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1. 发明专利

DE3738487A1 未知
公开(公告)号：DE3738487A1
公开(公告)日：1988-05-26
申请号：DE3738487
申请日：1987-11-12
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： MITSUYA TERUAKI , KUMASAKA TAKAO , HIGAKI MASARU , FUJIWARA SHIGETAKA
IPC分类号： G03G15/20 , B65H3/06 , B65H43/00
摘要： The timing signal generated by the paper sending-out roller or the paper detector outputs a signal with synchronously the paper sending-out cycle. The flash lamp photoflashes with synchronously the output signal. The photoflash is generated in accordance with length of carrying direction of the paper. The paper sending-out roller sends out one of a plurality of the papers in accordance with a predetermined timing signal, and the flash lamp photoflashes at a predetermined number of times and stops the flashlight at a predetermined time in accordance with the predetermined timing signal as an index. The paper detector is installed at a position close to the paper carrying apparatus line from the flash fusing apparatus, and a delay circuit is provided so as to delay the detection output of the paper detector with a predetermined time. No photoflash irradiates the gap between a precede paper and a next paper at the continue printing the a plurality of cut sheets.

2. 发明专利

JPS63243983A FIXING DEVICE FOR RECORDER 失效
公开(公告)号：JPS63243983A
公开(公告)日：1988-10-11
申请号：JP7579987
申请日：1987-03-31
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： MITSUYA TERUAKI , KUMASAKA TAKAO , HIGAKI MASARU , FUJIWARA SHIGETAKA
IPC分类号： G03G15/20
摘要： PURPOSE:To surely detect the timing of flash light emission without using a shutter mechanism and to prevent mis-shot and failure in emission of a flash light by providing a recording paper detector so as to prevent direct projection of the flash light of a flash lamp thereto. CONSTITUTION:Recording paper 5 is conveyed by a conveyance path 14 and an unfixed toner is adhered as an image on the surface thereof by a transfer device 7; thereafter, the paper is conveyed to the position right under a flash fixing device 1, where the flash light of the flash lamp 15 is projected toward the surface of the paper 5. The recording paper detector 4 in this case is installed in the position within the range nearer the paper feed side than the position right under the device 1 and nearer the paper feed side than a bent part Q. The flash light is, therefore, not directly projected to the detector and since the leak light of the flash light is shielded by the bent part Q, the light intensity thereof is considerably lowered. The direct incident flash light on the detector is thereby eliminated and in addition, the intensity of the leak flash light is weak; therefore, the failure and malfunction (wrong detection of recording paper) of the detector 4 are prevented and the mis-shot and failure in emission of the flash light are eliminated accordingly.

3. 发明专利

JPS63121880A FIXING DEVICE 失效
公开(公告)号：JPS63121880A
公开(公告)日：1988-05-25
申请号：JP26763586
申请日：1986-11-12
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： MITSUYA TERUAKI , KUMASAKA TAKAO , HIGAKI MASARU , FUJIWARA SHIGETAKA
IPC分类号： G03G15/20 , G03G15/00 , G03G21/00
摘要： PURPOSE:To prevent recording paper from deforming by performing flash irradiation while synchronizing the conveyance period of recording paper conveyed periodically to a fixing device with the light emission period of a flash lamp. CONSTITUTION:A paper feed roller 6 rotates until one sheet of recording paper is placed on a conveyance path 14, then stops for a constant time, and rotates again until the next sheet of recording paper is placed on the conveyance path repeatedly. The recording paper 7 is conveyed at specific speed, so one sheet of recording paper is constant in the time from the start of the rotation of the paper feed roller 6 for placing the recording paper on the conveyance path to the arrival at the flash lamp 1 and the output of a paper feed timer circuit 4 is supplied as a 1st timing signal to a delay circuit 3 which delays the signal by the time and the output of it is supplied as a 2nd timing signal to the light emission control circuit 17 for a light emitting circuit 3 through an input terminal 18, so that the lamp 16 emits light only when the recording paper 7 moves to right below the flash lamp. Consequently, the recording paper is prevented from deforming owing to the heating of a conveying device.

