JP2019155632A - Gravure printing plate - Google Patents
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Abstract
Description
本発明は、グラビア印刷版に関し、特にピンホールやスジ状の印刷欠陥を抑制できるグラビア印刷版に関する。 The present invention relates to a gravure printing plate, and more particularly to a gravure printing plate that can suppress pinholes and streak-like printing defects.
グラビア印刷法は、版胴に印刷インキを充填するためのセルと呼ばれる微小な凹部を多数設け、セルのサイズ（面積及び深さ）を変化させることにより充填されるインク量を変えることで、紙やフィルムなどの被印刷媒体に印刷する絵柄等に応じた量のインクを転移して所望の印刷物を得るものである。版胴にセルを形成する方法は薬品による腐食法と、機械的な彫刻法が代表的なものとして知られている。 In the gravure printing method, a large number of minute concave portions called cells for filling printing ink are provided in the plate cylinder, and the amount of ink to be filled is changed by changing the size (area and depth) of the cells. A desired printed matter is obtained by transferring an amount of ink corresponding to a pattern to be printed on a printing medium such as a film or a film. Typical methods for forming cells in a plate cylinder are chemical corrosion and mechanical engraving.
版胴の形状は様々であるが、円筒状のものとするときは、外周面に上記のセルを多数形成し、円筒の軸を中心に回転させながら印刷インキを貯留させたインキパンに漬け、インキをセルに充填して余分なインキをドクターブレードで掻き取った後、被印刷媒体に圧接してインキを転移させ印刷を行う。このとき図６に示す様に、版胴５の回転による空気の巻き込み、インキパン中でのインキの流動、ドクターブレードでの掻き取りムラなど様々な要因で、セル５０中のインキ５７に気泡５３が発生する、セル５０中のインキ面の不均一５４が生じるといった現象が、特に印刷速度が高速化するに従い起こり易くなり、インキ５７が被印刷媒体５２に転移されると流動してインク膜５８を形成するところ、気泡５３や不均一５４が非印刷媒体５２にそのまま転移してピンホール５５、塗工抜け５６などの印刷欠陥となることがあった。 The shape of the plate cylinder varies, but when it is cylindrical, a large number of the above-mentioned cells are formed on the outer peripheral surface and immersed in an ink pan in which printing ink is stored while rotating around the axis of the cylinder. After the cell is filled and excess ink is scraped off with a doctor blade, the ink is transferred to the printing medium by pressure contact, and printing is performed. At this time, as shown in FIG. 6, bubbles 53 are formed in the ink 57 in the cell 50 due to various factors such as air entrainment caused by the rotation of the plate cylinder 5, ink flow in the ink pan, and scraping unevenness with the doctor blade. The phenomenon that the nonuniformity 54 of the ink surface in the cell 50 is generated is more likely to occur especially as the printing speed is increased. When the ink 57 is transferred to the printing medium 52, the phenomenon occurs. When formed, the bubbles 53 and the non-uniformity 54 may be transferred to the non-printing medium 52 as they are, resulting in printing defects such as pinholes 55 and coating defects 56.
またセルを彫刻法で形成する場合は、円筒状の版胴を回転させながら外周面を彫刻してセルを形成するため、図７に示す様に、版胴の回転方向に沿ってセル６１の部分とくびれ６２の部分が交互に連続する形状となり、回転方向に直交する方向に隣接する部位ではセル６１とくびれ６２が逆の位置関係となって同様に連続する形状となる。くびれ６２の部位はセル６１の彫刻が浅く小さい場合は全く彫刻されないが、セル６１が深く大きい場合は彫刻されない部分が無くなり、回転方向の次のセルと、図６における右端のセルと隣接するセルのようにほぼ繋がった状態となることがある。 Further, when the cell is formed by engraving, the cell is formed by engraving the outer peripheral surface while rotating the cylindrical plate cylinder. Therefore, as shown in FIG. The portion and the constriction 62 are alternately continuous, and the cell 61 and the constriction 62 are in the opposite positional relationship and are similarly continuous in a portion adjacent to the direction orthogonal to the rotation direction. The constricted part 62 is not engraved at all when the cell 61 is shallow and small, but when the cell 61 is deep and large, there is no unengraved part, and the next cell in the rotation direction and the cell adjacent to the rightmost cell in FIG. It may be almost connected like
この様な印刷版で印刷を行ったとき、インキに気泡６３が発生すると、版胴の回転に伴って軽い気泡がセルからセルへと移動し、それがスジ状の印刷欠陥（以下単に「スジ」ともいう）として被印刷媒体に現れることがある。またセルからセルに移動する過程で他の気泡６３と合体して大きく合体した気泡６５となって大きな塗工抜けとなることがあった。 When printing with such a printing plate, if bubbles 63 are generated in the ink, the light bubbles move from cell to cell as the plate cylinder rotates, causing streak-like printing defects (hereinafter simply referred to as “streaks”). May also appear on the print medium. Further, in the process of moving from cell to cell, there was a case where bubbles 65 merged with other bubbles 63 and largely merged, resulting in large coating omission.
