JPH11235880A - Printing plate - Google Patents
Printing plateInfo
- Publication number
- JPH11235880A JPH11235880A JP1504398A JP1504398A JPH11235880A JP H11235880 A JPH11235880 A JP H11235880A JP 1504398 A JP1504398 A JP 1504398A JP 1504398 A JP1504398 A JP 1504398A JP H11235880 A JPH11235880 A JP H11235880A
- Authority
- JP
- Japan
- Prior art keywords
- shape
- cells
- printing plate
- ink
- cell
- 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
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本願発明は、エッチング法又はレ
ーザ破壊法により製作される印刷版(グラビア版、凸
版、及び親インキ性を有する平滑部を有するフレキソ版
やオフセット版)であって、ライト部のドットの形状を
改善することによりインキの分散性が良好な印刷物が得
られ、さらに、凹版にあっては、ライト部のドットの形
状を改善することによりセルからの被印刷物へのインキ
の転移性が良好でありライト部が白く抜けて見えるイン
キが転移していないポイントを無くした印刷物が得られ
る印刷版に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing plate (gravure plate, letterpress plate, flexographic plate or offset plate having a smooth portion having ink affinity) produced by an etching method or a laser destruction method. By improving the shape of the dots in the area, a printed matter having good dispersibility of the ink can be obtained, and in the case of intaglio printing, by improving the shape of the dots in the light area, the ink from the cells to the print medium can be obtained. The present invention relates to a printing plate capable of obtaining a printed matter which has good transferability and eliminates points at which ink in which a light portion appears as white is not transferred.
【0002】[0002]
【従来の技術】インキの分散性は、その濃淡階調度を出
すための一個のドットの面積の大小とインキの厚さとド
ットの面積一杯に均一にインクが転移していることの相
関関係によって決まる。ドットの面積が小さくてもイン
キが厚く転移すると濃淡階調度が不自然になる。また、
ドットの面積が大きくてもインキが均一に転移せず中央
が高くなる山盛り状態であると、ドットの大きさに対す
るインクの分散性が悪く、濃淡階調度も悪くなる。さら
に、転移インキ量及びドット面積が同一の場合、丸いド
ット形状は細長いドット形状に比べてインクの分散性が
悪い。他方、細長いドット形状はモアレが生じる虞れが
ある。図5は、電子彫刻機のダイヤモンド針の彫り込み
により得られる従来のグラビア印刷版のセルの形状を示
すもので、中央部が一番深い角錐孔状の菱形セルであ
り、セルの深度が浅くセル幅が大きいのでセル内でのイ
ンキの表面張力が小さく作用しインクの転移性が良い
が、転移したインキが山盛りとなり平滑にならないから
ドットの大きさに対するインキの分散性が悪く、濃淡階
調度も悪くなる。図6は、エッチング法により得られる
従来の一般的なグラビア印刷版のセルの形状を示すもの
で、丸孔形セルであり、最シャドウ部のセルをフリーフ
ローセルとすることができる。しかし、セルの輪郭部の
深度が深くセル幅が小さいのでライト部においてはセル
内の孔壁面におけるインキの表面張力が大きく作用しイ
ンクの転移性が図5のセルよりも劣り、ライト部におけ
る白く抜けて見える点がやや多い。また図示しないが、
本願出願人の出願の特願平6−28991号に係るグラ
ビア印刷版は、エッチング法により得られるグラビア印
刷版であり、ライト部のセルの形状がドクター接触線に
直角な方向に長尺な長孔形セルであり、ドクターでセル
内のインキが掻き取られないので中抜け(セル中央部で
のインキの不転移)が起こりにくいものの、セル幅が小
さいのでセル内でのインキの表面張力が大きく作用しイ
ンキの転移性が図5のセルに比べて劣り、図5や図6の
セルに比べてモアレが発生しやすいので特願平6−12
4628号や特願平6−150390号のようなモアレ
を解消することが必須となる。さらに図示しないが、本
願出願人の出願の特願平7−216714号に係るグラ
ビア印刷版は図6のセルと同様の丸孔形セルでライト部
からシャドウ部の開孔率となるように分散しており、エ
ッチング管理が良好に行われ完全な分布状態のセルがで
きれば濃淡階調が優れているが、セルが開口されなかっ
たりセルが繋がってしまうなどエッチング管理が難しい
上、図6と同様にセル内でのインキの表面張力が大きく
作用しインクの転移性が劣る。他方、凸版や平版におい
ても、ライト部のインクを盛り付けるドットの形状は、
図6に略対応した略円形であるのでインキの分散性が劣
っていた。2. Description of the Related Art The dispersibility of an ink is determined by the correlation between the size of an area of one dot for obtaining its gradation, the thickness of the ink, and the fact that the ink is transferred uniformly over the entire area of the dot. . Even if the area of the dot is small, if the thickness of the ink is transferred, the gray scale becomes unnatural. Also,
In a heaping state in which the ink does not transfer evenly even when the area of the dot is large and the center is high, the dispersibility of the ink with respect to the size of the dot is poor, and the gradation of light and shade is also poor. Further, when the transferred ink amount and the dot area are the same, the round dot shape has poor dispersibility of the ink as compared with the elongated dot shape. On the other hand, an elongated dot shape may cause moire. FIG. 5 shows a cell shape of a conventional gravure printing plate obtained