baber/WOPTO huggingface dataset:
Patent JP-S6125335-A (JP)
Title: Reception circuit of optical signal
Inventor: OKADA HIROSHI
IPC: H04B10/40
Filed: 1984-07-13
Abstract: PURPOSE:To obtain high S/N and noise eliminating capability by using a band eliminating filter having a center frequency in response to a specific frequency as a load to increase an output of a useful frequency signal only. CONSTITUTION:A photodetector 1 of a reception circuit of an optical signal is converted into a voltage signal and fed to a series circuit of band eliminating filters 3, 4 as the load. The characteristic of the series circuit by the filters 3, 4 is set to use frequencies f1, f2 as maximum points and the signal in the frequencies f1, f2 is amplified by an FET2 effectively. Further, a current/voltage converting element 5 is connected to the load comprising the filters 3, 4 to prevent the amplified output of the FET2 from being saturated thereby improving the noise eliminating capability. Then only the signal having a useful frequency in the optical signals is amplifed and outputted to realize high S/N and noise elimination capability.
Patent JP-S5847268-A (JP)
Title: Battery meter device
Inventor: ITOU TAKESHI
IPC: G01R19/165
Filed: 1981-09-16
Abstract: PURPOSE:To enable fine checking of a battery voltage by a method wherein a voltage in the range higher than a reference voltage whereat an apparatus using a battery is operable is enlarged for display through the intermediary of a battery meter circuit. CONSTITUTION:A battery voltage via a power source switching circuit 43 is impressed on the inversion terminal of an opertational amplifier 471 via a resistor R3 of a battery meter circuit 47, while a battery voltage stabilized by a Zener diode ZD1, etc. and a reference voltage obtained from a resistor R5 and a variable resistor VR3, etc. are impressed on the non-inversin terminal thereof. A voltage delivered from this amplifier 471, which corresponds to a battery voltage in the range higher than the reference voltage whereat an apparatus using a battery is operable, is shifted in level and enlarged by an operational amplifier 472. This enlarged voltage is divided and displayed by a display unit having a number of LED, etc. Thus, by enlarging only the necessary range of voltage and by displaying divided voltage in detail, the battery voltage can be checked finely.
Patent JP-H0815492-A (JP)
Title: Cut power removal device
Inventor: YAMAGUCHI SHINICHI
IPC: G21F9/30
Filed: 1994-06-28
Abstract: PURPOSE:To reduce exposure of workers engaging in maintenance and inspection by mounting a cut powder removal device mounting a filter and a submersible pump on a submersible carriage, and sucking cut pieces accumulated on the circumference of a rail with pool water. CONSTITUTION:A cut powder removal device 23 provided with a submersible pump 2 and a filter housing part 4 is mounted on a submersible carriage 12. Suction nozzles of suction tubes 6a-6c are disposed so as to position at the side of rails 21, 22 for the submersible carriages, which are run on the rails 21, 22. And a submersible pump 2 is driven and cut powder accumulated on the circumference of the rail 21 is sucked together with pool water. The cut powder is filtered through a filter 5 incorporated in the filter housing part 4 and filtered pool water is returned to the pool from a discharge nozzle 3. When the number of use times is incresed and blinding is produced in the filter 5, a clamp is released and an upper cover 1 incorporating the submersible pump is separated from the filter housing part 4. And an overhead crane is used and the filter 5 is exchanged. Thereby exposure can be reduced at the time of periodical inspection.
Patent JP-H09327131-A (JP)
Title: Charge-and-discharge control circuit for battery
Inventor: TAMAI MIKITAKA
IPC: G01R31/36
Filed: 1996-06-07
Abstract: PROBLEM TO BE SOLVED: To obtain a charge-and-discharge control circuit which prevents a drop in safety due to the overcharge of a secondary battery and which can deal with the use of a battery in an emergency by providing a charge inhibition circuit which, when an overcharge detection circuit detects the overcharge of the secondary battery, the charge of the secondary battery is inhibited after that but which permits its discharge. SOLUTION: When an overcharge detection circuit 1 detects that the battery voltage of a secondary battery B being charged reaches an overcharge voltage, it outputs a high-level signal from an output terminal OUT1. Thereby, a control transistor Q3 is set to an on-state, a current flows to a heating resistance element R, the element generates heat, a thermal fuse H is blown, a charge control switch Q1 is set to an off-state, and the charge of the secondary battery B is inhibited. At this point, since the overcharge detection circuit 1 outputs a high-level signal from an output terminal OUT2, a discharge control switch Q2 is set to an on-state. Consequently, it is possible to prevent a drop in safety due to the overcharge of the secondary battery, and it is possible to deal with the use of a battery in an emergency.
