Patent EP0218231A2 successfully refreshed from Google Patents.
EP0218231A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Shutter arrangement for a disc cartridge
Assignee: Maxell Ltd
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Filing: 1986-10-07
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Granted: —
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Expires: 2006-10-07
Abstract
Abstract In a disc cartridge comprising a cartridge case having recording head and spindle insertion hole and a shutter movably mounted on the cartridge case for moving between an opened position and closing position where the recording head and spindle insertion hole are closed, said shutter is mounted on a slider movably mounted along one edge portion of the cartridge case, wherein the improvement comprises a stopper for releasably maintaining the shutter in the closed position when the disc cartridge is not used.
Inventors
- 👤 Mitsuyoshi Koyama
- 👤 Seiichi Matsushima
- 👤 Jun-Ichi Umeda
- 👤 Yasunori Kanazawa
- 👤 Yoshiyuki Nakamori
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 02:20
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; G11B23/0301; G11B23/0308
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
106 words
A disc cartridge comprising a cartridge case made of an upper case and a lower case each having at least one recording head and spindle insertion hole, recording medium of a disc shape rotatably accommodated in the cartridge case, a shutter movably mounted on the cartridge case for moving between an opened position and closing position where the recording head and spindle insertion hole are closed and a slider movably mounted along one edge portion of the cartridge case and connected with the shutter, wherein the improvement comprises a stopper for releasably maintaining the shutter in the closed position when the disc cartridge is not used.
Claim 2
Dependent Claim
106 words
A disc cartridge comprising a cartridge case made of an upper case and a lower case each having at least one recording head and spindle insertion hole, recording medium of a disc shape rotatably accommodated in the cartridge case, a shutter movably mounted on the cartridge case for moving between an opened position and closing position where the recording head and spindle insertion hole are closed and a slider movably mounted along one edge portion of the cartridge case and connected with the shutter, wherein the improvement comprises a stopper for releasably maintaining the shutter in the closed position when the disc cartridge is not used.
Claim 3
Dependent Claim
29 words
The disc cartridge according to claim 1, wherein said stopper is provided with a resilient free end which is detachably engageable with an engaging portion formed on the slider.
Claim 4
Dependent Claim
30 words
The disc cartridge according to claim 1, wherein said slider comprises at least one opening defined in position corresponding to a shutter moving lever insertion opening defined in the shutter.
Claim 5
Dependent Claim
22 words
The disc cartridge according to claim 1, wherein said slider comprising projections projected toward the recording medium for engaging with the stopper.
Claim 6
Dependent Claim
33 words
The disc cartridge according to claim 1, wherein said shutter comprises engaging tips projected in one direction and said cartridge case comprises engaging ribs for engaging with the engaging tips of the shutter.
Claim 7
Dependent Claim
18 words
The disc cartridge according to claim 1 wherein said shutter can be moved freely by the external force.
Claim 8
Dependent Claim
19 words
The disc cartridge according to claim 1 further comprising spring means for retracting the shutter to the closed position.
Claim 9
Dependent Claim
73 words
The disc cartridge according to claim 1, wherein said stopper is made of plastic resin material with a suitable resiliency and is formed in a U character shape having a pair of legs with one end of one leg being provided with securing means for securing the stopper in the cartridge case and one end of the another leg being provided with an engaging tip engageable with the engaging portion of the slider.
Claim 10
Dependent Claim
61 words
The disc cartridge according to claim 1, wherein said stopper is made of plastic resin material with a suitable resiliency and is formed in a straight shape having its one end provided with securing means for securing the stopper to the cartridge case and having another end formed an engaging tip engageable in an opening defined in the shutter or slider.
Claim 11
Dependent Claim
25 words
The disc cartridge according to claim 1, wherein said shutter and slider comprise openings for receiving shutter moving lever with the opening tapered inwardly narrowed.
Claim 12
Dependent Claim
16 words
The disc cartridge according to claim 10, wherein said tapered opening is formed in the slider.
Claim 13
Dependent Claim
33 words
The disc cartridge according to claim 10, wherein the angle of the tapered portion is in the range of 45° to 90° with respect to the direction of the movement of the shutter.
References Cited (Backward Citations)
No citation records indexed.
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