JP3649271B2 - Paper feed control method for serial recording apparatus and serial recording apparatus - Google Patents

Paper feed control method for serial recording apparatus and serial recording apparatus Download PDF

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JP3649271B2
JP3649271B2 JP31788198A JP31788198A JP3649271B2 JP 3649271 B2 JP3649271 B2 JP 3649271B2 JP 31788198 A JP31788198 A JP 31788198A JP 31788198 A JP31788198 A JP 31788198A JP 3649271 B2 JP3649271 B2 JP 3649271B2
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Prior art keywords
feed amount
paper
correction
paper feed
printing
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JP2000141795A (en
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和彦 山口
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Seiko Epson Corp
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Seiko Epson Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、単票用紙、及び連続用紙を印刷領域に選択的に給紙して印刷するシリアル記録装置、より詳細には単票用紙の送り制御技術に関する。
【0002】
【従来の技術】
連続用紙を印刷するシリアルプリンタは、ストッカの連続用紙を印刷領域に搬送するトラクタと、記録領域に配置され、記録用紙の送り量を制御する紙送りローラとを備え、紙送りローラによる紙送り量をトラクタによる紙送り量よりも若干大きく設定することにより、記録領域での記録用紙の紙だるみを防止することが行われている。
連続用紙にあっては一端側がトラクタにより拘束されているため、紙送りローラの過剰送りは印刷位置にほとんど影響を与えない。
しかし、このような記録装置により単票用紙を印刷すると、単票用紙の他端はフリー状態であるため、紙送りローラによる過剰な送り量で紙送りがなされて印刷位置に誤差が生じる。
このため、特開平3-262663号公報に見られるように、単票用紙と連帳用紙を共通の印字部に選択的に用紙送りして印字することができ、単票用紙を用紙送りをするときには、用紙が所定の用紙送り量に比べて僅かにずれた量用紙送りされる状態となるプリンタにおいて、単票用紙を用紙送りするときは、その時に実行すべき改行実行量とそれまでに積算された積算改行実行量とを加算し、その加算値が所定量以下のときには、上記改行実行量だけ用紙送りを行って、上記加算値を次の積算改行実行量とし、上記加算値が上記所定量より大きいときには、上記改行実行量から所定の補正量を補正した量だけ用紙送りを行って、上記加算値から上記所定量を差し引いた量を次の積算改行実行量とする記録装置が提案されている。
【0003】
【発明が解決しようとする課題】
これによれば、加算値が所定値よりも大きいときに改行実行量から所定の補正量を補正した量だけ用紙送り行うため、単票用紙の累積改行精度は向上するものの、補正量による修正が実行されるため、当該単票用紙の頭出し位置からの絶対的な紙送り量が判定できず、例えば特定の位置での位置修正が不可能であるという問題がある。
本発明はこのような問題に鑑みてなされたものであって、その目的とするところは、紙送りローラによる過剰送りを補正しつつ、単票用紙の現時点での印刷位置を正確に検出することができる記録用紙の紙送り方法を提案することである。
【0004】
また本発明の他の目的は、上記紙送り方法を実現することができるシリアルプリンタを提供することである。
【0005】
【課題を解決するための手段】
このような問題を解消するために本発明においては、1行の印刷が終了した段階で単票用紙の印刷当初からの実積算紙送り量と規定改行量との和と、修正スパンと修正回数との積とを比較し、前記実積算紙送り量と規定改行量との和が、前記修正スパンと修正回数との積よりも小さい場合には、前記規定改行量での紙送りを実行し、また前記実積算紙送り量と規定改行量との和が、前記修正スパンと修正回数との積よりも大きい場合には、修正改行量で紙送りを実行するとともに、前記修正回数をインクリメントするようにした。
【0006】
【作用】
修正回数を順次積算するため、修正改行量での紙送りに拘リなく、当該単票用紙の印刷領域を修正スパン、修正回数、及び改行量から算出することができる。
【0007】
【発明の実施の形態】
そこで以下に本発明の詳細を図示した実施例に基づいて説明する。
図1は、本発明の一実施例を示すものであって、プラテン1と記録ヘッド2が配置された印刷領域の上流側と下流側には、紙送りローラ3、4が配置され、タイミングベルト5を介して紙送りモータ6に接続されている。紙送りローラ4のさらに上流側には、連続用紙を印刷領域に搬送するトラクタ7が配置され、輪列8により紙送りローラ4に駆動される。
【0008】