そのため従来から、これらの印刷欠陥が発生し難いグラビア印刷版や印刷装置が提案され、例えば特許文献１には、インクが充填される凹部を有し、該凹部から面内方向に気泡を排出する中空状の気泡排出路を備えた印刷用版が開示され、気泡に起因する印刷工程への影響を低減した印刷用版を提供できるとしている。 Therefore, conventionally, a gravure printing plate and a printing apparatus in which these printing defects are unlikely to occur have been proposed. For example, Patent Document 1 has a recess filled with ink, and discharges bubbles from the recess in an in-plane direction. A printing plate having a hollow bubble discharge path is disclosed, and a printing plate with reduced influence on the printing process caused by bubbles can be provided.
また、特許文献２には、インク充填部となる多数の四角形状凹部を隔てる縦方向及び横方向の隔壁のうち、縦方向の隔壁、すなわちドクターブレードによる印刷材料の掻き取り方向となるロール略円周方向の隔壁を、直線状に連続して配列しないことによって、ピンホールの発生がなく、また印刷物の外周縁の直線精度が良い印刷物が得られるとするグラビア印刷用版が開示されている。 Further, in Patent Document 2, among the vertical and horizontal partition walls that separate a large number of quadrilateral concave portions that serve as ink filling portions, a vertical partition wall, that is, a roll substantially circular that serves as a scraping direction of the printing material by a doctor blade. A gravure printing plate is disclosed in which a printed matter with no occurrence of pinholes and good linear accuracy at the outer peripheral edge of the printed matter is obtained by not arranging the circumferential partition walls in a straight line.
しかしながら特許文献１に開示されている印刷用版は、印刷用版の内部に、各凹部を連結する気泡排出路をトンネル状に設けるなど、非常に複雑な構造となっており、作成が困難である。特に印刷版が円筒状である場合は一層作成が困難であり、実用的ではなかった。 However, the printing plate disclosed in Patent Document 1 has a very complicated structure such as a bubble discharge path that connects the recesses inside the printing plate, and is difficult to produce. is there. In particular, when the printing plate has a cylindrical shape, it is difficult to make more and it is not practical.
また特許文献２に開示されたグラビア印刷版は、比較的流動性が低いペースト状インクであれば効果があるが、流動性の高い一般的なグラビアインキで発生する凹部（セル）内でのインキ面の変形や気泡によるピンホールやスジ、塗工抜けなどの発生に対しては効果が薄かった。特に印刷が高速化してくると、セルが独立している構造ではインクのレベリングの過程での気泡やインキ面の変形の解消が十分には行えないという問題があった。 In addition, the gravure printing plate disclosed in Patent Document 2 is effective if it is a paste-like ink having relatively low fluidity, but ink in a recess (cell) generated by general gravure ink having high fluidity. The effect was weak against the occurrence of pinholes and streaks due to surface deformation, bubbles, and missing coating. In particular, when the printing speed is increased, there is a problem that bubbles and ink surface deformation cannot be sufficiently eliminated in the process of ink leveling in a structure in which cells are independent.