by engraving a diamond needle of an electronic engraving machine. The central portion is a diamond cell having a deepest pyramidal hole, and the cell has a shallow cell depth. Since the width is large, the surface tension of the ink in the cell acts small and the ink transferability is good, but the transferred ink is heaped and not smooth, so the dispersibility of the ink with respect to the size of the dot is poor, and the gradation gradation is also high. become worse. FIG. 6 shows the shape of a cell of a conventional general gravure printing plate obtained by an etching method. The cell is a round hole cell, and the cell in the shadow portion can be a free flow cell. However, since the contour portion of the cell is deep and the cell width is small, the surface tension of the ink on the wall surface of the hole in the cell is large in the light portion, so that the ink transferability is inferior to that of the cell in FIG. There are a lot of points that can be seen. Although not shown,
The gravure printing plate according to Japanese Patent Application No. 6-28991 filed by the applicant of the present application is a gravure printing plate obtained by an etching method, and the shape of the cell of the light portion is elongated in a direction perpendicular to the doctor contact line. This is a perforated cell. The ink inside the cell is not scraped off by a doctor, so it is unlikely to drop out (non-transfer of ink at the center of the cell). It has a large effect and the transferability of the ink is inferior to that of the cell of FIG. 5, and moire is more likely to occur than the cells of FIG. 5 and FIG.
It is indispensable to eliminate moiré as disclosed in Japanese Patent Application No. 4628 and Japanese Patent Application No. 6-150390. Although not shown, the gravure printing plate according to Japanese Patent Application No. 7-216714 filed by the applicant of the present application is a round hole cell similar to the cell in FIG. 6 and is dispersed so as to have an opening ratio from a light portion to a shadow portion. If the etching control is performed well and a cell in a completely distributed state is formed, the gray scale is excellent, but the etching control is difficult, for example, the cells are not opened or the cells are connected, and similar to FIG. In addition, the surface tension of the ink in the cell greatly affects the transferability of the ink. On the other hand, even in letterpress and planographic printing, the shape of the dots where
Since it was a substantially circular shape substantially corresponding to FIG. 6, the dispersibility of the ink was poor.
【0003】[0003]
【発明が解決しようとする課題】本願発明は、エッチン
グ法又はレーザ破壊法により製作される印刷版(グラビ
ア版、凸版、及び親インキ性を有する平滑部を有するフ
レキソ版やオフセット版)であって、ライト部のドット
の形状を改善することによりインキの分散性が良好な印
刷物が得られ、さらに、凹版にあっては、ライト部のド
ットの形状を改善することによりセルからの被印刷物へ
のインキの転移性が良好でありライト部が白く抜けて見
えるインキが転移していないポイントを無くした印刷物
が得られる印刷版を提供することを目的としている。SUMMARY OF THE INVENTION The present invention relates to a printing plate (gravure plate, letterpress plate, flexographic plate or offset plate having a smooth portion having ink affinity) produced by an etching method or a laser destruction method. By improving the shape of the dots in the light part, a printed matter having good ink dispersibility can be obtained. In the case of intaglio printing, the shape of the dots in the light part can be improved to improve the shape of the dots in the cell. It is an object of the present invention to provide a printing plate from which a printed matter having good ink transferability and free from points where the light portion looks white and the ink is not transferred is obtained.
