JPH0696301B2 - Printer control circuit - Google Patents

Printer control circuit

Info

Publication number
JPH0696301B2
JPH0696301B2 JP61247409A JP24740986A JPH0696301B2 JP H0696301 B2 JPH0696301 B2 JP H0696301B2 JP 61247409 A JP61247409 A JP 61247409A JP 24740986 A JP24740986 A JP 24740986A JP H0696301 B2 JPH0696301 B2 JP H0696301B2
Authority
JP
Japan
Prior art keywords
paper
recording paper
control circuit
recording
motor
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 - Lifetime
Application number
JP61247409A
Other languages
Japanese (ja)
Other versions
JPS63102960A (en
Inventor
孝一 戸祭
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 JP61247409A priority Critical patent/JPH0696301B2/en
Publication of JPS63102960A publication Critical patent/JPS63102960A/en
Publication of JPH0696301B2 publication Critical patent/JPH0696301B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/36—Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
    • B41J11/42—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering
    • B41J11/46—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering by marks or formations on the paper being fed

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はプリンタの給紙ミスの少ないプリンタを提供す
るためのプリンタ制御回路である。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is a printer control circuit for providing a printer with few paper feed errors in the printer.

〔従来の技術〕[Conventional technology]

従来のプリンタは、実案公報昭55−49258号，実案公報
昭57−20360号等に記載のように、記録紙を光学的ある
いは機械的に検知する手段を給紙通路上に設け、記録紙
の有無を検出し、記録紙が有る場合には記録を行なうよ
うになっていた。A conventional printer is provided with a means for optically or mechanically detecting a recording paper on a paper feeding path, as described in Japanese Utility Model Publication No. 55-49258 and Japanese Utility Model Publication No. 57-20360. The presence or absence of paper is detected, and if there is recording paper, recording is performed.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

上記従来技術は、専用記録紙の判別ということに配慮さ
れておらず、記録紙が使用するインクと相性の悪い材質
で出来ている場合には、記録画の品質の悪化や紙づまり
が起こるという問題があった。特にポリエステルコート
や発色剤の塗布などの特殊な表面処理を施した記録紙で
記録する場合には、表裏が逆になっても正常な記録がで
きないという問題があった。The above-mentioned prior art does not take into consideration the determination of the dedicated recording paper, and if the recording paper is made of a material that is incompatible with the ink used, the quality of the printed image will deteriorate and paper jams will occur. was there. In particular, when recording on a recording paper that has been subjected to a special surface treatment such as coating with a polyester coat or a coloring agent, there is a problem that normal recording cannot be performed even if the front and back are reversed.

本発明の目的は専用の記録紙を判定することにより正常
な記録を行い、しかも操作性の良いプリンタを実現する
ことにある。An object of the present invention is to realize a printer that performs normal recording by determining a dedicated recording paper and has good operability.

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

上記目的は、記録上のマーカーを検出し専用紙の判定を
行うと共に、記録紙が給紙ローラですべることによる誤
判定により正常紙が給紙されないのを複数回の給紙動作
を行うことによって達成される。The purpose of the above is to detect the marker on the recording and judge the special paper, and to perform the paper feeding operation several times to prevent the normal paper from being fed due to the erroneous judgment caused by the paper feeding roller sliding the recording paper. To be achieved.

〔作用〕[Action]

センサーは記録紙上のマーカーを検出し、制御回路へ送
る。制御回路は同時に送られて来る送り量検出器と出力
とセンサー出力とによりマーカー位置とマーカーの形状
により正常紙か否かを判定し、正常紙の場合には給紙を
続けプリント動作に入り、異常紙と判定した場合は給続
動作を停止し、紙を逆方向に搬送し再び給紙動作を開始
する。ただしこの時正常紙でもすべりが大により異常紙
と判定される事があり得る。このように、異常紙と判定
した場合には自動的に複数回の給紙動作を行い、その間
にすべりが所定の量以下になり、正常紙と判定したとき
は給紙動作からプリントに進み、複数回の給紙動作を行
っても異常紙と判定した場合には記録紙を逆方向に搬送
し給紙動作を停止する。The sensor detects the marker on the recording paper and sends it to the control circuit. The control circuit determines whether or not the paper is normal by the marker amount and the shape of the marker by the feed amount detector, output and sensor output that are sent at the same time. When it is determined that the paper is abnormal, the feeding operation is stopped, the paper is conveyed in the opposite direction, and the paper feeding operation is started again. However, at this time, even normal paper may be judged to be abnormal due to large slippage. In this way, when it is determined that the paper is abnormal, the paper feed operation is automatically performed a plurality of times, and during that time, the slip is less than or equal to a predetermined amount, and when it is determined that the paper is normal, the paper feed operation proceeds to printing, If it is determined that the paper is abnormal even after the paper feeding operation is performed a plurality of times, the recording paper is conveyed in the reverse direction and the paper feeding operation is stopped.