Patent JP-S5570812-A (JP)
Title: Light modulating device
Inventor: WATANABE SEIO
IPC: G11B7/128
Filed: 1978-11-22
Abstract: PURPOSE: To eliminate the conditions by which duty ratios are limited and perform light modulation with correct bias by detecting the duty ratios of input modulating signal and modulating light intensity signal and supplying the ratio difference of both signals to a light modulator.  
     CONSTITUTION: The first duty ratio detector 33 which detects the duty ratio of modulating light intensity signal is constituted by a voltage comparator 31 which compares the input modulating signal from input terminal 2 and a reference signal and outputs a binary voltage signal and a low pass filter 32 which receives the output of said comparator as the first input of a differential amplifier 14. The second duty ratio detector 36 which detects the duty ratio of the input modulating signal is constituted by a voltage comparator 34 which compares the modulating light intensity signal of the output light detector 11 and a reference signal and outputs a binary voltage signal and a low pass filter 35 which receives the output of said comparator as the second input of a differential amplifier 14. Thereby, the light modulation may be accomplished with correct bias. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-S632339-A (JP)
Title: Evaluation of sealing resin
Inventor: KATO KAORU
IPC: H01L21/56
Filed: 1986-06-20
Abstract: PURPOSE:To evaluate the influence of impurities in resin to an electronic component by covering a semiconductor substrate with a protective film, sealing it with resin to be evaluated, forming an electrode thereon, and evaluating the resin by an element to be evaluated while applying a voltage between the electrode and an element forming region. CONSTITUTION:When an element 6 to be evaluated is used, a semiconductor substrate 1 is first covered with a protective film 7 made of PSG, NSG, etc. Since a voltage VAB between A and B is obtained by subtracting the resistance value R of resin 8 from the voltage of a power source V applied to between an electrode 9 and an element forming region 2 and the resistance value R of the resin 8 is inversely proportional to the quantity of impurity ions moving from the resin 8 to a protective film 10 by the applied voltage, it is obvious that the voltage VAB between A and B is regularly proportional to the quantity of the moving impurity ions. Accordingly, when charge (q) charged at the thermal oxide film is measured by an element 6 to be evaluated, the voltage VAB between A and B, i.e., the quantity of the impurity ions for moving the resin 8 can be known to decide the propriety of the resin.
Patent JP-H072003-A (JP)
Title: Seat device for vehicle
Inventor: WATANABE MASAYA
IPC: A47C7/14
Filed: 1993-06-17
Abstract: PURPOSE:To provide a seat device which can satisfy a variety of demands of a driver by spreading the degree of freedom in the change of seat arrangement, as for a vehicle equipped with a pair of seats which are arranged in extension in the car body longitudinal direction along both the side walls of a car room and opposed each other, behind a driver's seat. CONSTITUTION:One seat 15 among a pair of seats 15 and 15 which are arranged in extenison in the longitudinal direction of the car body along both the side walls 11a and 11a of a car room and opposed each other is installed in a turn shiftable manner in nealy 90 deg. in the hoizontal plane, and one seat 15 is connected with the other seat 15 through the shift, and a seat having an L-shaped plane view is formed.
Patent JP-H10315536-A (JP)
Title: Optical scanner
Inventor: MIYAZAKI YOSHINORI
IPC: G02B7/00
Filed: 1997-05-20
Abstract: PROBLEM TO BE SOLVED: To provide an optical scanner in which the effect on the optical characteristics can be suppressed when an optical element is deformed. SOLUTION: A light source 3 emitting a light beam, a deflector 4 for deflecting/scanning a luminous flux from the light source 3, and optical elements 6, 8 for focusing the luminous flux reflected on the deflector 4 on the surface of a photosensitive body are housed in an optical housing 1 with the reflective optical element 6 being urged with an appropriate pressure using a leaf spring 5. According to the structure, the reflective optical element 6 is held in the optical housing 1 while allowing deformation thereof.
