JPS6353063A - Transparent sheet printing system in thermal transfer printer - Google Patents

Transparent sheet printing system in thermal transfer printer

Info

Publication number
JPS6353063A
JPS6353063A JP19710986A JP19710986A JPS6353063A JP S6353063 A JPS6353063 A JP S6353063A JP 19710986 A JP19710986 A JP 19710986A JP 19710986 A JP19710986 A JP 19710986A JP S6353063 A JPS6353063 A JP S6353063A
Authority
JP
Japan
Prior art keywords
printing
sheet
paper
plastic sheet
cover paper
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
Application number
JP19710986A
Other languages
Japanese (ja)
Inventor
Masashi Yoshida
雅志 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP19710986A priority Critical patent/JPS6353063A/en
Publication of JPS6353063A publication Critical patent/JPS6353063A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To automatically feed papers one at a time, by superposing cover paper, which is formed into a window frame shape wherein the central part of a printing range is cut out, to the surface on the side opposite to the image receiving surface of a transparent plastic sheet. CONSTITUTION:When printing is performed in such a stage that cover paper is superposed to a plastic sheet for printing, both of them are fed from a platen drum side between a platen drum 1 and a thermal head 3 in a state superposed and adhered under pressure in the order of the cover sheet 21, the plastic sheet 20, ink paper 8 and the thermal head 3. At this time, when the central part of the cover paper is cut out to a certain range, the plastic sheet 20 receives driving force from the part directly contacting the platen drum along with the cover paper 21. By this constitution, unlike the case of cover paper of a type covering the entire surface of the plastic sheet, no slip is generated between the plastic sheet and the cover paper and the plastic sheet is accurately fed according to the rotational quantity of the platen drum.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はインク紙と記録紙を用いる熱転写式プリンタに
係り、特にOHP用シー)K好適なプラスチック製透明
シートの印字方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal transfer printer using ink paper and recording paper, and more particularly to a method for printing on transparent plastic sheets suitable for OHP use.

〔従来の技術〕[Conventional technology]

従来この種の装置とし℃関連するものには、特公昭58
−58239に記載のようにホッパー内にプラスチック
カードが多数枚収納されていて、最下位のカードを往復
動可能なピッカーとスロートナイフにより1枚ずつ取り
出し印字を行うものがある、しかしこの装置ではプラス
チックカードの摺動等により発生する静電気洗つい℃は
全(配慮されておよす、又カードが透明の場合プリント
操作制御上に必要な光等による非接触式の位置検出も困
難であった。
Conventionally, this type of device related to ℃ is
-58239, there is a device in which a large number of plastic cards are stored in a hopper, and the lowest card is taken out one by one using a reciprocating picker and a throat knife, and printed on the plastic card. Static electricity generated by sliding of the card, etc., has been carefully considered, and if the card is transparent, non-contact position detection using light, etc., which is necessary for printing operation control, is also difficult.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従つ℃、従来は静電気によるカード同志のくっつきが発
生し、複数のカードが同時圧送り出されて搬送系でジャ
ミングを起こしたり、時にはビツカーの駆動力が足らな
くて全く搬送されないこともあった。又カードがOHP
用シートのように透明の場合は、例えば印字スタートの
位置検出等にカードのエツジ或いはカード上のマークを
光学的にセンスする方式の装置では、透明シート上に印
刷等でセンス部を着色する必要があり、印刷層にOHP
で使用する際に目ざわりとなった。そこで、これを解決
する案として、静電気を帯びに(いカバー紙をプラスチ
ック製カードの印字面と反対側へ重ね合わせて使用する
方法が考えられる。しかし、この方法で’tt、サーマ
ルヘッドとプラテンの間に圧着されて搬送及び、印字を
行っている時に、プラスチック製カードとカバー紙間の
接着等が不可能な印字部で滑りを生じ、プラテンの回転
量とカードの送り量にズレが発生し画質に悪影響を及ぼ
すことがある。特に複数目玉ね印字を行うカラー印字で
は色ズレとなって現れる為、採用が困難であった。
Therefore, in the past, static electricity caused cards to stick together, causing jamming in the conveyance system due to multiple cards being fed out at the same time, and sometimes not being conveyed at all due to insufficient driving force of the bitcher. Also, the card is OHP
For example, in the case of a transparent sheet such as a printing sheet, for example, in a device that optically senses the edge of the card or a mark on the card to detect the print start position, it is necessary to color the sense part by printing on the transparent sheet. There is OHP on the printing layer.
It was annoying when I used it. Therefore, one possible solution to this problem is to use cover paper, which is charged with static electricity, on the side opposite to the print surface of the plastic card. However, with this method, the thermal head and platen During conveyance and printing, slippage occurs at the printing area where adhesion between the plastic card and cover paper is impossible, resulting in a discrepancy between the amount of rotation of the platen and the amount of card feed. This may have a negative effect on image quality.Especially in color printing where multiple eyeballs are printed, color misregistration appears, making it difficult to use.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の目的は、○HPシートのような透明プラスチッ
クシートにインク紙を用いた熱転写式の印字を行うのに
、−枚ずつの自動的な給紙が可能で、かつ光センサー等
非接触の高精度な位置検出によりプリント制御が可能な
プリント方法を提供することにある。
The purpose of the present invention is to: ○ enable automatic paper feeding one sheet at a time when performing thermal transfer printing using ink paper on transparent plastic sheets such as HP sheets, and non-contact technology such as optical sensors. An object of the present invention is to provide a printing method that allows printing control using highly accurate position detection.

