Abstract: A contact roller according to one embodiment includes a cylindrical rubber roll main body, two spiral groove groups provided in a surface of the rubber roll main body, spiral rubber layers which is provided in the groove groups and hardness of which is lower than the rubber roll main body, and a surface rubber layer which covers a surface of the rubber roll main body and hardness of which is lower than that of the rubber roll main body. Nip pressure of the surface rubber layer corresponding to the rubber roll main body is higher than that of the surface rubber layer corresponding to the spiral rubber layers.

Abstract: A contact roller according to one embodiment includes a cylindrical rubber roll main body, two spiral groove groups provided in a surface of the rubber roll main body, spiral rubber layers which is provided in the groove groups and hardness of which is lower than the rubber roll main body, and a surface rubber layer which covers a surface of the rubber roll main body and hardness of which is lower than that of the rubber roll main body. Nip pressure of the surface rubber layer corresponding to the rubber roll main body is higher than that of the surface rubber layer corresponding to the spiral rubber layers.

Abstract: This heat fixing belt is provided with a tubular belt base that is formed from an insulating heat-resistant resin, an elastic resistive heat generation layer that is formed from an elastic base material containing an elastic material and contains conductive material, a toner release layer, and a pair of electrode layers for feeding a power to the elastic resistive heat generation layer. The elastic resistive heat generation layer is provided on the outer circumferential surface of the belt base. The toner release layer is provided as the outermost layer. The pair of electrode layers are provided on both end portions of the outer circumferential surface of the elastic resistive heat generation layer, and have a volume resistivity that is lower than the volume resistivity of the elastic resistive heat generation layer.

Abstract: This heat fixing belt is provided with a tubular belt base that is formed from an insulating heat-resistant resin, an elastic resistive heat generation layer that is formed from an elastic base material containing an elastic material and contains conductive material, a toner release layer, and a pair of electrode layers for feeding a power to the elastic resistive heat generation layer. The elastic resistive heat generation layer is provided on the outer circumferential surface of the belt base. The toner release layer is provided as the outermost layer. The pair of electrode layers are provided on both end portions of the outer circumferential surface of the elastic resistive heat generation layer, and have a volume resistivity that is lower than the volume resistivity of the elastic resistive heat generation layer.

Abstract: According to one embodiment, a flexographic printing plate material includes a printing layer for engraving containing rubber, a compressive layer, a base fabric layer provided between the printing layer for engraving and the compressive layer and a reinforcement layer. The plate material has a thickness of more than 2.75 mm and less than or equal to 7 mm. A ratio of a thickness of the printing layer for engraving to the thickness of the plate material is greater than or equal to 10% and less than or equal to 78%, and a ratio of a thickness of the compressive layer to the thickness of the plate material is greater than or equal to 6% and less than or equal to 78%.

Abstract: According to one embodiment, a flexographic printing plate material includes a printing layer for engraving containing rubber, a compressive layer, a base fabric layer provided between the printing layer for engraving and the compressive layer, and a reinforcement layer.

Abstract: Each of an intermediate transfer blanket and an intermediate transfer body for electrophotographic printing uses liquid toner for transferring the liquid toner in which toner particles formed by a thermoplastic material and a pigment are distributed and mixed in a petroleum solvent in the liquid toner, and a conducting layer that is formed by urethane rubber is provided on a front surface of a blanket, thereby realizing high-quality electrophotographic printing.

Abstract: The present invention provides a manufacturing method of a compressible printing layer, comprising a vulcanizing step comprising a first heating process in which one surface of a compressible printing layer including an unvulcanized compressible layer containing microcapsules is heated by bringing the one surface of the compressible printing layer into contact with the surface of at least one heated metal roll while applying tension to the compressible printing layer, and a second heating process in which the other surface of the compressible printing layer is heated by bringing the other surface of the compressible printing layer into contact with the surface of at least one heated metal roll while applying tension to the compressible printing layer.

Abstract: A printing blanket is designed to have less sink-down, less variation in thickness along with time, less susceptible to temperature or moisture, and which employs woven fabric having excellent measurement stability, thereby having a sufficient durability against variation in thickness in high-speed printing. The printing rubber blanket includes a surface rubber layer, and at least two fabric layers, in which at least one of the fabric layers other than that located adjacent to the surface rubber layer is woven fabric made of a yarn of No. 10 count or less but No. 6 count or more used for warps of the woven fabric, and a yarn of No. 30 count or less but No. 20 count or more used for wefts of the woven fabric, and the woven fabric is subjected to a stretching process in which the woven fabric is expanded in the warp direction.

Abstract: A printing rubber blanket includes a surface rubber layer, a second base fabric layer and a first base fabric layer to be provided between the surface rubber layer and second base fabric layer, wherein the first base fabric layer contains at least one type of fiber selected from the group consisting of nylon-based fiber, polyester-based fiber, polyvinyl-alcohol-based fiber, polyolefin-based fiber, rayon fiber, and cotton fiber, and has a thickness within a range of 0.17 to 0.33 mm, a residual elongation within a range of 7% (inclusive) to 15% (exclusive) in a printing direction, and a breaking strength within a range of 20 to 70 kgf/cm in the printing direction.