【0004】[0004]
【課題を解決するための手段】本願発明は、画素がエッ
チング法又はレーザ破壊法により製作される印刷版であ
って、ライト部のインクを盛り付けるドットの形状を凹
部、凸部、又は親インキ性を有する平滑部とし、しかも
該ドットを正面から視た形状がX形、又はY形、又は円
形から少なくとも一本の放射状の短線を延ばした形状の
少なくとも一種類を選択し、かつ濃淡階調度に対応する
ように漸次に大きく形成したことを特徴とする印刷版を
提供するものである。SUMMARY OF THE INVENTION The present invention relates to a printing plate in which pixels are manufactured by an etching method or a laser destruction method. And the shape of the dot as viewed from the front is X-shaped, or Y-shaped, or at least one type of shape obtained by extending at least one radial short line from a circle is selected. It is an object of the present invention to provide a printing plate characterized in that the printing plate is formed to have a correspondingly larger size.
【0005】[0005]
【実施の形態】図1は、本願発明のグラビア印刷版の第
一の実施の形態を示す。このグラビア印刷版は、濃淡階
調度3%〜35%のライト部ないし中間調部のセルを、
X形の中央部に円形を重ねた形状に形成し、かつ濃淡階
調度に対応するようにシャドウ部のスクリーン線の近傍
に相到する位置に到達するまでほぼ相似形を維持して漸
次に大きく形成し、濃淡階調度35%超〜64%未満の
中間調部ないしシャドウ部のセルを、64%のシャドウ
部の四角いセル形状に近ずくように漸次に変化させて形
成し、濃淡階調度64%超〜75%未満のシャドウ部の
セルを、75%のシャドウ部の四角いセル形状に近ずく
ように漸次に変化させて形成し、濃淡階調度75%〜8
0%未満のシャドウ部のセルを、スクリン線が細くなる
ように漸次に開孔率を高めて形成し、濃淡階調度80%
のシャドウ部のセルを、スクリン線の交差部又はその近
傍を断続させてフリーフローセルとした。このグラビア
印刷版は、特にライト部のセルがX形に形成してあるの
で、丸孔形セルに比べてインキの分散性が高くなるとと
もに、セルの交差部での深度が大きく交差部を外れた所
で深度が浅くなるようにエッチングされるので、セルの
交差部を外れた深度が浅い部分の表面張力が小さくとこ
ろのインキの転移性の良さが深度が深いためにインキの
転移性が劣るセルの交差部に対して影響を及ぼして全体
としてインキの転移性が良好である。実施例として、1
00ミクロン前後にバラード銅メッキしてなる被版面を
砥石研磨またはバフ研磨し、表面活性化処理してから、
アルゴン・ネオンガスレーザビームー等の弱いレーザビ
ームによって硬化し得る高感度特性を有する感光性樹脂
膜を5〜8ミクロンの厚さとなるように塗布形成し、さ
らに感光性樹脂膜の酸化を防止する被膜をオーバーコー
トし、次いで、感光性樹脂膜に前記レーザビームをドク
ター版面接触線と直交する方向に主走査するとともにレ
ーザビームの版面における隣合う被照射線同士がオーバ
ーラップしてずれるように副走査しかつ印刷情報に応じ
たレーザビームの点滅照射を行うことにより、感光性樹
脂膜にネガチブな印刷情報を書き込んだ後、現像を行っ
て感光性樹脂膜の未露光部分を溶解して後、レジストを
加熱硬化してからエッチングして被版面にポジチブな印
刷情報を点状に彫り込み、レジスト剥離して耐刷力を付
けるためクロムメッキしたところ、ライト部の印刷がイ
ンキが転移せずに白く見えるポイントを図5に示すセル
と同等に無くした印刷物が得られた。また、インキの分
散性は図5に示すセルよりも向上した。FIG. 1 shows a gravure printing plate according to a first embodiment of the present invention. This gravure printing plate has cells in a light portion or a halftone portion with a gradation gradation of 3% to 35%,
It is formed in a shape in which a circle is superimposed on the center of the X-shape, and maintains a similar shape until it reaches a position near the screen line of the shadow portion so as to correspond to the gray scale, and gradually increases in size. Then, the cells of the halftone portion or the shadow portion having a gradation gradient of more than 35% to less than 64% are gradually changed so as to approach a square cell shape of a shadow portion of 64%. % To less than 75% are formed by gradually changing the cells of the shadow portion so as to approach the rectangular cell shape of the 75% shadow portion.
