Abstract: A fluid control valve includes a diaphragm assembly including a shaft member joined to an end of a drive shaft on the side near an annular valve seat, a membrane member made of perfluoro alkoxy alkane and located in surface contact with the end face of the shaft member on the opposite side to the end joined to the drive shaft, and a weld part formed by laser welding at the interface between the shaft member and the membrane member to join the shaft member and the membrane member. The shaft member is made of fluorine resin with carbon-based additive dispersed.

Abstract: An input device includes: a rotating member that rotates about a predetermined rotation axis; and a mover that includes a protrusion protruding toward an inner peripheral surface of the rotating member and moves in a direction different from a rotation direction of the rotating member along with rotation of the rotating member. The protrusion protrudes toward an inner peripheral surface of the rotating member. The rotating member includes a first projection and a second projection that project from the inner peripheral surface toward the mover. The protrusion of the mover is inclined with respect to the predetermined rotation axis and disposed between the first projection and the second projection.

Abstract: A rotational angle detection device includes a first gear that rotates about a first rotation axis and that has a main surface having an annular shape that crosses the first rotation axis and a plurality of first teeth provided on the main surface; a second gear that rotates about a second rotation axis in engagement with the first gear and that has a larger number of second teeth than the first teeth; and a sensor that detects a rotational angle of the second gear. The second rotation axis extends in a direction orthogonal to both of a virtual line that connects a center of the first gear and a position where the first gear and the second gear are engaged with each other, and the first rotation axis. Each of the first teeth extends so as to shift from an outer side toward an inner side in a radial direction of the main surface as it shifts along a circumferential direction of the main surface. Adjacent two of the first teeth are disposed so as to overlap each other in the radial direction.

Abstract: A rotational angle detection device includes a first gear that rotates about a first rotation axis and that has a main surface having an annular shape that crosses the first rotation axis and a plurality of first teeth provided on the main surface; a second gear that rotates about a second rotation axis in engagement with the first gear and that has a larger number of second teeth than the first teeth; and a sensor that detects a rotational angle of the second gear. The second rotation axis extends in a direction orthogonal to both of a virtual line that connects a center of the first gear and a position where the first gear and the second gear are engaged with each other, and the first rotation axis. Each of the first teeth extends so as to shift from an outer side toward an inner side in a radial direction of the main surface as it shifts along a circumferential direction of the main surface. Adjacent two of the first teeth are disposed so as to overlap each other in the radial direction.

Abstract: Provided is a chlorinated polyether which has excellent solubility in solvents and excellent thermal stability, has the excellent effect of improving the adhesion of coating materials, inks, and adhesives to polyolefins, can be expected to be usable as a flame retardant, and is useful also as a novel starting material for polyurethanes. The polyether is a novel chlorinated polyether containing, as a repeating unit, at least one of the chlorinated-ether residue represented by the following formula (1) and the chlorinated-ether residue represented by the following formula (2). Also provided is a novel polyurethane obtained therefrom.

Abstract: Provided is a chlorinated polyether which has excellent solubility in solvents and excellent thermal stability, has the excellent effect of improving the adhesion of coating materials, inks, and adhesives to polyolefins, can be expected to be usable as a flame retardant, and is useful also as a novel starting material for polyurethanes. The polyether is a novel chlorinated polyether containing, as a repeating unit, at least one of the chlorinated-ether residue represented by the following formula (1) and the chlorinated-ether residue represented by the following formula (2). Also provided is a novel polyurethane obtained therefrom.

Abstract: A water base ink for ink-jet recording contains a self-dispersible coloring agent, a propylene glycol ether, and a surfactant represented by the following general formula (3): R1—O—(CH2CH2O)n—SO3M??(3) wherein R1 represents an alkyl group having a number of carbon atoms of 12 to 15, M represents Na or triethanolamine, and n represents an integer of 2 to 4, and wherein the propylene glycol ether is dipropylene glycol propyl ether. The ink satisfies three requirements of i) the satisfactory initial introduction performance of the ink into an ink flow passage of a stacked type printer head, ii) the prevention of the occurrence of feathering, and iii) the prevention of the insufficient spread of the ink.

Abstract: A rotation angle detector includes a rotator, first and second detecting bodies, an auxiliary detecting body, first and second detectors, an auxiliary detector, and a controller. The first detecting body rotates in association with the rotator, and the first detector detects rotation of the first detecting body. The second detecting body rotates in association with the first detecting body at a different speed therefrom, and the second detector detects rotation of the second detecting body. The auxiliary detecting body is engaged with the rotator at a position symmetrical to the first detecting body with respect to a rotation axis of the rotator. The auxiliary detector detects rotation of the auxiliary detecting body. The controller detects a rotation angle of the rotator based on detection signals from the first, second, and auxiliary detectors.

