Abstract: A printed wiring board includes a base member that includes a ground wiring pattern and a printed wiring board reinforcing member bonded to the ground wiring pattern in a conductive state. The printed wiring board reinforcing member includes a metal base material layer and a nickel layer bonded to at least a surface on a side opposite to a side bonded to the ground wiring pattern of the metal base material layer by diffusion bonding.

Abstract: An antenna device includes a ground conductor; a ground conductor extension that is connected to the ground conductor; and an antenna element that is connected to the ground conductor and that operates in both a first frequency band and a second frequency band higher than the first frequency band, the ground conductor and the ground conductor extension having a length that is ¼ of a wavelength of a frequency included in a middle range between the first frequency band and the second frequency band and that is not a natural number multiple of ¼ of a wavelength of the first frequency band.

Abstract: It is possible to maintain high-reliable ground effect and reinforcement function over a long period. A printed wiring board includes a base member 112 that includes a ground wiring pattern 115 and a printed wiring board reinforcing member 135 bonded to the ground wiring pattern 115 in a conductive state. The printed wiring board reinforcing member 135 includes a metal base material layer 135a and a nickel layer 135b bonded to at least a surface on a side opposite to a side bonded to the ground wiring pattern 115 of the metal base material layer 135a by diffusion bonding.

Abstract: A wireless mobile device is used with the wireless mobile device mounted on a body of a user and includes a first wireless processor that performs wireless signal processing on a signal for a data communication in a first wireless system, a second wireless processor that performs wireless signal processing on a signal for a voice call in a second wireless system having a higher priority than a priority of the first wireless system, and a controller that, when a data communication in the first wireless system and a voice call in the second wireless system occurred at the same time, in a close-to-head state in which the wireless mobile device is brought close to a head of a user, reduces transmission power with which the first wireless processor outputs a transmission signal.

Abstract: A wireless mobile device is used with the wireless mobile device mounted on a body of a user and includes a first wireless processor that performs wireless signal processing on a signal for a data communication in a first wireless system, a second wireless processor that performs wireless signal processing on a signal for a voice call in a second wireless system having a higher priority than a priority of the first wireless system, and a controller that, when a data communication in the first wireless system and a voice call in the second wireless system occurred at the same time, in a close-to-head state in which the wireless mobile device is brought close to a head of a user, reduces transmission power with which the first wireless processor outputs a transmission signal.

Abstract: An antenna device includes a ground conductor; a ground conductor extension that is connected to the ground conductor; and an antenna element that is connected to the ground conductor and that operates in both a first frequency band and a second frequency band higher than the first frequency band, the ground conductor and the ground conductor extension having a length that is ¼ of a wavelength of a frequency included in a middle range between the first frequency band and the second frequency band and that is not a natural number multiple of ¼ of a wavelength of the first frequency band.

Abstract: The invention provides an inkjet ink composition comprising: a white pigment; a polymerizable compound; and a polymerization initiator. The white pigment includes at least one of inorganic hollow particles or inorganic-organic hybrid hollow particles. A ratio of an average inside diameter of cavities in the at least one of inorganic hollow particles or inorganic-organic hybrid hollow particles to an average outside diameter of the at least one of inorganic hollow particles or inorganic-organic hybrid hollow particles is in a range of from 0.4 to 0.95. Further, a volume average particle diameter of the at least one of inorganic hollow particles or inorganic-organic hybrid hollow particles is in a range of from 0.01 to 1.0 ?m.

Abstract: Provided is an inkjet-recording ink composition comprising one or more white pigment(s), one or more polymer dispersant(s), one or more photocurable compound(s), and one or more photoinitiator(s) as its principal components, wherein the polymer dispersant(s) has a sulfonic acid group.

Abstract: The invention provides an inkjet ink composition comprising: a white pigment; a polymerizable compound; and a polymerization initiator. The white pigment includes at least one of inorganic hollow particles or inorganic-organic hybrid hollow particles. A ratio of an average inside diameter of cavities in the at least one of inorganic hollow particles or inorganic-organic hybrid hollow particles to an average outside diameter of the at least one of inorganic hollow particles or inorganic-organic hybrid hollow particles is in a range of from 0.4 to 0.95. Further, a volume average particle diameter of the at least one of inorganic hollow particles or inorganic-organic hybrid hollow particles is in a range of from 0.01 to 1.0 ?m.

Abstract: Provided is an inkjet-recording ink composition comprising one or more white pigment(s), one or more polymer dispersant(s), one or more photocurable compound(s), and one or more photoinitiator(s) as its principal components, wherein the polymer dispersant(s) has a sulfonic acid group.

Abstract: A magnetic disk comprising an annular flexible substrate and a magnetic layer on at least one substrate major surface is provided with a plastic film ring or a pair of plastic film rings along the outer periphery of the disk. The ring is adhesively secured to the disk on the substrate major surface. The ring thickness is controlled to a specific range relative to the substrate thickness, presenting a magnetic disk featuring stable operation and a minimized output variation.