Patent EP0248908A1 successfully refreshed from Google Patents.
EP0248908A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Disk cartridge having shutter and a device for opening and closing the shutter
Assignee: Sony Corp
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Filing: 1986-11-21
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Granted: —
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Expires: 2006-11-21
Abstract
Abstract Disk cartridge (1) having a shutter (9) that slides only on one side of a cartridge (5) to open or close the openings (7) and (8) where there are disposed pick-up devices (44) that are located on the upper and lower surfaces of the cartridge (5) to read or rewrite signals, the cartridge (5) holding a disk (6) which can record data signals on both sides thereof, such as an optical disk. The invention further relates to a device for opening and closing the shutter of the cartridge (1) in which a pair of shutter opening/closing arms (51) and (52) are disposed facing the direction for inserting the disk cartridge (1), in order to open or close the shutter (9) of the disk cartridge (1). A protuberance (57) or (58) is brought into engagement with an engaging hole (29) of the shutter (9), whereby the arm (51) or (52) is turned as the cartridge (1) is inserted, and the shutter (9) slides to open the openings (7), and (8). When the disk cartridge (1) is improperly inserted, the protuberance (57) or (58) is not engaged with the engaging hole (29), whereby the disk cartridge that is improperly inserted is detected.
Inventors
- 👤 Masayuki Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 17:45
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/041; G11B17/043; G11B17/0436; G11B23/00; G11B23/02; G11B23/03; G11B23/0301; G11B23/0308; G11B23/0311; G11B23/033; G11B23/0332
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
185 words
A disk cartridge having a shutter that may be slid by a shutter opening and closing device between a first position of closing signal read-out or signal write apertures on the upper or lower side of the disk-containing cartridge and a second position of closing said apertures, characterized in that an engaging hole for engagement with a first rotary arm of the shutter opening and closing device is provided to the lateral side of said shutter of said disk cartridge that is orthogonal to the direction of inserting said disk cartridge, in that said first rotary arm engaged in said opening is turned by the movement of insertion of said disk cartridge to slide said shutter from said first position to said second position to open said apertures, and in that a recess in which a second rotary arm provided to said device is engaged is provided on the lateral surface of said disk cartridge adjacent to the lateral side of said shutter provided with said engaging hole and at a position exposed by said shutter when said shutter is slie to said second position.
Claim 2
Dependent Claim
185 words
A disk cartridge having a shutter that may be slid by a shutter opening and closing device between a first position of closing signal read-out or signal write apertures on the upper or lower side of the disk-containing cartridge and a second position of closing said apertures, characterized in that an engaging hole for engagement with a first rotary arm of the shutter opening and closing device is provided to the lateral side of said shutter of said disk cartridge that is orthogonal to the direction of inserting said disk cartridge, in that said first rotary arm engaged in said opening is turned by the movement of insertion of said disk cartridge to slide said shutter from said first position to said second position to open said apertures, and in that a recess in which a second rotary arm provided to said device is engaged is provided on the lateral surface of said disk cartridge adjacent to the lateral side of said shutter provided with said engaging hole and at a position exposed by said shutter when said shutter is slie to said second position.
Claim 3
Dependent Claim
50 words
A disk cartridge having a shutter according to claim 1 characterized in that signal read-out or signal write apertures are formed on the upper and lower surfaces of cartridge accommodating a disk, said apertures on said upper and lower surfaces being adapted to be opened and closed by said shutter.
Claim 4
Dependent Claim
44 words
A disk cartridge having a shutter according to claim 2 characterized in that said recess is provided transversely symmetrically with respect to the lateral surface of said disk cartridge and the position of said engaging hole when said shutter is at said second position.
Claim 5
Dependent Claim
30 words
A disk cartridge having a shutter according to claime 1 or 2 characterized in that disk table inserting openings for rotationally driving said disk are formed contiguously to said apertures.
Claim 6
Dependent Claim
183 words
A disk cartridge having a shutter and a shutter opening and closing device for opening and closing said shutter, said shutter being slidable between a first position of closing signal read-out or signal write apertures on the upper or lower surfaces of the cartridge accommodating a disk and a second position of opening said apertures, characterized in that said shutter of said disk cartridge is provided with an engaging hole in which a first rotary arm constituting said shutter opening and closing device is engaged, said first rotary arm engaged in said engaging hole, is turned by the inserting movement of said disk cartridge to cause movement of said shutter from said first position to said second position to open said apertures and in that a recess into which said rotary arm provided to said device is intruded is provided on a lateral surface of said disk cartridge adjacent to said lateral side of said shutter provided with said engaging hole, the turning angle of said second rotary arm being detected for detecting that said shutter has been moved to said second position.