本発明は上記の様な従来技術の問題点を解決するためになされたもので、セル内でのインキ面の変形や気泡によるピンホールやスジ、塗工抜けなどの印刷欠陥の生じ難いグラビア印刷版を提供することを課題とする。 The present invention was made in order to solve the above-mentioned problems of the prior art, and gravure printing in which printing defects such as pinholes, streaks and coating omission due to deformation of the ink surface in the cell and bubbles are not likely to occur. The issue is to provide a version.
上記課題を解決するため、本発明の請求項１に係る発明は、
インキが充填可能な微小な凹部であるセルが表面に複数形成された版胴からなるグラビア印刷版であって、各前記セルの間に平坦かつ直線状の境界部を有し、前記境界部の一部が切欠かれて欠部とされ、前記欠部は前記境界部の両端部のうちの一方の端部に設けられ、かつ互いに対向する境界部の欠部は互いに反対側の端部に設けられていることを特徴とするグラビア印刷版である。
In order to solve the above problems, the invention according to claim 1 of the present invention provides:
A gravure printing plate comprising a plate cylinder formed with a plurality of cells, which are minute recesses that can be filled with ink, having a flat and linear boundary between each of the cells. A part is cut out to form a notch, the notch is provided at one end of both ends of the boundary, and the notch of the boundary facing each other is provided at the opposite end. It is a gravure printing plate characterized by being made.
また、本発明の請求項２に係る発明は、
前記セルにインキが充填されたとき、前記欠部を通じて各セルのインキが連通することを特徴とする請求項１に記載のグラビア印刷版である。
The invention according to claim 2 of the present invention is
2. The gravure printing plate according to claim 1, wherein when the cell is filled with ink, the ink of each cell communicates through the notch.
また本発明の請求項３に記載の発明は、
前記セルが、三角形、四角形、または六角形のいずれかであることを特徴とする請求項１または２に記載のグラビア印刷版である。
The invention according to claim 3 of the present invention provides
The gravure printing plate according to claim 1, wherein the cell is any one of a triangle, a quadrangle, and a hexagon.
また、本発明の請求項４に係る発明は、
前記版胴が円筒状であって、前記境界部は、前記版胴の筒軸方向に対して斜行していることを特徴とする請求項１から３のいずれかに記載のグラビア印刷版である。
The invention according to claim 4 of the present invention is
The gravure printing plate according to any one of claims 1 to 3, wherein the plate cylinder is cylindrical, and the boundary portion is inclined with respect to a cylinder axis direction of the plate cylinder. is there.
本発明の請求項１に記載の発明によれば、セルとセルの間に設けられた境界部が一部で切り欠かれて欠部とされることで、セル中のインキ液面が変動したときに欠部を通じて隣接するセルからインキを流入または流出させることができ、インキ液面の変動が抑制され、インキ液面の変動による塗工抜けの発生を抑制することができる。またインキ中に気泡が発生した場合、対向する境界部の欠部が互いに反対側の端部に設けられていることで一直線上に並んでいないため、気泡がセルからセルへと移動し難く、スジが発生し難い。 According to the invention described in claim 1 of the present invention, the ink liquid level in the cell fluctuates because the boundary portion provided between the cells is partly cut out to be a missing portion. Occasionally, the ink can be allowed to flow in or out from the adjacent cell through the notch, so that the fluctuation of the ink liquid level can be suppressed and the occurrence of coating omission due to the fluctuation of the ink liquid level can be suppressed. In addition, when bubbles are generated in the ink, since the lacking portions of the opposing boundary portions are not arranged in a straight line by being provided at the opposite ends, the bubbles are difficult to move from cell to cell, No streak is likely to occur.
また請求項２に記載の発明によれば、セルにインキが充填されたときに欠部によりインキが連通するため、インキが版胴の表面を覆う比率が増えて塗工抜けが発生し難く、インキ液面の変動もより効果的に抑制することができる。 Further, according to the invention of claim 2, since the ink communicates by the notch when the ink is filled in the cell, the ratio of the ink covering the surface of the plate cylinder is increased, and the coating omission is difficult to occur. Variations in the ink level can also be more effectively suppressed.
