JPS63306045A - Multicolor printer - Google Patents

Multicolor printer

Info

Publication number
JPS63306045A
JPS63306045A JP62142815A JP14281587A JPS63306045A JP S63306045 A JPS63306045 A JP S63306045A JP 62142815 A JP62142815 A JP 62142815A JP 14281587 A JP14281587 A JP 14281587A JP S63306045 A JPS63306045 A JP S63306045A
Authority
JP
Japan
Prior art keywords
mark
sensor
printing
web
distance
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
JP62142815A
Other languages
Japanese (ja)
Inventor
Koichi Karakawa
唐川 公一
Tatsuhiko Yoshimatsu
吉松 龍彦
Hideyuki Tsuchimoto
土本 英幸
Katsumi Hiwatari
樋渡 克己
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.)
KIYOKUTOO INTERNATL KK
Kyokuto International Corp
Original Assignee
KIYOKUTOO INTERNATL KK
Kyokuto International Corp
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 KIYOKUTOO INTERNATL KK, Kyokuto International Corp filed Critical KIYOKUTOO INTERNATL KK
Priority to JP62142815A priority Critical patent/JPS63306045A/en
Publication of JPS63306045A publication Critical patent/JPS63306045A/en
Pending legal-status Critical Current

Links

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

PURPOSE:To perform registering even before printing in addition to registering after printing by disposing mark sensors at the front and rear of a slave unit. CONSTITUTION:A distance l1 from the detecting position of a first mark sensor 52 to a printing point is always constant. A distance from a mark 43 on a plate cylinder 42 to the printing point is always constant and it is so rotated as to become the same as the l1. The distance from a position sensor 56 to the printing point is substantially the same as the l1, and the difference is corrected. A time from when a registor mark is detected by the sensor 52 to when the mark 43 is detected by the sensor 56 or the running distance of a web 12 during the time is measured, and is compared with a correction value l2. If an error is generated from the value l2, the cylinder 42 is accelerated or decelerated that much to be corrected. An error between it and the register mark of printed one is detected by a mark sensor 54, an arithmetic average value or a moving average value of several sheets is calculated, and if an average error is generated, a motor 48 is fed back to be controlled at its rotation.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、多色印刷装置に関し特に多色間の印刷ずれを
修正し得る印刷装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a multicolor printing device, and more particularly to a printing device capable of correcting printing misalignment between multiple colors.

(従来の技術) 従来より、多色印刷装置の色ずれ修正装置すなわち見当
合せ機構は広く知られており、中でも印刷後に各レジス
タマークのずれ(偏位)を光学的センサで検出し、この
誤差信号に基づいて、スレーブユニットの版胴の回転を
制御するものが知られている(例えば特公昭50−33
443号)。
(Prior Art) Conventionally, a color misregistration correction device, that is, a registration mechanism for a multicolor printing device is widely known. It is known to control the rotation of the plate cylinder of a slave unit based on a signal (for example, Japanese Patent Publication No. 50-33
No. 443).

(発明が解決しようとする問題点) ところが、このような修正手段では既に印刷されたパタ
ーンの偏位(ズレ)を検出しているので、最早その印刷
については修正が出来ないという問題があった。
(Problem to be Solved by the Invention) However, since this type of correction means has already detected the deviation (misalignment) of the printed pattern, there is a problem in that it is no longer possible to correct the printing. .

従って本発明の目的とするところは、上記のような印刷
後の見当合せに加えて、印刷前においても見当合わせを
行ない得る印刷装置を提供しようとするものである。
Therefore, an object of the present invention is to provide a printing apparatus that can perform registration before printing in addition to the registration after printing as described above.

(発明の要旨) 上記目的を速やかに達成し得る本発明の要旨とするとこ
ろは、走行するウェブに2色以上の印刷を行なうものに
おいて、前記ウェブに第1のレジスタマークを含む印刷
を施すマスタユニットと、前記ウェブの走行を測定する
走行センサと、前記ウェブに第2色目以後の印刷を施す
スレーブユニットと、スレーブユニットでの印刷を行な
う前に上記レジスタマークの通過を検出する第1のマー
クセンサと、スレーブユニットの印版の回転位置を検出
する位置センサと、スレーブユニットで印刷後前記第1
のレジスタマークとスレーブユニットにより印刷された
第2のレジスタマークとの位置偏位を検出する第2のマ
ークセンサとを備えたことを特徴とする多色印刷装置で
ある。
(Summary of the Invention) The gist of the present invention, which can quickly achieve the above object, is that in a device that prints two or more colors on a running web, a master that prints a first register mark on the web. a running sensor that measures the running of the web, a slave unit that prints a second color and subsequent colors on the web, and a first mark that detects passage of the register mark before printing in the slave unit. a sensor, a position sensor that detects the rotational position of the printing plate of the slave unit, and a position sensor that detects the rotational position of the printing plate of the slave unit;
This is a multicolor printing device characterized by comprising a second mark sensor that detects a positional deviation between the register mark and the second register mark printed by the slave unit.