4. 发明专利

JPH065433B2 失效
公开(公告)号：JPH065433B2
公开(公告)日：1994-01-19
申请号：JP26763586
申请日：1986-11-12
申请人： HITACHI SEISAKUSHO KK , HITACHI KOKI KK
发明人： MITSUYA TERUAKI , KUMASAKA TAKAO , HIGAKI MASARU , FUJIWARA SHIGETAKA
IPC分类号： G03G15/20 , G03G15/00 , G03G21/00

5. 发明专利

IN153215B WINDING FOR STATIC INDUCTION APPARATUS 未知
公开(公告)号：IN153215B
公开(公告)日：1984-06-16
申请号：IN238CA1981
申请日：1981-03-04
申请人： HITACHI LTD
发明人： MIKI ATSUSHI , MORI ETSUNORI , HOSHI MINORU , HIGAKI MASARU
IPC分类号： H01F27/28 , H01F27/34 , H01F5/00
摘要： A winding for a static induction apparatus such as a transformer, a reactor and the like comprises a plurality of interleaved coils each formed by winding an electrically insulated strand conductor in a radial spiral. The coils are stacked axially and electrically connected in series between a line terminal and another terminal such as a neutral terminal. The winding is divided into a plurality of blocks each including a plurality of ones of the interleaved coils. The number of turns of each coil belonging to the block on the other terminal side is decreased as compared with that of each coil belonging to the block located closer to the line terminal, to thereby reduce the series electrostatic capacitance of the coils stepwise from one to another block starting from the one located on the line terminal side. The distribution constant is thus decreased. Favorable surge withstanding characteristics are attained, reliable insulation is assured and the winding can be realized in a reduced size.

6. 发明专利

CA1153433A WINDING FOR STATIC INDUCTION APPARATUS 未知
公开(公告)号：CA1153433A
公开(公告)日：1983-09-06
申请号：CA372198
申请日：1981-03-03
申请人： HITACHI LTD
发明人： MIKI ATSUSHI , MORI ETSUNORI , HOSHI MINORU , HIGAKI MASARU
IPC分类号： H01F27/28 , H01F27/34
摘要： A winding for a static induction apparatus such as a transformer, a reactor and the like comprises a plurality of interleaved coils each formed by winding an electrically insulated strand conductor in a radial spiral. The coils are stacked axially and electrically connected in series between a line terminal and another terminal such as a neutral terminal. The winding is divided into a plurality of blocks each including a plurality of ones of the interleaved coils. The number of turns of each coil belonging to the block on the other terminal side is decreased as compared with that of each coil belonging to the block located closer to the line terminal, to thereby reduce the series electrostatic capacitance of the coils stepwise from one to another block starting from the one located on the line terminal side. The distribution constant is thus decreased. Favorable surge withstanding characteristics are attained, reliable insulation is assured and the winding can be realized in a reduced size.

7. 发明专利

DE3108161A1 未知
公开(公告)号：DE3108161A1
公开(公告)日：1982-01-21
申请号：DE3108161
申请日：1981-03-04
申请人： HITACHI LTD
发明人： MIKI ATSUSHI , MORI ETSUNORI , HOSHI MINORU , HIGAKI MASARU
IPC分类号： H01F27/28 , H01F27/34
摘要： A winding for a static induction apparatus such as a transformer, a reactor and the like comprises a plurality of interleaved coils each formed by winding an electrically insulated strand conductor in a radial spiral. The coils are stacked axially and electrically connected in series between a line terminal and another terminal such as a neutral terminal. The winding is divided into a plurality of blocks each including a plurality of ones of the interleaved coils. The number of turns of each coil belonging to the block on the other terminal side is decreased as compared with that of each coil belonging to the block located closer to the line terminal, to thereby reduce the series electrostatic capacitance of the coils stepwise from one to another block starting from the one located on the line terminal side. The distribution constant is thus decreased. Favorable surge withstanding characteristics are attained, reliable insulation is assured and the winding can be realized in a reduced size.

