Abstract: There is provided an ink jet ink composition, which is used in a recording method including ejecting the ink jet ink composition from a recording head of head temperature C (unit: ° C.) onto a recording medium to adhere the ink jet ink composition thereonto and drying the recording medium, on which the ink jet ink composition is adhered, at drying temperature D (unit: ° C.), including water; and a polymer particle, in which the polymer particle has a core polymer containing a polymer of glass transition temperature A (unit: ° C.) and a shell polymer containing a polymer of glass transition temperature B (unit: ° C.) and formed on the surface of the core polymer, and in which the A, B, C, and D satisfy predetermined relations.

Abstract: An ink jet printer includes a transport mechanism that transports a medium in a first direction; and a carriage that includes a plasma irradiation mechanism, which emits plasma generated in a discharge portion from a plasma irradiation port and then irradiates at least a part of the medium with the plasma, and a head which ejects ink onto the part of the medium which is irradiated with the plasma, and that moves in a second direction intersecting with the first direction, in which the plasma irradiation mechanism is provided on one side of the head in the second direction, and the discharge portion of the plasma irradiation mechanism is disposed so as not to come in contact with the medium.

Abstract: A method of manufacturing a dispersion liquid includes preparing a mixed liquid which contains a first solvent, a second solvent having solubility which is equal to or less than 1% with respect to the first solvent, and a compound having a polymerizable functional group; and microcapsulating and dispersing the first solvent or the second solvent by performing liquid plasma treatment on the mixed liquid while applying ultrasonic waves to the mixed liquid by using an ultrasonic wave generating apparatus.

Abstract: A method of producing a dispersion according to the invention includes preparing a mixed liquid containing a dispersoid and a dispersion medium, and dispersing the dispersoid in the dispersion medium by subjecting the dispersoid in the mixed liquid to an in-liquid plasma processing while subjecting the dispersoid to a pulverization processing.

Abstract: The ink jet recording method includes discharging liquid droplets of a photocurable ink composition including a solvent, a polymerizable compound, and a photopolymerization initiator from a head to a recording medium to land the liquid droplets, thereby forming an image; evaporating the solvent included in the photocurable ink composition constituting the image; and irradiating the image after the second step with light, wherein when the irradiation is initiated in the third step, the content of the polymerizable compound included in the photocurable ink composition constituting the image after the second step is from 20 to 90% by mass, based on the total mass of the ink composition.

Abstract: An ink jet recording method including recording an image on the recording medium by causing a first recording head that ejects the first ink composition and a second recording head that ejects the second ink composition to eject the first ink composition and the second ink composition while relative positions thereof with respect to the recording medium are changed, in which, in the recording of the image, a time after the first ink composition is ejected to a predetermined area of the recording medium and before the second ink composition is ejected to the predetermined area is in the range of 10 ms to 2,000 ms, a viscosity of the ink composition at 20° C. when the first ink composition is ejected is 15 mPa·s or less, and the viscosity at 20° C. when 50% of a volatile component contained in the first ink composition is volatilized is 100 mPa·s or greater.

Abstract: An ink jet printer includes a transportation mechanism that transports a medium in a first direction; a plasma irradiation mechanism that irradiates the medium with plasma; a head mechanism that ejects ink to a portion of the medium irradiated with the plasma and moves in a second direction intersecting the first direction; and a control section that controls whether to irradiate the medium with the plasma by the plasma irradiation mechanism, wherein the control section prohibits the irradiation of the medium with the plasma when a transportation speed of the medium is in a range of 0 m/min to 0.1 m/min, and irradiates the medium with the plasma when the transportation speed of the medium is greater than 0.1 m/min.

Abstract: An ink jet printer including a transportation mechanism transporting a medium in a first direction; and a carriage having a plasma irradiation mechanism that irradiates a portion of the medium with plasma generated in an electricity discharge portion and emitted from a plasma irradiation opening and a head that ejects ink from a nozzle to the plasma irradiated portion of the medium, and that moves in a second direction intersecting the first direction. The plasma irradiation mechanism is on one side of the head in the second direction, a partition board is between the plasma irradiation opening and the head, and if a distance from the medium's surface to the nozzle is (A), a distance from the medium's surface to the plasma irradiation opening is (B), and a distance from the medium's surface to the bottom edge of the partition board is (C), then (C)<(A)?(B).

Abstract: An ink jet recording method including recording an image on the recording medium by causing a first recording head that ejects the first ink composition and a second recording head that ejects the second ink composition to eject the first ink composition and the second ink composition while relative positions thereof with respect to the recording medium are changed, in which, in the recording of the image, a time after the first ink composition is ejected to a predetermined area of the recording medium and before the second ink composition is ejected to the predetermined area is in the range of 10 ms to 2,000 ms, a viscosity of the ink composition at 20° C. when the first ink composition is ejected is 15 mPa·s or less, and the viscosity at 20° C. when 50% of a volatile component contained in the first ink composition is volatilized is 100 mPa·s or greater.

Abstract: The ink jet recording method includes discharging liquid droplets of a photocurable ink composition including a solvent, a polymerizable compound, and a photopolymerization initiator from a head to a recording medium to land the liquid droplets, thereby forming an image; evaporating the solvent included in the photocurable ink composition constituting the image; and irradiating the image after the second step with light, wherein when the irradiation is initiated in the third step, the content of the polymerizable compound included in the photocurable ink composition constituting the image after the second step is from 20 to 90% by mass, based on the total mass of the ink composition.