これによって正常紙のみを正しく給紙することができ
る。This makes it possible to correctly feed only normal paper.

〔実施例〕〔Example〕

以下、本発明の実施例を説明する。 Examples of the present invention will be described below.

第１図は本発明の一実施例を示す図である。ロータリー
エンコーダのような回転量検出器１を取り付けた駆動モ
ータ２には駆動ギア３を介し、給紙ギア４−1,4−２を
接続し、給紙ギア４−1,4−２にはそれぞれ表面がゴム
など摩擦係数の大きな材量でできた給紙ローラ５−1,5
−２が同軸的に設けてある。記録紙６は給紙ローラ５−
1,5−２の間を搬送される。記録紙６の裏面にはマーカ
ー８−1,8−２が印刷されている。記録紙６が搬送さ
れ、マーカー８−1,8−２が通過する径路の上にフォト
カプラのようなマーク検出器７−1,7−２が設けられて
いる。FIG. 1 is a diagram showing an embodiment of the present invention. A drive motor 2 to which a rotation amount detector 1 such as a rotary encoder is attached is connected to paper feed gears 4-1 and 4-2 via a drive gear 3, and the paper feed gears 4-1 and 4-2 are connected to the drive motor 2. Paper feed rollers 5-1 and 5 each made of a material with a large coefficient of friction such as rubber
-2 is provided coaxially. The recording paper 6 is a paper feed roller 5-
It is transported between 1,5-2. Markers 8-1 and 8-2 are printed on the back surface of the recording paper 6. Mark detectors 7-1 and 7-2 such as photo couplers are provided on the path through which the recording paper 6 is conveyed and the markers 8-1 and 8-2 pass.

駆動モータ２の回転により給紙ローラ５−1,5−２間の
記録紙６が搬送されるから、回転量検出器１は、記録紙
６の送り量検出器として作動する。Since the recording paper 6 is conveyed between the paper feed rollers 5-1 and 5-2 by the rotation of the drive motor 2, the rotation amount detector 1 operates as a feed amount detector of the recording paper 6.

マーク検出器７−1,7−２の出力と回転量検出器１の出
力は制御回路９へ送られる。コピースイッチ10を押すと
制御回路９は駆動モータ２をONし給紙動作を開始する。
マーク検出器７−1,7−２は記録紙６が通過するとき
に、記録紙の有無とマーク８−1,8−２を検知する。制
御回路９はマーク検出器７−1,7−２の出力と回転量検
出器１の出力により、マーク８−1,8−２の紙端からの
位置、あるいは大きさを判断し記録紙６が正常であるか
否かを判定する。正常と判定した場合には紙の搬送を続
け、プリント動作に入る。The outputs of the mark detectors 7-1 and 7-2 and the output of the rotation amount detector 1 are sent to the control circuit 9. When the copy switch 10 is pressed, the control circuit 9 turns on the drive motor 2 to start the paper feeding operation.
When the recording paper 6 passes, the mark detectors 7-1 and 7-2 detect the presence or absence of the recording paper and the marks 8-1 and 8-2. The control circuit 9 judges the position or size of the marks 8-1 and 8-2 from the edge of the paper based on the outputs of the mark detectors 7-1 and 7-2 and the rotation amount detector 1 to determine the recording paper 6 Is determined to be normal. If it is determined to be normal, the conveyance of the paper is continued and the printing operation is started.

