JPS6225238A - Method and instrument for measuring amount of damping water for plate surface of lithographic printing machine - Google Patents
Method and instrument for measuring amount of damping water for plate surface of lithographic printing machineInfo
- Publication number
- JPS6225238A JPS6225238A JP60163942A JP16394285A JPS6225238A JP S6225238 A JPS6225238 A JP S6225238A JP 60163942 A JP60163942 A JP 60163942A JP 16394285 A JP16394285 A JP 16394285A JP S6225238 A JPS6225238 A JP S6225238A
- Authority
- JP
- Japan
- Prior art keywords
- infrared rays
- amount
- plate surface
- dampening water
- lithographic printing
- 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
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
「発明の目的ｊ
（産業上の利用分野）
本発明は、平版印刷機の印刷版面上の湿し水を測定する
方法および装置に関する。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a method and apparatus for measuring dampening water on a printing plate surface of a lithographic printing press.
（従来の技術）
平版印刷においては、印刷版面上に供給された湿し水量
の過不足が印刷物の品質に重大な影響を及ぼす。従来よ
り、印刷機のオペレーターは印刷版面上の光の反射量、
光沢等から経験的に湿し水量の過不足を知るか、あるい
は印刷物を頻繁に検査することにより湿し水量を管理し
ているが、 ｌｌｌｉｔ人差１判断精度、熟練を要する
などの問題から、湿し水量の自動制御化への要望は非常
に大きい。(Prior Art) In lithographic printing, excess or deficiency in the amount of dampening water supplied onto the printing plate has a significant effect on the quality of printed matter. Traditionally, printing press operators have been able to determine the amount of light reflected on the printing plate surface,
The amount of dampening water is controlled by empirically determining whether the amount of dampening water is excessive or insufficient based on gloss, etc., or by frequently inspecting printed matter, but due to problems such as the accuracy of judgment and the need for skill, There is a great demand for automatic control of the amount of dampening water.
版面上の湿し水量を検知する方法としては、光源より反
射される赤外線を平版印刷機版面に照射し。A method for detecting the amount of dampening water on the printing plate is to irradiate the printing press plate with infrared rays reflected from a light source.
咳版面から反射された赤外線により湿し水によって吸収
を受けた特定の波長の赤外線の減衰量を検出して、咳版
面の湿し水量を測定する方法は、一般的に知られている
が、これらは光源から放射される連続光線の光路中で水
が吸収を起こす波長の赤外線のみを透過するフィルター
と該波長の近傍で水による吸収のない波長の赤外線のみ
を透過するフィルターの２種類のフィルターを備えたフ
ィルターホイールを回転（チョッピング）させ、該フィ
ルターホイールを通過した２種の展長の赤外線を交互に
測定試料に照射させた後、試料より反射する２種の波長
の赤外線の強度を赤外線検知器で検出し、水の量に応じ
た吸収を受けて減衰した一方の波長の赤外線強度と。A method of measuring the amount of dampening water on a cough plate by detecting the amount of attenuation of infrared rays of a specific wavelength absorbed by the dampening water from the infrared rays reflected from the cough plate is generally known. These are two types of filters: a filter that transmits only infrared rays at wavelengths that are absorbed by water in the optical path of continuous light emitted from a light source, and a filter that transmits only infrared rays at wavelengths that are not absorbed by water in the vicinity of the wavelengths. After rotating (chopping) a filter wheel equipped with a The infrared intensity of one wavelength is detected by a detector and attenuated by absorption according to the amount of water.
水による吸収減衰を受けていない他方の波長の赤外線強
度との差を求め、この差を水分量に換算することにより
、水分量を測定する方式が殆どである。Most methods measure the amount of water by finding the difference between the infrared intensity of the other wavelength that has not undergone absorption attenuation by water and converting this difference into the amount of water.
これらの装置では、フィルターホイールにより連続光線
をチョッピングすることが必要で、しかも２種類の波長
の赤外線を交互に照射させるため、高速印刷機等では版
面の移動速度が大、きいため実際には２種の波長の赤外
線が照射される位置が微妙にずれてしまうという欠点が
あった。In these devices, it is necessary to chop a continuous light beam using a filter wheel, and in addition, in order to irradiate infrared rays of two different wavelengths alternately, in high-speed printing machines, etc., the moving speed of the plate is large, so in practice There was a drawback that the position where the infrared rays of the seed wavelength were irradiated was slightly shifted.
