on the colored polymer particles.
摘要:
A method of mounting a semiconductor device (16) comprises the steps of disposing an anisotropic conductive adhesive (13) on the surface of a circuit board (17), placing the semiconductor device (16) on the surface of the circuit board (17) after aligning bumps (14) provided on the semiconductor device (16) with wiring patterns (15) formed on the surface of the circuit board (17), respectively, provisionally press-bonding the semiconductor device (16) onto the circuit board (17) by heating at a temperature lower than the curing temperature of an adhesive resin (11) of the anisotropic conductive adhesive (13) while applying a predetermined pressure thereto by use of a heating and pressurizing tool (18), and thereafter bonding the semiconductor device (16), as provisionally press-bonded, onto the circuit board (17) by heating and curing the adhesive resin (11) at a temperature causing the same to be cured.
摘要:
A toner for development of electrostatic images comprising carbon black as a colorant, wherein the carbon black has the following features: (1) the primary particle diameter being within a range of 28 to 60 nm; (2) the DBP oil absorption being within a range of 40 to 75 ml/100 g; and (3) the pH being within a range of 6.0 to 10.0, and a production process of the toner by a suspension polymerization process.
摘要:
A plurality of magnetic head devices are placed on different scanning regions in the radial direction of a disk-shaped recording medium. Each scanning region is slightly displaced from each of the other scanning regions in the radial direction of the recording medium. The plurality of magnetic head devices is tested.
摘要:
A nitrogen-heterocyclic compound is provided which is represented by General Formula (1): where R1 and R2 are independently hydrogen, an alkyl group, an aryl group, or a heteroaryl group; R3 is hydrogen or an aryl group; R4 is a substituted amino group, an alkoxy group, a nitro group, or halogen; m is an integer from 0 to 2; and n is 0 or 1. A process for producing the above compound is also provided. This compound is useful as a source material of medicines, pesticides, electronic materials, and intermediates for other substituted nitrogen-heterocyclic compounds.