JPS6121720Y2 - - Google Patents

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Publication number
JPS6121720Y2
JPS6121720Y2 JP1511779U JP1511779U JPS6121720Y2 JP S6121720 Y2 JPS6121720 Y2 JP S6121720Y2 JP 1511779 U JP1511779 U JP 1511779U JP 1511779 U JP1511779 U JP 1511779U JP S6121720 Y2 JPS6121720 Y2 JP S6121720Y2
Authority
JP
Japan
Prior art keywords
strip
shaped carrier
carrier
reel
circumferential surface
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
Application number
JP1511779U
Other languages
Japanese (ja)
Other versions
JPS55117060U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1511779U priority Critical patent/JPS6121720Y2/ja
Publication of JPS55117060U publication Critical patent/JPS55117060U/ja
Application granted granted Critical
Publication of JPS6121720Y2 publication Critical patent/JPS6121720Y2/ja
Expired legal-status Critical Current

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  • Handling Of Continuous Sheets Of Paper (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Conveying Record Carriers (AREA)

Description

【考案の詳細な説明】 本案は供給側のリールにロール状に巻回された
映画フイルム、マイクロフイルム等の帯状担体の
終端部を自動的に検出するための終端部自動検出
装置の改良に関するものである。
[Detailed description of the invention] This invention relates to an improvement of an automatic terminal end detection device for automatically detecting the terminal end of a strip-shaped carrier such as a motion picture film or microfilm wound on a reel on the supply side. It is.

供給側のリールにロール状に巻回された帯状担
体が終端部に達したとき、これを検出し、帯状担
体の駆動を自動的に停止制御したり、該帯状担体
の駆動停止後何等の操作をすることなく帯状担体
を供給側のリールに自動的に巻返すことのできる
自動制御システムは操作の簡易化に好都合である
ため映画機器、マイクロフイルム機器分野におい
て従前より広く実施されている。通常、この種の
自動制御を行うに際して帯状担体が終端部に達し
たことを電気的或いは光学的検出手段で検出する
ため帯状担体の終端部付近に銀或いはスズ等の金
属箔を貼着したり、或いは帯状担体自体に切欠
き、通孔、透明部を形成する等の加工を記録或い
は再生操作に先だつて施さないければならず実用
上必ずしも好ましい方式とはいいがたい。一方、
上述した方式とは別に帯状担体が終端部に達した
とき、帯状担体間に生ずる張力変化を機械的検出
手段で検出することによつて終端部の自動検出を
行う方式も知られている。しかしながらこの種の
方式は帯状担体に対し上述した如き加工を施す手
間が省ける反面、帯状担体の終端部をリールの巻
芯に強固に係止させるための特別な係止部材或い
は係止機構がリール自体に組込まれていなければ
ならず、したがつて、この種方式も必ずしも汎用
的な方式とはいえない。
When the strip-shaped carrier wound in a roll shape on the reel on the supply side reaches the end, this is detected and the drive of the strip-shaped carrier is automatically stopped and controlled, and any operations are performed after the drive of the strip-shaped carrier is stopped. Automatic control systems that can automatically rewind the strip carrier onto the reel on the supply side without having to do so have been widely implemented in the fields of motion picture equipment and microfilm equipment because they are convenient for simplifying operations. Normally, when performing this type of automatic control, a metal foil such as silver or tin is pasted near the end of the band-shaped carrier in order to detect when the band-shaped carrier has reached the end using an electrical or optical detection means. Alternatively, processing such as forming notches, through holes, transparent parts, etc. must be performed on the band-shaped carrier itself prior to recording or reproducing operations, which is not necessarily a preferred method in practice. on the other hand,
In addition to the above-mentioned method, a method is also known in which the terminal end is automatically detected by using mechanical detection means to detect the change in tension that occurs between the strip carriers when the carrier strip reaches the terminal end. However, while this type of method saves the effort of performing the above-mentioned processing on the strip carrier, it requires a special locking member or locking mechanism to firmly lock the end of the strip carrier to the core of the reel. Therefore, this type of system cannot necessarily be said to be a general-purpose system.

