JP2002178654A - Relief-printing plate and plate making method - Google Patents
Relief-printing plate and plate making methodInfo
- Publication number
- JP2002178654A JP2002178654A JP2000378802A JP2000378802A JP2002178654A JP 2002178654 A JP2002178654 A JP 2002178654A JP 2000378802 A JP2000378802 A JP 2000378802A JP 2000378802 A JP2000378802 A JP 2000378802A JP 2002178654 A JP2002178654 A JP 2002178654A
- Authority
- JP
- Japan
- Prior art keywords
- printing plate
- ink
- image
- making
- plate
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/12—Printing plates or foils; Materials therefor non-metallic other than stone, e.g. printing plates or foils comprising inorganic materials in an organic matrix
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、フレキソ印刷など
の凸版印刷に好適に使用することができる凸版印刷版と
その製版方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relief printing plate which can be suitably used for relief printing such as flexographic printing and a method for making the same.
【０００２】[0002]
【従来の技術】図７は、凸版印刷に使用する凸版印刷版
を示す図である。従来より、凸状の画線部１１にインキ
Ｔを付着し印刷基材に押圧転写する凸版印刷版１０を使
用する凸版印刷が、広く普及している。このような凸版
印刷の代表例としては、フレキソ印刷がある。このフレ
キソ印刷に使用する印刷版の材質は、現在、感光性樹脂
が一般的である。2. Description of the Related Art FIG. 7 shows a relief printing plate used for relief printing. Heretofore, letterpress printing using letterpress printing plates 10 in which ink T is attached to convex image portions 11 and pressed and transferred to a printing substrate has been widely used. A typical example of such relief printing is flexographic printing. The material of the printing plate used for the flexographic printing is generally a photosensitive resin at present.
【０００３】図８は、フレキソ印刷装置の一般的な形態
を示す図であり、図９は、インキ付着時のフレキソ印刷
版の画線部を拡大した図である。フレキソ印刷装置５０
は、インキ槽５１と、ファウンテンローラ５２と、アニ
ロックスローラ５３と、版胴５４と、圧胴５５とを備
え、版胴５４は、フレキソ印刷版１０を装着する。イン
キ槽５１に溜められたインキＴを、インキ槽５１に浸漬
されたファウンテンローラ５２で引き上げて、アニロッ
クスローラ５３を介して、版胴５４に装着されたフレキ
ソ印刷版１０に供給する。版胴５４は、所定の圧力で圧
胴５５に押圧されており、圧胴５５と共にフィルム等の
印刷基材Ｐを挟んで印刷を行う。アニロックスローラ５
３には、表面全体に、アニロックス目５３ａといわれる
格子型（立方体）、ピラミッド型（四角錐）等の微小窪
みのマス目が形成されている。アニロックスローラ５３
は、ファウンテンローラ５２から、このアニロックス目
５３ａにインキＴを受け、そのインキＴをフレキソ印刷
版１０に供給する。このとき、アニロックス目５３ａに
溜まるインキＴは、アニロックス目の数（線数）や深さ
等によって定まる一定量になる（図９（Ａ））。そし
て、フレキソ印刷版の画線部１１を接触させた後（図９
（Ｂ））、分離すると、画線部１１に付着するインキＴ
も一定量になる（図９（Ｃ））。このような構造にする
ことで、単純な機構でありながら、供給するインキＴの
定量化、均一化を図ることができる。FIG. 8 is a view showing a general form of a flexographic printing apparatus, and FIG. 9 is an enlarged view of an image portion of a flexographic printing plate when ink is applied. Flexographic printing device 50
Includes an ink tank 51, a fountain roller 52, an anilox roller 53, a plate cylinder 54, and an impression cylinder 55, and the plate cylinder 54 mounts the flexographic printing plate 10. The ink T stored in the ink tank 51 is pulled up by a fountain roller 52 immersed in the ink tank 51, and supplied to the flexographic printing plate 10 mounted on the plate cylinder 54 via the anilox roller 53. The plate cylinder 54 is pressed against the impression cylinder 55 with a predetermined pressure, and performs printing with the impression cylinder 55 via a printing substrate P such as a film. Anilox roller 5
In No. 3, lattices (cubes), pyramids (quadrangular pyramids), or the like of minute depressions called anilox eyes 53a are formed on the entire surface. Anilox roller 53
Receives the ink T from the fountain roller 52 to the anilox eye 53a, and supplies the ink T to the flexographic printing plate 10. At this time, the amount of the ink T accumulated in the anilox eye 53a becomes a constant amount determined by the number (line number), the depth, and the like of the anilox eye (FIG. 9A). Then, after the image portion 11 of the flexographic printing plate is brought into contact (FIG. 9)
(B)), when separated, the ink T adhering to the image area 11
Is also constant (FIG. 9C). With such a structure, quantification and uniformity of the ink T to be supplied can be achieved with a simple mechanism.
