JPH0483640A - Dampening water controller - Google Patents
Dampening water controllerInfo
- Publication number
- JPH0483640A JPH0483640A JP2196367A JP19636790A JPH0483640A JP H0483640 A JPH0483640 A JP H0483640A JP 2196367 A JP2196367 A JP 2196367A JP 19636790 A JP19636790 A JP 19636790A JP H0483640 A JPH0483640 A JP H0483640A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- water
- film thickness
- forme
- water film
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 32
- 238000011109 contamination Methods 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、平版印刷機のオフセット印刷機の湿し水供給
に適用される自動制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic control device applied to supplying dampening water to an offset printing press of a lithographic printing press.
平版印刷機では、周知のように良好な印刷物を得るため
には、インキと湿し水との供給量を適正範囲内に保持す
る必要がある。例えば、湿し水の供給量がインキ供給に
対して少なすぎると、画線部以外にもインキが着いてい
わゆる汚れ（シャドウ網点部のＦ ｉｌｌｉｎｇ ｉ
ｎ、地汚れなど）が生じる。As is well known, in a lithographic printing press, in order to obtain good printed matter, it is necessary to maintain the amounts of ink and dampening water supplied within appropriate ranges. For example, if the amount of dampening water supplied is too small relative to the ink supply, ink will adhere to areas other than the printed areas, causing so-called stains (Filling i in shadow halftone areas).
n, background stains, etc.).
逆に、湿し水供給量が過剰であると、インキ転写不良に
よる印刷濃度不良や水マークといった水魚は現象が生じ
る。現在、−Ｃには、オペレータが定期的に印刷物の仕
上がり及び版面の濡れ具合を監視評価し、先の適正範囲
に保つべく、湿し水供給量を増減している。オペレータ
はこの監視のために常に機械から離れられず、かつ、監
視のために熟練を要する。そこで、この湿し水供給量の
調節を自動化し、オペレータの省力化−ノンスキル化及
び印刷品質の安定を狙った試みがなされつつある。特公
昭５７−１８２６２２．特公昭５８−１５３６５５．特
公昭５Ｂ −２１７３５５，特公昭５９−１５６７５４
．特公昭５９２１１８３０、特公昭６１−８９０４７な
どがその試みである。On the other hand, if the amount of dampening water supplied is excessive, water fish problems such as poor printing density and water marks due to poor ink transfer will occur. Currently, at -C, the operator regularly monitors and evaluates the finish of printed matter and the wetness of the plate surface, and increases or decreases the amount of dampening water supplied to keep it within the appropriate range. The operator cannot leave the machine unattended at all times for this purpose and requires skill. Therefore, attempts are being made to automate the adjustment of the amount of dampening water supplied in order to save the operator's labor and require less skill, and to stabilize printing quality. Special Publication Showa 57-182622. Special Publication Showa 58-153655. Special public Sho 5B-217355, Special public Sho 59-156754
．． Attempts include the Special Publication No. 59211830 and the Special Publication No. 61-89047.
それらは、細部では異なっているが、大略は次のようで
ある。They differ in detail, but the general outline is as follows.
平版印刷機の１つの印刷ユニットの版胴囲りの外観構成
を第５図に示す。FIG. 5 shows the external configuration of the plate barrel surrounding one printing unit of a lithographic printing press.
第５図において、版胴９の外周上に装着された版８の非
画線部に付着する湿し水膜を計測できる水膜厚さ計１が
設置される。この水膜厚さ計１は水Ｈ厚さの大小によっ
て変化する赤外線の吸収度合いやレーザ光の反射度合い
より水腹厚さが定量計測できるものであり、図示しない
移動装置によりガイドレール１０上を移動し、中方向の
任意の位置に設定し得る。In FIG. 5, a water film thickness meter 1 is installed on the outer periphery of the plate cylinder 9 and is capable of measuring the dampening water film adhering to the non-printing area of the plate 8. This water film thickness gauge 1 is capable of quantitatively measuring the water thickness based on the degree of absorption of infrared rays and the degree of reflection of laser light, which change depending on the thickness of the water H. It can be moved and set at any position in the middle direction.
