JPH0890760A - Method and apparatus for controlling thickness of ink film - Google Patents
Method and apparatus for controlling thickness of ink filmInfo
- Publication number
- JPH0890760A JPH0890760A JP6235084A JP23508494A JPH0890760A JP H0890760 A JPH0890760 A JP H0890760A JP 6235084 A JP6235084 A JP 6235084A JP 23508494 A JP23508494 A JP 23508494A JP H0890760 A JPH0890760 A JP H0890760A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- roller
- film thickness
- ink film
- plate cylinder
- 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.)
- Withdrawn
Links
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、印刷機のローラ群のイ
ンキ膜厚を制御してインキの上流側から下流側への移動
速度を増減させるインキ膜厚制御方法及び装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink film thickness control method and device for controlling the ink film thickness of a roller group of a printing press to increase or decrease the speed of movement of ink from the upstream side to the downstream side.
【０００２】[0002]
【従来の技術】印刷機で常に一定濃度の印刷品質を保持
するためには、インキ供給口から版胴までの間に多数の
ローラを介在させて、インキ膜厚を均一化する必要があ
る。図６は、従来の印刷機のローラの配列状態を示して
いる。１がインキ、２がインキキー、１３が複数の銅ロ
ーラ、１４が複数のゴムローラで、これらのローラ１
３、１４がインキキー２と版胴との間に配設されてお
り、インキキー２によるギャップ調整により、銅ローラ
（Ａ）１３に所定膜厚（〜１００μｍ）のインキ層が形
成される。2. Description of the Related Art In order to always maintain a constant density of printing quality in a printing machine, it is necessary to interpose a large number of rollers between the ink supply port and the plate cylinder to make the ink film thickness uniform. FIG. 6 shows an arrangement state of rollers of a conventional printing machine. 1 is an ink, 2 is an ink key, 13 is a plurality of copper rollers, and 14 is a plurality of rubber rollers.
3 and 14 are arranged between the ink key 2 and the plate cylinder, and an ink layer having a predetermined film thickness (up to 100 μm) is formed on the copper roller (A) 13 by adjusting the gap by the ink key 2.
【０００３】呼び出しローラ（Ｂ）１４は、銅ローラ
（Ａ）１３と銅ローラ（Ｃ1 ）１３との間を往復動し
て、銅ローラ（Ｃ1 ）１３にインキを間欠的に供給す
る。その後は、銅ローラ１３とゴムローラ１４とが交互
に並んだローラ群により均一化されて、５μｍ程度のイ
ンキ膜が形成され、またこの均一化されたインキが銅ロ
ーラ（Ｗ）１４、銅ローラ（Ｘ）１４、銅ローラ（Ｙ）
１４、銅ローラ（Ｚ）１４により版胴に供給されて、版
胴の画線部にインキ膜が形成される。The calling roller (B) 14 reciprocates between the copper roller (A) 13 and the copper roller (C 1 ) 13 to intermittently supply ink to the copper roller (C 1 ) 13. After that, the copper roller 13 and the rubber roller 14 are made uniform by a group of rollers alternately arranged to form an ink film of about 5 μm, and the uniformized ink forms the copper roller (W) 14 and the copper roller ( X) 14, copper roller (Y)
14, a copper roller (Z) 14 supplies the ink to the plate cylinder to form an ink film on the image area of the plate cylinder.
【０００４】一方、版胴には、湿し水１５がローラ（Ｄ
Ｔ）１４とクロームメッキローラ（ＤＲ）と銅ローラ
（ＤＤ）１４とを経て供給されて、版胴の親水性の非画
線部に水膜が形成される。On the other hand, dampening water 15 is applied to the roller (D
T) 14, a chrome-plating roller (DR), and a copper roller (DD) 14 to form a water film on the hydrophilic non-image area of the plate cylinder.