【０００４】[0004]
【発明が解決しようとする課題】図１０は、印刷時のフ
レキソ印刷版の画線部を拡大した図であり、図１１は、
従来のフレキソ印刷版の課題を示す図である。従来のフ
レキソ印刷では、画線部１１のインキＴを印刷基材Ｐに
押し付けて転写するため、インキＴを付着した画線部１
１に（図１０（Ａ））、印刷基材Ｐを押し付けて印刷す
ると、押圧によりインキＴが押しつぶされ、画線部周辺
に広がる（図１０（Ｂ））。このように、印圧により印
刷網点の面積の方が印刷版の網点の面積よりも大きくな
ることをドットゲインと呼ぶが、ドットゲインが大きく
なると、よい印刷再現を得ることができない。例えば、
図１１（Ａ）のように、網点面積率５０％で印刷しよう
としても、図１１（Ｂ）のようにインキＴが拡がり隣同
士の網点が繋がってしまう場合があり、階調が飛んで見
えてしまうなど、階調再現性が劣化するおそれがある。FIG. 10 is an enlarged view of an image portion of a flexographic printing plate during printing, and FIG.
It is a figure showing the subject of the conventional flexographic printing plate. In the conventional flexographic printing, since the ink T of the image portion 11 is pressed and transferred onto the printing base material P, the image portion 1 to which the ink T is adhered.
1 (FIG. 10A), when the printing substrate P is pressed and printed, the ink T is crushed by the pressing and spreads around the image area (FIG. 10B). The fact that the area of the printing halftone dot is larger than the area of the printing plate halftone due to the printing pressure is called dot gain. However, if the dot gain is large, good print reproduction cannot be obtained. For example,
Even if an attempt is made to print at a halftone dot area ratio of 50% as shown in FIG. 11A, the ink T may spread and the adjacent halftone dots may be connected as shown in FIG. For example, there is a possibility that the gradation reproducibility is deteriorated.
【０００５】本発明の課題は、ドットゲインを減少さ
せ、階調再現性の劣化を防止する凸版印刷版とその製版
方法を提供することである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a relief printing plate and a method for making the same, which reduce dot gain and prevent deterioration of gradation reproducibility.
【０００６】[0006]
【課題を解決するための手段】本発明は、以下のような
解決手段により、前記課題を解決する。なお、理解を容
易にするために、本発明の実施形態に対応する符号を付
して説明するが、これに限定されるものではない。前記
課題を解決するために、請求項１の発明は、凸状の画線
部（１１）にインキを付着して印刷する凸版印刷版であ
って、印刷時に、前記画線部（１１）の周囲に広がる余
剰インキ（Ｔ）を低減させる余剰インキ低減部（１２）
を備えることを特徴とする凸版印刷版である。The present invention solves the above-mentioned problems by the following means. In addition, in order to make it easy to understand, description is given with reference numerals corresponding to the embodiment of the present invention, but the present invention is not limited to this. In order to solve the above-mentioned problem, the invention according to claim 1 is a letterpress printing plate for printing by attaching ink to a convex image portion (11), and the printing plate is configured to print the image portion (11) at the time of printing. Surplus ink reduction unit (12) for reducing surplus ink (T) spreading around
It is a relief printing plate characterized by having.
【０００７】請求項２の発明は、請求項１に記載の凸版
印刷版において、前記余剰インキ低減部は、前記画線部
（１１）の一部に形成された凹部（１２）であることを
特徴とする凸版印刷版である。According to a second aspect of the present invention, in the relief printing plate according to the first aspect, the excess ink reducing portion is a concave portion (12) formed in a part of the image portion (11). It is a relief printing plate that is a feature.
【０００８】請求項３の発明は、請求項２に記載の凸版
印刷版において、前記凹部（１２）は、前記画線部のほ
ぼ中央付近に形成されていることを特徴とする凸版印刷
版である。According to a third aspect of the present invention, in the relief printing plate according to the second aspect, the concave portion (12) is formed substantially near the center of the image portion. is there.