8. 发明专利

JPH0342584A DECIDING SYSTEM FOR INSULATION DETERIORATION OF ELECTRIC POWER SYSTEM 失效
公开(公告)号：JPH0342584A
公开(公告)日：1991-02-22
申请号：JP17782889
申请日：1989-07-10
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： KANAI MINORU , IWASHITA KIYOJI , HIGAKI MASARU , HAGA HIROSHI , DOBASHI HACHIRO , YAMASHITA TAKAHIRO , TORII HISANOBU
IPC分类号： G01R31/12 , G01R31/08 , H02H3/28
摘要： PURPOSE:To detect an insulation deterioration of electric power system with high sensitivity by obtaining admittances against ground of each phase in a section to be monitored and deciding the insulation deterioration of power system in the section to be monitored in accordance with these calculated values. CONSTITUTION:At first, outputs of zero-phase-sequence current sensors 15a, 16a, 17a are fetched and time system data for the zero-phase-sequence currents I0 at the output side of an electricity distributing and transforming station 1 are fetched to a computer 11, and amounts and directions of the current I0 of each feeder 12, 13, 14 are compared to decide whether the directions of currents I0 are different from a normal value and also the amounts are increased beyond a set level or not. When the detected values of current I0 do not exceed the set value, the process is continued, and if they exceed, held signals are outputted through each communication terminal 27, then the contents of memories 26 in each section are held and transferred to the computer 11 through the terminals 27 and a communication circuit 28. By the computer 11, a spectrum analysis for frequency is made for the transferred time series data to perform a processing to obtain the absolute values and the phases for every frequency. The processing for obtaining insulation resistances against ground and electrostatic capacitances against ground are performed in accordance with the above results.

9. 发明专利

JPH02110910A STATIONARY INDUCTION ELECTRIC APPARATUS 失效
公开(公告)号：JPH02110910A
公开(公告)日：1990-04-24
申请号：JP32403887
申请日：1987-12-23
申请人： HITACHI LTD
发明人： ENDO KAORU , SHIRANE TAKASHI , FURUKAWA SADAO , HIGAKI MASARU , HIRAISHI KIYOTO
IPC分类号： H01F27/18
摘要： PURPOSE:To obtain a small-sized and lightweight stationary induction electric apparatus by a method wherein mixed gas consisting of nitrogen gas and insulating gas is introduced into a tank, the bubblegenerating temperature of a perfluorocarbon solution is raised, the amount of generation of bubbles and the size of the bubbles are made small, and the lowering of the breaking strength of the perfluorocarbon solution is prevented. CONSTITUTION:In an insulating gas filled tank 1 containing a top-opened insulation container 2 in which an iron core 3 and a winding 4 wound around the leg of the iron core are housed and a liquid refrigerant is filled up, mixed gas consisting of nitrogen gas and insulating gas is introduced. For example, a perfluorocarbon solution is used as the above-mentioned liquid refrigerant 5, and the above-mentioned mixed gas is composed of 20% SF6 gas and 80% nitrogen gas. Besides, a heat exchanger 7 and a circulation pump 8 are arranged outside the airtight tank 1, and a liquid circulating system is composed of lead- out tubes 9 and 10. Consequently, as the lowering of the pressure of the surface of the perfuorocarbon solution can be prevented, the pressure in the bubbles generated from the solution does not drop, and the lowering of breaking strength of the solution can also be prevented.

10. 发明专利

JPS63146419A STATIONARY INDUCTION ELECTRIC 失效
公开(公告)号：JPS63146419A
公开(公告)日：1988-06-18
申请号：JP29232786
申请日：1986-12-10
申请人： HITACHI LTD
发明人： SHIRANE TAKASHI , YAMAGIWA TOKIO , SAITO TATSU , HIGAKI MASARU , HIRAISHI KIYOTO , KAWASHIMA KEIZABURO
IPC分类号： H01F27/12
摘要： PURPOSE:To easily manufacture a body partition chamber by forming the partition walls of the chamber which contains a core and a winding by securing insulating plates to supporting fittings secured continuously to the bottom and the sidewalls of a tank. CONSTITUTION:Partition walls 16 are formed by closely securing insulating plate 14 with bolts to supporting fittings 13 secured continuously to the bottom and he sidewalls of a tank 1. A body partition chamber 17 which contains a core 2 and a winding 3 is composed of the walls 16, and the bottom and the sidewalls of the tank 1, liquid 9 of insulating medium is filled in the chamber 17, and gas 8 of insulating medium is sealed in other partition chamber 18. A liquid feeding system 24 having a feed pump 23 is so provided as to connect a liquid circulating system 20 having a circulating pump 19 for cooling the liquid 9 of the chamber 19 through a cooler 21 and a reservoir 22 of the liquid 9 in the bottom of the chamber 18 to the system 20.

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