Abstract: An ESD protection device includes an insulating ceramic body including a cavity portion, an auxiliary electrode including a first and second main surfaces, the auxiliary electrode being embedded in the insulating ceramic body such that a side end portion of the auxiliary electrode between the first and second main surfaces is exposed to the cavity portion, and first and second discharge electrodes embedded in the insulating ceramic body such that main surfaces of the first and second discharge electrodes face each other with the auxiliary electrode interposed therebetween, the auxiliary electrode including first and second auxiliary electrode layers, the first auxiliary electrode layer having a higher content of a conductive material than the second auxiliary electrode layer, the first auxiliary electrode layer being joined to at least one of the first and second discharge electrodes.

Abstract: An ESD protection device includes a base body, first and second discharge electrodes provided in the base body and facing each other in a lamination direction, and a discharge auxiliary electrode that is provided between the first and second discharge electrodes and electrically couples the first and second discharge electrodes. The base body includes a cavity provided around at least a portion of an outer surface of the discharge auxiliary electrode and the cavity exposes the first discharge electrode, the second discharge electrode, and a region that is included in the outer surface of the discharge auxiliary electrode and is present between the first discharge electrode and the second discharge electrode.

Abstract: An ESD protection device includes a ceramic element assembly including a glass component, first and second discharge electrodes on the same plane in the ceramic element assembly and opposed to each other with a gap therebetween, a discharge auxiliary electrode that connects the first discharge electrode to the second discharge electrode on the same plane, and a seal layer that is disposed between the discharge auxiliary electrode and the ceramic element assembly and that reduces or prevents a glass component in the ceramic element assembly from entering the discharge auxiliary electrode. The seal layer includes a conductive component.

Abstract: An ESD protection device includes first and second discharge electrodes and a discharge auxiliary electrode that is electrically connected to the first and second discharge electrodes. The first and second discharge electrodes are located on or in an insulating substrate to at least partially face each other. The discharge auxiliary electrode includes first metal particles, second metal particles, and a binding agent. The first metal particles have a core-shell structure including a core section mainly including a first metal and a shell section which mainly includes an oxide of a second metal and which includes at least one portion with a cavity. The second metal particles have a core-shell structure including a core section mainly including the first metal and a shell section which mainly includes the oxide of the second metal and which has no cavity.

Abstract: An ESD protection device includes a ceramic element assembly including a glass component, first and second discharge electrodes on the same plane in the ceramic element assembly and opposed to each other with a gap therebetween, a discharge auxiliary electrode that connects the first discharge electrode to the second discharge electrode on the same plane, and a seal layer that is disposed between the discharge auxiliary electrode and the ceramic element assembly and that reduces or prevents a glass component in the ceramic element assembly from entering the discharge auxiliary electrode. The seal layer includes a conductive component.

Abstract: An ESD protection device includes a base body, first and second discharge electrodes provided in the base body and facing each other in a lamination direction, and a discharge auxiliary electrode that is provided between the first and second discharge electrodes and electrically couples the first and second discharge electrodes. The base body includes a cavity provided around at least a portion of an outer surface of the discharge auxiliary electrode and the cavity exposes the first discharge electrode, the second discharge electrode, and a region that is included in the outer surface of the discharge auxiliary electrode and is present between the first discharge electrode and the second discharge electrode.

Abstract: An ESD protection device includes an insulating ceramic body including a cavity, first and second discharge electrodes disposed so as to partially face each other with the cavity interposed therebetween, and a supporting electrode disposed so as to be at least partially exposed to the cavity and to be electrically connected to the first and second discharge electrodes. A void isolated from the cavity is provided in at least a portion of a boundary region between at least one of the first and second discharge electrodes, the supporting electrode, and the insulating ceramic body.

Abstract: An ESD protection device includes an insulating ceramic body including a cavity portion, an auxiliary electrode including a first and second main surfaces, the auxiliary electrode being embedded in the insulating ceramic body such that a side end portion of the auxiliary electrode between the first and second main surfaces is exposed to the cavity portion, and first and second discharge electrodes embedded in the insulating ceramic body such that main surfaces of the first and second discharge electrodes face each other with the auxiliary electrode interposed therebetween, the auxiliary electrode including first and second auxiliary electrode layers, the first auxiliary electrode layer having a higher content of a conductive material than the second auxiliary electrode layer, the first auxiliary electrode layer being joined to at least one of the first and second discharge electrodes.

Abstract: An ESD protection device includes a multilayer substrate, first and second discharge electrodes, and a discharge auxiliary electrode. Discharge portions of the first and second discharge electrodes are opposed to each other in a lamination direction of insulating layers with the discharge auxiliary electrode interposed between both the discharge portions. A cavity is provided within the multilayer substrate in at least one of a region positioned adjacent to or in a vicinity of the discharge portion of the first discharge electrode on an opposite side to the discharge auxiliary electrode and a region positioned adjacent to or in a vicinity of the discharge portion of the second discharge electrode on an opposite side to the discharge auxiliary electrode.

Abstract: The production method for producing a rifled tube, which includes a plurality of first helical ribs on its inner surface, includes: a steps of: preparing a steel tube; and producing a rifled tube by performing cold drawing on a steel tube by using a plug which includes a plurality of second helical ribs, the plug satisfying Formulae and: 0.08 <W×(A?B)×N/(2?×A)<0.26??(1) 0.83<S×(A?B)×N/(2×M)<2.0??(2) where, W is a width of a groove bottom surface of the helical groove; A is a maximum diameter of the plug; B is a minimum diameter of the plug; N is a number of the second helical ribs; S is the width of the groove bottom surface; and M is a pitch of adjacent second helical ribs.