【０００９】請求項４の発明は、請求項２又は請求項３
に記載の凸版印刷版において、前記凹部（１２）の開口
径は、前記画線部（１１）にインキを供給するインキ供
給手段（５３）が有するインキ保持部（５３ａ）の開口
径より大きいことを特徴とする凸版印刷版である。The invention of claim 4 is the invention of claim 2 or claim 3.
Wherein the opening diameter of the concave portion (12) is larger than the opening diameter of the ink holding portion (53a) of the ink supply means (53) for supplying ink to the image portion (11). Is a letterpress printing plate.
【００１０】請求項５の発明は、請求項１から請求項４
までのいずれか１項に記載の凸版印刷版を製版する凸版
印刷版の製版方法であって、感光性樹脂版材の画線形成
予定部に対して、前記画線部（１１）及び前記凹部（１
２）を形成するための露光部及び遮光部を有するマスク
フィルムでマスキングするマスキング工程を備えること
を特徴とする凸版印刷版の製版方法である。[0010] The invention of claim 5 is the invention of claims 1 to 4.
A method of making a relief printing plate according to any one of the preceding claims, wherein the image portion (11) and the concave portion are formed with respect to a portion of a photosensitive resin plate material to be formed. (1
A method of making a relief printing plate, comprising a masking step of masking with a mask film having an exposure part and a light-shielding part for forming 2).
【００１１】請求項６の発明は、請求項１から請求項４
までのいずれか１項に記載の凸版印刷版を製版する凸版
印刷版の製版方法であって、ＣＴＰフレキソ版材の画線
形成予定部に対して、レーザを照射して、前記画線部
（１１）及び前記凹部（１２）を形成するための露光部
及び遮光部を有するマスク層を形成するマスキング工程
を備えることを特徴とする凸版印刷版の製版方法であ
る。[0011] The invention of claim 6 is the invention of claims 1 to 4.
A plate-making method for letterpress printing plates for making letterpress printing plates according to any one of the preceding claims, wherein a laser is applied to a portion of the CTP flexographic plate material which is to be formed with an image, and the image portion ( 11) and a masking step of forming a mask layer having an exposed portion and a light-shielding portion for forming the concave portion (12).
【００１２】請求項７の発明は、請求項６に記載の凸版
印刷版を製版する凸版印刷版の製版方法であって、前記
マスキング工程は、照射するレーザ出力を変化させて前
記マスク層の厚さを調整することを特徴とする凸版印刷
版の製版方法である。According to a seventh aspect of the present invention, there is provided a method of making a letterpress printing plate for making a letterpress printing plate according to the sixth aspect, wherein the masking step comprises changing a laser output to be irradiated to change the thickness of the mask layer. This is a plate making method for letterpress printing plates, characterized by adjusting the height.
【００１３】[0013]
【発明の実施の形態】以下、図面等を参照して、本発明
の実施の形態について、さらに詳しく説明する。図１
は、本発明によるフレキソ印刷版の画線部の１つを拡大
した斜視図である。なお、前述した従来例と同様の機能
を果たす部分には、同一の符号を付して、重複する説明
を適宜省略する。本発明におけるフレキソ印刷版１０
は、インキを付着する画線部１１の表面に微少な窪み１
２を形成する。Embodiments of the present invention will be described below in more detail with reference to the drawings. FIG.
1 is an enlarged perspective view of one of the image portions of a flexographic printing plate according to the present invention. Note that the same reference numerals are given to portions that perform the same functions as those of the above-described conventional example, and redundant description will be omitted as appropriate. Flexographic printing plate 10 of the present invention
Is a small dent 1 on the surface of the image area 11 to which ink is attached.
