Abstract: A deposition device may deposit, on a substrate, a binder layer that includes a first set of magnetic flakes and a second set of magnetic flakes and may cause, when a temperature of the binder layer satisfies a temperature threshold (e.g., a Curie temperature of the first set of magnetic flakes), a magnetic field to be applied to the binder layer to cause the first set of magnetic flakes and the second set of magnetic flakes to be oriented according to the magnetic field. The deposition device may cause, when the temperature of the binder layer ceases to satisfy the temperature threshold, another magnetic field to be applied to the binder layer to cause only the second set of magnetic flakes to be oriented according to the other magnetic field.

Abstract: A magnetic recording medium according to one embodiment includes a base film and a first nonmagnetic layer above the base film. The first nonmagnetic layer has first nonmagnetic particles. A second nonmagnetic layer is positioned above the first nonmagnetic layer, the second nonmagnetic layer having second nonmagnetic particles. A magnetic layer is positioned above the second nonmagnetic layer, the magnetic layer including a magnetic material.

Abstract: An apparatus for materials processing utilizing a rotating magnetic field comprises a platform for supporting a specimen, and a plurality of magnets underlying the platform. The plurality of magnets are configured for rotation about an axis of rotation intersecting the platform. A heat source is disposed above the platform for heating the specimen during the rotation of the plurality of magnets. A method for materials processing utilizing a rotating magnetic field comprises providing a specimen on a platform overlying a plurality of magnets; rotating the plurality of magnets about an axis of rotation intersecting the platform, thereby applying a rotating magnetic field to the specimen; and, while rotating the plurality of magnets, heating the specimen to a desired temperature.

Abstract: A processing device for a medium may include magnetic heads which face a medium transport channel from a lower side, magnetic heads which face the medium transport channel from an upper side, pad rollers which are disposed so as to face each of the magnetic heads, a movement mechanism for evacuating pad rollers from the medium transport channel, and a movement mechanism for evacuating pad rollers from the medium transport channel. In the transport direction for the recording medium, the magnetic head and the magnetic head are offset from each other, and the distance between the magnetic head and the magnetic head in the direction is shorter than the length of the range for recording of magnetic data recorded upon a magnetic stripe of the recording medium.

Abstract: A Fabry-Perot filter is applied as a thin coating on a film, for example, a packaging film, and permits interesting color effects. The coating has a layered construction in which both reflecting layers of the filter may be made of aluminum and the intermediate layer between the reflecting layers may be made of aluminum oxide.

Abstract: A pattern is formed by applying a coating composition containing magnetic particles to an article so that a coating film is formed, and a plurality of sheet form magnets are placed along the front surface of this coating film. Adjacent sheet form magnets are arranged in such a state that the magnetic poles on the front surface and the magnetic poles on the back surface are different between adjacent sheet form magnets, and side surfaces of the sheet form magnets contact each other. The coating composition contains a thermoplastic resin, magnetic particles with flaky form and a specific low boiling point solvent and a specific high boiling point solvent. A magnetic field is applied to the coating film by the sheet form magnets, so that the magnetic particles in the coating film are oriented by the magnetic field and the magnetic particles are oriented substantially parallel to the front surface of the coating film above the contact portions between the sheet form magnets.

Abstract: A pattern is formed by applying a coating composition containing magnetic particles to an article so that a coating film is formed, and a plurality of sheet form magnets are placed along the front surface of this coating film. Adjacent sheet form magnets are arranged in such a state that the magnetic poles on the front surface and the magnetic poles on the back surface are different between adjacent sheet form magnets, and side surfaces of the sheet form magnets contact each other. The coating composition contains a thermoplastic resin, magnetic particles with flaky form and a specific low boiling point solvent and a specific high boiling point solvent. A magnetic field is applied to the coating film by the sheet form magnets, so that the magnetic particles in the coating film are oriented by the magnetic field and the magnetic particles are oriented substantially parallel to the front surface of the coating film above the contact portions between the sheet form magnets.

Abstract: A magnetic field is applied to planarize magnetic pigment flakes relative to a surface. Pigment flakes, such as optically variable pigment flakes, are used in a variety of paints, inks, extrusions, powder coatings, and other forms for decorative and security applications. In many applications pigment flakes tend to align parallel to each other and to the surface to which they are applied. If the pigment flakes include a suitable magnetic structure, a magnetic field can be applied to subsequently align the flakes or enhance the alignment of the flakes in the plane of the substrate if the carrier that the flakes are dispersed in is still fluid. In some printing operations, pigment flakes that are applied parallel to the substrate are pulled out of plane when the print screen or printing die is lifted off the substrate. Application of a magnetic field can re-align pigment flakes to the plane of the substrate, enhancing the visual quality of the printed image, especially with optically variable pigments.