【０００５】[0005]
【発明が解決しようとする課題】前記図６に示す印刷機
には、次の問題があった。即ち、版胴では画線率の大き
い所と小さい所とでインキの消費量が異なるので、画線
率に応じてインキ供給量をインキ供給部のインキキー２
で調節して、ローラ軸方向のインキ膜厚を制御してい
る。実際にはさらに印刷を行って常に最適画像が得られ
るようにローラ軸方向のインキ膜厚を制御している。The printing machine shown in FIG. 6 has the following problems. That is, in the plate cylinder, the ink consumption differs depending on the area where the image area is large and the area where the image area is small.
Is adjusted to control the ink film thickness in the roller axis direction. In practice, further printing is performed to control the ink film thickness in the roller axis direction so that the optimum image can always be obtained.
【０００６】ところがインキ供給系のローラ群のうち、
接触したローラは、矢印方向に回転しており、ローラの
接触部が矢印方向に離れる際、インキが両ローラに均等
に配分されるので、インキ供給口から版胴までインキが
移動する速度は非常に遅くて、インキ供給量をインキ供
給部のインキキー２で調節しても、それが画像に反映さ
れるまでに時間がかかるし、最適画像を得るまでにイン
キキー２の調節を何度も行うので、その間に膨大な量の
損紙が発生する。However, among the rollers of the ink supply system,
The contacting roller rotates in the direction of the arrow, and when the contact part of the roller separates in the direction of the arrow, the ink is evenly distributed to both rollers, so the speed at which the ink moves from the ink supply port to the plate cylinder is extremely high. It is too late, and even if the ink supply amount is adjusted with the ink key 2 of the ink supply unit, it takes time until it is reflected in the image, and the ink key 2 is adjusted many times until the optimum image is obtained. In the meantime, a huge amount of waste paper is generated.
【０００７】またインキキー２で調節したインキ膜厚
は、多数のローラを経由している間に均され、版胴に達
したときには、膜厚変化が小さくなってしまうので、最
適画像を得るためのキー調整には、高い熟練度が要求さ
れるという問題があった。本発明は前記の問題点に鑑み
提案するものであり、その目的とする処は、最適画像
の調整を短時間で行うことができて、損紙を大幅に低減
でき、最適画像の調整を熟練度を必要とせずに容易に
行うことができるインキ膜厚制御方法及び装置を提供し
ようとする点にある。Further, the ink film thickness adjusted by the ink key 2 is smoothed while passing through a large number of rollers, and when reaching the plate cylinder, the film thickness change becomes small, so that an optimum image is obtained. There was a problem that a high degree of skill was required for key adjustment. The present invention is proposed in view of the above problems, and an object of the present invention is to adjust an optimum image in a short time, to significantly reduce wasted paper, and to adjust an optimum image with skill. It is an object of the present invention to provide an ink film thickness control method and apparatus that can be easily performed without requiring a certain degree.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明のインキ膜厚制御方法は、インキキー、イ
ンキノズル等のインキ供給手段から複数の相接するロー
ラ群を経て版胴にインキを供給するときに、上記ローラ
群の少なくとも１つの導体ローラ上のインキ膜を帯電さ
せて、帯電電位及び極性によりインキ膜厚を制御するこ
とを特徴としている（請求項１）。In order to achieve the above object, the method for controlling the ink film thickness of the present invention is such that an ink supply means such as an ink key, an ink nozzle or the like is applied to a plate cylinder through a plurality of contacting roller groups. When the ink is supplied, the ink film on at least one conductor roller of the roller group is charged, and the ink film thickness is controlled by the charging potential and the polarity (claim 1).
【０００９】また本発明のインキ膜厚制御装置は、イン
キキー、インキノズル等のインキ供給手段と版胴との間
に複数の相接するローラ群を配設したインキ供給装置に
おいて、前記ローラ群中の導体ローラの表面近傍にコロ
ナ帯電器を設けている（請求項２）。前記インキ膜厚制
御装置において、導体ローラとインキの流れ方向上流側
のローラとが接する部分の上流側に正のコロナ帯電器を
設けてもよい（請求項３）。The ink film thickness control device of the present invention is an ink supply device in which a plurality of roller groups that are in contact with each other are arranged between an ink supply means such as an ink key and an ink nozzle and a plate cylinder. A corona charger is provided in the vicinity of the surface of the conductor roller. In the ink film thickness control device, a positive corona charger may be provided on the upstream side of the portion where the conductor roller and the roller on the upstream side in the ink flow direction are in contact with each other (claim 3).
