JPH0453078A - Tape cartridge - Google Patents
Tape cartridgeInfo
- Publication number
- JPH0453078A JPH0453078A JP16073190A JP16073190A JPH0453078A JP H0453078 A JPH0453078 A JP H0453078A JP 16073190 A JP16073190 A JP 16073190A JP 16073190 A JP16073190 A JP 16073190A JP H0453078 A JPH0453078 A JP H0453078A
- Authority
- JP
- Japan
- Prior art keywords
- side wall
- light
- hole
- main body
- body case
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 230000007257 malfunction Effects 0.000 abstract description 8
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、テープ端を光学的に検出するプリズムを備え
たテープカートリッジに関し、本体ケースの側壁の表面
形態に改良を加えてテープ端の検出精度の向上を図るに
ある。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tape cartridge equipped with a prism for optically detecting tape ends, and the present invention relates to a tape cartridge equipped with a prism for optically detecting tape ends. The aim is to improve accuracy.
この種のプリズムを内蔵したテープカートリッジに、例
えば第６図に示すＤＡＴのそれがある（特開昭６３−３
１７９９５号公Ｗ）。An example of a tape cartridge with a built-in prism of this type is the DAT shown in Fig. 6 (Japanese Unexamined Patent Publication No. 63-3
No. 17995 W).
そこでは本体ケース１の側壁１６にデツキ側からの検出
光の導入孔１７と導出孔１８とを形成してあり、本体ケ
ース１の内部に前記導入孔１７からの入射光を導出孔１
８からデツキ側に返すためのプリズム１１を備えている
。そして、磁気テープ２は両端に透明のリーダーテープ
を接続してあリ、前述の検出光路を遮る状態で走行し、
検出光がリーダテープ部分で透過するか否かでテープ端
を検出するものとな１．ている。In this case, an introduction hole 17 and an output hole 18 for the detection light from the deck side are formed in the side wall 16 of the main body case 1.
It is equipped with a prism 11 for returning from 8 to the deck side. The magnetic tape 2 has transparent leader tapes connected to both ends, and runs while blocking the aforementioned detection optical path.
The end of the tape is detected based on whether or not the detection light passes through the leader tape portion.1. ing.
〔発明が解決しようとする課題］
しかるに、本体ケース１の側壁１６における導入孔１７
と導出孔１８とのト２下間隔は近接し７てお形成されて
いた。[Problems to be Solved by the Invention] However, the introduction hole 17 in the side wall 16 of the main body case 1
The distance between the guide hole 18 and the guide hole 18 was 7 close to each other.
そのため、デツキ側からプリズム１１に〒る検光の多く
が矢印Ｐで示すごとくプリズム１１に至る受光路り、に
紛れ込み、これでテープ端検出の誤動作を招くおそれが
あった。Therefore, much of the light transmitted from the deck side to the prism 11 is mixed into the light receiving path leading to the prism 11 as shown by arrow P, which may cause a malfunction in tape end detection.
そこで本発明の目的は、本体ケース１に前記プリズム１
１を備えたテープカートリッジ番ごおいて、前述の孔間
側壁部分１６ａからの反射光でテープ端検出の誤動作を
招くことを簡単な構成で確実に防止するにある。Therefore, an object of the present invention is to attach the prism 1 to the main body case 1.
The present invention is to reliably prevent a tape end detection malfunction due to reflected light from the above-mentioned inter-hole side wall portion 16a in a tape cartridge equipped with 1 with a simple structure.
〔課題を解決Ａるための１段〕
本発明は、第１図に角、すごとく１本体ケース１（７）
側壁１６にデツキ側の検出光の導入孔】７と導出孔１８
とを形成しζあり 本体ケース１の内部に導入孔１７か
らの入射光を導出孔１８からデ・２．キ側に返ずための
プリズム１１を備えたテープカートリッジにおいて、導
入孔１７と導出孔１８との間に位置する本体ろ−ス１の
孔間側壁部分１にａの外表面が、８ｆ！、細な凹凸面に
形成され′こいることを特徴とする。[First step to solve the problem A] The present invention has a main body case 1 (7) shown in FIG.
Detection light introduction hole]7 and outlet hole 18 on the deck side in the side wall 16
There is a ζ. In a tape cartridge equipped with a prism 11 for returning to the key side, the outer surface of a is 8f! It is characterized by being formed on a finely uneven surface.