またこれらを改良するため、フィルターホイールを使用
せず、キセノン放電管等で光源から照射される光線その
ものを断続させることにより、擬似チョッピングを行な
わせる方式も知られている。In order to improve these problems, a method is also known in which pseudo-chopping is performed by intermittent light rays emitted from a light source using a xenon discharge tube or the like without using a filter wheel.
しかし、これらはいずれも光線を断続させているため版
面上の一箇所あるいは数箇所を断続的に測定することし
かできない。However, since all of these methods use intermittent light beams, they can only measure one or several locations on the printing plate intermittently.
（発明が解決しようとする問題点）
本発明はこれらの欠点を改良し２版面上の水分量をとぎ
れることなしに連続的に測定することを可能とするもの
である。(Problems to be Solved by the Invention) The present invention improves these drawbacks and makes it possible to measure the moisture content on two printing plates continuously without interruption.
「発明の構成」
（問題点を、解決するための手段）
すなわち２本発明は、光源より放射される赤外線を平版
印刷機版面に照射し、該非画線部から反射された赤外線
により、湿し水によって吸収を受けた特定の波長の赤外
線の減衰量を検出して咳版面の湿し水量を測定する方法
において、該赤外線の減衰量を検出する素子（センサー
）としてゲルマニウムフォトダイオードを用いることに
より、赤外線をチョッピングさせず１版面の湿し水量を
連続的に測定する方法である。さらにはハロゲンランプ
、ヨウ素ランプ、タングステンランプ、キセノンランプ
等の光源、該光源からの赤外線を平版印刷機版面の湿し
水量測定箇所に照射するための導光管２版面からの反射
赤外線を半透明鏡に導くための導光管、導光管により導
かれた反射赤外線を２分割するための半透明鏡、半透明
鏡により２分割された反射光の一方に対しては水により
吸収される波長を含む領域の赤外線を透過させるための
フィルターおよび他方に対しては水により吸収されない
波長を含む領域の赤外線を透過させるためのフィルター
、それぞれのフィルターを透過した赤外線に対する１組
のゲルマニウムフォトダイオードを素子とする検出器を
含む平版印刷機版面の湿し水量測定装置である。"Structure of the Invention" (Means for Solving the Problems) Namely, the present invention irradiates infrared rays emitted from a light source onto the plate surface of a lithographic printing machine, and uses the infrared rays reflected from the non-printing area to dampen the plate surface. In a method of measuring the amount of dampening water on the surface of a cough plate by detecting the amount of attenuation of infrared rays of a specific wavelength absorbed by water, a germanium photodiode is used as an element (sensor) for detecting the amount of attenuation of the infrared rays. This is a method that continuously measures the amount of dampening water per printing plate without chopping infrared rays. In addition, the light source such as a halogen lamp, iodine lamp, tungsten lamp, or xenon lamp, and a light guide tube for irradiating the infrared rays from the light source to the dampening water amount measurement point on the plate surface of the lithographic printing machine are translucent to prevent infrared rays reflected from the second plate surface. A light guide tube to guide the reflected infrared light guided by the light guide tube into two parts, a semi-transparent mirror to split the reflected infrared light into two parts, and a wavelength that is absorbed by water for one of the two parts of the reflected light split by the semi-transparent mirror. and a filter for transmitting infrared rays in a region including wavelengths not absorbed by water, and a pair of germanium photodiodes for infrared rays transmitted through each filter. This is a device for measuring the amount of dampening water on the plate surface of a lithographic printing machine, which includes a detector.
本発明において赤外線検出器として用いるゲルマニウム
フォトダイオードは、他の赤外線検出器例えばＰｂＳ、
Ｐｂ５ｅ等のように、赤外線をチョッピングさせる必
要がなく、入射される赤外線を連続的に測定できるとい
う利点をもつ。従って、平版印刷機の版胴−回転分の湿
し水量をとぎれることなしに、連続的に測定でき、また
測定ヘッドを版の横方向に走査させることにより２版の
回転方向および横方向とも走査させることができ、ひい
ては該版全面の湿し水量の分布を測定することも可能と
なる。The germanium photodiode used as an infrared detector in the present invention can be used with other infrared detectors such as PbS,
Unlike Pb5e, etc., there is no need to chop the infrared rays, and there is an advantage that the incident infrared rays can be continuously measured. Therefore, the amount of dampening water corresponding to the rotation of the plate cylinder of a lithographic printing machine can be measured continuously without interruption, and by scanning the measurement head in the lateral direction of the plate, the second plate can be scanned in both the rotational direction and the lateral direction. It also becomes possible to measure the distribution of the amount of dampening water over the entire surface of the plate.
