摘要:
A data storage device, data write method, and program to avoid extra power consumption and suppress a write error that may result from voltage variations. To write data onto a magnetic disk, a write circuit generates a write current that is to be supplied to a write head. The write circuit operates on a positive power supply voltage provided by a host computer, and on a negative power supply voltage generated by a programmable DC—DC converter mounted on a hard disk drive's card. The magnitude of the negative power supply voltage generated by the programmable DC—DC converter is varied in accordance with the temperature surrounding the magnetic disk. Further, the magnitude of the negative power supply voltage generated by the programmable DC—DC converter is varied in accordance with the magnitude of the positive power supply voltage supplied from the host computer.
摘要:
A semiconductor-on-insulator (SOI) type semiconductor device with an enhanced electrostatic discharge (ESD) tolerance having a semiconductor layer on an insulating support substrate, comprising a pair of voltage supply lines formed on the semiconductor layer, a pair of low resistivity semiconductor regions connected to said pair of source supplying lines and disposed within the layer, and a dielectric region disposed between said pair of low resistivity semiconductor regions; wherein said pair of low resistivity semiconductor regions form a capacitor.
摘要:
A thermal transfer recording medium includes a sheet-like base member and a hot-melt ink layer containing a colorant and a hot-melt material. The hot-melt ink layer contains a hot-melt material having a melting point Tm of 70.degree. to 90.degree. C., a complex elastic modulus of 10.sup.6 Pa to 10.sup.7 Pa at 100.degree. C., and a pour point Tp of 150.degree. C. or more, the hot-melt ink layer is in an amorphous or microcrystalline state and satisfies condition I/I.sub.0 .ltoreq.0.9 where I is the diffraction peak intensity in a range of 21.3.degree. to 21.5.degree. originated from an ethylene-based crystal and measured by an x-ray diffraction method, and I0 is the halo intensity in a range of 16.degree. to 17.degree. originated from an amorphous part, or the hot-melt ink layer contains a low-melting point crystalline material having a specific acid value and a specific saponification value and 15 to 30 wt % of a specific copolymer resin whose ethylene content is 65 to 80 wt % and a melt index of 60 or less.
摘要:
In manufacturing a high-density ITO sputtering target by press-molding a powder mixture consisting essentially of indium oxide and tin oxide is compacted and the resulting compact is sintered. The sintering is performed in an atmosphere of oxygen under a pressure of at least one atmosphere (gauge pressure). The present invention offers very advantageous effects from the industrial viewpoint in that it permits mass production of high-performance, high-density ITO targets at low cost using mass productivity.
摘要:
A pressure roller for use in a fixing device includes a core metal, an elastic layer, and a releasing layer. The releasing layer is made of at least one fluorine resin selected from among tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, ethylene-tetrafluoroethylene copolymer, and tetrafluoroethylene-hexafluoropropylene copolymer. The fluorine resin contains at least one polymer selected from among polyvinylidene fluoride, polyacrylonitrile, and polymethyl methacrylate, and monomer electrolyte.
摘要:
A fixing rotating member configured to, together with a pressure member, pinch and transport a recording material carrying an image includes a base material and a releasing layer, wherein the releasing layer is made of at least one fluorine resin selected from among tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, ethylene-tetrafluoroethylene copolymer, and tetrafluoroethylene-hexafluoropropylene copolymer, the fluorine resin containing at least one type of polymer selected from among polyvinylidene fluoride, polyacrylonitrile, and polymethyl methacrylate, and monomer electrolyte.
摘要:
An image forming apparatus includes a diode for restraining deterioration of an electric discharge device caused when a voltage applied to a discharge electrode and a shield electrode is switched. By switching the voltage at only one position using the diode, both of the voltage applied to the discharge electrode and the voltage applied to the shield electrode can be switched simultaneously.
摘要:
The present invention provides a method for producing a porous silica ceramic material, wherein the method includes a step of forming a mixture including silica particles, a binder and a plasticizer, a step of imparting porosity to a green obtained by the forming of the mixture, by extracting the plasticizer from the green, a step of impregnating the green to which the porosity has been imparted with a sintering aid, and a step of firing the green impregnated with the sintering aid.
摘要:
An image forming apparatus includes a diode for restraining deterioration of an electric discharge device caused when a voltage applied to a discharge electrode and a shield electrode is switched. By switching the voltage at only one position using the diode, both of the voltage applied to the discharge electrode and the voltage applied to the shield electrode can be switched simultaneously.
摘要:
A reinforcing material for proton conductive membrane, comprising a nonwoven fabric including, as essential components thereof, glass fibers having a C-glass composition and a binder for strengthening bonding between the glass fibers. The average fiber diameter of the glass fibers is in a range of 0.1 μm to 20 μm, and the average fiber length of the glass fibers is in a range of 0.5 mm to 20 mm. According to the present invention, a reinforcing material excellent in heat resistance, acid resistance, and dimensional stability can be obtained.