正常紙のみを給紙するために判定で、正常紙がすべり等
により異常紙と判定されることが生じるが、このとき記
録紙６を逆方向に搬送し給紙を止めたとすると、使用者
が再びコピースイッチ10を押して給紙動作を開始させな
くてはならない。ところが異常紙が入って来た場合、あ
るいは表裏逆に給紙した場合、マーク検出器７−1,7−
２からマーク検出出力は出ないから、何度判定を繰り返
しても異常紙を正常紙と判定することはあり得ない。そ
こで、正常紙が異常紙と判定した場合には、記録紙６を
逆方向に搬送した後、制御回路９は自動的に給紙動作を
開始させる。このように異常紙と判定した場合は逆方向
へ搬送し、再び給紙を行う動作を自動的に何回か繰り返
す事により、すべりが所定の量以下の場合正常紙と判断
でき、所定回数後も異常紙と判定したら記録紙６を逆方
向に搬送し給紙を停止する。このときに始めて使用者に
は制御回路９から異常紙表示のLED11を点滅させるなど
して知らせる所定の回数以前に正常紙と判定できたとき
には搬送を紙けプリント動作に入る。In the determination for feeding only normal paper, the normal paper may be determined to be abnormal due to slippage or the like. At this time, if the recording paper 6 is conveyed in the reverse direction and the paper feed is stopped, the user may The copy switch 10 must be pressed again to start the paper feeding operation. However, if abnormal paper comes in or if paper is fed upside down, mark detectors 7-1, 7-
Since the mark detection output is not output from No. 2, the abnormal paper cannot be judged to be normal paper even if the judgment is repeated many times. Therefore, when it is determined that the normal paper is the abnormal paper, the control circuit 9 automatically starts the paper feeding operation after the recording paper 6 is conveyed in the reverse direction. When it is determined that the paper is abnormal in this way, the paper is conveyed in the reverse direction, and the operation of feeding paper again is automatically repeated several times. If it is determined that the paper is abnormal, the recording paper 6 is conveyed in the reverse direction and the paper feeding is stopped. At this time, when the user can determine that the paper is normal before the predetermined number of times, the control circuit 9 informs the user by blinking the LED 11 for indicating the abnormal paper, and the paper feed operation is started.

第２図に、動作のフローチャートを示す。もちろん異常
表示はしなくても良い。またマーカーの幅を検出するも
の、複数のマーカーを検出するもの、あるいはこれらの
組み合わせによるものなどが考えられるが異常と判定し
たときに複数回給紙を繰り返すということに関して全く
同一である。FIG. 2 shows a flowchart of the operation. Of course, it is not necessary to display the abnormality. Further, it may be possible to detect the width of the marker, detect a plurality of markers, or a combination thereof, but it is exactly the same with respect to repeating the paper feeding a plurality of times when it is determined to be abnormal.

第３図は制御回路９である。制御回路９はマイクロコン
ピュータ12とコンパレータ14,15モータ反転回路13から
成っている。モータ反転回路13にはマイクロコンピュー
タからモータON/OFF信号16と正転／逆転切換信号17が与
えられる。FIG. 3 shows the control circuit 9. The control circuit 9 comprises a microcomputer 12 and comparators 14 and 15 motor reversing circuit 13. A motor ON / OFF signal 16 and a normal / reverse rotation switching signal 17 are applied to the motor reversing circuit 13 from a microcomputer.

第４図はモータ反転回路13の１例である。モータON/OFF
端子19にON信号′１′が与えられ、正転／逆転切換端子
18に正転信号′１′が与えられるとTr1とTr4がONし、Tr
2とTr3がOFFする。逆転信号′１′が与えられるとTr2と
Tr3がONし、Tr1とTr4がOFFする。これらによりモータ２
を正転／逆転させ、記録紙６を搬送・逆搬送できる。FIG. 4 shows an example of the motor reversing circuit 13. Motor ON / OFF
ON signal '1' is given to terminal 19 and forward / reverse switching terminal
When the forward rotation signal '1' is given to 18, Tr 1 and Tr 4 turn on and Tr
2 and Tr 3 turn off. When the reverse signal “1” is given, Tr 2 and
Tr 3 turns on and Tr 1 and Tr 4 turn off. Motor 2
The recording paper 6 can be conveyed in the forward / reverse direction and can be conveyed in the reverse direction.