本発明に係わる導光管としては光学繊維、金属管等が用
いられるが、光学繊維が好ましく、導光管として光学繊
維（光ファイバー）を用いることの目的は測定ヘッドと
ランプ部を光学繊維で接続することにより、測定ヘッド
をなるべく小さくシ、印刷機に取り付は易くする点にあ
るが、さらには２本以上の複数の光学繊維を用い、また
複数の赤外線検出器を用いることにより、同時に同一版
面の複数箇所の湿し水量を測定することも可能となる。Optical fibers, metal tubes, etc. are used as the light guide tube according to the present invention, but optical fibers are preferable, and the purpose of using an optical fiber (optical fiber) as the light guide tube is to connect the measuring head and the lamp part with the optical fiber. By doing this, the measuring head can be made as small as possible, making it easy to install it on the printing machine. Furthermore, by using two or more multiple optical fibers and multiple infrared detectors, it is possible to simultaneously measure the same It is also possible to measure the amount of dampening water at multiple locations on the printing plate.
また、印刷機の既に公知となっている種々の湿し水量の
分割供給調節機構の各分割領域に対応する版面上の各領
域の湿し水量を絶えず測定してこれ等各測定データを該
関節機構にフィードバックして該関節機構の各分割領域
毎に湿し水量供給量を絶えず調節し１版面上の各領域に
供給される湿し水量を常に適正量に制御することもでき
る。In addition, the amount of dampening water in each area on the printing plate corresponding to each divided area of the already known various dampening water amount divided supply adjustment mechanisms of the printing press is constantly measured and these measurement data are transmitted to the joints. It is also possible to feed back to the mechanism and constantly adjust the supply amount of dampening water for each divided region of the joint mechanism, so that the amount of dampening water supplied to each region on one printing surface can always be controlled to an appropriate amount.
また１本発明で用いる光学繊維としては赤外線の透過性
が良好な石英繊維が適しているが５石英以外の素材でも
測定感度、精度に影響を及ぼさないものであれば、特に
制限されるものではない。In addition, 1. As the optical fiber used in the present invention, quartz fiber with good infrared transmittance is suitable, but 5. Materials other than quartz are not particularly limited as long as they do not affect measurement sensitivity and accuracy. do not have.
以下図面に従って本発明の詳細な説明する。第１図は本
発明の一実施態様を示す装置の概略を示す。第１図にお
いて、ハロゲンランプ（１）により放射された光線は、
レンズ（２）で集光された後、光学繊維（３）によって
版面（４）に導かれる。なお、レンズ（２）の代わりに
集光鏡を用いてもよい。The present invention will be described in detail below with reference to the drawings. FIG. 1 schematically shows an apparatus illustrating one embodiment of the present invention. In Figure 1, the light beam emitted by the halogen lamp (1) is
After the light is focused by the lens (2), it is guided to the printing plate (4) by the optical fiber (3). Note that a condensing mirror may be used instead of the lens (2).
版面よりの反射光線は、光学繊維（３）によって赤外線
検出部の半透明鏡（５）に導かれる。該反射光線は半透
明鏡（５）によって２方に分けられ、各々、２種類の干
渉フィルター（６）、 （７）を経て赤外線検出器（
８）、 （９）に到達する。なお、干渉フィルター（
６）、 （７）としては通常０．１μ程度の波長中で
光線を透過させることができ１条件によって異なるが２
例えば干渉フィルターが、水によって吸収される波長と
して１．４６μの領域を含む赤外線を透過させるものと
水によって吸収されない波長として１．３μの領域を含
む赤外線を透過させるものが用いられる。尚、ランプ（
１）およびレンズ（２）は、湿し水量測定装置へ・ノド
（１０）に含めても良いが導光管として光学繊維（３）
を用いることにより、該測定装置ヘッド（１０）に含め
ず、ヘッド（１０）をコンパクトにして印刷機に取り付
は易くすることも可能となる。The reflected light from the printing plate is guided by an optical fiber (3) to a semi-transparent mirror (5) of an infrared detection section. The reflected light beam is divided into two parts by a semi-transparent mirror (5), and each passes through two types of interference filters (6) and (7), and is then sent to an infrared detector (
8), (9) is reached. In addition, the interference filter (
6), (7) can normally transmit light within a wavelength of about 0.1 μ, and varies depending on the conditions, but 2
For example, the interference filter used is one that transmits infrared rays that include a wavelength range of 1.46μ that is absorbed by water, and one that transmits infrared rays that include a wavelength range of 1.3μ that is not absorbed by water. In addition, the lamp (
1) and the lens (2) may be included in the throat (10) to the dampening water amount measuring device, but the optical fiber (3) can be used as a light guide.