【００１０】前記インキ膜厚制御装置において、導体ロ
ーラとインキの流れ方向上流側のローラとが接する部分
の上流側に正のコロナ帯電器を設け、導体ローラとイン
キ流れ方向下流側のローラとが接する部分の上流側に負
のコロナ帯電器を設けてもよい（請求項４）。また本発
明のインキ膜厚制御装置は、インキキー、インキノズル
等のインキ供給手段と版胴との間に複数の相接するロー
ラ群を配設したインキ供給装置において、ローラ群中の
導体ローラの幅方向に独立して帯電電位の制御可能な複
数個のコロナ帯電器を並設している（請求項５）。In the ink film thickness control device, a positive corona charger is provided on the upstream side of the portion where the conductor roller and the roller on the upstream side in the ink flow direction contact each other, and the conductor roller and the roller on the downstream side in the ink flow direction are provided. A negative corona charger may be provided on the upstream side of the contacting portion (claim 4). Further, the ink film thickness control device of the present invention is an ink supply device in which a plurality of contacting roller groups are arranged between an ink supply means such as an ink key and an ink nozzle and a plate cylinder. A plurality of corona chargers whose charge potentials can be controlled independently in the width direction are arranged in parallel (claim 5).
【００１１】[0011]
【作用】本発明は前記のように構成されており、インキ
キー、インキノズル等のインキ供給手段から複数の相接
するローラ群を経て版胴にインキを供給するときに、上
記ローラ群の少なくとも１つの導体ローラ上のインキ膜
を帯電させて、帯電電位及び極性によりインキ膜厚を制
御する。The present invention is configured as described above, and when ink is supplied to the plate cylinder from the ink supply means such as an ink key and an ink nozzle through a plurality of roller groups that are in contact with each other, at least one of the roller groups is The ink film on one conductor roller is charged, and the ink film thickness is controlled by the charging potential and polarity.
【００１２】[0012]
（第１実施例）次に本発明のインキ膜厚制御方法の実施
に使用するインキ膜厚制御装置の第１実施例を図１によ
り説明すると、１がインキ、２がインキキー、１３が複
数の銅ローラ、１４が複数のゴムローラで、これらのロ
ーラ１３、１４がインキキー２と版胴との間に配設され
ており、インキキー２によるギャップ調整により、銅ロ
ーラ（Ａ）１３に所定膜厚（〜１００μｍ）のインキ層
が形成される。(First Embodiment) Next, a first embodiment of the ink film thickness control device used for carrying out the ink film thickness control method of the present invention will be described with reference to FIG. 1. 1 is ink, 2 is ink key, and 13 is plural. Copper rollers, 14 are a plurality of rubber rollers, and these rollers 13, 14 are arranged between the ink key 2 and the plate cylinder. By adjusting the gap by the ink key 2, the copper roller (A) 13 has a predetermined film thickness ( ~ 100 μm) ink layer is formed.
【００１３】呼び出しローラ（Ｂ）１４は、銅ローラ
（Ａ）１３と銅ローラ（Ｃ1 ）１３との間を往復動し
て、銅ローラ（Ｃ1 ）１３にインキを間欠的に供給す
る。その後は、銅ローラ１３とゴムローラ１４とが交互
に並んだローラ群により均一化されて、５μｍ程度のイ
ンキ膜が形成され、またこの均一化されたインキが銅ロ
ーラ（Ｗ）１４、銅ローラ（Ｘ）１４、銅ローラ（Ｙ）
１４、銅ローラ（Ｚ）１４により版胴に供給されて、版
胴の画線部にインキ膜が形成される。The calling roller (B) 14 reciprocates between the copper roller (A) 13 and the copper roller (C 1 ) 13 to intermittently supply ink to the copper roller (C 1 ) 13. After that, the copper roller 13 and the rubber roller 14 are made uniform by a group of rollers alternately arranged to form an ink film of about 5 μm, and the uniformized ink forms the copper roller (W) 14 and the copper roller ( X) 14, copper roller (Y)
14, a copper roller (Z) 14 supplies the ink to the plate cylinder to form an ink film on the image area of the plate cylinder.
