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51. 发明专利

JPH01204211A REVOLVING HEAD DEVICE 失效
公开(公告)号：JPH01204211A
公开(公告)日：1989-08-16
申请号：JP2657588
申请日：1988-02-09
申请人： HITACHI LTD
发明人： KAZAMA SABURO , KAWACHI MASANORI , NARISHIMA SEIICHI , OZAKI SHINJI , ONO MASAHARU , YAMASHITA TOMOHITO
IPC分类号： F16C32/04 , G11B5/52
摘要： PURPOSE:To obtain a stable non-contact bearing force of high centripetalism by providing a bearing to generate magnetic repulsion as the bearing means of a revolving part. CONSTITUTION:An annular single magnetic pole magnet 16 is provided on the lower surface of a yoke 17 in the lower surface of a fixed piece 14 and a same magnet 15 is provided with facing to the magnet 16 in a yoke 18 of the upper surface of a revolving disk 3 as well. Then, the facing magnetic pole surfaces of the magnets are the same magnetism. A same magnet 20 is provided in a yoke 21 in the bottom part of a lower side cylinder 4 and a same magnet 19 of single magnetism is provided with facing to the magnet 20 in a yoke 22 between a thrust dynamic pressure bearing surface 26 and the fitting part of a rotator yoke 11 as well. Then, the facing magnetic pole surfaces of the magnets are same magnetism. Thus, since the rotating part is borne by the magnetic repulsion, a stable non-contact bearing of the high centripetalism can be obtained.

52. 发明专利

JPH01107302A ROTARY HEAD DEVICE 失效
公开(公告)号：JPH01107302A
公开(公告)日：1989-04-25
申请号：JP26381187
申请日：1987-10-21
申请人： HITACHI LTD
发明人： ONO MASAHARU , KAZAMA SABURO , YAMASHITA TOMOHITO
IPC分类号： G11B5/52 , G11B5/02 , G11B5/53 , G11B33/12
摘要： PURPOSE:To make a device small in size and to enable it to correspond to multi-channel by making a rotary transformer transmitting the signal of the magnetic head of a rotary body structure, whose outer circumference the magnetic head is loaded and fixed to, the cylindrical form whose axis is the same state as a central axis. CONSTITUTION:The rotary transformer 10 is made to be the cylindrical form. Therefore, the transformers whose form are the same can be used in each channel for transmitting the signal of the rotary transformer 10 and transmission characteristic can be uniformed between the channels. Besides, in case of making it for the multi-channel, it can correspond to that by accumulating the transformers in the concentric cylindric state. By forming a ditch 1c at the central axis 1a and using it, the external diameter of the rotation supporting part of the inner ring of a bearing 1 can be made small. Besides, by combining it with the cylindric rotary transformer 10, the device can be made small in size.

53. 发明专利

JPS6462810A ROTARY HEAD DEVICE 失效
公开(公告)号：JPS6462810A
公开(公告)日：1989-03-09
申请号：JP21918187
申请日：1987-09-03
申请人： HITACHI LTD
发明人： KAZAMA SABURO , ONO MASAHARU , YAMASHITA TOMOHITO
IPC分类号： G11B5/52 , G11B5/53 , G11B21/04 , H02K29/00
摘要： PURPOSE:To attain the miniaturization, electric power saving and high performance by forming a stator coil by a superconductive material, by providing a means to detect a back electromotive force to occur in a stator coil as a position signal and providing a supporting means to support a fixed part with a magnetic repulsive force at a motor for rotating and driving directly combined to the rotating body structure to mount a head. CONSTITUTION:The flat stator of a motor is provided between the magnetic pole surface of a stator magnet 5 and a rotation yoke 13, and a stator coil 7 composed of a superconductive material and a floating force generating coil 12 composed of the superconductive material in the same way are laminated. After activation, when the number of rotations arrives at a prescribed value of above, the motor detects the back electromotive force of the stator coil 7, and thus, is switched to a direct current brushless motor driving system to control and feed a coil current to the stator coil 7. By the rotation magnetic field from magnets 5, 18 and 18', a shorting induced current flows and thus, the repulsive force occurs and floats at the magnets 5, 18 and 18'. Consequently, in the steady rotation condition, a rotating part is completely in the non-contact condition for the fixed part both in a thrust direction and in a journal direction and in a low friction supporting condition.

