Abstract: A polymer nanofiber structural body of the present invention is a polymer nanofiber structural body in which polymer nanofibers are integrated, including a first layer and a second layer different from each other in polymer nanofiber existence ratio, in which: both the first layer and the second layer are laminated through a buffer region; the buffer region includes a region in direct contact with both the first layer and the second layer; and a polymer nanofiber existence ratio of the region continuously changes from a polymer nanofiber existence ratio of the first layer to a polymer nanofiber existence ratio of the second layer in a direction from the first layer to the second layer.

Abstract: Provided is a nanofiber accumulated body having a high mechanical strength and excellent in durability, the polymer nanofiber accumulated body including polymer nanofibers each containing a polymer material, the polymer nanofibers being accumulated and three-dimensionally entangled with each other to form the accumulated body, in which: the polymer nanofibers each have a fiber diameter of 3 ?m or less; and the polymer nanofibers each contain 5 wt % to 30 wt % of a low-molecular weight organic compound having at least one ?,?-unsaturated ester structure, with respect to a total weight of the polymer nanofibers.

Abstract: A ceramic electronic device includes: a ceramic main body that has at least two edge faces facing each other, has an internal electrode layer inside thereof and has a parallelepiped shape; and external electrodes formed on the two edge faces, wherein: the external electrodes have at least a plated layer; an oxide film of a metal for plating of the plated layer on a region that is a part of at least one of four side faces of the ceramic main body other than the two edge faces, the region not being covered with the external electrodes; and a ratio of (a peak area of an oxide of the metal for plating)/(a peak area of the metal for plating) is 13.1 or more in a photoelectron spectrum of an outermost surface of the oxide film.

Abstract: According to one embodiment, an image forming apparatus includes an accommodation unit and at least one driving roller. The accommodation unit accommodates a paper sheet therein. The at least one driving roller is disposed contactably with the paper sheet. A rotation direction of the at least one driving roller with respect to the paper sheet at a contact part between the paper sheet and the roller intersects a carrying direction of the paper sheet.

Abstract: Provided is a glossy member, including: a polymer substrate; and a polymer fiber assembly disposed on the polymer substrate, in which: the polymer fiber assembly has polymer fibers oriented in a given direction; an absolute value of a difference between an average solubility parameter of a constituent material for the polymer substrate and an average solubility parameter of a polymer material of the polymer fibers is less than 5 (J/cm3)1/2; the polymer fibers have an orientation degree of 90% or more; the polymer fibers have fiber diameters of 0.05 ?m or more and 5 ?m or less; and in at least part of a repeating unit structure in the polymer material, a dipole moment is 0 D or more and 3.50 D or less, and an absolute value of a SOMO is 9 eV or more and 12 eV or less.

Abstract: According to one embodiment, an image forming apparatus includes an accommodation unit and at least one driving roller. The accommodation unit accommodates a paper sheet therein. The at least one driving roller is disposed contactably with the paper sheet. A rotation direction of the at least one driving roller with respect to the paper sheet at a contact part between the paper sheet and the roller intersects a carrying direction of the paper sheet.

Abstract: Provided is a sliding member, which is reduced in friction under sliding conditions of high load and high speed under an oilless condition, and is excellent in wear resistance. The sliding member includes: a shaft; and at least one intervening member, in which: the at least one intervening member is located between the shaft and a bearing, and is operable independently of the shaft; and at least one surface of the at least one intervening member on a shaft side includes a sliding surface under one of a radial load and an axial load.

Abstract: According to one embodiment, an image forming apparatus includes an accommodation unit and at least one driving roller. The accommodation unit accommodates a paper sheet therein. The at least one driving roller is disposed contactably with the paper sheet. A rotation direction of the at least one driving roller with respect to the paper sheet at a contact part between the paper sheet and the roller intersects a carrying direction of the paper sheet.

Abstract: To provide, between separated first sliding surfaces (DLC), a material of which frictional coefficient is higher than that of DLC at a temperature of 25° C. and a humidity of 45% as a second sliding surface.

Abstract: A method of producing a polymer nanofiber structural body of the present invention includes: forming, on a base material, a first layer in which polymer nanofibers are irregularly integrated by an electrospinning method; cutting the first layer together with the base material; and irradiating an argon beam from a base material side in parallel with a fracture surface to direct the length directions of the polymer nanofibers of the first layer on the base material side toward the thickness direction of the first layer to form a second layer different from the first layer in pore structure, thereby providing a polymer nanofiber structural body having a plurality of pore structures and free of any clear interface.

Abstract: An electrophotographic electroconductive member which keeps high discharge performance even in use under a high temperature and high humidity environment is provided. The electroconductive member includes an electroconductive substrate, and a surface layer including a net-like structural body disposed on the electroconductive substrate, wherein the net-like structural body includes non-electroconductive fibers containing a radiation degradable resin.

