JPS6392462A - Dot printer - Google Patents
Dot printerInfo
- Publication number
- JPS6392462A JPS6392462A JP23945487A JP23945487A JPS6392462A JP S6392462 A JPS6392462 A JP S6392462A JP 23945487 A JP23945487 A JP 23945487A JP 23945487 A JP23945487 A JP 23945487A JP S6392462 A JPS6392462 A JP S6392462A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- control circuit
- printing
- driver
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000005856 abnormality Effects 0.000 claims abstract description 6
- 230000032258 transport Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 235000016496 Panda oleosa Nutrition 0.000 description 1
- 240000000220 Panda oleosa Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
- B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
- B41J2/30—Control circuits for actuators
Landscapes
- Printers Characterized By Their Purpose (AREA)
- Dot-Matrix Printers And Others (AREA)
Abstract
Description
【発明の詳細な説明】
〔ｌ既要〕
マルチヘッドを用いたドツトプリンタ装置に係り、特に
、印字ヘッド駆動用電源回路の異常を検出することによ
り印字処理の制御を行うようにしたドツトプリンタ装置
に関し、
電磁石機構を駆動させる電源の供給を行う電源回路の容
量が不足しても、装置全体の停止を避け、印字処理が継
続されて行われるようにすることを目的とし、
駆動用電源の電圧低下を検出する検出回路を設けること
により、制御回路は該検出回路の検出信号を受け、電磁
石機構のそれぞれの駆動を印字ヘッド単位に順序を定め
て再駆動させるように制御するように構成する。[Detailed Description of the Invention] [Already Required] The present invention relates to a dot printer device using a multi-head, and in particular, to a dot printer device in which printing processing is controlled by detecting an abnormality in a power supply circuit for driving a print head. The purpose of this is to prevent the entire device from stopping and to continue printing even if the capacity of the power supply circuit that supplies power to drive the electromagnet mechanism is insufficient, by reducing the voltage drop in the drive power supply. By providing a detection circuit for detection, the control circuit is configured to receive a detection signal from the detection circuit and control the driving of each of the electromagnetic mechanisms so as to re-drive each print head in a determined order.
本発明はマルチヘソｔ’を用いたドソトプリンタ装置に
係り、特に、印字へノド駆動用電源回路の異常を検出す
ることにより印字処理の制御を行うようにしたドツトプ
リンタ装置に関する。The present invention relates to a dot printer device using a multi-helical dot t', and more particularly to a dot printer device that controls printing processing by detecting an abnormality in a power supply circuit for driving a print gutter.
ドツトプリンタ装置では、印字すべき印字データ中に漢
字が多く含まれている場合は、アルファヘソＩ・・カナ
文字に比較して字画が増加し、印字ヘッドの駆動速度を
早くしなければ印字処理スピ−１’が低下する。With dot printers, if the print data to be printed includes many kanji characters, the number of strokes will increase compared to alphaheso I... kana characters, and the print processing speed will be reduced unless the print head drive speed is increased. -1' decreases.
そこで、印字処理スピードを低下させないようにマルチ
ヘッドが用いられる。第１図はマルチヘッドの概略を示
す平面図である。Therefore, a multi-head is used so as not to reduce the print processing speed. FIG. 1 is a plan view schematically showing a multi-head.
プラテン２に沿って１般送される媒体３に対して複数の
印字ヘッドＩＡ、 ＩＢ、 ＩＣ，１０を所定の間隔で
配置し、キャリッジ５に搭載されている。A plurality of print heads IA, IB, IC, 10 are arranged at predetermined intervals with respect to a medium 3 that is generally fed along a platen 2, and are mounted on a carriage 5.
印字ヘッドＩＡ、 ＩＢ、 ＩＣ，１０のれそれには複
数の電磁石機構と印字ワイヤを有し、電磁石機構の電磁
コイルに電流を流すことにより印字ワイヤを駆動させ印
字を行う。The print heads IA, IB, IC, 10 each have a plurality of electromagnetic mechanisms and print wires, and by passing current through the electromagnetic coils of the electromagnetic mechanisms, the print wires are driven to perform printing.
キャリッジ５は送り機構（図示されていない）により矢
印Ｅ方向に移送される。Carriage 5 is transported in the direction of arrow E by a transport mechanism (not shown).
そこで、キャリッジ５の移送により印字ヘッドＩＡは八
に示す範囲、印字ヘソｌ” Ｉ ＢはＢ、印字ヘッドＩ
ＣはＣ１印字ヘッドＩＤはＤに示す範囲の印字を行う。Therefore, by moving the carriage 5, the print head IA is moved to the range shown in 8, the print head 1" IB is B, and the print head I
In C, the C1 print head ID prints in the range shown in D.
