JPH0424551Y2 - - Google Patents
Info
- Publication number
- JPH0424551Y2 JPH0424551Y2 JP1988165698U JP16569888U JPH0424551Y2 JP H0424551 Y2 JPH0424551 Y2 JP H0424551Y2 JP 1988165698 U JP1988165698 U JP 1988165698U JP 16569888 U JP16569888 U JP 16569888U JP H0424551 Y2 JPH0424551 Y2 JP H0424551Y2
- Authority
- JP
- Japan
- Prior art keywords
- shielding member
- cassette
- recording
- hole
- magnetic sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000002265 prevention Effects 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は磁気シート等を内蔵したカセツトに関
し、さらに詳しくは再記録防止用の透孔とした形
成された検出部を備えた磁気シートカセツトに関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette containing a magnetic sheet or the like, and more particularly to a magnetic sheet cassette equipped with a detecting section formed as a through hole to prevent re-recording.
一般に、磁気シートカセツトは一度記録した内
容を保護するために再記録防止機構が設けられて
いる。例えば磁気シートカセツトの一部に透孔を
設けておき、装置側にこの透孔を検出する検出手
段、例えば光学的な検出手段を設け、前記透孔に
シール等が貼着されていた場合には光学的検出手
段の光路が遮断され、制御回路が作動し、再記録
を防止できるようにした構造が採用されている。 Generally, magnetic sheet cassettes are provided with a re-recording prevention mechanism to protect the contents once recorded. For example, if a through hole is provided in a part of the magnetic sheet cassette, and a detection means, such as an optical detection means, is provided to detect the through hole on the device side, and a sticker or the like is pasted to the through hole, A structure is adopted in which the optical path of the optical detection means is blocked and a control circuit is activated to prevent re-recording.
ところが、このような構造を採用すると、再記
録防止のための透孔を開閉するシールあるいは蓋
などの別部材が必要であり、磁気シートカセツト
が厚紙などで形成されている場合にはシートある
いは蓋の着脱時にカセツトが破損するという欠点
がある。 However, if such a structure is adopted, a separate member such as a seal or a lid is required to open and close the through hole to prevent re-recording, and if the magnetic sheet cassette is made of cardboard or the like, the sheet or lid is required. The disadvantage is that the cassette is damaged when it is attached or removed.
また、透孔を開閉する部材として別部材を有す
る場合には、このシールや蓋等を紛失する恐れが
あり、いざという時に役に立たないという欠点が
ある。 Further, when a separate member is provided as a member for opening and closing the through hole, there is a risk that the seal, lid, etc. may be lost, and there is a drawback that they are useless in an emergency.
本考案は以上のような従来の欠点を除去するた
めになされたもので、磁気シートカセツトに損傷
を与えることなく、また紛失も生じることがない
再記録防止構造を有する磁気シートカセツトを提
供することを目的としている。 The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional magnetic sheet cassette, and an object of the present invention is to provide a magnetic sheet cassette having a re-recording prevention structure that does not damage the magnetic sheet cassette and prevent it from being lost. It is an object.
本考案においては、上記の目的を達成するため
に、略方形でその内部に円板状磁気記録媒体を内
蔵するカセツトにおいて、該カセツトの略中心線
上に位置する記録または読取り手段のための開口
部と、該開口部を中心とし略左右対称且つ前記円
板状磁気記録媒体領域から外れた位置に配置され
た２つの再記録防止用透穴と、該再記録防止用透
穴の近傍に設けられ前記再記録防止用透穴を遮蔽
する状態位置と、開放する状態位置との間で移動
し得る遮蔽部材と、該遮蔽部材が異なる状態位置
へ不用意に移動することを阻止する移動阻止手段
とを有し、前記遮蔽部材が前記カセツトの表面か
ら少なくとも突出しないとともに、該遮蔽部材の
移動を前記移動阻止手段にて阻止して前記遮蔽部
材による遮蔽状態あるいは開放状態を維持し得る
ようにした構造を採用した。 In order to achieve the above object, the present invention provides an opening for recording or reading means located approximately on the center line of the cassette in a substantially rectangular cassette containing a disc-shaped magnetic recording medium therein. and two through-holes for preventing re-recording, which are arranged approximately laterally symmetrically around the opening and at positions outside the disk-shaped magnetic recording medium area, and two through-holes for preventing re-recording are provided in the vicinity of the through-holes for preventing re-recording. a shielding member movable between a state position in which the through-hole for re-recording prevention is blocked and a state position in which it is opened; and a movement prevention means for preventing the shielding member from inadvertently moving to a different state position. , wherein the shielding member does not at least protrude from the surface of the cassette, and the movement of the shielding member is prevented by the movement preventing means to maintain a shielded state or an open state by the shielding member. It was adopted.
