baber/WOPTO huggingface dataset:
Patent JP-H05224252-A (JP)
Title: Suppressing circuit for four-light-wave mixed light
Inventor: INOUE YASUSHI
IPC: H04B10/2563
Filed: 1992-02-14
Abstract: PURPOSE:To provide the suppressing circuit for four-light-wave mixed light which can suppress the four-light-wave mixed light in an optical fiber without increasing frequency intervals nor reducing input light power. CONSTITUTION:This circuit is equipped with a Mach-Zehnder type optical multiplxer demultiplexer 7 which demultiplexes the input signal light into plural signal light beams, a Mach-Zehnder type optical multiplexer demultiplexer 7 which multiplexes the demultiplexed signal light beams, and an optical length adjustment device 9 which adjusts the optical length of the optical path between those Mach-Zehnder type optical multiplexer demultiplexer 7 and Mach-Zehnder type optical multiplexer demultiplexer 8; and those Mach-Zehnder type optical multiplexer demultiplexers 7 and 8 are connected by a delay fiber which is longer than the coherence length of the input signal light.
Patent JP-H03231780-A (JP)
Title: Developing device
Inventor: KOGA YOSHIRO
IPC: G03G15/09
Filed: 1990-02-07
Abstract: PURPOSE:To eliminate the need for a highly accurate expensive developing sleeve by using a developer which is conductive and a developing roller which is a magnetic roller magnetized to plural poles, and carrying the developer on the surface of the magnetic roller. CONSTITUTION:As for the developing roller 9, the magnetic circuit is constituted of the cylindrical magnetic roller 10 magnetized to the plural poles on its outer periphery, and a soft-magnetic cylindrical yoke 11. A magnetic developer 8 is held directly on the magnetic roller 10 by the leakage flux on the outer periphery thereof. While the developer 8 is controlled to be a preferable quantity by a blade 12, the developing roller 9 is rotated, thereby carrying the developer 8. When the developer 8 is carried to a developing gap part, a developing electric field is formed by the potential contrast of a latent image carrier 1 and a developing bias impressing means 13. Electric charges are injected to the developer 8 of the leading edge of a magnetic brush responding with the developing electric field, and the charged developer 8 is stuck to electrostatic latent images to charge the capacitance of a photosensitive layer 3, whereby these electrostatic latent images are developed. Thus, the need for the developing sleeve is eliminated.
Patent JP-S57145744-A (JP)
Title: Paper feeder
Inventor: FUKAZAWA YUKIHIKO
IPC: B65H3/52
Filed: 1981-02-27
Abstract: PURPOSE:To enable to feed sheets of paper one by one securely by a method wherein a reversely rotating force given to a paper pressing roller is set to be larger than the frictional force exerted between two sheets of paper located between a paper feeding roller and the pressing roller. CONSTITUTION:A back tension roller 8 is bound on a rotary shaft 22 by a force larger than the frictional force between two sheets A, A of paper. Therefore, the reversely rotating force given to the paper pressing roller 7 is larger than the frictional force between the sheets A, A. On the other hand, since the second sheet A is fed by the frictional force between the sheets A, A, the rotating force imparted to the roller 7 in the paper feed direction at that time is smaller than the reversely rotating force given to the back tension roller 8. Accordingly, the second sheet A is pushed back in the direction opposite to the delivering direction by setting the reversely rotating force for the pressing roller 7 to be larger than the frictional force of the second sheet A, so that the sheets of paper can be securely fed one by one.
Patent JP-H04244782-A (JP)
Title: Controller for circulation current type cycloconverter
Inventor: ENDO KAZUYA
IPC: G05F1/45
Filed: 1991-01-28
Abstract: PURPOSE:To facilitate digital control through a microcomputer by determining a compensation amount, corresponding to the voltage drop across a DC reactor, for eliminating interference with a load current, which functions as a disturbance in a circulation current control system, without requiring differentiation of the load current. CONSTITUTION:An angular frequency omega, a peak value Ia* and a command value i L* of load current are fed to a compensation circuit 22'. They are employed, together with the inductance value of a DC reactor 1 and the like, in the determination of a compensation amount e* without requiring differentiation of load current. Thus determined compensation amount  e* is then added to a reactor voltage command value Vo'* to obtain a corrected voltage command value Vo*.