一方、本案はリール軸に支承された一対のリー
ルのうち、少なくとも供給側にある一方のリール
にロール状に巻回された帯状担体の外周面に向け
回動付勢されたアームの先端部に、前記外周面に
光信号を投射するための発光手段、前記外周面で
反射した光信号を受光するための受光手段よりな
り帯状担体の終端部の通過を受光手段に到達する
光信号の変化によつて自動的に検出する光学ユニ
ツトを設けると共に、前記帯状担体の外周面上を
回転させることによつて該外周面と前記光学ユニ
ツト間との間隔距離を常に一定量に維持するロー
ラを前記光学ユニツトに近接して設けた構成より
なつているため記録或いは再生に先だつて行う上
述した如き煩雑な加工操作を一切不用にするばか
りでなく、係止部材、係止機構のないリール等あ
らゆる種類のリールに対しても適用することがで
きる。特に、本案装置によれば、帯状担体の終端
部を検出するための光学ユニツトは回動付勢され
ているアームに設けられ、且つ、帯状担体の外周
面上を回転するローラの作用によつて常に帯状担
体の外周面に極く接近した所定位置にあるため発
光手段より格別強力な光信号を投射させる必要が
なく、又、リールの巻芯の径が異なつた場合でも
常に正確な終端部検出を行うことができるため実
用上極めて有利である。
On the other hand, in the present invention, the tip of the arm is biased to rotate toward the outer circumferential surface of the band-shaped carrier wound in a roll shape around at least one of the pair of reels supported on the reel shaft, which is on the supply side. , a light emitting means for projecting an optical signal onto the outer circumferential surface, and a light receiving means for receiving the optical signal reflected on the outer circumferential surface; Therefore, an optical unit for automatic detection is provided, and a roller is provided that rotates on the outer circumferential surface of the strip-shaped carrier to maintain a constant distance between the outer circumferential surface and the optical unit. Because it is constructed close to the unit, it not only eliminates the need for the above-mentioned complicated processing operations prior to recording or playback, but also eliminates the need for all types of reels, such as locking members and reels without locking mechanisms. It can also be applied to reels. In particular, according to the device of the present invention, the optical unit for detecting the terminal end of the strip-shaped carrier is provided on the arm which is rotatably biased, and is detected by the action of the roller rotating on the outer peripheral surface of the strip-shaped carrier. Since it is always located at a predetermined position very close to the outer peripheral surface of the strip carrier, there is no need to project a particularly strong optical signal from a light emitting means, and even if the diameter of the core of the reel differs, the terminal end can always be detected accurately. It is extremely advantageous in practice because it can perform the following steps.

以下、本案装置の一実施例を図面によつて詳細
に説明する。
Hereinafter, one embodiment of the present device will be described in detail with reference to the drawings.

第1図において一対のリール1,2は帯状担体
駆動用のモータによつて駆動されるリール軸3,
4の各々に支承されている。供給側にあるリール
1にロール状に巻回された映画フイルム、マイク
ロフイルム等の帯状担体5は走行路を形成するガ
イドローラ6、記録再生用のゲート7更に別のガ
イドローラ8を経て巻取側にあるリール2に順次
巻取られる。リール1側に設けられたアーム9は
バネ10によつて軸11を支点に反時計方向即ち
リール1に巻回された帯状担体5の外周面5aに
向かつて回動するよう付勢されている。
In FIG. 1, a pair of reels 1 and 2 are connected to a reel shaft 3, which is driven by a motor for driving a strip carrier.
It is supported by each of the four. A strip-shaped carrier 5 such as a movie film or microfilm is wound around a reel 1 on the supply side, and is wound up through a guide roller 6 forming a running path, a gate 7 for recording and reproducing, and another guide roller 8. It is sequentially wound onto a reel 2 on the side. The arm 9 provided on the reel 1 side is urged by a spring 10 to rotate counterclockwise around a shaft 11, that is, toward the outer peripheral surface 5a of the band-shaped carrier 5 wound around the reel 1. .