以下、図面に示す実施例に基づいて本考案の詳
細を説明する。 Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.
第１図及び第２図は本考案の一実施例を説明す
るもので、図において全体を符号１で示す磁気シ
ートカセツトは上下のカセツトハーフ１ａ，１ｂ
を突き合わせて一体化させ、内部には図示を省略
した円板状の磁気シートを収容している。この磁
気シートカセツト１の中央部にはクランプ機構等
が嵌入するセンターホール２が形成され、これを
挟んでインデツクスウインド３，３が形成されて
いる。また磁気シートカセツト１の装着方向先端
側には磁気ヘツドが嵌入するヘツドウインド４が
形成され、このヘツドウインド４と反対側には磁
気シートのどの面が上側に位置しているかを示す
サイド表示部５が形成されており、このサイド表
示部５にはＡ面あるいはＢ面であることを示すシ
ール等が貼着される。 FIGS. 1 and 2 illustrate an embodiment of the present invention. In the figures, a magnetic sheet cassette, designated as a whole by reference numeral 1, has upper and lower cassette halves 1a and 1b.
They are butted together and integrated, and a disc-shaped magnetic sheet (not shown) is housed inside. A center hole 2 into which a clamp mechanism or the like is fitted is formed in the center of the magnetic sheet cassette 1, and index windows 3, 3 are formed on either side of the center hole 2. Further, a head window 4 into which a magnetic head is inserted is formed on the leading end side of the magnetic sheet cassette 1 in the mounting direction, and a side display section on the opposite side from the head window 4 shows which side of the magnetic sheet is located on the upper side. 5 is formed, and a sticker or the like indicating that it is the A side or the B side is pasted on this side display section 5.
一方、磁気シートカセツト１の装着方向先端側
の両端部には再記録防止を検出するための透孔６
が、ヘツドウインド４を中心としてほぼ対称で、
かつ内部の磁気シートから外れた位置に図示のよ
うに互いに離間して２つ形成されている。そして
図示のように夫々の透孔６の近傍の同一面側には
夫々凹所が設けられ、夫々の凹所内には遮蔽板７
のそれぞれがその一端をピン８を介して磁気シー
トカセツト１に対し回動自在に軸承されている。
この遮蔽版７は第１図に実線で示すようにその自
由端側が透孔６を閉塞する位置と、鎖線で示すよ
うに透孔６を開放する位置とに自由に回動でき
る。 On the other hand, at both ends of the magnetic sheet cassette 1 on the front end side in the mounting direction, there are through holes 6 for detecting re-recording prevention.
is almost symmetrical around head window 4,
As shown in the figure, two are formed at positions apart from the internal magnetic sheet and spaced apart from each other. As shown in the figure, a recess is provided on the same side near each through hole 6, and a shielding plate 7 is provided in each recess.
Each of the magnetic sheet cassettes 1 has one end rotatably supported on the magnetic sheet cassette 1 via a pin 8.
This shielding plate 7 can freely rotate between a position where its free end side closes the through hole 6, as shown by a solid line in FIG. 1, and a position where the through hole 6 is opened, as shown by a chain line.
従つて、遮蔽板７によつて透孔６が遮蔽された
状態にあつては、磁気シートカセツト１は記録再
生装置側に装着された場合には、第１図に示すよ
うに装置側に設けられた再記録防止検出手段であ
る発光素子９と受光素子１０との間の光路が遮蔽
され、再記録防止であることが検出され、制御回
路が作動して記録防止モードとなる。 Therefore, when the through hole 6 is shielded by the shielding plate 7, when the magnetic sheet cassette 1 is mounted on the recording/reproducing apparatus side, the magnetic sheet cassette 1 is installed on the apparatus side as shown in FIG. The optical path between the light-emitting element 9 and the light-receiving element 10, which are re-recording prevention detecting means, is blocked, it is detected that re-recording is to be prevented, and the control circuit is activated to enter the recording-preventing mode.