Patent JP-S6126261-A (JP)
Title: Vertical mosfet and manufacture thereof
Inventor: NAKAJIMA BAN
IPC: H01L29/417
Filed: 1984-07-16
Abstract: PURPOSE:To enable the driving of micro current of high voltage by a method wherein source-drain regions are formed on the bottom and the top of a groove formed in the main surface of a semiconductor substrate, and a lead-out electrode so connected to the groove bottom as to fill the groove is formed. CONSTITUTION:The groove 14 is formed almost vertically to the main surface of the p type Si substrate 11, and the source-drain regions 12 and 13 are formed in the main surface of the substrate in its tops and at the groove bottom. A gate electrode 16 is formed so as to cover the groove side surface via gate oxide film 15, and the lead-out electrode 17 is so formed as to fill the groove 14 by being insulated from the gate electrode with an insulation film 21. Besides, a channel dope region is formed between both the source and drain regions 12 and 13. Such a formation allows no restriction in application that a limitation is made when one of the regions 12 and 13 is used as the common electrode and can provide the power to drive micro current of high voltage.
Patent JP-H075139-A (JP)
Title: Concentration sensor for sulfuric acid
Inventor: SANO SHIGERU
IPC: G01N27/06
Filed: 1993-06-17
Abstract: PURPOSE:To allow easy detection of the concentration of sulfuric acid by using a sensor body composed of a polymeric compound, shown by a specific formula, which reacts on the sulfuric acid and the conductivity thereof varies according to a monovalent function as the concentration of sulfuric acid varies. CONSTITUTION:A polymeric compound shown by a formula (where, Z represents an aromatic heterocycle, R represents a hydrogen or other monovalent group, and n is an integer higher than 1) or an oxide or quaternary compound thereof is prepared. The aromatic heterocycle of Z includes boric acid, nitrogen, etc., and Z includes 1,4-phenylene group, etc., R includes a monovalent group being bonded with N in the formula through any one transition metal of boric acid or carbon. DC or AC voltage is applied to the sensor body depending on the application and the concentration of sulfuric acid is determined based on the conductivity of the body which is determined by measuring the level of current flowing through the body, i.e., the polymeric compound. In the polymeric compound, reaction on sulfuric acid takes place determinately to exhibit variation of conductivity clearly thus allowing accurate detection of the concentration.
Patent JP-S5849110-A (JP)
Inventor: NAKATANI MASATOSHI
IPC: A47C1/035
Filed: 1981-09-18
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-H05112892-A (JP)
Title: Aluminum material excellent in filiform rust resistance
Inventor: KANAMARU TATSUYA
IPC: C25D5/02
Filed: 1991-06-18
Abstract: PURPOSE:To provide an aluminum material excellent in filiform rust resistance. CONSTITUTION:The surface of aluminum or its alloy is discontinuously coated with at least one kind among Fe, Co, Cu, Cr and Mn so that the aluminum surface will partially be exposed. Thus, its chemical convertibility such as phosphating properties improves, by which the generation of filiform rust after coating can be prevented.
Patent JP-H022038-A (JP)
Title: Medium contrast printing system of liquid crystal electrophotographic printer
Inventor: SHINADA TAKAO
IPC: B41J2/52
Filed: 1988-06-14
Abstract: PURPOSE:To perform arbitrary medium contrast printing by providing a pair of polarizing plates, a plurality of liquid crystal shutter arrays inserted therebetween to change the quantity of transmitted light and a plurality of control circuits. CONSTITUTION:Transmitted light 9 is emitted from a light source 1 and passes through the first polarizing plate 2, the first and second liquid cristal shutter arrays 3, 4 and the second polarizing plate 5 to irradiate a photosensitive drum 8. The photosensitive drum 8 has potential corresponding to the quantity of the light allowed to irradiate said drum 8. In the first and second liquid crystal shutter arrays 3, 4, the respective liquid shutters thereof are individually driven by the first and second control circuits 6, 7 and, when the transmissivities of the liquid crystal shutters are respectively set to theta1, theta2, 100% of transmissivity is set to the black printing density level of a usual liquid crystal electrophotographic printer and theta1.theta2 of the transmissivity is set to a white printing density level, medium contrast printing becomes possible on the basis of theta1, theta2.
Patent JP-H0327191-A (JP)
Title: Bleaching of pulp containing lignocellulose
Inventor: RUNGUREN PAARU GEE
IPC: D21C9/10
Filed: 1990-06-06
Abstract: PURPOSE: To obtain a lignocellulose-containing pulp having low total chlorine value with a small amount of a peroxide by treating a pulp with a complexing agent in the absence of a sulfite under a specific condition of pH and temperature within specified ranges to remove a trace metal, regulating the pH, and treating the product with a peroxide to breach the pulp. CONSTITUTION: This method for chemically breaching a delignified lignocellulose-containing pulp comprises treating the pulp with a complexing agent (e.g. ethylenediaminetetraacetic acid) in the absence of a sulfite under a condition of pH 3.1-9.0 and 10-100 deg.C temperature to remove a trace metal, and carrying out the treatment of the product with a peroxide-containing material (e.g. hydrogen peroxide) within the range of pH 7-13 to effectively carry out the treating step with the peroxide-containing material and to breach the lignocellulose-containing pulp.
