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1. 发明专利

JPH11126398A RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH11126398A
公开(公告)日：1999-05-11
申请号：JP23678598
申请日：1998-08-24
申请人： HITACHI LTD , HITACHI MAXELL
发明人： KAKU NOBUYUKI , ONO MASAHARU , MAEHARA KATSUO , INOUE MOTOHISA
IPC分类号： G11B23/087 , G11B15/675
摘要： PROBLEM TO BE SOLVED: To provide a recording and reproducing device using a tape cassette with a reference hole and a reference plane for positioning suitable for improving positioning accuracy is used, and permitting to cope with a tape cassette with a different thickness. SOLUTION: This recording and reproducing device has a positioning member 13 comprising a height determining part for positioning the height in the direction of thickness of a tape cassette 10 case and a plane positioning part 13b for determining a position in a plane in parallel with the bottom plane of the case. When a tape cassette 10 with a thick thickness is inserted, the above- mentioned height determining part is abutted on a reference plane which is approximately parallel to the bottom plane of the case and arranged so as to be apart inside by a predetermined distance, and when a tape cassette 10 with a thin thickness is inserted, it is abutted on the bottom plane, and thereby it becomes possible to cope with a tape cassette with a different thickness by the same mechanism.

2. 发明专利

JPH1166786A CARTRIDGE ADAPTER AND CARTRIDGE USED THEREFOR 失效
公开(公告)号：JPH1166786A
公开(公告)日：1999-03-09
申请号：JP22911797
申请日：1997-08-26
申请人： HITACHI LTD
发明人： ONO MASAHARU , NAGAI KIYUUICHIROU , NOMURA TAKEYUKI
IPC分类号： G11B23/00 , G11B23/023
摘要： PROBLEM TO BE SOLVED: To enable the storing and mounting of a small disk in a disk device in the state housed in a cartridge similarly to the case of a normal disk by preparing a means for positioning and fixing the small cartridge as a cartridge adapter and forming the outside shape so as mountable in the disk device. SOLUTION: For mounting and fixing the small cartridge 1 in the cartridge adapter 6, an upper shutter 8a of the cartridge adapter 6 is opened, and the small cartridge 1 is inserted obliquely into the direction A against the cartridge adapter 6, so that a reference hole, reference pins 7e, 7f for mounting, and protruding parts 7k, 7l for mounting the small cartridge are engaged. Next, the small cartridge 1 is pressed down in the direction B and fixed by small cartridge fixing members 9a, 9b. Then, the upper shutter 8a is closed after the shutter of the small cartridge 1 is opened by a shutter fixing member.

3. 发明专利

JPH10202927A THERMAL TRANSFER RECORDER AND CAM POSITION DETECTOR 失效
公开(公告)号：JPH10202927A
公开(公告)日：1998-08-04
申请号：JP1399297
申请日：1997-01-28
申请人： HITACHI LTD
发明人： OZAWA NAOHIRO , ONO MASAHARU , OTSUKA YASUO , SHIMIZU AKIRA
IPC分类号： B41J25/304 , B41J2/32 , B41J2/325
摘要： PROBLEM TO BE SOLVED: To simplify the positional adjustment of platen roller and thermal head by making substantially U-shaped grooves to be fitted with a platen roller shaft at the opposite ends of a heat sink and disposing a thermal head and a pinch roller drive cam at the lower part of a capstan roller. SOLUTION: A thermal head 200 is secured to a heat sink 203 which is then secured to a head arm 252 thus securing the thermal head 200 to the head arm 252. U-shaped grooves 203a for positioning a platen roller 212 oppositely to a capstan roller, pins 203 for regulating the position of the head arm 252 in the main scanning direction of head, and screw holes 203c are provided on the opposite outer sides of the heat sink 203 in the main scanning direction of head. On the other hand, the head arm 252 is provided with a positioning hole 252 to be engaged with the pin 203b and a through screw hole 252d in order to secure the heat sunk 203 an the head arm 252 by means of screws.

4. 发明专利

JPH09254488A THERMOSENSIBLE RECORDING APPARATUS, AND SUPPORTER FOR THERMAL HEAD 失效
公开(公告)号：JPH09254488A
公开(公告)日：1997-09-30
申请号：JP6587896
申请日：1996-03-22
申请人： HITACHI LTD
发明人： NAKANO TETSUO , OZAWA NAOHIRO , ONO MASAHARU , TAKADA MASAMI , OKUMIYA SEIJI
IPC分类号： B41J25/312 , B41J2/32 , B41J25/316
摘要： PROBLEM TO BE SOLVED: To improve the uniformity of contact pressure and accuracy of contact position, in particular, to the supporter recording surface of a thermal head in respect of a thermosensible recording apparatus. SOLUTION: The thermosensible recording apparatus is such that a recording medium is held by a thermal head 20 and an opposed platen 10 to be recorded through heat, and the thermal head 20 is disposed in contact with a predetermined position of the platen roll 10 by a bearing member 17 fitted in the rotating shaft 15 of the platen roll 10 via a coupling member 21. The support shaft 25 of the thermal head 20 for coupling the thermal head via an arm 23 is guided to the long hole to swing about its central part so as to control the contact pressure relative to the platen toll 10 of the thermal head 20. The arm 23 can wove to the coupling hole 230 direction made in parallel with the normal line direction at the contact point of the thermal head 20 and platen roll 10, so that the thermal head 20 is controlled in its contact position with the platen roll 10 through its shift to the tangential direction.