Cells having shadow portions of less than 0% are formed by gradually increasing the aperture ratio so that the screen lines become thinner, and the gradation of gradation is 80%.
The cell of the shadow portion was interrupted at the intersection of the screen lines or in the vicinity thereof to form a free flow cell. In this gravure printing plate, since the cells in the light portion are formed in an X shape, the dispersibility of the ink is higher than that of the round-hole cells, and the depth at the intersection of the cells is large and the gravure printing plate deviates from the intersection. Etching is performed so that the depth becomes shallow at places where the surface tension is small at portions where the depth is off the intersection of the cells. This has an effect on the intersections of the cells, so that the ink transferability is good as a whole. As an example, 1
After the surface to be plated, which is plated with ballad copper to around 00 microns, is ground or buffed and surface activated,
A photosensitive resin film having high sensitivity that can be cured by a weak laser beam such as an argon / neon gas laser beam is applied to a thickness of 5 to 8 microns to form a coating, and a coating for preventing the photosensitive resin film from being oxidized. Then, the laser beam is main-scanned on the photosensitive resin film in a direction orthogonal to the doctor plate surface contact line, and the sub-scan is performed such that adjacent irradiated lines on the plate surface of the laser beam overlap and shift. After writing negative print information on the photosensitive resin film by flashing and irradiating the laser beam according to the print information, developing and dissolving the unexposed part of the photosensitive resin film, the resist After heating and curing, the plate is etched to engrave positive printing information on the plate surface in dots, and the chrome Were key, print the light section is a point that appears white without ink transfer printed material lost equivalent to the cell shown in FIG. 5 were obtained. Further, the dispersibility of the ink was improved as compared with the cell shown in FIG.
【0006】図2は、本願発明のグラビア印刷版の第二
の実施の形態を示す。このグラビア印刷版は、濃淡階調
度3%〜6%のライト部のセルを、円から一本の放射状
の短線を延ばした形、いわゆる鍵孔形状に形成し、かつ
濃淡階調度に対応するようにほぼ相似形を維持して大き
く形成し、濃淡階調度6%超〜16%未満のライト部の
セルを、円から二本の放射状の短線を両側に延ばした
形、いわゆるφ形に形成し、かつ濃淡階調度に対応する
ようにほぼ相似形を維持して大きく形成し、濃淡階調度
6%超〜49%のライト部ないし中間調部のセルを、X
形の中央に丸形を重ねた形に形成し、濃淡階調度49%
超〜64%未満の中間調部ないしシャドウ部のセルを、
64%のシャドウ部のセルに漸次に近ずく形状に変化さ
せて形成し、濃淡階調度64%〜80%未満のシャドウ
部のセルを、スクリン線が細くなるように漸次に開孔率
を高めて形成し、濃淡階調度80%のシャドウ部のセル
を、スクリン線の交差部又はその近傍を断続させてフリ
ーフローセルとした。このグラビア印刷版は、特にライ
ト部のセルの形として、円形から少なくとも一本の放射
状の短線部を有する形に形成し、かつ、ドットの大きさ
に相違して選択してあり、従来の丸孔形セルに比べてイ
ンキの分散性が高くなるとともに、セルの交差部での深
度が大きく交差部を外れた所で深度が浅くなるようにエ
ッチングされるので、セルの交差部を外れた深度が浅い
部分の表面張力が小さくところのインキの転移性の良さ
が深度が深いためにインキの転移性が劣るセルの交差部
に対して影響を及ぼして全体としてインキの転移性が良
好である。FIG. 2 shows a gravure printing plate according to a second embodiment of the present invention. In this gravure printing plate, the cells of the light portion having a gradation gradation of 3% to 6% are formed in a shape in which one radial short line is extended from a circle, that is, a so-called keyhole shape, and are adapted to the gradation gradation. The cell of the light part having a gradation gradient of more than 6% to less than 16% is formed into a so-called φ shape in which two radial short lines are extended from both sides on both sides. And a cell of a light portion or a halftone portion having a gray scale of more than 6% to 49% is formed by maintaining a similar shape so as to correspond to the gray scale.
