JP4802725B2 - Printing device - Google Patents

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JP4802725B2
JP4802725B2 JP2006012286A JP2006012286A JP4802725B2 JP 4802725 B2 JP4802725 B2 JP 4802725B2 JP 2006012286 A JP2006012286 A JP 2006012286A JP 2006012286 A JP2006012286 A JP 2006012286A JP 4802725 B2 JP4802725 B2 JP 4802725B2
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paper
printing
paper jam
hammer
paper feed
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JP2007190847A (en
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望 高橋
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リコープリンティングシステムズ株式会社
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Description

本発明は、印刷装置に関し、特に、ドットラインプリンタの印刷媒体である印字用紙を搬送する際に発生する用紙ジャムの誤検出および未検出を防止する制御装置に関するものである。   The present invention relates to a printing apparatus, and more particularly, to a control apparatus that prevents erroneous detection and non-detection of a paper jam that occurs when a printing paper that is a printing medium of a dot line printer is conveyed.

ドットラインプリンタを用いて連続紙を印刷する場合、印刷用紙の仕様によっては用紙走行路の板金等との摩擦により印刷用紙が用紙走行経路の板金等に張り付いてしまい、適切に印刷用紙が搬送されず、用紙ジャムが発生する場合がある。そこで用紙ジャムを検出するために印刷用紙走行路中にセンサを設置して用紙の搬送が適切に行われているかを監視している。センサには反射式センサを使用し、連続紙の両端に用紙搬送用に設けてある孔にセンサ光が通過するように設置してセンサ信号を生成し、印刷制御部でセンサ信号の変化を確認していた。また、センサに等間隔にスリットの空いたローラーを挟んでこのローラーを印刷用紙に密着させ、用紙搬送時に回転することでセンサ信号を生成するという方法もある。   When printing continuous paper using a dot line printer, depending on the printing paper specifications, the printing paper may stick to the sheet metal in the paper path due to friction with the sheet metal in the paper path, etc. In some cases, a paper jam may occur. Therefore, in order to detect a paper jam, a sensor is installed in the printing paper traveling path to monitor whether the paper is properly conveyed. A reflective sensor is used as the sensor, and it is installed so that the sensor light passes through the holes provided for paper conveyance at both ends of the continuous paper to generate a sensor signal, and the change of the sensor signal is confirmed by the print control unit Was. Further, there is a method in which a sensor signal is generated by sandwiching a roller having slits at equal intervals between the sensor and the roller so that the roller is in close contact with the printing paper and rotating when the paper is conveyed.

生成されたセンサ信号は高速で往復運動しているシャトル機構部によって発生する振動が原因でノイズが生じてしまい、正常な信号とならず、印刷制御部は用紙ジャムを誤検出してしまったり、未検出でエラーと判断できない場合があった。   The generated sensor signal generates noise due to vibration generated by the shuttle mechanism that reciprocates at high speed, and it does not become a normal signal, and the print control unit erroneously detects paper jam, There were cases where it was not detected and an error could not be determined.

特願平７−３０３７５２号公報Japanese Patent Application No. 7-303752

低コストが命題である低速ドットラインプリンタにおいて、いかなる部品においても安価な汎用品を用いることが重要である。これまで使用してきた用紙ジャムセンサは精度の高い反射式センサをドットラインプリンタ専用に加工したオリジナル部品を使用していた。   In a low-speed dot line printer where low cost is a proposition, it is important to use inexpensive general-purpose products for any part. The paper jam sensors that have been used so far have used original parts that have been processed exclusively for dot line printers by high-precision reflective sensors.

本発明が解決しようとする課題は、ドットラインプリンタにおいて安価な汎用品の透過式センサを使用することでコストダウンを実現し、用紙ジャムの検出を印刷モード毎に精度を高めることにある。   The problem to be solved by the present invention is to realize cost reduction by using an inexpensive general-purpose transmissive sensor in a dot line printer, and to improve the accuracy of paper jam detection for each printing mode.