更に、この種テープカートリッジにおいて本体ケース１
の孔間側壁部分１６ａの外表面が、デ・ツキ側から導入
孔１７に至る検出光の投光路ｌ２．側に向けて光を反射
させる傾斜面２６に形成されていることを特徴とするも
のである。Furthermore, in this type of tape cartridge, the main body case 1
The outer surface of the inter-hole side wall portion 16a of the hole serves as a detection light projection path l2. It is characterized by being formed on an inclined surface 26 that reflects light toward the side.
孔間側壁部分１（）ａの外表面が微細な凹凸面に形成さ
れていると、投光路Ｉ、１から漏れた検出光の一部が孔
間側壁部分１６ａに当たったきき、当該検出光の−・部
は乱反射して周囲に拡散する。If the outer surface of the inter-hole side wall portion 1()a is formed into a finely uneven surface, a portion of the detection light leaking from the light projection path I, 1 will hit the inter-hole side wall portion 16a, causing the detected light to The - part of the light is diffusely reflected and diffused into the surrounding area.
従って、孔間側壁部分１６ａを微細な凹凸面に形成した
本発明によれば、孔間側壁部分１６ａに当たって乱反射
した検出光の一部が受光路Ｌ２に紛れ込んでも、それは
極めて僅少であるから、デツキ側でのテープ端の検出に
誤動作を生じることを確実に防止できる。Therefore, according to the present invention in which the inter-hole side wall portion 16a is formed into a finely uneven surface, even if a part of the detection light that is diffusely reflected by hitting the inter-hole side wall portion 16a gets mixed into the light receiving path L2, it is extremely small and the deck It is possible to reliably prevent malfunctions in detecting the end of the tape on the side.
孔間側壁部分１６ａの外表面が投光路り、側に向けて検
出光を反射させる反射面に形成されている本発明におい
ても、反射光の−・部が受光路Ｌ２に紛れ込むことをよ
く規制できるから、同様にデツキ側でのテープ端の検出
に誤動作を生じることがない。Even in the present invention, in which the outer surface of the inter-hole side wall portion 16a is formed as a reflective surface that reflects the detection light toward the light projection path, it is possible to prevent the negative part of the reflected light from entering the light reception path L2. Similarly, there is no possibility of malfunction in detecting the end of the tape on the deck side.
しかも、従来の孔間側壁部分１６ａの表面形態に変更を
加えるだけであるから、成形金型面の一部を加工するだ
けでよく、安価に実施できる。Moreover, since only a change is made to the surface form of the conventional inter-hole side wall portion 16a, it is only necessary to process a part of the mold surface, and the process can be carried out at low cost.
〔第１実施例〕
第１図ないし第３図は本発明に係るテープカートリッジ
の第１実施例としてＤＡＴを示している。[First Embodiment] FIGS. 1 to 3 show a DAT as a first embodiment of the tape cartridge according to the present invention.
これの本体ケース１は、プラスチック製の上下ケース１
ａ・１ｂを突き合わせてねじ等で一体的に締結してなる
。本体ケース１の内部左右には磁気テープ２が巻かれる
ハブ３・３が回転自在に収納されている。磁気テープ２
は磁気テープ部分の両端に透光性のリーダテープが接続
されていて、磁気テープ２は該リーダテープを介してハ
ブ３・３に巻かれている。The main case 1 of this is a plastic upper and lower case 1.
A and 1b are butted together and integrally fastened with screws or the like. Hubs 3, around which magnetic tape 2 is wound, are rotatably housed inside the main body case 1 on the left and right sides. magnetic tape 2
Translucent leader tapes are connected to both ends of the magnetic tape portion, and the magnetic tape 2 is wound around hubs 3 via the leader tapes.
第２図において、本体ケース１の前面側の左右にはテー
プ引出口４・４を有し、磁気テープ２は一方のハブ３か
らケース前面側に導出されて他方のハブ３に巻き取られ
る。本体ケース１の前面側には前蓋５が開閉自在に枢着
されており、不使用時には磁気テープ２の前面導出部を
該前蓋５でカバーして保護する。In FIG. 2, the main body case 1 has tape outlet ports 4 on the left and right sides of the front side, and the magnetic tape 2 is led out from one hub 3 to the front side of the case and wound around the other hub 3. A front lid 5 is pivotally attached to the front side of the main body case 1 so as to be openable and closable, and when not in use, the front lead-out portion of the magnetic tape 2 is covered and protected by the front lid 5.
