Abstract: Provided is a novel phosphorus-containing compound represented by general formula (I). The compound has reactivity with a glycidyl group and is therefore capable of providing a curing epoxy resin composition that is expected to achieve flame retardation and reduction of dielectric constant. wherein m is a number of 1 to 10; R1, R2, R3, and R4 are each hydrogen, alkyl, or aryl; R5 is alkyl, alkanediyl, alkanetriyl, alkanetetrayl, or an aromatic group; X is oxygen or sulfur; Y is oxygen, sulfur, or ?NR?; and R? is hydrogen, alkyl, or aryl.

Abstract: The purpose of the present invention is to provide a phosphorus-containing compound having reactivity with a glycidyl group, specifically a phosphorus-containing compound represented by general formula (I). (In the formula, m represents a numerical value of 1 to 10; R1 and R2 independently represent a hydrogen atom, an alkyl group or an aryl group; R3 represents an alkyl group, an alkanediyl group, an alkanetriyl group, an alkanetetrayl group or an aromatic group; X represents an oxygen atom or a sulfur atom; Y represents an oxygen atom, a sulfur atom or —NR4—; and R4 represents a hydrogen atom, an alkyl group or an aryl group.

Abstract: A method of manufacturing a needle-equipped outer tube includes a preheating step comprising heating a distal end connecting section to a temperature at or below a softening point of a material forming an outer tube member with a joint member inserted in a distal end connecting section of the outer tube member, and with a needle being inserted or inserted and fixed in the needle insertion hole; and a joint member welding step, performed after the preheating step, comprising thermally welding the joint member to the distal end connecting section of the outer tube member with a distal end portion of the joint member pressed toward the proximal end of the joint member by a pushing member with a pressing force in a range of 4 N to 30 N.

Abstract: A method for manufacturing a needle-equipped outer tube includes providing a needle; providing a joint member having a needle insertion hole into which the needle is insertable; providing an outer tube comprising a connection section at a first axial end portion of the outer tube; pressing the joint member, with the needle located in the needle insertion hole, toward the connection section, such that the joint member engages with the connection section of the outer tube; and thermally welding the needle and the joint member, as well as the joint member and the connection section, such that the needle is joined to the joint member, and the joint member is joined to the connection section of the outer tube.

Abstract: This syringe with needle is provided with a needle tube having a needle tip capable of puncturing a living body, and a syringe by insert molding formed integrally with the needle tube. The syringe includes: a main body which is filled with a drug; and a securing section which is formed to be continuous with the main body. The securing section secures the needle tube in a state that the needle tip of the needle tube is protruded. The securing section of the syringe includes a holding hole in which a chuck member for supporting and securing a circumferential surface of the needle tube during the insert molding is inserted and passed.

Abstract: An ink jet recording head (100) comprising edge shooter type head units (20) each having a head chip provided with a nozzle ejection surface, a positioning plate (41) for arranging the head units (20) in parallel to each other, inclined against a line arranging direction. The positioning plate (41) arranges the head units (20) in parallel to each other, inclined against the line arranging direction, and the angle of the inclination is set so that a nozzle interval, in the line arranging direction, of two nozzles (21a) corresponds to a predetermined resolution, the two nozzles being adjacent to each other on a straight line on the nozzle ejection surface.

Abstract: An optical pickup apparatus for reading and recording information on recording media includes a semiconductor laser, a collimating lens, a half mirror, a reflecting mirror, and an objective lens. Further included therein are a super-resolution cutoff filter and an aperture control filter, one of which is appropriately selected and set right before the objective lens by a filter switching-over device. When reading the DVD, the super-resolution cutoff filter is set at the optical path, whereas when reading the CD, the aperture control filter is set thereat. The filter switching device is arranged separately from an actuator driving system having the objective lens integrally structured therewith.