ところで、遮蔽板７は例えば弾力のある合成樹
脂などから形成されていれば、指先等によつて回
動させた位置において磁気シートカセツト１の側
面に押圧されるため、その位置を確実に保持する
ことができるが、外力が加わつた場合にずれてし
まう恐れがある。そこで、本考案においては、透
孔６の近傍に膨出部１１を形成することにより、
透孔６を開放する場合には遮蔽板７の自由端部を
この膨出部１１を乗り越えさせた位置に回動させ
ることによつて透孔６を閉塞する位置に移動しな
いようにするとともに、透孔６を閉塞した状態が
ずれないようにした構造が採用されている。この
ようにすれば、遮蔽板７を正確に保つことがで
き、誤動作を防止することが可能である。 By the way, if the shielding plate 7 is made of, for example, elastic synthetic resin, it will be pressed against the side surface of the magnetic sheet cassette 1 at the position where it is rotated by a fingertip or the like, so that it will reliably hold that position. However, there is a risk that it may shift if external force is applied. Therefore, in the present invention, by forming the bulge 11 near the through hole 6,
When opening the through hole 6, the free end of the shielding plate 7 is rotated to a position where it passes over the bulge 11, thereby preventing the through hole 6 from being moved to a position where it is closed. A structure is adopted that prevents the through hole 6 from shifting from its closed state. In this way, the shielding plate 7 can be maintained accurately and malfunctions can be prevented.
本実施例にあつては、遮蔽板７は磁気シートカ
セツト１自身に取り付けられているため、別部材
として他の位置にないため紛失する恐れが全くな
く、接着剤等をはがす必要もなく、磁気シートカ
セツト１を損傷することもなく、確実に再記録防
止機能を発揮することができる。 In this embodiment, since the shielding plate 7 is attached to the magnetic sheet cassette 1 itself, there is no risk of it being lost as it is not placed in any other position as a separate member, and there is no need to remove adhesive or the like. The sheet cassette 1 is not damaged and the re-recording prevention function can be reliably exhibited.
以上の説明から明らかなように、本考案によれ
ば、略方形でその内部に円板状磁気記録媒体を内
蔵するカセツトにおいて、該カセツトの略中心線
上に位置する記録または読取り手段のための開口
部と、該開口部を中心とし略左右対称且つ前記円
板状磁気記録媒体領域から外れた位置に配置され
た２つの再記録防止用透穴と、該再記録防止用透
穴の近傍に設けられ前記再記録防止用透穴を遮蔽
する状態位置と、開放する状態位置との間で移動
し得る遮蔽部材と、該遮蔽部材が異なる状態位置
へ不用意に移動することを阻止する移動阻止手段
とを有し、前記遮蔽部材が前記カセツトの表面か
ら少なくとも突出しないとともに、該遮蔽部材の
移動を前記移動阻止手段にて阻止して前記遮蔽部
材による遮蔽状態あるいは開放状態を維持し得る
ようにした構造を採用しているため、従来のシー
ルや蓋などのように磁気シートカセツト側に損傷
を与えたり紛失する恐れがなく、確実に再記録防
止用機能を発揮することができるという優れた利
点がある。 As is clear from the above description, according to the present invention, in a substantially rectangular cassette containing a disk-shaped magnetic recording medium therein, an opening for recording or reading means located substantially on the center line of the cassette is provided. a hole for preventing re-recording, and two through-holes for preventing re-recording, which are arranged approximately laterally symmetrically around the opening and at positions outside the disk-shaped magnetic recording medium area, and provided in the vicinity of the through-hole for preventing re-recording. a shielding member that is movable between a state position where the through-hole for re-recording prevention is shielded and a state position where it is opened; and a movement prevention means that prevents the shielding member from inadvertently moving to a different state position. The shielding member does not at least protrude from the surface of the cassette, and the movement of the shielding member is prevented by the movement preventing means to maintain a shielded state or an open state by the shielding member. Because of this structure, there is no risk of damaging or losing the magnetic sheet cassette like with conventional seals and lids, and it has the excellent advantage of being able to reliably perform the re-recording prevention function. be.
また本考案によれば、遮蔽部材のそれぞれがカ
セツトの表面から突出することがないので、遮蔽
部材が使用者の意志によらずに何かに引掛かつて
透孔を開閉してしまうという事故を防ぐことがで
きるという効果が得られる。 Further, according to the present invention, since each of the shielding members does not protrude from the surface of the cassette, it is possible to prevent an accident in which the shielding member gets caught on something against the user's will and opens or closes the through hole. You can get the effect that you can.
さらに本考案によれば、遮蔽部材が遮蔽状態位
置と開放状態位置との間で不用意に移動してしま
うことを移動阻止手段（実施例では膨出部１１）
により防止することができ、この遮蔽部材のカセ
ツト表面からの突出を無くして引つ掛かりによる
不用意な移動を防止することと相侯つてこの遮蔽
部材により再記録防止機能をより一層確実なもの
にすることができる。 Further, according to the present invention, the movement preventing means (in the embodiment, the bulge 11) prevents the shielding member from moving inadvertently between the shielding state position and the open state position.
By eliminating the protrusion of this shielding member from the cassette surface, it is possible to prevent accidental movement due to snagging, and at the same time, this shielding member makes the re-recording prevention function even more reliable. can do.