トラクタ7と紙送りローラ4とは、紙送りローラ4の外径、または輪列8の歯数を調整することにより、紙送りローラ4の周速がトラクタ7の送り量よりも若干、たとえば1%程度多くなるように設定されている。
【0009】
紙送り制御手段10は、連続用紙を印刷する場合には規定の改行量Rとなるように紙送りを実行する一方、単票用紙を印刷する場合には、後述する修正位置検出手段12からの信号が入力した段階で、修正スパンL分の紙送りがなされた場合に生じる紙送り誤差ΔRを補正することができる修正改行量R’=RーΔRでの紙送りを実行する。
【0010】
修正回数カウンタ11は、単票用紙が装填された段階で初期データ「1」がセットされ、当該単票用紙の印刷工程において修正用改行量R’での紙送りが行われる度にインクリメントされる。
【0011】
修正位置検出手段12は、修正スパンLと修正回数カウンタ11の内容Nとの積(L×N)と、実積算紙送り量Tと規定改行量Rとの和(T+R)とを比較して、和(T+R)が前者の値(L×N)を超える場合に修正指令信号を紙送り制御手段10に出力する。
【0012】
つぎにこのように構成された装置の動作を図2に示したフローチャートに基づいて説明する。
(連続用紙の印刷)
連続用紙の印刷が選択された場合には、修正位置検出手段12は、不作動となり、紙送り制御手段10がトラクタ7を制御する。
【0013】
すなわち、印刷指令が入力すると、トラクタ7を作動させて印刷領域に連続用紙を搬送し、所定の頭出し操作を行う。そして、1行の印刷が終了する毎にトラクタ7により1改行分の紙送りを実行する。この過程の紙送り過程においては、トラクタ7よりも大きな周速で紙送りローラ3、4が回転するものの、連続用紙がその一端をトラクタ7に拘束されているため、紙送りローラ3、4が連続用紙に対してスリップするため、トラクタ7による規定改行量Rで紙送りされて印刷が進行する。
【0014】
(単票用紙の印刷)
一方、給紙源がスタッカ等の単票用紙に切換えられ、印刷信号が入力すると、修正回数カウンタ11の値Nに「1」がセットされる(ステップ イ)。スタッカから送り込まれた単票用紙は、上流側の紙送りローラ4に把持されて印刷領域に搬送され、規定の位置に送り込まれてから印刷が開始される(ステップ ロ)。
【0015】
記録ヘッド2により1行の印刷が終了すると(ステップ ハ)、修正位置検出手段12は、当該単票用紙の印刷当初からの実積算紙送り量Tと規定改行量Rの和、修正スパンLと修正回数カウンタ11の内容Nとの積とを比較する。今の場合には第1行目の印刷であるから、当該単票用紙の印刷当初からの実積算紙送り量Tと規定改行量Rの和が、修正スパンLと修正回数カウンタ11の内容Nとの積よりも小さいため(ステップ ニ)、信号を出力せず、したがって紙送り制御手段10は、規定改行量Rで紙送りを実行する(ステップ ホ)。
【0016】
このようにして印刷が進行して1行の印刷が終了する度に、後に改行を行う度に修正位置検出手段12は当該単票用紙の印刷当初からの実積算紙送り量Tと規定改行量Rの和と、修正スパンLと修正回数カウンタ11の内容Nとの積とを比較して、実積算紙送り量Tと規定改行量との和が、修正スパンLと修正回数カウンタの内容Nとの積を超えた場合には(ステップ ニ)、紙送り制御手段10に信号を出力する。
【0017】
これにより、紙送り制御手段10は、修正用改行量R’で紙送りを実行し、これまでの過剰紙送り量を補正する。また、修正回数カウンタ11がインクリメントされて内容Nが「1」から「2」となる。
【0018】
修正後、規定改行量Rでの紙送りを行いながら印刷が実行され、実積算紙送り量Tと規定改行量との和が、修正スパンLと修正回数カウンタ11の内容「2」との積を超えると(ステップ ニ)、紙送り制御手段10は修正改行量R’で紙送りを実行し、また修正回数カウンタ11がインクリメントされて内容Nが「2」から「3」となる(ステップ ヘ)。
【0019】
以下、このように修正改行量R’での紙送りがなされる度に修正回数カウンタ11がインクリメントしつつ、修正回数カウンタ11の内容「N」と修正スパンLとの積と、当該単票用紙の実積算紙送り量Tとを比較しながら規定改行量Rでの改行か、修正改行量R’での改行かを判定しながら印刷を継続する。
そして印刷データが無くなると、排紙が行われて次の記録用紙の装填を待つ(ステップ チ)。
【0020】
なお、上述の実施例においては、記録用紙が装填された段階で修正回数カウンタ11に初期値をセットしているが、単票用紙が排紙された段階でセットするようにしても同様の作用を奏することは明らかである。
【0021】
【発明の効果】
以上説明したように本発明においては、1行の印刷が終了した段階で単票用紙の印刷当初からの実積算紙送り量と規定改行量との和と、修正スパンと修正回数との積とを比較し、修正紙送りの必要性を判断するとともに、修正改行量で紙送りを実行した場合には、修正回数をインクリメントするようにしたので、修正改行量での紙送りに拘リなく、当該単票用紙の印刷領域を修正スパン、修正回数、及び改行量から現在の修正位置を正確に検出することができる。
【図面の簡単な説明】
【図1】本発明の一実施例を示す構成図である。
【図2】同上装置の動作を示すフローチャートである。
【符号の説明】
1 プラテン1
2 記録ヘッド
3、4 紙送りローラ
6 モータ
7 トラクタ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a single sheet paper and a serial recording apparatus that selectively feeds a continuous sheet to a printing area for printing, and more specifically to a sheet sheet feed control technique.