本発明の請求項１に記載の発明は、複数個の印字素子を搭載したハンマバンクと、前記ハンマバンクを桁方向に往復移動させるシャトル機構部と、桁方向と垂直に印字用紙を間欠的に搬送するための紙送り機構部と、前記ハンマバンクの印字力を支持すると共に前記印字用紙のガイドとなるプラテンを備えたプラテン機構部と、用紙ジャムを検出する用紙ジャム検出センサとを有し、更にこれらを制御する印刷制御部を備えたドットラインプリンタにおいて、前記用紙ジャム検出センサが出力する信号のうちノイズに相当する信号のみを除去するフィルタ回路と、印刷モード毎に前記フィルタ回路の最適値を設定するフィルタ設定回路を具備したことを特徴とする。 According to a first aspect of the present invention, there is provided a hammer bank having a plurality of printing elements mounted thereon, a shuttle mechanism that reciprocates the hammer bank in the digit direction, and intermittently printing paper perpendicular to the digit direction. A paper feed mechanism for conveying, a platen mechanism that includes a platen that supports the printing force of the hammer bank and serves as a guide for the print paper, and a paper jam detection sensor that detects paper jam , Further, in a dot line printer provided with a print control unit for controlling these, a filter circuit for removing only a signal corresponding to noise among signals output from the paper jam detection sensor, and an optimum value of the filter circuit for each print mode And a filter setting circuit for setting .

本発明の請求項２記載の発明は、複数個の印字素子を搭載したハンマバンクと、前記ハンマバンクを桁方向に往復移動させるシャトル機構部と、桁方向と垂直に印字用紙を間欠的に搬送するための紙送り機構部と、前記ハンマバンクの印字力を支持すると共に前記印字用紙のガイドとなるプラテンを備えたプラテン機構部と、用紙ジャムを検出する用紙ジャム検出センサとを有し、更にこれらを制御する印刷制御部を備えたドットラインプリンタにおいて、前記用紙ジャム検出センサが出力する信号のうちノイズに相当する信号のみを除去するフィルタ回路と、任意の紙送り量、紙送り開始からの所定時間、あるいは紙送り終了後からの所定時間に応じて前記フィルタ回路の最適値を設定するフィルタ設定回路を具備したことを特徴とする。 According to a second aspect of the present invention, a hammer bank having a plurality of printing elements mounted thereon, a shuttle mechanism for reciprocating the hammer bank in the digit direction, and intermittently transporting printing paper perpendicular to the digit direction A paper feeding mechanism, a platen mechanism that includes a platen that supports the printing force of the hammer bank and serves as a guide for the printing paper, and a paper jam detection sensor that detects paper jam. In a dot line printer having a print control unit for controlling these, a filter circuit for removing only a signal corresponding to noise from signals output from the paper jam detection sensor, an arbitrary paper feed amount, and a paper feed start A filter setting circuit is provided for setting an optimum value of the filter circuit in accordance with a predetermined time or a predetermined time after the end of paper feeding .

本発明の印刷装置によれば、シャトル機構部の高速往復動作によってノイズが生じた用紙ジャムセンサ信号を印刷モード毎に最適なフィルタリング設定値に設定することよって、振動等によって生じるノイズを削除することができ、用紙ジャムの誤検出および未検出が防止できる。   According to the printing apparatus of the present invention, by setting the paper jam sensor signal in which noise is generated by the high-speed reciprocating operation of the shuttle mechanism unit to the optimum filtering setting value for each printing mode, noise generated by vibration or the like is deleted. This can prevent erroneous detection and non-detection of paper jam.

本発明は、印刷制御用部に用紙ジャムセンサ信号用フィルタ回路、及びフィルタ設定回路の追加と、この回路を制御するソフトウェアの追加で実現した。   The present invention is realized by adding a paper jam sensor signal filter circuit and a filter setting circuit to the print control unit and software for controlling the circuit.

以下図面を参照して本発明を説明する。   The present invention will be described below with reference to the drawings.

図１は、本発明の一実施例の印刷装置の概略図である。図２は、本発明の一実施例の印刷装置のブロック図である。図３は、本発明の一例となる印刷装置のタイミングチャートである。   FIG. 1 is a schematic diagram of a printing apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram of a printing apparatus according to an embodiment of the present invention. FIG. 3 is a timing chart of the printing apparatus as an example of the present invention.