【００１４】一方、版胴には、湿し水１５がローラ（Ｄ
Ｔ）１４とクロームメッキローラ（ＤＲ）と銅ローラ
（ＤＤ）１４とを経て供給されて、版胴の親水性の非画
線部に水膜が形成される。１１が複数の正コロナ帯電
器、１２が複数の負コロナ帯電器で、各正コロナ帯電器
１１は、銅ローラ（Ｃ2 ）１３と銅ローラ（Ｋ2 ）１３
と銅ローラ（ＤＢ）１３とがインキ流れ方向上流側のゴ
ムローラ１４に接触する前の位置近傍に設けられ、負コ
ロナ帯電器１２は、銅ローラ（Ｃ2 ）１３と銅ローラ
（Ｊ）１３と銅ローラ（Ｋ1 ）１３とがインキ流れ方向
下流側のゴムローラ１４に接触する前の位置近傍に設け
られており、各正コロナ帯電器１１には、正の高電圧を
印加し、各負コロナ帯電器１２には、負の高電圧を印加
する。なお銅ローラ１３の全てはアースに落ちている。On the other hand, the fountain solution 15 is applied to the roller (D
T) 14, a chrome-plating roller (DR), and a copper roller (DD) 14 to form a water film on the hydrophilic non-image area of the plate cylinder. 11 is a plurality of positive corona chargers, 12 is a plurality of negative corona chargers, and each positive corona charger 11 has a copper roller (C 2 ) 13 and a copper roller (K 2 ) 13
And the copper roller (DB) 13 are provided in the vicinity of the position before contacting the rubber roller 14 on the upstream side in the ink flow direction, and the negative corona charger 12 includes the copper roller (C 2 ) 13 and the copper roller (J) 13. A copper roller (K 1 ) 13 is provided in the vicinity of a position before contacting the rubber roller 14 on the downstream side in the ink flow direction, and a positive high voltage is applied to each positive corona charger 11 to apply each negative corona charger. A high negative voltage is applied to the charger 12. All of the copper rollers 13 are grounded.
【００１５】次に前記図１に示すインキ膜厚制御装置の
作用を説明する。ある実験の過程で印刷インキに正コロ
ナ帯電を施すと、インキ膜厚が増大し、負コロナ帯電を
施すと、インキ膜厚が減少するという現象を見出した。
図４は、生インキ（藍色）の場合のインキ膜厚とコロナ
帯電電圧との関係を示している。実験には、図５に示す
インキ転移装置を用いて、コロトロンで帯電し、インキ
膜厚を赤外方式含水率膜厚計により測定した。Next, the operation of the ink film thickness control device shown in FIG. 1 will be described. In the course of a certain experiment, we found that when the printing ink was subjected to positive corona charging, the ink film thickness increased, and when negative corona charging was applied, the ink film thickness decreased.
FIG. 4 shows the relationship between the ink film thickness and the corona charging voltage in the case of raw ink (indigo). In the experiment, the ink transfer device shown in FIG. 5 was used, charged with a corotron, and the ink film thickness was measured by an infrared moisture content film thickness meter.
【００１６】帯電を施さない場合に比べて正帯電を施し
た場合には、膜厚が２倍程度に達し、負帯電を施した場
合には、８割程度に減少している。これは、ローラの接
触部が図１の矢印方向に離れる際、両ローラに配分され
るインキ量の割合が変化していることに起因しており、
このことを実験により突き止めた。本発明は、この現象
をインキの転移率制御に利用するものである。即ち、正
コロナ帯電電圧を＋８．５ＫＶにし、負コロナ帯電電圧
を−８ＫＶにした。また紙送り速度を３．３ｍ／ｓに設
定して、実験を行ったところ、次の結果を得られた。The film thickness reaches about twice when positively charged and 80% when negatively charged as compared with the case where no charging is applied. This is because the ratio of the amount of ink distributed to both rollers changes when the contact portion of the rollers separates in the direction of the arrow in FIG.