Form 2
【００１４】フレキソ印刷版１０は、例えば、以下の方
法で製版することができる。 （１）通常の感光性樹脂版における製版方法 通常の感光性樹脂材を版材とし、中央部分に微小な非画
線形成部を有する網点により再現されたフィルムでマス
キングする（マスキング工程）。なお、このフィルム
は、画線部を露光し、中央部分の非画線部を遮光して、
凸版印刷版の網点を形成するものであっても、画線部を
遮光し、中央部分の非画線部を露光して、凸版印刷版の
網点を形成するものであってもよく、その後の製版工程
に応じて使い分ければよい。そして、通常の露光工程、
現像工程、乾燥工程を通じて製版を行い、画線部１１の
中央に窪み１２を有する樹脂製のフレキソ印刷版１０を
製版する。The flexographic printing plate 10 can be made, for example, by the following method. (1) Plate making method in a normal photosensitive resin plate A normal photosensitive resin material is used as a plate material, and masking is performed with a film reproduced by a halftone dot having a minute non-image forming portion in the center (masking step). In addition, this film exposes the image area, shades the non-image area in the center,
Even those that form the halftone dots of the letterpress printing plate, may shield the image area and expose the non-image part of the central part to form halftone dots of the letterpress printing plate, What is necessary is just to use properly according to the subsequent plate making process. And the normal exposure process,
Plate making is performed through a developing step and a drying step, and a resin-made flexographic printing plate 10 having a depression 12 in the center of an image area 11 is made.
【００１５】（２）ＣＴＰフレキソ印刷版における、第
１製版方法 ＣＴＰ（Ｃｏｍｐｕｔｅｒ Ｔｏ Ｐｌａｔｅ）とは、
フィルムを用いることなく、レーザで版材にマスク層
を、直接、描画して製版する方法であるが、この場合
は、ＣＴＰフレキソ版材に対して、レーザを照射して、
中央部分に微小な非画線形成部を有するマスク層を描画
する（マスキング工程）。なお、このマスク層も、画線
部を露光し、中央部分の非画線部を遮光して、凸版印刷
版の網点を形成するものであっても、画線部を遮光し、
中央部分の非画線部を露光して、凸版印刷版の網点を形
成するものであってもよく、その後の製版工程に応じて
使い分ければよい。そして、通常の露光工程、現像工
程、乾燥工程を通じて製版を行い、画線部１１の中央に
窪み１２を有するフレキソ印刷版１０を製版する。(2) First plate making method for CTP flexographic printing plate CTP (Computer To Plate)
It is a method of making a plate by directly drawing a mask layer on a plate material using a laser without using a film. In this case, the CTP flexographic plate material is irradiated with a laser,
A mask layer having a minute non-image forming portion in a central portion is drawn (masking step). In addition, this mask layer also exposes the image area, shields the non-image area in the central part from light, and forms a halftone dot of the letterpress printing plate.
The halftone dot of the relief printing plate may be formed by exposing the non-image portion at the center portion, and may be used properly according to the subsequent plate making process. Then, plate making is performed through a normal exposure step, development step, and drying step, and a flexographic printing plate 10 having a depression 12 in the center of the image portion 11 is made.
【００１６】（３）ＣＴＰフレキソ印刷版における、第
２製版方法 ＣＴＰフレキソ印刷版のマスク描画時に、レーザー出力
を変化させて、画線部中央部分におけるマスク層除去量
を調整し、その後の露光工程での光透過量を減少させ
る。そして、通常の露光工程、現像工程、乾燥工程を通
じて製版を行い、画線部の中央に窪みを有するフレキソ
印刷版を製版する。このようにすることによって、マス
ク層の厚さを調整することができるので、画線部中央の
窪み１２の深さを調整することができる。(3) Second plate making method in CTP flexographic printing plate At the time of drawing a mask on the CTP flexographic printing plate, the laser output is changed to adjust the removal amount of the mask layer in the central portion of the image area, and the subsequent exposure step To reduce the amount of light transmission. Then, plate making is performed through a normal exposure step, developing step, and drying step, and a flexographic printing plate having a depression in the center of the image area is made. By doing so, the thickness of the mask layer can be adjusted, so that the depth of the depression 12 at the center of the image area can be adjusted.