第2図によつて明らかな通り、前記アーム9の
先端部9aには、発光手段及び受光手段よりなる
光学ユニツト12及びローラ13が互いに近接し
て設けられている。前記光学ユニツト12を構成
する発光手段12aは光信号の前記帯状担体の外
周面5aに投射するためのものであり、又、受光
手段12bは前記外周面5aで反射された光信号
を受光するためのもので各々半導体の発光素子及
び受光素子に対し光信号の投射効率、受光効率を
高めるための簡単な投射光学系及び受光光学系を
付加した構成よりなつている。又、前記ローラ1
3は前記帯状担体5の外周面5aと前記光学ユニ
ツト12との間隔距離を常に一定量に維持させる
もので、その際ローラ自身は帯状担体5の外周面
5a上で回転する。
As is clear from FIG. 2, at the tip 9a of the arm 9, an optical unit 12 consisting of a light emitting means and a light receiving means and a roller 13 are provided close to each other. The light emitting means 12a constituting the optical unit 12 is for projecting an optical signal onto the outer circumferential surface 5a of the strip-shaped carrier, and the light receiving means 12b is for receiving the optical signal reflected on the outer circumferential surface 5a. Each of these devices has a configuration in which a simple projection optical system and light reception optical system are added to a semiconductor light emitting element and light receiving element to improve the projection efficiency and light reception efficiency of optical signals. Moreover, the roller 1
3 is for keeping the distance between the outer circumferential surface 5a of the strip-shaped carrier 5 and the optical unit 12 constant at all times, and at this time the roller itself rotates on the outer circumferential surface 5a of the strip-shaped carrier 5.

第3図は上述したローラ13が前記帯状担体5
の外周面5a上を回転している状態を示したもの
で、この時、光学ユニツト12の発光手段12a
より投射された光信号は帯状担体5の外周面5a
即ちロール状に巻回された帯状担体5の外殻で反
射した後受光手段12bに到達する。
FIG. 3 shows that the roller 13 mentioned above is attached to the belt-shaped carrier 5.
This figure shows a state in which the light emitting means 12a of the optical unit 12 is rotating on the outer peripheral surface 5a of the optical unit 12.
The optical signal projected from the outer peripheral surface 5a of the strip-shaped carrier 5
That is, the light reaches the light receiving means 12b after being reflected by the outer shell of the band-shaped carrier 5 wound into a roll.

第4図は供給側のリール1に巻回された帯状担
体5が終端部に達した状態を示したもので、該終
端部の通過後前記受光手段12aより投射された
光信号は反射率の低いリール1の巻芯1aの外周
面1bで直接反射するための受光手段12bに到
達する光信号は著しく減少する。したがつて受光
手段12bは帯状担体5が終端部に達したことを
受光する光信号の変化によつて直ちに検出するこ
とができる。勿論かゝる検出の際第4図に示す如
く帯状担体5の終端部がリール1の巻芯1aの係
止孔1cに係止されていても該係止孔1cの通過
の際、受光手段12bに到達する光信号は一段と
減少するので、該終端部の通過は正確に検出され
る。
FIG. 4 shows a state in which the strip-shaped carrier 5 wound around the reel 1 on the supply side has reached the terminal end, and after passing through the terminal end, the optical signal projected by the light receiving means 12a has a reflectance. The optical signal reaching the light receiving means 12b for direct reflection on the outer circumferential surface 1b of the winding core 1a of the low reel 1 is significantly reduced. Therefore, the light receiving means 12b can immediately detect that the strip carrier 5 has reached the terminal end by a change in the received optical signal. Of course, in such a detection, even if the terminal end of the strip carrier 5 is locked in the locking hole 1c of the winding core 1a of the reel 1 as shown in FIG. Since the optical signal reaching 12b is further reduced, the passage of the termination is accurately detected.

第5図は第4図とは別形態のリールで帯状担体
5の自動装置に好適なリール1を示したもので第
4図の係止孔1cに相当する係止片1c′がリール
1のフランジ部に形成されているが、第4図と全
く同様にして終端部の検出が行われる。
FIG. 5 shows a reel 1 in a different form from that shown in FIG. 4, which is suitable for an automatic device for a strip carrier 5. A locking piece 1c' corresponding to the locking hole 1c in FIG. Although it is formed on the flange, the terminal end is detected in exactly the same manner as in FIG.

