摘要:
The present invention provides a novel soft magnetic material superior in corrosion resistance which contains (a) a ferromagnetic metal and (b) a carbide of a ferromagnetic metal and/or a silicide of a ferromagnetic metal with at least one of (c) an amorphous carbon and/or an amorphous silicon and (d) a hydrocarbon polymer and/or a silicone polymer and which contains carbon atoms in an amount of 15 atomic % or less, preferably 9-15 atomic %, preferably prepared by the simultaneous vapor deposition of a ferromagnetic metal and a polymer.
摘要:
A magnetic recording medium comprising a non-magnetic substrate, a soft magnetic layer formed thereon, and a perpendicularly magnetizable layer formed on the soft magnetic layer, where at least the soft magnetic layer is a vapor deposited mixture layer composed of an organic material and a ferromagnetic material, has distinguished flexibility and durability.
摘要:
A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer composed of a ferromagnetic material having a face-centered cubic structure and at least one of a carbon, silicon, a hydrocarbon compound and an organosilicone compound, provided on the non-magnetic substrate, has a high coercive force, a good head running property and a high durability.
摘要:
A camera module includes a mount for holding a lens directly or indirectly, a cover plate glass with transparency fixed to the mount. A solid-state imaging device is mounted on the cover plate glass. The cover plate contacts a plurality of ribs formed in the mount, and the mount and the cover plate are positioned.
摘要:
An object of the present invention is to provide a film-surface light-incident type magneto-optical recording medium which is used by means of an objective lens having a large NA value and is excellent in productivity and yield, and a magneto-optical recording apparatus. According to the present invention, there is provided a magneto-optical recording medium for conducting recording or reading-out from the film surface side of the recording medium by traveling of a flying head incorporated with an objective lens having a numerical aperture (NA) of not more than 0.95 and not less than 0.8, wherein at least a reflective film, a recording layer, a transparent dielectric layer, a transparent resin layer and a lubricant layer are laminated on a substrate in that order.
摘要:
A cavity surface-forming plate of a mold for injection-molding a plastic substrate is coarsely polished, and then a surface for defining a cavity is applied with electroless Ni-P plating. The surface of the plating is polished with abrasive grains to obtain surface roughness of Ra.ltoreq.2.0 nm and Rmax.ltoreq.22 nm. The plastic substrate molded with the mold has smoothness equivalent to the polished plating surface. A concave-convex pattern for forming pits may be formed on the cavity surface. A magnetic disk or an optical disk provided with the substrate makes it possible to realize the near contact system for a magnetic or magneto-optical head. Thus, it is possible to realize high density recording.
摘要:
A camera module includes a mount for holding a lens directly or indirectly, a cover plate glass with transparency fixed to the mount. A solid-state imaging device is mounted on the cover plate glass. The cover plate contacts a plurality of ribs formed in the mount, and the mount and the cover plate are positioned.
摘要:
An optical disk 100 is provided with a hub 3 at the central portion of a substratel. A relationship Y/X≧0.015, preferably Y/X≧0.05 is satisfied where X is the projected area of the substrate 1 and Y is a contact area between the hub 3 and the substrate 1. As result, no slippage occurs between the hub 3 and the substrate 1 even when they are rotated at high speed than conventional. With this higher rotational speed, the data transfer rate is improved, and irregular rotation and the camming are suppressed, thereby reducing tracking errors and write/read errors.
摘要:
A magneto-optical recording medium comprises, on a substrate, a reflective layer, a first dielectric layer, a recording layer, and a second dielectric layer successively in this order, for being irradiated with a recording or reproducing light beam coming from a side of the second dielectric layer. A diamond-like carbon layer as a self-lubricating layer is formed on the second dielectric layer. An optical head comprises a floating type slider installed with a solid immersion lens. A protective film having a self-lubricating property may be also formed on a bottom surface of the slider opposing to the optical recording medium. Even when the floating position of the optical head is varied, and the optical head contacts with the surface of the optical recording medium, then the sliding scratch scarcely occurs, because the optical head smoothly glides on the recording medium surface. A lubricating layer may be further formed on the self-lubricating layer.
摘要:
The present invention provides a magnetic recording medium with distinguished SNR and mechanical characteristics, which comprises an underlayer, a ferromagnetic thin film metallic layer and a protective film layer successively and continuously laminated on a non-magnetic resin substrate, where (A) at least one layer selected from the group consisting of an Si layer, an Si.sub.w N.sub.x C.sub.y O.sub.z layer and an Al.sub.w N.sub.x C.sub.y O.sub.z layer and (B) at least one layer selected from the group consisting of silicides, nitrides, oxides or their mixtures of Ti, Ta, Mo, V, Zr and their alloys are laminated on the non-magnetic resin substrate in the order of (A) and (B) or (i) a layer composed of at least one material selected from the group consisting of Ti, Ta, Mo, V, Zr, Nb and their alloys, (ii) at least one layer selected from the group consisting of an Si layer, an Si.sub.w N.sub.x C.sub.y O.sub.z layer and an Al.sub.w N.sub.x C.sub.y O.sub.z layer (where w+x+y+z=100 at. %, w.gtoreq.30 at. %, 0 .ltoreq.z.ltoreq.50 at. % and x+y.gtoreq.20 at. %), and (iii) a layer composed of at least one material selected from the group consisting of Ti, Ta, Mo, V, Zr and their alloys are laminated on the non-magnetic resin substrate in the order of (i), (ii) and (iii), between the non-magnetic resin substrate and the underlayer.
摘要翻译:本发明提供了具有卓越的SNR和机械特性的磁记录介质,其包括在非磁性树脂基板上连续层压的底层,铁磁薄膜金属层和保护膜层,其中(A)至少一个 选自Si层,SiwNxCyOz层和AlwNxCyOz层的层,以及(B)选自由Ti,Ta,Mo,V,Zr的硅化物,氮化物,氧化物或它们的混合物组成的组中的至少一个层 并且以(A)和(B)的顺序将它们的合金层叠在非磁性树脂基板上,或者(i)由选自Ti,Ta,Mo,V,Zr中的至少一种材料构成的层 ,Nb及其合金,(ii)至少一层选自Si层,SiwNxCyOz层和AlwNxCyOz层(其中w + x + y + z = 100原子%,w> / = 30 在%,0≤z≤50at。%和x + y> / = 20 at。%),和(iii)至少由 在非磁性树脂基板上以(i),(ii)和(iii)的顺序将非磁性材料选自Ti,Ta,Mo,V,Zr及其合金中的一种材料, 树脂基材和底层。