Abstract: With a conventional cylindrical can method, a region used as a film formation ground electrode is a portion of the cylindrical can, and an apparatus becomes larger in size in proportion to the surface area of the electrode. A conveyor device and a film formation apparatus having the conveyor device are provided, which have a unit for continuously conveying a flexible substrate from one end to the other end, and which are characterized in that a plurality of cylindrical rollers are provided between the one end and the other end along an arc with a radius R, the cylindrical rollers being arranged such that their center axes run parallel to each other, and that a mechanism for conveying the flexible substrate while the substrate is in contact with each of the plurality of cylindrical rollers is provided.

Abstract: A method of applying blend drop granules to an asphalt coated sheet includes moving an asphalt coated sheet in a machine direction, and depositing blend drops of granules on a blend drop conveyor that is positioned above the asphalt coated sheet. The blend drop conveyor has an upper flight moving in a direction opposite the machine direction and a lower flight moving in the machine direction. The blend drops are moved from the upper flight to the lower flight of the blend drop conveyor while retaining the blend drops in contact with the blend drop conveyor by magnetic force. Finally. The blend drops are released from the blend drop conveyor for contact with the asphalt coated sheet.

Abstract: A process for producing a magnetic disk having a randomly oriented magnetic powder, comprises: applying a magnetic coating solution containing at least a magnetic powder to a web that is being continuously conveyed, so as to prepare a magnetic layer; applying a first external magnetic field to the magnetic layer while the magnetic layer is wet; and applying a second external magnetic field to the magnetic layer while the magnetic layer is wet, wherein: the first external magnetic field is applied with a set of a first pair of same-pole-opposed magnets with the web interposed therebetween and a second pair of same-pole-opposed magnets with the web interposed therebetween; the first and second pairs are provided on the same plane of the web and on two equal sides of an isosceles triangle so that a perpendicular line dropped from a base of the isosceles triangle forms a line perpendicular to a conveying direction of the web; and the second external magnetic field is an alternating magnetic field, and is applied

Abstract: One aspect of the present invention provides a method of producing a security document, including the steps of: (a) forming a sheet-like substrate of plastics material having first and second opposing surfaces, (b) coating a first layer of polymer material containing magnetic particles on the first opposing surface, (c) melting at least a portion of the first layer such that the magnetic particles can orient under the influence of a magnetic field, (d) applying the magnetic field so as to form a magnetic watermark, and (e) allowing the first layer portion to cool so as to fix the orientation of the magnetic particles

Abstract: A method for manufacturing a magnetic recording medium includes steps of forming a magnetic layer containing magnetic powder particles on a web-like non-magnetic support being continuously transported in one direction and applying a magnetic field to the magnetic layer by a plurality of magnets in such a manner that an angle of the magnetic field applied to the magnetic layer to the transporting direction of the non-magnetic support in a plane perpendicular to a surface of the magnetic layer and parallel to the transporting direction of the non-magnetic support gradually increases in the transporting direction of the non-magnetic support, thereby orienting the magnetic powder particles in an oblique direction with respect to the surface of the magnetic layer.

Abstract: A method to manufacture magnetic recording medium including the step of subjecting the unfinished magnetic recording medium to a random orientation device prior to a drying step, to thereby remove the magnetic anisotropy of the magnetic recording medium caused by the preferential orientation of ferromagnetic fine particles along the travelling direction of the unfinished magnetic recording during the application of a magnetic coating composition onto a non-magnetic support strip. The random orientation device includes a magnet, which is oriented parallel to the plane of the non-magnetic strip and generates a set of lines of magnetic field. Each set of lines of magnetic fields are associated with only one magnet and contain both forward and backward directional magnetic fields in a direction perpendicular to the travelling direction of the unfinished magnetic recording medium. More than one magnet can be used; however, each magnet generates a separate and independent set of such lines of magnetic field.

Abstract: A composite magnetic material showing reduced losses and reduced permeability when it is subjected to a magnetic field at frequencies below approximately 100 MHz. It comprises magnetic particles in the form of wafers dispersed in a dielectric binder. The polycrystalline magnetic ceramic wafers are oriented so that their main faces are substantially parallel to the magnetic field.Application especially to cores of inductors or transformers.

