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1. 发明专利

JPH0644764A DISK CARTRIDGE TYPE RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH0644764A
公开(公告)日：1994-02-18
申请号：JP19982992
申请日：1992-07-27
申请人： FUJITSU LTD , COPAL CO LTD
发明人： IMAMURA FUMINORI , NIMATA AKIO , FUJITA YOSHIHIDE , ITO KENICHI , MORIBE MINEO , IWAMURA YASUMASA , TAKAHASHI MITSUO , KAWAGUCHI HIDEYUKI
IPC分类号： G11B17/04 , G11B17/043 , G11B33/02
摘要： PURPOSE:To improve dustproof property in an insertion port without impairing thinning. CONSTITUTION:This device is provided with a first door 20 closing the insersion port 12 in the state of before inserting a disk cartridge, and a second door 21 closing the insersion port 12 in the state of inserting the disk cartridge 16. This device is constituted so that a second door 21 is released from engagement when a first door 20 is pressed and opened by the cartridge 16 and becomes the state capable of closing the insertion port 12.

2. 发明专利

JPH05298601A 失效
公开(公告)号：JPH05298601A
公开(公告)日：1993-11-12
申请号：JP16665591
申请日：1991-07-08
申请人： COPAL CO LTD , FUJITSU LTD
发明人： TAKAHASHI MITSUO
IPC分类号： G11B5/02 , G11B11/10 , G11B11/105
摘要： PURPOSE:To constitute the magnetooptic disk device flatly to small size at low cost. CONSTITUTION:The magnetooptic disk device equipped with a bias magnetic field applying means is provided with a main body 1 which has a couple of bearing parts, a bias magnetic field application part 3 which is divided into plural parts along the rotary shaft at the bearing parts and consists of a two- pole magnetized permanent magnet, and permanent magnets 4 which are divided into four along the rotary shaft and magnetized to have two magnetic poles integrally at both end parts of a bias magnetic field generation part. Further, the rotor part of a driving means which applies a turning force to the bias magnetic field application part is formed and a closed magnetic circuit is formed between the different magnetic poles of the rotor part; and a flat coil 9 is provided and a couple of flat plate type yoke parts 7 and 9 of the driving means which produce a revolving magnetic field are provided on the main body 1 opposite each other to constitute the device flatly.

3. 发明专利

JPS63149864A DISK CARTRIDGE DRIVING DEVICE 失效
公开(公告)号：JPS63149864A
公开(公告)日：1988-06-22
申请号：JP29574986
申请日：1986-12-13
申请人： FUJITSU LTD , COPAL CO LTD
发明人： SATO YOSHIHIRO , SHIMURA SOICHI , MUTO YOSHIRO , TAKAHASHI MITSUO , ASAKO KOJI
IPC分类号： G11B17/04 , G11B17/043
摘要： PURPOSE:To eliminate damage and abrasion between a cartridge and an arm coupling and to improve the reliability by engaging a notch of the side face and an engaging part of the tip of a turnable lock body at the end time for inserting the cartridge. CONSTITUTION:The tip of a cartridge 100 inserted into a housing comes into contact with a driven part 8, a lock body 2 turns clockwise centering around a pin 11 against a spring 14, an engaging part 13 of its tip is engaged to a notch 100a of the side face of the cartridge, a shutter is also opened, and in this state, even if a hand is set free, the cartridge is not discharged. Simultaneously, by an engagement of a lock body shaft 22 and a lever 5, a sensor 4 detects a complete insertion, the housing 1 descends and a disk becomes an operating state. Accordingly, since its is unnecessary to allow a cartridge discharging arm to has a detaining function, abrasion and damage of an arm coupling part and the cartridge are eliminated and the reliability can be improved.