このような“フルチヘソ１′を用い従来のトソトプリン
タ装置は第２図の回路構成図に示すように構成されてい
た。A conventional Tosoto printer using such a "Fulti Heel 1'" was constructed as shown in the circuit diagram of FIG. 2.
受信された印字データａはラインハソファメモリＬＢに
記憶され、制御回路Ｃの指令によりドライバ制御回路Ｄ
Ｃに送出される。The received print data a is stored in the line sofa memory LB, and is sent to the driver control circuit D according to a command from the control circuit C.
Sent to C.
ドライバ制御回路ＤＣは制御回路Ｃの制御によって、ラ
インハソファメモリＬＢより送出された印字データに従
ってｌ・ライ八回路Ｄ１〜Ｄ、、を駆動さ・せる。トラ
イバ回路り、〜Ｄゎの駆動により電源回路四から電源が
それぞれの印字ヘッドＩＡ、 ｉｌｌ、 ＩＣ，１０の
、例えば、電磁コイルＬ＋”−Ｌｚ４が印字ヘッド１八
に装着され、電磁コイルＬ ２５〜ｌ−４１１が印字ヘ
ッドＩＢに装着されている電磁コイルし、〜Ｉ２ゎに供
給される。電磁コイルＩ７．へ・１．０に電源が供給さ
れることにより印字ワイヤは動作し、印字を行う。Under the control of the control circuit C, the driver control circuit DC drives the L and R8 circuits D1 to D in accordance with the print data sent from the liner sofa memory LB. Power is supplied from the power supply circuit 4 by driving the driver circuit ~Dゎ.For example, the electromagnetic coil L+''-Lz4 of each print head IA, ill, IC, 10 is attached to the print head 18, and the electromagnetic coil L25 ~l-411 is the electromagnetic coil attached to the print head IB, and is supplied to ~I2ゎ.By supplying power to the electromagnetic coil I7.1.0, the print wire operates and prints. conduct.
一方、印字ヘッドＩＬ ＩＢ、 ＩＣ，１０を移送する
キャリッジＣＲは制御回路Ｃによって制御されるキャリ
ッジ制御回路ＣＣの指令によって駆動される。On the other hand, the carriage CR that transports the print heads ILIB, IC, 10 is driven by a command from a carriage control circuit CC controlled by a control circuit C.
このようなドツトプリンタ装置ではドライバ回路Ｄ＋”
Ｄ、が同時に駆動された場合、即ち、印字ワイヤ全ビン
動作を想定して電源回路四の容量を決めると膨大な電源
回路ＰＷが必要となり、高価となる。In such a dot printer device, the driver circuit D+”
If D and D are driven at the same time, that is, if the capacity of the power supply circuit 4 is determined on the assumption that all the printing wires will operate, a huge power supply circuit PW will be required and will be expensive.
従って、一般的には全ビンの約３０％が同時動作可能な
容量としているため、漢字データを用いた場合で、特に
字画の多い印字が連続した時は電源の不足となり、ドツ
トプリンタ装置全体が電源断となる問題を有していた。Therefore, in general, approximately 30% of all bins have a capacity that can be operated at the same time, so when using Kanji data, especially when printing with many strokes continues, there will be a power shortage, and the entire dot printer device will need power. There was a serious problem.
そこで、本発明では、電磁石機構を駆動させる電源の供
給を行う電源回路の容量が不足しても、装置全体の停止
を避け、印字処理が継続されて行ねれるようにすること
を目的とする。Therefore, it is an object of the present invention to avoid stopping the entire apparatus and to continue the printing process even if the capacity of the power supply circuit that supplies power to drive the electromagnet mechanism is insufficient. .
Ｃ問題点を解決するための手段）
かかるドソＩ・プリンタ装置において、駆動用電源の電
圧低下を検出する検出回路を設けることにより、制御回
路は該検出回路の検出信号を受け、電磁石機構のそれぞ
れの駆動を印字ヘッド単位に順序を定めて再駆動させる
ように制御するように構成する。Means for Solving Problem C) In such a doso I/printer device, by providing a detection circuit for detecting a voltage drop in the driving power source, the control circuit receives a detection signal from the detection circuit and controls the electromagnet mechanism. The configuration is such that the respective drives are controlled so as to determine the order of each print head and drive them again.
このように構成することによって前述の問題点は解決さ
れる。With this configuration, the above-mentioned problems are solved.