Abstract: A rotation angle detector includes a rotator, first and second detecting bodies, an auxiliary detecting body, first and second detectors, an auxiliary detector, and a controller. The first detecting body rotates in association with the rotator, and the first detector detects rotation of the first detecting body. The second detecting body rotates in association with the first detecting body at a different speed therefrom, and the second detector detects rotation of the second detecting body. The auxiliary detecting body is engaged with the rotator at a position symmetrical to the first detecting body with respect to a rotation axis of the rotator. The auxiliary detector detects rotation of the auxiliary detecting body. The controller detects a rotation angle of the rotator based on detection signals from the first, second, and auxiliary detectors.

Abstract: An ink for ink-jet recording contains tripropylene glycol normal butyl ether or dipropylene glycol normal propyl ether, an acrylic polymer, a water-insoluble coloring agent, and water. The ink simultaneously satisfies the straight travel stability of ink droplets during the discharge with an ink-jet recording apparatus, the recovery performance upon introduction into a recording head of the ink-jet recording apparatus, the fixation performance of printed matters, and the drying performance after the printing.

Abstract: A water base pigment ink for ink-jet recording contains a pigment, water, and at least one of polyethylene glycol and diglycerol. The ink is solidified into a solid matter when the water is evaporated. Further, the solid matter is redissolved in the unsolidified water base pigment ink for ink-jet recording. When the ink is used, then neither clog-up of a nozzle nor discharge failure is caused, no load is imposed by the solidified ink on the maintenance system such as the wiping equipment, and the sticking performance on the paper is satisfactory.

Abstract: A water base ink for ink-jet recording is provided, which is excellent in time-dependent stability of ink characteristics, which can be stably jetted over a long period of time, and which makes it possible to perform the high quality recording. The water base ink for ink-jet recording contains a self-dispersing type water-insoluble particulate coloring agent, a compound represented by the following formula (1), a surfactant having a nitrogen atom in a molecule, water, and a water-soluble organic solvent, wherein a surface tension is 30 to 50 mN/m, and a ratio of change of the surface tension after storage at 60° C. for 2 weeks is less than 5%: R1—O—(CH2CH2O)x—SO3Na??(1) wherein R1 represents an alkyl group and x is 20 to 30 in the formula (1).

Abstract: A water base ink for ink-jet recording contains a dispersible coloring agent, a propylene glycol ether, and a surfactant composed of a random copolymer represented by the following general formula (1):

Abstract: A water base pigment ink for ink-jet recording contains a pigment, water, and at least one of polyethylene glycol and diglycerol. The ink is solidified into a solid matter when the water is evaporated. Further, the solid matter is redissolved in the unsolidified water base pigment ink for ink-jet recording. When the ink is used, then neither clog-up of a nozzle nor discharge failure is caused, no load is imposed by the solidified ink on the maintenance system such as the wiping equipment, and the sticking performance on the paper is satisfactory.

Abstract: A water base ink for ink-jet recording, which is usable for an ink-jet recording apparatus having an ink-jet head provided therein with an ink flow passage formed of nickel or nickel alloy, includes a coloring agent, water, and a water-soluble organic solvent. The ink is blended so that a current density, which is obtained within an electric potential range of −600 to +300 mV, is not more than 100 &mgr;A/cm2 when anodic polarization measurement is performed by using a reference electrode of silver/silver chloride, a counter electrode of platinum, and a working electrode of nickel or nickel alloy. The ink does not corrode any part for constituting the flow passage in the ink-jet head.

Abstract: A water base ink for ink-jet recording is provided, which is excellent in time-dependent stability of ink characteristics, which can be stably jetted over a long period of time, and which makes it possible to perform the high quality recording. The water base ink for ink-jet recording contains a self-dispersing type water-insoluble particulate coloring agent, a compound represented by the following formula (1), a surfactant having a nitrogen atom in a molecule, water, and a water-soluble organic solvent, wherein a surface tension is 30 to 50 mN/m, and a ratio of change of the surface tension after storage at 60° C.

Abstract: An ink for ink-jet recording contains tripropylene glycol normal butyl ether or dipropylene glycol normal propyl ether, an acrylic polymer, a water-insoluble coloring agent, and water. The ink simultaneously satisfies the straight travel stability of ink droplets during the discharge with an ink-jet recording apparatus, the recovery performance upon introduction into a recording head of the ink-jet recording apparatus, the fixation performance of printed matters, and the drying performance after the printing.

Abstract: A water base ink for ink-jet recording, which is usable for an ink-jet recording apparatus having an ink-jet head provided therein with an ink flow passage formed of nickel or nickel alloy, comprises a coloring agent, water, and a water-soluble organic solvent. The ink is blended so that a current density, which is obtained within an electric potential range of −600 to +300 mV, is not more than 100 &mgr;A/cm2 when anodic polarization measurement is performed by using a reference electrode of silver/silver chloride, a counter electrode of platinum, and a working electrode of nickel or nickel alloy. The ink does not corrode any part for constituting the flow passage in the ink-jet head.