第6図は帯状担体5の終端部を検出するための
具体的な回路構成を示したもので発光手段となる
発光ダイオード12a及び受光手段となるホトト
ランジスタ12bの各々には端子14,15を経
て所定の電源が供給される。比較器16はホトト
ランジスタ12bの出力信号と抵抗17,18で
設定される基準信号を比較するためのもので、得
られる出力信号をモータ制御回路19に加えるこ
とによつて帯状担体駆動用のモータを停止或いは
反転制御することができる。尚、比較器16には
周知の演算増巾器、差動増巾器等を使用すること
ができる。
FIG. 6 shows a specific circuit configuration for detecting the terminal end of the strip carrier 5. A light emitting diode 12a serving as a light emitting means and a phototransistor 12b serving as a light receiving means are connected to each other via terminals 14 and 15. A predetermined power is supplied. The comparator 16 is for comparing the output signal of the phototransistor 12b and the reference signal set by the resistors 17 and 18. By applying the obtained output signal to the motor control circuit 19, the motor for driving the strip carrier is controlled. can be stopped or reversed. Note that a well-known operational amplifier, differential amplifier, etc. can be used for the comparator 16.

次に、本案装置の作用について説明する。 Next, the operation of the present device will be explained.

操作に先だつて供給側のリール1にある帯状担
体5の終端部を第1図に示す所定の走行路を経て
巻取側のリール2に装填する。又周知の方法で予
め退避させておいたアーム9を図示した如く帯状
担体5の外周面5aに向けて回動させる。しかる
後帯状担体駆動用のモータ(図示せず)を起動さ
せることによつて帯状担体5を矢印方向(第1図
参照)に駆動する。帯状担体5の駆動中アーム9
の先端部近傍に設けられたローラ13は常に帯状
担体5の外周面5a上を回転するため光学ユニツ
ト12は第3図に示す如く帯状担体5のロール経
が次第に減少しても外周面5aとの間隔距離は常
に一定量に維持される。この時発光手段12aよ
り投射された光信号は反射率の高い帯状担体5自
身の外周面5a上で反射するため受光手段12b
には反射した光信号が到達したことになる。特
に、前記発光手段12a、受光手段12bを第6
図の如く構成した場合、帯状担体5の駆動中ホト
トランジスタ12bの出力インピーダンスは小と
なつているので比較器16からは何等の信号も生
せず、モータは駆動状態に維持されるので画像の
記録或いは再生は円滑に行われるこになる。一
方、供給側のリール1に巻回された帯状担体5の
ロール径が次第に減少し、第4図に示す如く、そ
の終端部が光学ユニツト12の下を通過すると発
光手段12aからの光信号は反射率の低いリール
1の巻芯1bにおいて反射するため、受光手段1
2bに到達する光信号は著しく減少することにな
る。この時、前記ホトトランジスタ12bの出力
インピーダンスは大となり比較器16よりモータ
制御回路19にモータを停止或いは反転制御する
ための信号が供給されるため、帯状担体5はその
終端部の通過後直ちに停止或いは反転制御される
ことになる。特に、帯状担体5を反転制御する場
合において、帯状担体5の終端部は、第4図に示
す如くその一部がリール1の係止孔1cに留つて
いるためリール1の反転駆動によつて直ちに帯状
担体5の巻返しを行うことができる。一方、第5
図に示すリール1を用いた場合においては、帯状
担体5の終端部は係止片1c′によつて係止される
ため第4図と同様にして帯状担体の自動巻返しが
可能となる。尚、第5図に示すリール1を用いて
自動反転を行う場合、帯状担体5の終端部とアー
ム9の先端部9aとが衝合することもありうるの
で、終端部を検出すると同時にソレノイド等によ
つてアーム9をリール1外に退避させるようにす
るとよい。
Prior to the operation, the terminal end of the strip carrier 5 on the supply reel 1 is loaded onto the take-up reel 2 via a predetermined travel path shown in FIG. Further, the arm 9, which has been evacuated in advance using a well-known method, is rotated toward the outer circumferential surface 5a of the band-shaped carrier 5 as shown. Thereafter, by starting a motor (not shown) for driving the strip carrier 5, the strip carrier 5 is driven in the direction of the arrow (see FIG. 1). Driving arm 9 of belt-shaped carrier 5
Since the roller 13 provided near the tip of the strip carrier 5 always rotates on the outer circumferential surface 5a of the strip carrier 5, the optical unit 12 does not rotate on the outer circumferential surface 5a even if the roll diameter of the strip carrier 5 gradually decreases as shown in FIG. The spacing distance is always maintained constant. At this time, the light signal projected from the light emitting means 12a is reflected on the outer peripheral surface 5a of the strip-shaped carrier 5 itself, which has a high reflectance, so the light receiving means 12b
This means that the reflected optical signal has arrived. In particular, the light emitting means 12a and the light receiving means 12b are
In the case of the configuration shown in the figure, the output impedance of the phototransistor 12b is small while the strip carrier 5 is being driven, so no signal is generated from the comparator 16, and the motor is maintained in the driving state, so that the image is Recording or reproduction will be performed smoothly. On the other hand, as the diameter of the roll of the strip carrier 5 wound around the reel 1 on the supply side gradually decreases, and as the terminal end passes under the optical unit 12 as shown in FIG. Since the light is reflected on the winding core 1b of the reel 1 with low reflectance, the light receiving means 1
The optical signal reaching 2b will be significantly reduced. At this time, the output impedance of the phototransistor 12b becomes large and the comparator 16 supplies a signal for stopping or reversing the motor to the motor control circuit 19, so that the strip carrier 5 stops immediately after passing the terminal end thereof. Or it will be reverse controlled. In particular, when controlling the reversal of the strip carrier 5, the terminal end of the strip carrier 5 is partially retained in the locking hole 1c of the reel 1 as shown in FIG. The belt-shaped carrier 5 can be immediately rewound. On the other hand, the fifth
When the reel 1 shown in the figure is used, the terminal end of the strip carrier 5 is locked by the locking piece 1c', so that the strip carrier can be automatically reeled in the same manner as in FIG. Note that when performing automatic reversal using the reel 1 shown in FIG. 5, the terminal end of the strip carrier 5 and the tip 9a of the arm 9 may come into contact with each other, so the solenoid etc. It is preferable that the arm 9 is retracted to the outside of the reel 1 by.