【００１７】図２は、インキ付着時のフレキソ印刷版の
画線部を拡大した図であり、図３は、印刷時のフレキソ
印刷版の画線部を拡大した図である。フレキソ印刷版
は、一般的な印刷装置を使用して、以下のように印刷す
る。すなわち、アニロックス目５３ａには、一定量のイ
ンキＴが溜まるが（図２（Ａ））、フレキソ印刷版の画
線部１１を接触させた後（図２（Ｂ））、分離すると、
画線部の窪み以外の部分１１にインキＴが付着し、窪み
１２には、インキＴが付着しない（図２（Ｃ））。そし
て、このように、インキＴの付着した状態で（図３
（Ａ））、印刷基材Ｐを押し付けて印刷すると、押圧に
よりインキＴが拡がり、余剰インキは、画線部の窪み１
２に入り込み、画線部周辺へは拡がりは少なくなる（図
３（Ｂ））。FIG. 2 is an enlarged view of the image portion of the flexographic printing plate when ink is applied, and FIG. 3 is an enlarged view of the image portion of the flexographic printing plate during printing. The flexographic printing plate is printed using a general printing device as follows. That is, although a certain amount of the ink T is accumulated in the anilox eye 53a (FIG. 2A), after the image portion 11 of the flexographic printing plate is brought into contact (FIG. 2B),
The ink T adheres to the portion 11 other than the depression of the image portion, and the ink T does not adhere to the depression 12 (FIG. 2C). Then, in the state where the ink T is adhered as described above (FIG. 3).
(A)), when the printing is performed by pressing the printing base material P, the ink T is spread by the pressing, and the excess ink is depressed in the depression 1 in the image area.
2 and the spread around the image area is reduced (FIG. 3B).
【００１８】なお、画線部に形成する窪み１２の大きさ
が、アニロックス目５３ａの大きさよりも小さいと、ア
ニロックス目５３ａから供給されるインキＴが窪み１２
を跨いで塞いでしまう可能性があるので、窪み１２の大
きさは、アニロックス目５３ａの大きさよりも、大きい
ことが望ましい。If the size of the depression 12 formed in the image area is smaller than the size of the anilox eye 53a, the ink T supplied from the anilox eye 53a will not be used.
It is desirable that the size of the depression 12 is larger than the size of the anilox eye 53a because there is a possibility that the depression 12 may be closed.
【００１９】本実施形態によれば、画線部１１に窪み１
２を設けることにより、転写時のドットゲインを低減さ
せることができ、これにより、以下のような効果を得る
ことができる。なお、本実施形態のように、画線部１１
の中央付近に窪み１２を設ければ、インキＴの拡がりを
全体的に均等に低減させることができるので、特に、効
果が大きい。According to the present embodiment, the depression 1
By providing 2, the dot gain at the time of transfer can be reduced, whereby the following effects can be obtained. Note that, as in the present embodiment, the image area 11
If the depressions 12 are provided in the vicinity of the center, the spread of the ink T can be uniformly reduced as a whole, so that the effect is particularly large.
【００２０】（１）階調性向上 図４は、従来技術及び本実施形態の階調性を比較する線
図であり、横軸に網点面積率、縦軸に印刷濃度をとる。
図４に示すように、本実施形態のほうが、網点面積率を
変化させたときの印刷濃度の変化が少ない。このため、
従来のフレキソ印刷に比較して、階調を滑らかに再現す
ることができる。このように、ドットゲイン軽減によ
り、版画線部の大きさに忠実な網点サイズにインキを転
写することができ、階調を滑らかに再現することができ
る。(1) Improvement of Gradation FIG. 4 is a diagram comparing the gradation of the prior art and the present embodiment, wherein the horizontal axis represents the dot area ratio and the vertical axis represents the print density.
As shown in FIG. 4, in the present embodiment, the change in the print density when the dot area ratio is changed is smaller. For this reason,
The gradation can be reproduced more smoothly than in conventional flexographic printing. In this way, by reducing the dot gain, the ink can be transferred to a halftone dot size that is faithful to the size of the printing line portion, and the gradation can be smoothly reproduced.
【００２１】（２）ハイライト再現性向上（再現可能な
濃度範囲拡大） 図５は、従来技術及び本実施形態のハイライト再現性を
比較する図であり、印刷物ハイライトの拡大図である。
図５に示すように、従来はドットゲインにより網点が太
っていたが（図５（Ａ））、本実施形態ではドットゲイ
ンが少なく正確な網点を再現することができる（図５
（Ｂ））。このため、従来のフレキソ印刷に比較して、
再現可能な最低濃度を低く押さえることができる。この
ように、ドットゲイン軽減により、より微小な網点再現
が可能となり、最低濃度を低くすることができ、再現可
能な濃度範囲拡大することができる。(2) Improvement of Highlight Reproducibility (Enlargement of Reproducible Density Range) FIG. 5 is a diagram for comparing highlight reproducibility between the prior art and the present embodiment, and is an enlarged view of a highlight of a printed material.