即ら、駆動用電源の電圧降下が検出回路によって検出さ
れることで、制御回路はドライバ制御回路には電磁石機
構のそれぞれの駆動が印字ヘット単位に所定の順序によ
って行われるように、また、キャリッジ制御回路にはキ
ャリッジの移送が印字ヘッド申１位に所定の順序によっ
て行われる電磁石機構の駆動に対して同期するよ・うに
、それぞれ指令することで制御が行われるようにしたも
のである。That is, by detecting the voltage drop of the driving power supply by the detection circuit, the control circuit controls the driver control circuit so that each of the electromagnetic mechanisms is driven in a predetermined order for each print head, and the carriage Control is performed by commanding the control circuit to synchronize the movement of the carriage with the driving of the electromagnetic mechanism which is carried out in a predetermined order for the print head and the first position.
従って、従来のような駆動用電源の電圧降下による電源
断により装置全体が停止されることを防ぐことができる
。Therefore, it is possible to prevent the entire device from being stopped due to a power cut due to a voltage drop in the driving power source as in the prior art.
以下本発明を第３図および第４図を参考に詳細に説明す
る。第３図は本発明による一実施例の回路構成図で、第
４図は本発明の一実施例の説明図である。The present invention will be explained in detail below with reference to FIGS. 3 and 4. FIG. 3 is a circuit diagram of an embodiment of the present invention, and FIG. 4 is an explanatory diagram of an embodiment of the present invention.
前述の第２図で説明した回路構成に検出回路Ｋを設けた
もので、他は全て同じである。A detection circuit K is added to the circuit configuration described above in FIG. 2, and everything else is the same.
検出回路には電源回路四を監視し、ドライバ回路Ｄ１〜
Ｄｆｉが多数同時に連続駆動した場合の電源回路四の例
えば電圧降下をチェックし、電圧が所定の電圧より降下
した時は異常信号を制御回路Ｃに出力する。The detection circuit monitors power supply circuit 4 and includes driver circuits D1 to D1.
For example, the voltage drop in the power supply circuit 4 is checked when a large number of Dfis are continuously driven at the same time, and an abnormality signal is output to the control circuit C when the voltage drops below a predetermined voltage.
そこで、制御回路ＣはラインバッファメモリＬＢからの
印字データの送出をストップさせ、ドライバ制御回路Ｄ
Ｃによってドライバ回路ＤＩ−Ｄ、、の駆動を停止させ
る。次に、電源回路ｐｗの電圧復帰によって検出回路に
は制御回路Ｃに指令し、再印字を行う。Therefore, the control circuit C stops sending out the print data from the line buffer memory LB, and the driver control circuit D
C stops the driving of the driver circuits DI-D, . Next, when the voltage of the power supply circuit pw is restored, the detection circuit instructs the control circuit C to perform reprinting.
この場合の再印字は制御回路Ｃよりラインバッファメモ
リＬＢには印字データの送出を指令し、ドライバ制御回
路ＤＣに分割が指令されることで行われ、ドライバ制御
回路ＤＣは分割が指令されることで印字ヘッド単位にド
ライバ回路Ｄ１〜Ｄ、、を分割し、次に制御回路Ｃから
指令される駆動指令によってドライバ制御回路ＤＣは印
字ヘッド単位に分割されたドライバ回路Ｄ１〜Ｄ７を順
次駆動させるように制御する。In this case, reprinting is performed by the control circuit C instructing the line buffer memory LB to send print data and instructing the driver control circuit DC to divide. The driver circuits D1 to D are divided into print head units, and then the driver control circuit DC sequentially drives the driver circuits D1 to D7 divided into print head units according to drive commands issued from the control circuit C. control.
また、このようなドライバ回路Ｄ＋””Ｄ−を分割する
ことは、例えば、特開昭５２−５６５４４号公報の「感
熱記録装置」に記載されたゲート回路と選択回路とをド
ライバ制御回路ＤＣを備えることで容易に実現すること
が可能である。Further, dividing the driver circuit D+""D- as described above means, for example, dividing the driver control circuit DC into the gate circuit and selection circuit described in "Thermal Recording Apparatus" of Japanese Unexamined Patent Publication No. 52-56544. This can be easily achieved by being prepared.
更に、制御回路Ｃはドライバ制御回路ＤＣの駆動指令に
同期してキャリッジ制御回路ＣＣに移送指令を行い、ド
ライバ回路り、〜Ｄ、、の順次駆動に対応してキャリッ
ジ制御回路ＣＣによるキャリッジＣ１ｌの移送が行われ
る。Further, the control circuit C issues a transfer command to the carriage control circuit CC in synchronization with the drive command of the driver control circuit DC, and the carriage control circuit CC moves the carriage C1l in response to the sequential driving of the driver circuits D, . Transfer takes place.
