Abstract: A pellet used for spectrometry is manufactured by, for example, mixing polyethylene powder having an average particle size not greater than 35 ?m with powder of an analysis target, and compressing the mixture. A sample pellet (B) prepared by compacting only polyethylene powder having an average particle size not grater than 35 ?m exhibits a high transmittance in the wave number range of 10-340 cm?1. In spectrometry using a pellet of the present invention, spectrum waveform of the analysis target material at a range of wave number 140-250 cm?1 is measured.

Abstract: In a lamp lighting apparatus for lighting a high intensity discharge lamp, which is used for a projector, it is possible to carry out high speed modulation of brightness of the discharge lamp, in synchronization with a conversion operation to sequential color light flux which is carried out by using a dynamic filter such as a rotation color wheel, and it is also possible to switch modulation patterns by electric control. A lamp current detection signal conversion circuit has two or more switching elements whose ON/OFF state is controlled corresponding to truth/false of respective bits of modulation signal, in which a gain can be changed by a combination of truth and false of the respective bits of the modulation signal. When a modulation switching timing signal is received, an original modulation signal is updated by selecting a bit set corresponding to a value counted by a modulation change count section.

Abstract: An operating circuit for a discharge lamp having an external auxiliary electrode and main discharge electrodes in a discharge space, in which the disadvantage of lamp damage due to detachment of glass material, such as silica glass or the like, of a hermetically sealed portion of the discharge vessel from the electrode material in alternating current operation of a discharge lamp is prevented by a feed circuit having an inverter, and a trigger circuit for supply of a pulsed current to the primary winding of a high voltage transformer with an autotransformer arrangement for applying a high voltage to the auxiliary electrode in which the electrical potential of the trigger terminals is maintained essentially at the same electrical potential as the output line on the low voltage side of the feed circuit when the trigger circuit is inoperative.

Abstract: The present invention aims to provide coated printing paper having good printing quality combined with the property of decomposing hazardous substances upon exposure to light and resistance to fading. Coated printing paper comprising a coating layer containing a pigment and an inorganic adhesive and an organic adhesive on a base paper, wherein the coating layer contains 1-30 parts by weight of titanium dioxide having an average secondary particle diameter of 300-2000 nm per 100 parts by weight of the pigment and the coated paper has a PPS roughness of 0.5-5.0 ?m.

Abstract: The present invention provides a blood cell separation membrane for separating blood into serum or plasma and blood cells while preventing hemolysis of the blood cells. Such a blood cell separation membrane can be obtained by impregnating a porous membrane for separating blood cells from blood supplied thereto with a solution containing a hydrophobic aminocarboxylic acid, a protein derived from silk, Tris, TES, ?-aminohexanoic acid, tranexanmic acid, or heparin and then drying the membrane.

Abstract: A discharge lamp lighting device can reduce a variation in luminous flux at the time when the polarity of a voltage to be applied to the discharge lamp is inverted, prevent an excessively large amount of current from flowing through the discharge lamp at the time of starting, prevent the fade-out of discharge when the discharge mode returns from an arc discharge mode to a glow discharge mode, and reduce the ripple of a lamp current in a normal lighting mode. A coil is provided in an output current path of a power supply circuit comprising, for example, a step-down chopper, and a smoothing capacitor is provided in the next stage of the coil so that it selectively is turned on or off by a switching element. An inverter comprising, for example, a full bridge is provided in the next stage of the smoothing capacitor.

Abstract: A discharge lamp lighting apparatus for lighting a discharge lamp, comprises an inverter which reverses a polarity of an output voltage and applies alternating voltage to the discharge lamp, and an inverter control circuit which generates an inverter control signal defining a polarity reversal operation of the inverter, based on a polarity reversal timing signal, wherein when the number of polarity reversals in one cycle of the polarity reversal timing signal is even, the inverter control circuit intermittently performs a first operation in which successive pulse-like part of the polarity reversal operation based on the polarity reversal timing signal is disregarded by odd number of times.