[0002]
[Prior art]
The serial printer that prints continuous paper includes a tractor that conveys the continuous paper of the stocker to the printing area, and a paper feed roller that is arranged in the recording area and controls the feed amount of the recording paper. Is set to be slightly larger than the paper feed amount by the tractor to prevent the paper from sagging in the recording area.
In continuous paper, one end side is constrained by a tractor, so excessive feeding of the paper feed roller hardly affects the printing position.
However, when a cut sheet is printed by such a recording apparatus, the other end of the cut sheet is in a free state, so that the paper is fed with an excessive amount of feed by the paper feed roller, resulting in an error in the printing position.
For this reason, as seen in Japanese Patent Application Laid-Open No. 3-262663, it is possible to selectively feed a sheet of paper and a continuous paper to a common printing unit for printing. When a sheet of paper is fed in a printer that is in a state where the paper is fed by an amount slightly deviated from the predetermined paper feed amount, the amount of line feeds to be executed at that time and the total number of line feeds accumulated so far When the added value is equal to or less than the predetermined amount, the sheet is fed by the line feed execution amount, and the added value is set as the next integrated line feed execution amount. When the addition value is larger than the predetermined amount, A recording apparatus has been proposed in which a sheet is fed by an amount obtained by correcting a predetermined correction amount from a line feed execution amount, and an amount obtained by subtracting the predetermined amount from the added value is used as the next integrated line feed execution amount .
[0003]
[Problems to be solved by the invention]
According to this, when the added value is larger than the predetermined value, the sheet is fed by an amount obtained by correcting the predetermined correction amount from the line feed execution amount, so that the cumulative line feed accuracy of the cut sheet paper is improved, but correction by the correction amount is executed. order to be an absolute paper feed amount from the beginning position of the cut sheet paper can not determine the constant, there is a problem that for example it is impossible to position correction at specific locations.
The present invention has been made in view of such problems, and an object of the present invention is to accurately detect the current printing position of a cut sheet while correcting overfeeding by a paper feed roller. This is to propose a paper feeding method for recording paper.
[0004]
Another object of the present invention is to provide a serial printer capable of realizing the paper feeding method.
[0005]
[Means for Solving the Problems]
In order to solve such a problem, in the present invention, at the stage when printing of one line is completed, the sum of the actual accumulated paper feed amount and the specified line feed amount from the beginning of the printing of the cut sheet, the correction span, and the correction frequency When the sum of the actual integrated paper feed amount and the specified line feed amount is smaller than the product of the correction span and the number of corrections, the paper feed is executed with the specified line feed amount. If the sum of the actual integrated paper feed amount and the specified line feed amount is larger than the product of the correction span and the number of corrections, the paper feed is executed with the correction line feed amount and the number of corrections is incremented. I did it.
[0006]
[Action]
Since the number of corrections is sequentially accumulated, the print area of the cut sheet can be calculated from the correction span, the number of corrections, and the line feed amount regardless of the paper feed with the corrected line feed amount.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Therefore, details of the present invention will be described below based on the illustrated embodiment.