図１において、１はハンマバンク、２はインクリボン、３は印刷用紙、４はプラテン、５はシャトル機構部、６は用紙ジャムセンサ、７は紙送り機構部、８は印刷制御部、９は印刷モード設定手段である。   In FIG. 1, 1 is a hammer bank, 2 is an ink ribbon, 3 is printing paper, 4 is a platen, 5 is a shuttle mechanism, 6 is a paper jam sensor, 7 is a paper feed mechanism, 8 is a printing controller, and 9 is Print mode setting means.

印刷制御部８は印刷用紙３にハンマピンが複数個並んで配置されているハンマバンク１を印刷データから打ち出すハンマピンを指定し、ハンマバンク１を搭載しているシャトル機構部５を桁方向に往復運動させ、ハンマバンク１の打撃力を支持するプラテン４をインクリボン２と印刷用紙３との厚さに適したギャップに固定し、印刷動作を行う。ハンマバンク１の印刷終了後、紙送り機構部７によって水平方向に次の印刷位置まで紙送りを行い、印刷用紙３に密着するように設定されている用紙ジャムセンサ６のローラーが紙送り動作と同期して回転し、ローラーに刻まれたスリットをセンサが読み取り信号化して印刷制御部８へ入力する。印刷制御部８は前記センサ信号が変化しない場合に用紙ジャムを検出する。印刷用紙が次の印刷位置まで搬送されると印刷データの印刷を行う。以下同様に印刷動作、紙送り動作を繰り返し連続紙の印刷を行う。   The print control unit 8 designates a hammer pin for punching out the hammer bank 1 in which a plurality of hammer pins are arranged on the printing paper 3 from the print data, and reciprocates the shuttle mechanism unit 5 on which the hammer bank 1 is mounted in the digit direction. Then, the platen 4 that supports the hammering force of the hammer bank 1 is fixed to a gap suitable for the thickness of the ink ribbon 2 and the printing paper 3 to perform a printing operation. After the printing of the hammer bank 1 is finished, the paper feed mechanism unit 7 feeds the paper in the horizontal direction to the next printing position, and the roller of the paper jam sensor 6 set to be in close contact with the printing paper 3 performs the paper feeding operation. The sensor rotates in synchronism, and the sensor reads the slit carved in the roller and inputs it to the print control unit 8. The print controller 8 detects a paper jam when the sensor signal does not change. When the printing paper is conveyed to the next printing position, the printing data is printed. Thereafter, the printing operation and the paper feeding operation are repeated in the same manner to perform continuous paper printing.

図２において、６は用紙ジャムセンサ、８は印刷制御部、９は印刷モード設定手段、１０はＣＰＵ、１１は不揮発性素子、１２はフィルタ回路、１３はフィルタ設定回路である。   In FIG. 2, 6 is a paper jam sensor, 8 is a print control unit, 9 is a print mode setting means, 10 is a CPU, 11 is a non-volatile element, 12 is a filter circuit, and 13 is a filter setting circuit.

印刷制御部８は用紙ジャムセンサ６より入力される用紙ジャムセンサ信号を印刷制御部８内のＣＰＵ１０で異常を監視している。フィルタ回路１２は用紙ジャムセンサ信号のノイズを除去するための回路であり、任意の時間、および紙送り機構部７で駆動させているステッピングモータの任意のステップ数で設定が可変できるようになっている。印刷モード設定手段９より設定された印刷モードが印刷制御部８に入力されるとＣＰＵ１０は印刷モード毎に不揮発性素子１１に記憶されていた設定値をフィルタ設定回路１３によってフィルタ回路１２の設定を行う。   The print control unit 8 monitors the abnormality of the paper jam sensor signal input from the paper jam sensor 6 by the CPU 10 in the print control unit 8. The filter circuit 12 is a circuit for removing noise from the paper jam sensor signal, and the setting can be varied at an arbitrary time and an arbitrary number of steps of the stepping motor driven by the paper feed mechanism unit 7. Yes. When the print mode set by the print mode setting means 9 is input to the print control unit 8, the CPU 10 sets the setting value stored in the nonvolatile element 11 for each print mode by the filter setting circuit 13 in the filter circuit 12. Do.