上記目的は、透明プラスチックシートに対し、このシー
トの受像面と反対側の面に静電気を帯にくいカバー紙を
重ね、該カバー紙は少なくとも印字範囲の中央部を切り
抜いた窓枠状の形とすることにより、達成されろ。
The above purpose is to overlay a transparent plastic sheet with a cover paper that does not attract static electricity on the opposite side of the sheet from the image receiving surface, and the cover paper is shaped like a window frame with at least the center of the printing area cut out. By doing so, it will be achieved.

〔作用〕[Effect]

印字用のプラスチックシートにカバー紙を重ねて印字を
行うと、プラテンドラムとサーマルヘッドの間は、プラ
テンドラム側から、カバー紙、プラスチックシート、イ
ンク紙そしてサーマルヘッドの順江重なって圧着搬送さ
れることになる。1:の時、カバー紙の中央部がある範
囲切り扱かれているとプラスチックシートはカバー紙と
共に直接プラテンドラムに接触する部分より駆動力を受
けろことになるから、全面を覆うタイプのカバー紙の場
合と異なり、プラスチックシートとカバー紙間で滑りを
生ずることがなく、プラテンドラムの回転量に従ってプ
ラスチックシートは正確に搬送されろことになる。さら
てカバー紙が付与されろ為、プラスチックシート同志の
静電気による吸着も防げ、又カバー紙を有色又はマー刀
−を付けることによって、普通紙と同樺にプリント操作
上の制御も光学的センサーを用いてより正確に行うこと
ができる。
When printing is performed by overlapping cover paper on a plastic sheet for printing, the cover paper, plastic sheet, ink paper, and thermal head are overlapped and conveyed by pressure between the platen drum and the thermal head from the platen drum side. It turns out. 1: If the center of the cover paper is cut in a certain area, the plastic sheet will receive the driving force from the part that directly contacts the platen drum along with the cover paper, so it is better to use cover paper that covers the entire surface. Unlike the conventional case, there is no slippage between the plastic sheet and the cover paper, and the plastic sheet is accurately conveyed according to the amount of rotation of the platen drum. Furthermore, since the cover paper is attached, it is possible to prevent the plastic sheets from adhering to each other due to static electricity, and by adding a colored or marked cover to the cover paper, optical sensors can be used to control printing operations on birch paper as well as plain paper. This can be done more accurately using