Abstract: The present technology relates to an optical recording medium for realizing an optical recording medium capable of high-capacity recording. A groove and a land are formed, the groove being concave and the land being convex when seen from a side of a laser light incident surface, both of the groove and the land being recording tracks where recording or reproduction of information is performed. According to this recording layer, a pitch between the groove and the land that are adjacent recording tracks is within a range of 250 nm to 200 nm. Moreover, recording or reproduction of information is performed with respect to the recording tracks by irradiation of laser light whose wavelength is 400 nm to 415 nm by an optical system whose NA is 0.85±0.1.

Abstract: The present technology relates to an optical recording medium for realizing an optical recording medium capable of high-capacity recording. A groove and a land are formed, the groove being concave and the land being convex when seen from a side of a laser light incident surface, both of the groove and the land being recording tracks where recording or reproduction of information is performed. According to this recording layer, a pitch between the groove and the land that are adjacent recording tracks is within a range of 250 nm to 200 nm. Moreover, recording or reproduction of information is performed with respect to the recording tracks by irradiation of laser light whose wavelength is 400 nm to 415 nm by an optical system whose NA is 0.85±0.1.

Abstract: A method for producing a steel tube of high strength and toughness for air bag subjects a steel tube to high-frequency induction heating such that the outer surface temperature T1 (° C.) of the tube measured at the end of high-frequency induction heating is within the range defined by TAc3+40° C.?T1?1100° C., TAc3 is the temperature (° C.) of Ac3 transformation point. Using the measured outer surface temperature of the tube, time x (second) elapsed from when the outer surface temperature of steel tube reaches the temperature of Ac3 transformation point by high-frequency induction heating is calculated. Based on the calculated time x, time t (second) required from measurement of the outer surface temperature of steel tube to the start of rapid cooling is controlled so that the time t is within the range defined by 0 (sec)<t?10 (sec)?x.

Abstract: An optical information recording medium includes: a substrate; two or more information signal layers provided on the substrate; and a cover layer provided on the information signal layers. At least one of the two or more information signal layers is provided with an inorganic recording layer including Pd oxide, a first protective layer provided on a first main surface of the inorganic recording layer, and a second protective layer provided on a second main surface of the inorganic recording layer. And at least one of the first protective layer and the second protective layer includes a compound oxide of Si oxide, In oxide and Zr oxide as a main component.

Abstract: An optical recording medium including a substrate and two or more recording layers that contain Pd, O, and M (M comprises at least one of Zn, Al, In, and Sn), where O is contained in an amount greater than a stoichiometric composition thereof when M is completely oxidized (into ZnO, Al2O3, In2O3, and SnO2). An nth recording layer of the two or more recording layers, as counted from an opposite side of an incident side of recording light, has a Pd content that is less than that of an (n?1)th recording layer.

Abstract: The present technology relates to an optical recording medium for realizing an optical recording medium capable of high-capacity recording. A groove and a land are formed, the groove being concave and the land being convex when seen from a side of a laser light incident surface, both of the groove and the land being recording tracks where recording or reproduction of information is performed. According to this recording layer, a pitch between the groove and the land that are adjacent recording tracks is within a range of 250 nm to 200 nm. Moreover, recording or reproduction of information is performed with respect to the recording tracks by irradiation of laser light whose wavelength is 400 nm to 415 nm by an optical system whose NA is 0.85±0.1.

Abstract: An optical information recording medium includes: a substrate; two or more information signal layers provided on the substrate; and a cover layer provided on the information signal layers. At least one of the two or more information signal layers is provided with an inorganic recording layer including Pd oxide, a first protective layer provided on a first main surface of the inorganic recording layer, and a second protective layer provided on a second main surface of the inorganic recording layer. And at least one of the first protective layer and the second protective layer includes a compound oxide of Si oxide, In oxide and Zr oxide as a main component.

Abstract: [Object] To provide an optical recording medium that can be applied to a write-once optical recording medium having a high capacity of about 25 GB per one layer, and has good recording properties when a multilayered recording layer configuration is provided. [Solving Means] It includes a substrate 21 and two to four recording layers 221 and 222. At least one or more of these recording layers 221 and 222 are specific recording layers with a composition containing PdO and PdO2 as well as at least one of completely oxidized In, Zn, Al and Sn (in other words, In2O3, ZnO, Al2O3 and SnO2). Adjacent to the specific recording layers, dielectric layers 232a and 232b of In/Al oxide layers containing at least either of In or Al as a main component are disposed.

Abstract: There is provided an optical recording medium including a substrate, an information recording layer that is formed on the substrate, and has a recording film including a W oxide and an Fe oxide, and a light transmissive layer that is formed on the information recording layer.

Abstract: A recording layer for optical information recording medium excellent in recording property, an optical information recording medium including the recording layer and a sputtering target useful for formation of the recording layer are provided. A recording layer for an optical information recording medium on which recording is performed through irradiation with laser light, the recording layer including an oxide of a metal of which an absolute value of the standard free energy of oxide formation per 1 mol of oxygen is larger than that of Pd (hereinafter referred to metal X) and a Pd oxide, wherein the Pd oxide includes a Pd monoxide and a Pd dioxide, and wherein a ratio of the Pd atom to a total of the metal X atom and the Pd atom which are contained in the recording layer is 4 to 85 atomic %.