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31. 发明专利

JPH02250289A HIGH FREQUENCY HEATING DEVICE 失效
公开(公告)号：JPH02250289A
公开(公告)日：1990-10-08
申请号：JP7082389
申请日：1989-03-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ITO SEIJI , YAMAZAKI TAKAHIKO
IPC分类号： H05B6/78
摘要： PURPOSE:To accomplish a high frequency heating device having good effect of preventing leakage of electric waves by furnishing a metal plate arranged with a space to an electric wave sealing structure, and installing a plurality of specific metal couplings which couple this metal plate with the electric wave sealing structure, etc. CONSTITUTION:Metal couplings, i.e., motor cut-and-raise parts 13, are installed on a metal plate, i.e., motor mounting plate 10, which is arranged with a space reserved to an electric wave sealing structure and on which a motor 9 to rotate a shaft 3 is mounted, and thereby contacting with the electric wave sealing structure is achieved. The gap size (a) between the cut-and-raise parts 13 shall be substantially below a quarter wavelength of the high frequency wave used, and about the circumferential direction of the shaft 3, leakage of electric waves to outside is lessened by preventing the max. point in electric field distribution from intruding into the gap, while electric waves are shut off by the motor mounting plate 10 about the axial direction of the shaft 3. This embodies a high frequency heating device equipped with good effect of preventing leakage of electric waves.

32. 发明专利

JPH01318481A VISUAL TELEPHONE SYSTEM 失效
公开(公告)号：JPH01318481A
公开(公告)日：1989-12-22
申请号：JP15162588
申请日：1988-06-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KUDO HITOSHI , YAMASHITA HIDEHIRO , SHINANO TOSHIHARU , ITO SEIJI
IPC分类号： H04N7/14
摘要： PURPOSE:To enlarge or reduce the magnitude of an object and to suppress the partial deterioration of the sensitivity of the target of an image pickup tube by providing a circuit to simultaneously change the vertical directional scanning range and the horizontal directional scanning range of an electron beam to scan on the target of the image pickup tube in the same ratio, and automatically restoring the changed ranges to the maximum scanning ranges when a line is disconnected. CONSTITUTION:The vertical directional scanning range and the horizontal directional scanning range in which the electron beam scans on the target can be simultaneously changed in the same ratio by simultaneously changing the respective currents generated in a horizontal deflection circuit 7 and a vertical deflection circuit 8 in a scanning range control circuit 24. Thus, it becomes possible to continuously enlarge/reduce the magnitude of the object to be projected in according to necessity. Further, even when the electron beam is still converged for a standard state in the scanning range control circuit 24, if only the disconnection of the line is detected by a line status detecting part 25, the line is automatically restored to the standard state.

33. 发明专利

JPH05205386A MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH05205386A
公开(公告)日：1993-08-13
申请号：JP1104092
申请日：1992-01-24
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAWADA SOICHI , ITO SEIJI
IPC分类号： G11B21/16 , G11B19/00
摘要： PURPOSE:To obtain a highly reliable magnetic disk device without generating dust of flows caused by a loading pin brought into contact with a magnetic disk surface and occurring of the destruction and crash of data by retracting the cartridge arm of a negative pressure type slider to a loading position. CONSTITUTION:This device is provided with a power source circuit 16 for driving, a switch circuit 14 for switching the power sources between the driving power source circuit 16 and a normal operation period, a brake circuit 13 for stopping a spindle motor 11 for rotating the magnetic disk and a switching power source circuit 12 for operating the switch circuit 14 and the brake circuit 13. When the power supply is stopped, the switch circuit 14 is operated by the switching power source circuit 12, the cartriage arm 3 is retracted to the loading position by a power supplied from the driving power source circuit 16, the brake circuit 13 is operated, the spindle motor 11 is stopped, a locking mechanism is operated and the negative pressure slider is released from a floating state.