Formed with a round shape superimposed on the center of the shape, with a gradation of 49%
Super to less than 64% of cells in the halftone or shadow area
The cell is formed by gradually changing the shape so as to gradually approach the cell of the shadow portion of 64%, and the cell of the shadow portion having the gradation of 64% to less than 80% is gradually increased in the opening ratio so that the screen line becomes thin. The cells in the shadow area having a gray scale of 80% were intermittently intersected at the intersection of the screen lines or in the vicinity thereof to form free flow cells. This gravure printing plate is formed from a circular shape to a shape having at least one radial short line portion, particularly as a shape of a cell of a light portion, and is selected differently in the size of a dot. The ink dispersibility is higher than that of a porous cell, and the depth at the intersection of the cells is so large that it is etched away from the intersection, so that the depth becomes shallower. However, the good transferability of the ink where the surface tension is small in the shallow portion affects the intersection of the cells where the transferability of the ink is inferior because the depth is deep, so that the transferability of the ink as a whole is good.
【0007】図3は、本願発明のグラビア印刷版の第三
の実施の形態を示す。このグラビア印刷版は、濃淡階調
度3%〜25%のライト部ないし中間調部のセルを、+
形の中央に丸形を重ねた形状に形成し、かつ濃淡階調度
に対応するようにスクリーン線の位置に到達するまでほ
ぼ相似形に漸次に大きく形成し、濃淡階調度49%超〜
75%未満の中間調部ないしシャドウ部のセルを、+形
の中央に丸形を重ねた形状を維持して丸形部分を濃淡階
調度に対応するようにスクリーン線の位置に到達するま
でほぼ相似形に漸次に大きく形成し、濃淡階調度74%
〜80%未満のシャドウ部のセルを、隅丸の正方形形成
しかつ濃淡階調度に対応するようにスクリン線が所定の
細さになるまで漸次に開孔率を高めて形成し、濃淡階調
度80%のシャドウ部のセルを、スクリン線の交差部又
はその近傍を断続させてフリーフローセルとした。この
グラビア印刷版は、特にライト部のセルが+形の中央に
丸形を重ねた形状に形成し、かつ濃淡階調度に対応する
ようにスクリーン線の位置に到達するまでほぼ相似形に
漸次に大きく形成されているので、従来の丸孔形セルに
比べてインキの分散性が高くなるとともに、セルの交差
部での深度が大きく交差部を外れた所で深度が浅くなる
ようにエッチングされるので、セルの交差部を外れた深
度が浅い部分の表面張力が小さくところのインキの転移
性の良さが深度が深いためにインキの転移性が劣るセル
の交差部に対して影響を及ぼして全体としてインキの転
移性が良好である。FIG. 3 shows a third embodiment of the gravure printing plate of the present invention. In this gravure printing plate, cells of a light portion or a halftone portion having a gradation gradation of 3% to 25% are formed by +
It is formed in a shape in which a round shape is superimposed on the center of the shape, and is gradually formed to have a similar shape until it reaches the position of the screen line so as to correspond to the gradation gradation.
The cells of less than 75% of the halftone portion or the shadow portion are maintained until the round portion reaches the position of the screen line so as to correspond to the gray scale while maintaining the shape in which the circle is superimposed on the center of the + shape. Formed gradually in a similar fashion, with 74% gradation
A cell having a shadow portion of less than .about.80% is formed into a square with rounded corners, and the porosity is gradually increased until the screen lines have a predetermined thickness so as to correspond to the gray scale. 80% of the cells in the shadow area were intermittently intersected at the intersection of the screen lines or in the vicinity thereof, thereby forming free flow cells. This gravure printing plate, in particular, has a shape in which the cells of the light part are formed by superimposing a round shape at the center of the + shape, and gradually becomes almost similar until it reaches the position of the screen line so as to correspond to the gray scale. Because it is formed large, the dispersibility of the ink is higher than that of the conventional round-hole type cell, and the etching is performed so that the depth at the intersection of the cells is large and the depth outside the intersection is small. Therefore, the good surface transferability of the ink where the surface tension is small at the shallow part outside the cell intersection affects the intersection of the cell where the ink transferability is poor due to the deep depth. The transferability of the ink is good.