(発明の構成および作用) 以下本発明について図面に示した実施態様を参照しなが
ら説明するが、本発明がこの実施態様に限定されないこ
とは勿論である。
(Structure and operation of the invention) The present invention will be described below with reference to embodiments shown in the drawings, but it goes without saying that the present invention is not limited to these embodiments.

図面は、本発明の1つの実施態様を示す。アンワインダ
10から繰り出されたウェブ12は、マスタユニット2
0へ至り第1色目の印刷が施される。このマスタユニッ
ト20は、凸版印刷機、凹版印刷機、平版印刷機、ステ
ンシル印刷機などの何れでも良いが、要はウェブ12に
印刷を施しi−謬るものであれば良い。図面では、版胴
22.圧胴24、インキング装置26.モータ28を有
する凸版輪転印刷機を例示している。モータ28の種類
に格別な制限はなく、通常の電動機、サーボモータ、数
値制御式サーボモータなどを使うことができる。
The drawing depicts one embodiment of the invention. The web 12 unwound from the unwinder 10 is transferred to the master unit 2
The value reaches 0 and the first color is printed. The master unit 20 may be a letterpress printing machine, an intaglio printing machine, a lithography printing machine, a stencil printing machine, etc., but in short, it may be any machine that can print on the web 12 and is capable of printing. In the drawing, the plate cylinder 22. Impression cylinder 24, inking device 26. A rotary letterpress printing press having a motor 28 is illustrated. There are no particular restrictions on the type of motor 28, and ordinary electric motors, servo motors, numerically controlled servo motors, etc. can be used.

マスタユニット20で印刷が施されたウェブ12は、走
行センサ30へ至る。この走行センサ30は、この実施
態様では、2つのロール32゜34から成り前記ウェブ
12を挟んでおり、ウェブ12の走行につれて回転する
ように構成されている。前記ロール32.34には回転
検出手段例えばロータリ↓ンコーダが連結されており、
ウェブ12の走行速度および/または走行距離を測定す
ることができる。前記走行センサ30の取付位置に格別
な限定はないが、走行ウェブの伸長、たるみ、バタツキ
などの要因を考慮すると、なるべくスレーブユニット4
0に近い場所が良い。
The web 12 printed by the master unit 20 reaches the travel sensor 30. In this embodiment, the running sensor 30 is composed of two rolls 32 and 34 sandwiching the web 12, and is configured to rotate as the web 12 runs. Rotation detection means, such as a rotary ↓ encoder, is connected to the rolls 32, 34,
The running speed and/or distance of the web 12 can be measured. There is no particular limitation on the mounting position of the traveling sensor 30, but considering factors such as elongation, sagging, and flapping of the traveling web, it is preferable to attach the traveling sensor 30 to the slave unit 4.
A place close to 0 is good.

走行センサ30を経たウェブ12は、第1のマークセン
サ52へ至る。次いでウェブ12はスレーブユニット4
0へ至り第2色目の印刷が施される。尚、図面において
は、スレーブユニットは1つのみを示しているが、これ
に限ることなく複数個にし得ることは言うまでもない。
The web 12 passes through the travel sensor 30 and reaches the first mark sensor 52 . The web 12 is then connected to the slave unit 4
0, and the second color is printed. Note that although only one slave unit is shown in the drawings, it goes without saying that the slave unit is not limited to this and that a plurality of slave units may be provided.

スレーブユニットでの印刷が終了したウェブ12は、第
2のマークセンサ54を経てリワインダ14に至る。
The web 12 that has been printed by the slave unit passes through the second mark sensor 54 and reaches the rewinder 14 .

次に、見当合わせ制御についてより詳細に説明する。第
1のマークセンサ52の検出位置から印刷点までの距離
は常に一定である。この距離をにする)から印刷点まで
の距離は常に一定で而もglと同一となるように回転さ
せる。位置センサ56から印刷点まで距離をg、と同一
にするのが良いが同一にすることは困難であるので、は
ぼ同一とじ、その差を補正する。補正値を92とし、位
置センサ56から印刷点までの距離をΩ、とすると、下
式が成立する。
Next, registration control will be explained in more detail. The distance from the detection position of the first mark sensor 52 to the printing point is always constant. The distance from this distance to the printing point is always constant and is rotated so that it is the same as gl. It is preferable to make the distance from the position sensor 56 to the printing point the same as g, but it is difficult to make it the same, so the distance is almost the same and the difference is corrected. When the correction value is 92 and the distance from the position sensor 56 to the printing point is Ω, the following formula holds true.