By using the head (10), it is possible to make the head (10) compact and easily attach it to a printing machine without including it in the measuring device head (10).
第２図は２個の赤外線検出器で得られた２種の赤外線の
強度を電圧量または電流量の差として検出する為の本発
明の湿し水量測定装置を用いる上での電気回路の一例を
示した概略のブロックダイヤグラムである。赤外線検出
器（８）、 （９）から得られた電気信号は、増幅回
路（１１） 、 （１２）により増幅され、各々対数
回路（１３）に入り、該回路で２種の信号の差分が出力
され、該出力は９表示機（１４）に表示される。またこ
の時必要に応じて同時にペン書きレコーダー（１５）で
記録される。Figure 2 is an example of an electric circuit when using the dampening water amount measuring device of the present invention for detecting the intensity of two types of infrared rays obtained by two infrared detectors as a difference in voltage or current amount. This is a schematic block diagram showing the following. The electrical signals obtained from the infrared detectors (8) and (9) are amplified by amplifier circuits (11) and (12), and each enters a logarithmic circuit (13), where the difference between the two signals is calculated. The output is displayed on the 9 display (14). At this time, if necessary, the pen-writing recorder (15) records the writing at the same time.
第３図は、２個の赤外線検出器で得られた２種の赤外線
の強度を電圧量または電流量の差として検出する為の本
発明の湿し水量測定装置を用いる上で。FIG. 3 shows the use of the dampening water amount measuring device of the present invention for detecting the intensities of two types of infrared rays obtained by two infrared detectors as a difference in the amount of voltage or amount of current.
湿し水量測定をあるブロック毎に区切って、そのプ。Divide the dampening water amount measurement into blocks and print them.
ロック毎の湿し水量の最大値または平均値を測定するた
めの電気回路の一例を示した概略のブロックダイヤグラ
ムである。版胴（１６）よりトリガー信号発生器（１７
）でトリガー信号を取り出し、該信号は、タイミングロ
ジック回路（１８）に入り、該回路では、まず、サンプ
リング信号を発生してピークホールド回路（１９）、
（２０）をリセットした後に、赤外線検出器（８）、
（９）の各々に入射した赤外線強度を電位信号に変
換し、該電気信号は増幅回路（１１） 、 （１２）
により増幅されリセットされているピークホールド回路
（１９）、 （２０）に至り、該回路で最大信号がホ
ールドされ、該最大信 ４゜号は各々対数回路（１３）
に入り、該回路で２種の最大信号の差分が出力され、該
出力は表示機（１４）に表示される。またこの時必要に
応じて同時にペン書きレコーダー（１５）で記録される
。これらの一連の動作は３版胴（１Ｇ）よりトリガー信
号を取り出すトリガー信号発生器（１７）のタンミング
次第で任意の間隔のブロックで行うことができる。2 is a schematic block diagram showing an example of an electric circuit for measuring the maximum value or average value of the amount of dampening water for each lock. The trigger signal generator (17) is connected to the plate cylinder (16).
), the trigger signal enters the timing logic circuit (18), which first generates a sampling signal and sends it to the peak hold circuit (19),
After resetting (20), the infrared detector (8),
The infrared intensity incident on each of (9) is converted into a potential signal, and the electric signal is transmitted to the amplifier circuit (11), (12).
The peak hold circuits (19) and (20) are amplified and reset by the circuits, and the maximum signal is held in these circuits.
The circuit outputs the difference between the two maximum signals, and the output is displayed on the display (14). At this time, if necessary, the pen-writing recorder (15) records the writing at the same time. These series of operations can be performed in blocks at arbitrary intervals depending on the timing of the trigger signal generator (17) which extracts the trigger signal from the third plate cylinder (1G).
第４図は本発明に係わる版面上の湿し水量測定装置を、
平版オフセント印刷機械に取り付けた様子を図示したも
のであり１版胴に対する測定位置は２本図に示した位置
が好ましいが、特にその位置を制限するものではない。Figure 4 shows a device for measuring the amount of dampening water on a printing plate according to the present invention.
This figure shows how it is installed in a lithographic offset printing machine, and the measurement position relative to the first plate cylinder is preferably the two positions shown in the figure, but the position is not particularly limited.
