JPH05169633A - Ink controller of printer - Google Patents
Ink controller of printerInfo
- Publication number
- JPH05169633A JPH05169633A JP34323691A JP34323691A JPH05169633A JP H05169633 A JPH05169633 A JP H05169633A JP 34323691 A JP34323691 A JP 34323691A JP 34323691 A JP34323691 A JP 34323691A JP H05169633 A JPH05169633 A JP H05169633A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- roller
- air
- forme
- width direction
- 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- Withdrawn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】本発明はオフセット印刷機のイン
キ流れ制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink flow controller for an offset printing machine.
【０００２】[0002]
【従来の技術】従来のオフセット印刷機のローラ配列
を、図６に示す。オフセット印刷に於ては，よく知られ
ている様に，インキ１９は，インキつぼ１よりインキキ
ー１６を通り，インキ元ローラ２，インキローラ群４，
インキ着けローラ７を経て，版胴８上の版１７の画線部
に選択的に供給される。2. Description of the Related Art FIG. 6 shows a roller arrangement of a conventional offset printing machine. In offset printing, as is well known, the ink 19 passes from the ink fountain 1 through the ink key 16, the ink source roller 2, the ink roller group 4,
It is selectively supplied to the image area of the plate 17 on the plate cylinder 8 via the inking roller 7.
【０００３】更に，版１７上のインキは，ゴムブランケ
ット胴１３に転写され，最終的に，印刷紙１５に印刷さ
れる。又，版１７には，水着ローラ９によって，湿し水
１２が供給されている。湿し水１２は，水元ローラ１
１，ローラ（Ｃ）１０，水着ローラ９を経て，版１７上
に供給されている。Further, the ink on the plate 17 is transferred to the rubber blanket cylinder 13 and finally printed on the printing paper 15. Further, the dampening water 12 is supplied to the plate 17 by the swimsuit roller 9. The dampening water 12 is the water source roller 1.
1, the roller (C) 10 and the swimsuit roller 9 are supplied onto the plate 17.
【０００４】湿し水１２は逆に版１７から，インキ着け
ローラ７，ローラ５，ローラ６を経て，インキローラ群
４の中へも入ってゆく。従って，印刷中は，インキロー
ラ上のインキは，水と，混合し，インキ・水のエマルジ
ョン状態となっている。各インキローラ上のインキ中へ
の水の混入している割合，いわゆるインキ中含水率の値
は，インキローラが版１７に近い程，高く，版１７から
離れる従って値は小さくなる。例えば，各ローラ上の含
水率の値は，図７のようになっていると考えられる。On the contrary, the dampening water 12 also enters the ink roller group 4 from the plate 17 through the inking roller 7, the roller 5 and the roller 6. Therefore, during printing, the ink on the ink roller mixes with water to form an ink / water emulsion state. The value of the water content in the ink on each ink roller, the so-called water content in the ink, is higher as the ink roller is closer to the plate 17, and the value is smaller as the ink roller is farther from the plate 17. For example, the value of water content on each roller is considered to be as shown in FIG.
【０００５】さて，印刷物の全体の濃度や，部分的な濃
度を変えたい場合は，現在の印刷機では，インキキー１
６を開閉することによって，行っている。インキキー１
６は，図８に示すように，ローラの巾方向に多数に分割
されており，各キーを単独に動かして，インキ元ローラ
２とのすき間２０を開閉して，インキ１９の巾方向の供
給量を調節している。Now, when it is desired to change the overall density or a partial density of a printed matter, in the current printing press, the ink key 1
This is done by opening and closing 6. Ink key 1
As shown in FIG. 8, 6 is divided into a large number in the width direction of the roller, and each key is independently moved to open and close the gap 20 with the ink source roller 2 to supply the ink 19 in the width direction. Adjusting the amount.
【０００６】[0006]
【発明が解決しようとする課題】前述の従来技術には次
のような問題点がある。 （１） 印刷物のローラ巾方向のインキ濃度分布が，目
標としている印刷物の濃度分布と異る時，印刷機操作員
は，インキキー１６の開閉によって調整するが，図６に
示すように，インキキー１６と，版１７の間には多数の
ローラがあり，インキは多数のローラを転移して，版１
７に達するため，応答が悪い。 （２） ローラ間のインキの転移には，インキ中の含水
率が関係しており，ローラ上のインキ中の含水率の分布
によって，思うようにインキが上流（インキ元ローラ
側）から，下流（版側）へ流れず，インキキー１６の操
作だけでは，操作性及び応答性が悪い。The above-mentioned prior art has the following problems. (1) When the ink density distribution of the printed matter in the roller width direction is different from the target density distribution of the printed matter, the operator of the printing machine makes adjustments by opening and closing the ink key 16, but as shown in FIG. There are many rollers between the plate 17 and the ink, and the ink is transferred from the many rollers to the plate 1
Since it reaches 7, the response is bad. (2) The transfer of ink between rollers is related to the water content in the ink, and depending on the distribution of the water content in the ink on the rollers, the ink may flow from the upstream side (ink source roller side) to the downstream side, as expected. The operability and responsiveness are poor only by operating the ink key 16 without flowing to the (plate side).