また、版胴駆動系にロータリーエンコーダを設けるなど
により、予め設定された円周上の位置において、水腹厚
さが検出できるようになっている。Furthermore, by providing a rotary encoder in the plate cylinder drive system, the thickness of the water belly can be detected at a preset position on the circumference.
検出された水膜厚さの検出信号は、制御装置７に取り込
まれ、ここで予め設定された最適水膜厚さ、即ち、目標
水膜厚さと比較される。もし、両者に差があるときには
、その差を零とすべき制御信号、即ち、水元ローラ５の
回転数増減信号を電動４ａ６に与える。これにより、版
８の非画線部に付着する水膜を自動的に適正値に保つこ
とができる。The detected water film thickness detection signal is taken into the control device 7, where it is compared with a preset optimal water film thickness, that is, a target water film thickness. If there is a difference between the two, a control signal to make the difference zero, that is, a signal to increase or decrease the rotational speed of the water head roller 5 is given to the electric motor 4a6. Thereby, the water film adhering to the non-image area of the plate 8 can be automatically maintained at an appropriate value.
汚れがなく、かつ、印刷濃度不足や水マークのない印刷
物の得られる最適な版面非画線部の水腹厚さが常に一定
であれば、上述のように、常に予め固定された最適水膜
厚さ、即ち、目標水膜厚さを維持すれば良い。If the thickness of the water pad in the non-image area of the printing plate is always constant, the optimum water film thickness is always fixed in advance, as described above, so that printed matter is free from stains, lack of printing density, and water marks. It is sufficient to maintain the thickness, that is, the target water film thickness.
しかしながら、実際には、インキローラ群銀囲りの温湿
度、印刷速度、インキ供給量によって適正な水膜厚さは
変化してしまう。However, in reality, the appropriate water film thickness changes depending on the temperature and humidity surrounding the ink roller group, printing speed, and ink supply amount.
実例として、インキローラ群囲りの温湿度による適正な
水膜厚さの変化の計測例を第３図に示す。As an actual example, FIG. 3 shows an example of measuring changes in the appropriate water film thickness depending on the temperature and humidity around the ink roller group.
このように適正水膜厚さの変化のために、制御していに
もかかわらず、汚れや水マークが発生するという不具合
がある。Due to such changes in the appropriate water film thickness, there is a problem in that dirt and water marks occur despite control.
そこで、インキローラ群での温湿度、インキ供給量、印
刷速度などによる最適水膜厚さの変化量を実験によって
把握し、適正水膜厚さの予測式を作成する。制御装置で
は、この予測式を基に適正水腹厚さを推定し、これと検
出された水膜厚さと比較し、もし両者に差があるときに
は、その差を零とすべき制御信号を湿し水供給装置に送
る。Therefore, we conducted experiments to understand the amount of change in the optimal water film thickness due to temperature and humidity, ink supply amount, printing speed, etc. in the ink roller group, and created a formula for predicting the appropriate water film thickness. The control device estimates the appropriate water thickness based on this prediction formula, compares it with the detected water film thickness, and if there is a difference between the two, sends a control signal to reduce the difference to zero. The water is sent to the water supply system.
これにより、インキローラ群囲りの温湿度などの適正水
腹厚さを変動させる要因が制御中に変化しても、それに
伴い目標水膜厚さが自動的に修正されるため、従来技術
における汚れや水マークなどの発生が防止できる。As a result, even if factors that fluctuate the appropriate water layer thickness, such as temperature and humidity surrounding the ink roller group, change during control, the target water film thickness is automatically corrected accordingly. It can prevent stains and water marks from occurring.
インキローラ群囲りの温湿度などの適正水Ｍ厚さを変動
させる要因が制御中に変化しても、それに伴い目標水膜
厚さが自動的に修正されるため、汚れや水マークなどの
発生が防止できる。Even if factors that fluctuate the appropriate water M thickness, such as temperature and humidity around the ink roller group, change during control, the target water film thickness is automatically corrected accordingly, so dirt, water marks, etc. Occurrence can be prevented.
しかしなから、実際には、マシン立ち上がり時にはイン
キローラ群及び版面上に湿し水が供給されておらず適正
な水膜厚さになるまで横紙がでる。However, in reality, when the machine starts up, dampening water is not supplied to the ink roller group and the printing plate surface, and horizontal paper appears until the appropriate water film thickness is reached.