図３において、印刷信号はＨレベルで印刷中、Ｌレベルで印刷待機中を示す。紙送り信号はＨレベルで紙送り中、Ｌレベルで紙送り停止中を示す。用紙ジャムセンサ信号は印刷用紙３に密着させてある用紙ジャムセンサ６のローラが回転することでスリットがセンサを通過するため、図のような連続したパルスが印刷制御部８に入力される。
印刷用紙３を任意の数だけ紙送りを行う場合、紙送り動作中に印刷しないように紙送り印刷待機時間ｔＰＲＯＦＦと紙送り時間ｔＰＦはｔＰＲＯＦＦ＞ｔＰＦとなるように印刷制御部８で制御されている。用紙ジャムセンサ信号は紙送り動作中でなければ信号レベルの変化は起こらないのであるが、シャトル機構部５の高速動作によって生ずる振動によって用紙ジャムセンサ６のローラーが動いてしまい、図のようなノイズがでてしまう場合がある。このノイズは印刷モード毎にシャトル機構部５の動作速度が異なるため、ノイズ幅も印刷モードによって異なる。この信号を除去するため、用紙ジャムセンサ信号を各印刷モード毎にフィルタ設定回路１３によって最適値を設定したフィルタ回路１２を通過させる。フィルタ回路１２通過後の用紙ジャムセンサ信号はノイズのない用紙ジャムセンサ信号となるので精度のよい用紙ジャム検出を行うことができる。 In FIG. 3, the print signal indicates printing at H level and waiting for printing at L level. The paper feed signal indicates that the paper feed is at the H level and the paper feed is stopped at the L level. As the paper jam sensor signal is rotated by the roller of the paper jam sensor 6 that is in close contact with the printing paper 3, the slit passes through the sensor, so that continuous pulses as shown in FIG.
When an arbitrary number of paper sheets 3 are fed, the print control unit 8 is set so that the paper feed printing standby time t PROFF and the paper feed time t PF are t PROFF > t PF so as not to print during the paper feeding operation. It is controlled by. The signal level of the paper jam sensor signal does not change unless the paper feeding operation is in progress. However, the roller of the paper jam sensor 6 moves due to the vibration generated by the high speed operation of the shuttle mechanism unit 5, and noise as shown in the figure. May occur. Since this noise has different operating speeds of the shuttle mechanism unit 5 for each printing mode, the noise width also differs depending on the printing mode. In order to remove this signal, the paper jam sensor signal is passed through the filter circuit 12 in which the optimum value is set by the filter setting circuit 13 for each printing mode. Since the paper jam sensor signal after passing through the filter circuit 12 becomes a paper jam sensor signal with no noise, accurate paper jam detection can be performed.

更に、紙送り量によって紙送りの最高速度が異なる場合があり、この場合、用紙ジャムセンサ信号の幅も異なることから、紙送り量に応じてフィルタ設定値を変更することにより、振動により生じるノイズをより正確に除去することが可能となる。また、紙送り開始からの時間あるいは紙送り終了からの時間に応じてフィルタ設定値を変更することにより、紙送り中以外の用紙ジャムセンサ信号、すなわち振動により生じるノイズを的確に除去することができる。   In addition, the maximum paper feed speed may vary depending on the paper feed amount. In this case, the width of the paper jam sensor signal also differs. Therefore, by changing the filter setting value according to the paper feed amount, noise caused by vibrations Can be more accurately removed. Further, by changing the filter setting value according to the time from the start of paper feed or the time from the end of paper feed, it is possible to accurately remove paper jam sensor signals other than during paper feed, that is, noise caused by vibration. .

本発明の一例となる印刷装置の概略図である。1 is a schematic diagram of a printing apparatus as an example of the present invention. 本発明の一例となる印刷装置のブロック図である。1 is a block diagram of a printing apparatus as an example of the present invention. 本発明の一例となる印刷装置のタイミングチャートである。3 is a timing chart of a printing apparatus as an example of the present invention.

