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1. 发明专利

JP2001222837A OPTICAL HEAD AND OPTICAL INFORMATION REPRODUCING DEVICE USING IT 失效
公开(公告)号：JP2001222837A
公开(公告)日：2001-08-17
申请号：JP2000032732
申请日：2000-02-04
申请人： HITACHI LTD , HITACHI MEDIA ELECTRON KK
发明人： ARAI NOBUO , ONISHI KUNIKAZU , SUENAGA HIDEO
IPC分类号： G11B7/135
摘要： PROBLEM TO BE SOLVED: To provide an optical head and an optical disk device that are simply structured for mass-productivity and that facilitate miniaturization and light- weight, by reducing a working distance between a collimator lens and a detecting lens. SOLUTION: The collimator lens in the optical system of the head is constituted of meniscus type lenses whose center of curvature is all on a semiconductor laser side, and/or the detecting lens in the optical system of the head is constituted of meniscus type lenses whose center of curvature is all on a photodetector side. The optical head of this invention is mounted on an optical disk device or a magneto-optical disk device.

2. 发明专利

JP2004086651A System and product for controlling disposal of product 有权
公开(公告)号：JP2004086651A
公开(公告)日：2004-03-18
申请号：JP2002248049
申请日：2002-08-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ARAI NOBUO , SUDO SHIGEYUKI
IPC分类号： G06Q50/00 , G06Q50/26 , G08B21/24 , G08B25/10 , H04W4/04 , G06F17/60 , H04Q7/34
摘要： PROBLEM TO BE SOLVED: To provide a system capable of further contributing to the prevention and suppression of unlawful dumping. SOLUTION: A communication module 2 is buried in an electronic oven 1. The electronic oven 1 comprises the product information on the electronic oven 1 and user information, and acquires the information on the present position of the electronic oven 1. The communication module 2 emits a warning to users based on the user information in specified times. When the use state of the electronic oven 1 is not improved thereafter, the module sends unlawful dumping information including the product information and present position information to a monitoring center 3. Based on the unlawful dumping information, and regional information and customer information held by the center, the monitoring center 3 determines whether unlawful dumping is performed or not and, when the center determines to be unlawfully dumped, specifies a person who performed the unlawful dumping, and notifies a government office concerned to take a legal measure. COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2000215478A OBJECT LENS DRIVING DEVICE 失效
公开(公告)号：JP2000215478A
公开(公告)日：2000-08-04
申请号：JP1396999
申请日：1999-01-22
申请人： HITACHI LTD
发明人： ARAI NOBUO , MORI HIROMITSU
IPC分类号： G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide an optical disk device or an optical magnetic disk device which is easily miniaturized, made thinner, and reduced in weight, and has an excellent servo characteristic, by increasing rigidity in the rolling directional of a moving part comprising an object lens, a lens holder, a focusing coil, tracking coil, and a small substrate in an object lens driving device. SOLUTION: On the side of a fixing base plate 58 for fixedly supporting end parts of conductive suspension members 56 supporting a moving part in cantilever comprising an object lens 51, a lens holder 52, a focusing coil 53, a tracking coil 54, etc., rigidity control plates 3 are arranged, which are fixedly bonded to the conductive suspension members 56 and not fixedly bonded to the fixing base plate 58. Moreover, a visco-elastic material is filled in the clearance parts between the rigidity control plates 3 and the fixing base plate 58.