〔実施例〕〔Example〕

以下、本発明の一実施例を第1図〜第3図により説明す
る。第1図は熱転写式プリンタのメカニズム概要を示す
側面図で、1はプラテンドラムで図示せぬがモーターよ
りr、動力を受けて矢印方向へ軸2の回りを回転するよ
う構成された黒色のゴムローラーである。アーム4は軸
50回りを回動可能Vこ取り付けられサーマルヘッド3
が一体的に固着されている。ここでサーマルヘッド3は
アーム4とケース7との間に配置された発条6により、
プラテンドラム1を常時圧Mするようになっている。8
はプラスチックシート等のベースフィルムに固体インク
が塗布されているインク紙で、繰出し軸10からプラテ
ンドラム1とサーマルヘッド30間に通り、ガイドビン
11で変向させられ巷取り軸9に到って張架されるが、
繰出し軸10には使用前のインク紙8bがボビン状に巻
かれ回軸可能に軸支されている。一方、巻取り軸9は、
使用済みのインク紙8αをボビン状に巻取るようにモー
ター(図示せぬ)から回転駆動を受けるものである。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Figure 1 is a side view showing an outline of the mechanism of a thermal transfer printer, in which 1 is a platen drum (not shown), which is made of black rubber that is configured to receive power from a motor and rotate around an axis 2 in the direction of the arrow. It's a roller. The arm 4 can rotate around the axis 50 and is attached to the thermal head 3.
are integrally fixed. Here, the thermal head 3 is operated by a spring 6 disposed between the arm 4 and the case 7.
The platen drum 1 is kept under constant pressure M. 8
is an ink paper made of a base film such as a plastic sheet coated with solid ink, which passes from the feed shaft 10 between the platen drum 1 and the thermal head 30, is changed direction by the guide bin 11, and reaches the width shaft 9. Although it is strung up,
Ink paper 8b before use is wound around the feed shaft 10 in a bobbin shape and rotatably supported. On the other hand, the winding shaft 9 is
It receives rotational drive from a motor (not shown) so as to wind up the used ink paper 8α into a bobbin shape.

凹型筐体部16には記録用の透明シート20が重ねて収
納されるも受像面側が下向きに、又受像面と反対側の面
には第2図に示したように、外形が透明シート20とほ
ぼ同じ犬ぎさで、中央部が少なくとも印字範囲より広い
エリアの開口部21aを設げた窓枠状の白色のカバー紙
21が重ねられ、重送方向の端部21j及び21Cは軽
く接着処理がなされている。尚、カバー紙21の材質は
透明シート20に発生する静電気を十分遮断しうるもの
である。ここで透明シート20は筐体部16内の受板1
7の上て載っており、受板17は筐体16内のピン18
の回りを回励可能に取り付けられている。ローラー14
は軸15の回りを常に時計方向の回転駆動を与えられて
おり、上部には阪バネ22が軽く押圧されている。凹型
筐体部16の左上部164は上方の案内壁21との間に
1プリント分のシートを通過させるだけのスキ間が設け
ちれ、送られてきた紙の分離機能を有している。9体部
16の延長はプラテンドラム1の外周に沿って設けられ
たわん曲案内壁28につながっている。ローラ12は軸
13の回りをプラテンドラム1の外周に当接して回転可
能に取付けられている。24は軸25を中心に回動可能
なシートの排出レバーで、図示せぬともソレノイド等の
アークチェーターに連結されているものとする。レバー
24は図1で反時計方向へ回動することによって、爪部
24αがプラテンドラム1の外周に当接するよう配され
ている。
Transparent sheets 20 for recording are stacked and stored in the concave housing 16, with the image-receiving surface facing downward, and the outer shape of the transparent sheet 20 on the opposite side to the image-receiving surface as shown in FIG. A window-frame-shaped white cover paper 21 with an opening 21a having an area wider than the printing area at least in the center is stacked with almost the same dog-edge as , and the edges 21j and 21C in the double feeding direction are lightly adhesive-treated. being done. The material of the cover paper 21 is one that can sufficiently block static electricity generated in the transparent sheet 20. Here, the transparent sheet 20 is the receiving plate 1 inside the housing section 16.
7 and the receiving plate 17 is placed on the pin 18 inside the housing 16.
It is attached so that it can be rotated around. roller 14
is always driven clockwise around a shaft 15, and a spring spring 22 is lightly pressed against the upper part. A gap is provided between the upper left portion 164 of the concave housing portion 16 and the upper guide wall 21 to allow a sheet for one print to pass therethrough, and has the function of separating fed paper. The extension of the nine-body portion 16 is connected to a curved guide wall 28 provided along the outer periphery of the platen drum 1. The roller 12 is rotatably mounted around a shaft 13 in contact with the outer periphery of the platen drum 1. Reference numeral 24 denotes a sheet ejection lever rotatable about a shaft 25, which is connected to an arcuator such as a solenoid (not shown). The lever 24 is arranged so that the claw portion 24α comes into contact with the outer periphery of the platen drum 1 when the lever 24 is rotated counterclockwise in FIG.