Patent JP-H09304954-A (JP)
Title: Electrophotographic image forming apparatus
Inventor: NIIMI TATSUYA
IPC: G03G5/07
Filed: 1996-05-17
Abstract: PROBLEM TO BE SOLVED: To provide a small-sized image forming apparatus which has high durability and enables high speed by incorporating an electrophotographic photoreceptor having a photosensitive layer containing a high polymer charge transport substance having a specified carrier mobility. SOLUTION: A charging device 2, an image exposure device 3, a developing device 4, a transfer charging device 6, a separation charging device 6, and a cleaning device 7 are disposed in the periphery of a photoreceptor 1. The photoreceptor 1 has at least a charge generation layer and a photosensitive layer containing a high polymer charge transport substance having a carrier mobility of 1×10<-5> cm/Vsec or more under an electric field of 3×10<5> V/cm on a conductive support. By using the photoreceptor where a charge transport layer is formed by a high polymer charge transport substance with such a high mobility, the durability can be heightened in repeated use in a system, and it can be used in an image forming process in which the amount of time elapsed from the exposure start to the development end is 0.1 second or less to obtain a good image.
Patent JP-H04346321-A (JP)
Title: Compound semiconductor light switch
Inventor: SUZAKI SHINZO
IPC: G02B6/12
Filed: 1991-05-23
Abstract: PURPOSE:To provide a compound semiconductor light switch having an excellent high-speed switching property, excellent quenching ratio characteristic, and high switching efficiency at low inrush current. CONSTITUTION:In a directional coupler type light switch of electric field-applied type or carrier injection type which is formed by laminating a buffer layer 2, two mesa type light wave guide layers 3, 4, and clad layers 5, 6 on a III-V group compound semiconductor semi-insulative substrate 1, a straight line shape groove penetrating through the buffer layer 2 into the substrate 1 is formed on a center line between the two opposed light wave guide layers 3, 4, and thus the two light wave guides are electrically separated from each other.
Patent JP-2000336456-A (JP)
Title: Hot rolled wire rod-bar steel for machine structure and production thereof
Inventor: KANISAWA HIDEO
IPC: C21D8/06
Filed: 1999-05-26
Abstract: PROBLEM TO BE SOLVED: To produce wire rod-bar steel for machine structure as hot-rolled having cold workability equal to that of the conventional wire rod-bar steel subjected to softening/annealing after hot rolling and to provide a method for producing the same. SOLUTION: This hot rolled wire rod-bar steel for machine structure is composed of steel contg., by weight, 0.1 to 0.5% C, 0.01 to 0.5% Si and 0.3 to 1.5% Mn, and the balance Fe with inevitable impurities and contg. strengthening componential elements at request and having a microstructure of ferrite and pearlite, in which the ferrite crystal grain size number prescribed in JIS G 0552 is >=11, the diameter equivalent to a circle is <=2 μm, and granular carbides of <=3 aspect ratio are contained by 3 to 15% area ratio.
Patent JP-S5371816-A (JP)
Title: Recorder-reproducer
Inventor: SHIMADA CHIYOU
IPC: H04N5/92
Filed: 1976-12-08
Abstract: PURPOSE: To obtain reproduction signals of good quality even if there is a difference in the operation characteristics of each pair of signal converting circuits by forming a negative feedback loop including at least a pair of signal converting circuits which make mutually complex operations at the recording. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-H0322254-A (JP)
Title: Stabilizer
Inventor: MIHASHI DAISUKE
IPC: G11B17/34
Filed: 1989-06-12
Abstract: PURPOSE:To stably guide a magnetic sheet to a magnetic head without fail and to prevent fluttering, etc., by providing a projecting part for negative pressure generation on a flat surface facing with the magnetic sheet and providing a groove for positive pressure exclusion in a recessed part surrounding an opening part through a head. CONSTITUTION:A rectangular projection 24 is provided to be protruded to an upstream side in the rotational direction of a flat surface 23 facing with a magnetic sheet 22 in a main body 21 of a stabilizer and a recessed part 28 is formed to surround an opening part 25 through a head 26 in the central part of the main body 21. A rectangular groove part 29 is formed along the rotational direction of the magnetic sheet 22 in the downstream side for the rotational direction of the magnetic sheet 22 on the flat surface 23. An inclined surface 32 is provided in the upstream side for the rotational direction of the magnetic sheet 22. With the rotation of the magnetic sheet 22, positive pressure is generated between an auxiliary board 33 and the magnetic sheet 22 and the magnetic sheet 22 is pushed to the side of magnetic head 26. Then, negative pressure is generated between the projecting part 24 and recessed part 28 and the generation of the positive pressure is excluded by the groove part 29. Then, the magnetic sheet 22 is slided and securely in contact with the head 26.