Abstract: Provided is an electro-conductive member including: an electro-conductive support; and a surface layer, in which: the surface layer has a three-dimensionally continuous skeleton and has pores communicating in a thickness direction thereof, and when an arbitrary 150-micrometer square region of the surface of the surface layer is equally divided into 3,600 squares, the number of squares each including a through-hole is 100 or less; the skeleton is non-electro-conductive; the skeleton includes a plurality of resin particles bonded to each other through necks; the resin particles each contain a radiation degradable resin; and an average D1 of the circle-equivalent diameters of the resin particles is 0.1 ?m or more and 20 ?m or less.

Abstract: An optical member including a porous glass layer on a base member is provided, wherein the reflectance is reduced and a ripple is suppressed. The optical member is provided with a base member and a glass layer holding a transparent material in the inside of a porous structure disposed on the base member, wherein in the thickness direction of the glass layer, the porosity in the base member side with respect to the center line of the glass layer in the thickness direction is smaller than the porosity in the side opposite to the base member with respect to the center line of the glass layer in the thickness direction.

Abstract: In a nanofiber structure in which a nanofiber A and a nanofiber B are tangled with each other, the softening point of the nanofiber A is different from that of the nanofiber B, a cross-section along a surface of the nanofiber A orthogonal to a longitudinal direction thereof has a shape having a concave portion, and the nanofiber A and the nanofiber B are fused with each other at this concave portion.

Abstract: Provided is a nanofiber accumulated body having a high mechanical strength and excellent in durability, the polymer nanofiber accumulated body including polymer nanofibers each containing a polymer material, the polymer nanofibers being accumulated and three-dimensionally entangled with each other to form the accumulated body, in which: the polymer nanofibers each have a fiber diameter of 3 ?m or less; and the polymer nanofibers each contain 5 wt % to 30 wt % of a low-molecular weight organic compound having at least one ?,?-unsaturated ester structure, with respect to a total weight of the polymer nanofibers.

Abstract: Provided is a porous laminate having satisfactory resistance to a mechanical load such as a bending stress while maintaining the characteristics of a porous structure. A porous laminate includes: a layer A formed on a support, the layer A including a porous film containing polymer nanofibers; and a layer B formed on the layer A, the layer B including a porous film containing polymer nanofibers, in which: an existence ratio of the polymer nanofibers contained in the layer A) is larger than an existence ratio of the polymer nanofibers contained in the layer B; and a difference between the existence ratio of the polymer nanofibers contained in the layer A and the existence ratio of the polymer nanofibers contained in the layer B is more than 40%.

Abstract: Based on an electrospinning method, a layer A formed of a polymer continuous phase is formed by: setting a potential difference between an ejection portion configured to eject a polymer solution and a collecting portion configured to collect the polymer nanofibers to a voltage value at which the polymer nanofibers can be spun; and setting the potential of the collecting portion to a low value with respect to a ground potential. Next, a layer B formed of polymer nanofibers and a polymer continuous phase is formed by increasing the potential of the collecting portion without stopping the application of voltages to the ejection portion and the collecting portion. Further, a layer C formed of polymer nanofibers is formed by increasing the potential of the collecting portion without stopping the application of the voltages to the ejection portion and the collecting portion.

Abstract: The present invention provides an optical member having a high transmittance, wherein a composition change of a phase-separable base material glass film is suppressed. A method for manufacturing an optical member provided with a porous glass film on the base member includes the steps of forming a glass powder film containing a glass powder on the base member, forming a phase-separable base material glass film on the base member by heating and fusing the glass powder film in an atmosphere having an oxygen concentration of more than 20%, forming a phase-separated glass film on the base member by heating the base material glass film, and forming a porous glass film on the base member by subjecting the phase-separated glass film to an etching treatment.

Abstract: Provided is a rubber composition for producing a rubber molded article that is improved in fouling resistance while being reduced in tackiness and frictional force despite the presence of the rubber in its surface. The rubber composition includes: a rubber A; and a plastic B, in which: the rubber A includes a non-fluorine-based rubber material; a difference in elastic modulus between the rubber A and the plastic B is 50 MPa or more; a sea-island structure having a sea portion containing the rubber A and a plurality of island portions each containing the plastic B is formed; the plastic B is contained at a content of more than 0 vol % and 50 vol % or less with respect to a total amount of the rubber A and the plastic B; and 90% or more of the plurality of island portions each have a volume of 4,000 ?m3 or less.

Abstract: The present invention provides an optical member including a porous glass film on a base member, wherein a ripple is suppressed. The optical member includes the base member and the porous glass film disposed on the base member, wherein the porosity increases in the direction from the base member toward the porous glass film in an interfacial region between the base member and the porous glass film and the porosity is continuous in the film thickness direction from the base member to the surface of the porous glass film in the optical member.