As shown in FIG. 5, conventionally, the halftone dot is thickened by the dot gain (FIG. 5A). However, in the present embodiment, an accurate halftone dot with a small dot gain can be reproduced (FIG. 5).
(B)). For this reason, compared to conventional flexographic printing,
The lowest reproducible density can be kept low. As described above, by reducing the dot gain, finer halftone dots can be reproduced, the minimum density can be reduced, and the reproducible density range can be expanded.
【００２２】（３）解像性向上 図６は、従来印刷及び本実施形態の解像性を比較する図
であり、印刷物細線の拡大図である。図６に示すよう
に、従来はドットゲインにより細線のツブレが発生して
いたが（図６（Ａ））、本実施形態では、そのようなツ
ブレを防止することができる（図６（Ｂ））。このよう
に、ドットゲイン軽減により、（抜き）細線の再現を向
上させることができ、また、例えば、「鷹」「薔薇」と
いった、線が密集している文字のツブレ等も、防止する
ことができる。(3) Improvement of Resolution FIG. 6 is a diagram for comparing the resolution of conventional printing and the present embodiment, and is an enlarged view of a printed thin line. As shown in FIG. 6, in the related art, thin lines have been blurred due to dot gain (FIG. 6A), but in the present embodiment, such blurs can be prevented (FIG. 6B). ). In this way, by reducing the dot gain, it is possible to improve the reproduction of (extracted) fine lines, and it is also possible to prevent, for example, blurring of characters with dense lines such as "hawk" and "rose". it can.
【００２３】（変形形態）以上説明した実施形態に限定
されることなく、種々の変形や変更が可能であって、そ
れらも本発明の均等の範囲内である。例えば、本発明に
おける凸版印刷版１０は、インキＴを付着する画線部１
１に窪み１２が形成されていることが特徴であり、窪み
１２の形状や数、製版方法に限定されるものではない。
また、上記実施形態では、画線部１１の中央に窪み１２
を設けたが、それに限定されず、画線部１１のいずれか
一部分に設ければ、同様に、ドットゲインを減少させる
ことが可能である。さらに、上記実施形態では、凸版印
刷として、フレキソ印刷を例に挙げて説明したが、他の
凸版印刷についても、同様に実施可能である。(Modifications) Various modifications and changes are possible without being limited to the embodiment described above, and these are also within the equivalent scope of the present invention. For example, the relief printing plate 10 according to the present invention has an image area 1 to which ink T is attached.
1 is characterized in that the depressions 12 are formed, and the shape and number of the depressions 12 and the plate making method are not limited.
In the above embodiment, the hollow 12
Is provided, but the invention is not limited to this. If it is provided in any part of the image portion 11, the dot gain can be similarly reduced. Further, in the above embodiment, flexographic printing has been described as an example of letterpress printing, but other letterpress printing can be similarly performed.
【００２４】[0024]
【発明の効果】以上詳しく説明したように、請求項１の
発明によれば、印刷時に、画線部周囲に広がる余剰イン
キを低減させる余剰インキ低減部を備えるので、ドット
ゲインを低減させることができる。As described above in detail, according to the first aspect of the present invention, since the surplus ink reducing section for reducing the surplus ink spreading around the image area at the time of printing is provided, the dot gain can be reduced. it can.
【００２５】請求項２の発明によれば、余剰インキ低減
部は、画線部の一部に形成された凹部であるので、容易
に形成することができる。According to the second aspect of the present invention, since the surplus ink reducing portion is a concave portion formed in a part of the image portion, it can be easily formed.
【００２６】請求項３の発明によれば、凹部は、画線部
のほぼ中央付近に形成されている余剰インキの拡がりを
全体的に均等に低減させることができる。According to the third aspect of the present invention, the concave portion can uniformly reduce the spread of the excess ink formed substantially near the center of the image portion.
【００２７】請求項４の発明によれば、凹部の開口径
は、画線部にインキを供給するインキ供給手段が有する
インキ保持部の開口径より大きいので、確実に、余剰イ
ンキを低減させることができる。According to the fourth aspect of the present invention, since the opening diameter of the concave portion is larger than the opening diameter of the ink holding portion of the ink supply means for supplying ink to the image portion, it is possible to surely reduce excess ink. Can be.
【００２８】請求項５の発明によれば、感光性樹脂版材
の画線形成予定部に対して、マスクフィルムでマスキン
グするので、簡単に、製版することができる。According to the fifth aspect of the present invention, masking is performed on the portion of the photosensitive resin plate material on which the image is to be formed with the mask film, so that plate making can be performed easily.
