Abstract: The disclosure provides a development roll for electrophotographic apparatuses. The development roll for electrophotographic apparatuses includes: a shaft; an elastic layer formed on an outer circumferential surface of the shaft; a surface layer formed on an outer circumferential surface of the elastic layer; and an end protection layer formed on an outer circumferential surface of the surface layer at both ends in an axial direction. The end protection layer contains a binder polymer and a surface modification agent that has a cyano group.

Abstract: The disclosure provides a development roll for electrophotographic apparatuses. The development roll for electrophotographic apparatuses includes: a shaft; an elastic layer formed on an outer circumferential surface of the shaft; a surface layer formed on an outer circumferential surface of the elastic layer; and an end protection layer formed on an outer circumferential surface of the surface layer at both ends in an axial direction. The end protection layer contains a binder polymer and a surface modification agent that has a cyano group.

Abstract: A development roller for an electrophotographic device that can both reduce resistance and suppress bleeding-out of an ion-conducting agent is provided. A development roller for an electrophotographic device 10 is provided with a shaft body 12, an elastic body layer 14 formed on the outer periphery of the shaft body 12, and a surface layer formed on the outer periphery of the elastic body layer 14. The surface layer 16 includes the following constituents (a) to (c), and the content of constituent (b) is 3.0 to 60 parts by mass, relative to 100 parts by mass of constituent (a). Constituent (a) is a binder comprising acrylonitrile-butadiene rubber, where the content of acrylonitrile is 31 mass % or more and 36 mass % or less. Constituent (b) is an ion-conducting agent. Constituent (c) is an acrylic polymer comprising at least one selected from among a silicone group and a fluorine group.

Abstract: The invention provides a composition which contains a bacterial powder and a fatty oil and in which caking of the bacterial powder is suppressed, a method for producing the same, and a method of preventing caking. Provided are a composition including a bacterial powder, a fatty oil, and at least one selected from the group consisting of a microscopic powder and a surfactant, wherein the bacterial powder comprises at least one selected from the group consisting of live cells of lactic acid bacteria, killed cells of lactic acid bacteria, live cells of bifidobacteria, and killed cells of bifidobacteria, a method for producing the same, and a method of preventing caking in a composition containing a fatty oil.

Abstract: A development roller for an electrophotographic device that can both reduce resistance and suppress bleeding-out of an ion-conducting agent is provided. A development roller for an electrophotographic device 10 is provided with a shaft body 12, an elastic body layer 14 formed on the outer periphery of the shaft body 12, and a surface layer formed on the outer periphery of the elastic body layer 14. The surface layer 16 includes the following constituents (a) to (c), and the content of constituent (b) is 3.0 to 60 parts by mass, relative to 100 parts by mass of constituent (a). Constituent (a) is a binder comprising acrylonitrile-butadiene rubber, where the content of acrylonitrile is 31 mass % or more and 36 mass % or less. Constituent (b) is an ion-conducting agent. Constituent (c) is an acrylic polymer comprising at least one selected from among a silicone group and a fluorine group.

Abstract: The invention provides a composition which contains a bacterial powder and a fatty oil and in which caking of the bacterial powder is suppressed, a method for producing the same, and a method of preventing caking. Provided are a composition including a bacterial powder, a fatty oil, and at least one selected from the group consisting of a microscopic powder and a surfactant, wherein the bacterial powder comprises at least one selected from the group consisting of live cells of lactic acid bacteria, killed cells of lactic acid bacteria, live cells of bifidobacteria, and killed cells of bifidobacteria, a method for producing the same, and a method of preventing caking in a composition containing a fatty oil.

Abstract: An electrophotography device development roller in which an increase in the electric charge of a toner is suppressed is provided. This electrophotography device development roller 10 is provided with a shaft 12, an elastic layer 14 formed on the outer circumference of the shaft 12, and a surface layer 16 formed on the outer circumference of the elastic layer 14. The surface layer 16 contains components (a) to (c) below. Component (a) a binder comprising acrylonitrile-butadiene rubber having an acrylonitrile amount of 30 mass % or more; component (b) an ion-conducting agent comprising at least one selected from a phosphonium salt and a pyridinium salt; and component (c) an electric charge regulator comprising an acrylic polymer having a silicone group or fluorine-containing group and a cationic group.

Abstract: An electrophotography device development roller in which an increase in the electric charge of a toner is suppressed is provided. This electrophotography device development roller 10 is provided with a shaft 12, an elastic layer 14 formed on the outer circumference of the shaft 12, and a surface layer 16 formed on the outer circumference of the elastic layer 14. The surface layer 16 contains (a) to (c) below. (a) A binder comprising acrylonitrile-butadiene rubber having an acrylonitrile amount of 30 mass % or more; (b) an ion-conducting agent comprising at least one selected from a phosphonium salt and a pyridinium salt; and (c) an electric charge regulator comprising an acrylic polymer having a silicone group or fluorine-containing group and a cationic group.

Abstract: Provided are valve devices that can be formed compactly. A valve device includes a primary-side valve element including a planar part and a secondary-side valve element connected to the primary-side valve element to be slidable to the planar part of the primary-side valve element, in which a water discharge state can be switched by sliding the primary-side valve element or the secondary-side valve element. The secondary-side valve element includes a packing member that contacts the planar part of the primary-side valve element. The primary-side valve element can include a disk member including the planar part, and the disk member is made from metal.

Abstract: To provide a technology capable of promoting growth of Bifidobacterium bacteria and lactic acid bacteria under an environment causing the growth or no change in cell count while suppressing decrease under an environment causing the decrease. Provided is an agent for promoting the growth of, and/or suppressing a decrease in, Bifidobacterium bacteria and/or lactic acid bacteria containing Arthrospira blue-green algae and/or Spirulina blue-green algae as an active ingredient. Also provided is an oral composition including Arthrospira blue-green algae and/or Spirulina blue-green algae together with at least one type of bacteria selected from the group consisting of Bifidobacterium bacteria and lactic acid bacteria.