又、案内壁27には、発光部と受光部をCQえたフォト
センサー26が埋込まれ、プラテンドラム1外周の黒色
と紙等の白色を判別できろものである。
Further, a photosensor 26 having a light emitting part and a light receiving part arranged in CQ is embedded in the guide wall 27, and can distinguish between the black color of the outer periphery of the platen drum 1 and the white color of paper or the like.

以上の構成に基づく動作の説明を次に行う。まずプリン
ト釦(図示せぬ)が押されると、プラテンドラム1及び
ローラー14はそれぞれ矢印方向へ回転を始める。同時
に受板17はソレノイド等にリンクされた駆動レバー(
図示せぬ)により矢印A方向に短時間だけ蹴り上げられ
、一番上の透明シート20及び、これに重ねられている
カバー紙21はローラー14に当接、押圧されてプラテ
ンドラム1方向へ移動を開始する。この時、移動した透
明シート20の受像面は、すぐ下にある透明シート20
 0力バー紙21′に対し摺動するが、カバー紙21′
の効果で透明シート同志の静電気によるはりつきが防止
されているので、16a部からは1プリント分のシート
のみが容易に通過でき、プラテンドラム1の外周に到る
。記録用シートは20 、21が重なったままで、ロー
ラー12での駆動を受け、案内壁28だ案内されてプラ
テンドラム1の外周に溢って移動を続け、やがてプラテ
ンドラム1とインク紙80間に浸入する。この時インク
紙8の繰出し軸10は制動され、巻取り軸9は駆動され
ていない為、インク紙8は移動せず、透明シート20の
受像面ばインク紙8とスリップしながらプラテンドラム
1と一体的にさらに移動し、やがてフォトセンサー26
の真下にやって来る。これによりフォトセンサー26ハ
プラテンドラム1の黒色から透明シート20を通して見
えるカバー紙21の白色への変化な検知することになり
、この信号にてサーマルヘッド3へは信号に応じた通電
が行われ、同時にインク紙80巻取り軸9の駆動と繰出
し軸10の制動も解除されてプリント動作が開始される
The operation based on the above configuration will be explained next. First, when a print button (not shown) is pressed, the platen drum 1 and roller 14 start rotating in the directions of the arrows. At the same time, the receiving plate 17 is connected to a drive lever (
(not shown) for a short period of time in the direction of arrow A, the top transparent sheet 20 and the cover paper 21 overlaid thereon come into contact with the roller 14, are pressed, and are moved in the direction of the platen drum 1. Start. At this time, the image receiving surface of the moved transparent sheet 20 is the same as that of the transparent sheet 20 immediately below.
It slides against the zero force bar paper 21', but the cover paper 21'
Since the transparent sheets are prevented from sticking together due to static electricity, only the sheet for one print can easily pass through the section 16a and reach the outer periphery of the platen drum 1. The recording sheets 20 and 21 remain overlapped, are driven by the roller 12, are guided by the guide wall 28, continue to move over the outer periphery of the platen drum 1, and eventually become spaced between the platen drum 1 and the ink paper 80. Infiltrate. At this time, the feed-out shaft 10 of the ink paper 8 is braked and the take-up shaft 9 is not driven, so the ink paper 8 does not move, and the image receiving surface of the transparent sheet 20 slips with the ink paper 8 while sliding against the platen drum 1. They move further together, and eventually the photo sensor 26
comes directly below. As a result, the photo sensor 26 detects a change from the black color of the platen drum 1 to the white color of the cover paper 21 visible through the transparent sheet 20, and in response to this signal, the thermal head 3 is energized according to the signal. At the same time, the drive of the ink paper 80 winding shaft 9 and the braking of the feeding shaft 10 are also released, and the printing operation is started.