Abstract: The present invention provides an optical information recording device and reproduction device which enable accurate recording and reproduction of information. The present invention comprises a light source 103, a deflection element 109 for changing the traveling direction of light emitted from the light source, a means 113 for generating information light holding information using light of which the traveling direction has been changed by the deflection element, a means 113 for generating recording reference light using light of which the traveling direction has been changed by the deflection element, an objective lens 127 for irradiating information light and recording reference light to the moving recording medium 151, and a control means 163 for controlling the deflection element and enabling the irradiation position of the objective lens 127 to the recording medium 151 to follow the movement of the recording medium 151.

Abstract: A liquid crystal element is provided as a polarization plane rotating device between a laser beam source and a beam splitter. Light emitted from the laser beam source passes through the liquid crystal element and the beam splitter, and is converted into parallel light by a collimating lens. The collimated light is incident on a first light-selection device, is reflected at a flat first reflecting surface or a concave second reflecting surface, and is then incident on a super-resolution cut-off filter as a second light-selection device. The light having passed through the second light-selection device is incident on an objective lens, and is converged onto a recording surface. The selection of the reflecting surface of the first light-selection device is determined based on an operation mode of the liquid crystal element.

Abstract: A laser beam emitted from a laser diode and having a wavelength of 780 nm is S-polarized. A polarization plane rotating means (?/4 phase plate) is disposed between a super-resolution cut-off filter comprising a polarizing filter film and an objective lens. When reading on DVD, the objective lens, the polarization plane rotating means and the super-resolution cut-off filter in combination are set to the optical path. The S-polarized laser beam is focused to a micro spot diameter by super-resolution effects by the super-resolution cut-off filter together with the objective lens. Also, the S-polarized laser beam reflected at a disk and traveling backward along the incoming optical path is converted into a P-polarized laser beam while passing backward through the polarization plane rotating means. The P-polarized laser beam passes through the super-resolution cut-off filter without loss is received by a photo-detector.

Abstract: An information reading and recording apparatus includes a super-resolution cut-off filter having an annular metal reflection film at its center portion and disposed immediately before one of two objective lenses with a higher NA. When reading DVD, the one objective lens with a higher NA with the super-resolution cut-off filter disposed therebefore is positioned at the optical path. When reading CD, the other objective lens with a lower NA is positioned at the optical path. The laser beam reflected by a disk follows backward the incoming optical path to pass through a half mirror, and is received by a photo-detector to be converted into an electrical signal.

Abstract: An optical information reading apparatus includes a semiconductor laser, a beam splitter, a collimating lens, a super-resolution cut-off filter, an objective lens having a high numerical aperture, and a photodetector. The super-resolution cut-off filter is disposed immediately in front of the incident side of the objective lens. The photodetector is a well-known eight-division photodetector with a signal processing circuit, reads recorded information and also outputs tracking and focusing control signals to a control circuit. The laser beam is separated into a 0-th order laser beam and ± primary laser beams, which are made incident on the objective lens, pass therethrough, and are made incident on the recording surface of a disk. The 0-th order laser beam is used to read information and to control focussing while the ± primary laser beams are used to control tracking.

Abstract: To record information, a recording/reproducing optical system in an optical head irradiates a recording medium with information light and reference light for recording so that two-dimensional image information is recorded on the recording medium by means of interference between the information light and the reference light for recording. To reproduce information, the recording/reproducing optical system irradiates the recording medium with reference light for reproduction, and collects and detects reproduction light occurring from the recording medium. An optical information recording/reproducing apparatus comprises a tilt detector and an image deviation correction circuit. The tilt detector detects a tilt of the recording medium with respect to a predetermined reference position.

Abstract: In an optical pickup device in which the response of track follow-up control is improved, a polarizing beam splitter (PBS) combines information light and reference light, and the combined light is made incident on a recording disk via an optical rotary plate divided into two parts, a tracking galvano-mirror, relay lenses, a follow-up galvano-mirror and an objective lens. The tracking galvano-mirror can scan the combined light in a radial direction of the recording disk, and the follow-up galvano-mirror can scan the combined light in a track direction of the recording disk. The objective lens can be moved in opposite directions toward and away from the recording disk by a direct driving type of actuator.