第１図はテープ端の検出構造を示しており、本体ケース
１の内部、すなわち上ケース１ａの内側には、テープ端
検出用のプリズム１１が配設されている。第２図示例で
は本体ケース１の上ケース１ａには二色成形法で透明な
窓板２４およびプリズムエ１を一体成形してあり、第３
図に示すごとくプリズム１１は窓板２４から前方へ連出
し７た連設ｖｉ、２４ａの前端に一体に形成されている
。FIG. 1 shows a tape end detection structure, and a prism 11 for tape end detection is provided inside the main case 1, that is, inside the upper case 1a. In the second illustrated example, a transparent window plate 24 and a prism element 1 are integrally molded on the upper case 1a of the main body case 1 using a two-color molding method, and a third
As shown in the figure, the prism 11 is integrally formed at the front end of the continuous arrangement vi, 24a extending forward from the window plate 24.
このグリズＪ、、 １１は、左右に長い水串部】１ａと
、該水平部１１． ａの左右方向の内端部から下方へ直
角に連続する垂直部１１ｂとを含む断面１５字状に形成
されている。この水平部１．１ ａが前記連設板２４ａ
の前端に連設されている。This Grizz J., 11 has a horizontally long water skewer part]1a, and the horizontal part 11. It is formed in a 15-shaped cross section including a vertical portion 11b that continues downward at right angles from the inner end in the left and right direction of a. This horizontal portion 1.1a is the connecting plate 24a.
is connected to the front end of the
その水平部１１ａは左右方向の外端面が入射側透過面１
２に、内端側上方の４５度斜面が第１反射面１３になる
一方、垂直部１１ｂはその内端側下方の４５度斜面が第
２反射面１４に、外端部の垂直面が出射側透過面１５に
なる。The horizontal part 11a has an outer end surface in the left and right direction as the incident side transmission surface 1.
2, the 45 degree slope on the upper side of the inner end becomes the first reflective surface 13, while the 45 degree slope on the lower side of the vertical part 11b on the inner end side becomes the second reflection surface 14, and the vertical surface on the outer end becomes the light emitting surface. This becomes the side transmission surface 15.
−トゲース１ａの左右の側壁１６には、検出光の導入孔
１７と導出孔１８とが入射側透過面】２および出射側透
過面１５にそれぞれ対向するよう」−下に配し７て開口
しである。プリズム１１の水平部１、 ］、 ａは導入
孔１７の内部に嵌入するよう延出してあり、入射側透過
面１２は本体ケース１の側壁１６の外面と路面−状をな
している。- In the left and right side walls 16 of the toggle 1a, an inlet hole 17 and an outlet hole 18 for the detection light are arranged downwardly and open so as to face the incident-side transmission surface 2 and the output-side transmission surface 15, respectively. It is. The horizontal portion 1, ], a of the prism 11 extends so as to fit into the introduction hole 17, and the incident side transmission surface 12 forms a road surface shape with the outer surface of the side wall 16 of the main body case 1.
磁気テープ２は出射側透過面１５とこれに対向する導出
孔１８との間を通過するよう走行覆る。The magnetic tape 2 runs so as to pass between the output-side transmission surface 15 and the leading-out hole 18 facing thereto.
発光素子２０と受光素子２１にそれぞれ対応する位置関
係にある。They are in a positional relationship corresponding to the light emitting element 20 and the light receiving element 21, respectively.
デツキにテープカートリッジを装填すると、発光素子２
０からの検出光は導入孔１７の内部にあるプリズム１１
の入射側透過面１２に入射する。When the tape cartridge is loaded into the deck, the light emitting element 2
The detection light from 0 is detected by the prism 11 inside the introduction hole 17.
The light enters the incident-side transmission surface 12 of the light beam.
第１図において、符号り、ば検出光路の・）ぢの投光路
を示す。この入射光は第１反射面１３および第２反射面
１４で進行方向がぞれぞれ９０度ずつ変えられて出射側
透過面１５から投光路ｉ−、と平行に出て行き、甲乙こ
磁気テープ２を通って導出孔１８からケース外方に出て
、デツキ側の受光素ｒ２１に達する。第１図において、
符号Ｌ２はかかる検出光路のうちの受光路を示す。この
受光素子２１における光強度により磁気テープ部分か、
これの端に接続された透明リーグテープかが検出される
。In FIG. 1, the reference numerals .) and .) indicate the light projection path of the detection light path. The traveling direction of this incident light is changed by 90 degrees at the first reflecting surface 13 and the second reflecting surface 14, and then exits from the output side transmission surface 15 parallel to the light projection path i-. The light passes through the tape 2 and exits the case from the outlet hole 18, reaching the light receiving element r21 on the deck side. In Figure 1,
Reference numeral L2 indicates a light receiving path among the detection optical paths. Depending on the light intensity at this light-receiving element 21, the magnetic tape portion
A transparent league tape connected to the end of this is detected.