Abstract: In a discharge lamp lighting apparatus, increase modulation on lamp current with a pulse is carried out according to a modulation signal. At a start-up of the discharge lamp or immediately thereafter, the increase modulation is restrained, and in a lighting steady state of the discharge lamp, the restraining of the increase modulation is released, and wherein when the restraining of the increase modulation is released, in a transition period from immediately after the start-up of the discharge lamp to the lighting steady state, the restraining of increase modulation is gradually released.

Abstract: To avoid the phenomenon of unsightly flickering in images projected by the projector, in high pressure discharge lamps—especially in high intensity discharge lamps, such as high pressure mercury lamps, metal halide lamps, and xenon lamps—that are used in projectors, even in the presence of the phenomenon of cyclical modulation of the lamp voltage by the returning the light spectrum when the light reflected by the dynamic color filter returns back through the optical system to the lamp, at least during steady operation of the discharge lamp (Ld), a target lamp current signal generation circuit (Up) acquires multiple lamp voltage detection signal (Sv) over a period that is at least as long as the color order cycle of the dynamic color filter (Of) and generates a target lamp current signal (St) based on the multiple lamp voltage detection signals (Sv) that were acquired.

Abstract: In a discharge lamp lighting apparatus for lighting a discharge lamp comprises a starter which generates high voltage at initiation so as to generate dielectric breakdown in the discharge container of the discharge lamp; and a power supply circuit which supply discharge current to the discharge lamp, wherein the power supply circuit has an output current modulation circuit which modulates a magnitude of current flowing through the discharge lamp at least in a steady state, wherein the output current modulation circuit controls a change speed in case a lamp current per square millimeter in a cross section of the cathode electrode is increased, to be 3.9 A per millisecond or less, wherein the power supply circuit carries out control in which an average current in the steady state is set so that an odd-shape portion is formed at a tip of the cathode electrode.

Abstract: The present discharge lamp lighting device is capable of rapid modulation in which a lamp current is rapidly reduced and rapidly restored. The current control circuit is provided to perform specific current control such that the brightness of a lamp is reduced by a predetermined percentage without being affected by a variation or change in lamp voltage over time, thereby reducing a lamp current.

Abstract: To provide a discharge lamp ignition device to light high-intensity discharge lamps in which, during alternating current ignition, the fluctuation of luminous flux on the reversal of polarity of the voltage impressed on the lamp is minimized and in which steady lighting characteristics of the discharge at startup are secured, a discharge lamp ignition device has a capacitor Ch connected to a transformer Th and an intermittent voltage impression arrangement Uj to drive voltage impression on the primary winding Ph, with the secondary winding Sh of the transformer Th constituted so that the voltage generated in the secondary winding Sh can be impressed overlapping the output voltage of an inverter Ui between the electrodes of the discharge lamp Ld by interposing it in the path connecting the output of the inverter Ui and the electrode for the main discharge of the discharge lamp Ld.

Abstract: A discharge lamp lighting device can reduce a variation in luminous flux at the time when the polarity of a voltage to be applied to the discharge lamp is inverted, prevent an excessively large amount of current from flowing through the discharge lamp at the time of starting, prevent the fade-out of discharge when the discharge mode returns from an arc discharge mode to a glow discharge mode, and reduce the ripple of a lamp current in a normal lighting mode. A coil is provided in an output current path of a power supply circuit comprising, for example, a step-down chopper, and a smoothing capacitor is provided in the next stage of the coil so that it selectively is turned on or off by a switching element. An inverter comprising, for example, a full bridge is provided in the next stage of the smoothing capacitor.

Abstract: The present discharge lamp lighting device is capable of rapidly breaking or restoring a lamp current or of rapidly reducing or restoring the lamp current. A discharge lamp lighting device, comprises a power supply circuit which supplies power to a discharge lamp, a current breaking switch circuit which selectively interrupts a current flowing through the discharge lamp, a lamp condition detector which detects a condition of the discharge lamp, a target signal generating circuit which generates a target signal for lighting the discharge lamp in a predetermined condition, based on an output from the lamp condition detector, and a target signal holding circuit which selectively holds the target signal, wherein when the current is interrupted by the current breaking switch circuit, the target signal holding circuit holds the target signal.