ft、−11±g2・・・・・・・・・・・・・・・式
(1)今、第1のマークセンサ52にてレジスタマーク
が検出された時から、マーク43が位置センサ56にて
検出される時までの時間又はその間のウェブ12の走行
距離を測定し、上記補正値Ω2と比較する。補正値g2
と誤差が生ずる場合は、その分だけ版胴42の回転を加
速又は減速することによって補正を行なう。この段階で
の補正は、印刷毎に個別補正が行なわれるので、印刷ロ
スを少なくするという利点がある反面、誤差の周期が大
きく数枚乃至は数10枚単位でずれる場合にも個別に補
正を行なわなければならない不都合が生ずる。
ft, -11±g2......Equation (1) Now, from the time when the register mark is detected by the first mark sensor 52, the mark 43 has been detected by the position sensor 56. The time until the time when the web 12 is detected or the traveling distance of the web 12 during that time is measured and compared with the correction value Ω2. Correction value g2
If an error occurs, correction is made by accelerating or decelerating the rotation of the plate cylinder 42 by that amount. Since the correction at this stage is performed individually for each print, it has the advantage of reducing printing loss, but on the other hand, it is also necessary to make individual corrections when the error cycle is large and the deviation occurs by a few sheets or several tens of sheets. There will be some inconvenience that you will have to do.

そこで本発明では大周期の変動即ち誤差を補正すべく、
第2のマークセンサ54で印刷済のレジスタマーク間の
誤差を検出すると共に数枚分(例えば5枚分)の算術平
均値又は移動平均値を算出し、平均誤差が生ずれば、モ
ータ48にフィードバックをかけてモータ48の回転を
制御する。
Therefore, in the present invention, in order to correct large-period fluctuations, that is, errors,
The second mark sensor 54 detects the error between the printed register marks and calculates the arithmetic average value or moving average value for several sheets (for example, five sheets), and if an average error occurs, the motor 48 The rotation of the motor 48 is controlled by applying feedback.

上記ml及び第2のマークセンサ52.54並びに位置
センサ56からの各検出信号はコントロールユニツ)5
0へ伝達されこのユニット50にて演算その他の処理が
行なわれる。
The detection signals from the ml, second mark sensor 52, 54 and position sensor 56 are controlled by the control unit) 5.
0, and calculation and other processing are performed in this unit 50.

(発明の効果) 本発明装置では上述の如く、マークセンサをスレーブユ
ニットの前後に配したので極めて精度の高い見当合わせ
を行ない得るという利点がある。
(Effects of the Invention) As described above, the apparatus of the present invention has the advantage of being able to perform registration with extremely high precision because the mark sensors are arranged before and after the slave unit.

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

図面は、本発明装置の1つの実施態様を示す構成図であ
る。 20・・・マスタユニット、30・・・走行センサ。 40・・・スレーブユニット、52・・・第1のマーク
センサ、54・・・第2のマークセンサ。 56・・・位置センサ。
The drawing is a configuration diagram showing one embodiment of the device of the present invention. 20... Master unit, 30... Traveling sensor. 40...Slave unit, 52...First mark sensor, 54...Second mark sensor. 56...Position sensor.

Claims (1)

【特許請求の範囲】 走行するウェブに2色以上の印刷を行なうものにおいて
、 (イ)前記ウェブに、第1のレジスタマークを含む印刷
を施すマスタユニットと、 (ロ)前記ウェブの走行を測定する走行センサと、 (ハ)前記ウェブに第2色目以後の印刷を施すスレーブ
ユニットと、 (ニ)スレーブユニットでの印刷を行なう前に、上記レ
ジスタマークの通過を検出する第1のマークセンサと、 (ホ)スレーブユニットの印版の回転位置を検出する位
置センサと、 (ヘ)スレーブユニットで印刷後、前記第1のレジスタ
マークとスレーブユニットにより印刷された第2のレジ
スタマークとの位置偏位を検出する第2のマークセンサ
と、 を備えたことを特徴とする多色印刷装置。
[Scope of Claims] A device for printing two or more colors on a running web, comprising: (a) a master unit that prints a first register mark on the web; and (b) measuring the running of the web. (c) a slave unit that prints second and subsequent colors on the web; and (d) a first mark sensor that detects passage of the register mark before printing in the slave unit. (e) a position sensor that detects the rotational position of the printing plate of the slave unit; and (f) a positional deviation between the first register mark and the second register mark printed by the slave unit after printing by the slave unit. A multicolor printing device comprising: a second mark sensor that detects the position of the mark;
JP62142815A 1987-06-08 1987-06-08 Multicolor printer Pending JPS63306045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62142815A JPS63306045A (en) 1987-06-08 1987-06-08 Multicolor printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62142815A JPS63306045A (en) 1987-06-08 1987-06-08 Multicolor printer

Publications (1)

Publication Number Publication Date
JPS63306045A true JPS63306045A (en) 1988-12-14

Family

ID=15324271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62142815A Pending JPS63306045A (en) 1987-06-08 1987-06-08 Multicolor printer

Country Status (1)

Country Link
JP (1) JPS63306045A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039844A (en) * 1989-06-06 1991-01-17 Nippon Reliance Kk Control system in multi-color printer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039844A (en) * 1989-06-06 1991-01-17 Nippon Reliance Kk Control system in multi-color printer

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