FIG. 1 shows an embodiment of the present invention, in which paper feed rollers 3 and 4 are arranged on the upstream side and the downstream side of a printing area where a platen 1 and a recording head 2 are arranged, and a timing belt. 5 is connected to the paper feed motor 6 via On the further upstream side of the paper feed roller 4, a tractor 7 that conveys continuous paper to the printing area is disposed, and is driven by the paper feed roller 4 by a train wheel 8.
[0008]
The tractor 7 and the paper feed roller 4 adjust the outer diameter of the paper feed roller 4 or the number of teeth of the train wheel 8 so that the peripheral speed of the paper feed roller 4 is slightly higher than the feed amount of the tractor 7, for example, 1 It is set to increase by about%.
[0009]
The paper feed control means 10 executes the paper feed so that the specified line feed amount R is obtained when printing continuous paper, while the paper feed control means 10 from a correction position detecting means 12 described later when printing cut paper. When the signal is input, the paper feed is executed with the corrected line feed amount R ′ = R−ΔR that can correct the paper feed error ΔR that occurs when the paper feed for the correction span L is performed.
[0010]
The correction number counter 11 is set to initial data “1” when a cut sheet is loaded, and is incremented every time a sheet is fed with a correction line feed amount R ′ in the printing process of the cut sheet. .
[0011]
The correction position detection means 12 compares the product (L × N) of the correction span L and the content N of the correction counter 11 with the sum (T + R) of the actual integrated paper feed amount T and the specified line feed amount R. When the sum (T + R) exceeds the former value (L × N), a correction command signal is output to the paper feed control means 10.
[0012]
Next, the operation of the apparatus configured as described above will be described based on the flowchart shown in FIG.
(Continuous paper printing)
When continuous paper printing is selected, the correction position detection unit 12 is inoperative, and the paper feed control unit 10 controls the tractor 7.
[0013]
That is, when a print command is input, the tractor 7 is operated to convey a continuous sheet to the print area, and a predetermined cueing operation is performed. Then, every time printing of one line is completed, the tractor 7 feeds the paper for one line feed. In the paper feeding process of this process, although the paper feeding rollers 3 and 4 rotate at a peripheral speed larger than that of the tractor 7, since the continuous paper is constrained at one end by the tractor 7, the paper feeding rollers 3 and 4 Since the slip occurs with respect to the continuous sheet, the sheet is fed by the specified line feed amount R by the tractor 7 and the printing proceeds.
[0014]
(Cut sheet paper printing)
On the other hand, when the paper feed source is switched to a cut sheet such as a stacker and a print signal is input, “1” is set to the value N of the correction counter 11 (step i). The cut sheet fed from the stacker is gripped by the upstream paper feed roller 4 and conveyed to the printing area, and printing is started after being sent to a specified position (Step B).
[0015]
When printing of one line is completed by the recording head 2 (step C), the correction position detecting means 12 calculates the sum of the actual integrated paper feed amount T and the specified line feed amount R from the beginning of printing the cut sheet, the correction span L, The product of the correction number counter 11 and the content N is compared. In this case, since printing is performed on the first line, the sum of the actual accumulated paper feed amount T and the specified line feed amount R from the beginning of printing of the cut sheet is the correction span L and the content N of the correction number counter 11. Therefore, the paper feed control means 10 executes paper feed with the specified line feed amount R (step e).
[0016]
In this way, every time printing progresses and one line is finished, each time a line feed is made later, the correction position detecting means 12 makes the actual accumulated paper feed amount T and the specified line feed amount from the beginning of printing the cut sheet. The sum of R and the product of the correction span L and the content N of the correction counter 11 are compared, and the sum of the actual integrated paper feed amount T and the specified line feed amount is the correction span L and the content N of the correction counter. Is exceeded (step D), a signal is output to the paper feed control means 10.
[0017]
As a result, the paper feed control means 10 executes the paper feed with the correction line feed amount R ′ and corrects the excess paper feed amount so far. Further, the correction number counter 11 is incremented and the content N is changed from “1” to “2”.
[0018]
After the correction, printing is performed while feeding the paper with the specified line feed amount R, and the sum of the actual integrated paper feed amount T and the specified line feed amount is the product of the correction span L and the content “2” of the correction number counter 11. (Step D), the paper feed control means 10 executes paper feed with the corrected line feed amount R ′, and the correction counter 11 is incremented to change the content N from “2” to “3” (step F). ).
[0019]
Hereinafter, the correction number counter 11 is incremented each time the paper is fed with the corrected line feed amount R ′ as described above, and the product of the content “N” of the correction number counter 11 and the correction span L, and the sheet of the cut sheet. While comparing with the actual accumulated paper feed amount T, printing is continued while determining whether the line feed is at the specified line feed amount R or the line feed at the corrected line feed amount R ′.