また、この再印字による印字は印字停止時点より引き続
いて印字する場合と、最初から印字する場合とがあり、
前者は二重印字が避けられ、後者は印字ズレが避けられ
る利点がある。In addition, this reprinting may continue printing from the point at which printing stopped, or it may print from the beginning.
The former has the advantage of avoiding double printing, and the latter has the advantage of avoiding misalignment of printing.
そこで、再印字の順序は第４図に示すように、印字ヘッ
ドＩＡ、 ＩＢ、 ＩＣ，１０が移送され、それぞれＡ
ＴＴ 、 Ｂ Ｔｌ 、 ＣＴｌ 、 Ｄ ｌ＋の印字
領域を印字中に電圧降下によってドライバ回路Ｄ１〜Ｄ
、、の駆動が停止された時、キャリッジＣＲを行の印字
領域の最終点まで移送し、キャリッジＣ１？を戻す際、
印字ヘッドＩＡによって■に示す方向でＡ′領領域印字
を行い、次に、印字ヘッドＩＢによって■に示す方向で
Ｂ′領領域印字を行い、更に、印字ヘッドＩＣにより■
に示す方向でＣ′領領域印字、印字ヘッドＩＤにより■
に示す方向でＤ′領領域印字が行われるようにしたもの
である。Therefore, the order of reprinting is as shown in Fig. 4. Print heads IA, IB, IC, and 10 are transferred to A and A, respectively.
While printing the printing areas of TT, B Tl, CTl, and D l+, the driver circuits D1 to D are affected by voltage drop.
, , is stopped, the carriage CR is transported to the final point of the printing area of the line, and the carriage C1? When returning the
The print head IA prints in the A' area in the direction shown by ■, then the print head IB prints in the B' area in the direction shown in ■, and then the print head IC prints in the B' area.
Print in area C' in the direction shown in , and print in the print head ID.
Printing is performed in the D' area in the direction shown in FIG.
尚、再印字の順序は印字停止時点より引き続いて印字を
行うことで説明を行ったが、それぞれの印字ヘッド１八
、 ＩＢ、 ＩＣ，１０による印字を■°、■１゜■“
、■“に示すように未印字領域Ａ”、Ｂ’。The order of reprinting was explained by continuing printing from the time when printing stopped, but the printing by each print head 18, IB, IC, and 10 is
, ■ "Unprinted areas A", B' as shown.
Ｃ’、Ｄ″と印字法領域Ａ”、Ｂ”、Ｃ″’、Ｄ”を通
して全て再印字するように行うことも可能である。It is also possible to reprint all of the printing method areas A'', B'', C'', and D''.
また、印字ヘッドＩＡ、ＩＢ、ＩＣ，１０の駆動も１個
づつ順次駆動させることで説明したが、印字へ・ノドＩ
ＡとＩＢ、印字ヘッドＩＣとＩＤをペアにして駆動させ
ることでも良い。In addition, although the driving of the print heads IA, IB, IC, and 10 was explained by sequentially driving them one by one,
It is also possible to drive A and IB and the print head IC and ID as a pair.
これにより電磁コイルＬ、〜Ｌ、、の駆動による電源回
路Ｐ智の平均電流は従来の１７２または１／４に低減す
ることができる。As a result, the average current of the power supply circuit P due to the driving of the electromagnetic coils L, .about.L, can be reduced to 172 or 1/4 of the conventional value.
したがって、漢字などを含む印字データを印字しても容
量の大きな電源回路四を設けることなく、従来のような
装置全体をストップさせることな（印字処理を行うこと
ができる。Therefore, even when printing data including kanji characters, etc., it is possible to perform the printing process without having to provide a large-capacity power supply circuit 4 and without stopping the entire device as in the past.
以上説明したように、本発明は電磁コイルし、〜−１０
＝
Ｌ、の駆動用電源を供給する電源回路四を監視する検出
回路Ｋを設けることにより、電磁コイルＬ。As explained above, the present invention uses an electromagnetic coil, and
= L, by providing a detection circuit K that monitors the power supply circuit 4 that supplies power for driving the electromagnetic coil L.
〜１．わが多数同時に駆動された場合の電圧降下の異常
を検出し、制御回路Ｃによって印字を停止させ、マルチ
ヘッド中の電磁コイルＬ、〜Ｌ、、を印字ヘッドＩＡ、
ＩＢ、ＩＣ，ＬＤの単位に分割し、それぞれを順次駆動
させる再印字を行うようにしたものである。~1. An abnormality in voltage drop when multiple heads are driven simultaneously is detected, and the control circuit C stops printing, and the electromagnetic coils L, ~L, in the multi-head are connected to the print head IA,
The printer is divided into IB, IC, and LD units, and reprinting is performed by sequentially driving each unit.
