Abstract: A cathode active material for a non-aqueous electrolyte secondary cell having a c-axis length of lattice constant of 14.080 to 14.160 Å, an average particle size of 0.1 to 5.0 &mgr;m, and a composition represented by the formula: LiCo(1−x−y)MnxMgyO2 wherein x is a number of 0.008 to 0.18; and y is a number of 0 to 0.18. This cathode active material is capable of maintaining an initial discharge capacity required for secondary cells and showing improved charge/discharge cycle characteristics under high temperature conditions.

Abstract: A magnetic recording medium including a substrate and formed on the substrate a maghemite thin film having a surface roughness represented by a center line mean roughness Ra of 0.1 to 1.0 nm, and a coercive force squareness S* value of not less than 0.50. This magnetic recording medium exhibits excellent magnetic properties, especially, coercive force squareness S* value and a more enhanced surface smoothness.

Abstract: Spindle-shaped magnetic alloy particles containing Fe and Co as main components of the present invention have a cobalt content of 20 to 50 atm % (calculated as Co) based on whole Fe; an average major axis diameter (L) of 0.03 to 0.10 &mgr;m; a coercive force value of 159.2 to 238.7 kA/m (2,000 to 3,000 Oe); a crystallite size of 100 to 160 Å; and an activation volume (Vact) of 0.01 to 0.07E-4 &mgr;m3. A high-density magnetic recording medium produced by using such spindle-shaped magnetic alloy particles containing Fe and Co as main components, have an excellent output characteristics in a short wavelength region, a considerably reduced noise and an excellent storage stability.

Abstract: A magnetic recording medium, comprises a substrate; and a Co-containing spinel-type iron oxide thin film formed on the substrate, having a Co content of 1 to 20 mol % based on Fe, a coercive force value of not less than 159 kA/m (2,000 Oe), a thickness of 5 to 200 nm, a center line average height Ra of 0.1 to 0.8 nm and a maximum height (Rmax) of not more than 10 nm. The magnetic recording medium is capable of exhibiting a relatively high coercive force, especially a coercive force of not less than 159 kA/m (2,000 Oe) despite as small a film thickness as not more than 200 nm, and an excellent surface smoothness.

Abstract: A color toner comprises: a binder resin, and a colorant having an average particle diameter of 0.005 to 0.30 &mgr;m, comprising: extender pigments, a gluing agent-coating layer formed on surface of the extender pigment, and an organic pigment coat formed onto the gluing agent-coating layer in an amount of 1 to 500 parts by weight based on 100 parts by weight of the extender pigments. The color toner exhibits not only a clear hue, but also excellent fluidity and dispersibility of colorants.

Abstract: Hematite particles aggregates as non-magnetic particles of the present invention are capable of forming a non-magnetic undercoat layer of a magnetic recording medium having a more excellent surface smoothness, which can exhibit not only an excellent dispersibility but also have an improving ability of a surface smoothness of a coating film produced therefrom by calendering treatment, a non-magnetic undercoat layer for magnetic recording medium which contains the hematite particles aggregates is exhibits a more excellent surface smoothness, and a magnetic recording medium having the non-magnetic undercoat layer, is exhibits a more excellent surface smoothness.

Abstract: Secondary agglomerates of magnetic metal particles containing primary particles having an average major axial diameter of 0.05 to 0.25 &mgr;m, said secondary agglomerates having an average particle diameter of 300 to 800 &mgr;m, an upper limit of particle diameter of 2,000 &mgr;m and a repose angle of 38 to 45°. The secondary agglomerates exhibit not only excellent handing property due to high storage efficiency, high transport efficiency and good flowability thereof, but also excellent kneading property when kneaded with various binder resins and organic solvents in a kneader, and excellent dilution-dispersibility when diluted with an additional amount of the organic solvent, upon the production of coating-type magnetic recording media, so as to more improve a surface smoothness and squareness of a magnetic coating film obtained therefrom, and a process for producing such secondary agglomerates of magnetic metal particles for magnetic recording.

Abstract: A magnetic recording medium including a non-magnetic base film; and a magnetic recording layer formed on the non-magnetic base film. The magnetic recording layer contains a filler, a binder resin and surface-modified magnetic particles having an average particle diameter of 0.01 to 0.7 &mgr;m and contains magnetic particles and a silane monomer coat formed on surface of the magnetic particle by a dry-mixing method.

Abstract: A sputter pallet loading and unloading device includes in one embodiment a spindle that rotates the pallet while an arm is engaged with the spring in the pallet to open and close the spring. In another embodiment, the spindle is located adjacent an air track that moves the disk substrate over a cushion of air to the loading area of the pallet. The air pressure under the disk substrate is increased to raise the disk substrate into the loading area. Once raised into the loading area, the spring is closed, e.g., by rotating the pallet in the opposite direction. The pallet and air-track are at a small angle to allow the substrate to slide into the correct position. The simplicity of operation leads to a reduced cost and a higher throughput for this device compared to a robotic loader.

Abstract: Magnetic acicular alloy particles containing iron as a main component according to the present invention, have an average major axial diameter of 0.05 to 0.2 &mgr;m, and pH values of water suspensions of said magnetic acicular alloy particles containing iron as a main component, which satisfies the formula: (pH value of water suspension treated by A method)−(pH value of water suspension treated by B method)<0 Such magnetic acicular alloy particles containing iron as a main component exhibit an excellent dispersibility in a vehicle, especially such a vehicle composed of a binder resin having a polar group such as —SO3M (wherein M is H, Na or K), —COOH or the like, and in which an orientation and a packing density in coating film are improved.

