Provided is an electromagnetic-wave absorber that can favorably absorb electromagnetic waves of a plurality of different frequencies in a high frequency band equal to or higher than the millimeter-wave band. The electromagnetic-wave absorber includes an electromagnetic-wave absorbing layer 1 in which a plurality of magnetic layers 1a-1e are stacked, each magnetic layer containing magnetic iron oxide that magnetically resonates at a high frequency in a band equal to or higher than the millimeter-wave band. A value of an anisotropic magnetic field (H.sub.A) of the magnetic iron oxide contained in at least one of the magnetic layers is different from that of the magnetic iron oxide contained in another of the magnetic layers.

A curved screen attaching device is provided for achieving an attachment between a flexible display layer and a curved cover, and includes: a base platform formed with a curved surface on an upper surface thereof; a magnet layer provided on a bottom of the curved surface and having a plurality of strip-type magnetic field generators disposed independent of each other; an attaching roller magnetically attracted to and moved on the curved surface to process a roll forming on the flexible display layer; and a controller configured to control the strip-type magnetic field generators to be switched on or off to form a moving magnetic field to guide and move the attaching roller.

A curved screen attaching device is provided for achieving an attachment between a flexible display layer and a curved cover, and includes: a base platform formed with a curved surface on an upper surface thereof; a magnet layer provided on a bottom of the curved surface and having a plurality of strip-type magnetic field generators disposed independent of each other; an attaching roller magnetically attracted to and moved on the curved surface to process a roll forming on the flexible display layer; and a controller configured to control the strip-type magnetic field generators to be switched on or off to form a moving magnetic field to guide and move the attaching roller.

Provided is a method for a magnetic encoder having a magnetic body comprised of a magnetic rubber molded article, comprising a mixing step of mixing and then kneading a nitrile rubber (A), a ferrite magnetic powder (B) and a vulcanizing agent (C) to provide a magnetic rubber composition; and a molding step of molding and vulcanizing the magnetic rubber composition in a mold to which a magnetic field is applied to provide the magnetic rubber molded article, wherein a content of the ferrite magnetic powder (B) is 700 to 1500 parts by mass based on 100 parts by mass of the nitrile rubber (A); and a compressed density of the ferrite magnetic powder (B) is 3.5 g/cm.sup.3 or more. According to this method, a magnetic encoder having a magnetic body with high coercivity and residual magnetic flux density can be produced by vulcanizing a magnetic rubber composition having favorable moldability.

Provided is a method for a magnetic encoder having a magnetic body comprised of a magnetic rubber molded article, comprising a mixing step of mixing and then kneading a nitrile rubber (A), a ferrite magnetic powder (B) and a vulcanizing agent (C) to provide a magnetic rubber composition; and a molding step of molding and vulcanizing the magnetic rubber composition in a mold to which a magnetic field is applied to provide the magnetic rubber molded article, wherein a content of the ferrite magnetic powder (B) is 700 to 1500 parts by mass based on 100 parts by mass of the nitrile rubber (A); and a compressed density of the ferrite magnetic powder (B) is 3.5 g/cm.sup.3 or more. According to this method, a magnetic encoder having a magnetic body with high coercivity and residual magnetic flux density can be produced by vulcanizing a magnetic rubber composition having favorable moldability.

Disclosed is a method of magnetising a substrate comprising the steps of: preparing a magnetising coat by dispersing a plurality of particles of at least one magnetisable material in a binder; applying the magnetising coat on a surface of the substrate;

setting the magnetising coat; and magnetising the magnetisable material in the magnetising coat by exposing the magnetising coat to a magnetic field.

Disclosed is a method of magnetising a substrate comprising the steps of: preparing a magnetising coat by dispersing a plurality of particles of at least one magnetisable material in a binder; applying the magnetising coat on a surface of the substrate;

setting the magnetising coat; and magnetising the magnetisable material in the magnetising coat by exposing the magnetising coat to a magnetic field.

A noise reduction tool includes a magnetic body that can be wound around, more than one turn around an axis of an electric wire or an electric wire bundle, the electric wire or the electric wire bundle and a fixing member that fixes, to each other, overlapping sections of a stacked portion in the magnetic body having a winding shape wound around the electric wire or the electric wire bundle and fixes the magnetic body to the electric wire or the electric wire bundle while keeping the winding shape of the magnetic body. The magnetic body is capable of changing a winding diameter according to an electric wire diameter of the electric wire or an electric wire bundle diameter of the electric wire bundle, and the fixing member fixes, to each other, the overlapping sections corresponding to a winding diameter of the magnetic body irrespective of the winding diameter.

A noise reduction tool includes a magnetic body that can be wound around, more than one turn around an axis of an electric wire or an electric wire bundle, the electric wire or the electric wire bundle and a fixing member that fixes, to each other, overlapping sections of a stacked portion in the magnetic body having a winding shape wound around the electric wire or the electric wire bundle and fixes the magnetic body to the electric wire or the electric wire bundle while keeping the winding shape of the magnetic body. The magnetic body is capable of changing a winding diameter according to an electric wire diameter of the electric wire or an electric wire bundle diameter of the electric wire bundle, and the fixing member fixes, to each other, the overlapping sections corresponding to a winding diameter of the magnetic body irrespective of the winding diameter.

A noise reduction tool includes a sheet-like or belt-like magnetic body that can be wound. In the magnetic body, electric wires, axial directions of which are aligned with a winding axis direction of a winding shape, are disposed side by side around an axis of a winding axis on one plane disposed on the inner side in the winding shape. For example, in the magnetic body, an adhesive to be bonded to the other plane is provided on one plane of an end portion located on the outermost side of both end portions extending along the winding axis direction in the winding shape.