実例として、マシン立ち上がり時における版胴の外周上
に装着された版の非画線部に付着する湿し水膜厚さの変
化の計測例を第４図に示す。このように水膜厚さの変化
のために、従来の方法では制御しているにも拘らず、汚
れや水マークが発生するという不具合がある。As an actual example, FIG. 4 shows an example of measuring changes in the thickness of the dampening water film adhering to the non-image area of the plate mounted on the outer periphery of the plate cylinder when the machine is started up. Due to such changes in the water film thickness, there is a problem in that dirt and water marks occur despite being controlled in the conventional method.
Ｃ課題を解決するための手段〕
上記の不具合を改良するため、バイパスローラを水着ロ
ーラ及びインキ着ローラに接触させることによって、イ
ンキローラ群及び版面上に予め水供給ローラから湿し水
を供給しておき、適正水膜厚さと検出された版面上水膜
厚さと比較し、もし両者に差があるときには、その差を
零とすべき制御信号を湿し水供給装置に送る。そして、
版面上の水膜厚さが適正になった際、制御装置から信号
を与え、インキ着ローラ着、続いてバイパス・ローラ脱
とする。それからシート・バス信号を与えて、印刷開始
にする。それ以後は、従来通り、前述のように版面上の
水膜厚さと適正水膜厚さとの偏差を０とするように湿し
水制御装置に信号を与え、水供給量を自動制御する。Measures for Solving Problem C] In order to improve the above problem, dampening water is supplied in advance from the water supply roller onto the ink roller group and the printing plate by bringing the bypass roller into contact with the bathing roller and the ink forming roller. Then, the proper water film thickness is compared with the detected water film thickness on the printing plate, and if there is a difference between the two, a control signal is sent to the dampening water supply device to make the difference zero. and,
When the thickness of the water film on the printing plate becomes appropriate, a signal is given from the control device to cause the ink to land on the form roller, and then to remove the bypass roller. Then give the sheet bus signal to start printing. Thereafter, as before, a signal is given to the dampening water control device to automatically control the amount of water supplied so that the deviation between the water film thickness on the printing plate and the appropriate water film thickness is zero, as described above.
〔作 用］
そして上記の手段によりマシン立ち上げ時においても、
予め水供給ローラからインキローラ群及び版面上に湿し
水が供給され、版面上の水膜厚さが目標版面水膜厚さと
一致しているため、従来技術における刷り始めの汚れや
水マークなどの発生が防止できる。[Function] By using the above method, even when starting up the machine,
Dampening water is supplied from the water supply roller to the ink roller group and the printing plate in advance, and the thickness of the water film on the printing plate matches the target water film thickness on the printing plate, which eliminates stains and water marks at the beginning of printing in the conventional technology. can be prevented from occurring.
［実施例］
本発明の一実施例を第１図により説明する。従来のもの
と同様に、最終インキ着はローラ１４ａ。[Example] An example of the present invention will be described with reference to FIG. As in the conventional case, the final ink is applied to the roller 14a.
１４ｂ、 １４ｃ、 １４ｄとの接触終了後での版８の
非画線部に付着する記し水が計測できろ水膜厚さ計１が
設置される。この水膜厚さ計１は図示しない移動装置に
よりガイドレール１０上を移動し、巾方向の任意の位置
に固定される。巾方向においてインキ供給量が最大の箇
所が最も湿し水を多量に必要とすることから、通常巾方
向でインキ供給量が最大、即ち、画線率が最大の位置に
固定する。また、版胴駆動系にロータリーエンコーダを
用いるなどにより、常に絵柄の終了位置から切り欠き開
始位置Ａまでの傾城においてのみ水膜厚さを計測するよ
うに設定すれば、画線と非画線の区別を認別する必要が
なく簡易なシステムとなる。A water film thickness meter 1 is installed to measure the marking water adhering to the non-image area of the plate 8 after the contact with the printing plates 14b, 14c, and 14d is completed. This water film thickness gauge 1 is moved on a guide rail 10 by a moving device (not shown) and fixed at an arbitrary position in the width direction. Since the location where the ink supply amount is maximum in the width direction requires the largest amount of dampening water, it is usually fixed at the position where the ink supply amount is maximum in the width direction, that is, the drawing ratio is maximum. In addition, by using a rotary encoder in the plate cylinder drive system, etc., it is possible to always measure the water film thickness only at the tilted wall from the end position of the pattern to the notch start position A. It becomes a simple system as there is no need to recognize the distinction.