Abstract: This invention intends to provide a coating device capable of forming, in a good work efficiency, a magnetic layer whose surface is free from irregularities in thickness and is flat. The above object is achieved by providing a device wherein a magnetic paint 3A is coated through an extrusion die 1, and, downstream of the die and close to the non-coated side of a substrate 19, a magnetic field generator 12A with a laminated structure composed of plate-like magnets 15 packed in layers is placed inclined by 45.degree.-85.degree. with respect to the running direction R of the substrate. Through this arrangement, the coated surface of magnetic layer 3 will be free from thickness irregularities and be flattened.

Abstract: A process for the in-line, high speed manufacturing of magnetic products is disclosed. The process comprises the steps of printing onto a substrate, drying the ink print, making the appropriate cuts or scores on the substrate, applying a slurry of magnetizable material onto the substrate to create the magnet, drying the applied material, magnetizing the magnetic material and cutting and forming the substrate to the desired dimensions. Each of these steps may be performed in a single, in-line manufacturing operation running at high speeds.

Abstract: In a method of manufacturing magnetic recording medium, the position and operating condition and the like of an orienting device are determined so that a solvent weight ratio X satisfies 0.7.ltoreq.X.ltoreq.1.0.

Abstract: There is provided a coating apparatus capable of achieving high-speed coating and a decrease in thickness of a coating film and obtaining a preferable coating film. In an extrusion type coating apparatus including a die having a coating material reservoir to which a coating material is supplied, the coating material being coated on a continuously traveling support member while the coating material is extruded from a slit formed in a tip of the die, a magnet portion having adjacent tip portions to form a magnetic gap is arranged such that the magnetic portion and the tip portion of the die face each other to interpose the support member therebetween, and upper and lower lips defining the slit at the tip of the die are arranged out of contact with the support member.

Abstract: A coating apparatus and method for applying a coating to a workpiece, comprising:a vessel to contain molten metal;an induction coil disposed about said vessel; and,temperature regulation means;wherein, in use, said induction coil induces a magnetic field within said vessel such that a meniscus of molten metal is formed above said vessel, through which said workpiece is passed for coating, whilst said temperature regulation means regulates temperature of said molten metal and/or controls the meniscus height of said meniscus.

Abstract: A method for producing a magnetic recording medium which results in the effective oblique orientation of magnetic fine particles without aggregation of the particles. The method results in a magnetic recording medium having an upper magnetic layer containing needle-shaped, granular, or plate-like magnetic particles, and at least one lower nonmagnetic layer formed on a nonmagnetic support so that the magnetic particles have the maximum degree of orientation in an oblique or perpendicular direction with respect to a surface of the support. The oblique or perpendicular orientation is performed in the wet state of a magnetic layer and in the condition in which the amount of the solvent residue in the upper magnetic layer is 40 to 80% after the upper magnetic layer and the lower nonmagnetic layer are applied sequentially or simultaneously to form a multilayer.

Abstract: An improved extrusion coater having at least two coater slots for applying one or more magnetizable layers to a flexible nonmagnetic substrate is described. The upper lip of the outlet orifice is recessed relative to the lower lip and, in addition, the edge of a right parallelepiped magnet which has a gradient of more than 400 A/cm.sup.2 in the direction of the extruder slot, resulting in a stabilized liquid cushion, is arranged opposite the outlet orifice for the dispersions from the extrusion coater, on the other side of the substrate. It is thus possible to apply very thin layers and to make the meniscus insensitive to interfering forces. To reduce the edge bead, a stripping plate (13) which is extended beyond the range of the upper or lower lip of the extrusion coater, in the direction of the coated material web (1), is mounted at both coating edges, a minimum distance of from 0.05 to 0.8 mm between the surface (19) of the stripping plate (13) and the coated material web being established (FIG. 1).

Abstract: A porous living body repairing member obtained by compression-molding a metal fiber material into a desired shape, sintering the fiber mesh body or thereafter, and imparting a compressive stress of not more than 4.00 to 40.0 MPa to provide a porous living body repairing member having a compressive elasticity of not more than 2000 MPa and a permanent deformation of not more than 1% under a stress below a compressive yield stress.The compressive yield stress becomes approximately equal to the above compressive stress, and almost complete elasticity of a permanent deformation rate of not more than 0.1% is shown with respect to a compressive stress below this compressive yield stress. Accordingly, even when the porous living body repairing member is used at a high compressive load site such as man's lumbar body, permanent deformation hardly occurs.