Abstract: In a discharge lamp lighting apparatus for lighting a discharge lamp comprises a starter which generates high voltage at initiation so as to generate dielectric breakdown in the discharge container of the discharge lamp; and a power supply circuit which supply discharge current to the discharge lamp, wherein the power supply circuit has an output current modulation circuit which modulates a magnitude of current flowing through the discharge lamp at least in a steady state, wherein the output current modulation circuit controls a change speed in case a lamp current per square millimeter in a cross section of the cathode electrode is increased, to be 3.9 A per millisecond or less, wherein the power supply circuit carries out control in which an average current in the steady state is set so that an odd-shape portion is formed at a tip of the cathode electrode.

Abstract: In a lamp lighting apparatus for lighting a high intensity discharge lamp, which is used for a projector, it is possible to carry out high speed modulation of brightness of the discharge lamp, in synchronization with a conversion operation to sequential color light flux which is carried out by using a dynamic filter such as a rotation color wheel, and it is also possible to switch modulation patterns by electric control. A lamp current detection signal conversion circuit has two or more switching elements whose ON/OFF state is controlled corresponding to truth/false of respective bits of modulation signal, in which a gain can be changed by a combination of truth and false of the respective bits of the modulation signal. When a modulation switching timing signal is received, an original modulation signal is updated by selecting a bit set corresponding to a value counted by a modulation change count section.

Abstract: To provide a discharge lamp ignition device to light high-intensity discharge lamps in which, during alternating current ignition, the fluctuation of luminous flux on the reversal of polarity of the voltage impressed on the lamp is minimized and in which steady lighting characteristics of the discharge at startup are secured, a discharge lamp ignition device has a capacitor Ch connected to a transformer Th and an intermittent voltage impression arrangement Uj to drive voltage impression on the primary winding Ph, with the secondary winding Sh of the transformer Th constituted so that the voltage generated in the secondary winding Sh can be impressed overlapping the output voltage of an inverter Ui between the electrodes of the discharge lamp Ld by interposing it in the path connecting the output of the inverter Ui and the electrode for the main discharge of the discharge lamp Ld.

Abstract: To avoid the phenomenon of unsightly flickering in images projected by the projector, in high pressure discharge lamps—especially in high intensity discharge lamps, such as high pressure mercury lamps, metal halide lamps, and xenon lamps—that are used in projectors, even in the presence of the phenomenon of cyclical modulation of the lamp voltage by the returning the light spectrum when the light reflected by the dynamic color filter returns back through the optical system to the lamp, at least during steady operation of the discharge lamp (Ld), a target lamp current signal generation circuit (Up) acquires multiple lamp voltage detection signal (Sv) over a period that is at least as long as the color order cycle of the dynamic color filter (Of) and generates a target lamp current signal (St) based on the multiple lamp voltage detection signals (Sv) that were acquired.

Abstract: A resonant transformer is disposed at a stage following an inverter for inverting the polarity of a voltage applied to a discharge lamp. A parallel resonant circuit is formed by a resonant capacitor and a primary winding of the resonant transformer, and a periodic voltage applying section is connected to the parallel resonant circuit. The periodic voltage applying section is operated at a frequency that causes resonance in the parallel resonant circuit, thereby applying a high AC voltage to the discharge lamp in a period in which discharge is started in the discharge lamp.

Abstract: A resonant transformer is disposed at a stage following an inverter for inverting the polarity of a voltage applied to a discharge lamp. A parallel resonant circuit is formed by a resonant capacitor and a primary winding of the resonant transformer, and a periodic voltage applying section is connected to the parallel resonant circuit. The periodic voltage applying section is operated at a frequency that causes resonance in the parallel resonant circuit, thereby applying a high AC voltage to the discharge lamp in a period in which discharge is started in the discharge lamp.