次に、この時の記録用シートの搬送状態を第3図、第4
図により説明する。まず透明シート20に対しカバー紙
21が覆われている場合は第3図に示すような構成とな
っている為、透明シート20はインク紙8との間及びカ
バー紙21との間の摩擦係数の微小な小さな駆動力しか
得られない為、透明シート20はこれに加わる搬送系の
外力等でカバー紙21つまりプラテンドラムIVC,対
しスリップを発生し、印字ムラや印字ズレとなってしま
いがちであるがカバー紙21が第2図に示すように21
a部が切り抜かれている為、21a部に重なる透明シー
ト200部分は第4図に示すように直接プラテンドラム
1に当接して、ゴム面との大きな摩擦係数により外力に
対しても充分うち勝つだけの駆動力を得る二とが可能と
なる。従って透明シート20は常にプラテンドラム1と
一体的に移動することンζなるから、正確な送り′(よ
り印字品質が確保される。
Next, the conveyance state of the recording sheet at this time is shown in Figures 3 and 4.
This will be explained using figures. First, when the cover paper 21 covers the transparent sheet 20, the structure is as shown in FIG. Since only a minute driving force can be obtained, the transparent sheet 20 tends to slip against the cover paper 21, that is, the platen drum IVC, due to the external force of the conveyance system applied to it, resulting in uneven printing or misalignment of printing. However, the cover paper 21 is 21 as shown in FIG.
Since part a is cut out, the part of the transparent sheet 200 that overlaps part 21a comes into direct contact with the platen drum 1 as shown in Figure 4, and the large coefficient of friction with the rubber surface sufficiently overcomes external forces. It becomes possible to obtain the driving force of Therefore, since the transparent sheet 20 always moves integrally with the platen drum 1, accurate feeding (higher printing quality) is ensured.

尚実施例において、カラー印字の場合は記録シート20
 、21は1色印字后、排出レバー24で案内され、さ
らにプラテンドラム1と一体的に(ロ)転を繰り返し、
以下同様の工程で重ね印字が行わる。3色印字后は排出
レバー24がアークチェーターにより矢印B方向へ回動
することにより爪部24aが記録済みシート20の搬送
路を切り換え、案内壁21の上部を通ってローラー14
と板バネ22による。駆動力でフォローされ、やがて案
内壁23上に導か才1てプリント動作が完結する。又、
本実施例でのプリンタは透明シート20の使用について
のみ述べたが、通て・4は白色普通紙を扱って印字する
タイプのプリンタである。
In the embodiment, in the case of color printing, the recording sheet 20
, 21 are guided by the ejection lever 24 after printing in one color, and then repeatedly rotated integrally with the platen drum 1.
Overlapping printing is then performed in the same process. After three-color printing, the ejection lever 24 is rotated in the direction of arrow B by the arcchator, so that the claw portion 24a switches the conveyance path of the recorded sheet 20, passes through the upper part of the guide wall 21, and transfers the recorded sheet 20 to the roller 14.
and by the leaf spring 22. It is followed by the driving force and is eventually guided onto the guide wall 23, completing the printing operation. or,
Although the printer in this embodiment has only been described using the transparent sheet 20, the printer 4 is of a type that handles and prints on plain white paper.