This was determined by experiments. The present invention utilizes this phenomenon for controlling the ink transfer rate. That is, the positive corona charging voltage was set to +8.5 KV and the negative corona charging voltage was set to -8 KV. Further, when the experiment was conducted with the paper feed speed set to 3.3 m / s, the following results were obtained.
【００１７】インキの移動速度は、定常運転時、インキ
供給部のギャップとインキキーとにより変化させ、それ
がどの位の時間で印刷物の濃度変化として現れるかで評
価した。具体的には、版に全面均一の５０％網点のもの
を使用し、初期状態で全てのインキキーのギャップを１
００μｍに設定しておき、或る瞬間、中央部の２つのイ
ンキキーのギャップを１８０μｍに増大させ、その瞬間
から印刷物に濃度変化が現れるまでの損紙枚数で評価し
た。The moving speed of the ink was changed by the gap of the ink supply section and the ink key during the steady operation, and it was evaluated by how long it appeared as a change in the density of the printed matter. Specifically, use a plate with 50% halftone dots that is uniform over the entire surface, and set all ink key gaps to 1 in the initial state.
The gap between the two ink keys in the central portion was increased to 180 μm at a certain moment, and the number of lost sheets from that moment until the density change appeared was evaluated.
【００１８】この結果、コロナ帯電を施さない場合に
は、１６０枚の損紙があったのに対して正コロナ帯電及
び負コロナ帯電を施した場合には、８５枚と明らかにイ
ンキ移動速度の増大がみられた。また負コロナ帯電を施
さないで、正コロナ帯電のみを施して実験を行ったが、
このときは、損紙が１０５枚で、この場合にも、充分に
インキ移動速度の増大効果がみられた。As a result, when corona charging was not performed, there was 160 sheets of damaged paper, whereas when positive corona charging and negative corona charging were performed, it was 85 sheets, which is clearly the ink transfer speed. There was an increase. In addition, the experiment was carried out by applying only the positive corona charge without applying the negative corona charge.
At this time, 105 broke sheets were obtained, and even in this case, the effect of sufficiently increasing the ink moving speed was observed.
【００１９】（第２実施例）次に本発明のインキ膜厚制
御方法の実施に使用するインキ膜厚制御装置の第２実施
例を図２、図３により説明すると、このインキ膜厚制御
装置は、インキ供給部のインキキーの代わりにコロナ帯
電によりローラ軸方向のインキ膜厚を制御するものであ
る。(Second Embodiment) Next, a second embodiment of the ink film thickness control device used for carrying out the ink film thickness control method of the present invention will be described with reference to FIGS. 2 and 3. Is for controlling the ink film thickness in the roller axis direction by corona charging instead of the ink key in the ink supply section.
【００２０】この実施例では、版胴に近い銅ローラ（Ｋ
2 ）１３の近くに図３に示すように３５ｍｍの長さが小
さな２６個のコロナ帯電器１１を軸方向に千鳥状に配設
している。各コロナ帯電器１１に１つの高圧電源を割り
当てるのが、本来、好ましいが、コストの点を考慮する
と、画線率の近いもの同士を１つのグループにまとめ、
１つのグループに１つの高圧電源を割り当てるのが現実
的である。In this embodiment, a copper roller (K
2 ) As shown in FIG. 3, 26 corona chargers 11 each having a small length of 35 mm are arranged in the zigzag pattern in the axial direction near 13). It is originally preferable to assign one high-voltage power source to each corona charger 11, but in view of cost, those having similar drawing rates are grouped into one group,
It is realistic to allocate one high voltage power supply to one group.
【００２１】実験は、中央部の２つのコロナ帯電器１１
に＋８．５ＫＶの電圧を印加し、それから印刷物の濃度
が変化するまでの損紙枚数で評価した。このとき、全て
のインキキーのギャップ幅を１００μｍに設定した。こ
の結果、損紙枚数が５枚で、非常に高速でインキ膜厚制
御が可能なことが判った。またコロナ帯電電圧を正負様
々に変化させたところ、印刷濃度を或る程度変化させ得
ることが判った。In the experiment, the two corona chargers 11 in the central part were used.