Patent JP-H10223551-A (JP)
Title: Method for manufacturing soi substrate
Inventor: OGURA ATSUSHI
IPC: H01L21/762
Filed: 1997-02-12
Abstract: PROBLEM TO BE SOLVED: To reduce the crystal defect of an SIMOX substrate by injecting a specific amount of oxygen ion to an Si substrate, then performing a low- temperature heat treatment under specific conditions, and then performing a high-temperature treatment under specific conditions. SOLUTION: An oxygen ion with a dosage of 3×10<17> /cm<3> or less is implanted to an Si substrate 10 and then the Si substrate 10 is subjected to a low- temperature heat treatment, for example, at 1,250 deg.C or less, at least for 40 minutes, for example, at 1,250 deg.C for one hour in nitrogen atmosphere. At this stage, a high-density oxide island deposition nucleus 20 is formed. Then, high- temperature heat treatment is performed in Ar atmosphere containing, for example, 0.5% oxygen at 1,300 deg.C or higher, for example 1,350 deg.C for five hours, thus forming a continuous oxide film 40. In this case, a high-density oxide island deposition nucleus is generated due to a low-temperature heat treatment and oxide islands, where oxygen gathers due to a high-temperature heat treatment and grows, are incorporated one another and become a continuous oxide film 40.
Patent JP-H11234488-A (JP)
Title: Scan line pitch measurement method
Inventor: IMAGAWA SUSUMU
IPC: H04N1/113
Filed: 1998-02-10
Abstract: PROBLEM TO BE SOLVED: To measure a scan line pitch accurately by outputting an image based on a plurality of scanning lines on a reflected face for each specific pitch and measuring the scan line pitch based on a contrast difference in the subscan direction orthogonal to the scan line. SOLUTION: In the case of deflecting and scanning a beam light emitted from a laser light source on an image medium by a rotating polygon mirror for the measurement of scan line pitches, an image is outputted based on a plurality of scan lines on a reflecting face for each of 5 pitches when the number N of reflection faces of the rotating polygon mirror is selected to be 6 (1st face to 6th face). Since the scan lines 1-6 to be recognized by a contrast difference of an image are obtained for each of (N-1) pitches (pitches by five scan lines), the scan line pitch is measured by clearly distinguishing density distribution of the scan lines 1-6.  Furthermore, fluctuations in the scan line pitches due to the inclination of each reflection face of the rotating polygon mirror is easily detected based on the density distribution of a plurality of the scan lines 1-6 for each of the (N-1) pitches in the subscan direction.
Patent JP-S56125637-A (JP)
Title: Photoluminescence dosimeter
Inventor: OOMORI TAKAO
IPC: G01N21/64
Filed: 1980-03-07
Abstract: PURPOSE:To improve measurement accuracy and reliability by simultaneously irradiating ultraviolet rays under the same conditions to a standard fluorescence emitting body of known emission efficiency and a fluorescence emitting body to be measured and integrating the fluorescence emitted at this time. CONSTITUTION:The ultraviolet rays from an ultraviolet ray lamp 3a are simultaneously entered to a standard fluorescence emitting body 1 of known emission efficiency and a fluorescence emitting body 2 to be measured, so that both emitting bodies 1, 2 are caused to emit fluorescence. The light emitted from the bodies 1, 2 is entered via photodetecting filters 6, 7 to photoelectric transducers 4, 5, by which it is converted to electric signals, after which the signals are integrated with integrators 8, 9. When the integrated value of the standard size integrator 8 assumes a predetermined value, the integration of the integrator 9 to be measured is stopped. The integration value of the integrator 9 of this time is displayed as a fluorescence dose in a display device 11.
Patent JP-S62185127-A (JP)
Title: Color rendering properties inspection card of light source
Inventor: TAKAHASHI YASUHIRO
IPC: G01J3/52
Filed: 1986-02-10
Abstract: PURPOSE:To enable quick inspection of quality of color in lighting, by providing a rendering inspection properties card of a light source so arranged that it looks the same in color under a reference light source and a natural daylight while differences appear in color otherwise. CONSTITUTION:A color rendering properties inspection card of a light source is mainly composed of three provided adjoining coloring sheets A, B and C provided adjoining thereon. The sheets A, B and C use pigments different different from one another, the sheets A and B will look the same under the condition of a reference light source (color temperature 5,000 deg.K) and the sheets B and C will look the same under a CIE daylight D65 (color temperature 6,500 deg.K) established as natural daylight. Under other light sources, it is so arranged that a difference appears in color between the sheets A, B and C. In the case of printed matters, the light source can be used as intact only if the sheets A and B look the same while the sheet C does different and hence, the lighting indicates a state near the reference light source. If the sheet B and C look the same while the sheet A does different, the light source can be used for ordinary purposes.
