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1. 发明专利

JPH0332785B2 失效
公开(公告)号：JPH0332785B2
公开(公告)日：1991-05-14
申请号：JP5714982
申请日：1982-04-05
申请人： HITACHI SEISAKUSHO KK , HITACHI KOKI KK
发明人： KONUMA SHIGEHARU , TAMAHASHI KUNIHIRO , HOSOYA AKIRA , TSUNODA ATSUSHI , MORI YASUKI , MORISHITA YASUSADA , HARUKI SHINICHI
IPC分类号： G03G5/00 , C22C21/00 , G03G5/06 , G03G5/08 , G03G5/10

2. 发明专利

JP2003139076A SCROLL TYPE VACUUM PUMP 审中-公开
公开(公告)号：JP2003139076A
公开(公告)日：2003-05-14
申请号：JP2001331221
申请日：2001-10-29
申请人： HITACHI KOKI KK
发明人： NEMOTO KENICHI , NAKAMORI KAZUAKI , HARUKI SHINICHI , SUZUKI TERUO
IPC分类号： F04C25/02 , F04C18/02 , F04C28/00 , F04C28/26 , F04C28/28 , F04C29/10
摘要： PROBLEM TO BE SOLVED: To provide a scroll type vacuum pump capable of automatically operating a gas ballast mechanism. SOLUTION: A solenoid valve 19 is arranged in a gas ballast introducing pipe 18, and is constituted so as to operate by interlocking with operation of a pump.

3. 发明专利

JP2002106481A SCROLL TYPE VACUUM PUMP 失效
公开(公告)号：JP2002106481A
公开(公告)日：2002-04-10
申请号：JP2000299024
申请日：2000-09-29
申请人： HITACHI KOKI KK
发明人： HARUKI SHINICHI , NAKAMORI KAZUAKI , NEMOTO KENICHI , OGURA MITSUO , SUZUKI TERUO , NOZAKI YASUSHI
IPC分类号： F04C23/00 , F04C18/02 , F04C25/02 , F04C29/00 , F04C29/12
摘要： PROBLEM TO BE SOLVED: To facilitate the change of a check valve and a seal area opposed thereto. SOLUTION: The portion including the check valve of a fixed scroll and the seal area is made to be a separate component capable of taking off from the fixed scroll.

4. 发明专利

JPH11190288A SCROLL TYPE VACUUM PUMP 失效
公开(公告)号：JPH11190288A
公开(公告)日：1999-07-13
申请号：JP35725597
申请日：1997-12-25
申请人： HITACHI KOKI KK
发明人： HARUKI SHINICHI , NOZAKI YASUSHI , SAKAZUME AKIO , OGURA MITSUO , SUZUKI TERUO
IPC分类号： F04C29/00 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To make it hard to rust a surface of a crankshaft and to prevent occurrence of fretting corrosion wear producing red rust colored abrasion powder by forming at least the surface of the crankshaft of a corrosion-resistant layer. SOLUTION: Air sucked from a suction port 12 is compressed between spiral laps 3a or 4a of a revolving scroll 2 and becomes the maximum pressure in a region near a crankshaft 5, and accordingly, moisture contained in the air sucked from the suction port 12 becomes thick in density or water droplets by compression. This highly moist air or these droplets are to be discharged from a dischage port 14, but in the case when sealing between fixed scrolls 3, 4 and the revolving scroll 2 is imperfect, leakage of the air occurs in spaces 13 and a space 15 and the highly moist air and the droplets flow in. Consequently, at least a surface of the crankshaft 5 is made a corrosion-resistant layer. Accordingly, it is possible to improve longevity of a bearing 8 life by preventing occurrence of fretting corrosion wear.

5. 发明专利

JPH04140495A ROTARY VACUUM PUMP 失效
公开(公告)号：JPH04140495A
公开(公告)日：1992-05-14
申请号：JP26287490
申请日：1990-09-28
申请人： HITACHI KOKI KK
发明人： SAKAZUME AKIO , HARUKI SHINICHI
IPC分类号： F04C25/02
摘要： PURPOSE:To evaporate water or a contaminative substance of acid, alkali, etc., dissolved in oil, so as to low suppress contamination of the oil by providing an air pump, driven by a vacuum pump driving motor, in a vacuum pump to supply air into the oil. CONSTITUTION:When the first stage rotor 17 is rotated by actuating a driving motor 12, air, steam, etc. are sucked from a suction pipe 9, extruded to the second stage cylinder 2 via an exhaust passage 19 and discharged by similar action to the outside of a case through an exhaust pipe 10. An air pump 14, driven by utilizing turning force of a rotary shaft 11, is provided in a vacuum pump thus obtained. Air, sucked by an air suction port 15 provided in a position higher than an level 6a of oil 6, is delivered into the oil 6 from an air delivery port via a delivery air path by actuating this air pump 14, and water and the other contaminative substance, dissolved in the oil 6, are evaporated in a process, in which the air becomes a bubble to rise, and discharged to the outside of the case 7 from the exhaust pipe 10.