【０００７】本発明はローラ間のインキの流れを調整す
る応答性の優れたインキ制御装置を提供することを目的
とするものである。It is an object of the present invention to provide an ink control device which adjusts the flow of ink between rollers and has excellent responsiveness.
【０００８】[0008]
【課題を解決するための手段】図１に示すように，イン
キ着けローラ７の巾方向に，多数のエヤパイプ２１を並
べて，各パイプ２１から風を吹き出し，インキ着けロー
ラ７の表面の含水インキに吹きつけ，インキ中の水分を
蒸発させることにより，インキ着けローラ７上の含水率
を変化させ，ローラ１５とインキ着けローラ７間のイン
キの転移率を変化させて，版１７に渡るインキ量を制御
する。As shown in FIG. 1, a large number of air pipes 21 are arranged in the width direction of the inking roller 7, and air is blown from each of the pipes 21 so that the water-containing ink on the surface of the inking roller 7 is formed. By spraying and evaporating the water in the ink, the water content on the inking roller 7 is changed, the transfer rate of the ink between the roller 15 and the inking roller 7 is changed, and the ink amount across the plate 17 is changed. Control.
【０００９】[0009]
【作用】複数のエヤパイプ２１からの風量や風温を個別
に制御することによって，ローラ上の含水インキから蒸
発する湿し水の蒸発量をコントロールし，インキ着けロ
ーラ７上の含水率を巾方向に自在に制御する。これによ
って、ローラ間のインキの転移率を変化させ，巾方向の
インキの流れを制御できる。The amount of dampening water evaporated from the water-containing ink on the rollers is controlled by individually controlling the amount of air and the temperature of air from the plurality of air pipes 21, and the water content on the inking roller 7 is adjusted in the width direction. Control freely. As a result, the transfer rate of the ink between the rollers can be changed and the ink flow in the width direction can be controlled.
【００１０】[0010]
【実施例】本発明の実施例を図１乃至図５について説明
する。１はインキつぼ，２はインキ元ローラ，３はイン
キ呼び出しローラ，４はインキローラ群，５はローラ，
６はローラ，７はインキ着けローラ，８は版胴，９は水
着けローラ，１０はローラ，１１は水元ローラ，１２は
湿し水，１３はブランケット胴，１４は圧胴，１７は
版，１８はローラ，２１はエヤパイプ，２２は流量制御
弁，２３は仕切り板，２４は給気ダクト，２５は温風
源，２６は空気取入口である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. 1 is an ink fountain, 2 is an ink source roller, 3 is an ink feeding roller, 4 is an ink roller group, 5 is a roller,
6 is a roller, 7 is an inking roller, 8 is a plate cylinder, 9 is a water roller, 10 is a roller, 11 is a water source roller, 12 is a dampening water, 13 is a blanket cylinder, 14 is an impression cylinder, and 17 is a plate. , 18 is a roller, 21 is an air pipe, 22 is a flow control valve, 23 is a partition plate, 24 is an air supply duct, 25 is a hot air source, and 26 is an air inlet.
【００１１】なお、エヤパイプ２１で，エアを吹きつけ
るローラはインキ着けローラ７に限らず，図１示すどの
インキローラでもよく，１本あるいは，複数本のインキ
ローラに適用しても良い。またエヤパイプ２１の代わり
に，エヤダクトを用いても良い。図６は，温風のエヤ風
量を制御する具体的な構成を示すもので、空気取入口か
ら入ったエヤは，温風源２５で加熱圧縮され，給気ダク
ト２４を通り，流量制御弁２２で流量を制御されて，エ
ヤパイプ２１を経て，インキローラ表面に吹きつけられ
る。流量制御弁２２で，流量を制御する方法としては，
風の仕切板２３を設けて，仕切板２３を回転させ，風の
通る断面積を変化させて，行うことができる。It should be noted that the roller for blowing air with the air pipe 21 is not limited to the inking roller 7, but may be any ink roller shown in FIG. 1, and may be applied to one or a plurality of ink rollers. An air duct may be used instead of the air pipe 21. FIG. 6 shows a specific configuration for controlling the air volume of warm air. Air entering from the air intake is heated and compressed by the hot air source 25, passes through the air supply duct 24, and flows through the flow control valve 22. And is sprayed onto the surface of the ink roller through the air pipe 21. As a method of controlling the flow rate with the flow rate control valve 22,
This can be performed by providing the partition plate 23 for the wind and rotating the partition plate 23 to change the cross-sectional area through which the wind passes.