Abstract: A magnetic recording medium which is optimum for high-density recording in which not only orientation of magnetic particles to the direction of thickness of a magnetic layer can be performed effectively but the orientation is maintained, and a method for producing such a magnetic recording medium. The method includes the steps of multiply applying a lower layer containing inorganic powder and resin, an intermediate layer containing resin and an upper layer as a magnetic layer containing needle-shaped ferromagnetic powder onto a non-magnetic support in the condition where all the layers are wet, and drying and solidifying the layers while the ferromagnetic powder contained in the upper layer is oriented at a predetermined angle with respect to the direction of thickness of the intermediate layer. In an another embodiment, only two layers are applied to the support including a non-magnetic layer and a magnetic layer.

Abstract: A ferromagnetic .delta.-Mn.sub.1-x Ga.sub.x thin film having perpendicular anisotropy is described which comprises: (a) a GaAs substrate, (b) a layer of undoped GaAs overlying said substrate and bonded thereto having a thickness ranging from about 50 to about 100 nanometers, (c) a layer of .delta.-Mn.sub.1-x Ga.sub.x overlying said layer of undoped GaAs and bonded thereto having a thickness ranging from about 20 to about 30 nanometers, and (d) a layer of GaAs overlying said layer of .delta.-Mn.sub.1-x Ga.sub.x and bonded thereto having a thickness ranging from about 2 to about 5 nanometers, wherein x is 0.4 .+-.0.05.

Abstract: A filter apparatus and coating method particularly adapted for thixotropic coating solutions and which yet permits the dead space within the housing of the filter apparatus for the secondary region to be reduced under a broad range of conditions at all times. The improved filter apparatus has a filter provided within a housing in such a way that it divides the interior of the housing into a primary region into which a coating to be filtered is supplied and a secondary region which receives the coating solution after it is filtered. The apparatus filters the coating solution just before it is coated on a flexible base. The apparatus is characterized in that the housing for the secondary region is designed in such a way that an index for measurement of the dead space within the housing satisfies the relation T/.tau.> 0.95, where .tau. is an experimentally determined dimensionless number for the indicial response time of the housing and T is a dimensionless number of theoretical time.

Abstract: A method of producing a magnetic recording medium comprises the steps of heating in vacuum a magnetic recording medium produced by forming a ferromagnetic metal-film-type recording medium onto a non-magnetic substrate and of forming, immediately after heating, a protective layer on the magnetic recording medium by a plasma CVD method. A production apparatus for carrying out this method comprises a feeding apparatus for feeding a magnetic recording medium with a ferromagnetic thin film formed on a non-magnetic substrate, a plasma CVD apparatus, disposed in the path of this feeding apparatus, for forming a protective layer, and a heating apparatus disposed just before this plasma CVD apparatus in the feeding path.

Abstract: A method of producing a coated magnetic recording medium includes a step of coating a nonmagnetic substrate with a magnetic paste layer mainly composed of acicular or granular magnetic particles and a resin binder, a spontaneous drying step for a specific period for inducing leveling of the coated surface and spontaneous volatilization of solvent without applying a magnetic field from outside after coating the magnetic paint, a first orientation step for dissipating the aggregated particles by a sudden change in magnetic field while inducing magnetic moment in magnetic particles by a strong DC magnetic field inside the coated surface and in a longitudinal direction of the medium for arraying the magnetic particles in the coated surface in the longitudinal direction, and a succeeding second orientation step for suppressing the magnetic repulsive force among the particles while arraying the magnetic particles by a DC magnetic field in the coated surface in the longitudinal direction.

Abstract: A method for manufacturing a magnetic recording medium includes continuously conveying a support, applying a magnetic solution to the support to form a magnetic layer thereon, and subjecting the magnetic layer thus formed on the support to orientation and drying. The magnetic solution is prepared by dispersing magnetic particles therein such that the magnetization of the magnetic solution provided by a magnetic field having a predetermined field strength being applied thereto for one minute satisfies a relationship:M.sub.H /M.sub.S >2H/Hc,where M.sub.S is the saturation magnetization of the magnetic solution, Hc is the coercive force (Oe) of the ferromagnetic particles in the magnetic solution, and Hc/5.gtoreq.H.gtoreq.Hc/50.

Abstract: A randomly varying modulated current is generated and used to drive a magnetic write head in an apparatus for enhancing a randomly varying magnetic security characteristic of a medium. The write head can be positioned adjacent a fluid magnetic slurry for the purpose of altering the location of the various magnetic particles therein in a random fashion. The slurry can then be hardened thermally or using ultraviolet dryers. A circuit which can generate the randomly variable current for the read head includes a modulator which receives a first randomly variable signal and a second, different randomly varying signal which modulates the first signal.