また請求項３に記載の発明によれば、同じ形状のセルで版胴の表面を覆うことができ、部分的な塗工ムラが発生し難いグラビア印刷版を得ることができる。 According to the invention described in claim 3, the surface of the plate cylinder can be covered with cells having the same shape, and a gravure printing plate in which partial coating unevenness hardly occurs can be obtained.
また請求項４に記載の発明によれば、版胴が円筒状で、円筒の筒軸を回転軸として回転させながら印刷が行えるグラビア印刷版となり、境界部が筒軸に対して斜行していることにより、気泡の版胴の回転方向への移動を遮ることによりスジの発生を抑制できる。 According to a fourth aspect of the present invention, the plate cylinder is cylindrical, and the gravure printing plate can be printed while being rotated about the cylinder axis of the cylinder, and the boundary portion is inclined with respect to the cylinder axis. As a result, the generation of streaks can be suppressed by blocking the movement of the bubbles in the rotational direction of the plate cylinder.
以下、本発明の実施の形態を、図面を参照しながら詳細に説明する。なお本発明は以下に説明する実施形態に限定されるものではない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below.
図１は、本発明のグラビア印刷版の一実施形態の版面の模式図である。グラビア印刷版（以下単に「印刷版」ともいう）１は、版胴の表面に矩形状をなす凹部であるセル１０が表面に対して平坦な境界部１１に囲まれて多数並んで形成されている。セル１０は印刷インキを充填するために掘り込まれた凹部である。凹部を形成する方法としては、特に限定するものではないが、薬品により版胴の表面をエッチングして凹部を設ける腐食法が好ましく適用できる。 FIG. 1 is a schematic view of a printing plate of an embodiment of the gravure printing plate of the present invention. A gravure printing plate (hereinafter, also simply referred to as “printing plate”) 1 is formed by arranging a large number of cells 10, which are rectangular recesses, on a surface of a plate cylinder, surrounded by a boundary portion 11 that is flat with respect to the surface. Yes. The cell 10 is a recess dug to fill with printing ink. The method of forming the recess is not particularly limited, but a corrosion method in which the recess is formed by etching the surface of the plate cylinder with a chemical is preferably applicable.
図２は、グラビア印刷版１を線分ＡＡ´で切断した断面の一部を矢印方向に見込んだ模式図である。ただし、図１においてはセル１０の大きさは同一であるが、図２においては説明のためセル１０の大きさを変えて図示している。矩形をなす境界部１１の各辺の一方の端部は、図２に示す様に、面方向及び深さ方向の一部で表面側から切り欠かれて欠部１２となっている。また欠部１２が設けられる端部は、互いに対向する境界部において例えば欠部１２ａと欠部１２ｂの様に互いに反対側の端部に設けられている。またセル１０の大きさは図２に例示したように印刷濃度に応じて充填されるインキの量を加減するために部位によって異なっていても良く、その場合はその分境界部１１と欠部１２の幅が加減されて、セル１０が形成されるピッチは同一となっている。 FIG. 2 is a schematic view in which a part of a cross section obtained by cutting the gravure printing plate 1 along a line segment AA ′ is expected in the arrow direction. However, although the size of the cell 10 is the same in FIG. 1, in FIG. 2, the size of the cell 10 is changed for illustration purposes. As shown in FIG. 2, one end portion of each side of the rectangular boundary portion 11 is cut out from the surface side in part in the surface direction and the depth direction to form a notch portion 12. Moreover, the edge part in which the notch part 12 is provided is provided in the edge part on the mutually opposite side like the notch part 12a and the notch part 12b in the boundary part which mutually opposes. In addition, the size of the cell 10 may be different depending on the part in order to increase or decrease the amount of ink filled in accordance with the printing density as illustrated in FIG. The pitch at which the cells 10 are formed is the same.
セル１０の平面形状は図１の様な矩形に限らず、三角形、菱形、六角形などの多角形状であって良い。これらの多角形状は、単一の形状で面を隙間なく埋めることができるため好ましい。なお実際にセルを形成する場合には、各多角形の角の部分が若干丸みを帯びた、いわゆる角丸の状態となることが多いが、それらもここにいう各多角形状に含まれるものである。 The planar shape of the cell 10 is not limited to a rectangle as shown in FIG. 1, but may be a polygonal shape such as a triangle, a rhombus, or a hexagon. These polygonal shapes are preferable because the surface can be filled without gaps with a single shape. When cells are actually formed, the corners of each polygon are often rounded, so-called rounded corners, but these are also included in each polygonal shape here. is there.
