Abstract: Provided are a head life evaluation apparatus and method capable of evaluating lifespans of nozzles by using a plurality of chambers having different environments, the head life evaluation apparatus including a head block including at least one first nozzle for ejecting a treatment liquid in an inkjet manner, and a chamber block detachably coupled to the head block and including at least one first chamber corresponding to the first nozzle to evaluate a lifespan of the first nozzle in a first environment.

Abstract: A maintenance assembly for an inkjet head may include a housing having an upper face facing a nozzle face on which nozzles for discharging a chemical liquid on a substrate are arranged, and an atmosphere generating part for providing an atmosphere including humidity around the nozzles and the nozzle face such that a humidity of the nozzles and a humidity of the nozzle face are adjusted to a set humidity if the humidity of the nozzles and the humidity of the nozzle face are different from the set humidity.

Abstract: An inkjet head management apparatus for managing a humidity of an inkjet head including nozzles for ejecting droplets in an inkjet manner includes a housing having an opening on at least one surface thereof, a closer for opening or closing the opening of the housing, and a dehumidifier disposed in the housing to provide a dehumidifying atmosphere toward the opening when the opening is opened.

Abstract: A maintenance assembly for an inkjet head may include a housing having an upper face facing a nozzle face on which nozzles for discharging a chemical liquid on a substrate are arranged, and a fluid supplying part for providing a humidity control fluid onto the nozzles and the nozzle face such that a humidity of the nozzles and a humidity of the nozzle face are adjusted to a set humidity if the humidity of the nozzles and the humidity of the nozzle face are different from the set humidity.

Abstract: A maintenance assembly for an inkjet head may include a housing having an upper face facing a nozzle face on which nozzles for discharging a chemical liquid on a substrate are arranged, and an atmosphere generating part for providing an atmosphere including humidity around the nozzles and the nozzle face such that a humidity of the nozzles and a humidity of the nozzle face are adjusted to a set humidity if the humidity of the nozzles and the humidity of the nozzle face are different from the set humidity.

Abstract: An inkjet head management apparatus for managing a humidity of an inkjet head including nozzles for ejecting droplets in an inkjet manner includes a housing having an opening on at least one surface thereof, a closer for opening or closing the opening of the housing, and a dehumidifier disposed in the housing to provide a dehumidifying atmosphere toward the opening when the opening is opened.

Abstract: Provided are a head life evaluation apparatus and method capable of evaluating lifespans of nozzles by using a plurality of chambers having different environments, the head life evaluation apparatus including a head block including at least one first nozzle for ejecting a treatment liquid in an inkjet manner, and a chamber block detachably coupled to the head block and including at least one first chamber corresponding to the first nozzle to evaluate a lifespan of the first nozzle in a first environment.

Abstract: The present invention relates to a digital sight for a hand-carried projectile-firing device and a method of controlling the digital sight. A digital sight for a hand-carried projectile-firing device according to an embodiment of the present invention is a digital sight for a hand-carried projectile-firing device, the digital sight including an inertial sensor package and a manual rotation device, wherein the inertial sensor package includes a gyroscope and an accelerometer module. In accordance with the present invention, equipment for measuring the firing direction of a hand-carried projectile-firing device such as a mortar is replaced with a digital sight for a hand-carried projectile-firing device, which reduces an estimation error while using a single medium-low level gyroscope, thus enabling the projectile-firing device to precisely and promptly fire a projectile and improving the operability thereof.

Abstract: The present invention relates to a digital sight for a hand-carried projectile-firing device and a method of controlling the digital sight. A digital sight for a hand-carried projectile-firing device according to an embodiment of the present invention is a digital sight for a hand-carried projectile-firing device, the digital sight including an inertial sensor package and a manual rotation device, wherein the inertial sensor package includes a gyroscope and an accelerometer module. In accordance with the present invention, equipment for measuring the firing direction of a hand-carried projectile-firing device such as a mortar is replaced with a digital sight for a hand-carried projectile-firing device, which reduces an estimation error while using a single medium-low level gyroscope, thus enabling the projectile-firing device to precisely and promptly fire a projectile and improving the operability thereof.

Abstract: In a printing method using an ink jet head unit including a plurality of ink jet heads disposed in a horizontal direction over an object in which each of adjacent end portions of the plurality of ink jet heads has more than one overlapped nozzle, a supply of droplets from each of the nozzles of the plurality of ink jet heads may be identified. A combination of supplies of the droplets from the nozzles of the plurality of ink jet heads may be determined to form a desired pattern on the object. The desired pattern may be formed on the object using the plurality of ink jet heads including the nozzles arranged in accordance with the determined combination of the supplies of the droplets.

Abstract: Disclosed herein is a digital sight for a manually-portable shell-firing mortar. The digital sight includes a first accelerometer, a second accelerometer arranged perpendicular to the first accelerometer, a gyroscope arranged perpendicular to the first and second accelerometer, and a controller configured to calculate and display a re-firing direction varied from a primary-firing direction, using the first and second accelerometers and the gyroscope.