【００１２】次に本装置の作用を説明する。一般に，イ
ンキが，上流のローラから下流のローラへ伝わってゆく
時，流れるインキ量はローラ間の転移率によって決ま
る。転移率とは，２つのローラのニップ部分でインキが
合流し，再び***する時の***比を表わし，次のように
定義される。Next, the operation of this apparatus will be described. Generally, when ink is transferred from an upstream roller to a downstream roller, the amount of ink flowing is determined by the transfer rate between rollers. The transfer rate represents the splitting ratio when the ink merges and splits again at the nip portion of the two rollers, and is defined as follows.
【００１３】図２に示すように，上流側のローラと，
下流側のローラがあり，ローラ上のインキ膜厚を，ニ
ップの前後で，それぞれｔ1 ，ｔ1 ′及びｔ2 ，ｔ2 ′
とすると，転移率αは、次の式で与えられる。 α＝ｔ2 ′／（ｔ1 ＋ｔ2 ） ………（１）式 （１）式を変形すると， ｔ2 ′＝α（ｔ1 ＋ｔ2 ） ………（２）式 下流ローラへのインキの伝達は，ｔ2 ′によって行われ
るので，（２）式よりαが大きい程，下流へのインキの
流れは良い。従って，αが，巾方向で部分的に制御でき
れば，インキの流れを制御できる。As shown in FIG. 2, the roller on the upstream side,
There is a roller on the downstream side, and the ink film thickness on the roller is t 1 , t 1 ′ and t 2 , t 2 ′ before and after the nip, respectively.
Then, the transfer rate α is given by the following equation. α = t 2 ′ / (t 1 + t 2 ) ... (1) Equation (1) is transformed to t 2 ′ = α (t 1 + t 2 ) ... (2) Equation Ink to the downstream roller Is transmitted by t 2 ′, the greater α is from the equation (2), the better the ink flow downstream. Therefore, if α can be partially controlled in the width direction, the ink flow can be controlled.
【００１４】さて，転移率αを変える方法として，２つ
のローラ間の含水率を制御することが考えられる。再び
図２で，ローラとローラのローラ上のインキの含水
率をニップの前後でそれぞれｗ1 ，ｗ1 ′，及びｗ2 ，
ｗ2 ′とすると，転位率αは（３）式で表わされる。As a method of changing the transfer rate α, it is possible to control the water content between the two rollers. Referring again to FIG. 2, the water content of the ink on the roller and on the roller of the roller is w 1 , w 1 ′, and w 2 , respectively before and after the nip.
Assuming that w 2 ′, the dislocation rate α is expressed by the equation (3).
【００１５】 α＝ｆ（ｗ1 ，ｗ2 ） ……………（３）式 ｗ1 ＝ｗ2 の時の転位率αをαo とすると，ｗ2 ＞ｗ1
の時α＜αo となる。２つのローラ間の含水率の差をΔ
ｗとすると， Δｗ＝ｗ2 −ｗ1 ……………（４）式 転移率αは，（５）で表現できる。Α = f (w 1 , w 2 ) ... (3) Formula When dislocation rate α when w 1 = w 2 is α o , w 2 > w 1
Then α <α o . Δ the difference in water content between the two rollers
If w, then Δw = w 2 −w 1 (4) Equation (4) The transition rate α can be expressed by (5).
【００１６】 α＝ｇ（Δｗ） ……………（５）式 Δｗが大きい程αは小さくなる。この様子を図３に示
す。図３から知れるように，２つのローラ間の含水率差
Δｗを制御することにより，インキ転移率を変えること
ができる。例えば，図１に示すエヤパイプ２１のエヤを
吹きかけることにより，各ローラ上のインキ中の含水率
を図４に示すように変えることができ，インキの流れを
良くすることができる。Α = g (Δw) (5) The larger Δw, the smaller α. This state is shown in FIG. As is known from FIG. 3, the ink transfer rate can be changed by controlling the water content difference Δw between the two rollers. For example, by spraying the air of the air pipe 21 shown in FIG. 1, the water content in the ink on each roller can be changed as shown in FIG. 4, and the ink flow can be improved.