第５図に給紙動作のタイミングを示す。ａはコピースイ
ッチ10を押すことによってマイクロコンピュータ12に与
えられるスタートパルスである。スタートパルスが与え
られるとマイクロコンピュータ12は、モータON/OFF信号
16を出す。ｂはモータON/OFF信号のタイミングであり、
HiがON,LoがOFFを示す。スタート時にマイクロコンピュ
ータ12はモータON/OFF信号16と共に、正転／逆転信号17
も出力する。ｃのHiが正転,Loが逆転を示す。スタート
時はHiの正転指令を出し記録紙６を給紙する。ｄはFG出
力を示す。ｅはセンサ７の出力である。センサ７は第３
図のようにLEDとフォトトランジスタの組み合わせによ
り記録紙の反射により、記録紙の有無と記録紙上のマー
ク８を検出する。第５図ｅでHiは記録紙の白部分であ
り、Loは記録紙が無い状態か記録紙上のマーク部分の反
射のときのセンサ７の出力を示している。FIG. 5 shows the timing of the paper feeding operation. Reference numeral a is a start pulse given to the microcomputer 12 by pressing the copy switch 10. When the start pulse is given, the microcomputer 12 turns the motor ON / OFF signal
Take out 16. b is the timing of the motor ON / OFF signal,
Hi indicates ON and Lo indicates OFF. At the start, the microcomputer 12 turns the motor ON / OFF signal 16 as well as the forward / reverse rotation signal 17
Will also be output. Hi in c indicates forward rotation, and Lo indicates reverse rotation. At the start, the forward rotation command of Hi is issued and the recording paper 6 is fed. d indicates FG output. e is the output of the sensor 7. The sensor 7 is the third
As shown in the figure, the presence of the recording paper and the mark 8 on the recording paper are detected by the reflection of the recording paper by the combination of the LED and the phototransistor. In FIG. 5e, Hi indicates the white portion of the recording paper, and Lo indicates the output of the sensor 7 when there is no recording paper or when the mark portion on the recording paper is reflected.

コピースイッチ10が押されたとき正常動作ではセンサ７
の下に記録紙６は無いからセンサ出力はLoである。記録
紙６が搬送され先端部がセンサ７の下に来るとセンサ出
力はHiになり、マークが通過する期間はLoになる。記録
紙先端からマークまでの長さを、マイクロコンピュータ
12はモータ２のFG1の出力をカウントすることによって
測る。同様にマークの長さも測る。記録紙先端からマー
クまでのFGパルス数が正常時ｍでマーク部がｎとする。
今、マーク部にゴミ等が付着しFGパルス数がｎ′になっ
たとする。記録先端からマークまでとマーク部分のFGパ
ルス数がm,nでないときマイクロコンピュータ12は記録
紙６が異常紙と判断し、モータ２を逆転させるために、
正転／逆転信号17をLoにする。モータ２を逆転し、再び
記録紙６の先端が来るまで逆方向に搬送する。これが１
回目の給紙動作である。この後再びモータ２を回転させ
記録先端とマーク部分のFGパルス数を測り紙の判定を行
なう。第４図の２回目はマーク部のゴミがとれて正しく
m,nを測定し給紙が終了しモータ２をOFFした時の状態で
ある。２回目も異常とした場合は、この動作を複数回行
なうこともできる。所定回数行なっても異常と判定した
場合にはLED11を点燈するなどして異常を使用者に知ら
せる。When the copy switch 10 is pressed, the sensor 7 operates normally.
Since there is no recording paper 6 below, the sensor output is Lo. When the recording paper 6 is conveyed and the leading end portion thereof is below the sensor 7, the sensor output becomes Hi, and the mark passing time becomes Lo. The length from the leading edge of the recording paper to the mark is
12 is measured by counting the output of FG1 of motor 2. Similarly, measure the length of the mark. When the number of FG pulses from the leading edge of the recording paper to the mark is normal, the mark is n.
Now, assume that dust or the like adheres to the mark portion and the number of FG pulses becomes n '. When the number of FG pulses from the recording tip to the mark and the mark portion is not m or n, the microcomputer 12 determines that the recording paper 6 is an abnormal paper and causes the motor 2 to rotate in reverse.
Set the forward / reverse rotation signal 17 to Lo. The motor 2 is rotated in the reverse direction, and the recording paper 6 is conveyed in the opposite direction until the leading edge of the recording paper 6 comes again. This is 1
This is the second paper feeding operation. After that, the motor 2 is rotated again, and the number of FG pulses at the leading edge of the recording and the mark portion is measured to determine the paper. At the second time in Fig. 4, dust on the mark part was removed correctly
This is the state when the motor 2 is turned off after the paper feeding is completed after measuring m and n. If the second time is also abnormal, this operation can be performed multiple times. If it is determined that the abnormality has occurred after a predetermined number of times, the LED 11 is turned on to inform the user of the abnormality.

マイクロコンピュータ12に与えるm,nの数はFGパルスと
紙の位相が無関係であるために、ある程度の幅を持たせ
ることもできる。Since the number of m and n given to the microcomputer 12 is independent of the FG pulse and the phase of the paper, it can be given a certain width.