4. 发明专利

JPH11203604A MAGNETO-OPTICAL RECORDING MAGNETIC HEAD 失效
公开(公告)号：JPH11203604A
公开(公告)日：1999-07-30
申请号：JP279098
申请日：1998-01-09
申请人： HITACHI LTD
发明人： ARAI NOBUO , OKAMOTO TOMOMI , ITO MASAMICHI
IPC分类号： G11B11/10 , G11B5/02 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To invert a magnetic field at high speed and with high frequency waves by making a driving current for obtaining a required bias magnetic field flow through a magnetic head being at a position corresponding to the irradiation position of a laser beam while changing over it to make the driving current and a heating quatity smaller. SOLUTION: A magneto-optical recording magnetic head 20 is connected to a changeover circuit in order to operate it. At the time of an overwrite operation, a track 20b being in the magnetic head 20 which is at the same position as that of a laser spot 6 is specified with a position specifying circuit 34 and the changeover switch SW is operated and also a laser is operated with the light quantity at the time of recording. Consequently, a current for generating a bias magnetic field having a proper intensity corresponding to a recording signal 35 is made to flow through the magnetic heads 20 and the recording signal 35 is recorded on a magneto-optical disk 11. Thus, a high speed overwrite is made possible by making the required driving current flow through the magnetic head being at the position corresponding to the irradiation position of the laser beam while changing over it in this manner.

5. 发明专利

JPH0845015A MAGNETIC HEAD 失效
公开(公告)号：JPH0845015A
公开(公告)日：1996-02-16
申请号：JP18104494
申请日：1994-08-02
申请人： HITACHI LTD
发明人： ARAI NOBUO , MIURA YOSHITSUGU , KAWANO KANJI , INADA KENKICHI
IPC分类号： G11B5/133 , G11B5/187
摘要： PURPOSE:To obtain a good traveling characteristic even on a magnetic tape having a very smooth surface and also to obtain good contact with the tape. CONSTITUTION:Projecting and recessed parts of a height of H=2-50nm are provided at intervals of Ph

6. 发明专利

JPH07326027A HEAD CYLINDER 失效
公开(公告)号：JPH07326027A
公开(公告)日：1995-12-12
申请号：JP11981894
申请日：1994-06-01
申请人： HITACHI LTD
发明人： TANAKA YASUTO , ARAI NOBUO , KAWANO KANJI
IPC分类号： G11B5/52 , G11B15/61
摘要： PURPOSE:To lessen the danger of head damage at the time of handling, such as assembling and transporting, by covering part of a cylinder with a cover. CONSTITUTION:This head cylinder includes an upper drum 1, a lower drum 2, a magnetic tape guide line 3, a magnetic head 4, the cover 5 fixed to this lower drum 2, a magnetic tape 6, a pass port 7 for this magnetic tape 6, inclined pins 8, 8' and a shaft 9. The magnetic head 4 is mounted at the upper drum 1 and rotates together with the upper drum 1 around the shaft 9. The magnetic tape 6 is made to travel at an adequate angle with the cylinder by a tape guide line 3 disposed on the lower drum 2 and inclined pins 8, 8'. The upper and lower drums 1, 2 are provided with the cover 5 having the tape passage port 7 having the width larger than the width of the magnetic tape 6 and, therefore, the tape 6 is pressed to the cylinder without hindrance by the cover 5. In addition, the danger of the damage of the magnetic head 4 at the time of handling is lessened.

7. 发明专利

JPH06223342A ROTARY MAGNETIC-HEAD DEVICE 失效
公开(公告)号：JPH06223342A
公开(公告)日：1994-08-12
申请号：JP1053093
申请日：1993-01-26
申请人： HITACHI LTD
发明人： TSUCHIYA TOSHIO , ARAI NOBUO , KAWANO KANJI
IPC分类号： G11B5/53
摘要： PURPOSE:To obtain a rotary magnetic-head device having a structure wherein the S/N ratio of a recorded and replayed signal is not degraded and a gap in a head which records and replays a signal is not stuffed with a foreign body. CONSTITUTION:In a magnetic recording and playback apparatus, magnetic heads 21, 22 are attached to the circumference of a rotary drum 1, they come into sliding contact with a magnetic tape, and a signal is recorded and replayed. It is featured that at least one pair of opposite magnetic-tape sliding contact bodies 41, 42 are arranged at the circumference of the rotary drum 1 and that a foreign body is introduced into gaps in the sliding contact bodies.