第１図は本考案の一実施例を説明する磁気シー
トカセツトの斜視図、第２図は一部拡大縦断側面
図である。
１……磁気シートカセツト、２……センターホ
ール、３……インデツクスウインド、４……ヘツ
ドウインド、６……透孔、７……遮蔽板、８……
ピン、９……発光素子、１０……受光素子、１１
……膨出部。
FIG. 1 is a perspective view of a magnetic sheet cassette illustrating an embodiment of the present invention, and FIG. 2 is a partially enlarged longitudinal sectional side view. 1... Magnetic sheet cassette, 2... Center hole, 3... Index window, 4... Head window, 6... Through hole, 7... Shielding plate, 8...
Pin, 9... Light emitting element, 10... Light receiving element, 11
...bulge.
Claims (1)
するカセツトにおいて、 該カセツトの略中心線上に位置する記録または
読取り手段のための開口部と、 該開口部を中心とし略左右対称且つ前記円板状
磁気記録媒体領域から外れた位置に配置された２
つの再記録防止用透穴と、 該再記録防止用透穴の近傍に設けられ前記再記
録防止用透穴を遮蔽する状態位置と、開放する状
態位置との間で移動し得る遮蔽部材と、 該遮蔽部材が異なる状態位置へ不用意に移動す
ることを阻止する移動阻止手段とを有し、 前記遮蔽部材が前記カセツトの表面から少なく
とも突出しないとともに、該遮蔽部材の移動を前
記移動阻止手段にて阻止して前記遮蔽部材による
遮蔽状態あるいは開放状態を維持し得ることを特
徴とするカセツト。[Scope of Claim for Utility Model Registration] A substantially rectangular cassette containing a disc-shaped magnetic recording medium therein, an opening for recording or reading means located approximately on the center line of the cassette; 2 arranged at positions substantially symmetrical about the center and away from the disk-shaped magnetic recording medium area;
a shielding member provided near the re-recording prevention through-hole and movable between a position in which the re-recording prevention through-hole is shielded and a position in which it is opened; movement prevention means for preventing the shielding member from inadvertently moving to a different state position, the shielding member at least not protruding from the surface of the cassette, and the movement prevention means preventing movement of the shielding member. A cassette characterized in that the shielding state or the open state by the shielding member can be maintained by blocking the shielding member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988165698U JPH0424551Y2 (en) | 1988-12-23 | 1988-12-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988165698U JPH0424551Y2 (en) | 1988-12-23 | 1988-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01121181U JPH01121181U (en) | 1989-08-16 |
| JPH0424551Y2 true JPH0424551Y2 (en) | 1992-06-10 |
Family
ID=31452421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988165698U Expired JPH0424551Y2 (en) | 1988-12-23 | 1988-12-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0424551Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58122271U (en) * | 1982-02-10 | 1983-08-19 | 日立マクセル株式会社 | disk cartridge |
| JPS58140586U (en) * | 1982-03-09 | 1983-09-21 | キヤノン電子株式会社 | cassette |
-
1988
- 1988-12-23 JP JP1988165698U patent/JPH0424551Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01121181U (en) | 1989-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0669617B1 (en) | Disc cartridge with a shutter | |
| KR890015255A (en) | Disc cartridge | |
| JP3670716B2 (en) | Shutter dust-proof structure of disk drive device | |
| US4631618A (en) | Tape cassette with protection cover and tape end sensing means | |
| GB2090226A (en) | Magnetic recording cassettes having an erroneous erasure preventing device | |
| JPH04289572A (en) | Disk cartridge | |
| US5390871A (en) | Low cost video cassette with light screen | |
| ATE167749T1 (en) | RECORD CASSETTE | |
| KR960011976A (en) | Disc cartridge | |
| KR930006694A (en) | Disc record protection device | |
| JPH054752B2 (en) | ||
| US4530017A (en) | Magnetic recording disk cartridge | |
| JPH0424551Y2 (en) | ||
| KR950015349A (en) | Disk cartridge unit | |
| US5168411A (en) | Tape cassette and recording and/or reproducing apparatus therefor having cooperative elements for opening cassette lid | |
| JPS637989Y2 (en) | ||
| JP2502045B2 (en) | cassette | |
| KR970023265A (en) | Disc cartridge unit and its label | |
| JPH0413799Y2 (en) | ||
| JP3549215B2 (en) | Tape cassette | |
| JPS5810183Y2 (en) | Magnetic tape demagnetizer | |
| JPH064476Y2 (en) | Tape cassette | |
| KR930018576A (en) | Tape cassette | |
| JPH0519913Y2 (en) | ||
| JPS6122485A (en) | Magnetic tape cassette |