6. 发明专利

JPH03132678A ELECTRONIC PHOTOGRAPHING TYPE PRINTER 失效
公开(公告)号：JPH03132678A
公开(公告)日：1991-06-06
申请号：JP27136789
申请日：1989-10-18
申请人： HITACHI KOKI KK
发明人： HARUKI SHINICHI , FURUYA YUJI
IPC分类号： G03G15/02 , G03G15/16
摘要： PURPOSE:To clearly perform printing immediately after the printing is restarted by providing a shielding means which shields between a corona discharger and a photosensitive material. CONSTITUTION:An endless belt 10 is driven with a motor at both an electrification part and a transfer part in the printing so as to be rotated at the same speed in the same direction as that of a photosensitive drum 1 as coming in contact with the photosensitive drum 1. Therefore, a part between a charger 2 comprised of the corona discharger, a transfer device 5 and the photosensitive drum 1 is shielded with the endless belt 10. Thereby, no activated material generated from the corona discharger arrives at the photosensitive drum 1 even after the printing is completed as a matter of course while the printing is being performed. In such a way, it is possible to prevent a print defect occurring such as a thin printed result at a time when the printing is restarted after the stoppage of the printing continues for prescribed time or more.

7. 发明专利

JPS6063370A APPARATUS FOR MANUFACTURING AMORPHOUS SILICON HYDRIDE 失效
公开(公告)号：JPS6063370A
公开(公告)日：1985-04-11
申请号：JP17172783
申请日：1983-09-16
申请人： HITACHI KOKI KK
发明人： HARUKI SHINICHI , FURUYA YUUJI , FURUYA TADAO
IPC分类号： C23C16/30 , C23C16/24 , C23C16/455 , G03G5/08 , G03G5/082 , H01L31/0248
摘要： PURPOSE:To improve the efficiency of manufacture of an alpha-Si:H film by restricting a region through which a reactive gas flows so as to inhibit a reaction in a region where the deposition of an alpha-Si:H film is unnecessary. CONSTITUTION:A reaction furnace is composed of a support 30 on which an alpha-Si:H film is deposited, a high-frequency electrode 20 placed around the support 30 so as to cause electric discharge, nozzles 50 for feeding a reactive gas to the gap between the support 30 and the electrode 20, and gas exhaust ports 80 which are symmetric with respect to the nozzles 50 about the center of the support 30. A barrier 230 is placed between the electrode 20 and the support 30 so as to restrict a region through which the reactive gas flows.

8. 发明专利

JP2002115676A OIL FREE SCROLL-TYPE VACUUM PUMP 失效
公开(公告)号：JP2002115676A
公开(公告)日：2002-04-19
申请号：JP2000311844
申请日：2000-10-12
申请人： HITACHI KOKI KK
发明人： SUZUKI TERUO , OGURA MITSUO , NAKAMORI KAZUAKI , HARUKI SHINICHI , NEMOTO KENICHI , NOZAKI YASUSHI
IPC分类号： F04C25/02 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To provide an oil free scroll-type vacuum pump capable of preventing high humidity gas sucked through a suction port from becoming water droplets inside the vacuum pump, reducing the wear of a chip seal, and suppressing the corrosion of a pump main body and having excellent durability. SOLUTION: A gas ballast introduction hole 17 for preventing water contained in the sucked gas from staying inside the vacuum pump is provided on a mirror plate face of a fixed scroll 2 within substantially three windings from a scroll lap outer peripheral side.

9. 发明专利

JP2000213475A SCROLL VACUUM PUMP 失效
公开(公告)号：JP2000213475A
公开(公告)日：2000-08-02
申请号：JP1611699
申请日：1999-01-25
申请人： HITACHI KOKI KK
发明人： HARUKI SHINICHI , SAKAZUME AKIO , SUZUKI TERUO , OGURA MITSUO , NOZAKI YASUSHI
IPC分类号： F04C25/02 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To keep sealing between tip seals and grooves for the tip seals for a long time in a scroll vacuum pump adopting the tip seals. SOLUTION: A sectional area of each of tip seals 2b, 3b, 4b has such a trapezoidal form that each of lines faced to mirror plates 2c, 3c, 4c is shorter than each of lines faced to front grooves 2d, 3d, 4d of spiral scroll laps. The tip seals 2c, 3c, 4c are so attached as to form angles less than 90 degrees prepared by the line connecting the spiral outer ends of the lines faced to the front grooves 2d, 3d, 4d of the spiral scroll lap to the lines faced to the mirror plates 2c, 3c, 4c, and the lines faced to the grooves 2d, 3d, 4d. At least two unadherable tip seals 2b, 3b, 4b are arranged on the grooves 2d, 3d, 4d on the front of the spiral scroll lap. These means may be adopted together.

10. 发明专利

JPS6067957A ELECTROPHOTOGRAPHIC SENSITIVE BODY CONSISTING OF AMORPHOUS SILICON 失效
公开(公告)号：JPS6067957A
公开(公告)日：1985-04-18
申请号：JP17578383
申请日：1983-09-22
申请人： HITACHI KOKI KK
发明人： FURUYA YUUJI , FURUYA TADAO , HARUKI SHINICHI
IPC分类号： G03G5/08 , G03G5/14
摘要： PURPOSE:To prevent the deterioration in the characteristic of an amorphous silicon film owing to adsorption of gas and to assure a printing state which is stable for a long period of time as an electrophotographic sensitive body by coating a silicone resin at

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