Claim 7
Dependent Claim
183 words
A disk cartridge having a shutter and a shutter opening and closing device for opening and closing said shutter, said shutter being slidable between a first position of closing signal read-out or signal write apertures on the upper or lower surfaces of the cartridge accommodating a disk and a second position of opening said apertures, characterized in that said shutter of said disk cartridge is provided with an engaging hole in which a first rotary arm constituting said shutter opening and closing device is engaged, said first rotary arm engaged in said engaging hole, is turned by the inserting movement of said disk cartridge to cause movement of said shutter from said first position to said second position to open said apertures and in that a recess into which said rotary arm provided to said device is intruded is provided on a lateral surface of said disk cartridge adjacent to said lateral side of said shutter provided with said engaging hole, the turning angle of said second rotary arm being detected for detecting that said shutter has been moved to said second position.
Claim 8
Dependent Claim
95 words
A disk cartridge having a shutter and a shutter opening and closing device for opening and closing said shutter according to claim 5 characterized in that signal read-out or signal write apertures are provided on the upper and lower surfaces of a cartridge accommodating a disk, said apertures on said upper and lower surfaces being opened and closed by said shutter, and in that said second rotary arm is provided transverse of said lateral surface of said disk cartridge so that said second rotary arm may be engaged with said engaging hole of said shutter.
Claim 9
Dependent Claim
44 words
A disk cartridge having a shutter and a shutter opening and closing device according to claim 7 characterized in that a spring is provided for rotationally urging said first and second rotary arms in a direction of returning said shutter towards said first position.
Claim 10
Dependent Claim
41 words
A disk cartridge having a shutter and a shutter opening and closing device according to claim 7 characterized in that said spring is engaged at one end with said rotary arm and at the other end with said second rotary arm.
Claim 11
Dependent Claim
35 words
A disk cartridge having a shutter and a device for opening and closing said shutter according to claim 5 characterized in that the turning angle of said rotary arm is detected by an electrical switch.
Claim 12
Dependent Claim
32 words
A disk cartridge having a shutter and a device for opening and closing said shutter according to claim 5 characterized in that the turning angle of said rotary arm is detected opto-electrically.
Claim 13
Dependent Claim
182 words
A disk cartridge having a shutter and a device for opening and closing said shutter, said shutter being slidable between a first position of closing signal read-out or signal write apertures on the upper and lower surface of a cartridge containing a disk, characterized in that said shutter of said disk cartridge is provided with an engagement opening in which a first rotary arm constituting said shutter opening and closing device is engaged, said first rotary arm engaged in said engagement opening is turned by the inserting movement of said disk cartridge to cause movement of said shutter from said first position to said second position to open said apertures, in that a recess into which said rotary arm provided to said device is intruded is provided on a lateral surface of said disk cartridge adjacent to said lateral side of said shutter provided with said engaging hole and in that a stopper is provided for limiting the rotation of said second rotary arm when said shutter is not moved to said second position for regulating the inserting of said disk cartridge.
Claim 14
Dependent Claim
182 words
A disk cartridge having a shutter and a device for opening and closing said shutter, said shutter being slidable between a first position of closing signal read-out or signal write apertures on the upper and lower surface of a cartridge containing a disk, characterized in that said shutter of said disk cartridge is provided with an engagement opening in which a first rotary arm constituting said shutter opening and closing device is engaged, said first rotary arm engaged in said engagement opening is turned by the inserting movement of said disk cartridge to cause movement of said shutter from said first position to said second position to open said apertures, in that a recess into which said rotary arm provided to said device is intruded is provided on a lateral surface of said disk cartridge adjacent to said lateral side of said shutter provided with said engaging hole and in that a stopper is provided for limiting the rotation of said second rotary arm when said shutter is not moved to said second position for regulating the inserting of said disk cartridge.
Claim 15
Dependent Claim
43 words
A disk cartridge having a shutter and a device for opening and closing said shutter according to claim 11 characterized in that the end of said lateral side of said shutter is provided with an inclined guide section for turning said rotary arm.
References Cited (Backward Citations)
No citation records indexed.
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