Abstract: An ink jet printer including a transportation mechanism that transports a medium in a first direction; and a carriage that has a plasma irradiation mechanism configured to irradiate at least a portion of the medium with plasma generated in an electricity discharge portion and emitted from a plasma irradiation opening and a head configured to eject ink from a nozzle to the portion of the medium irradiated with the plasma, and that moves in a second direction intersecting the first direction, in which the plasma irradiation mechanism is provided on one side of the head in the second direction, a partition board is provided between the plasma irradiation opening and the head, and if a distance from a surface of the medium to the nozzle is (A), a distance from a surface of the medium to the plasma irradiation opening is (B), and a distance from a surface of the medium to the bottom edge of the partition board is (C), a conditional expression: (C)<(A)?(B) is satisfied.

Abstract: There is provided an ink jet ink composition, which is used in a recording method including ejecting the ink jet ink composition from a recording head of head temperature C (unit: ° C.) onto a recording medium to adhere the ink jet ink composition thereonto and drying the recording medium, on which the ink jet ink composition is adhered, at drying temperature D (unit: ° C.), including water; and a polymer particle, in which the polymer particle has a core polymer containing a polymer of glass transition temperature A (unit: ° C.) and a shell polymer containing a polymer of glass transition temperature B (unit: ° C.) and formed on the surface of the core polymer, and in which the A, B, C, and D satisfy predetermined relations.

Abstract: A method for producing an object includes forming and laying N unit layers into which an object is divided, sequentially from a first layer to an Nth layer, using a resin material as a material, or using a resin material for implementing a step, to form the object, the method including performing a discharge treatment at either or both of a timing while forming a unit layer among the N unit layers, and a timing after forming the unit layer, but before starting forming a next unit layer among the N unit layers.

Abstract: An ink jet printer includes a transportation mechanism that transports a medium in a first direction; a plasma irradiation mechanism that irradiates the medium with plasma; a head mechanism that ejects ink to a portion of the medium irradiated with the plasma and moves in a second direction intersecting the first direction; and a control section that controls whether to irradiate the medium with the plasma by the plasma irradiation mechanism, wherein the control section prohibits the irradiation of the medium with the plasma when a transportation speed of the medium is in a range of 0 m/min to 0.1 m/min, and irradiates the medium with the plasma when the transportation speed of the medium is greater than 0.1 m/min.

Abstract: An ink jet printer includes a transport mechanism that transports a medium in a first direction; and a carriage that includes a plasma irradiation mechanism, which emits plasma generated in a discharge portion from a plasma irradiation port and then irradiates at least a part of the medium with the plasma, and a head which ejects ink onto the part of the medium which is irradiated with the plasma, and that moves in a second direction intersecting with the first direction, in which the plasma irradiation mechanism is provided on one side of the head in the second direction, and the discharge portion of the plasma irradiation mechanism is disposed so as not to come in contact with the medium.

Abstract: An ink jet recording apparatus includes a liquid-ejecting head including a pressure-generating chamber filled with a photocurable ink composition containing a polymerizable functional group-containing compound and water, a nozzle communicating with the pressure-generating chamber and ejecting a droplet of the photocurable ink composition, and a pressure-generating member causing a pressure change in the pressure-generating chamber; and an ejection pulse-generating unit generating an ejection pulse for driving the pressure-generating member.

Abstract: A power transmission device is embedded in an electric vehicle equipped with an electric motor and a transmission. The transmission includes a first reduction mechanism and a second reduction mechanism. The power transmission device also includes a spline hub coupled to an output side of the first reduction mechanism, a clutch plate coupled to an input side of the second reduction mechanism, and a coupling portion. The coupling portion is disposed between the spline hub and the clutch plate, and includes a damper mechanism configured to absorb a vibration from the spline hub and transmit a torque to the clutch plate, and a torque limiter configured to transmit the torque and to limit transmission of the torque when the torque is greater than or equal to a predetermined magnitude.

Abstract: An ink jet recording apparatus includes a liquid-ejecting head including a pressure-generating chamber filled with a photocurable ink composition containing a polymerizable functional group-containing compound and water, a nozzle communicating with the pressure-generating chamber and ejecting a droplet of the photocurable ink composition, and a pressure-generating member causing a pressure change in the pressure-generating chamber; and an ejection pulse-generating unit generating an ejection pulse for driving the pressure-generating member.

Abstract: The ink jet recording method includes discharging liquid droplets of a photocurable ink composition including a solvent, a polymerizable compound, and a photopolymerization initiator from a head to a recording medium to land the liquid droplets, thereby forming an image; evaporating the solvent included in the photocurable ink composition constituting the image; and irradiating the image after the second step with light, wherein when the irradiation is initiated in the third step, the content of the polymerizable compound included in the photocurable ink composition constituting the image after the second step is from 20 to 90% by mass, based on the total mass of the ink composition.

Abstract: An ink composition for ink jet providing excellent in the curability based on ultraviolet irradiation in the presence of water or a solvent, the ejection stability with respect to the factors such as dot loss or flight deflection, and the storage stability of ink. Also provided herein is an ink composition for ink jet including: a pigment; a water-soluble organic solvent; a surfactant; at least either of a urethane (meth)acrylate being represented by the following general formula (1) and having a weight average molecular weight of 1,000 to 10,000 and a cross-linked urethane (meth)acrylate having a constitutional unit including the urethane (meth)acrylate; a compound having a radical polymerizable group(s); a photoradical polymerization initiator; and water: A1-O—(CONH—B1—NHCOO—C1—O)n—CONH—B1—NH—COO-D1??(1) where each of A1, B1, C1, D1, and n in formula (1) are described herein.