When there is no print data, the paper is discharged and waiting for the next recording paper to be loaded (step H).
[0020]
In the above-described embodiment, the initial value is set in the correction number counter 11 when the recording sheet is loaded. However, the same effect can be obtained even when the cut sheet is discharged. It is clear that
[0021]
【The invention's effect】
As described above, in the present invention, at the stage when printing of one line is completed, the sum of the actual integrated paper feed amount and the specified line feed amount from the beginning of the printing of the cut sheet, and the product of the correction span and the correction number of times To determine the necessity of corrected paper feed, and when the paper feed is executed with the corrected line feed amount, the number of corrections is incremented, so regardless of the paper feed with the corrected line feed amount, The current correction position can be accurately detected from the correction area, the number of corrections, and the amount of line feed in the printing area of the cut sheet.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of the present invention.
FIG. 2 is a flowchart showing the operation of the apparatus.
[Explanation of symbols]
1 Platen 1
2 Recording head 3, 4 Paper feed roller 6 Motor 7 Tractor

Claims (4)

1行の印刷が終了した段階で単票用紙の印刷当初からの実積算紙送り量と規定改行量との和と、修正スパンと修正回数との積とを比較し、前記実積算紙送り量と規定改行量との和が、前記修正スパンと修正回数との積よりも小さい場合には、前記規定改行量での紙送りを実行し、また前記実積算紙送り量と規定改行量との和が、前記修正スパンと修正回数との積よりも大きい場合には、修正改行量で紙送りを実行するとともに、前記修正回数をインクリメントするシリアル記録装置の紙送り制御方法。At the stage when printing of one line is completed, the sum of the actual accumulated paper feed amount and the specified line feed amount from the beginning of printing of the cut sheet is compared with the product of the correction span and the correction number, and the actual accumulated paper feed amount is compared. And the specified line feed amount is smaller than the product of the correction span and the number of corrections, paper feed is executed with the specified line feed amount, and the actual integrated paper feed amount and the specified line feed amount A paper feed control method for a serial recording apparatus, in which, when the sum is larger than the product of the correction span and the number of corrections, the paper feed is executed with a corrected line feed amount and the correction number is incremented. 連続用紙を印刷領域に搬送するトラクタの紙送り量よりも紙送り量が若干多く、かつ前記トラクタに連動して駆動される紙送りローラと、連続用紙を印刷する場合には規定の改行量となるように紙送りを実行し、また単票用紙を印刷する場合には、規定改行量、または修正改行量のいずれかで紙送りを行う紙送り制御手段と、
前記修正改行量での紙送り回数を積算する修正回数カウンタと、
修正スパンと前記修正回数カウンタの内容との積と、実積算紙送り量と規定改行量との和とを比較して、実積算紙送り量と規定改行量との和が修正スパンと前記修正回数カウンタの内容との積よりも大きくなる場合に、前記紙送り制御手段に修正改行量での紙送りを指令する修正位置検出手段とを備えたシリアル記録装置。
The paper feed amount is slightly larger than the paper feed amount of the tractor that transports continuous paper to the printing area, and a paper feed roller driven in conjunction with the tractor, and a specified line feed amount when printing continuous paper. Paper feed control means for carrying out paper feed with either a specified line feed amount or a corrected line feed amount,
A correction number counter for accumulating the number of paper feeds at the corrected line feed amount;
The product of the correction span and the contents of the correction counter is compared with the sum of the actual integrated paper feed amount and the specified line feed amount. A serial recording apparatus comprising: correction position detection means for instructing the paper feed control means to feed paper with a corrected line feed amount when the product is larger than the product of the number counter.
単票用紙の印刷開始前に前記修正回数カウンタに初期値がセットされる請求項2に記載のシリアル記録装置。3. The serial recording apparatus according to claim 2, wherein an initial value is set in the correction number counter before starting the printing of the cut sheet. 排紙処理から次の単票用紙の印刷開始前までの間に前記修正回数カウンタに初期値がセットされる請求項2に記載のシリアル記録装置。The serial recording apparatus according to claim 2, wherein an initial value is set in the correction number counter between a paper discharge process and a start of printing of the next cut sheet.
JP31788198A 1998-11-09 1998-11-09 Paper feed control method for serial recording apparatus and serial recording apparatus Expired - Fee Related JP3649271B2 (en)

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