Abstract: A system for producing carbon nanotubes includes a reaction chamber in which a process is performed for producing a carbon nanotube on a synthetic substrate; a station part disposed at one side of the reaction chamber and provided with a first transporter for loading/unloading the synthetic substrate to/from the reaction chamber; a first transporter installed inside the station part for loading/unloading synthetic substrates to/from the reaction chamber; a substrate accommodating part in which a substrate to be loaded to the reaction chamber is accommodated or a synthetic substrate unloaded from the reaction chamber waits; a retrieve part for drawing out a synthetic substrate from the substrate accommodating part to retrieve a carbon nanotube produced on the synthetic substrate; a catalyst coating unit configured for coating a synthetic substrate with a catalyst before the synthetic substrate is accommodated in the substrate accommodating part of the station part; and a second transporter for transporting a s

Abstract: Provided is an apparatus for producing carbon nanotubes. The apparatus includes a reaction chamber and a rotating member. The reaction chamber provides a reaction space in which metal catalysts and a source gas react with one another to produce carbon nanotubes. The rotating member increases fluidizing of the metal catalysts in the reaction space to increase productivity and raise the gas conversion rate, thereby reducing the price of carbon nanotubes and preventing adhering of metal catalysts to the sidewall of the reaction chamber.

Abstract: In an apparatus and method of generating a carbon nanotube (CNT), a process chamber is heated to a target temperature and a catalyst powder is supplied into the heated process chamber. The catalyst powder moves in a first direction in the process chamber. A source gas is supplied into the process chamber in a second direction opposite to the first direction, so that the source gas delays the movement of the catalyst powder in the first direction and is reacted with the catalyst powder in the process chamber to thereby produce the CNT in the process chamber. Accordingly, the flow of the source gas against the flow of the catalyst powder reduces the drop velocity of the catalyst powder. Therefore, the source gas and the catalyst powder may be reacted with each other for a sufficiently long time.

Abstract: Provided are an apparatus for manufacturing carbon nanotubes and a method of manufacturing carbon nanotubes with the apparatus. A plurality of carbon-nanotube-synthesizing units are disposed in series to continuously perform a carbon-nanotube-synthesizing process. Thus, carbon nanotubes having a uniform quality can be synthesized.

Abstract: Provided are an apparatus for synthesizing carbon nanotubes, the apparatus including a reaction tube that provides a space for carbon nanotubes and is formed vertically long, a heating unit that is formed at the outer side of the reaction tube, and heats the reaction tube, a gas-supply unit that sprays reaction gas for synthesizing the carbon nanotubes by reacting with catalysts positioned inside the reaction tube, an exhaustion unit that is connected to the upper portion of the reaction tube, and discharges non-reacted reaction gas for synthesizing the carbon nanotubes, and a blocking unit that is formed inside the reaction tube, discharges only the non-reacted reaction gas for synthesizing the carbon nanotubes to the exhaustion unit, and blocks the discharge of the carbon nanotubes and catalysts, in which the cross-section of the blocking unit is divided in a plurality of polygon structures, and downward-slanted blocking wings are formed at each divided cell.

Abstract: Apparatus and method for compounding carbon nanotubes are provided to uniformly supply a source gas used to compound carbon nanotubes, efficiently exhaust the source gas, and increase a retrieve rate of the carbon nanotubes. According to the apparatus and method, carbon nanotubes are massively compounded.

Abstract: Provided is an apparatus for synthesizing carbon nanotubes (CNTs). The apparatus includes: a vertical reaction chamber; a mixer which is disposed within the vertical reaction chamber and mixes a catalyst supplied from above; and a plurality of dispersion plates which vertically partition a space inside the vertical reaction chamber into a plurality of sections and uniformly disperse a source gas, which is supplied from above, into the sections.

Abstract: This invention relates to a carbon nanotube producing system. A carbon nanotube producing system includes a reaction tube in which a metal catalyst and a carbon-containing gas are supplied and carbon nanotube grows on the metal catalyst by pyrolysis; an exhaust line along which a gas including the carbon nanotube grown on the metal catalyst is exhausted from the reaction tube; and a carbon nanotube trapping apparatus installed on the exhaust line and configured to trap the carbon nanotube grown on the metal catalyst by using a magnetic force.

Abstract: In an apparatus and method of generating a carbon nanotube (CNT), a process chamber is heated to a target temperature and a catalyst powder is supplied into the heated process chamber. The catalyst powder moves in a first direction in the process chamber. A source gas is supplied into the process chamber in a second direction opposite to the first direction, so that the source gas delays the movement of the catalyst powder in the first direction and is reacted with the catalyst powder in the process chamber to thereby produce the CNT in the process chamber. Accordingly, the flow of the source gas against the flow of the catalyst powder reduces the drop velocity of the catalyst powder. Therefore, the source gas and the catalyst powder may be reacted with each other for a sufficiently long time.