以上述べた通り、本案装置によれば、簡単な構
成部材をもつてリールに巻回された帯状担体の終
端部検出を正確に行うことができるので実用上極
めて有効である。
As described above, the device of the present invention is extremely effective in practice because it can accurately detect the end of a band-shaped carrier wound around a reel using simple structural members.

尚、本案装置の実施に際し、光学ユニツト及び
ロールを有するアームをリールの供給側、巻取側
の双方に設け、各々のリールが供給側となる場合
に限つて作動するようにすれば、帯状担体の正逆
連続的な駆動制御が可能となる。
In addition, when implementing the present device, if an arm having an optical unit and a roll is provided on both the supply side and take-up side of the reel, and is activated only when each reel is on the supply side, the belt-shaped carrier Continuous forward and reverse drive control is possible.

又、本案実施例によればアームは、帯状担体の
外周面に向かつて回動するよう付勢されている
が、その先端部の回動軌跡が、リールの巻芯中心
を通過するようにするとよい。又、アームは、リ
ールの挿脱を容易に行ないうるようリールから退
避した位置に固定できるようにし、例えば操作ツ
マミと連繋した固定状態を解除するよう構成して
もよい。
Further, according to the embodiment of the present invention, the arm is biased to rotate toward the outer circumferential surface of the band-shaped carrier, but if the rotation locus of the tip of the arm is made to pass through the center of the core of the reel. good. Further, the arm may be configured to be fixed at a position away from the reel so that the reel can be easily inserted and removed, and may be configured to release the fixed state linked to the operating knob, for example.