Patent JP-S53113443-A (JP)
Title: Information processing system
Inventor: SATOU FUMITAKA
IPC: G06F9/00
Filed: 1977-03-15
Abstract: PURPOSE: To process a failure in CPU without manual operation, by providing flopy disc units and a microprocessor with the operation console. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-H0714184-A (JP)
Title: Tracking control device
Inventor: TAKAMINE KOICHI
IPC: G11B7/09
Filed: 1994-02-25
Abstract: PURPOSE:To perform tracking control with high accuracy by always performing the tracking control basing on an optical axis as a reference and correcting an offset of a galvanomirror. CONSTITUTION:The galvanomirror 19 for changing the direction of a light beam for irradiation of a disk 7 is turned by a driving circuit 26. A track deviation signal is obtained from an output of a photodetector 12 for detecting a deviation of an irradiating position, with the light beam from a track on the disk. A rotary angle at the time when the galvanomirror 19 is turned, is detected by a photosensor 21, and an offset due to the turning is canceled by this turning angle, so that a differential amplifier 13 for correcting the track deviation signal is equipped. At the time of retreaving a track on the disk 7, an output of a phase compensation circuit 24, where an added output of an output of a low-pass filter based on the output of the photodetector 12 and an output of a DC-cut filter based on the output of the photosensor 21 is phase- compensated, is negatively fed back to a driving input of the galvanomirror 19, and even in case of disturbance, the galvanomirror 19 is locked to make the center of a light spot coincide with the center of an optical axis of an optical system.
Patent JP-S56125173-A (JP)
Title: Magnetic recording and playback device
Inventor: MATSUMOTO KATSUMI
IPC: G11B5/027
Filed: 1980-03-07
Abstract: PURPOSE:To enable to obtain the still picture without fluctuation even with screen of rapid movement, by stopping the run of magnetic tape and making playback with the main circuit magnetic head having the same azimuth as the auxiliary head. CONSTITUTION:The rotary cylinder 16 turned toward the arrow X0 is provided with the main rotation magnetic heads A, B with distance of 180 deg. toward rotational direction. At a given location on the rotating circle of the main heads A, B the auxiliary head C is provided near the head B. The azimuth angle of the gap of this head C is set equal to that of the head A. Further, the playback of still picture is made with heads A and C by playing back one track recorded with the head A. Thus, the since the video signal for one frame's share is played back by using the video signal for one track's share, the still picture without fluctuation can be obtained even with screen of rapid movement.
Patent JP-H09222570-A (JP)
Title: Light wavelength selecting device
Inventor: AKIMOTO KOJI
IPC: G02B26/00
Filed: 1996-02-16
Abstract: PROBLEM TO BE SOLVED: To eliminate the need for a thermostatic chamber and to attain miniaturization of the device by varying the length of a resonator by a driving mechanism which drives a movable reflecting mirror in parallel while holding it at right angles to the optical axis. SOLUTION: An etalon resonator is constituted so that the mirror surface of the movable mirror 7 and the vertical end surface 5A of an optical fiber 5 are arranged closely in parallel and resonator length is made variable by driving the movable reflecting mirror 7 by the movable reflecting mirror driving mechanism 6 while the mirror 7 is held at right angles to the optical axis, and an optical fiber coupler 4 is composed of two optical fibers 4A and 4B. further, one-end sides of the two optical fibers 4A and 4B, i.e., a light incidence port 1 or light projection port 2, and one of other ports (copling port 3) are connected optically to a variable etalon resonator, and the other one is connected to a matching oil 8.  Light which is made incident from the light incidence port 1 is made incident on the etalon resonator by an optical fiber 5 and made to interfere, and projection light is branched again by the optical fiber coupler 4 and projected from the light projection port 2.