Abstract: An information reading and recording apparatus in which recording media having respective recording densities different front each other, such as DVD, CD, CD-R/RW and the like, can be compatibly read and recorded only with a low-cost laser diode for low recording density. A laser beam from the laser diode is passed through a collimator lens via a half mirror, and there is provided a reflecting mirror for introducing the laser beam to one of two objective lenses, from which the laser beam is emitted towards the disk. One of the objective lenses is a lens having a high numerical aperture and the other one is a lens having a low numerical aperture. A super-resolution cut-off filter is disposed immediately before the objective lens having a high numerical aperture so that the objective lens and the super-resolution cut-off filter are placed in the optical path on reading DVD. On reading CD, the other lens is placed in the optical path.

Abstract: A cartridge for storing a holographic recording medium designed to allow a user to check whether a holographic recording medium is contained within the cartridge. The cartridge includes a disc tray on which a recording medium may be mounted and a housing that is capable of accommodating the disc tray and wherein a side surface of the housing may be opened. The housing is constructed to prevent the passage into its interior of light to which the recording medium is sensitive (dead band color). The housing, however, includes at least a portion that allows the passage into its interior of light to which the recording medium is not sensitive (e.g., orange through red colors), to allow the cartridge to be visually checked to determine whether a recording medium is contained within it. To further prevent the passage of any damaging light into the cartridge's interior, an elastic (e.g.

Abstract: An optical information recording device for recording information utilizing holography comprises a recording medium moving means for moving a recording medium, a follow-up control circuit for controlling an irradiation position, and a signal converting means for obtaining a reproduction signal from an address servo-control area including a light source for radiating an information beam and a reference beam onto the recording medium. The follow-up control circuit is composed of a binary-coding means for binary-coding the reproduction signal and a follow-up signal circuit, and detects the travel amount of the irradiation position moving means and generates, according to the travel amount detected and for a specific time during which the irradiation position of the information beam and the reference beam follows, an irradiation position control signal for controlling an irradiation position moving in one information recording area through an output terminal of a gain control amplifier.

Abstract: A ticket issuing and examining system comprises a ticket issuing management center, an automatic gate apparatus, and a ticket issuing apparatus. The ticket issuing management center receives an ID code of a user and a ticket data desired to purchase and transmitted from the user who has an ID recording medium recording an ID code thereon through a communication line and stores the received ID code and the ticket data in a memory by correlating them. The automatic gate apparatus reads an ID code from an ID recording medium and based on this read ID code, judges the entry of a user for approval or disapproval, and when the entry is judged to be approved, approves the entry of a user. Further, the ticket issuing management center receives an ID code transmitted from the automatic gate apparatus and based on this received ID code, reads out ticket data from a memory, and transmits the ticket data and the ID code to the ticket issuing apparatus.

Abstract: A laser beam emitted from a laser diode and having a wavelength of 780 nm is S-polarized. A polarization plane rotating means (&lgr;/4 phase plate) is disposed between a super-resolution cut-off filter comprising a polarizing filter film and an objective lens. When reading on DVD, the objective lens, the polarization plane rotating means and the super-resolution cut-off filter in combination are set to the optical path. The S-polarized laser beam is focused to a micro spot diameter by super-resolution effects by the super-resolution cut-off filter together with the objective lens. Also, the S-polarized laser beam reflected at a disk and traveling backward along the incoming optical path is converted into a P-polarized laser beam while passing backward through the polarization plane rotating means. The P-polarized laser beam passes through the super-resolution cut-off filter without loss is received by a photo-detector.

Abstract: An optical pickup apparatus for reading and recording information on recording media includes a semiconductor laser, a collimating lens, a half mirror, a reflecting mirror, and an objective lens. Further included therein are a super-resolution cutoff filter and an aperture control filter, one of which is appropriately selected and set right before the objective lens by a filter switching-over device. When reading the DVD, the super-resolution cutoff filter is set at the optical path, whereas when reading the CD, the aperture control filter is set thereat. The filter switching device is arranged separately from an actuator driving system having the objective lens integrally structured therewith.