又、本案実施例においては、帯状担体に映画フ
イルム、マイクロフイルムを用いた場合について
述べたが、その反射率が巻芯の反射率と一定値以
上の差があればいかなる担体でも本案装置に適用
しうることは敢えていうまでもない。
In addition, in the embodiment of the present invention, a case was described in which a motion picture film or a microfilm was used as the strip-shaped carrier, but any carrier can be applied to the present device as long as its reflectance differs from the reflectance of the core by more than a certain value. It goes without saying that it is possible.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本案装置における各種構成部材の配
置を示す配置図である。第2図は第1図の要部外
観図である。第3図、第4図、第5図は、光学ユ
ニツトと帯状担体の外周面との関係位置更に帯状
担体の終端部を検出する際の光学ユニツトの位置
を示すための説明図である。第6図は、本案装置
に適用される回路構成の一例を示した回路構成図
である。 1,2:リール、1a:巻芯、3,4:リール
軸、5:帯状担体、5a:帯状担体の外周面、
9:アーム、9a:アームの先端部、12:光学
ユニツト、12a:発光手段、12b:受光手
段、13:ローラ。
FIG. 1 is a layout diagram showing the arrangement of various constituent members in the present device. FIG. 2 is an external view of the main part of FIG. 1. FIGS. 3, 4, and 5 are explanatory diagrams showing the relative position between the optical unit and the outer circumferential surface of the strip-shaped carrier, as well as the position of the optical unit when detecting the terminal end of the strip-shaped carrier. FIG. 6 is a circuit configuration diagram showing an example of a circuit configuration applied to the present device. 1, 2: reel, 1a: winding core, 3, 4: reel shaft, 5: band-shaped carrier, 5a: outer peripheral surface of band-shaped carrier,
9: arm, 9a: tip of arm, 12: optical unit, 12a: light emitting means, 12b: light receiving means, 13: roller.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] リール軸に支承された一対のリールのうち、少
なくとも供給側にある一方のリールにロール状に
巻回された帯状担体の外周面に向かつて回動する
よう付勢されたアームの先端部に、前記外周面に
光信号を投射するための発光手段、前記外周面で
反射した光信号を受光するための受光手段よりな
り帯状担体の終端部の通過を受光手段に到達する
光信号の変化によつて自動的に検出する光学ユニ
ツトを設けると共に、前記帯状担体の外周面上を
回転させることによつて該外周面と前記光学ユニ
ツト間との間隔距離を常に一定量に維持するロー
ラを前記光学ユニツトに近接して設けたことを特
徴とする帯状担体の終端部自動検出装置。
A distal end of an arm biased to rotate toward the outer peripheral surface of a band-shaped carrier wound in a roll around at least one reel on the supply side of a pair of reels supported on a reel shaft; A light emitting means for projecting an optical signal onto the outer circumferential surface, and a light receiving means for receiving the optical signal reflected on the outer circumferential surface. The optical unit is provided with an optical unit that automatically detects the distance between the strip carrier and the roller that rotates on the outer circumferential surface of the strip-shaped carrier to maintain a constant distance between the outer circumferential surface and the optical unit. 1. An automatic terminal end detection device for a strip-shaped carrier, characterized in that the device is provided in close proximity to the end portion of a strip-shaped carrier.
JP1511779U 1979-02-07 1979-02-07 Expired JPS6121720Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1511779U JPS6121720Y2 (en) 1979-02-07 1979-02-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1511779U JPS6121720Y2 (en) 1979-02-07 1979-02-07

Publications (2)

Publication Number Publication Date
JPS55117060U JPS55117060U (en) 1980-08-18
JPS6121720Y2 true JPS6121720Y2 (en) 1986-06-28

Family

ID=28836255

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1511779U Expired JPS6121720Y2 (en) 1979-02-07 1979-02-07

Country Status (1)

Country Link
JP (1) JPS6121720Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10146552A (en) 1996-11-20 1998-06-02 Kyokuto Sanki Co Ltd Automatic pasting machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10146552A (en) 1996-11-20 1998-06-02 Kyokuto Sanki Co Ltd Automatic pasting machine

Also Published As

Publication number Publication date
JPS55117060U (en) 1980-08-18

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