湿し水は水舟（２１）より水元ロール（２２）、呼び出
しロール（２３）および版胴（１６）に取り付けた版面
に湿し水を供給する為のローラ群（２４）、 （２５
）、 （２６）を経て版面に供給される。湿し水量測
定装置（２７）は湿し水を供給された直後の版面の湿し
水量を測定する。The dampening water is supplied from the water boat (21) to the water base roll (22), the calling roll (23), and the roller group (24), (25) for supplying dampening water to the plate surface attached to the plate cylinder (16).
), (26) and then supplied to the printing plate. The dampening water amount measuring device (27) measures the amount of dampening water on the printing plate immediately after being supplied with dampening water.
版面ばさらにインキ着はロール群（２Ｂ）、 （２９
）、 （３０）、 （３１）によりインキを供給さ
れるIn addition to the printing plate, the ink is deposited on the roll group (2B), (29
), (30), (31) are supplied with ink.
第１図は本発明に係わる平版印刷機の版面上の湿し水量
測定装置の一実施態様を示す断面図であり。
第２図は同じく本発明に係わる平版印刷機の版面上の湿
し水量測定装置の電位回路部のブロックダイヤグラムの
一例である。第３図は本発明に係わる平版印刷機の版面
上の湿し水量測定装置において、該版面をブロック毎に
区切って測定する場合の電気回路部のブロックダイヤグ
ラムの一例であり、第４図は本発明に係わる版面上の湿
し水量測定装置の印刷機械への取り付は部位の一例を図
示した断面図である図面における主な符合は。
１・・・ランプ。
２・・・レンズ。
３・・・光学繊維。
４・・・版面。
５・・・半透明鏡。
６．７・・・干渉フィルター。
８．９・・・赤外線検出器。
１０・・・湿し水量測定装置ヘッド。
１１．１２・・・増幅回路。
１３・・・対数回路。
１４・・・表示機。
１５・・・ペン書きレコーダー。
１６・・・版胴。
１７・・・トリガー信号発生器。
１８・・・タイミングロジック回路。
１９．２０・・・ピークホールド回路。
２１・・・水舟。
２２・・・水元ロール。
２３・・・呼び出しロール。
２４．２５．２６・・・版面に湿し水を供給する為のロ
ーラ群。
２７・・・湿し水量測定装置。
２８．２９，３０．３１・・・インキ着はロール群。
を示す。FIG. 1 is a sectional view showing an embodiment of a device for measuring the amount of dampening water on a plate surface of a lithographic printing press according to the present invention. FIG. 2 is an example of a block diagram of a potential circuit portion of a device for measuring the amount of dampening water on a plate surface of a lithographic printing press according to the present invention. FIG. 3 is an example of a block diagram of the electric circuit section in the device for measuring the amount of dampening water on the printing plate of a lithographic printing press according to the present invention, when the printing plate is divided into blocks and measured. The main reference numerals in the drawing, which is a sectional view showing an example of the installation of the device for measuring the amount of dampening water on a printing plate according to the invention to a printing machine, are as follows. 1...Lamp. 2...Lens. 3...Optical fiber. 4...Hanmen. 5...Semi-transparent mirror. 6.7...Interference filter. 8.9...Infrared detector. 10... Dampening water amount measuring device head. 11.12...Amplification circuit. 13... Logarithmic circuit. 14...Display device. 15...Pen writing recorder. 16...Print cylinder. 17...Trigger signal generator. 18...Timing logic circuit. 19.20...Peak hold circuit. 21... Mizifune. 22... Mizumoto roll. 23... Call roll. 24.25.26...Roller group for supplying dampening water to the printing plate. 27... Dampening water amount measuring device. 28.29, 30.31...Ink deposited on roll group. shows.