【００１７】[0017]
【発明の効果】本発明による印刷機のインキ制御装置
は，オフセット印刷機において，インキ着ローラ又はイ
ンキローラ群の少くとも１つのローラ表面にローラ巾方
向に沿い空気を吹付ける手段を設けたことにより，次の
効果を有する。ローラ巾方向に多数のリヤパイプを設置
し，各エヤパイプから吹き出すエヤの風量あるいは風温
をコントロールすることにより，印刷機の巾方向のイン
キの流れをコントロールできる。従って、インキキーに
よるコントロールよりも，応答性の早い，操作性の良い
印刷物の巾方向の濃度コントロールが可能となる。The ink control device for a printing press according to the present invention is, in an offset printing press, provided with means for blowing air along the roller width direction on at least one roller surface of the inking roller or the ink roller group. Has the following effects. By installing multiple rear pipes in the roller width direction and controlling the air volume or temperature of the air blown from each air pipe, the ink flow in the width direction of the printing machine can be controlled. Therefore, it is possible to control the density of the printed matter in the width direction with quick response and good operability as compared with the control by the ink key.
【図１】本発明の実施例の全体構成図である。FIG. 1 is an overall configuration diagram of an embodiment of the present invention.
【図２】ローラ間のインキの流れの説明図である。FIG. 2 is an explanatory diagram of an ink flow between rollers.
【図３】インキ転移率と含水率差の関係図である。FIG. 3 is a relationship diagram between the ink transfer rate and the water content difference.
【図４】エヤ吹きかけによるインキローラ上のインキの
含水率の変化を示す線図である。FIG. 4 is a diagram showing a change in water content of ink on an ink roller due to air spraying.
【図５】温風の風量制御装置の構成図である。FIG. 5 is a configuration diagram of an air volume control device for warm air.
【図６】従来のオフセット印刷機の構成図である。FIG. 6 is a configuration diagram of a conventional offset printing machine.
【図７】インキローラ上のインキの含水率を示す図であ
る。FIG. 7 is a diagram showing a water content of ink on an ink roller.
【図８】インキキーの構造を示す斜視図である。FIG. 8 is a perspective view showing the structure of an ink key.
１ インキ元ローラ ４ インキローラ群 ７ インキ着ローラ ８ 版胴 １１ 水元ローラ ２１ エヤパイプ 1 Ink source roller 4 Ink roller group 7 Inking roller 8 Plate cylinder 11 Water source roller 21 Air pipe
Claims (1)
ーラ又はインキローラ群の少くとも１つのローラ表面に
ローラ巾方向に沿い空気を吹付ける手段を設けたことを
特徴とする印刷機のインキ制御装置。1. An ink control device for an offset printing machine, comprising means for blowing air along a roller width direction on at least one roller surface of an inking roller or an ink roller group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34323691A JPH05169633A (en) | 1991-12-25 | 1991-12-25 | Ink controller of printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34323691A JPH05169633A (en) | 1991-12-25 | 1991-12-25 | Ink controller of printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05169633A true JPH05169633A (en) | 1993-07-09 |
Family
ID=18359976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34323691A Withdrawn JPH05169633A (en) | 1991-12-25 | 1991-12-25 | Ink controller of printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05169633A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632035U (en) * | 1992-10-09 | 1994-04-26 | 株式会社小森コーポレーション | Water suppression device for printing machine |
| EP1083046A2 (en) * | 1999-08-19 | 2001-03-14 | Milton R. Lemaster | Dual air curtain apparatus for reducing infiltration of dampening solution into an inking unit of a lithographic printing press |
| EP1671791A1 (en) | 2004-12-17 | 2006-06-21 | Komori Corporation | Printing press |
| EP1714783A2 (en) | 2005-04-20 | 2006-10-25 | Komori Corporation | Air blowing device for printing press |
| JP2008173986A (en) * | 2003-07-26 | 2008-07-31 | Man Roland Druckmas Ag | Apparatus for exhausting inking apparatus |
-
1991
- 1991-12-25 JP JP34323691A patent/JPH05169633A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632035U (en) * | 1992-10-09 | 1994-04-26 | 株式会社小森コーポレーション | Water suppression device for printing machine |
| EP1083046A2 (en) * | 1999-08-19 | 2001-03-14 | Milton R. Lemaster | Dual air curtain apparatus for reducing infiltration of dampening solution into an inking unit of a lithographic printing press |
| EP1083046A3 (en) * | 1999-08-19 | 2001-06-20 | Milton R. Lemaster | Dual air curtain apparatus for reducing infiltration of dampening solution into an inking unit of a lithographic printing press |
| JP2008173986A (en) * | 2003-07-26 | 2008-07-31 | Man Roland Druckmas Ag | Apparatus for exhausting inking apparatus |
| EP1671791A1 (en) | 2004-12-17 | 2006-06-21 | Komori Corporation | Printing press |
| EP1714783A2 (en) | 2005-04-20 | 2006-10-25 | Komori Corporation | Air blowing device for printing press |
| US7347143B2 (en) | 2005-04-20 | 2008-03-25 | Komori Corporation | Air blowing device for printing press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990311 |