セル１０、境界部１１および欠部１２以外の形状は一般的なグラビア印刷版と同等であって良く、例えば版胴の全体形状は平板状でその一表面にセル１０が形成されていても良く、さらに典型的には、全体形状を円筒状としてその外周面にセルを形成した、いわゆるシリンダー状とすることができる。以下では版胴の全体形状はシリンダー状のものとして説明する。 The shape other than the cell 10, the boundary portion 11 and the notch portion 12 may be the same as that of a general gravure printing plate. For example, the overall shape of the plate cylinder may be a flat plate and the cell 10 may be formed on one surface thereof. More typically, it can be a so-called cylindrical shape in which the entire shape is cylindrical and cells are formed on the outer peripheral surface thereof. In the following description, it is assumed that the overall shape of the plate cylinder is cylindrical.
印刷版１を実際に印刷に供する場合は、シリンダー状の版胴を回転させながらインキパンに漬けてセル１０にインキを充填した後、ドクターブレードで表面に残った余分なインキを掻き取り、紙やフィルムなどの被印刷媒体を圧胴との間に挟んで圧接してインキを転移させる。このとき図３に示す様に、セル１０に充填されたインキに気泡１３が混入または発生してしまうことがある。 When the printing plate 1 is actually used for printing, it is immersed in an ink pan while rotating the cylindrical plate cylinder and filled with ink in the cell 10, and then the excess ink remaining on the surface is scraped off with a doctor blade, A printing medium such as a film is sandwiched between an impression cylinder and pressed to transfer ink. At this time, as shown in FIG. 3, the bubbles 13 may be mixed or generated in the ink filled in the cells 10.
インキに気泡１３が混入または発生するのは、ドクターブレードに掻き取られたインキが再びインキパンに落下するときに空気を巻き込む、版胴の回転に伴い空気を巻き込むなど様々な理由によるものである。気泡が小さく、またセルの中に留まっている場合には、インキが被印刷媒体に転移されたときに流動することで潰れ、印刷の品質に大きな影響を与えることは少ないが、気泡が版胴の回転に伴ってセルからセルへと移動すると、その部分がスジとなって印刷ムラとなることがある。 The bubbles 13 are mixed or generated in the ink for various reasons, such as when the ink scraped off by the doctor blade falls again into the ink pan, air is involved, or air is involved as the plate cylinder rotates. If the bubbles are small and remain in the cell, they will collapse when flowing when the ink is transferred to the printing medium, and it will hardly affect the print quality. If the cell moves from cell to cell with the rotation, the portion may become a streak and cause uneven printing.
本発明の印刷版１においては、隣り合う二つのセルの間の境界部１１ａに設けられた欠部１２ａと、境界部１１ａと対向する境界部１１ｂにそれぞれ設けられた欠部１２ｂとがそれぞれ反対側の端部に設けられていることで一直線上に並ばないため、発生した気泡１３が移動する際に境界部１１ａに遮られる、また欠部１２ａを通過した場合も隣接のセルの境界部１１ｂに遮られるなどして気泡１３の移動が妨げられるため、スジが発生する虞が少ない。 In the printing plate 1 of the present invention, the notch portion 12a provided at the boundary portion 11a between two adjacent cells and the notch portion 12b provided at the boundary portion 11b facing the boundary portion 11a are opposite to each other. Since the generated bubbles 13 are arranged in a straight line by being provided at the end portion on the side, the generated bubbles 13 are blocked by the boundary portion 11a when moving, and also when passing through the notch portion 12a, the boundary portion 11b of the adjacent cell Since the movement of the bubbles 13 is hindered by being blocked by, for example, there is little possibility of streaking.