5. 发明专利

JPH08329570A TAPE GUIDE PART ON DRUM IN ROTARY MAGNETIC HEAD DEVICE AND PROCESSING METHOD THEREOF 失效
公开(公告)号：JPH08329570A
公开(公告)日：1996-12-13
申请号：JP13073495
申请日：1995-05-29
申请人： HITACHI LTD
发明人： ONO MASAHARU , MASUDA NORIAKI , TAKEDA HIDEKAZU , INOUE ATSUSHI , MASUOKA NOBUO , KATONO NOBORU , IBE MAKOTO , HIRAYAMA KUNIAKI , WATANABE KIYOKAZU
IPC分类号： G11B15/61
摘要： PURPOSE: To provide a chamfered part in a large amt. of chamfering on a part of a chamfered part of a guide step for a magnetic tape for the purpose of smoothly settling the magnetic tape to the guide step on a lower drum when the tape is wound or unwound. CONSTITUTION: The guide step 4 on the lower drum is formed with a chamfered part in a small amt. of chamfering (not shown in the figure), whereas a part swollen in an upper part of the guide step 4 due to the minutely undulating guide step 4 is provided with the chamfered part 8 in a large amt. of chamfering at a prescribed inclined angle. Even when an lower edge part of the magnetic tape is mounted on the chamfered part 8 to be deviated from the guide step 4 in the case of loading and unloading the magnetic tape into and from the rotary magnetic head device, the bend of the magnetic tape is too small to incur damage. Then, since the width of the guide step 4 in the chamfered part 8 is narrow, while the width of the guide step 4 in the chamfered part in the small amt. of chamfering is wide, the magnetic tape is always stably brought into contact with the guide step 4.

6. 发明专利

JPH08167203A ROTARY DRUM DEVICE 失效
公开(公告)号：JPH08167203A
公开(公告)日：1996-06-25
申请号：JP31018894
申请日：1994-12-14
申请人： HITACHI LTD
发明人： ONO MASAHARU , MASUDA NORIAKI , TAKEDA HIDEKAZU , INOUE ATSUSHI , MASUOKA NOBUO
IPC分类号： G11B5/53 , G11B15/61
摘要： PURPOSE: To obtain stable head contact in diminishing a tape floating amt. and to protect a magnetic tape by preventing an edge part of the tape from being inserted into a gap by forming an outer peripheral surface in the vicinity of the head of an upper rotary drum into a taper with a small diameter. CONSTITUTION: The outer peripheral surface of the upper rotary drum 6 in the vicinity of a scanning part of the magnetic head 7 is constituted of a cylindrical surface forming a taper having a smaller diameter than a magnetic tape traveling surface 15 of a lower fixed drum 1. By this method, the magnetic tape floating amt. in the scanning part of the head is diminished, and even when a tape tension is varied to be small, stable head contact can be obtained. Then, a gap between the upper rotary drum 6 and the lower fixed drum 1 can be made small, so that at the time of winding and unwinding, the edge part of the tape is prevented from being bitten into this gap, and also even in the case of a tape having a damaged edge, the tape can smoothly and stably be traveled along the outer peripheral surface of the drum by the tapered part.

7. 发明专利

JPH0729272A MAGNETIC RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JPH0729272A
公开(公告)日：1995-01-31
申请号：JP17396893
申请日：1993-07-14
申请人： HITACHI LTD
发明人： TAKEDA HIDEKAZU , INOUE ATSUSHI , OGIJI KENJI , NISHIJIMA TATSUMI , MASUOKA NOBUO , MARUYAMA HIDENORI , MASUDA NORIAKI , ONO MASAHARU
IPC分类号： G11B15/665
摘要： PURPOSE:To prevent the striking of a magnetic lead on a drum lead and the damage on a tape lower end by loading the lower end of the tape while loading from upward for the lead provided on a tape guide drum and escaping the lower end of the tape while unloading upward. CONSTITUTION:When a cassette is loaded, and tape loading is started, a driving motor 14 is rotated, and a ring gear 8 is turned in the direction of the arrow B through gears 13, 11. According to that, a connection pin 9 is moved in a long hole 7a, and a spring 10 is stretched out, and a turning disk 7 and a tape guide drum 2 are turned in the same direction by the drawing force. According to the advance of tape loading, the turning of the gear 8 is advanced, and the projection part 7c of the turning disk 7 is abutted on a stopper 15. Further, the spring 10 is stretched out, and the drum 2 is positioned, and a rotation angle is controlled. The lead 6 provided on the drum 4 is changed from a height of a broken line to the same of a solid line. The lead 6 is abutted on the lower end of the tape from the lower part. At this time, the lead 6 is lower than the lower end 16a of the tape 16, and the turning of the lead 6 is advanced.