Claims (1)
し、該版面から反射された赤外線により、湿し水によっ
て吸収を受けた特定の波長の赤外線の減衰量を検出して
該版面の湿し水量を測定する方法において、赤外線の減
衰量を検出するセンサーとしてゲルマニウムフォトダイ
オードを用いることにより、赤外線をチョッピングさせ
ず、版面の湿し水量を測定することを特徴とする平版印
刷機版面の湿し水量測定方法。 ２、赤外線の光源、該光源から放射される赤外線を平版
印刷機版面の湿し水量測定箇所に照射するための導光管
、版面からの反射赤外線を半透明鏡に導くための導光管
、導光管により導かれた反射赤外線を２分割するための
半透明鏡、該半透明鏡により２分割された反射赤外線の
一方に対しては水により吸収される波長を含む領域の赤
外線を透過されるためのフィルターおよび他方に対して
は水により吸収されない波長を含む領域の赤外線を透過
させるためのフィルター、それぞれのフィルターを透過
した赤外線に対する１組のゲルマニウムフォトダイオー
ドをセンサーとする検出器を含むことを特徴とする平版
印刷機版面の湿し水量測定装置。 ３、導光管として光学繊維を用いる特許請求の範囲第２
項記載の平版印刷機版面の湿し水量測定装置。[Claims] 1. Infrared rays emitted from a light source are irradiated onto the plate surface of a lithographic printing machine, and the amount of attenuation of infrared rays of a specific wavelength absorbed by dampening water is detected from the infrared rays reflected from the plate surface. The method for measuring the amount of dampening water on the printing plate is characterized in that the amount of dampening water on the printing plate is measured without chopping the infrared rays by using a germanium photodiode as a sensor for detecting the amount of attenuation of infrared rays. Method for measuring the amount of dampening water on the plate surface of a lithographic printing machine. 2. An infrared light source, a light guide tube for irradiating the infrared rays emitted from the light source to the dampening water amount measurement location on the plate surface of the lithographic printing machine, a light guide tube for guiding the reflected infrared rays from the plate surface to the semi-transparent mirror; A semi-transparent mirror for dividing the reflected infrared rays guided by the light guide tube into two, and for one of the two reflected infrared rays divided by the semi-transparent mirror, infrared rays in a region including wavelengths absorbed by water are transmitted. and a filter for transmitting infrared rays in a range including wavelengths not absorbed by water, and a detector having a pair of germanium photodiodes as sensors for infrared rays transmitted through each filter. A device for measuring the amount of dampening water on the plate surface of a lithographic printing press. 3. Claim 2 in which an optical fiber is used as a light guide
A device for measuring the amount of dampening water on the plate surface of a lithographic printing machine as described in 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60163942A JPS6225238A (en) | 1985-07-26 | 1985-07-26 | Method and instrument for measuring amount of damping water for plate surface of lithographic printing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60163942A JPS6225238A (en) | 1985-07-26 | 1985-07-26 | Method and instrument for measuring amount of damping water for plate surface of lithographic printing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6225238A true JPS6225238A (en) | 1987-02-03 |
Family
ID=15783747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60163942A Pending JPS6225238A (en) | 1985-07-26 | 1985-07-26 | Method and instrument for measuring amount of damping water for plate surface of lithographic printing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6225238A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03199942A (en) * | 1989-12-27 | 1991-08-30 | Chino Corp | Coating-amount measuring apparatus |
| US5708278A (en) * | 1996-05-13 | 1998-01-13 | Johnson & Johnson Clinical Diagnostics, Inc. | Reflective wetness detector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5290982A (en) * | 1976-01-26 | 1977-07-30 | Hokushin Electric Works | Two color moisture meter |
| JPS567041A (en) * | 1979-06-29 | 1981-01-24 | Leo Giken:Kk | Road-surface moisture sensor |
| JPS568529A (en) * | 1979-06-28 | 1981-01-28 | Ti Fords Ltd | Method and device for detecting aqueous liquid in bottle |
| JPS58148941A (en) * | 1982-02-27 | 1983-09-05 | Dainippon Ink & Chem Inc | Detector for amount and controller for supply amount of dampening water for plate surface of offset printer |
-
1985
- 1985-07-26 JP JP60163942A patent/JPS6225238A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5290982A (en) * | 1976-01-26 | 1977-07-30 | Hokushin Electric Works | Two color moisture meter |
| JPS568529A (en) * | 1979-06-28 | 1981-01-28 | Ti Fords Ltd | Method and device for detecting aqueous liquid in bottle |
| JPS567041A (en) * | 1979-06-29 | 1981-01-24 | Leo Giken:Kk | Road-surface moisture sensor |
| JPS58148941A (en) * | 1982-02-27 | 1983-09-05 | Dainippon Ink & Chem Inc | Detector for amount and controller for supply amount of dampening water for plate surface of offset printer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03199942A (en) * | 1989-12-27 | 1991-08-30 | Chino Corp | Coating-amount measuring apparatus |
| US5708278A (en) * | 1996-05-13 | 1998-01-13 | Johnson & Johnson Clinical Diagnostics, Inc. | Reflective wetness detector |
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