公开(公告)号：GB2143072A

公开(公告)日：1985-01-30

申请号：GB8412128

申请日：1984-05-11

Applicant: SONY CORP

Inventor： KOIZUMI OSAMU ,  NEMOTO TSUNEO ,  SUGAWARA KOUKICHI

IPC: G11B23/03 ,  G11B23/033 ,  G11B23/06

Abstract: A flexible disc cassette is provided with a shutter which is capable of opening/closing a head access hole and a pad insertion hole respectively formed in upper and lower halves thereof. A V-shaped torsion spring is used as the spring for biasing the shutter in the closed position. The lengths of the linear arm portions integrally formed with both sides of the coiled portion of the spring are approximately the same. Both tips of the arm portions are bent at approximately 90 DEG so as to form the L-shaped hooks which has the same length and which extend in the opposite directions along the height of the coiled portion. The L-shaped hooks are stopped by the shutter and the cassette case.

公开(公告)号：FR2545969A1

公开(公告)日：1984-11-16

申请号：FR8407348

申请日：1984-05-11

Applicant: SONY CORP

Inventor： KOIZUMI OSAMU ,  NEMOTO TSUNEO ,  SUGAWARA KOUKICHI

IPC: G11B23/03 ,  G11B23/033 ,  G11B23/04

Abstract: A flexible disc cassette is provided with a shutter which is capable of opening/closing a head access hole and a pad insertion hole respectively formed in upper and lower halves thereof. A V-shaped torsion spring is used as the spring for biasing the shutter in the closed position. The lengths of the linear arm portions integrally formed with both sides of the coiled portion of the spring are approximately the same. Both tips of the arm portions are bent at approximately 90 DEG so as to form the L-shaped hooks which has the same length and which extend in the opposite directions along the height of the coiled portion. The L-shaped hooks are stopped by the shutter and the cassette case.

公开(公告)号：JPH0991921A

公开(公告)日：1997-04-04

申请号：JP27074095

申请日：1995-09-26

Applicant: SONY CORP

Inventor： SAITO KENGO ,  NAKAJIMA IKUYUKI ,  KOIZUMI OSAMU ,  TAKAHASHI YUJI

IPC: G11B23/033 ,  G11B23/00 ,  G11B23/03

Abstract: PROBLEM TO BE SOLVED: To apply a disc cartridge to a disc drive conforming to a 3.5 inch form factor and enlarge a diameter of a disc. SOLUTION: A lateral width B1 at a front edge 22a of a cartridge 22 is set to be 90.0mm. A lateral width B2 at a rear edge 22b is set to be 98.0mm. A diameter of a floppy disc 24 is accordingly enlarged from 85.8mm to 94.0mm.

公开(公告)号：JPH08321105A

公开(公告)日：1996-12-03

申请号：JP15121495

申请日：1995-05-26

Applicant: SONY CORP

Inventor： KOIZUMI OSAMU

IPC: G11B15/675 ,  G11B23/087

Abstract: PURPOSE: To allow the common use of a large-capacity data cartridge and open an opening/closing lid of the large-capacity data cartridge safely without interfering with a magnetic head. CONSTITUTION: A slide guide 56 for opening/closing an opening/closing lid 24 of a large-capacity data cartridge 51 is provided separately from cartridge insertion guides 79, 80. This slide guide 56 is constructed to be freely slidable along insertion and a discharge directions of the data cartridge 51. At the same time, the slide guide 56 is urged to slide in the discharge direction of the data cartridge 51 by a tension spring 58.

公开(公告)号：JPH0863936A

公开(公告)日：1996-03-08

申请号：JP19639994

申请日：1994-08-22

Applicant: SONY CORP

Inventor： SASAKI KAZUO ,  KOIZUMI OSAMU

IPC: G11B23/087

Abstract: PURPOSE: To smoothly rotate a rotating member such as a hub or a roller, etc., over a long term by improving the durability of lubricant (grease). CONSTITUTION: A data cartridge 1 is provided with a base plate 2, a cover 3 attached to the base plate 2, and the rotating member rotatably attached between the base plate 2 and the cover 3 such as a supply hub 12 and a take-up hub 13 or a drive roller 14 and corner rollers 15 and 16. The contact surface of the base plate 2 or/and the cover 3 with the rotating member is formed to be a rugged surface 21 having a lubricant (grease) holding function.

