Abstract: An inkjet recording device, wherein air can be retained in an ink supply pipe by using a simple structure without applying substantial changes to the inkjet recording device, a variation in an ink supply pressure is mitigated by the retained air, and ink can be ejected with high stability. An inkjet recording device is provided with an inkjet head for ejecting ink, an ink flow path for supplying the ink, which is supplied from an ink supply source, to a pressure chamber of the inkjet head and having at least a portion thereof constructed from an ink supply pipe, and an air retaining member inserted in the ink supply pipe, with the ink allowed to pass through the air retaining member, and retaining air in at least a portion of a space formed between the air retaining member and the inner surface of the ink supply pipe.

Abstract: Provided are an inkjet recording device and an inkjet recording method for providing an image wherein concentration nonuniformity is reduced with less ink bleed between inks of different colors, in high speed multicolor printing of single path system. In the device and the method, a conditional expression of 0.6?R/R0?0.9 is satisfied, where, R is a dot radius of a second ink jetted on a first ink which is jetted on the recording medium and semi-cured by a beam applied, and R0 is a dot radius of the second ink directly jetted on the recording medium.

Abstract: An inkjet recording device, wherein air can be retained in an ink supply pipe by using a simple structure without applying substantial changes to the inkjet recording device, a variation in an ink supply pressure is mitigated by the retained air, and ink can be ejected with high stability. An inkjet recording device is provided with an inkjet head for ejecting ink, an ink flow path for supplying the ink, which is supplied from an ink supply source, to a pressure chamber of the inkjet head and having at least a portion thereof constructed from an ink supply pipe, and an air retaining member inserted in the ink supply pipe, with the ink allowed to pass through the air retaining member, and retaining air in at least a portion of a space formed between the air retaining member and the inner surface of the ink supply pipe.

Abstract: An inkjet head, comprises an ink jetting chamber unit in which a plurality of ink jetting chambers to jet ink from respective nozzles is arranged along at least one array; a manifold to distribute ink to the plurality of ink jetting chambers; a first ink flow path to supply ink from the outside to the manifold; an air chamber structured to form an air-liquid interface at which air contacts with ink in the air chamber; and a second ink flow path branched from the first ink flow path and connected to the air chamber.

Abstract: Provided are an inkjet recording device and an inkjet recording method for providing an image wherein concentration nonunifomiity is reduced with less ink bleed between inks of different colors, in high speed multicolor printing of single path system. In the device and the method, a conditional expression of 0.6?R/R0?0.9 is satisfied, where, R is a dot radius of a second ink jetted on a first ink which is jetted on the recording medium and semi-cured by a beam applied, and R0 is a dot radius of the second ink directly jetted on the recording medium.

Abstract: An inkjet head, comprises an ink jetting chamber unit in which a plurality of ink jetting chambers to jet ink from respective nozzles is arranged along at least one array; a manifold to distribute ink to the plurality of ink jetting chambers; a first ink flow path to supply ink from the outside to the manifold; an air chamber structured to form an air-liquid interface at which air contacts with ink in the air chamber; and a second ink flow path branched from the first ink flow path and connected to the air chamber.

Abstract: An ink-jet head to jet ink from a front side thereof includes an actuator in which a plurality of parallel channels for generating pressure change to be applied to ink are formed and having a nozzle surface on which a plurality of nozzle holes are formed to jet ink from a corresponding ink channel, and a front plate located at the front side of the nozzle surface so as to protect the nozzle surface and having a recessed section on a front surface of the front plate, wherein the recessed section has an opening in which the nozzle surface of the actuator is inserted in such a way that the nozzle surface is located between the front surface of the front plate and the bottom surface of the recessed section.

Abstract: An inkjet head having: an inkjet head chip having ink jetting openings which are lined up to form a nozzle row on a front surface of the inkjet head chip; a manifold attached securely to a side of the inkjet head chip and leading ink to the inkjet head chip; and an ink heater which is in thermal contact through the manifold with ink in the manifold and which varies in heat generation density in a direction of the nozzle row.

Abstract: A method for manufacturing a supercharger rotor by casting a profile portion of a supercharger rotor and a shaft penetrating the same, having the steps of: first cutting a left and right helical cross portion on a surface of the shaft connected to the profile portion, wherein the cross portion includes a right handed helical groove and a left handed helical groove, and these grooves cross each other; and casting the profile portion around the shaft in die-casting. In this way, a plurality of profile portion divided metal molds surround a profile portion and end metal molds surround both rotor ends. A helical core is attached to one end mold to pass through the profile portion. A rotor-shaped cavity forms inside the molds. Hot metal is pressurized, injected and solidified in the cavity, and the end mold having the helical core is pulled out by rotation along a helical line.

Abstract: An ink-jet head to jet ink from a front side thereof includes an actuator in which a plurality of parallel channels for generating pressure change to be applied to ink are formed and having a nozzle surface on which a plurality of nozzle holes are formed to jet ink from a corresponding ink channel, and a front plate located at the front side of the nozzle surface so as to protect the nozzle surface and having a recessed section on a front surface of the front plate, wherein the recessed section has an opening in which the nozzle surface of the actuator is inserted in such a way that the nozzle surface is located between the front surface of the front plate and the bottom surface of the recessed section.