【００２９】請求項６の発明によれば、レーザを照射し
て、マスク層を形成するので、短時間で、製版すること
ができる。According to the sixth aspect of the present invention, since the mask layer is formed by irradiating a laser, plate making can be performed in a short time.
【００３０】請求項７の発明によれば、照射するレーザ
出力を変化させてマスク層の厚さを調整するので、画線
部の凹部の深さを調整することができる。According to the seventh aspect of the present invention, since the thickness of the mask layer is adjusted by changing the laser output for irradiation, the depth of the concave portion in the image portion can be adjusted.
【図１】本発明によるフレキソ印刷版の画線部の１つを
拡大した斜視図である。FIG. 1 is an enlarged perspective view of one of the image portions of a flexographic printing plate according to the present invention.
【図２】インキ付着時のフレキソ印刷版の画線部を拡大
した図である。FIG. 2 is an enlarged view of an image area of a flexographic printing plate when ink is attached.
【図３】印刷時のフレキソ印刷版の画線部を拡大した図
である。FIG. 3 is an enlarged view of an image area of a flexographic printing plate during printing.
【図４】従来技術及び本実施形態の階調性を比較する線
図である。FIG. 4 is a diagram comparing the gradation characteristics of a conventional technique and the present embodiment.
【図５】従来技術及び本実施形態のハイライト再現性を
比較する図である。FIG. 5 is a diagram comparing highlight reproducibility between the prior art and the present embodiment.
【図６】従来印刷及び本実施形態の解像性を比較する図
である。FIG. 6 is a diagram comparing the resolution of conventional printing and the present embodiment.
【図７】凸版印刷に使用する凸版印刷版を示す図であ
る。FIG. 7 is a diagram showing a relief printing plate used for relief printing.
【図８】フレキソ印刷装置の一般的な形態を示す図であ
る。FIG. 8 is a diagram illustrating a general form of a flexographic printing apparatus.
【図９】インキ付着時のフレキソ印刷版の画線部を拡大
した図である。FIG. 9 is an enlarged view of an image area of a flexographic printing plate when ink is attached.
【図１０】印刷時のフレキソ印刷版の画線部を拡大した
図である。FIG. 10 is an enlarged view of an image area of a flexographic printing plate during printing.
【図１１】従来のフレキソ印刷版の課題を示す図であ
る。FIG. 11 is a view showing a problem of a conventional flexographic printing plate.
１０ フレキソ印刷版 １１ 画線部 １２ 窪み ５０ フレキソ印刷装置 ５１ インキ槽 ５２ ファウンテンローラ ５３ アニロックスローラ ５３ａ アニロックス目 ５４ 版胴 ５５ 圧胴 Ｐ 印刷基材 Ｔ インキ DESCRIPTION OF SYMBOLS 10 Flexographic printing plate 11 Image part 12 Depression 50 Flexo printing device 51 Ink tank 52 Fountain roller 53 Anilox roller 53a Anilox eye 54 Plate cylinder 55 Impression cylinder P Printing base material T Ink
Claims (7)
る凸版印刷版であって、 印刷時に、前記画線部の周囲に広がる余剰インキを低減
させる余剰インキ低減部を備えることを特徴とする凸版
印刷版。1. A relief printing plate for printing by attaching ink to a convex image portion, comprising a surplus ink reducing portion for reducing surplus ink spreading around the image portion during printing. Characteristic letterpress printing plate.
た凹部であることを特徴とする凸版印刷版。2. The relief printing plate according to claim 1, wherein the excess ink reducing portion is a concave portion formed in a part of the image portion.
ることを特徴とする凸版印刷版。3. The relief printing plate according to claim 2, wherein the concave portion is formed substantially near the center of the image portion.
版において、 前記凹部の開口径は、前記画線部にインキを供給するイ
ンキ供給手段が有するインキ保持部の開口径より大きい
ことを特徴とする凸版印刷版。4. The relief printing plate according to claim 2, wherein an opening diameter of the recess is larger than an opening diameter of an ink holding unit provided in an ink supply unit that supplies ink to the image area. Letterpress printing plate characterized by the above.