54. 发明专利

JPS6057519A THIN FILM MAGNETIC HEAD 失效
公开(公告)号：JPS6057519A
公开(公告)日：1985-04-03
申请号：JP16336383
申请日：1983-09-07
申请人： HITACHI LTD
发明人： KONISHI KATSUO , ABE MITSUO , TAMURA MITSUHARU , ONO MASAHARU
IPC分类号： G11B5/255 , G11B5/31
摘要： PURPOSE:To wear a metallic thin film and a nonmagnetic base plate in the same degree by inclining the end face of the metallic thin film at an angle to the lengthwise direction of a recording track and arranging the end faces of the nonmagnetic base plate before and after this end face of the metallic thin film and making the hardness of this base plate higher than that of the metallic thin film. CONSTITUTION:A metallic thin film 1 has both sides adhered to the nonmagnetic base plate 2 and is so arranged that the thin film 1 is inclined at an angle to the plane which is vertical to a magnetic tape sliding face and is parallel with the lengthwise direction of the recording track. Consequently, the width of the thin film 1 in the direction of an arrow (a) is smaller than that of a conventional thin film, and the wear of the thin film 1 is reduced because both sides of the part of the thin film 1 which faces the magnetic tape are supported by the base plate 2. The hardness of the base plate 2 is made 1.5 times as high as that of the thin film 1, and thus, the wear rates of the thin film 1 and the base plate 2 are equal to each other.

55. 发明专利

JPS59101057A Rotary magnetic head device 失效
标题翻译：旋转磁头设备
公开(公告)号：JPS59101057A
公开(公告)日：1984-06-11
申请号：JP20937782
申请日：1982-12-01
申请人： Hitachi Ltd
发明人： ONO MASAHARU , OZAKI SHINJI
IPC分类号： G11B15/61
CPC分类号： G11B15/61
摘要： PURPOSE:To attain ease of adjustment of a guide roller by arranging a taper exerting a force moving a tape in the direction of a fixed cylinder tape guide stage on a tape running plane. CONSTITUTION:A fixed cylinder is tapered several mum so that its diameter is reduced as it goes toward the direction of a tape running plane 12b and a tape guide stage 12a. Since the tape has a tension, the tape 3 moves in the direction where the diameter is smaller and the component of force along the tapered direction shifts the tape in the direction of the guide stage 12a. Then, the tape 3 is run on the guide stage 12a at all times. Thus, in running the tape 3 adhered on the tape guide stage 12a of the fixed cylinder 12, the tape 3 is run adheredly on the tape guide stage 12a of the fixed cylinder 12 without exerting excessive force on the tape 3 by adjusting tape running on the guide rollers 4, 5.
摘要翻译：目的：为了使导向辊的调整容易，通过在带子运行平面上施加沿固定的气缸导向台的方向移动带的力。构成：一个固定的圆柱体是几毫米的锥形，使得它的直径随着朝向带运行平面12b和导带台12a的方向而减小。由于胶带具有张力，胶带3沿直径较小的方向移动，并且沿着锥形方向的力分量使胶带沿导向台12a的方向移动。然后，磁带3始终在引导台12a上运行。因此，在将粘附在固定筒12的带引导台12a上的胶带3运行时，带3在固定筒12的带引导台12a上附着地运行，而不会通过调节带子上的磁带而对带3施加过大的力导辊4,5。

56. 发明专利

JPH1058804A THERMAL TRANSFER RECORDING APPARATUS 失效
公开(公告)号：JPH1058804A
公开(公告)日：1998-03-03
申请号：JP21975196
申请日：1996-08-21
申请人： HITACHI LTD
发明人： OZAWA NAOHIRO , ONO MASAHARU , TAKADA MASAMI
IPC分类号： B41J17/22 , B41J17/32 , B41J33/14
摘要： PROBLEM TO BE SOLVED: To obtain a locking apparatus for positively holding an ink cartridge containing an ink sheet to a memory apparatus in a thermal transfer recording apparatus. SOLUTION: In a thermal transfer recording apparatus, a recording paper 5 is fed by a roller 304, and a thermal transfer is effected by a thermal head superposed with an ink sheet contained in an ink cartridge 6. The ink cartridge 6 is inserted in a direction orthogonal to a carriage direction of the recording paper while pushing up a taperlike cam part 830 of a lock apparatus 8. The lock apparatus 8 is urged in a downward direction around a shaft 810 by an action of a leaf spring 840. When the ink cartridge 6 is inserted to a recording position, a front surface wall 622 moves over the cam part 830, the lock apparatus 8 moves downward and the lock member 820 holds the cartridge 6.

57. 发明专利

JPH09309244A THERMAL TRANSFER RECORDER 失效
公开(公告)号：JPH09309244A
公开(公告)日：1997-12-02
申请号：JP12683196
申请日：1996-05-22
申请人： HITACHI LTD
发明人： OZAWA NAOHIRO , ONO MASAHARU , NAKANO TETSUO , SHIRAISHI MIKIO , TAKADA MASAMI
IPC分类号： B41J13/00 , B41J2/32 , B41J13/02 , B41J17/32 , B41J25/304
摘要： PROBLEM TO BE SOLVED: To make jammed recording papers easy to be exluded while a recorder is miniaturized by a method wherein a pinch roller driving cam is enabled to be arranged at a center of the recorder. SOLUTION: A driving cam for a thermal head 200 and a pinch roller 211 area arranged below a capstan roller 210 by making its cam surface normal to a driving surface of the thermal head 200. Driving for raising and lowering of the pinch roller 211 and the thermal head 200 is performed with a mode slider 265 linked with the cam. A slanting part 265c is provided at a step in the slider 265. An opposed side to an insertion opening of an ink cartridge 6 of a carrying passage of recording paper under a platen roller 212 is narrowed with the slanting part 265c when the thermal head 200 rises to the uppermost.