Abstract: Disclosed is an electrically conductive member, comprising a substrate of a metal or a resin and an electrically conductive elastic layer formed to cover the substrate, wherein the electrically conductive elastic layer is formed of a rubber elastic body prepared by dispersing at least an electrically conductive powder used as a conductive agent into a rubber compound, followed by vulcanizing the rubber compound, the electrically conductive powder being obtained by curing and powdering an electrically conductive rubber compound or an electrically conductive resin mixture.

Abstract: Disclosed is a compressible printing blanket in which voids are formed in the compressible layer by using microballoons, comprising at least two fabric layers, an adhesive layer interposed between adjacent fabric layers, a surface rubber layer, and a compressible layer arranged between the at least two fabric layers and the surface rubber layer and containing spherical voids and voids having a shape other than a sphere in a ratio defined in formula given below: S1:S2=20:80 to 95:5 ??(1) where, S1 denotes the number of spherical voids per unit area in a cross section of the compressible layer, and S2 denotes the number of voids having a shape other than a sphere per unit area in a cross section of the compressible layer.

Abstract: Disclosed is a compressible printing blanket in which voids are formed in the compressible layer by using microballoons, comprising at least two fabric layers, an adhesive layer interposed between adjacent fabric layers, a surface rubber layer, and a compressible layer arranged between the at least two fabric layers and the surface rubber layer and containing spherical voids and voids having a shape other than a sphere in a ratio defined in formula given below: S1:S2=20:80 to 95:5 ??(1) where, S1 denotes the number of spherical voids per unit area in a cross section of the compressible layer, and S2 denotes the number of voids having a shape other than a sphere per unit area in a cross section of the compressible layer.

Abstract: The present invention provides a manufacturing method of a compressible printing layer, comprising a vulcanizing step comprising a first heating process in which one surface of a compressible printing layer including an unvulcanized compressible layer containing microcapsules is heated by bringing the one surface of the compressible printing layer into contact with the surface of at least one heated metal roll while applying tension to the compressible printing layer, and a second heating process in which the other surface of the compressible printing layer is heated by bringing the other surface of the compressible printing layer into contact with the surface of at least one heated metal roll while applying tension to the compressible printing layer.

Abstract: Disclosed is an electrically conductive member, comprising a substrate of a metal or a resin and an electrically conductive elastic layer formed to cover the substrate, wherein the electrically conductive elastic layer is formed of a rubber elastic body prepared by dispersing at least an electrically conductive powder used as a conductive agent into a rubber compound, followed by vulcanizing the rubber compound, the electrically conductive powder being obtained by curing and powdering an electrically conductive rubber compound or an electrically conductive resin mixture.

Abstract: The present invention provides a rubber blanket for an offset printing, comprising a surface rubber layer, a first fabric layer, a compressible layer and a second fabric layer, wherein the thickness of the blanket falls within a range of between 1.65 mm and 3 mm, the first fabric layer is a plain weave having a thickness falling within a range of between 0.2 mm and 0.35 mm, the second fabric layer is a plain weave having a thickness falling within a range of between 0.35 mm and 0.55 mm, a tensile strength not lower than 50 kgf/cm, and an elongation at break not higher than 7.5%, and the compressible layer has a thickness falling within a range of between 0.5 mm and 2.15 mm.

Abstract: The present invention provides a rubber blanket for an offset printing, comprising a surface rubber layer, a first fabric layer, a compressible layer and a second fabric layer, wherein the thickness of the blanket falls within a range of between 1.65 mm and 3 mm, the first fabric layer is a plain weave having a thickness falling within a range of between 0.2 mm and 0.35 mm, the second fabric layer is a plain weave having a thickness falling within a range of between 0.35 mm and 0.55 mm, a tensile strength not lower than 50 kgf/cm, and an elongation at break not higher than 7.5%, and the compressible layer has a thickness falling within a range of between 0.5 mm and 2.15 mm.

Abstract: The present invention provides a manufacturing method of a compressible printing layer, comprising a vulcanizing step comprising a first heating process in which one surface of a compressible printing layer including an unvulcanized compressible layer containing microcapsules is heated by bringing the one surface of the compressible printing layer into contact with the surface of at least one heated metal roll while applying tension to the compressible printing layer, and a second heating process in which the other surface of the compressible printing layer is heated by bringing the other surface of the compressible printing layer into contact with the surface of at least one heated metal roll while applying tension to the compressible printing layer.

Abstract: Disclosed is a compressible printing blanket in which voids are formed in the compressible layer by using microballoons, comprising at least two fabric layers, an adhesive layer interposed between adjacent fabric layers, a surface rubber layer, and a compressible layer arranged between the at least two fabric layers and the surface rubber layer and containing spherical voids and voids having a shape other than a sphere in a ratio defined in formula given below:

Abstract: Disclosed is a transfer-fixing belt for an electronic appliance, comprising a seamless reinforcing layer made of a continuous string, a heat resistant rubber layer formed on the reinforcing layer, and a heat resistant resin layer formed on the heat resistant rubber layer and adapted for releasing the toner attached thereto.