かかる形態のテープカートリッジにおいて、本発明では
、上ケース１ａの左右の側壁１６に設けた導入孔１７と
導出孔１８との間に位置する側壁部分、すなわち孔間側
壁部分１６ａの外表面を梨地状の微細な凹凸面に形成し
、この外表面をざらざらの面にして光を乱反射させるよ
うにしたものである。In this embodiment of the tape cartridge, the outer surface of the side wall portion located between the inlet hole 17 and the outlet hole 18 provided in the left and right side walls 16 of the upper case 1a, that is, the inter-hole side wall portion 16a, is provided with a satin finish. The outer surface is roughened to diffusely reflect light.
これによって、投光路り、から外れた検出光の一部が孔
間側壁部分１６ａの外表面に当たっても、その検出光は
乱反射して周囲に拡散するため、乱反射光が受光路Ｌ２
に紛れ込む量は極めて僅少となる。従ってテープ端の検
出に誤動作を引き起こすことがなくなった。As a result, even if a part of the detection light that deviates from the light projection path hits the outer surface of the inter-hole side wall portion 16a, the detection light is diffusely reflected and diffused to the surroundings, so that the diffusely reflected light is transmitted to the light reception path L2.
The amount that gets mixed in is extremely small. Therefore, there is no possibility of malfunction in detecting the end of the tape.
〔第２実施例〕
第４図は本発明の第２実施例を示しており、孔間側壁部
分１６ａの外表面は、断面山形状の多数の溝２５が連続
する微細な凹凸面に形成されている。これによっても、
該凹凸面で検出光は乱反射して周囲に拡散する。[Second Embodiment] FIG. 4 shows a second embodiment of the present invention, in which the outer surface of the inter-hole side wall portion 16a is formed into a finely uneven surface in which a large number of grooves 25 having a mountain-shaped cross section are continuous. ing. Even with this,
The detection light is diffusely reflected on the uneven surface and diffused to the surroundings.
〔第３実施例］
第５図は本発明の第３実施例を示しており、これは第２
実施例を更に発展させて孔間側壁部分１６ａにひとつの
上向き傾斜面２６を形成しである。[Third Embodiment] FIG. 5 shows a third embodiment of the present invention, which is similar to the second embodiment.
The embodiment is further developed by forming one upwardly inclined surface 26 on the inter-hole side wall portion 16a.
これによると、上方の投光路Ｌ１から漏れた検出光の一
部は、上向き傾斜面２６に当たって上向きに、すなわち
投光路り、側へと反射し、その反射光が受光路Ｌ２に対
して積極的に紛れ込まないよう規制する。According to this, a part of the detection light leaking from the upper light projection path L1 hits the upwardly inclined surface 26 and is reflected upward, that is, toward the light projection path, and the reflected light positively affects the light reception path L2. regulations to prevent it from getting mixed up in
ｃ別実施態様例〕
磁気テープ２は投光路Ｌ 、と受光路Ｌ２のいずれか一
方を横切る状態で走行するものであればよい。Embodiment Example c] The magnetic tape 2 may be of any type as long as it runs across either the light projection path L or the light reception path L2.
導入孔１７と導出孔１８の位置関係は上下逆でもよく、
左右方向に並列していてもよい。The positional relationship between the introduction hole 17 and the outlet hole 18 may be upside down,
They may be arranged in parallel in the left and right direction.