また、気泡１３の移動が妨げられるため、気泡が合体して大きな気泡となる虞を減少させることができる。一方、版胴の回転などに伴ってインキ面が大きな変形１４が発生した場合は、周囲の欠部１２ｃで隣接するセルのインキと連通しているため、隣接するセルからインキが直ちに流入、流出してインキ面の変形が抑制されるため、大きな変形１４がそのまま転移されることによる塗工抜けの発生を抑制できる。 In addition, since the movement of the bubbles 13 is hindered, it is possible to reduce the possibility that the bubbles merge to form large bubbles. On the other hand, when a large deformation 14 occurs on the ink surface due to the rotation of the plate cylinder or the like, the ink immediately flows in and out from the adjacent cell because the ink is communicated with the ink in the adjacent cell at the peripheral notch 12c. Since the deformation of the ink surface is suppressed, the occurrence of coating omission due to the large deformation 14 being transferred can be suppressed.
図４は、セルの形状を菱形とした本発明のグラビア印刷版２の模式図である。本実施形態においても境界部２１の一部に欠部２２が設けられ、隣り合う二つのセルの間の境界部２１ａに設けられた欠部２２ａと、境界部２１ａと対向する境界部２１ｂにそれぞれ設けられた欠部２２ｂとがそれぞれ反対側の端部に設けられていることで一直線上に並ばないため、発生した気泡２３が境界部に沿って移動するところ、境界部２１ａに遮られる、また欠部２２ａを通過した場合も隣接のセルの境界部２１ｂに遮られるなどして気泡２３の移動が妨げられるため、スジが発生する虞が少ない。 FIG. 4 is a schematic view of the gravure printing plate 2 of the present invention in which the cell shape is rhombus. Also in the present embodiment, the notch 22 is provided in a part of the boundary 21, and the notch 22 a provided in the boundary 21 a between two adjacent cells and the boundary 21 b facing the boundary 21 a, respectively. Since the provided notches 22b are provided at the opposite ends, they are not aligned in a straight line, so that the generated bubbles 23 move along the boundary, and are blocked by the boundary 21a. Even when it passes through the notch 22a, the movement of the bubble 23 is hindered by being blocked by the boundary portion 21b of the adjacent cell, so that there is little possibility of streaking.
また、気泡２３の移動が妨げられるため、気泡が合体して大きな気泡となる虞を減少させることができる。一方、版胴の回転などに伴ってインキ面が大きな変形２４が発生した場合は、周囲の欠部２２ｃで隣接するセルのインキと連通しているため、隣接するセルからインキが直ちに流入、流出してインキ面の変形が抑制されるため、大きな変形２４がそのまま転移されることによる塗工抜けの発生を抑制できる。 In addition, since the movement of the bubbles 23 is hindered, it is possible to reduce the possibility that the bubbles merge to form large bubbles. On the other hand, when a large deformation 24 of the ink surface occurs due to the rotation of the plate cylinder or the like, the ink immediately flows in and out of the adjacent cell because it communicates with the ink of the adjacent cell at the peripheral notch 22c. Since the deformation of the ink surface is suppressed, the occurrence of coating omission due to the large deformation 24 being transferred as it is can be suppressed.
図５は、セルの形状を六角形とした本発明のグラビア印刷版３の模式図である。本実施形態においても境界部３１の一部に欠部３２が設けられ、隣り合う二つのセルの間の境界部３１ａに設けられた欠部３２ａと、境界部３１ａと対向する境界部３１ｂにそれぞれ設けられた欠部３２ｂとがそれぞれ反対側の端部に設けられていることで一直線上に並ばないため、矩形状とした前述の実施形態同様に発生した気泡３３が移動する際に境界部３１ａに遮られる、また欠部３２ａを通過した場合も隣接のセルの境界部３１ｂに遮られるなどして気泡３３の移動が妨げられるため、スジが発生する虞が少ない。 FIG. 5 is a schematic diagram of the gravure printing plate 3 of the present invention in which the cell has a hexagonal shape. Also in the present embodiment, a notch 32 is provided in a part of the boundary 31, and a notch 32 a provided in the boundary 31 a between two adjacent cells and a boundary 31 b facing the boundary 31 a, respectively. Since the provided notches 32b are provided at the opposite end portions, they are not arranged in a straight line, so that when the bubbles 33 generated in the same manner as the above-described rectangular shape are moved, the boundary portion 31a is moved. Even when it passes through the notch 32a, the movement of the bubbles 33 is hindered by being blocked by the boundary portion 31b of the adjacent cell, so that there is little possibility of streaking.