8. 发明专利

JPH0520636A THIN-FILM MAGNETIC HEAD 失效
公开(公告)号：JPH0520636A
公开(公告)日：1993-01-29
申请号：JP19510791
申请日：1991-07-10
申请人： HITACHI LTD
发明人： KAWANO KANJI , SAITO MASAKATSU , ARAI NOBUO , TSUCHIYA TOSHIO , MIURA YOSHITSUGU , AOKI SHIGEO
IPC分类号： G11B5/31
摘要： PURPOSE:To improve the tape sliding characteristics of the thin-film magnetic head which is formed with a soft magnetic metallic film as a main magnetic core on a substrate material and is narrower in the width of this substrate material corresponding to a tape than the tape sliding width. CONSTITUTION:The width W2 of the substrate exposed on a tape-sliding surface is set narrower than the tape sliding width W1 and the length L1 in the traveling direction of the tape is set shorter than the length L of the head to be the tape-sliding surface packed with a nonmagnetic material 4 around this substrate. The dislodgment of the magnetic components of the tape by the contact of the end face of the head and the tape during the traveling of the tape is prevented and the consequent generation of a drop-out is obviated. The thin-film magnetic head having a stable and good tape traveling characteristic is thus obtd.

9. 发明专利

JPH0337818A ROTARY MAGNETIC HEAD ASSEMBLY 失效
公开(公告)号：JPH0337818A
公开(公告)日：1991-02-19
申请号：JP17178189
申请日：1989-07-05
申请人： HITACHI LTD
发明人： ABE MITSUO , TSUCHIYA TOSHIO , ARAI NOBUO , HISATOMI MASUMI , ZAMA HIDEO
IPC分类号： G11B5/11 , G11B5/53
摘要： PURPOSE:To obtain satisfactory tape touch in each magnetic head and to reduce crosstalk between the magnetic heads by providing a screen shape partition arranged between adjacent magnetic heads, and arranging each magnetic head in a housing room between the partitions by parting spatially. CONSTITUTION:A large number of magnetic heads 1 are mounted on a rotary cylinder 3, and the partition 5 is provided at the boundary of each magnetic head 1, and the partition 5 is comprised of a radiant blade part 51 and a connecting part 52 which connects them integrally. Since each head 1 is housed in an almost sealed housing room except for a tape confronting side, no air blowoff function occurs, and a negative pressurizing state is preferably set, and a tape is attracted to surely keep contact with the head. Such state can be decided with only the shape of the partition 5 i.e. the shape of the housing room 7 not depending on the number, the shape, and the arranging gap, etc., of heads. In such a way, the tape touch of each head can be maintained satisfactorily, and the crosstalk between the heads can be reduced.

10. 发明专利

JPH0271414A THIN-FILM MAGNETIC HEAD 失效
公开(公告)号：JPH0271414A
公开(公告)日：1990-03-12
申请号：JP22234688
申请日：1988-09-07
申请人： HITACHI LTD
发明人： ARAI NOBUO , KISHIMOTO SEIJI , ONO HIROAKI , AKAI HIROSHI , YONEYAMA TOMOKO , MORII TOSHIE
IPC分类号： G11B5/31 , G11B5/02 , G11B5/17
摘要： PURPOSE:To obtain the title head with little induced noise which is suitable for the high-density recording of a VTR, etc., in a mounted state by crossing a wiring pattern on a terminal board at least once. CONSTITUTION:A wiring pattern 8 crosses at least once on a terminal board 5 and the sum of the effective areas of an oblique line part 7 surrounded by the wiring pattern 8 and a coil 3 incorporating a magnetic core 2 to the induced noise by an extraneous wave is nearly equal to the effective area of the other oblique line part 9 to the induced noise by the extraneous wave. The polarity of the induced noise by the extraneous wave generated in the oblique line part 7 surrounded by the coil 3 incorporating the magnetic core 2 on a thin-film magnetic head chip and the oblique line part 7 surrounded by the wiring pattern 8 is reverse to that of the induced noise generated in the other oblique line part 9 surrounded by the wiring pattern 8. Consequently, they cancel each other and the interference of the extraneous wave can be completely canceled. Thus, the one with little induced noise which is suitable for the high-density magnetic recording of the VTR, etc., in the mounted state can be obtained.

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