したがって、電源回路ｐ＋＋の容量を大きくすることな
く、漢字を含む印字データの処理ができ、しかも、従来
のように電源回路ＰＨの容量不足による装置全体をスト
ップすることは防ぐことができ、実用的効果は大である
。Therefore, it is possible to process print data including kanji characters without increasing the capacity of the power supply circuit p++, and it is possible to prevent the entire device from stopping due to lack of capacity in the power supply circuit PH, which is the case in the past, making it practical. The effect is great.
第１図はマルチヘッドの概略を示す平面図。
第２図は従来の回路構成図。
第３図および第４図は本発明による一実施例の説明図で
、第３図は回路構成図、第４図は説明図を示す。
図において、
Ｃは制御回路。
ＬＢはラインハソファメモリ。
ＤＣはドライバ制御回路。
ｎ、〜ＯＩ、はドライバ回路。
１．１〜Ｌ１１は電磁コイル。
四は電源回路１
ＣＣはキャリッジ制御回路。
ＣＲはキャリッジ。
Ｋは検出回路を示す。
＄ １ 目FIG. 1 is a plan view schematically showing a multi-head. FIG. 2 is a conventional circuit configuration diagram. 3 and 4 are explanatory diagrams of an embodiment according to the present invention, where FIG. 3 shows a circuit configuration diagram and FIG. 4 shows an explanatory diagram. In the figure, C is a control circuit. LB is line hasa sofa memory. DC is the driver control circuit. n, ~OI, is a driver circuit. 1.1 to L11 are electromagnetic coils. 4 is the power supply circuit 1 CC is the carriage control circuit. CR is carriage. K indicates a detection circuit. $1 item
Claims (1)
構とを有する印字ヘッドと、該印字ヘッドの複数個を所
定の間隔で配列し、印字媒体に対向させて移送を行うキ
ャリッジとより成るマルチヘッドを用い、電源回路より
該磁石機構に駆動用電源を供給し、制御回路からの制御
指令によりキャリッジ制御回路は該キャリッジの移送を
、ドライバ制御回路は該電磁石機構の駆動をそれぞれ制
御し、印字出力を行うドットプリンタ装置において、 前記駆動用電源の異常を検出する検出回路を設けること
により、前記制御回路は該検出回路の検出信号を受け、
前記電磁石機構のそれぞれの駆動を前記印字ヘッド単位
に順序を定めて再駆動させるように制御することを特徴
とするドットプリンタ装置。[Scope of Claims] A print head having a plurality of print wires and an electromagnetic mechanism for operating the print wires, and a carriage that arranges the plurality of print heads at a predetermined interval and transports them facing a print medium. A power supply circuit supplies driving power to the magnet mechanism, a carriage control circuit moves the carriage, and a driver control circuit drives the electromagnet mechanism according to control commands from the control circuit. In a dot printer device that performs control and print output, by providing a detection circuit that detects an abnormality in the drive power source, the control circuit receives a detection signal from the detection circuit,
A dot printer device, characterized in that each of the electromagnetic mechanisms is controlled to be re-driven in a determined order for each print head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23945487A JPS6392462A (en) | 1987-09-24 | 1987-09-24 | Dot printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23945487A JPS6392462A (en) | 1987-09-24 | 1987-09-24 | Dot printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6392462A true JPS6392462A (en) | 1988-04-22 |
| JPH034391B2 JPH034391B2 (en) | 1991-01-22 |
Family
ID=17045004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23945487A Granted JPS6392462A (en) | 1987-09-24 | 1987-09-24 | Dot printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6392462A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5256544A (en) * | 1975-11-04 | 1977-05-10 | Hitachi Ltd | Heat-sensitive recording device |
| JPS5525901U (en) * | 1978-06-30 | 1980-02-20 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE396019B (en) * | 1972-04-05 | 1977-09-05 | Rexnord Inc | KIT AND DEVICE FOR CHANGING THE SIZE OF THE CROSS SPACE IN A CONCRETE WHILE IT WORKS |
-
1987
- 1987-09-24 JP JP23945487A patent/JPS6392462A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5256544A (en) * | 1975-11-04 | 1977-05-10 | Hitachi Ltd | Heat-sensitive recording device |
| JPS5525901U (en) * | 1978-06-30 | 1980-02-20 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH034391B2 (en) | 1991-01-22 |
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