この水膜厚さ計１に加えて、インキ練りローラ群間りの
温湿度を計測する温湿度計２をインキローラ群の近くに
設置する。また、印刷速度を検知するための回転計３を
設置し、版胴９の回転数を計測し、変位計４によってイ
ンキ元ローラ１Ｇとインキ掻き取りブレード１７との隙
間δを計測することによりインキ供給量を検知する。検
知された水膜厚さ、インキローラ群間りのｍ湿度、印刷
速度及びインキ供給量の信号は制御装置７に取り込まれ
る。制御装置７では、まず、インキ練りローラ群間りの
温湿度、インキ供給量及び印刷速度の値を、予め、実験
的に求められている適正水膜厚さｔＴを算出する。In addition to the water film thickness meter 1, a temperature and humidity meter 2 for measuring the temperature and humidity between the ink mixing roller groups is installed near the ink roller groups. In addition, a tachometer 3 for detecting the printing speed is installed to measure the number of rotations of the plate cylinder 9, and a displacement meter 4 measures the gap δ between the ink source roller 1G and the ink scraping blade 17. Detect supply amount. The detected signals of the water film thickness, the humidity between the ink roller groups, the printing speed, and the ink supply amount are taken into the control device 7. The control device 7 first calculates in advance the appropriate water film thickness tT determined experimentally from the values of temperature and humidity, ink supply amount, and printing speed between the ink mixing roller groups.
次に、検知された水膜厚さＬＡとこの適正水膜厚さｔＴ
を比較し、もし、両者に差があるときにはその差を零と
すべき制御信号即ち水元ローラ５の回転数増減信号を水
元ローラ駆動電動機６に与え水元ローラ５の回転数を自
動的に調節する。Next, the detected water film thickness LA and this appropriate water film thickness tT
If there is a difference between the two, a control signal to make the difference zero, that is, a signal to increase or decrease the rotation speed of the water head roller 5 is given to the water head roller drive motor 6 to automatically change the rotation speed of the water head roller 5. Adjust to
以上は、マシン立ち上げ時を除く通常印刷時の制御であ
るが、マシン立ち上げ時は特別に、第２図を参照に述べ
る。先ず、インキ着ローラ１４ａ１４ｂ、 １４ｃ、
１４ｄを版８に対して脱にし、バイパスローラ１１をイ
ンキ着ローラ１４（Ｉ及び水着はローラ１２に対し着に
する。また、水着はローラエ２は版８に対し着にする。The above is the control during normal printing except when the machine is started up, but the time when the machine is started up will be specifically described with reference to FIG. First, the ink forming rollers 14a14b, 14c,
14d is removed from the plate 8, and the bypass roller 11 is placed on the ink forming roller 14 (I) and the swimsuit is placed on the roller 12. Also, the swimsuit roller 2 is placed on the plate 8.
それによって、温し水をインキ練りローラ群１３及び版
８上に供給し、版８上水膜厚さを適正版面水膜厚さに保
つ。版８上水膜厚さが適正版面水膜厚さになったと同時
に制御装置７より、インキ着ローラ着脱装置１８にイン
キ着ローラ着信号１９を与え、インキ着ローラ１４ａ、
１４ｂ、 １４ｃ１４ｄを版８に対して着にし、それ
と同時にバイパスローラ着膜装置２０にバイパスローラ
脱信号２１を与え、バイパスローラ１１をインキ着ロー
ラ８．ｄ及び水着はローラ１２に対して脱とする。以上
の制御が終わった後、制御装置７より印刷機にシート・
パス信号２１を送り印刷を開始する。但し、バイパスロ
ーラ１１は印刷障害（水口等）を防止するためにインキ
着ローラ１４．ｄ及び水着ローラ１２に対して着のまま
印刷する場合もある。As a result, warm water is supplied onto the ink mixing roller group 13 and the plate 8, and the thickness of the water film on the plate 8 is maintained at an appropriate thickness. At the same time when the water film thickness on the plate 8 reaches the appropriate plate surface water film thickness, the control device 7 gives an ink form roller arrival signal 19 to the ink form roller attaching/detaching device 18, and the ink form roller 14a,
14b, 14c and 14d are applied to the plate 8, and at the same time, a bypass roller removal signal 21 is given to the bypass roller film forming device 20, and the bypass roller 11 is transferred to the ink forming roller 8. d and the swimsuit are taken off on the roller 12. After the above control is completed, the control device 7 sends the sheet to the printing machine.