【0008】図4は、本願発明のグラビア印刷版の第四
の実施の形態を示す。このグラビア印刷版は、濃淡階調
度3%〜25%のライト部のセルを、Y形の中央に丸形
を重ねた形状に形成し、かつ濃淡階調度に対応するよう
にスクリーン線の位置に到達するまでほぼ相似形に漸次
に大きく形成し、濃淡階調度25%超〜49%のライト
部ないし中間調部のセルを、+形部と+形の中央に丸形
部重ねた形状に形成し、かつ濃淡階調度に対応するよう
にスクリーン線の位置に到達するまでほぼ相似形に漸次
に大きく形成し、濃淡階調度49%超〜74%未満の中
間調部ないしシャドウ部のセルを、+形の中央に丸形を
重ねた形状を維持して丸形部分を濃淡階調度に対応する
ようにスクリーン線の位置に到達するまでほぼ相似形に
漸次に大きく形成し、濃淡階調度74%〜80%未満の
シャドウ部のセルを、隅丸の正方形形成しかつ濃淡階調
度に対応するようにスクリン線が所定の細さになるまで
漸次に開孔率を高めて形成し、濃淡階調度80%のシャ
ドウ部のセルを、スクリン線の交差部又はその近傍を断
続させてフリーフローセルとした。このグラビア印刷版
は、特にライト部のセルがY形の中央に丸形を重ねた形
状に形成し、かつ濃淡階調度に対応するようにスクリー
ン線の位置に到達するまでほぼ相似形に漸次に大きく形
成されているので、従来の丸孔形セルに比べてインキの
分散性が高くなるとともに、セルの交差部での深度が大
きく交差部を外れた所で深度が浅くなるようにエッチン
グされるので、セルの交差部を外れた深度が浅い部分の
表面張力が小さくところのインキの転移性の良さが深度
が深いためにインキの転移性が劣るセルの交差部に対し
て影響を及ぼして全体としてインキの転移性が良好であ
る。FIG. 4 shows a gravure printing plate according to a fourth embodiment of the present invention. In this gravure printing plate, cells of a light portion having a gray scale of 3% to 25% are formed in a shape in which a circle is superimposed on the center of a Y-shape, and are positioned at screen lines so as to correspond to the gray scale. Until it reaches a similar shape, it gradually grows larger, and the cells of the light part or the halftone part with more than 25% to 49% of gray scale are formed in the shape of the + part and the round part overlapping the center of the + part. And a cell of a halftone portion or a shadow portion having a grayscale gradient of more than 49% to less than 74% is formed to have a similar shape gradually larger until reaching the position of the screen line so as to correspond to the grayscale gradient. While maintaining the shape in which the round shape is superimposed on the center of the + shape, the round portion is gradually increased to a substantially similar shape so as to correspond to the gray scale until reaching the position of the screen line, and the gray scale is 74% Form cells with less than 80% of shadows in rounded corners In addition, the porosity is gradually increased until the screen lines have a predetermined thickness so as to correspond to the gray scale, and the cells of the shadow portion having the gray scale of 80% are formed at or near the intersections of the screen lines. Was interrupted to obtain a free flow cell. In this gravure printing plate, the cells in the light part are formed in a shape in which a round shape is superimposed on the center of the Y shape, and gradually become almost similar until reaching the position of the screen line so as to correspond to the gray scale. Because it is formed large, the dispersibility of the ink is higher than that of the conventional round-hole type cell, and the etching is performed so that the depth at the intersection of the cells is large and the depth outside the intersection is small. Therefore, the good surface transferability of the ink where the surface tension is small at the shallow part outside the cell intersection affects the intersection of the cell where the ink transferability is poor due to the deep depth. The transferability of the ink is good.