8. 发明专利

JPH06349147A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH06349147A
公开(公告)日：1994-12-22
申请号：JP13815493
申请日：1993-06-10
申请人： HITACHI LTD
发明人： MASUDA NORIAKI , MASUOKA NOBUO , OKAMOTO TOMOKI , ABE FUKUOKU , ONO MASAHARU , TAKITA KOHEI , OGIJI KENJI , KAKU NOBUYUKI
IPC分类号： G11B15/02 , G11B15/07 , G11B15/10
摘要： PURPOSE:To improve the operability by providing a cassette inserting hole in one place on a VTR and automatically carrying a cassette into its corresponding mechanism in accordance with a kind of the inserted cassette. CONSTITUTION:A VHS mechanism, an 8mm mechanism and a common circuit (signal processing and servo circuit) are built in the device. Then, when a cassette is placed on a tray, what kind of the cassette is detected by a tape cassette detecting means. Its detected signal is transmitted to a system control means. Which mechanism should carry the cassette is decided, and then a cassette carrying means is immediately operated by this control means. When the cassette is loaded into its objective mechanism, a completion signal is transmitted by a cassette loading detecting means to a system control means. A signal of the system control means is transmitted to a circuit control means, where an optimum constant is set for operating under its system by the system control means.

9. 发明专利

JPH0684152A ROTARY MAGNETIC HEAD DEVICE AND UNBALANCE CORRECTING DEVICE THEREFOR 失效
公开(公告)号：JPH0684152A
公开(公告)日：1994-03-25
申请号：JP23561992
申请日：1992-09-03
申请人： HITACHI LTD
发明人： ONO MASAHARU , MASUDA NORIAKI , KAKU NOBUYUKI
IPC分类号： G11B5/52
摘要： PURPOSE:To make it possible to correct the unbalance of the entire rotary body highly accurately by attaching minute particles on a surface to be corrected as a balancer, and compensating for the unbalance of the rotary body. CONSTITUTION:As a correcting balancer for correcting unbalance, paint is used. The paint is sprayed through a nozzle 17 so as to form minute particles 18 in order to facilitate the control of the weight of the balancer. The weight of the balancer Wb 14 is adjusted by controlling the spraying time. The adding position of the Wb 14 is aligned by using a shield plate 19, wherein a hole is provided, and aligning the position of the hole to the unbalanced position. The weight of the Wb 14 can be further adjusted by changing the diameter of the hole. Since the paint is atomized and sprayed, the weight of several mg or less can be controlled. The sprayed paint is solidified in several seconds and is not separated even in high-speed rotation. Moisture in air is not absorbed, and the time change does not occur. The same correction of a rotor 8 is performed.

10. 发明专利

JPS60119612A MANUFACTURE OF DOUBLE AZIMUTH THIN FILM MAGNETIC HEAD 失效
公开(公告)号：JPS60119612A
公开(公告)日：1985-06-27
申请号：JP22686683
申请日：1983-12-02
申请人： HITACHI LTD
发明人： ONO HIROAKI , KONISHI KATSUO , ABE MITSUO , ONO MASAHARU
IPC分类号： G11B5/147 , G11B5/23 , G11B5/31
摘要： PURPOSE:To manufacture a pair of differential gaps having two different azimuth angles at high accuracy by making respective gap spacers held between two soft magnetic films to become differential gaps having two different azimuth angles of a magnetic head. CONSTITUTION:A nonmagnetic film 2 that can be cut easily is coated on a nonmagnetic substrate 1 by vapor deposition etc. The first soft magnetic film 3 is laminated to many layers by vapor deposition etc. to a thickness equivalent to track width on it. Then the film 3 is removed by a lap and a straight groove 9 is formed. A part of the film 3 is cut along the groove 7 by a diamond cutting tool to trapezoidal form. At this time, cut faces becomes become differential gas faces 10, 10' of + - azimuth respectively. Then, the gap spacer 5 is coated by spattering etc. on the differential gap faces 10, 10' to become specified gap length. By this way, chips on cut faces right and left of the cutting tool escape to inside of the cutting tool, and generation of burrs can be suppressed. Further, as area of cutting is smaller by the area of the groove, cutting resistance becomes small.

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