A pass signal 21 is sent to start printing. However, the bypass roller 11 is connected to the ink forming roller 14 in order to prevent printing problems (water holes, etc.). d and the swimsuit roller 12 may be printed as they are.
本発明による湿し水制御装置には、予め湿し水をインキ
着ローラ群及び版面上に供給する手段と、版胴の回転数
を検知する手段と、インキ練りローラ群近傍の温度、湿
度を検知する手段と、インキ供給品を検知する手段と、
版胴の幅方向に移動可能に取り付けられた版胴表面の水
膜厚さを検知する手段と、前記回転数、温度、湿度及び
インキ供給品から最適水膜厚さを演算する手段と、前記
最適水膜厚さと版胴表面の水膜厚さとを比較演算する手
段と、前記比較演算の結果に基づいてインキ着ローラ及
びバイパスコーラを自動的に着脱する手段と、前記比較
演算の結果に基づいて水元ローラを制御する手段とから
なることにより、次の効果を有する。The dampening water control device according to the present invention includes a means for supplying dampening water onto the ink forming roller group and the plate surface, a means for detecting the number of rotations of the plate cylinder, and a means for detecting the temperature and humidity in the vicinity of the ink mixing roller group. a means for detecting; a means for detecting an ink supply;
means for detecting the water film thickness on the surface of the plate cylinder mounted movably in the width direction of the plate cylinder; means for calculating the optimum water film thickness from the rotation speed, temperature, humidity and ink supplies; means for comparing and calculating the optimum water film thickness and the water film thickness on the plate cylinder surface; means for automatically attaching and detaching the ink forming roller and the bypass cola based on the result of the comparison calculation; and based on the result of the comparison calculation. By comprising means for controlling the water head roller, the following effects can be obtained.
定常運転の印刷品質の安定は勿論のこと、マシン立ち上
げ時においても、予め水元ローラがらバイパスローラを
介してインキ着ローラ群及び版面上に湿し水が供給され
、版面上の水膜厚さが１楼水膜厚さと一致しているため
、従来技術におけるマシン立ち上げ時の乳化不安定によ
って生しる汚れや水マークの不具合が、解消できる。Not only does printing quality remain stable during regular operation, but dampening water is supplied in advance from the water source roller to the ink form roller group and onto the plate surface via a bypass roller when the machine is started up, and the thickness of the water film on the plate surface is maintained. Since the thickness corresponds to the water film thickness, problems with stains and water marks caused by unstable emulsification during machine start-up in conventional technology can be eliminated.
第１図は本発明の実施例に係わる損紙低減装置の概略配
置図、第２図はマシン立ち上げ時における制御を示す図
、第３図はインキローラ群間りの／ｌ！１温度の違いに
よる適正水膜範囲の変化を示す線図、第４図はマシン立
ち上がり時におけるインキローラ上の含水率の経時変化
を示す図、第５図は従来の水量制御装置を示す概略配置
図である。
１・・・水ｎり厚さ計 ２・・・温湿度計３・・
・回転計 ４・・・変位計５・・・水元ロー
ラ ７・・・制御装置９・・・版胴
１１・・バイパスローラ１２・・・水着ローラ
１３・・・インキ練りローラ１４・・・インキ着ロー
ラ
第３図FIG. 1 is a schematic layout diagram of a paper waste reduction device according to an embodiment of the present invention, FIG. 2 is a diagram showing control at the time of machine startup, and FIG. 3 is a diagram showing /l! between ink roller groups. Figure 4 is a diagram showing changes in the appropriate water film range due to temperature differences; Figure 4 is a diagram showing changes over time in the water content on the ink roller when the machine starts up; Figure 5 is a schematic layout showing a conventional water flow control device. It is a diagram. 1...Water thickness gauge 2...Temperature/hygrometer 3...
