Abstract: A three-dimensional object printer includes a head having a plurality of nozzles that discharge a liquid, a movement mechanism having an arm section that supports the head and having a plurality of joint sections provided on the arm section, a drive circuit that generates a drive signal to drive the head, a control circuit that generates a control signal to control supply of the drive signal to the head, a first cable for transmitting the drive signal from the drive circuit to the head, and a second cable for transmitting the control signal from the control circuit to the head. At least a part of the second cable is arranged along the arm section. The control signal is transmitted as a differential signal to the second cable.

Abstract: A liquid ejecting method is a liquid ejecting method of ejecting a liquid from a liquid ejecting head including a nozzle array constituted by arranging nozzles, in which the liquid ejecting head is configured to move relative to a first medium, the liquid ejecting method including ejecting, in a state in which the relative movement is stopped, a liquid from first nozzles constituting a part of the nozzle array to form a first liquid droplet on the first medium.

Abstract: A liquid ejecting method is a liquid ejecting method of ejecting a plurality of types of liquids from a liquid ejecting head including nozzle arrays, the liquid ejecting method including ejecting a first-liquid from a first-nozzle-array of the liquid ejecting head; and ejecting a second-liquid that is different in type from the first-liquid from a second-nozzle-array of the liquid ejecting head, in which the liquid ejecting head is configured to move relative to one or a plurality of media, and in a state in which the relative movement is stopped, the liquid ejecting head forms a first-liquid-droplet formed by the first-liquid ejected from the first-nozzle-array and a second-liquid-droplet formed by the second-liquid-ejected from the second-nozzle-array on one medium among the one or plurality of media in the same period such that the first-liquid-droplet and the second-liquid-droplet do not overlap each other.

Abstract: A deterioration estimator for an electronic throttle device allows a throttle valve to be driven by a drive mechanism. The throttle valve is continuously operated to open and/or close. If operated to open, it opens from a first opening position, which is on a closed side from an opener opening position and in which the throttle valve is biased to an open side by an opener mechanism, to a second opening position, the second opening position being on an open side from the opener opening position with the throttle valve being biased to the closed side by the opener mechanism. If operated to close, the throttle valve is operated to close from the second opening position to the first opening position. A deteriorated condition of the electronic throttle device is estimated by detecting a behavior of the drive mechanism when the throttle valve passes by the opener opening position.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head having a first-nozzle-row, a first-tank storing a first-liquid, a first-supply-flow-path for supplying the first-liquid to the first-nozzle-row from the first-tank, a first on-off valve provided in an intermediate portion of the first-supply-flow-path and configured to open and close the first-supply-flow-path, and a first-pressurizing-mechanism configured to pressurize an inside of the first-tank. A pressure inside the first-tank is set to a predetermined positive pressure by driving the first-pressurizing-mechanism in a closed state of the first on-off valve. Thereafter, a discharge process of discharging the first-liquid from the first-nozzle-row is performed by bringing the first on-off valve into an open state. In the discharge process, the first on-off valve is switched from the open state to the closed state at a timing at which the first-liquid is being continuously discharged from the first-nozzle-row.

Abstract: A three-dimensionally shaped article production member is a member used in a three-dimensionally shaped article production apparatus for producing a three-dimensionally shaped article by stacking a layer formed using a composition containing particles. The member is placed on a stage and comes in contact with the layer, and has a portion provided with pores in a contact surface with the layer.

Abstract: A deterioration estimator for an electronic throttle device allows a throttle valve to be driven by a drive mechanism. The throttle valve is continuously operated to open and/or close. If operated to open, it opens from a first opening position, which is on a closed side from an opener opening position and in which the throttle valve is biased to an open side by an opener mechanism, to a second opening position, the second opening position being on an open side from the opener opening position with the throttle valve being biased to the closed side by the opener mechanism. If operated to close, the throttle valve is operated to close from the second opening position to the first opening position. A deteriorated condition of the electronic throttle device is estimated by detecting a behavior of the drive mechanism when the throttle valve passes by the opener opening position.

Abstract: A three-dimensional object printer includes a head having a plurality of nozzles that discharge a liquid, a movement mechanism having an arm section that supports the head and having a plurality of joint sections provided on the arm section, a drive circuit that generates a drive signal to drive the head, a control circuit that generates a control signal to control supply of the drive signal to the head, a first cable for transmitting the drive signal from the drive circuit to the head, and a second cable for transmitting the control signal from the control circuit to the head. At least a part of the second cable is arranged along the arm section. The control signal is transmitted as a differential signal to the second cable.

Abstract: A supply device that supplies a liquid to a liquid ejecting head, includes one or more tanks that house the liquid; a liquid flow path coupled to the one or more tanks and the liquid ejecting head; and a pressure-adjusting portion that adjusts a pressure in the one or more tanks. The one or more tanks are provided between the pressure-adjusting portion and the liquid flow path. The pressure-adjusting portion includes a communication path that communicates with the one or more tanks, a pressure chamber provided with a diaphragm and coupled to the communication path, and an urging portion that urges the diaphragm in a direction in which the pressure chamber expands.

Abstract: A three-dimensional object printing apparatus includes a head unit and a robot. The head unit includes a head and an energy emission unit. The head has an ejecting surface on which a nozzle is provided. The head is configured to eject ink from the nozzle toward a three-dimensional workpiece. The energy emission unit has an emitting surface from which energy for curing the ink is emitted. The robot changes relative position and relative orientation of the workpiece and the head unit. When a direction in which the head ejects the ink is defined as an ejecting direction, the ejecting surface is located closer to an ejecting direction side, which is a side toward which the ejecting direction goes, than the emitting surface is.