Abstract: An air track includes a concave top surface with a plurality of air outlets or a flat surface with a notch and a plurality of air outlets. The body of the air track includes at least one air filter that runs along the length of at least a portion of the body. The air filter divides the body into a first plenum and a second plenum. The air track also includes a hood covering at least a portion of the top surface. The air track further includes a stopper assembly that arrests the motion of a disk. The stopper assembly includes a disk detector that senses the presence of the disk on the air track.

Abstract: A silicon nitride self-lubricating layer forms the upper surface of a data storage device, such as a rotating disk or a non-rotating memory device, e.g., a credit card-type memory device using a memory strip. The silicon nitride self-lubricating layer can replace the carbon protective overcoat and liquid lubricant used in conventional data storage devices. The silicon nitride self-lubrication layer provides the desired lubrication and protection between the slider and the data storage device. The silicon nitride layer also will not evaporate under high temperatures found in an optical data storage system. In addition, a data storage device may include a plastic polymer layer over which an iron oxide material is deposited. The use of a plastic polymer layer and iron oxide recording layer is particularly advantageous because a low temperature deposition process can be used with the iron oxide material.

Abstract: A black colorant for ink-jet printing ink, has an average particle diameter of 0.001 to 0.15 &mgr;m, and comprises: extender pigments as core particles; a gluing agent-coating layer formed on at least a part or the surface of said core particles; and a black pigment coat uniformly formed on at least a part of said gluing agent-coating layer. The black colorant for ink-jet printing ink exhibits not only a high blackness and an excellent tinting strength, but also excellent dispersibility and light resistance in spite of fine particles.

Abstract: The present invention relates to a process for treating a dioxin-containing exhaust gas which can inhibit the generation of dioxin occurring either in the course of cooling of the exhaust gas between a downstream portion subsequent to a combustion chamber and a dust collector or due to a memory effect upon low-temperature combustion in flues or dust collector at the start-up or shut-down of intermittent operation-type solid waste incinerators, without large-scale incineration facilities or plant renovation and equipment investment, and a composite catalyst composition for inhibiting the generation of dioxin, comprising an iron compound, an acid gas neutralizing agent and optionally an activated carbon.

Abstract: A black composite iron oxide pigment of the present invention comprises composite iron oxide particles having an average particle size of 0.08 to 1.0 &mgr;m, comprising: as core particles iron oxide particles, a coating formed on surface of said iron oxide particle, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes, and an organic blue-based pigment coat formed on said coating comprising said organosilicon compound, in an amount of from 1 to 50 parts by weight based on 100 parts by weight of said iron oxide particles.

Abstract: Black magnetic toner comprising: a binder resin, and black magnetic composite particles comprising: magnetic iron oxide particles having an average particle diameter of 0.055 to 0.95 &mgr;m; a coating layer formed on the surface of said magnetic iron oxide particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, (2) polysiloxanes or modified polysiloxanes, and (3) fluoroalkyl organosilane compounds obtainable from fluoroalkylsilane compounds; and a carbon black coat formed on said coating layer comprising said organosilicon compound, in an amount of 1 to 25 parts by weight based on 100 parts by weight of said magnetic iron oxide particles. Such a black magnetic toner can be free from being deteriorated in electric resistance due to the existence of the carbon black coat, and as a result, is suitable as a high-resistance or insulated magnetic toner.

Abstract: Non-magnetic composite particles composed of non-magnetic core particles having an average particle size of 0.01 to 0.3 &mgr;m, and inorganic fine particles having an average particle size of 0.001 to 0.07 &mgr;m. The fine particles are present in an amount of 0.1 to 20% by weight based on the weight of the non-magnetic particles are on the surface of each non-magnetic particle, and are fixed or anchored on the surface of each non-magnetic particle through a silicon compound The non-magnetic composite particles have a high polishing effect and a high dispersibility, and are useful as a non-magnetic undercoat layer for a magnetic recording medium.

Abstract: Spindle-shaped magnetic metal particles containing iron as a main component of the present invention, have an average major axis diameter (L) of 0.05 to 0.15 &mgr;m; a coercive force of 111.4 to 143.2 kA/m; a Co content of from 0.5 to less than 5 atm % based on whole Fe; a crystallite size of from 150 to less than 170 Å; a ratio of Al to Co from 1.0:1 to less than 2.0:1; a specific surface area (S) represented by the formula: S≦−160×L+65; an oxidation stability (&Dgr;&sgr;s) of saturation magnetization of not more than 5.0%; and an ignition temperature of not less than 140° C. The spindle-shaped magnetic metal particles containing iron as a main component, exhibit an adequate coercive force, and are excellent in dispersibility, oxidation stability and coercive force distribution despite fine particles, especially notwithstanding the particles have an average major axis diameter as small as 0.05 to 0.15 &mgr;m.

Abstract: A colorant for ink-jet printing ink of the present invention, has an average particle diameter of 0.001 to 0.15 &mgr;m, and comprises: extender pigments as core particles; a gluing agent coating layer formed on at least a part of surface of said core particle; and an organic pigment coat uniformly formed on at least a part of said gluing agent coating layer. The colorant for ink-jet printing ink exhibits not only a high tinting strength and a clear hue, but also excellent dispersibility and light resistance in spite of fine particles.

Abstract: Soft-magnetic hexagonal ferrite composite particles composed of 100 parts by weight of soft-magnetic hexagonal ferrite particles containing a Z-type ferrite, Y-type ferrite or W-type ferrite as a main phase, 0.3 to 10 parts by weight of barium carbonate particles, strontium carbonate particles or their mixture and 0.1 to 5 parts by weight of silicon dioxide particles.