A voltage of +8.5 KV was applied to and the number of damaged sheets before the density of the printed matter changed was evaluated. At this time, the gap widths of all the ink keys were set to 100 μm. As a result, it was found that the ink film thickness can be controlled at a very high speed with the number of damaged sheets being 5. It was also found that the print density can be changed to some extent when the corona charging voltage is changed positively and negatively.
【００２２】なお本発明は前記第１、第２実施例に限定
されない。例えば第１実施例において図示した全ての正
負のコロナ帯電器を設置するのでなく、適当に正負のコ
ロナ帯電器を除去しても差し支えない。特に負のコロナ
帯電の効果はあまり大きくないので、適当に省略しても
差し支えない。また第２実施例においてコロナ帯電器を
設置する位置は、図２に示した銅ローラ（Ｋ2 ）１３の
近傍に限定されるものでなく、アースに落ちた他の銅ロ
ーラの近傍に設置しても差し支えない。The present invention is not limited to the first and second embodiments. For example, instead of installing all the positive and negative corona chargers illustrated in the first embodiment, the positive and negative corona chargers may be appropriately removed. In particular, the effect of negative corona charging is not so great, so it can be omitted as appropriate. Further, in the second embodiment, the position where the corona charger is installed is not limited to the vicinity of the copper roller (K 2 ) 13 shown in FIG. 2, but the corona charger is installed near another copper roller which is grounded. It doesn't matter.
【００２３】[0023]
【発明の効果】本発明は前記のようにインキキー、イン
キノズル等のインキ供給手段から複数の相接するローラ
群を経て版胴にインキを供給するときに、上記ローラ群
の少なくとも１つの導体ローラ上のインキ膜を帯電させ
て、帯電電位及び極性によりインキ膜厚を制御するの
で、最適画像の調整を短時間で行うことができて、損
紙を大幅に低減でき、最適画像の調整を熟練度を必要
とせずに容易に行うことができる。As described above, according to the present invention, when the ink is supplied to the plate cylinder from the ink supply means such as the ink key and the ink nozzle through the plurality of roller groups which are in contact with each other, at least one conductor roller of the roller group is provided. The upper ink film is charged and the ink film thickness is controlled by the charging potential and polarity, so the optimum image can be adjusted in a short time, and waste paper can be greatly reduced. It can be done easily without the need for degrees.
【図１】本発明のインキ膜厚制御方法の実施に使用する
インキ膜厚制御装置の第１実施例を示す側面図である。FIG. 1 is a side view showing a first embodiment of an ink film thickness control device used for carrying out an ink film thickness control method of the present invention.
【図２】同インキ膜厚制御装置の第２実施例を示す側面
図である。FIG. 2 is a side view showing a second embodiment of the ink film thickness control device.
【図３】同第２実施例のコロナ帯電器の配列状態を示す
正面図である。FIG. 3 is a front view showing an array state of corona chargers of the second embodiment.
【図４】インキ膜厚とコロナ帯電電圧との関係を示す説
明図である。FIG. 4 is an explanatory diagram showing a relationship between an ink film thickness and a corona charging voltage.
【図５】実験に使用したインキ転移装置を示す説明図で
ある。FIG. 5 is an explanatory diagram showing an ink transfer device used in an experiment.
【図６】従来の印刷機のローラの配列状態を示す側面図
である。FIG. 6 is a side view showing an arrangement state of rollers of a conventional printing machine.