4. 发明专利

JPH0271455A LOADING MECHANISM 失效
公开(公告)号：JPH0271455A
公开(公告)日：1990-03-12
申请号：JP22216788
申请日：1988-09-05
申请人： FUJITSU LTD , COPAL CO LTD
发明人： SATO YOSHIHIRO , SHIMURA SOICHI , TAKAHASHI MITSUO , ASAKO KOJI
IPC分类号： G11B17/04 , G11B17/043
摘要： PURPOSE:To make the projection of a cartridge from a loading/unloading opening when the cartridge is ejected a prescribed quantity by driving a control lever by the turning of an auxiliary lever which interlocks a sutter opening/ closing lever and applying a break to the side face part of the cartridge when it is ejected. CONSTITUTION:The title mechanism is provided with an auxiliary lever 6 which follows and interlocks the turning of a shutter opening/closing lever 4 and a control lever 8 which is turned by the pushing of the auxiliary lever 6 and whose tip part is slided to a side face part 2B of a cartridge 2. When the cartridge 2 is projected from the loading/unloading opening by the prescribed quantity when the cartridge is ejected, the tip part of the control lever 8 is slided to the side face part 2B of the cartridge 2. When the cartridge 2 is ejected from a housing 1, the projection of the cartridge from the loading/unloading opening can always be made a prescribed value.

5. 发明专利

JPS63127458A CARTRIDGE AUTOLOADING MECHANISM 失效
公开(公告)号：JPS63127458A
公开(公告)日：1988-05-31
申请号：JP27288586
申请日：1986-11-18
申请人： FUJITSU LTD , COPAL CO LTD
发明人： SATO YOSHIHIRO , SHIMURA SOICHI , MUTO YOSHIRO , TAKAHASHI MITSUO , ASAKO KOJI
IPC分类号： G11B17/04 , G11B17/043
摘要： PURPOSE:To facilitate a manual cartridge ejection at the time of stoppage by forming a groove to guide an ejection member to be transferred from a forwarding position to a backward position by hand at the time of the stoppage of a drive source. CONSTITUTION:When a cartridge is loaded into a housing 23 which is positioned at its ascended level, an eccentric roller 22 is turned around by 180 deg. to the right by means of the drive of a motor 26, and the ejection member 21 which is engaged with the roller 22 via a groove 24 is moved to the right, the housing 23 is descended with its roller 29 as guided by a sloping cam 25. If the power failure or some trouble is happened on the above arrangement, the member 21 can be pushed by hand to the left because of the roller 22 being positioned in a wide part 31 of the groove 24, thus ascending the housing 23 to enable the cartridge to be ejected out.

6. 发明专利

JPH05151753A MAGNETO-OPTICAL DISK DEVICE 失效
公开(公告)号：JPH05151753A
公开(公告)日：1993-06-18
申请号：JP31615391
申请日：1991-11-29
申请人： COPAL CO LTD , FUJITSU LTD
发明人： TAKAHASHI MITSUO , ASAKO KOJI , KAGEYAMA KAZUHIKO , SATO YOSHIHIRO , ARAI SHIGERU
IPC分类号： G11B25/04 , G11B17/04 , G11B17/043
摘要： PURPOSE:To obtain a small-sized and thin device by providing a motor assembled body fixing a spindle motor movably and vertically in a direction intersecting orthogonally with the inserting direction of a cartridge. CONSTITUTION:The motor assembled body 2 is constituted of a moving member 13 fixing a spindle motor 10 and having plural projecting parts 17 on both side surfaces. An abutting condition between the head part 18a of an arm 18 and a slide member 16k is released since the arm 18 is rotated in the direction of the arrow Q1 by an insertion tip face when the cartridge 100 is inserted and a sliding plate 16 is moved in the direction of the arrow P4 by the pulling action of a spring 14 in the state of being stretched. Thus, the moving member 13 is moved in the direction of the arrow P1 since respective projecting parts 17 are moved downward along a inclined groove 16b and the spindle motor 10 for driving a disk is chucked to the disk 120 and chucking is ended. Further, ejection is performed by using an ejection motor assembled body.

7. 发明专利

JPH04109402A BIAS MAGNETIC FIELD IMPRESSING MECHANISM 失效
公开(公告)号：JPH04109402A
公开(公告)日：1992-04-10
申请号：JP22690690
申请日：1990-08-29
申请人： COPAL CO LTD , FUJITSU LTD
发明人： TAKAHASHI MITSUO
IPC分类号： G11B11/10 , G11B5/02 , G11B11/105
摘要： PURPOSE:To switch an N-pole and an S-pole at high speed and highly precisely, and to speed up recording to a magneto-optical disk by using a permanent magnet to impressing a bias magnetic field also as the rotor of a stepping motor. CONSTITUTION:The permanent magnet 2 is used also as the rotor of the stepping motor 4. Namely, in the case that various kinds of information are recorded in the magneto-optical disk 1, the permanent magnet 2 is rotated gradually one step by one step similarly to the rotor of the stepping motor 4 by controlling the supply of a current to each coil 7, 8 by a drive circuit 9. Then, the N-pole or the S-pole of the permanent magnet 2 is stopped selectively in a state that it faces to the recording surface 1a of the magneto-optical disk 1, and the recording surface 1a is irradiated by laser light from a laser light generating device, and the prescribed recording is executed. Thus, the high-speed and highly precise switching of the N-pole and the S-pole is attained, and the recording to the magneto-optical disk is speeded up.

