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81. 发明专利

JP2001124738A ELECTRIFICATION-AMOUNT MEASURING APPARATUS 失效
公开(公告)号：JP2001124738A
公开(公告)日：2001-05-11
申请号：JP30672099
申请日：1999-10-28
申请人： SUMITOMO CHEMICAL CO , KASUGA ELECTRIC CO
发明人： WATANO SATORU , SUZUKI TERUO , OKABASHI YOSHITOKU , KANAHOSHI NAOHIKO
IPC分类号： G01R29/24 , G01N27/60
摘要： PROBLEM TO BE SOLVED: To provide an apparatus in which the reproducibility of a measured value is high, in which the amount of a sample required for a measurement is small and by which the electrification easiness of static electricity of the power of an organic substance and that of an inorganic substance is evaluated. SOLUTION: This tubular electrification-amount measuring apparatus is provided with a ventilation port, a sample chamber, a transporation part and a filter sequentially from one end. In the electrification-amount measuring apparatus, a field-strength detector is installed between the transporation part and the filter, or an ammeter is connected to the transportation part, to the other end of the filter is connected to an electric-charge-amount detector through an isolator.

82. 发明专利

JP2001051000A SPACE CHARGE MEASURING DEVICE 失效
公开(公告)号：JP2001051000A
公开(公告)日：2001-02-23
申请号：JP22180799
申请日：1999-08-04
申请人： FUJIKURA LTD
发明人： NAKATSUKA TORU
IPC分类号： G01R29/24 , G01N27/92
摘要： PROBLEM TO BE SOLVED: To obtain a space charge measuring device, capable of setting a measuring cell on a surface of a power cable and also easily measuring, even in the case of a heavy cable. SOLUTION: This device comprises a fixing jig 20 detachably fixing a measuring cell 12 on a surface of an electric power cable 11, which is provided with a film-like piezoelectric device 13, a detecting electrode 14 placed on a face of the device 13, and a buffer block 15 placed on the other face of the device 13. An acoustic wave produced by applying a pulse voltage to an insulation layer of the electric power cable 11.

83. 发明专利

JP2001033502A EQUIPMENT FOR ANALYZING ELECTROSTATIC CHARGE 失效
公开(公告)号：JP2001033502A
公开(公告)日：2001-02-09
申请号：JP20473599
申请日：1999-07-19
申请人： RICOH KK
发明人： KADONAGA MASAFUMI
IPC分类号： G01R29/24 , G03G15/02 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To obtain electrostatic charge characteristics of a charging roller without trial manufacture and experiment of a charging roller. SOLUTION: In equipment for analyzing electrostatic charge simulates charge equipment for charging a photosensitive body by bringing a charging roller into contact with or making the roller approach the surface of the photosensitive body. The charge analyzing equipment includes a data inputting part 1, an electric field calculating part 2 and a result displaying part 3. When data are inputted from the data inputting part 1, the electric field calculating part 2 calculates the quantity of charges accumulated on the sensitized member by using an Ohm's law wherein charge movement moving term in the two-dimensional direction in a roller layer of the charging roller is considered, a two-dimensional Poisson's equation, and an equation wherein Paschen's discharge law is considered. The result of calculation is displayed on the result displaying part 3, so that charge characteristic of the charging roller can be known.

84. 发明专利

JP2001004681A CHARGE DETECTOR 失效
公开(公告)号：JP2001004681A
公开(公告)日：2001-01-12
申请号：JP17838899
申请日：1999-06-24
申请人： OLYMPUS OPTICAL CO
发明人： TAKAYANAGI ISAO
IPC分类号： G01R29/24 , G01R19/165 , H03F3/34 , H03F3/70 , H03M1/08
摘要： PROBLEM TO BE SOLVED: To reduce thermal noise and an offset so as to detect charge with high precision by providing a circuit in which a reset switch separate from a reset switch connecting an output terminal and a negative input terminal of an operational amplifier together and a separate capacitor element are connected in series. SOLUTION: A charge input terminal 101 is connected to the ground potential via a capacitor C1 and to a negative input terminal in an operational amplifier circuit 130. The input terminal 101 and an output terminal of the circuit 130 are connected together via a first reset switch 104. A feedback circuit constructed of a second reset switch 105 and aΦRS2 feedback capacitor element C2 is connected to the reset switch 104 in parallel. A reset pulse θ RS1 is impressed to a control terminal 114 in the first reset switch 104, while a second reset pulse ϕRS% is impressed to a control terminal 115 in the second reset switch 105. A capacitor element C3 is connected between a terminal 200 connecting the switch 105 and the feedback capacitor element C2 together and a ground electrode.