〔発明の効果〕〔Effect of the invention〕

−本発明によれば、OHPシート等のプラスチック製透
明シートも靜屯気によるダブルフィード等のトラブルな
しに自動給紙が可能となり、印字時の送りムラもない正
確なプリントが可能であり、スプリント操作に必要なプ
リント開始等の制御も光学センサーにてシートの位置検
出が可能な為、カラープリントにも十分適用しうろ。さ
らにこのシートに重ねろカバー紙は印字后取り外すこと
もできるが、印字部は覆われていない為、そのままOH
P用の枠紙として使用することが出来る。
-According to the present invention, it is possible to automatically feed plastic transparent sheets such as OHP sheets without problems such as double feeding due to damp air, and it is possible to perform accurate printing without uneven feeding during printing, making it possible to print in a sprint. Since the position of the sheet can be detected using an optical sensor to control the start of printing, etc., which is necessary for operation, it can be applied to color printing as well. Furthermore, the cover paper that overlaps this sheet can be removed after printing, but since the printing area is not covered, it can be used as is.
It can be used as a frame for P.

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

第1図は本発明バー実施例のプリンタメカニズムを示す
側面図、第2図は本発明の一実施例である記録用シート
の構成を示す平面図、第3図、第4図は第1図のシート
搬送状態を示す詳細図である。
FIG. 1 is a side view showing the printer mechanism of an embodiment of the invention, FIG. 2 is a plan view showing the structure of a recording sheet which is an embodiment of the invention, and FIGS. FIG. 3 is a detailed diagram showing the sheet conveyance state of FIG.

Claims (2)

【特許請求の範囲】[Claims] (1)インク紙と記録紙を重ね合わせ、サーマルヘッド
とプラテンドラムによる加熱・加圧にて印字を行う方式
のプリンタにおいて、記録紙として所定大きさにカット
された透明シートを用い、該シートに対し少なくとも印
字範囲を取り除いた窓枠状の別シートを前記シートの受
像面と反対側に重ね合わせた状態にて印字を行うよう構
成したことを特徴とする熱転写式プリンタにおける透明
シートの印字方式。
(1) In a printer that overlaps ink paper and recording paper and prints by heating and applying pressure using a thermal head and platen drum, a transparent sheet cut to a predetermined size is used as the recording paper, and the sheet is A method for printing a transparent sheet in a thermal transfer printer, characterized in that printing is performed by overlapping another sheet in the shape of a window frame with at least the printing area removed on the side opposite to the image receiving surface of the sheet.
(2)前記別シートは不透明とし、このシートの一部又
はこの紙上に付与したマークを光学的センサーによつて
検出することによつて、プリント操作上の制御を行うよ
う構成したことを特徴とする特許請求の範囲第1項記載
の熱転写式プリンタにおける透明シートの印字方式。
(2) The separate sheet is opaque, and the printing operation is controlled by detecting a part of the sheet or a mark provided on the paper using an optical sensor. A printing method for a transparent sheet in a thermal transfer printer according to claim 1.
JP19710986A 1986-08-25 1986-08-25 Transparent sheet printing system in thermal transfer printer Pending JPS6353063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19710986A JPS6353063A (en) 1986-08-25 1986-08-25 Transparent sheet printing system in thermal transfer printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19710986A JPS6353063A (en) 1986-08-25 1986-08-25 Transparent sheet printing system in thermal transfer printer

Publications (1)

Publication Number Publication Date
JPS6353063A true JPS6353063A (en) 1988-03-07

Family

ID=16368879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19710986A Pending JPS6353063A (en) 1986-08-25 1986-08-25 Transparent sheet printing system in thermal transfer printer

Country Status (1)

Country Link
JP (1) JPS6353063A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0451312U (en) * 1990-08-31 1992-04-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0451312U (en) * 1990-08-31 1992-04-30

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