項に記載の凸版印刷版を製版する凸版印刷版の製版方法
であって、 感光性樹脂版材の画線形成予定部に対して、前記画線部
及び前記凹部を形成するための露光部及び遮光部を有す
るマスクフィルムでマスキングするマスキング工程を備
えることを特徴とする凸版印刷版の製版方法。5. The method according to claim 1, wherein:
It is a letterpress printing plate making method for making a letterpress printing plate according to the paragraph, for an image forming scheduled portion of a photosensitive resin plate material, an exposure portion for forming the image portion and the concave portion and A method for making a relief printing plate, comprising a masking step of masking with a mask film having a light-shielding portion.
項に記載の凸版印刷版を製版する凸版印刷版の製版方法
であって、 ＣＴＰフレキソ版材の画線形成予定部に対して、レーザ
を照射して、前記画線部及び前記凹部を形成するための
露光部及び遮光部を有するマスク層を形成するマスキン
グ工程を備えることを特徴とする凸版印刷版の製版方
法。6. One of claims 1 to 4
A plate making method for making a relief printing plate as described in the paragraph, wherein the object is to be formed on a CTP flexographic plate material by irradiating a laser to form the image part and the concave part. A masking step of forming a mask layer having an exposed portion and a light-shielding portion for forming a relief printing plate.
凸版印刷版の製版方法であって、 前記マスキング工程は、照射するレーザ出力を変化させ
て前記マスク層の厚さを調整することを特徴とする凸版
印刷版の製版方法。7. A method for making a relief printing plate according to claim 6, wherein the masking step comprises adjusting a thickness of the mask layer by changing an irradiation laser output. A method of making a letterpress printing plate, characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000378802A JP4689034B2 (en) | 2000-12-13 | 2000-12-13 | Printing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000378802A JP4689034B2 (en) | 2000-12-13 | 2000-12-13 | Printing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002178654A true JP2002178654A (en) | 2002-06-26 |
| JP4689034B2 JP4689034B2 (en) | 2011-05-25 |
Family
ID=18847301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000378802A Expired - Fee Related JP4689034B2 (en) | 2000-12-13 | 2000-12-13 | Printing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4689034B2 (en) |
Cited By (8)
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|---|---|---|---|---|
| US6915759B2 (en) | 2002-07-31 | 2005-07-12 | Denso Corporation | Printing apparatus and method for spark plug insulator |
| EP2572890A1 (en) | 2011-09-26 | 2013-03-27 | Fujifilm Corporation | Relief printing plate |
| EP2572883A2 (en) | 2011-09-26 | 2013-03-27 | Fujifilm Corporation | Relief printing plate manufacturing method, relief printing plate creating apparatus, and computer program product |
| WO2015078550A1 (en) * | 2013-11-27 | 2015-06-04 | Merck Patent Gmbh | Rotary printing method |
| WO2016020034A1 (en) * | 2014-08-05 | 2016-02-11 | Merck Patent Gmbh | Printing method |
| JP2018538182A (en) * | 2015-12-23 | 2018-12-27 | ザイコン プリプレス エヌ．ブイ．Ｘｅｉｋｏｎ Ｐｒｅｐｒｅｓｓ Ｎ．Ｖ． | Improved flexographic printing |
| US10675902B2 (en) * | 2015-10-21 | 2020-06-09 | Japan Aviation Electronics Industry, Limited | Insulator film formation method by flexographic printing and flexographic printing plate |
| DE102021128652A1 (en) | 2021-11-03 | 2023-05-04 | Ardagh Metal Packaging Europe Gmbh | Printing plate for dispensing an ink, printing system and method for printing an object |
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| US6915759B2 (en) | 2002-07-31 | 2005-07-12 | Denso Corporation | Printing apparatus and method for spark plug insulator |
| EP2572890A1 (en) | 2011-09-26 | 2013-03-27 | Fujifilm Corporation | Relief printing plate |
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| JP2018538182A (en) * | 2015-12-23 | 2018-12-27 | ザイコン プリプレス エヌ．ブイ．Ｘｅｉｋｏｎ Ｐｒｅｐｒｅｓｓ Ｎ．Ｖ． | Improved flexographic printing |
| DE102021128652A1 (en) | 2021-11-03 | 2023-05-04 | Ardagh Metal Packaging Europe Gmbh | Printing plate for dispensing an ink, printing system and method for printing an object |
| DE102021128652B4 (en) | 2021-11-03 | 2024-01-18 | Ardagh Metal Packaging Europe Gmbh | Printing system and method for printing an object |
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