第１図ないし第３図は本発明に係るテープカートリッジ
の第１実施例を示しており、
第１図は要部の拡大縦断正面図、
第２図は全体の斜視図、
第３図は上ケースの斜視図である。
第４図は本発明に係るテープカートリッジの第２実施例
を示す要部の拡大縦断正面図である。
第５図は本発明に係るテープカートリッジの第３実施例
を示す要部の拡大縦断正面図である。
第６図は従来のテープカートリッジを概略的に説明する
要部の拡大縦断側面図である。
１・・・・・本体ケース、
１ａ・・・・上ケース、
１ｂ・・・・下ケース、
２・・・・・磁気テープ、
１６・・・・本体ケースの側壁、
１６ａ・・・孔間側壁部分、
１７・・・・導入孔、
１８・・・・導出孔、
２０・・・・発光素子、
２１・・・・受光素子、
２６・・・・傾斜面、
Ｌ＋、・・・・投光路、
Ｌ２ ・・・・受光路。
発 明 者 隅 １） 孝 志
第
図
第
図
、１1 to 3 show a first embodiment of the tape cartridge according to the present invention, FIG. 1 is an enlarged vertical sectional front view of the main part, FIG. 2 is a perspective view of the whole, and FIG. 3 is a top view. It is a perspective view of a case. FIG. 4 is an enlarged longitudinal sectional front view of the main parts showing a second embodiment of the tape cartridge according to the present invention. FIG. 5 is an enlarged longitudinal sectional front view of the main parts showing a third embodiment of the tape cartridge according to the present invention. FIG. 6 is an enlarged longitudinal sectional side view of the main parts of a conventional tape cartridge. 1...Main case, 1a...Upper case, 1b...Lower case, 2...Magnetic tape, 16...Side wall of main body case, 16a...Between holes Side wall portion, 17...Introduction hole, 18...Outlet hole, 20...Light emitting element, 21...Light receiving element, 26...Slope, L+,...Throwing Optical path, L2...Light receiving path. Inventor Corner 1) Takashi Figure Figure 1
Claims (1)
検出光の導入孔（１７）と導出孔（１８）とを形成して
あり、本体ケース（１）の内部に前記導入孔（１７）か
らの入射光を導出孔（１８）からデッキ側に返すための
プリズム（１１）を備えており、 導入孔（１７）と導出孔（１８）との間に位置する本体
ケース（１）の孔間側壁部分（１６ａ）の外表面が、微
細な凹凸面に形成されていることを特徴とするテープカ
ートリッジ。 ２、本体ケース（１）の側壁（１６）にデッキ側からの
検出光の導入孔（１７）と導出孔（１８）とを形成して
あり、本体ケース（１）の内部に前記導入孔（１７）か
らの入射光を導出孔（１８）からデッキ側に返すための
プリズム（１１）を備えており、 導入孔（１７）と導出孔（１８）との間に位置する本体
ケース（１）の孔間側壁部分（１６ａ）の外表面が、デ
ッキ側から導入孔（１７）に至る検出光の投光路（Ｌ＿
１）側に向けて光を反射させる傾斜面（２６）に形成さ
れていることを特徴とするテープカートリッジ。[Claims] 1. An introduction hole (17) and an outlet hole (18) for detection light from the deck side are formed in the side wall (16) of the main body case (1). A prism (11) is provided inside for returning the incident light from the introduction hole (17) to the deck side through the outlet hole (18), and is located between the introduction hole (17) and the outlet hole (18). A tape cartridge characterized in that the outer surface of the side wall portion (16a) between the holes of the main body case (1) is formed into a finely uneven surface. 2. An introduction hole (17) and an output hole (18) for detection light from the deck side are formed in the side wall (16) of the main body case (1), and the introduction hole (18) is formed inside the main body case (1). The main body case (1) is equipped with a prism (11) for returning the incident light from the main body case (17) to the deck side through the outlet hole (18), and is located between the introduction hole (17) and the outlet hole (18). The outer surface of the side wall portion (16a) between the holes forms the detection light projection path (L_) from the deck side to the introduction hole (17).
1) A tape cartridge characterized by being formed with an inclined surface (26) that reflects light toward the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16073190A JPH0453078A (en) | 1990-06-19 | 1990-06-19 | Tape cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16073190A JPH0453078A (en) | 1990-06-19 | 1990-06-19 | Tape cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0453078A true JPH0453078A (en) | 1992-02-20 |
Family
ID=15721245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16073190A Pending JPH0453078A (en) | 1990-06-19 | 1990-06-19 | Tape cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0453078A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5522562A (en) * | 1992-06-03 | 1996-06-04 | Verbatim Corporation | Tape cartridge and method of making the same |
| US6607155B2 (en) | 2000-09-28 | 2003-08-19 | Victor Company Of Japan Ltd. | Magnetic tape cassette |
| US7085102B2 (en) | 2000-09-01 | 2006-08-01 | Victor Company Of Japan, Ltd. | Tape cassette |
| JP2007161243A (en) * | 2005-12-14 | 2007-06-28 | Goodyear Tire & Rubber Co:The | Pneumatic tire with monofilament reinforcing member |
-
1990
- 1990-06-19 JP JP16073190A patent/JPH0453078A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5522562A (en) * | 1992-06-03 | 1996-06-04 | Verbatim Corporation | Tape cartridge and method of making the same |
| US5758836A (en) * | 1992-06-03 | 1998-06-02 | Verbatim Corporation | Tape cartridge and method of making the same |
| US7085102B2 (en) | 2000-09-01 | 2006-08-01 | Victor Company Of Japan, Ltd. | Tape cassette |
| US6607155B2 (en) | 2000-09-28 | 2003-08-19 | Victor Company Of Japan Ltd. | Magnetic tape cassette |
| JP2007161243A (en) * | 2005-12-14 | 2007-06-28 | Goodyear Tire & Rubber Co:The | Pneumatic tire with monofilament reinforcing member |
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