また、気泡３３の移動が妨げられるため、気泡が合体して大きな気泡となる虞を減少させることができる。一方、版胴の回転などに伴ってインキ面が大きな変形３４が発生した場合、周囲の欠部３２ｃで隣接するセルのインキと連通しているため、隣接するセルからインキが直ちに流入、流出してインキ面の変形が抑制されるため、大きな変形３４がそのまま転移されることによる塗工抜けの発生を抑制できる。 In addition, since the movement of the bubbles 33 is hindered, it is possible to reduce the possibility that the bubbles merge to form large bubbles. On the other hand, when a large deformation 34 of the ink surface occurs due to the rotation of the plate cylinder or the like, the ink immediately flows in and out from the adjacent cells because the ink is communicated with the ink in the adjacent cells at the peripheral notch 32c. Since the deformation of the ink surface is suppressed, the occurrence of coating omission due to the large deformation 34 being transferred as it is can be suppressed.
以上説明したように、本発明のグラビア印刷版によれば、セルに生じたインキ面の変形が非印刷媒体にそのまま転写されて塗工抜けを生じたり、インキ中に気泡が発生したときに気泡が移動してスジを生じたり、複数の気泡が合体して大きな塗工抜けとなったりする虞を抑制できるグラビア印刷版を提供できる。 As described above, according to the gravure printing plate of the present invention, when the deformation of the ink surface generated in the cell is transferred as it is to the non-printing medium, coating omission occurs or bubbles are generated in the ink. It is possible to provide a gravure printing plate that can suppress the occurrence of streaks due to movement, or the possibility that a plurality of bubbles are combined to form a large missing coating.
１、２、３・・・グラビア印刷版
１０、２０、３０・・・セル
１１、２１、３１・・・境界部
１１ａ、２１ａ、３１ａ・・・二つのセルの間の境界部
１１ｂ、２１ｂ、３１ｂ・・・対向する境界部
１２、２２、３２・・・欠部
１２ａ、２２ａ、３２ａ・・・二つのセルの間の境界部に設けられた欠部
１２ｂ、２２ｂ、３２ｂ・・・対向する境界部に設けられた欠部
１２ｃ、２２ｃ、３２ｃ・・・周囲の欠部
１３、２３、３３・・・気泡
１４、２４、３４・・・変形
1, 2, 3 ... gravure printing plates 10, 20, 30 ... cells 11, 21, 31 ... boundary portions 11a, 21a, 31a ... boundary portions 11b, 21b between two cells, 31b ... opposing boundary parts 12, 22, 32 ... missing parts 12a, 22a, 32a ... opposing missing parts 12b, 22b, 32b ... provided at the boundary part between two cells Notch portions 12c, 22c, 32c provided around the boundary portions, peripheral notch portions 13, 23, 33 ... bubbles 14, 24, 34 ... deformation
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018041689A JP2019155632A (en) | 2018-03-08 | 2018-03-08 | Gravure printing plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018041689A JP2019155632A (en) | 2018-03-08 | 2018-03-08 | Gravure printing plate |
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| Publication Number | Publication Date |
|---|---|
| JP2019155632A true JP2019155632A (en) | 2019-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2018041689A Pending JP2019155632A (en) | 2018-03-08 | 2018-03-08 | Gravure printing plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918077A (en) * | 2019-12-06 | 2021-06-08 | 三星电机株式会社 | Intaglio printing plate and intaglio printing apparatus using the same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918077A (en) * | 2019-12-06 | 2021-06-08 | 三星电机株式会社 | Intaglio printing plate and intaglio printing apparatus using the same |
| US20210170774A1 (en) * | 2019-12-06 | 2021-06-10 | Samsung Electro-Mechanics Co., Ltd. | Gravure printing plate and gravure printing device using thereof |
| CN112918077B (en) * | 2019-12-06 | 2024-02-23 | 三星电机株式会社 | Intaglio printing plate and intaglio printing apparatus using the same |
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