１ インキ ２ インキキー １１ 正コロナ帯電器 １２ 負コロナ帯電器 １３ 導体ローラ（銅ローラ） １４ ゴムローラ 1 Ink 2 Ink Key 11 Positive Corona Charger 12 Negative Corona Charger 13 Conductor Roller (Copper Roller) 14 Rubber Roller
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年４月１０日[Submission date] April 10, 1995
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００３[Name of item to be corrected] 0003
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００３】呼び出しローラ（Ｂ）１４は、銅ローラ
（Ａ）１３と銅ローラ（Ｃ1 ）１３との間を往復動し
て、銅ローラ（Ｃ1 ）１３にインキを間欠的に供給す
る。その後は、銅ローラ１３とゴムローラ１４とが交互
に並んだローラ群により均一化されて、５μｍ程度のイ
ンキ膜が形成され、またこの均一化されたインキがゴム
ローラ（Ｗ）１４、ゴムローラ（Ｘ）１４、ゴムローラ
（Ｙ）１４、ゴムローラ（Ｚ）１４により版胴に供給さ
れて、版胴の画線部にインキ膜が形成される。The calling roller (B) 14 reciprocates between the copper roller (A) 13 and the copper roller (C 1 ) 13 to intermittently supply ink to the copper roller (C 1 ) 13. After that, the copper roller 13 and the rubber roller 14 are made uniform by a group of rollers alternately arranged to form an ink film of about 5 μm, and the uniformed ink is the rubber roller (W) 14 and the rubber roller (X). 14, the rubber roller (Y) 14, and the rubber roller (Z) 14 supply the ink to the plate cylinder to form an ink film on the image area of the plate cylinder.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００４】一方、版胴には、湿し水１５がローラ（Ｄ
Ｔ）１４とクロームメッキローラ（ＤＲ）とゴムローラ
（ＤＤ）１４とを経て供給されて、版胴の親水性の非画
線部に水膜が形成される。On the other hand, dampening water 15 is applied to the roller (D
T) 14, a chrome-plating roller (DR), and a rubber roller (DD) 14, and a water film is formed on the hydrophilic non-image area of the plate cylinder.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１３】呼び出しローラ（Ｂ）１４は、銅ローラ
（Ａ）１３と銅ローラ（Ｃ1 ）１３との間を往復動し
て、銅ローラ（Ｃ1 ）１３にインキを間欠的に供給す
る。その後は、銅ローラ１３とゴムローラ１４とが交互
に並んだローラ群により均一化されて、５μｍ程度のイ
ンキ膜が形成され、またこの均一化されたインキがゴム
ローラ（Ｗ）１４、ゴムローラ（Ｘ）１４、ゴムローラ
（Ｙ）１４、ゴムローラ（Ｚ）１４により版胴に供給さ
れて、版胴の画線部にインキ膜が形成される。The calling roller (B) 14 reciprocates between the copper roller (A) 13 and the copper roller (C 1 ) 13 to intermittently supply ink to the copper roller (C 1 ) 13. After that, the copper roller 13 and the rubber roller 14 are made uniform by a group of rollers alternately arranged to form an ink film of about 5 μm, and the uniformed ink is the rubber roller (W) 14 and the rubber roller (X). 14, the rubber roller (Y) 14, and the rubber roller (Z) 14 supply the ink to the plate cylinder to form an ink film on the image area of the plate cylinder.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１４】一方、版胴には、湿し水１５がローラ（Ｄ
Ｔ）１４とクロームメッキローラ（ＤＲ）とゴムローラ
（ＤＤ）１４とを経て供給されて、版胴の親水性の非画
線部に水膜が形成される。１１が複数の正コロナ帯電
器、１２が複数の負コロナ帯電器で、各正コロナ帯電器
１１は、銅ローラ（Ｃ2 ）１３と銅ローラ（Ｋ2 ）１３
と銅ローラ（ＤＢ）１３とがインキ流れ方向上流側のゴ
ムローラ１４に接触する前の位置近傍に設けられ、負コ
ロナ帯電器１２は、銅ローラ（Ｃ2 ）１３と銅ローラ
（Ｊ）１３と銅ローラ（Ｋ1 ）１３とがインキ流れ方向
下流側のゴムローラ１４に接触する前の位置近傍に設け
られており、各正コロナ帯電器１１には、正の高電圧を
印加し、各負コロナ帯電器１２には、負の高電圧を印加
する。なお銅ローラ１３の全てはアースに落ちている。On the other hand, the fountain solution 15 is applied to the roller (D
T) 14, a chrome-plating roller (DR), and a rubber roller (DD) 14, and a water film is formed on the hydrophilic non-image area of the plate cylinder. 11 is a plurality of positive corona chargers, 12 is a plurality of negative corona chargers, and each positive corona charger 11 has a copper roller (C 2 ) 13 and a copper roller (K 2 ) 13
And the copper roller (DB) 13 are provided in the vicinity of the position before contacting the rubber roller 14 on the upstream side in the ink flow direction, and the negative corona charger 12 includes the copper roller (C 2 ) 13 and the copper roller (J) 13. A copper roller (K 1 ) 13 is provided in the vicinity of a position before contacting the rubber roller 14 on the downstream side in the ink flow direction, and a positive high voltage is applied to each positive corona charger 11 to apply each negative corona charger. A high negative voltage is applied to the charger 12. All of the copper rollers 13 are grounded.
