摘要:
Magnetic powder at least a part of particles of which have surface-adjacent layers comprising an aluminium-containing oxide of the corundum structure has high hardness so that a magnetic recording medium comprising a magnetic layer containing such magnetic powder has improved durability.
摘要:
A magnetic disc comprising a non-magnetic substrate, an undercoat coated on the surfaces of the substrate and a magnetic layer containing magnetic powder dispersed in a binder coated on the undercoat, characterized in that the undercoat has a thickness of from 0.5 to 10.0 .mu.m and such a porosity that a lubricant is contained therein in an amount of from 30 to 200 mg/cm.sup.3, which provides good surface lubricity and improved durability.
摘要翻译:一种磁盘,包括非磁性基底,涂覆在基底表面上的底涂层和含有分散在涂覆在底涂层上的粘合剂中的磁性粉末的磁性层,其特征在于底涂层的厚度为0.5至10.0μm 以及其中含有30至200mg / cm 3的润滑剂的孔隙率,其提供良好的表面润滑性和改善的耐久性。
摘要:
It is an object of the present invention to provide a bisbenzoxazinone compound which does not substantially contain an alkali metal salt, has high purity and provides a resin composition having excellent resistance to hydrolysis when it is contained in a resin, a production method thereof, and a resin composition comprising the compound.The present invention is a bisbenzoxazinone compound represented by the following formula (4): (R1 and R2 are each independently a hydrogen atom, hydroxyl group, alkyl group having 1 to 3 carbon atoms, or the like), and has (i) a purity of 98% or more, (ii) a content of a compound represented by the following formula (7) of less than 0.15 wt %: (iii) a maximum peak in the measurement of the light reflectance at a visible range of its powder at 380 to 480 nm and a maximum light reflectance of 100 to 120%, (iv) a metal sodium content of less than 50 ppm and (v) a YI value of −10 to 10.
摘要:
A light-emitting device includes a substrate mounted with a light-emitting element, and a frame disposed on the substrate. The frame includes a first frame portion disposed on the substrate and surrounding the light-emitting element, and having an inner wall surface substantially perpendicular to an upper surface of the substrate, an upper end of the inner wall surface being positioned at a level higher than that of an upper surface of the light-emitting element, and a second frame portion surrounding the inner wall surface of the first frame portion when viewed in a plan view, and having an inner periphery which is so shaped as to extend at an outward incline from a lower end of the inner periphery to an upper thereof. The light-emitting device includes a wavelength converter supported on the frame and opposed to the substrate with a gap.
摘要:
An exposure apparatus 1 comprises a collecting mirror 104 configured to collect emitted light from plasma 101, an illumination optical system which includes illumination system mirrors 201 to 204 and is configured to illuminate a reticle 301 light collected by the collecting mirror 104 using the second reflective optical element 201 to 204, and a projection optical system configured to project a pattern of the reticle 301 onto a wafer 308. At a predetermined temperature, a first wavelength where a reflectance of light entering the collecting mirror 104 or the illumination system mirrors 201 to 204 at a predetermined angle is peaked is shorter than a second wavelength where a reflectance of light in the projection optical system is peaked.
摘要:
This invention generally relates to an exposure apparatus and an exposure method using EUV light. In one preferred form of the present invention, the exposure apparatus is arranged to expose a substrate to a pattern of an original by use of extreme ultraviolet light, and it includes a blaze type diffraction grating disposed so that light from a plasma light source is incident thereon, and an optical system for directing extreme ultraviolet light from the blaze type diffraction grating to at least one of the original and the substrate.
摘要:
Disclosed are a mirror unit and a method of producing the same. In one preferred embodiment, the mirror unit includes a mirror with a multilayered film formed on a substrate, the multilayered film having two materials periodically laminated in layers on the substrate, and a substrate deforming device for producing deformation of a shape of the substrate of the mirror, wherein, in the multilayered film, the number of laminated layers in a predetermined region of the substrate differs from that in another region of the substrate. A mirror unit producing method according to another preferred embodiment includes forming a multilayered film on a substrate, the multilayered film having two materials periodically laminated in layers on the substrate, providing substrate deforming means in association with the substrate, the deforming means having a function for producing deformation of the shape of the substrate, and partially removing the multilayered film.
摘要:
This invention relates to an anti-dementia agent which uses a BEC 1 potassium channel inhibitor as the active ingredient.It was proved that the BEC 1 potassium channel inhibitor has an action to improve learning disorder and is useful as a preventive or therapeutic agent for diseases, preferably dementia, in which the BEC 1 potassium channel is considered to be concerned.Illustratively, it was confirmed by an in vivo test that the BEC 1 potassium channel inhibitor has an action to improve learning disorder.Also, it was found that a compound having 2,4,6-triamino-1,3,5-triazine has a BEC 1 potassium channel inhibitory action.
摘要:
A lighting apparatus includes a substrate, a plurality of light-emitting chips and a light-emitting member. The substrate has a layer including a base material and a medium. The base material is formed of an inorganic material and includes a plurality of cells. The medium is provided in the cells and has a refractive index lower than that of the inorganic material. The light-emitting chips are made of a semiconductor material and mounted on the substrate. The light-emitting member includes a fluorescent material and is provided above the light-emitting chips.
摘要:
An active carbon produced from an infusible carbonaceous material as a raw material, which active carbon when used for prevention of automobile fuel evaporation, etc., would not cause any trouble attributed to dust generation, exhibiting reduced pressure loss; and a process for producing the same. There is provided a spherical active carbon produced from an infusible solid carbon material as a raw material, wherein providing that x represents an average particle diameter (mm) and y an MS hardness (%), when x is in the range of 0.5 to 20, y is ≧100×(1-0.8×1.45(0.3-x)). This spherical active carbon can be produced by a process comprising mixing a carbon material with a carbonizable binder; extruding the mixture into a strand form; carrying out rolling granulation so as to obtain a spherical form; rendering the same infusible under appropriate conditions corresponding to the particle size; and performing carbonization and thereafter activation under conditions appropriately restricting the contact with activation gas.