Abstract: A three-dimensionally shaped article production member is a member used in a three-dimensionally shaped article production apparatus for producing a three-dimensionally shaped article by stacking a layer formed using a composition containing particles. The member is placed on a stage and comes in contact with the layer, and has a portion provided with pores in a contact surface with the layer.

Abstract: Provided is a three-dimensional shaped article with relatively high strength and relatively high accuracy. A sintering and shaping method includes: a shaping layer forming process of forming a shaping layer by using a sintering and shaping material in which inorganic particles are included; a process of applying a liquid binding agent, in which a thermoplastic resin and inorganic particles are included, to a desired region of the shaping layer; a process of curing the liquid binding agent, which is applied, to form a shaping cross-sectional layer (shaping portion); a process of removing a region (non-shaping portion) of the shaping layer to which the liquid binding agent is not applied; and a process of heating the shaping cross-sectional layer that is laminated for a sintering treatment.

Abstract: A supply device that supplies a liquid to a liquid ejecting head, includes one or more tanks that house the liquid; a liquid flow path coupled to the one or more tanks and the liquid ejecting head; and a pressure-adjusting portion that adjusts a pressure in the one or more tanks. The one or more tanks are provided between the pressure-adjusting portion and the liquid flow path. The pressure-adjusting portion includes a communication path that communicates with the one or more tanks, a pressure chamber provided with a diaphragm and coupled to the communication path, and an urging portion that urges the diaphragm in a direction in which the pressure chamber expands.

Abstract: A three-dimensional modeling composition set includes a model material and a support material. The model material contains a heterocyclic acrylate having oxygen as a heteroatom in the molecule and a first photopolymerization initiator. The support material contains a water-soluble polymerizable compound and a second photopolymerization initiator. The heterocyclic acrylate may be an acrylate having one of a dioxane ring structure and a dioxolane ring structure.

Abstract: Provided is a three-dimensional shaped article with relatively high strength and relatively high accuracy. A sintering and shaping method includes: a shaping layer forming process of forming a shaping layer by using a sintering and shaping material in which inorganic particles are included; a process of applying a liquid binding agent, in which a thermoplastic resin and inorganic particles are included, to a desired region of the shaping layer; a process of curing the liquid binding agent, which is applied, to form a shaping cross-sectional layer (shaping portion); a process of removing a region (non-shaping portion) of the shaping layer to which the liquid binding agent is not applied; and a process of heating the shaping cross-sectional layer that is laminated for a sintering treatment.

Abstract: Provided is a three-dimensional shaped article with relatively high strength and relatively high accuracy. A sintering and shaping method includes: a shaping layer forming process of forming a shaping layer (5) by using a sintering and shaping material in which inorganic particles (2a) are included; a process of applying a liquid binding agent (8), in which inorganic particles (8a) are included, to a desired region of the shaping layer (5); a process of curing the liquid binding agent (8), which is applied, to form a shaping cross-sectional layer (shaping portion (5a)); a process of removing a region (non-shaping portion (5b)) of the shaping layer (5) to which the liquid binding agent (8) is not applied; and a process of heating the shaping cross-sectional layer that is laminated for a sintering treatment.

Abstract: A molding apparatus includes a heating section, a spreading section, a molding section, a drawing section and a curing section. The heating section which heats a mold material including particles and a binder agent which bonds together the particles, to a temperature equal to or higher than the melting point of the binder agent and forms a fluid mold material. The spreading section forms a mold layer by spreading the fluid mold material. The molding section layers the mold layers. The drawing section applies UV ink to a desired region of the mold layer. The curing section cures the UV ink applied to the desired region of the mold layer.

Abstract: The invention provides metal powder constituted from metal particles. Each of the metal particles comprises a base particle having a surface and a metal material constituting at least the surface of the base particle. The base particle is subjected to a surface treatment with a fluorine type phosphoric acid ester. Further, the invention also provides an ultraviolet ray curable ink jet composition to be ejected by using an ink jet method. The ultraviolet ray curable ink jet composition comprises a polymerizable compound and metal powder constituted from metal particles. The metal particles of the metal powder are subjected to a surface treatment with a fluorine type phosphoric acid ester.

Abstract: A three-dimensional shaping composition of this invention is a three-dimensional shaping composition which is used for producing a three-dimensionally shaped article by laminating layers and contains particles having a hydrophilic surface and water-soluble monomers having a hydroxyl group. The water-soluble monomer is preferably at least one selected from the group consisting of 4-hydroxybutyl acrylate, 2-hydroxybutyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, and phenol epoxy acrylate.

Abstract: An ultraviolet ray curable ink composition adapted to be ejected by using an ink jet method is provided. The ultraviolet ray curable ink composition includes a polymerizable compound and metal powder. The metal powder is constituted from metal particles subjected to a surface treatment with a fluorine type silane compound and/or a fluorine type phosphoric acid ester as a surface treatment agent. A polymerizable compound includes a monomer having an alicyclic structure. This makes it possible to provide the ultraviolet ray curable ink composition which has excellent storage stability, can provide excellent dispersion stability of the metal particles of the metal powder. A printed object is also provided. Such a printed object is produced by using the ultraviolet ray curable ink composition.