8. 发明专利

JPH0479065A STORAGE DEVICE 失效
公开(公告)号：JPH0479065A
公开(公告)日：1992-03-12
申请号：JP19266290
申请日：1990-07-20
申请人： COPAL CO LTD , FUJITSU LTD
发明人： TAKAHASHI MITSUO
IPC分类号： G11B25/04 , G11B17/04 , G11B17/043
摘要： PURPOSE:To fit a home factor without difficulty by moving a motor for rotating a storage medium and diminishing a dead space for movement. CONSTITUTION:A moving motor 17 for vertically moving a spindle motor 4 for rotatively driving a magneto-optical disk 3 and also for rotatively driving a cartridge 11 in both forward and reverse directions to be inserted and ejected in a certain range is arranged in the rear of a cartridge housing part 12. Then, a rack 16 is fitted with a base part of a leaf spring 15, and when the rack 16 is moved under the state of a cartridge holding member 14 fitting into a recessed part 13A of the cartridge 11, the cartridge 11 is driven. Then, the spindle motor 4 is vertically moved to approach to and separate from the magneto-optical disk 3 in the cartridge 11. By this method, the home factor is easily fitted.

9. 发明专利

JPS63127456A STRUCTURE OF COLLET FOR DISK CHUCK 失效
公开(公告)号：JPS63127456A
公开(公告)日：1988-05-31
申请号：JP27288486
申请日：1986-11-18
申请人： FUJITSU LTD , COPAL CO LTD
发明人： SHIMURA SOICHI , MUTO YOSHIRO , TAKAHASHI MITSUO , ASAKO KOJI
IPC分类号： G11B17/028
摘要： PURPOSE:To prevent the generation of deflection or noise at the time of rotating a recording medium and to reduce the operation stroke of a collet by supporting upper and lower collects, which press the medium to a supporting member, on a collet shaft with a ball-and-roller bearing between them. CONSTITUTION:If a disk-shaped medium is placed on a supporting member 31 and a collet 21 is allowed to fall, a front end part 32 of a lower collet 23 is inserted through the center hole of the medium and is fitted into a cup 31, and a pressing part 33 of the lower collet 23 presses and clamps the medium when an upper collet 24 is pressed to elastically deform the lower collet 23. The front end part 32 and the upper collet 24 are accurately centered by bearings 27 and 26 respectively. Thus, the generation of deflection and noise at the time of rotating the medium is prevented and the extent of insertion of the collet in the cup 31 is small.

10. 发明专利

JPS63127459A CARTRIDGE LOADING AND UNLOADING MECHANISM 失效
公开(公告)号：JPS63127459A
公开(公告)日：1988-05-31
申请号：JP27288386
申请日：1986-11-18
申请人： FUJITSU LTD , COPAL CO LTD
发明人： SATO YOSHIHIRO , MUTO YOSHIRO , TAKAHASHI MITSUO , ASAKO KOJI
IPC分类号： G11B17/04 , G11B17/043
摘要： PURPOSE:To ensure the difficulty of happening a biting engagement to a cartridge and to reduce the taking-off force of a magnetic chuck by forming that a pitch of cams of an ejection member is larger than that of their respective engagement members of a housing to be engaged with. CONSTITUTION:When an ejection member 31A is moved to a backward position to the left under such condition that the engagement members 47 and 48 of the housing 32 are kept in contact with the lower parts of the cams 33A and 34A of the ejection member 31A, the housing 32 is positioned to an ascended place in the case. Since the engagement members have a pitch L, whereas the cams have a pitch L+a, an ascending posture of the housing is inclined for the first time and then finally horizontal. Consequently, it is hard to happen a biting engagement to the cartridge when inserted into the housing and on the other hand a big force for taking off the magnetic chuck is not essential.

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