Abstract: An imprinting method which is capable of forming a concave/convex pattern in a short time without causing deformation or incompleteness of the pattern. In the imprinting method, a stamper-pressing step of pressing a stamper against a resin layer formed by applying a resin material to a surface of a substrate, in a state of the resin layer being heated to a predetermined temperature, and a stamper-removing step of removing the stamper from the resin layer while maintaining either of the state of the resin layer being heated and a state of the temperature of the heated resin layer being held, are performed in the mentioned order, whereby shapes of recesses/protrusions of the stamper are transferred to the resin layer to form a concave/convex pattern on the substrate.

Abstract: A magnetic recording medium including at least a disk substrate 1A, a magnetic recording layer 5 formed with a predetermined concavo-convex pattern on the disk substrate 1A, and a non-magnetic layer 6 filled into concave portions of the concavo-convex pattern, so as to have data track regions 20 and servo pattern regions 21. Due to the existence of concaves and convexes in the surface of each data track region 20, the foregoing problem is solved. On this occasion, arithmetical mean deviation of the assessed profile Ra of the surface of each data track region 20 is preferably not lower than 0.3 nm. The difference in surface level between each concave and each convex existing in the surface of the data track region 20 is preferably not larger than 6 nm.

Abstract: A mold having a pattern of a concavo-convex surface including protrusion and recess is prepared and the pattern is transferred to a resist layer formed on a substrate by an imprinting method. The side surface of a protrusion of the transferred resist pattern is then etched so that the protrusion has a width narrower than a width of the corresponding recess formed to the mold. This resist pattern forming method is preferably applicable to a magnetic recording medium manufacturing method and a magnetic head manufacturing method.

Abstract: The present invention relates to (1) A reagent for an immunoassay of a target substance existing in a free form and a bound form in a specimen, comprising a latex 1 which is immobilized with a monoclonal antibody 1 for the target substance, and a latex 2 which has a different mean particle size from the latex 1 and is immobilized with a monoclonal antibody 2 having a different recognition site for the target substance from the antibody 1, (2) An immunoassay method comprising reacting the target substance with the reagent of (1) and determining an amount of the substance based on the result of an agglutination reaction among the target substance, the latex1 and the latex2, and (3) A reagent kit comprising a reagent of (1) and a reagent containing an agglutination accelerator for an antigen-antibody reaction.

Abstract: A disk case in which the downsizing of a disk is enabled, maintaining the ease of handling in the same manner as the current 8-cm disk cartridge, and that can be mounted on the current 12-cm drive by using a simplified adapter is provided. The shape of the disk case that involves an 8-cm disk is not a square but almost a circle. Further, the opening width of the disk case is 39 mm or more. An arm for ejecting the disk is arranged at the disk case opening side.

Abstract: A convex/concave pattern-forming stamp which is capable of making recesses of a convex/concave pattern uniform in depth and preventing deformation and peeling of portions of the convex/concave pattern at the same time. The stamp has on a surface thereof an annular area formed with protrusions for forming a convex/concave pattern in a resin layer on a surface of a disk-shaped substrate by being pressed against the resin layer. Protrusions for dispersing a pressure applied to the resin layer when the stamp is pressed against the resin layer are formed in at least one of an outer area located radially outward of the annular area and an inner area located radially inward of the annular area.

Abstract: In a disk substrate imprinting operation, a disk substrate formed with a shape transfer layer is mounted on a mount table, a position of the disk substrate on the mount table is adjusted in a state of being supported at a taper portion of a position adjusting member which is disposed to be movable vertically with respect to the disk substrate, a position of a stamper disposed so as to oppose to the disk substrate is preliminarily adjusted with respect to the position adjusted disk substrate is preliminarily adjusted, and in this state, a fine pattern is shaped to the shape transfer layer of the disk substrate by the stamper.

Abstract: In order to obtain an optical transmitter module for converting an input electric signal to a light signal with fidelity and outputting it therefrom, a terminal resistor Rt and an optical modulator MD are connected in parallel within a package including a laser diode with a monolithically integrated optical modulator for obtaining the light signal according to the electric signal. One thereof is grounded and the other thereof is connected to a wire inductance (L1) and an impedance matching resistor Rd in series with this parallel connection. Further, a high frequency transmission line (micro-strip line) MSL for the transmission of the electric signal is connected to the other end of the impedance matching resistor Rd.

Abstract: Provided are a manufacturing method for a magnetic recording medium enabling efficient and reliable manufacturing of a magnetic recording medium with minimal surface roughness and good precision in recording and reading information, and a magnetic recording medium with a high degree of surface recording density and good precision in recording and reading information. The magnetic recording medium is constructed by forming a divided recording layer and the like onto a substantially flat base surface of a dummy, such that the base surface side of the dummy serves as a front surface, and a substrate is also attached, after which the dummy is removed.

Abstract: A photosolder resist composition of the invention is characterized by containing (A) a resin containing radical polymerization groups and carboxyl groups obtained by adding a cyclic ether group of a cyclic ether group-containing vinyl monomer to a carboxylic group of a radical copolymer containing at least isobornyl (meth) acrylate and a carboxyl group-containing vinyl monomer as monomer units; (B) an inorganic filler; and (C) a photocurable mixture of a polyfunctional acrylic monomer (c1), a cyclic ether group-containing compound (c2), and a photopolymerization initiator (c3).