公开(公告)号：JPH0845235A

公开(公告)日：1996-02-16

申请号：JP17931994

申请日：1994-07-29

Applicant: SONY CORP

Inventor： SATO MASANORI ,  SAITO KENGO ,  KOIZUMI OSAMU

IPC: G11B15/093 ,  G11B15/28 ,  G11B15/54 ,  G11B23/087 ,  G11B23/28 ,  G11B23/30

Abstract: PURPOSE:To reduce the generation of data errors and to prevent the loss of a storage capacity by detecting a rotation state by means of the number of revolution detecting part provided in a drive roller and controlling a driving device. CONSTITUTION:A cartridge main body 2 is constituted by combining a covering member 3 and a base plate 4 and a pair of tape reels 8 and 9 are housed in this cartridge main body 2. A magnetic tape 7 wound on these tape reels 8 and 9 is running-driven from an opening part 21 provided in the front part of the covering member 3 through a drive roller 13 with a part of its peripheral surface exposed. The drive roller 13 receives rotation transmitted when a capstan roller in the drive devie side is brought into contact with the surface. The loss of the rotation transmission due to a slipping phenomenon produced between the drive roller 13 and the capstan roller is corrected by detecting a rotary number detection part provided in the drive roller via a detection part provided in the covering member 3 and controlling it in the drive device side.

公开(公告)号：JPH07130123A

公开(公告)日：1995-05-19

申请号：JP27197793

申请日：1993-10-29

Applicant: SONY CORP

Inventor： SATO MASANORI ,  KOIZUMI OSAMU

IPC: G11B23/087

Abstract: PURPOSE:To reduce an off-track amt. of a magnetic tape in the tape cartridge and to enable high density recording accordingly. CONSTITUTION:One pair of tape guides 7 and 8 are-erected on a base plate 2 to have a magnetic head inserting parts 9 and 15 between them, and the magnetic tape 6 is stretched between these tape guides 7 and 8. One tape guide 7 out of the one pair of tape guides 7 and 8 is provided with a lower flange 21 for regulating the lowering movement of the magnetic tape 6 by touching the lower edge 6b of the magnetic tape 6. The other tape guide 8 is provided with an upper flange 22 for regulating the lifting movement of the magnetic tape 6 by touching the upper edge 6a of the magnetic tape 6. A space between a tape position regulating surface 21a of the lower flange 21 of the one tape guide 7 and a tape position regulating surface 22a of the upper flange 22 of the other tape guide 8 is set to be equivalent to the width of the magnetic tape 6 or slightly narrower than this.

公开(公告)号：JPH0796986A

公开(公告)日：1995-04-11

申请号：JP24492193

申请日：1993-09-30

Applicant: SONY CORP

Inventor： KONNO SHUNICHI ,  OTA TAKASHI ,  OZAKI HIROSHI ,  NIHEI YASUTOKI ,  URAYAMA KIYOSHI ,  AIZAWA TAIZO ,  HIRANO TAKAYASU ,  KOIZUMI OSAMU

IPC: B65D85/575 ,  G11B23/02 ,  G11B23/023

Abstract: PURPOSE:To fix a video cassette inside a video cassette-containing case so that the video cassette does not incline against impulses on falling or vibration on transporting and further, the supply reel or the take-up reel does not rotate. CONSTITUTION:A videocassette-containing case 1 is constituted of the case body 2 and the cover 4 attached to the case body 2 so as to freely open and close it at the hinge 3. Axses 5, 6 which are fitted into driving holes of the supply reel and the take-up reel of the video cassette contained in the case body 2, are provided. An elastic material 7 is attached to the outer periphery of the axes 5, 6 to force the elastic material to contact the inner peripheral face of the driving holes 114, 115 of the reel.

公开(公告)号：JPH0696555A

公开(公告)日：1994-04-08

申请号：JP26906492

申请日：1992-09-14

Applicant: SONY CORP

Inventor： KOIZUMI OSAMU

IPC: G11B23/087 ,  G11B23/28 ,  G11B23/30

Abstract: PURPOSE:To discriminate a tape cassette for video from that for data visually by making a hole for identifying information in the bottom surface of a cassette main body so that one part of the rear surface of the cassette main body is cut. CONSTITUTION:The title cassette is provided with a cassette main body 3 consisting of upper and lower halves 1 and 2 and a pair of tape reels 4 and 5 which are placed inside the cassette main body so that they can be rotated freely. Then, one or more holes 19 and 20 for identifying information are made so that the rear surface of the cassette main body is cut, thus judging whether the tape cassette is the one for data or that for video at a glance.

公开(公告)号：JPH068982A

公开(公告)日：1994-01-18

申请号：JP19013992

申请日：1992-06-25

Applicant: SONY CORP

Inventor： KOIZUMI OSAMU ,  OGASAWARA YUTAKA

IPC: B65D85/575 ,  G11B23/02 ,  G11B23/023

Abstract: PURPOSE:To prevent a top panel from being closed when a video cassette is in such an abnormal accommodation state that a lid of the video cassette is caught by a cassette positioning rib. CONSTITUTION:The dimensions A, B and C of a video cassette storing case is designed so as to satisfy an equation B-C