85. 发明专利

JP2000346892A MEASURING DEVICE FOR FLUIDIZED ELECTRIFICATION CHARGE 失效
公开(公告)号：JP2000346892A
公开(公告)日：2000-12-15
申请号：JP15787799
申请日：1999-06-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： HOSHINO TAKASHI
IPC分类号： G01R29/24 , G01N27/26
摘要： PROBLEM TO BE SOLVED: To provide a measuring device for fluidized electrification charge for providing an accurate measurement result in a non-contact manner. SOLUTION: This device measures fluidized electrification charges 4a, 4b generated in the interface between a pair of solid insulating materials 2a, 2b provided on respective facing surfaces of a pair of conductors 1a, 1b and a liquid insulating material 3 flowing between the pair of solid insulating materials. This device comprises a voltage generating source 5 for applying pulse-like voltage between the pair of conductors, a piezoelectric element 6 for converting oscillatory wave C generated from the fluidized electrification charges by impression of the pulse-like voltage to an electric signal, and a charge amount detecting means 9 for detecting charge amounts of the fluidized electrification charges based on the electric signal.

86. 发明专利

JP3112904B2 失效
公开(公告)号：JP3112904B2
公开(公告)日：2000-11-27
申请号：JP21902499
申请日：1999-08-02
IPC分类号： G01R29/24

87. 发明专利

JP3104921B2 失效
公开(公告)号：JP3104921B2
公开(公告)日：2000-10-30
申请号：JP27315791
申请日：1991-09-25
IPC分类号： G01R29/24 , G01R31/12 , H01B13/00

88. 发明专利

JP3093717B2 失效
公开(公告)号：JP3093717B2
公开(公告)日：2000-10-03
申请号：JP7225398
申请日：1998-03-20
IPC分类号： G01R29/24

89. 发明专利

JP2000147035A ELECTROSTATIC VOLTMETER AND METHOD FOR INCREASING OUTPUT SIGNAL 失效
公开(公告)号：JP2000147035A
公开(公告)日：2000-05-26
申请号：JP31718599
申请日：1999-11-08
申请人： XEROX CORP
发明人： JOEL A KUUBII , PEETERS ERIC , R ENRIC BITYUROO , HUBBLE FRED F III , WALLACE STANLEY J , WERNER ALAN J JR
IPC分类号： G01R15/16 , G01R29/12 , G01R29/24 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To provide a non-contact electrostatic voltmeter the output, the signal of which can be increased and which measures voltages through capacitive coupling and a method for increasing the output signal of the voltmeter. SOLUTION: An electrostatic voltmeter V has a detection probe assembly 30, containing a plurality of detection probes 30a-30c which measure voltages through capacitive coupling and a movable shutter 32 which has a plurality of windows 34. The shutter 32 can move between a first position, where the assembly 30 is exposed and a second position where the assembly 30 is covered and is positioned adjacent to the assembly 30. In addition, a shutter modulator driver component D, which operationally cooperates with the shutter 32 selectively, moves the shutter 32 between the first and second positions.

90. 发明专利

JP2000055963A DEVICE FOR MEASURING AMOUNT OF CHARGE TRANSFER 失效
公开(公告)号：JP2000055963A
公开(公告)日：2000-02-25
申请号：JP22298398
申请日：1998-08-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NAGAO NOBUAKI , TONO HIDETAKA
IPC分类号： G01R29/24 , G01R31/00 , G09G3/20 , G09G3/28 , H01J9/42 , H01J11/12 , H01J11/22 , H01J11/24 , H01J11/26 , H01J11/34 , H01J11/36 , H01J11/38 , H01J11/40 , H01J11/42 , H01J11/50 , H01J11/02
摘要： PROBLEM TO BE SOLVED: To observe the behavior of wall charge at the time of address by providing both pulse waveform generating devices to impress pulse voltage waveform on the first, second, and third electrodes and a current integration measuring device between one of the electrodes and the corresponding pulse waveform generating device and measuring the changes with time in the amount of charge together with the changes with time in the voltage waveform to be impressed on each electrode. SOLUTION: Pulse waveform generating devices 1 to 3 to impress a drive waveform on each of a scan electrode, a sustaining electrode, and a data electrode are provided. The potential difference Vscn-sus between the scan electrode and the sustaining electrode is detected through the use of a differential amplifier A1. The potential difference Vcs of a reference condenser Cs inserted between the sustaining electrode and the device 1 is detected by a differential amplifier A2. The potential differences Vscn-sus and Vcs and data electrode voltage V data are measured by an oscilloscope. The reference condenser Cs is for measuring the amount of charge on the side of the sustaining electrode, and the amount of charge transfer is computed by measuring the amount of change ΔVcs in the potential difference Vcs which changes due to the drive waveform impressed on each electrode.

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