Patent JP-H01205891-A (JP)
Title: Method for controlling laser beam machine
Inventor: KOJIMA JUNICHI
IPC: B23K26/00
Filed: 1988-02-12
Abstract: PURPOSE:To always maintain laser beam energy received by material to be machined constant by controlling to change the laser beam output according to a shape of the material to be machined and the distance between the material to be machined and a machining head. CONSTITUTION:When the laser beam machining head 12 shifts to cutting of a corner part S in a circular arc shape from cutting of a flat surface part F of the material 18 to be machined, the distance (l) between both is detected by a gap sensor 19 and in addition, a plate thickness (t) is detected by a sensor 20. The radius (r) of curvature of the corner part S is calculated from the relation between the radius (l+r) of curvature and (l) of a moving locus of the F S part at a constant speed. The energy concentration ratio epsilon={2(l+r)/(2r-t)} is then calculated and the laser beam output is controlled based on an operation program and a machining program of the laser beam machining head 12 stored in a computer in advance. By this method, the laser beam energy received by an area per unit of the material to be machined is always kept constant.
Patent JP-H09220759-A (JP)
Title: Attachment method of label to mold
Inventor: SUZUKI SABURO
IPC: B29C33/14
Filed: 1996-02-16
Abstract: PROBLEM TO BE SOLVED: To perform label attaching operation automatically attaching a label to the inside of a blow mold for performing in-mold labeling in biaxially stretching blow molding in such a state that the opening stroke of the mold is reduced without delaying a molding cycle. SOLUTION: The label attaching apparatus 20 arranged along a molding line 1 is constituted so that a label 26 is received from a label magazine 25 by a label supply pad 50 to be fed to the gap between blow molds 3A, 3B along the direction of the molding line 1. A part of the surface of the mold prescribing a label attaching surface becomes a movable mold core and this core advances to the position protruding from a mold mating surface to receive the label 26 from the label supply pad 50 and returns to the position of the original mold surface to attach the label. The label supply pad 50 may be only reciprocally moved in a uniaxial direction.
Patent JP-H10229394-A (JP)
Title: Video conference system
Inventor: YUKI MASARU
IPC: H04L12/18
Filed: 1997-02-13
Abstract: PROBLEM TO BE SOLVED: To provide a video conference system without any inconvenience which is capable of surely confirming an IP address of a communication terminal, allocated from a network host and utilizing the communication terminal which is temporarily connected with a network through the network host as a video conference terminal. SOLUTION: Communication terminals 1, 2 which are temporarily connected with a network 30 through the network hosts 100, 200 are utilizes as video conference terminals in a video conference system, each of the communication terminals 1, 2 is provided with a function for detecting the IP address which is temporality allocated from the network hosts 100, 200 when the network is connected, and to display the detected IP address.
Patent JP-S63194852-A (JP)
Title: Apparatus for producing metal fine wire
Inventor: TSUBATA HISAYASU
IPC: B22D11/06
Filed: 1987-02-10
Abstract: PURPOSE:To stably, continuously and economically form a metal fine wire having high quality and round section by constituting a molten metal discharging crucible by two steps at upper and lower, which a continuous melting part for raw metal and a continuous discharging part for the molten are consecutive ly arranged as one body. CONSTITUTION:The molten metal discharging the crucible 1, is consecucutively arranged as one body by the upper step melting part 12A and the lower step molten metal discharging part 12B and the raw metal is continuously supplied into the upper step melting part 12A and the molten metal is supplied into the lower step molten metal discharging part 12B by overflow. Therefore, at the time of charging the raw metal, the temp. variation of the molten metal at the upper step is wide, such as + or -10 deg.C, but this variation at the lower step is become to narrow, such as within + or -1 deg.C, and temp control at the lower step molten metal discharging part 12B is become to easy caused to develop on disturbance of the discharging flow. Further, as the slag in the molten metal is floated up, separated, absorbed and filtered out at the upper step molten metal part 12A, clogging of a nozzle 4 does not occur and always stable discharging flow is obtd. and the metal fine wire can be continuously formed.
Patent JP-S62188771-A (JP)
Title: Surface hardening method for structural steel
Inventor: TAKADA KATSUNORI
IPC: C23C8/30
Filed: 1986-02-14
Abstract: PURPOSE:To enable desired surface hardening even in case of a low-C member by using a gaseous mixture of an inert gas with a nitriding gas and a carburizing gas as a working gas when a plasma jet flame or plasma arc is irradiated on a steel member. CONSTITUTION:A plasma jet flame or plasma arc is generated by using a gaseous mixture of an inert gas such as Ar or He with a nitriding gas such as nitrogen and a carburizing gas such as methane as a working gas, and the flame or arc is irradiated on a structural steel member to carry out surface hardening. By this method, N and C atoms penetrate rapidly into the surface of the member, so satisfactory surface hardness and desired high fatigue strength are obtd. even when the member has a low C content.