【0009】本願発明の印刷版は、グラビア印刷版のみ
でなく、凸版、及び親インキ性を有する平滑部を有する
フレキソ版やオフセット版に適用すると、インキの転移
性がよく濃淡階調度を改善できる。また本願発明の印刷
版は、ロール印刷版のみでなく平版も含まれる。さらに
また本願発明は、上記実施例に示す製版法、すなわち、
レーザ露光・現像によるレジスト画像の形成とその後の
エッチングする方法に限定されるものでなく、ロール表
面を磁性粉末を含んだエポキシ樹脂等の硬質プラスチッ
ク膜で形成してヤグレーザ等の高力レーザで直接にセル
を彫り込んでなるグラビア印刷版も含まれる。When the printing plate of the present invention is applied to not only a gravure printing plate but also a flexographic plate or an offset plate having a relief portion and a smooth portion having ink affinity, the transferability of ink is good and the gradation of light and shade can be improved. . The printing plate of the present invention includes not only a roll printing plate but also a lithographic plate. Furthermore, the present invention is a plate making method described in the above embodiment,
The method is not limited to the method of forming a resist image by laser exposure / development and subsequent etching, but the surface of the roll is formed of a hard plastic film such as an epoxy resin containing a magnetic powder and directly applied with a high-power laser such as a yag laser. Also includes gravure printing plates engraved with cells.
【0010】[0010]
【発明の効果】以上説明してきたように、本願発明の印
刷版、エッチング法又はレーザ破壊法により製作される
印刷版(グラビア版、凸版、及び親インキ性を有する平
滑部を有するフレキソ版やオフセット版)によれば、ラ
イト部のドットの形状を改善することによりインキの分
散性が良好な印刷物が得られる。さらに、本願発明の印
刷版、エッチング法又はレーザ破壊法により製作される
印刷版、特に凹版(グラビア印刷版)によれば、ライト
部のドットの形状を改善することによりセルからの被印
刷物へのインキの転移性が良好でありライト部が白く抜
けて見えるインキが転移していないポイントを無くした
印刷物が得られる。すなわち、本願発明にかかるグラビ
ア印刷版によれば、図5に示す電子彫刻機のダイヤモン
ド針の彫り込みにより得られる従来のグラビア印刷版の
ライト部のセルの形状と同様に、ドット形状の中央部に
おいてセル深度が深く、四方にセル深度が浅く延びてい
るので、セル内で側壁面におけるインキの表面張力が小
さく抑えることができてインクの転移性が良く、加え
て、インキが山盛りとならないからインキの分散性が良
好であり、ライト部の印刷がインキが転移せずに白く見
えるポイントを図5に示すセルと同等に無くした印刷物
が得られた。また、インキの分散性は図5及び図6に示
すセルよりも向上した。さらに、本願発明の印刷版は、
モアレが生じない。As described above, the printing plate of the present invention, a printing plate manufactured by an etching method or a laser destruction method (a gravure plate, a relief plate, and a flexographic plate or offset having a smooth portion having ink affinity). According to the plate, a printed matter having good ink dispersibility can be obtained by improving the shape of the dots in the light portion. Further, according to the printing plate of the present invention, a printing plate manufactured by an etching method or a laser destruction method, in particular, an intaglio (gravure printing plate), the shape of the dots in the light portion is improved so that the printing from the cell to the printing object can be performed. The printed matter has good ink transferability and eliminates the points where the ink is not transferred where the light portion appears white. That is, according to the gravure printing plate according to the present invention, as in the cell shape of the light portion of the conventional gravure printing plate obtained by engraving the diamond needle of the electronic engraving machine shown in FIG. Since the cell depth is deep and the cell depth extends shallowly in all directions, the surface tension of the ink on the side wall surface in the cell can be kept small, and the ink transferability is good. The printed matter obtained was excellent in dispersibility, and the point where the printing in the light part appeared white without transferring the ink was equivalent to the cell shown in FIG. Further, the dispersibility of the ink was improved as compared with the cells shown in FIGS. Further, the printing plate of the present invention is
Moire does not occur.
【図1】本願発明のグラビア印刷版の第一の実施の形態
を示す濃淡階調度に対応したドット(セル)の形状を示
す図。FIG. 1 is a view showing a shape of a dot (cell) corresponding to a gray scale, showing a first embodiment of a gravure printing plate of the present invention.
【図2】本願発明のグラビア印刷版の第二の実施の形態
を示す濃淡階調度に対応したドット(セル)の形状を示
す図。FIG. 2 is a view showing a shape of a dot (cell) corresponding to a gray scale according to a second embodiment of the gravure printing plate of the present invention.
【図3】本願発明のグラビア印刷版の第三の実施の形態
を示す濃淡階調度に対応したドット(セル)の形状を示
す図。FIG. 3 is a view showing a shape of a dot (cell) corresponding to a gray scale according to a third embodiment of the gravure printing plate of the present invention.