34. 发明专利

JPH0444678A MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH0444678A
公开(公告)日：1992-02-14
申请号：JP15366490
申请日：1990-06-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ITO SEIJI , FUKAKUSA MASAHARU
IPC分类号： G11B21/21 , G11B5/54
摘要： PURPOSE:To let a slider float on a magnetic disk well even when a dimension between respective parts is made different by comparing the size of a stored reproducing output with the size of a read reproducing output and transmitting a prescribed signal to a control means. CONSTITUTION:When a slider 3 enough approaches so as to float on a magnetic disk 6, the size of the reproducing output from a magnetic head to be inputted to a reproducing output comparing circuit 10 is larger than the size of the reproducing output stored in the internal memory of the reproducing output comparing circuit 10, and the reproducing output comparing circuit 10 transmits the signal to a controller 11. When the signal is inputted, the controller 11 immediately outputs a signal to stop the drive of a current generating circuit 7 to a time adjusting circuit 8 and a current value adjusting circuit 9 so that a flexure pressing member 4 can not be moved toward the magnetic disk 6 any more and that any current can not flow to the flexure pressing member 4.

35. 发明专利

JPH03207314A PRESSURE VESSEL AND MANUFACTURING PROCESS THEREOF 失效
公开(公告)号：JPH03207314A
公开(公告)日：1991-09-10
申请号：JP418090
申请日：1990-01-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： UEDA SHIGEKI , KODAMA SATOSHI , ITO SEIJI , MAKI MASAO , ISHII TAKAHITO , ISOYA MAMORU
IPC分类号： A47J27/08
摘要： PURPOSE:To make an attempt of improving the anti-pressure performance by conducting an ejection molding using heat-resistant thermal plastic resin for the resin portion of a pressure vessel to reduce the difference in hardened state between the inside and the surface of the vessel. CONSTITUTION:In a vessel body 1 materials to be heated are housed, and the open port of vessel 1 is closed with a lid body 3. These vessel body 1 and lid body 2 are formed with ejection molding of highly heat-resistant thermal plastic resin. As such synthetic fibers, engineering plastic with high heat- resistance such as GR-PET and PSF, and PPS can be used. In addition, a plumb 4 that works as pressure adjustment means is provided in the center of the lid body 3, and loosely mating with a nozzle 5 communicating with the inside of the vessel. Thus forming these bodies with ejection molding using thermal plastic resin reduces the difference in the hardened state between the inside and surface of the vessel to improve the pressure-resistant performance.

36. 发明专利

JPH02244587A HIGH-FREQUENCY HEATING DEVICE 失效
公开(公告)号：JPH02244587A
公开(公告)日：1990-09-28
申请号：JP6540789
申请日：1989-03-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ITO SEIJI , IDOMOTO SUSUMU
IPC分类号： H05B6/64 , F24C7/02
摘要： PURPOSE:To improve the cooling efficiency, to realize a compact size of the device, and to improve the convenience and the safety of use, by providing a cooling guide made of a synthetic resin so as to lead the cooling air to the high voltage electric parts sufficiently. CONSTITUTION:High voltage electric parts such as a high voltage transformer 11 loaded on an inverter base 7 are cooled by the air taken in from the outside by a propeller fan 2. To guide the cooling air, a cooling guide 16 made of a synthetic resin is provided, and the expanding component of the air flow by the propeller fan 2 is converted into the component in the axial direction to increase the cooling efficiency. Moreover, the cooling guide 16 is arranged to insulate and separate the high voltage electric parts on the inverter base 7 from the other parts, and the safety and the convenience of use are realized.

37. 发明专利

JPH01317222A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH01317222A
公开(公告)日：1989-12-21
申请号：JP15067388
申请日：1988-06-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ITO SEIJI
IPC分类号： G11B5/66 , G11B5/64 , G11B5/716 , G11B5/738
摘要： PURPOSE:To prevent lowering of the squareness ratio of the magnetic recording medium by respectively specifying the compsn. ratios of Cr of the 1st magnetic film and 2nd magnetic film formed on a nonmagnetic underlying film consisting of Cr. CONSTITUTION:The nonmagnetic underlying film made of Cr, the magnetic film 3a made of Co-Cr having =7at.% and =7at.%. The saturation magnetization is zero and the magnetic Co-Cr film is no longer a magnetic material if the ratio exceeds 30at.%. The squareness ratio is hardly changed if the ratio is confined at

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