Abstract: An organic electroluminescence device includes an emitting region between a cathode and an anode, a first anode side organic layer, and a second anode side organic layer. The emitting region includes at least a first emitting layer, the first anode side organic layer is in direct contact with the second anode side organic layer, the first anode side organic layer contains first and second organic materials, a content of the first organic material in the first anode side organic layer is less than 50 mass %, the second anode side organic layer contains a second hole transporting zone material, the first emitting layer is an emitting layer that emits fluorescence, and a refractive index NM1 of the constituent materials contained in the first anode side organic layer and a refractive index NM2 of the constituent material contained in the second anode side organic layer satisfy a relationship of NM1>NM2.

Abstract: An ink jet composition according to the present disclosure contains a flameproofing agent and resin particles. The resin particles are preferably urethanic resin particles. It is preferable that a urethanic resin making up the urethanic resin particles is a urethanic resin containing a crosslinking group and the crosslinking group is one or more selected from the group consisting of a blocked isocyanate group and a silanol group. The urethanic resin making up the urethanic resin particles preferably has a polycarbonate skeleton.

Abstract: An optical frequency comb device includes: an optical waveguide; a first mirror disposed at a first position in the optical waveguide; a second mirror disposed at a second position different from the first position, in the optical waveguide; a gain medium and a saturable absorber which are disposed between the first mirror and the second mirror; and a controller that fixes one of a repetition frequency and a carrier-envelope offset frequency of an optical frequency comb output from an end of the optical waveguide, and changes the other of the repetition frequency and the carrier-envelope offset frequency.

Abstract: A dual optical frequency comb generator incudes a semiconductor substrate, a first optical frequency comb laser light source including a first resonator, a second optical frequency comb laser light source including a second resonator and differing in repetition frequency of optical pulses from the first optical frequency comb laser light source, two or more outputters including first and second outputters, a first optical waveguide connecting the first optical frequency comb laser light source with the first outputter, a second optical waveguide connecting the second optical frequency comb laser light source with the second outputter, and a third optical waveguide that branches off from the first optical waveguide and joins the second optical waveguide. The first optical frequency comb laser light source, the second optical frequency comb laser light source, the two or more outputters, and the optical waveguides are integrated on the semiconductor substrate.

Abstract: An ink jet printing recording apparatus includes a belt which supports a recording medium; a heating portion which heats the belt; and an ink jet recording head which ejects an ink jet ink composition, the belt is provided with an adhesive layer, the ink jet ink composition contains a heat cross-linking component, and the belt is heated by the heating portion to a temperature lower than a reaction temperature of the heat cross-linking component.

Abstract: A textile printing ink jet ink composition includes a dioxazine pigment, a resin particle, and a lubricant, wherein the content of the dioxazine pigment is 0.5 to 1.5 mass % based on the total amount of the ink composition.

Abstract: An ink receptacle includes an inner bag filled with an aqueous ink jet ink and a pliable sheath containing the inner bag. The inner bag contains a gas phase in a volume fraction of 0.001 or more relative to the capacity of the inner bag. The aqueous ink jet ink contains a dispersed component, an acetylene glycol surfactant having an HLB of 11 or more, and an acetylene glycol surfactant having an HLB of 9 or less.

Abstract: A dual optical frequency comb light-emitting device includes a first optical-frequency-comb laser source that includes a first laser resonator having a first optical path length, a second optical-frequency-comb laser source that includes a second laser resonator having a second optical path length different from the first optical path length, and an optical coupler that causes a first portion of first optical-frequency-comb laser light emitted from the first laser resonator to enter the second laser resonator. The first optical-frequency-comb laser source outputs a second portion of the first optical-frequency-comb laser light to an outside. The second optical-frequency-comb laser source outputs second optical-frequency-comb laser light emitted from the second laser resonator to the outside.

Abstract: An ink jet printing recording apparatus includes a belt which supports a recording medium; a heating portion which heats the belt; and an ink jet recording head which ejects an ink jet ink composition, the belt is provided with an adhesive layer, the ink jet ink composition contains a heat cross-linking component, and the belt is heated by the heating portion to a temperature lower than a reaction temperature of the heat cross-linking component.

Abstract: An ink jet printing apparatus includes a printing head that has a nozzle face and a nozzle having an ejection opening defined in the nozzle face and through which an ink composition is ejected, and a pressure cleaning mechanism configured to apply a pressure to an interior of the printing head to discharge the ink composition from the nozzle for cleaning. The ink composition contains resin particles having a glass transition temperature of ?30° C. to 50° C., an organic solvent having a normal boiling point of 280° C. or more, at least one of organic and inorganic alkalis, and at least one of betaines and polyhydric alcohols being solid at room temperature.

Abstract: An optical measuring device includes a light source, a photodetector, a control circuit, and a signal processing circuit. The control circuit causes the light source to emit first and second light pulses with which a target of measurement is irradiated, causes the photodetector to detect a first portion of a first reflected light pulse in a first period having a first time length and output a first signal representing an amount of light of the first portion, and causes the photodetector to detect a second portion of a second reflected light pulse in a second period having a second time length and output a second signal representing an amount of light of the second portion. The signal processing circuit generates, based on a fluctuation in the first signal and a fluctuation in the second signal, information indicating a fluctuation in internal state of the target of measurement.

Abstract: An ink receptacle includes an inner bag filled with an aqueous ink jet ink and a pliable sheath containing the inner bag. The inner bag contains a gas phase in a volume fraction of 0.001 or more relative to the capacity of the inner bag. The aqueous ink jet ink contains a dispersed component, an acetylene glycol surfactant having an HLB of 11 or more, and an acetylene glycol surfactant having an HLB of 9 or less.

Abstract: A textile printing ink jet ink composition includes a dioxazine pigment, a resin particle, and a lubricant, wherein the content of the dioxazine pigment is 0.5 to 1.5 mass % based on the total amount of the ink composition.

Abstract: An ink jet composition according to the present disclosure contains a flameproofing agent and resin particles. The resin particles are preferably urethanic resin particles. It is preferable that a urethanic resin making up the urethanic resin particles is a urethanic resin containing a crosslinking group and the crosslinking group is one or more selected from the group consisting of a blocked isocyanate group and a silanol group. The urethanic resin making up the urethanic resin particles preferably has a polycarbonate skeleton.