58. 发明专利

JPH08295057A THERMAL RECORDER 失效
公开(公告)号：JPH08295057A
公开(公告)日：1996-11-12
申请号：JP10230095
申请日：1995-04-26
申请人： HITACHI LTD
发明人： NAKANO TETSUO , OTSUKA YASUO , TAKADA MASAMI , ONO MASAHARU
IPC分类号： B41J11/00 , B41J2/325 , B41J11/04 , B41J13/02
摘要： PURPOSE: To facilitate enlargement of a photographic printing area by a method wherein a pinching part between a driving roller and a driven roller of a paper feeder is so constituted as to be arranged outside in the width direction of a platen, and at least a part of the platen enters between the pinching part of the driving roller. CONSTITUTION: A recording medium is pinched with a driving roller 103 and a driven roller which have a pinching part at their both edges, and the recording medium is carried by rotation of the driving roller 103. Besides, the recording medium is pinched between a thermal head 102 and a platen 101. Then, it is heated with the thermal head 2, and recording is carried out. In such a thermal recorder, a distance between pivot centers of the platen 101 and the driving roller 103 is made less than a sum of a radius of the platen 101 and a radius of the driving roller 103. The platen 101 is so arranged as to enter into the driving roller 103. A distance L1 between the driving roller 103 and a heating element of the thermal head 102 is shortened thereby, and an image blank space is lessened to attempt enlargement of a photographic printing area.

59. 发明专利

JPH06259852A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH06259852A
公开(公告)日：1994-09-16
申请号：JP4627993
申请日：1993-03-08
申请人： HITACHI LTD
发明人： MASUDA NORIAKI , FUSE KENJI , ABE FUKUOKU , OKAMOTO TOMOKI , OGIJI KENJI , KAKU NOBUYUKI , ONO MASAHARU
IPC分类号： G11B15/675
摘要： PURPOSE:To improve operation convenience by opening a lid when a cassette is not in existence, ejecting the cassette when the cassette is in existence but a tape is not traveled and emitting light and a sound from a warning means when the cassette is in use. CONSTITUTION:When the cassette is made to approach a VTR 1 by hand, this approach is detected by a detecting means 4 using infrared rays, supersonic waves and magnetic force lines. When another cassette is housed in the VTR 1 under a tape stopping mode, a protective member 6 is moved downward to eject the cassette. When another cassette is already housed in the VTR 1 at the time of inputting a signal of the means 4 to a control means 2, whether the tape is travelling or stopped is moreover discriminated. When the tape is under traveling, a warning is issued. When the tape is in stopped state, the cassette housed in the VTR 1 is ejected. If this tape is desired to be replaced with other one under this tape traveling mode, a tape traveling stopping operation is performed by hand to cope with this action.

60. 发明专利

JPH0660305A ROTARY HEAD DEVICE 失效
公开(公告)号：JPH0660305A
公开(公告)日：1994-03-04
申请号：JP21047192
申请日：1992-08-06
申请人： HITACHI LTD
发明人： ONO MASAHARU , MASUDA NORIAKI , KAKU NOBUYUKI , TAKEDA KATSUMI
IPC分类号： G11B5/02
摘要： PURPOSE:To prolong the service life of the device even at a high-speed rotation by providing a conductive member on one end surface of a rotary shaft and providing a contacting part where a brush is brought into contact with the rotary center of the end surface of the rotary shaft. CONSTITUTION:When a recording is made on a magnetic tape, the tape is wound to the outer periphery of a rotary magnetic head having an angle along a guiding stage 9 and when a rotary shaft 6 is rotated and a rotary drum 1 is rotated via a disk 7, a magnetic head 3 fixed on the drum 1 is slid on the magnetic tape. At this time, by a rotary transformer 11b at a fixed drum 2 side, a recording signal is received by the magnetic tape from a video signal processing circuit, sent to a rotary transformer 11a at the drum 1 side, outputted to the magnetic head 3 via a signal amplifier 12 and recorded on the magnetic tape. At this time, a fixing brush 15a connected to the + side of a power source and a fixing brush 15b connected to the - side of the power source are brought into contact with conductive members 13a and 13b in the vicinity of the central shaft of the rotary shaft 6 and a power is sent to the signal amplifier 12. Thus, the connection of a slip ring to the rotary shaft 6 is made unnecessary and a compact and light head with a long service life even at a high-speed rotation is provided.

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