符号の説明Explanation of symbols

１はハンマバンク、２はインクリボン、３は印刷用紙、４はプラテン、５はシャトル機構部、６は用紙ジャムセンサ、７は紙送り機構部、８は印刷制御部、９は印刷モード設定手段、１０はＣＰＵ、１１は不揮発性素子、１２はフィルタ回路、１３はフィルタ設定回路である。
1 is a hammer bank, 2 is an ink ribbon, 3 is printing paper, 4 is a platen, 5 is a shuttle mechanism, 6 is a paper jam sensor, 7 is a paper feed mechanism, 8 is a printing controller, and 9 is a printing mode setting means. Reference numeral 10 is a CPU, 11 is a non-volatile element, 12 is a filter circuit, and 13 is a filter setting circuit.

Claims (2)

複数個の印字素子を搭載したハンマバンクと、前記ハンマバンクを桁方向に往復移動させるシャトル機構部と、桁方向と垂直に印字用紙を間欠的に搬送するための紙送り機構部と、前記ハンマバンクの印字力を支持すると共に前記印字用紙のガイドとなるプラテンを備えたプラテン機構部と、用紙ジャムを検出する用紙ジャム検出センサとを有し、更にこれらを制御する印刷制御部を備えたドットラインプリンタにおいて、前記用紙ジャム検出センサが出力する信号のうちノイズに相当する信号のみを除去するフィルタ回路と、印刷モード毎に前記フィルタ回路の最適値を設定するフィルタ設定回路を具備したことを特徴とする印刷装置。 A hammer bank equipped with a plurality of printing elements, a shuttle mechanism for reciprocating the hammer bank in the digit direction, a paper feed mechanism for intermittently conveying printing paper perpendicular to the digit direction, and the hammer a platen motor構部having a platen down as a guide for the printing paper to support the printing force of the bank, and a paper jam detection sensor for detecting a paper jam, further comprising a printing control unit for controlling the The dot line printer includes a filter circuit that removes only a signal corresponding to noise among signals output from the paper jam detection sensor, and a filter setting circuit that sets an optimum value of the filter circuit for each print mode. A printing apparatus characterized by the above. 複数個の印字素子を搭載したハンマバンクと、前記ハンマバンクを桁方向に往復移動させるシャトル機構部と、桁方向と垂直に印字用紙を間欠的に搬送するための紙送り機構部と、前記ハンマバンクの印字力を支持すると共に前記印字用紙のガイドとなるプラテンを備えたプラテン機構部と、用紙ジャムを検出する用紙ジャム検出センサとを有し、更にこれらを制御する印刷制御部を備えたドットラインプリンタにおいて、前記用紙ジャム検出センサが出力する信号のうちノイズに相当する信号のみを除去するフィルタ回路と、任意の紙送り量、紙送り開始からの所定時間、あるいは紙送り終了後からの所定時間に応じて前記フィルタ回路の最適値を設定するフィルタ設定回路を具備したことを特徴とする印刷装置。 A hammer bank equipped with a plurality of printing elements, a shuttle mechanism for reciprocating the hammer bank in the digit direction, a paper feed mechanism for intermittently conveying printing paper perpendicular to the digit direction, and the hammer A dot having a platen mechanism that includes a platen that supports the printing force of the bank and serves as a guide for the printing paper, and a paper jam detection sensor that detects paper jam, and further includes a print control unit that controls these. In a line printer, a filter circuit that removes only a signal corresponding to noise from signals output from the paper jam detection sensor, an arbitrary paper feed amount, a predetermined time from the start of paper feed, or a predetermined time after the end of paper feed A printing apparatus comprising a filter setting circuit for setting an optimum value of the filter circuit according to time .
JP2006012286A 2006-01-20 2006-01-20 Printing device Expired - Fee Related JP4802725B2 (en)

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Publication number Priority date Publication date Assignee Title
JPH0613228B2 (en) * 1984-04-17 1994-02-23 富士通株式会社 Printer
JPH02162069A (en) * 1988-12-15 1990-06-21 Fujitsu Ltd Paper jam detector
JPH03130184A (en) * 1989-10-17 1991-06-03 Nec Eng Ltd Jam detection system of serial printer
JP3851076B2 (en) * 2000-11-08 2006-11-29 富士ゼロックス株式会社 Printing device
JP2003212387A (en) * 2002-01-18 2003-07-30 Seiko Epson Corp Picture image formation device

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