Claims (5)
給手段から複数の相接するローラ群を経て版胴にインキ
を供給するときに、上記ローラ群の少なくとも１つの導
体ローラ上のインキ膜を帯電させて、帯電電位及び極性
によりインキ膜厚を制御することを特徴としたインキ膜
厚制御方法。1. When ink is supplied from an ink supply means such as an ink key or an ink nozzle to a plate cylinder through a plurality of roller groups which are in contact with each other, an ink film on at least one conductor roller of the roller group is charged. And controlling the ink film thickness by the charging potential and polarity.
給手段と版胴との間に複数の相接するローラ群を配設し
たインキ供給装置において、前記ローラ群中の導体ロー
ラの表面近傍にコロナ帯電器を設けたことを特徴とする
インキ膜厚制御装置。2. An ink supply device in which a plurality of roller groups that are in contact with each other are arranged between an ink supply means such as an ink key and an ink nozzle and a plate cylinder, and corona charging is performed near a surface of a conductor roller in the roller group. An ink film thickness control device characterized by having a container.
側の前記ローラとが接する部分の上流側に正のコロナ帯
電器を設けた請求項２記載のインキ膜厚制御装置。3. The ink film thickness control device according to claim 2, wherein a positive corona charger is provided on the upstream side of a portion where the conductor roller and the roller on the upstream side in the ink flow direction are in contact with each other.
側の前記ローラとが接する部分の上流側に正のコロナ帯
電器を設け、前記導体ローラとインキ流れ方向下流側の
前記ローラとが接する部分の上流側に負のコロナ帯電器
を設けた請求項２、３記載のインキ膜厚制御装置。4. A positive corona charger is provided on the upstream side of a portion where the conductor roller and the roller on the upstream side in the ink flow direction contact each other, and a portion where the conductor roller and the roller on the downstream side in the ink flow direction contact each other. The ink film thickness control device according to claim 2, wherein a negative corona charger is provided on the upstream side of the ink.
給手段と版胴との間に複数の相接するローラ群を配設し
たインキ供給装置において、前記ローラ群中の導体ロー
ラの幅方向に独立して帯電電位の制御可能な複数個のコ
ロナ帯電器を並設したことを特徴とするインキ膜厚制御
装置。5. An ink supply device having a plurality of roller groups that are in contact with each other between an ink supply means such as an ink key and an ink nozzle and a plate cylinder, wherein the conductive rollers in the roller groups are independent in the width direction. The ink film thickness control device is characterized in that a plurality of corona chargers whose charge potential can be controlled are installed in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6235084A JPH0890760A (en) | 1994-09-29 | 1994-09-29 | Method and apparatus for controlling thickness of ink film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6235084A JPH0890760A (en) | 1994-09-29 | 1994-09-29 | Method and apparatus for controlling thickness of ink film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0890760A true JPH0890760A (en) | 1996-04-09 |
Family
ID=16980836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6235084A Withdrawn JPH0890760A (en) | 1994-09-29 | 1994-09-29 | Method and apparatus for controlling thickness of ink film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0890760A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6851363B2 (en) * | 2001-05-23 | 2005-02-08 | Man Roland Druckmaschinen Ag | Short inking unit for a rotary printing machine and method of improving the ink splitting in such a short inking unit |
-
1994
- 1994-09-29 JP JP6235084A patent/JPH0890760A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6851363B2 (en) * | 2001-05-23 | 2005-02-08 | Man Roland Druckmaschinen Ag | Short inking unit for a rotary printing machine and method of improving the ink splitting in such a short inking unit |
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| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
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