Abstract: For achieving a transmission light source having different transmission properties or characteristics, i.e., the &agr; parameters, depending upon application thereof, in a light emission element of semiconductor EA modulator integrated type being constructed with a light emission portion for lasing with a single vertical mode and a plurality of EA modulators, wherein an absorption edge wavelength under the condition of applying no bias thereto, in the semiconductor multiple-quantum-well structure owned by the modulator which is near to an emission side of the light emission portion, is to be equal or longer than the absorption edge wavelength owned by the modulator positioned far from the emission side of the light emission portion.

Abstract: A photosolder resist composition is characterized by containing (A) a resin containing radical polymerization groups and carboxyl groups obtained by adding a cyclic ether group of a cyclic ether group-containing vinyl monomer to a carboxylic group of a radical copolymer containing at least a vinyl aromatic compound and a carboxyl group-containing vinyl monomer as monomer units; (B) an inorganic filler; (C) a photocurable mixture composed of a polyfunctional acrylic monomer (c1), a cyclic ether group-containing compound (c2) and a photopolymerization initiator (c3).

Abstract: A pellicle comprising a pellicle film, a pellicle frame supporting the pellicle film, and an adhesive resin layer provided on the surface of the pellicle frame on the side opposite to the surface supporting the pellicle film, wherein the adhesive resin layer is formed of a combination of a hard resin layer and a soft resin layer. The pellicle can be mounted on the mask and can be removed from the mask without giving damage to the mask, and does not spoil the flatness of the mask irrespective of when the mask surface is maintained in either the horizontal direction or the vertical direction.

Abstract: A pellicle comprises a pellicle frame, a pellicle film and at least two liners. The pellicle frame has one end face and the other end face and is provided at its central portion with an opening. The other end face of the pellicle frame is provided with an adhesion layer. The pellicle film is stretched over and attached to the one end face of the pellicle frame. The at least two liners are adhered on the adhesion layer. The at least two liners can be respectively peeled off from the adhesion layer, and when the at least two liners are respectively peeled off from the adhesion layer, a portion of the adhesion layer to which each of the liners was adhered is exposed.

Abstract: For achieving a transmission light source having different transmission properties or characteristics, i.e., the a parameters, depending upon application thereof, in a light emission element of semiconductor EA modulator integrated type being constructed with a light emission portion for lasing with a single vertical mode and a plurality of EA modulators, wherein an absorption edge wavelength under the condition of applying no bias thereto, in the semiconductor multiple-quantum-well structure owned by the modulator which is near to an emission side of the light emission portion, is to be equal or longer than the absorption edge wavelength owned by the modulator positioned far from the emission side of the light emission portion.

Abstract: There is provided a disk cartridge adaptable to an enlarged head by exposing an information recording disk extensively out of a cartridge case. In the disk cartridge, a cartridge case is divided on its plane into at least a first case portion and a second case portion, and the second case portion is arranged to be slidable relative to the first case portion. When the disk cartridge is not in use, the information recording disk is enabled to be covered by the first case portion and the second case portion by keeping the first case portion and the second case portion in a parallel state, and a disk freeing portion is so formed that, when the disk cartridge is in use, exposes parts of both inside face and outside face of the information recording disk are exposed from the cartridge case by moving the second case portion relative to the first case portion and overlapping the first case portion and the second case portion.

Abstract: A seat pad is provided with a lower pad member and a upper pad member that is attached to the lower pad member by an adhesive. A pair of projections is formed at the front portion of the seat pad. A concave is defined between the projections. The upper surface of the seat pad is inclined to be lower toward the front end of the seat pad when the seat pad is put on a seat of a chair. When a person sits on the seat pad, a pelvis is held in a proper position, which improves the flow of blood and the behavior of nerve.

Abstract: A light-and-shade inspection apparatus and method therefor include an image pick-up device for picking up an image of an object across a dimension (e.g., width) thereof to produce an image data, a projection operational portion for calculating a projection data by adding together a predetermined number of the image data, the image data being produced at each scan of the image pick-up device at a predetermined position along the width of the object, a background lightness operational portion for calculating, based on the projection data produced by the projection operational portion, a background lightness of the object across its width, and a difference operational portion for subtracting the background lightness produced by the background lightness operational portion from the image data produced by the image pick-up device, thereby substantially eliminating variations of the background lightness across the width of the object from the image data.

Abstract: A light-and-shade inspecting apparatus and method therefor, includes an image pick-up device for picking up an image of the object to output an image data, an integrated image calculating portion for dividing the image data outputted from the image pick-up device into a mesh pattern of meshes and then adding together the image data within each of the divided meshes to obtain an integrated image, a differentiated image calculating portion for performing a difference operation between each pair of meshes separated by a predetermined interval from each other with respect to their corresponding two integrated images obtained through the integrated image calculating portion, a defect detecting portion for comparing a value obtained through the differentiated image calculating portion with a predetermined value to detect as a defect portion which is partially different in luminance from the other portions on the object, an average value calculating portion for calculating an average value of the integrated image ob

Abstract: A pellicle comprises a pellicle frame, a pellicle film and at least two liners. The pellicle frame has one end face and the other end face and is provided at its central portion with an opening. The other end face of the pellicle frame is provided with an adhesion layer. The pellicle film is stretched over and attached to the one end face of the pellicle frame. The at least two liners are adhered on the adhesion layer. The at least two liners can be respectively peeled off from the adhesion layer, and when the at least two liners are respectively peeled off from the adhesion layer, a portion of the adhesion layer to which each of the liners was adhered is exposed.