Abstract: An inkjet head having: an inkjet head chip having ink jetting openings which are lined up to form a nozzle row on a front surface of the inkjet head chip; a manifold attached securely to a side of the inkjet head chip and leading ink to the inkjet head chip; and an ink heater which is in thermal contact through the manifold with ink in the manifold and which varies in heat generation density in a direction of the nozzle row.

Abstract: A plurality of profile portion divided metal molds 12 surround a profile portion 11a of a supercharger rotor 11 to allow division. A pair of end metal molds 14 and 15 surround both ends of the rotor. A helical core 16 is attached to one end metal mold 14 so as to be helically passed through the profile portion of the rotor. A rotor-shaped cavity 13 is formed inside by the profile portion divided metal molds, and the end metal molds. Hot metal is pressurized, and injected and solidified in the cavity. Then, the end metal mold 14 having the helical core is pulled out by being rotated along a helical line.

Abstract: A plurality of profile portion divided metal molds 12 surround a profile portion 11a of a supercharger rotor 11 to allow division. A pair of end metal molds 14 and 15 surround both ends of the rotor. A helical core 16 is attached to one end metal mold 14 so as to be helically passed through the profile portion of the rotor. A rotor-shaped cavity 13 is formed inside by the profile portion divided metal molds, and the end metal molds. Hot metal is pressurized, and injected and solidified in the cavity. Then, the end metal mold 14 having the helical core is pulled out by being rotated along a helical line.

Abstract: Provided is a method of manufacturing a semiconductor device in which various kinds of processing conditions such as the polishing time in a CMP step can be always provided most appropriate against a wafer of a product lot even if there is an error in the film thickness or the like generated in a CVD step performed prior to the CMP step. The processing conditions in the CMP step are provided based on the film thickness formed in the prior CVD step. Thereby, even if there is an error in the film thickness generated in the CVD step, the processing conditions in the CMP step are provided most appropriate with the consideration of the error. In detail, based on the CVD film thickness and the target value, a processing condition calculator performs calculation of the actual amount of polishing of the present lot. Then, the processing condition calculator performs calculation based on the data, and the searched polishing rate or the searched updated value. Thereby, the polishing time is calculated.

Abstract: When trying to keep the amount of a liquid treating chemical in a treating bath constant by discharging almost the same amount of the liquid treating chemical as the liquid treating chemical supplied, the flow of the liquid treating chemical in the treating bath fell into disorder, which made it hard to keep the flow of the liquid treating chemical in the treating bath in the laminar state. A down-flow type chemical treating apparatus 1 in which a liquid treating chemical 21 is supplied from the outside of a treating bath 2 (main bath 3) while the liquid treating chemical 21 is discharged from the bottom portion of the treating bath 2 (main bath 3), comprising a pump 5 on the chemical discharging side of the main bath 3 which consists of a rotary pump allowing to discharge the liquid treating chemical 21 to the outside of the main bath 3 keeping the flow of the liquid treating chemical 21 substantially in the main bath 3 almost in the laminar state.

Abstract: A plurality of profile portion divided metal molds 12 surround a profile portion 11a of a supercharger rotor 11 to allow division. A pair of end metal molds 14 and 15 surround both ends of the rotor. A helical core 16 is attached to one end metal mold 14 so as to be helically passed through the profile portion of the rotor. A rotor-shaped cavity 13 is formed inside by the profile portion divided metal molds, and the end metal molds. Hot metal is pressurized, and injected and solidified in the cavity. Then, the end metal mold 14 having the helical core is pulled out by being rotated along a helical line.

Abstract: In a liquid jetting apparatus provided with a head provided with a liquid jetting section; a feeding section for feeding a liquid to the head; and a control section for controlling the liquid jetting section to jet the liquid such that a jetting trace of the liquid is recorded on a recording medium; the liquid jetting apparatus is further provided with a liquid ejecting section for varying a pressure in the head in plural steps so as to eject the liquid in the head from the liquid jetting section.

Abstract: When trying to keep the amount of a liquid treating chemical in a treating bath constant by discharging almost the same amount of the liquid treating chemical as the liquid treating chemical supplied, the flow of the liquid treating chemical in the treating bath fell into disorder, which made it hard to keep the flow of the liquid treating chemical in the treating bath in the laminar state. A down-flow type chemical treating apparatus 1 in which a liquid treating chemical 21 is supplied from the outside of a treating bath 2 (main bath 3) while the liquid treating chemical 21 is discharged from the bottom portion of the treating bath 2 (main bath 3), comprising a pump 5 on the chemical discharging side of the main bath 3 which consists of a rotary pump allowing to discharge the liquid treating chemical 21 to the outside of the main bath 3 keeping the flow of the liquid treating chemical 21 substantially in the main bath 3 almost in the laminar state.

Abstract: In a rotation detection apparatus, a magnetism pattern section provided with plural magnetic poles and a FG (frequency generating) pattern section provided with plural toothed wire circuits are located so as to face each other. When either one of the magnetism pattern section and the FG pattern section is rotated together with a rotating member, plural wave signals are electrically induced in the plural toothed wire circuits. A signal processing cicuit synthesizes the plural wave signals so as to output a multiplication signal and detects the rotation of the rotating member based on the multiplication signal.