〔発明の効果〕〔The invention's effect〕

本発明によれば、正常紙を数回誤って異常紙と判断した
場合でも、使う人に何度もコピースイッチを押させるこ
となしに、自動的に給紙動作を繰り返しプリント動作に
入るため、使い勝手の良いプリンタが得られる。According to the present invention, even when the normal paper is mistakenly judged to be the abnormal paper several times, the paper feeding operation is automatically repeated and the printing operation is started without causing the user to repeatedly press the copy switch. A user-friendly printer can be obtained.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明のプリンタの１実施例を示す斜視図、第
２図は動作のフローチャート、第３図は制御回路のブロ
ック図、第４図はモータの反転回路の回路図、第５図は
給紙動作のタイミングチャードである。 １…回転量検出器、２…駆動モータ ５−1,5−２…給紙ローラ、６…記録紙 ７−1,7−２…マーク検出器 ８−1,8−２…マーク、９…制御回路 10…コピースイッチ、11…LED、である。FIG. 1 is a perspective view showing an embodiment of a printer of the present invention, FIG. 2 is an operation flowchart, FIG. 3 is a block diagram of a control circuit, FIG. 4 is a circuit diagram of a reversing circuit of a motor, and FIG. Is a timing char for the paper feeding operation. DESCRIPTION OF SYMBOLS 1 ... Rotation amount detector, 2 ... Drive motors 5-1 and 5-2 ... Paper feed roller, 6 ... Recording paper 7-1, 7-2 ... Mark detector 8-1, 8-2 ... Mark, 9 ... Control circuit 10 ... Copy switch, 11 ... LED.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】モーターの駆動力で記録紙の搬送を行う給
紙ローラと、前記記録紙の送り量検出器と、給紙時に前
記記録紙が搬送される経路の近くに取付けられ前記記録
紙の有無及び前記記録紙上の所定のパターンを読みとる
センサーと、前記センサーの出力と前記送り量検出器の
出力とにより前記モーターの制御を行う制御回路と、給
紙動作の開始指令を前記制御回路に与えるスイッチとを
有し、前記制御回路は、給紙動作時に前記センサーから
の所定のセンサー出力が得られていないと判定した場合
に自動的に前記記録紙の戻し動作と給紙動作を複数回行
なうように前記モーターの駆動力を制御することを特徴
とするプリンタ制御回路。1. A paper feed roller for feeding a recording paper by a driving force of a motor, a detector for feeding the recording paper, a recording paper attached near a path for feeding the recording paper at the time of paper feeding. Presence or absence and a sensor for reading a predetermined pattern on the recording paper, a control circuit for controlling the motor by the output of the sensor and the output of the feed amount detector, and a start instruction of a paper feeding operation to the control circuit. The control circuit has a switch for giving a predetermined number of sensor outputs from the sensor during the paper feeding operation, and automatically returns the recording paper and feeds the paper a plurality of times. A printer control circuit, characterized in that it controls the driving force of the motor so as to perform.
JP61247409A 1986-10-20 1986-10-20 Printer control circuit Expired - Lifetime JPH0696301B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61247409A JPH0696301B2 (en) 1986-10-20 1986-10-20 Printer control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61247409A JPH0696301B2 (en) 1986-10-20 1986-10-20 Printer control circuit

Publications (2)

Publication Number Publication Date
JPS63102960A JPS63102960A (en) 1988-05-07
JPH0696301B2 true JPH0696301B2 (en) 1994-11-30

Family

ID=17163005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61247409A Expired - Lifetime JPH0696301B2 (en) 1986-10-20 1986-10-20 Printer control circuit

Country Status (1)

Country Link
JP (1) JPH0696301B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02231327A (en) * 1989-03-06 1990-09-13 Oki Electric Ind Co Ltd Media discrimination device in cassette
JP3337975B2 (en) 1998-04-30 2002-10-28 愛三工業株式会社 Evaporative fuel treatment system canister
JP4900442B2 (en) * 2002-10-18 2012-03-21 コニカミノルタホールディングス株式会社 Inkjet recording device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039031B2 (en) * 1977-06-16 1985-09-04 株式会社リコー automatic paper inserter
JPH0611562B2 (en) * 1983-05-13 1994-02-16 キヤノン株式会社 Inkjet recording device

Also Published As

Publication number Publication date
JPS63102960A (en) 1988-05-07

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