Abstract: A server includes means for receiving a request for conversion from a first electronic value into a second electronic value from a user's terminal via a network, means for receiving an investment instruction to invest in the second electronic value obtained by the conversion from the user's terminal via the network, holding means for holding information regarding a type of merchandise corresponding to the second electronic value and a range of the second electronic value in association with each other, means for receiving a redemption instruction to redeem the second electronic value for the merchandise from the user's terminal via the network, the second electronic value being increased or decreased by the investment, and means for referring to the holding means and performing merchandise redemption processing on a basis of the received redemption instruction.

Abstract: A method for manufacturing a battery includes: a first cutting step of cutting a laminate at a first cutting position to form a first cut surface, the laminate including at least one battery cell having a positive electrode layer, a negative electrode layer, and a solid electrolyte layer located between the positive electrode layer and the negative electrode layer; and a second cutting step of cutting the laminate cut in the first cutting step at a second cutting position inside the first cutting position to form a second cut surface. In the second cutting step, Rz1<W <5Rz1 is satisfied, where W denotes a distance between the first cut surface and the second cut surface to be formed and Rz1 denotes a surface roughness of the first cut surface.

Abstract: A battery includes a power-generating element and an insulating layer. The power-generating element includes an electrode layer, a counter-electrode layer placed to face the electrode layer, and a solid electrolyte layer located between the electrode layer and the counter-electrode layer. The insulating layer includes a first insulating film that extends inward from ends of the power-generating element in a planar view of a principal surface of the power-generating element and a second insulating film that covers a side surface of the power-generating element and that is continuous with ends of the first insulating film. The second insulating film is thinner than the first insulating film.

Abstract: A solid electrolyte composition contains a solvent and an ion conductor dispersed in the solvent, the ion conductor including a solid electrolyte and a binder, wherein 0.40<S?/S?<0.80 is satisfied, where S? represents a specific surface area of the solid electrolyte, and S? represents a specific surface area of the ion conductor. For the solid electrolyte composition, 0.45<S?/S?<0.75 may be satisfied.

Abstract: A battery includes: a power generation element having a structure in which battery cells are laminated, each of the battery cells including an electrode layer, a counter electrode layer, and a solid electrolyte layer located between the electrode layer and the counter electrode layer. The power generation element includes a first pair of side surfaces facing each other, and a second pair of side surfaces facing each other and different from the first pair of side surfaces. At least one of the battery cells is provided with a recess where the solid electrolyte layer is receded with respect to the electrode layer and the counter electrode layer on each of the first pair of side surfaces. Surface roughness Rz2 of each of the second pair of side surfaces is smaller than surface roughness Rz1 of each of the first pair of side surfaces.

Abstract: A battery includes: a power generation element including battery cells each of which includes an electrode layer, a counter-electrode layer, and a solid electrolyte layer located between the electrode layer and the counter-electrode layer, and which are electrically connected in parallel and stacked; an insulating member covering an electrode layer at a side surface of the power generation element; and a terminal electrode covering the side surface and the insulating member, and electrically connected to a counter-electrode layer, in which the power generation element includes: a first parallel unit that includes first battery cells and has both ends in a stacking direction at each of which a counter-electrode layer is located; and a second parallel unit that includes second battery cells, has both ends in the stacking direction at each of which an electrode layers is located, and is stacked on the first parallel unit.

Abstract: A battery includes battery cells. A battery cell includes a positive electrode active material layer, a negative electrode active material layer, and a solid electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer. On a side surface of the battery cell, in a plan view of the side surface of the battery cell, striated cut marks which are inclined with respect to the thickness direction of the battery cell are provided.

Abstract: A magnetic recording medium having high running stability and good magnetic characteristics without causing an abrasion problem, which comprises a base film, a magnetic layer provided on one surface (i.e. the major surface) of the base film and a back coat layer provided on the other surface (i.e. the back surface) of the base film, the back coat layer comprising a binder and non-magnetic particles dispersed therein, characterized in that the non-magnetic particles comprise at least one soft inorganic pigment having a hardness of less than 5 in Mohs' scale of hardness and at least one hard inorganic pigment of not less than 5 in Mohs' scale of hardness and of not more than 0.2 .mu.m in average particle size in a weight ratio of the soft pigment to the hard pigment of 99:1 to 50:50.

Abstract: Magnetic recording medium having a magnetic layer in which magnetic powder of the magnetic layer includes iron oxide magnetic powder with more than 30 m.sup.2 /g specific surface area measured by BET method, chromium dioxide (CrO.sub.2) magnetic powder with more than 30 m.sup.2 /g specific surface area measured by BET method, and the rate of the chromium dioxide powder is within a range more than 3% to less than 20% by weight in the total amount of the magnetic powder in the magnetic powder. Said magnetic layer further includes carbon black.

Abstract: A magnetic recording medium having a high durability with good electro-magnetic properties, which comprises a base material and a magnetic layer provided thereon, the magnetic layer containing magnetic particles and a binder, characterized in that the magnetic layer further comprises alpha-Fe.sub.2 O.sub.3 particles, Al.sub.2 O.sub.3 particles and Cr.sub.2 O.sub.3 particles.

Abstract: A pressure-sensitive adhesive composition comprising a liquid diene polymer containing therein an average of about 2.0 to about 2.5 functional groups capable of reacting with an isocyanate group, an isocyanate compound containing therein 2 or more isocyanate groups, and a tackifier, wherein an anionic surface active agent is compounded therewith in an amount of about 0.2 to about 10 parts by weight per 100 parts by weight of the total weight of the liquid diene polymer and the isocyanate compound. This pressure-sensitive adhesive composition is coated on a support and heated to produce a pressure-sensitive adhesive layer whereby a pressure-sensitive adhesive tape, for example, can be obtained.

Abstract: A pressure-sensitive adhesive composition comprising a liquid diene polymer containing in the molecule thereof an average of about 2.0 to about 2.5 functional groups capable of reacting with an isocyanate group, an isocyanate compound containing in the molecule thereof 2 or more isocyanate groups and a tackifier containing therein at least one polar group selected from the class consisting of --COOH, --OH, and --CH.sub.2 OH, wherein the isocyanate compound is present in such amount that the isocyanate group(s) of the isocyanate compound is/are present in an amount of about 0.75 to about 1.2 equivalents per equivalent of the functional groups of the liquid diene based polymer, and the tackifier is present in an amount of about 10 to about 70, preferably 30 to 60, parts by weight per 100 parts by weight of the total weight of the liquid diene polymer and the isocyanate compound.