Patent JP-S59155703-A (JP)
Title: Gap position detector using transmitted light
Inventor: MORI HIDEOMI
IPC: G01B11/00
Filed: 1983-02-25
Abstract: PURPOSE:To reduce the size by a method wherein a gap position detector is composed of a light projector and a plurality of light detection elements and the projector is provided to one side of an object which has a gap to be detected and the deection elements detect the light from the projector provided to another side through the gap. CONSTITUTION:A pair of long pipe pieces 1A are arranged symmetrically about a seam 1B which is a gap. A lamp 3 is lighted on one side of the pipe pieces 1A by a source from a light projector 2. The lamp is fixed to a supporting frame 4 made of a highly heat-conductive material such as aluminum. Becuase the pipe 1 is moved along the direction of the paper surface, the lamp 3 and the supporting frame 4 are provided inside the pipe pieces 1A. Therefore, a filter 5 is provided between the lamp 3 and the pipe 1 to protect the lamp 3. An array 6 of a plurality of optical fibers is provided to another side of the pipe 1 perpendicular to the longitudinal direction of the pipe 1. The light transmitted through the gap delta of the seam 1B of the pipe 1 is detected by an array of phototransistors T1-Tm through the optical fiber array 6 and the signal is transferred to a light detection processing unit 8 through a cord 7.
Patent JP-S59157795-A (JP)
Inventor: ITOU TADASHI
IPC: G08B25/00
Filed: 1983-02-25
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-S59156585-A (JP)
Title: Electron beam welding method
Inventor: SUGIE YASUAKI
IPC: B23K15/00
Filed: 1983-02-25
Abstract: PURPOSE:To obtain a satisfactory corner joint or T joint without requiring repair welding, etc. in the molten surface part of welding members in the stage of electron beam welding by sloping the mating surfaces of a groove. CONSTITUTION:A groove part is constituted of weldong materials 1, 2, a mating surface 3 of a groove, and a weld metal 4. The surface 3 is sloped at 5-20 deg.. Said surface is so set as to make no gap between the members 1 and 2 as far as possible when the members 1 and 2 are mated at the same sloped groove angle and electron beam welding is performed along the surface 3 in the case of performing electron beam welding. The melting on the surface of the peripheral welding members except the surface 3 by the penetrated beam is prevented by providing the above-described inclination to the surface 3. Since an external force is supported by the weld metal and the welding members in the case of the joint formed according to this invention, the breaking load of the joint is larger than the joint of a conventional type. If the rate of decrease in the strength of the joint of the conventional type with respect to the welding members is 10%, the rate of decrease in the joint strength according to this invention with respect to the welding members with 20 deg. sloped bevel groove angle and 50mm. plate thickness of the member 1 is supressed to 2-3% with the joint formed according to this invention.
Patent JP-H07239150-A (JP)
Title: Water heater
Inventor: TANAKA AKIRA
IPC: F24H1/10
Filed: 1994-02-28
Abstract: PURPOSE:To obtain a water heater enabling exact supply of hot water from two or more hot-water connection ports which emable selection and setting of different hot-water temperatures according to purposes of use. CONSTITUTION:In the main body of a water heater, a high-temperatureside hot-water connection port 17 and a separate variable-side hot-water connection port 16 and taking out a mixture of water and hot water from the middle of a supply water piping 18 for a heat exchanger 4 and of a hot supply water piping 19 taking out the hot water heated by the heat exchanger 4 are provided, and a mixing valve 14 so designed as to enable regulation of the quantities of mixed water and hot water is provided at a joining part of a branch piping and a mixture piping. A variable-side hot supply water temperature detector 15 is provided in the middle of the mixture piping, while a variable-side hot supply water temperature setting unit 15 is provided in an operating panel, and the opening of the mixing valve 14 and, at the same time, a main burner 10 are controlled by a variable-side hot supply water temperature controller 25 so that a temperature detected by the variable-side hot supply water temperature detector 15 be the temperature of hot water set by the variable-side hot supply water temperature setting unit 15.