Abstract: A light non-transmitive layer and resist are coated on a surface of a mask. By carrying out exposing, developing, and etching, a positive/negative reversed pattern is formed on the surface of the mask. A light non-transmitive layer and a resist are coated on a portion of the workpiece where the pattern is to be formed. Exposure is carried out by using the mask that can be changed by a connector. The pattern of the mask is transferred to the resist, and the resist is developed. After the resist is developed, a mask pattern is formed on a surface of the workpiece by etching.

Abstract: The present invention provides an animal cell expressing a gene coding a ligand-responsive transcription control factor and securely maintaining a DNA comprising in a molecule, the following genes (a) and (b): (a) a reporter gene connected downstream from a transcription control region, in which said transcription control region substantially consists of a recognition sequence of said ligand-responsive transcription control factor and a minimum promoter which can function in said cell; and (b) a selective marker gene which can function in said cell; provided that the following gene (c): (c) a reporter gene connected downstream from a promoter which transcription activity is unchanged by having said responsive transcription control factor contacted with a ligand of said ligand-responsive transcription control factor, said reporter gene (c) coding a protein which can be differentiated from the protein coded by said gene (a) is not present in said cell and the like.

Abstract: A dynamic pressure bearing manufacturing method, comprising the steps of forming a herringbone groove pattern on the outer peripheral surface of a cylindrical mask and a spiral groove pattern on the lower surface of the flange part thereof, inserting the mask in a dynamic pressure bearing and optical fibers into the mask, radiating light from an external light source to the mask through optical fibers to transfer the herringbone groove pattern onto the inner peripheral surface of the dynamic pressure bearing and, at the same time, radiating the light from the upper side of the flange part to transfer the spiral groove pattern onto the upper surface of the dynamic pressure bearing performing development, and forming a herringbone groove on the inner peripheral surface of the bearing by etching and a spiral groove on the upper surface thereof.

Abstract: An information storage apparatus includes: at least one information storage medium each of which is in a disk-like shape, rotates being fixed to a common rotating shaft and in which information is recorded; a head which accesses the information storage medium by approaching or touching the information storage medium; an arm which extends along a surface of the storage information medium, holds the head at an end of the arm, and swings around a pivot shaft disposed at a root of the arm; and a spoiler which rectifies airflow on the information storage medium and includes a metal airflow control plate and a resin bracket which holds the airflow control plate at a predetermined position along the surface of the information storage medium.

Abstract: A magnetic disc drive includes a head that is configured to record information in a recording medium or reproduce the information from the recording medium, a housing that houses the recording medium and the head, and a vibration damping mechanism that reduces a vibration of the housing, and includes a weight attached to the housing and a deformation reducer that reduces a deformation of the housing caused by the weight.

Abstract: An injection-molding mold die includes a cylinder and a diameter-enlarging member. The cylinder includes a hollow, an opening, and an external peripheral surface, and has an undercut-forming section formed on the external peripheral surface thereof, which forms a shape incapable of being drafted from the mold die in the direction of opening the same. The diameter-enlarging member enters the hollow through the opening so as to enlarge the external diameter of the cylinder and can relatively advance to or retreat from the hollow. The diameter-enlarging member lies in the hollow when the mold die is clamped and exits the hollow when the mold die is opened. The cylinder is made from a metal having a longitudinal elastic modulus greater than the value of a predetermined pressure, and whose external diameter enlarged by the insertion of the diameter-enlarging member is reduced when the diameter-enlarging member exits the hollow.

Abstract: A head actuator member supports a head slider at the tip end. A first fixing member is integrated with the enclosure at a position spaced from the head actuator member by a predetermined distance. A second fixing member firmly hold the folded section of a flexible printed circuit board against the first fixing member. The flexible printed circuit board is thus reliably prevented from lifting from the first or second fixing member. The first fixing member is firmly secured to the enclosure. The first fixing member is reliably prevented from shifting and shaking. Even if the head actuator member changes its attitude, the flexible printed circuit board can reliably be prevented from vibration. The head slider can thus be positioned right above a target recording track on the magnetic recording disk with a higher accuracy. Reading and writing of magnetic bit data can be realized with a high accuracy.

Abstract: An injection-molding mold die includes a cylinder and a diameter-enlarging member. The cylinder includes a hollow, an opening, and an external peripheral surface, and has an undercut-forming section formed on the external peripheral surface thereof, which forms a shape incapable of being drafted from the mold die in the direction of opening the same. The diameter-enlarging member enters the hollow through the opening so as to enlarge the external diameter of the cylinder and can relatively advance to or retreat from the hollow. The diameter-enlarging member lies in the hollow when the mold die is clamped and exits the hollow when the mold die is opened. The cylinder is made from a metal having a longitudinal elastic modulus greater than the value of a predetermined pressure, and whose external diameter enlarged by the insertion of the diameter-enlarging member is reduced when the diameter-enlarging member exits the hollow.

Abstract: A spacer is utilized in a recording disk drive, for example. The spacer is made of a mixed material at least including first inorganic powder having the particle size in a range from 10 ?m to 100 ?m, second inorganic powder having the particle size in a range from 0.01 ?m to 1 ?m, and resin material. The resin material is contained in the mixed material at an amount equal to or smaller than 40 volume % to the total amount of the mixed material. The spacer can be formed by molding. The first and second inorganic powder can closely be filled in the resin material. The spacer is thus allowed to enjoy an improved Young's modulus. If the spacer is interposed between recording disks, for example, the spacer serves to sufficiently suppress deformation of the recording disks.

Abstract: A light non-transmitive layer and resist are coated on a surface of a mask. By carrying out exposing, developing, and etching, a positive/negative reversed pattern is formed on the surface of the mask. A light non-transmitive layer and a resist are coated on a portion of the workpiece where the pattern is to be formed. Exposure is carried out by using the mask that can be changed by a connector. The pattern of the mask is transferred to the resist, and the resist is developed. After the resist is developed, a mask pattern is formed on a surface of the workpiece by etching.

Abstract: A dynamic pressure bearing manufacturing method, comprising the steps of forming a herringbone groove pattern on the outer peripheral surface of a cylindrical mask and a spiral groove pattern on the lower surface of the flange part thereof, inserting the mask in a dynamic pressure bearing and optical fibers into the mask, radiating light from an external light source to the mask through optical fibers to transfer the herringbone groove pattern onto the inner peripheral surface of the dynamic pressure bearing and, at the same time, radiating the light from the upper side of the flange part to transfer the spiral groove pattern onto the upper surface of the dynamic pressure bearing performing development, and forming a herringbone groove on the inner peripheral surface of the bearing by etching and a spiral groove on the upper surface thereof.

Abstract: Triphenylmethane derivatives represented by the general formula: 1

Abstract: A cooling system for electronic circuit components mounted on a printed circuit board, includes a cooling plate having a coolant passage, thermal contacts arranged on the cooling plate to be in resilient contact with the surfaces of the electronic components, which are cooled via the thermal contacts by liquid coolant flowing through the coolant passage. The cooling plate has one or more shortcut passages, the cross-sectional area of which is smaller than that of the coolant passage, to mutually connect predetermined portions of the coolant passage. The liquid coolant can be discharged from the cooling plate via the shortcut passage.