【図4】本願発明のグラビア印刷版の第四の実施の形態
を示す濃淡階調度に対応したドット(セル)の形状を示
す図。FIG. 4 is a view showing a shape of a dot (cell) corresponding to a gray scale according to a fourth embodiment of the gravure printing plate of the present invention.
【図5】電子彫刻機のダイヤモンド針の彫り込みにより
得られる従来のグラビア印刷版のライト部のセルの形状
を示す図。FIG. 5 is a view showing a cell shape of a light portion of a conventional gravure printing plate obtained by engraving a diamond needle of an electronic engraving machine.
【図6】エッチング法により得られる従来の一般的なグ
ラビア印刷版のライト部のセルの形状を示す図。FIG. 6 is a diagram showing the shape of a cell in a light portion of a conventional general gravure printing plate obtained by an etching method.
Claims (1)
より製作される印刷版であって、ライト部のインクを盛
り付けるドットの形状を凹部、凸部、又は親インキ性を
有する平滑部とし、しかも該ドットを正面から視た形状
がX形、又はY形、又は円形から少なくとも一本の放射
状の短線を延ばした形状の少なくとも一種類を選択し、
かつ濃淡階調度に対応するように漸次に大きく形成した
ことを特徴とする印刷版。1. A printing plate in which pixels are manufactured by an etching method or a laser destruction method, wherein the shape of a dot for embedding ink in a light portion is a concave portion, a convex portion, or a smooth portion having ink affinity. The shape as viewed from the front of the dot is X-shaped, or Y-shaped, or at least one type of shape obtained by extending at least one radial short line from a circle,
A printing plate characterized in that the printing plate is formed gradually larger so as to correspond to the gradation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1504398A JP3770722B2 (en) | 1997-12-17 | 1998-01-08 | Print version |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9-364165 | 1997-12-17 | ||
JP36416597 | 1997-12-17 | ||
JP1504398A JP3770722B2 (en) | 1997-12-17 | 1998-01-08 | Print version |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11235880A true JPH11235880A (en) | 1999-08-31 |
JP3770722B2 JP3770722B2 (en) | 2006-04-26 |
Family
ID=26351111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1504398A Expired - Lifetime JP3770722B2 (en) | 1997-12-17 | 1998-01-08 | Print version |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3770722B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004167702A (en) * | 2002-11-15 | 2004-06-17 | Kyodo Printing Co Ltd | Gravure printing method and printed matter |
JP2009255410A (en) * | 2008-04-17 | 2009-11-05 | Dainippon Screen Mfg Co Ltd | Method of forming half tone dot image, method of forming threshold value matrix, threshold value matrix, method of manufacturing printing plate and printing plate |
CN103171243A (en) * | 2011-12-20 | 2013-06-26 | 上海运申制版模具有限公司 | Laser version character net-point processing method |
CN103171241A (en) * | 2011-12-20 | 2013-06-26 | 上海运申制版模具有限公司 | Screening method for pattern edge with engraved edge |
CN108248200A (en) * | 2016-12-29 | 2018-07-06 | 上海运安制版有限公司 | A kind of roller and its preparation process for ceramic tile printing |
-
1998
- 1998-01-08 JP JP1504398A patent/JP3770722B2/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004167702A (en) * | 2002-11-15 | 2004-06-17 | Kyodo Printing Co Ltd | Gravure printing method and printed matter |
JP4605982B2 (en) * | 2002-11-15 | 2011-01-05 | 共同印刷株式会社 | Gravure printing method and printed matter |
JP2009255410A (en) * | 2008-04-17 | 2009-11-05 | Dainippon Screen Mfg Co Ltd | Method of forming half tone dot image, method of forming threshold value matrix, threshold value matrix, method of manufacturing printing plate and printing plate |
CN103171243A (en) * | 2011-12-20 | 2013-06-26 | 上海运申制版模具有限公司 | Laser version character net-point processing method |
CN103171241A (en) * | 2011-12-20 | 2013-06-26 | 上海运申制版模具有限公司 | Screening method for pattern edge with engraved edge |
CN108248200A (en) * | 2016-12-29 | 2018-07-06 | 上海运安制版有限公司 | A kind of roller and its preparation process for ceramic tile printing |
Also Published As
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---|---|
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