Patent JP-S5573166-A (JP)
Title: Information drum device
Inventor: OKAMURA SHIROU
IPC: H04N1/06
Filed: 1978-11-28
Abstract: PURPOSE: To realize a small size and simple handling for the drum device by driving the drum via the pulley or the like and by the motor and the strings via the belt or the like each plus making use of adsorption of the paper onto the inner wall of the cylinder.  
     CONSTITUTION: Drum 1 is turned by motor 12, and the stencil paper plus paper 2 and 3 are stuck inside and outside the drum. And transmission and reception heads 4 and 5 are linked together via the string or chain 18 to be moved up and down via pulley 9 and in the well bucket method. Motor 12 drives drum 1 via pulley 13, belt 14 and others as well as string 18 via belt 11 and pulley 10 respectively. Thus a small size and simple handling can be realized by utilizing the adsorption of the paper onto the inner wall of the cylinder due to the centrifugal force. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-H11339421-A (JP)
Title: Optical pickup cleaning apparatus
Inventor: KUWABARA MASAAKI
IPC: G11B23/00
Filed: 1998-05-28
Abstract: PROBLEM TO BE SOLVED: To assure simplified cleaning of an optical pickup. SOLUTION: A disk medium 10 is provided, sequentially from the internal side, with a margin 12, a read-in 14, a recording area 16 for recording a music or the like and a read-out 18. In the read-in 14, a medium identifying information indicating a class of disk medium 10 (for recording/reproducing operation/ reproducing operation only) and a medium basic information such as the reproducing power and recording time or the like are recorded. To the surface opposing to the optical pickup 20 of the disk medium 10, a brush 22 for cleaning the optical pickup 20 is implanted. The brush 22 is arranged on the inner most circumference side in the inside of the read-in 14.
Patent JP-H0439398-A (JP)
Title: Method for fractionating and purifying lipid fraction from hydrophilic organic solvent extract of animal fats and oils
Inventor: MURAKAMI MOTOTAKE
IPC: C11B1/10
Filed: 1990-06-05
Abstract: PURPOSE:To respectively and efficiently fractionate and purify each lipid fraction to high purity by fractionating an extract of animal fats and oils with a specific organic solvent by centrifugal liquid-liquid partition chromatography with a specific solvent and purifying the lipid fractions. CONSTITUTION:An extract of animal fats and oils with a hydrophilic organic solvent is subjected to centrifugal liquid-liquid partition chromatography by using a mixed solvent of a saturated hydrocarbon/alcohol/water or a mixed solvent of a saturated hydrocarbon/ether/alcohol/water and respectively fractionated into a short-chain fatty acid triglyceride fraction, a steroid fraction such as cholesterol, a phospholipid fraction such as phosphatidylethanolamine, phosphatidylcholine or sphingomyelin and/or a glyceroglycolipid fraction such as lactosylceramide, glucosylceramide or ganglioside. The resultant fractions are then purified.
Patent JP-S5573479-A (JP)
Title: Tandem system high speed arc welding method
Inventor: SHIMADA WATARU
IPC: B23K9/173
Filed: 1978-11-27
Abstract: PURPOSE:To form an excellent weld bead at high speed, by melting and smoothing the bead surface layer by TIG welding after forming a bead on the steel plate by MIG welding in a shielding gas containing O2 and H2 by specified contents in Ar. CONSTITUTION:While feeding Ar containing O2 by 0.2-2wt% and H2 by 0.4- 4% from a gas feed hole 4 in a trailer shield nozzle 3 as shielding gas, non-oxidation weld bead 7 is formed on a steel plate by means of a MIG welding torch 1 having an electrode wire 2. A TIG welding torch 5 which is connected to said torch 1 in a position behind the same MIG welding torch 1 and has W electrode 6 is moved to the left at high speed, and the surface layer of the non-oxidation weld bead 7 is melted and smoothed by the torch 5. In this method, high-speed welding may be performed stably, and an excellent weld bead free of undercut may be easily obtained.