- Rotation meter 4... Displacement meter 5... Water head roller 7... Control device 9... Plate cylinder
11... Bypass roller 12... Swimsuit roller
13... Ink kneading roller 14... Ink forming roller Fig. 3
Claims (1)
傍の温度、湿度を検知する手段と、インキ供給量を検知
する手段と、版胴の幅方向に移動可能に取り付けられた
版胴表面の水膜厚さを検知する手段と、前記回転数、温
度、湿度及びインキ供給量から最適水膜厚さを演算する
手段と、前記最適水膜厚さと版胴表面の水膜厚さとを比
較演算する手段と、前記比較演算の結果に基づいてイン
キ着ローラ、水着ローラ及びバイパスローラを自動的に
着脱する手段と、前記比較演算の結果に基づいて水元ロ
ーラを制御する手段とから構成されたことを特徴とする
湿し水制御装置。means for detecting the number of rotations of the plate cylinder; means for detecting temperature and humidity in the vicinity of the ink mixing roller group; means for detecting the ink supply amount; and a plate cylinder surface mounted movably in the width direction of the plate cylinder. means for detecting the water film thickness of the plate cylinder, means for calculating the optimum water film thickness from the rotation speed, temperature, humidity and ink supply amount, and comparing the optimum water film thickness with the water film thickness on the plate cylinder surface. The method comprises means for calculating, means for automatically attaching and detaching the ink form roller, swimsuit roller and bypass roller based on the result of the comparison operation, and means for controlling the water head roller based on the result of the comparison operation. A dampening water control device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196367A JP2862347B2 (en) | 1990-07-26 | 1990-07-26 | Printing machine dampening water supply apparatus and printing machine dampening water supply method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196367A JP2862347B2 (en) | 1990-07-26 | 1990-07-26 | Printing machine dampening water supply apparatus and printing machine dampening water supply method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0483640A true JPH0483640A (en) | 1992-03-17 |
| JP2862347B2 JP2862347B2 (en) | 1999-03-03 |
Family
ID=16356678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2196367A Expired - Fee Related JP2862347B2 (en) | 1990-07-26 | 1990-07-26 | Printing machine dampening water supply apparatus and printing machine dampening water supply method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2862347B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029577A (en) * | 1997-03-06 | 2000-02-29 | Ryobi Ltd. | Dampening volume control apparatus for offset press and a method for controlling dampening volume therefor |
| JP2009241612A (en) * | 2004-05-05 | 2009-10-22 | Manroland Ag | Damping unit for printer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54114309A (en) * | 1978-02-24 | 1979-09-06 | Dainippon Printing Co Ltd | Offset printer |
| JPS58153655A (en) * | 1982-03-10 | 1983-09-12 | Toppan Printing Co Ltd | Method and device for supplying ink and dampening water |
| JPS6327259A (en) * | 1986-07-21 | 1988-02-04 | Mitsubishi Heavy Ind Ltd | Apparatus for automatically controlling ink and dampening water in planographic printing press |
-
1990
- 1990-07-26 JP JP2196367A patent/JP2862347B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54114309A (en) * | 1978-02-24 | 1979-09-06 | Dainippon Printing Co Ltd | Offset printer |
| JPS58153655A (en) * | 1982-03-10 | 1983-09-12 | Toppan Printing Co Ltd | Method and device for supplying ink and dampening water |
| JPS6327259A (en) * | 1986-07-21 | 1988-02-04 | Mitsubishi Heavy Ind Ltd | Apparatus for automatically controlling ink and dampening water in planographic printing press |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029577A (en) * | 1997-03-06 | 2000-02-29 | Ryobi Ltd. | Dampening volume control apparatus for offset press and a method for controlling dampening volume therefor |
| JP2009241612A (en) * | 2004-05-05 | 2009-10-22 | Manroland Ag | Damping unit for printer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2862347B2 (en) | 1999-03-03 |
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