JP2018034466A - Print having latent image intaglio printing pattern - Google Patents

Print having latent image intaglio printing pattern Download PDF

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JP2018034466A
JP2018034466A JP2016170808A JP2016170808A JP2018034466A JP 2018034466 A JP2018034466 A JP 2018034466A JP 2016170808 A JP2016170808 A JP 2016170808A JP 2016170808 A JP2016170808 A JP 2016170808A JP 2018034466 A JP2018034466 A JP 2018034466A
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intaglio
image
line
latent image
pattern
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岩崎 健
Takeshi Iwasaki
健 岩崎
北川 伸一
Shinichi Kitagawa
伸一 北川
正晴 小山
Masaharu Koyama
正晴 小山
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National Printing Bureau
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PROBLEM TO BE SOLVED: To provide a forgery prevention technique using convex streaks depending on observation angles, excellent in designability and a profound feeling, e.g., in a colored figure pattern by intaglio printing and requiring no dense streak engineering for convex streak height, width or the like, e.g., in the conventional latent image pattern.SOLUTION: The print has an intaglio printing pattern region including a concave-shaped streak group in which concave-shaped streaks isochromatic to a base material are numerously arranged and an intaglio printing streak group in which convex intaglio printing streaks with color different from the concave intaglio printing streaks are plurally arranged. In the concave streak group, bottom parts, side parts and peak parts are regularly arranged, the concave streak group and the intaglio printing streak group are laminated in such a manner that a part of the intaglio printing streaks has a plurality of crossed intersections on the peak parts, intaglio printing ink forming the intaglio printing streak is stuck to the side parts or the side parts and the bottom part of the concave streak adjacent to the intersection in the intaglio printing streaks, the same has an overflowing part thicker than the streak width of the intaglio printing streak crossed to the peak part.SELECTED DRAWING: Figure 3

Description

本発明は、偽造防止効果を必要とするセキュリティ印刷物である銀行券、パスポ−ト、有価証券、身分証明書、カ−ド、通行券等の分野において、凹凸を有する基材に凹版画線を印刷することで生じる凹版インキのあふれ現象を利用することで、観察角度の変化に伴い潜像模様を視認できる印刷物に関するものである。   In the fields of banknotes, passports, securities, identification cards, cards, passports, etc., which are security prints that require anti-counterfeiting effects, the present invention provides intaglio lines on uneven substrates. The present invention relates to a printed matter in which a latent image pattern can be visually recognized with a change in observation angle by utilizing an overflow phenomenon of intaglio ink generated by printing.

銀行券、株券、債券等の有価証券、各種証明書、重要書類等の印刷物において、偽造・改竄防止策として凹版印刷が用いられている。凹版印刷は、一般商業印刷に多用されているオフセット印刷とは異なり、凹状の画線で構成する印刷模様を有する版面に、凹版インキを詰め込み、強圧のもとで用紙等の基材に印刷することで、インキの盛りを有する印刷画線を形成する印刷方法であり、特殊な印刷機が必要となることを特徴としている。   Intaglio printing is used as a measure to prevent counterfeiting and falsification in banknotes, stock certificates, securities such as bonds, printed materials such as various certificates and important documents. Intaglio printing is different from offset printing, which is often used for general commercial printing, and intaglio ink is packed into a plate surface having a printing pattern composed of concave image lines, and printed on a substrate such as paper under strong pressure. Thus, this is a printing method for forming a printed image line having ink marks, and is characterized by requiring a special printing machine.

凹版印刷によって印刷される印刷模様には、主に、幾何学模様をデザイン化した彩紋模様や重厚さを表現する唐草模様等の意匠性に重点を置いた印刷模様と、正面からは一様な画線の集合としか見えないが、斜視から観察すると潜像模様が視認できる潜像凹版模様(例えば、特許文献1参照。)等、偽造・改竄防止に重点を置いた印刷模様に大別される。   Printing patterns printed by intaglio printing are mainly uniform from the front, with a focus on design such as a colored pattern designed as a geometric pattern and an arabesque pattern expressing heavyness. It can be seen only as a set of lines, but it can be roughly divided into printing patterns with emphasis on anti-counterfeiting and tampering, such as latent image intaglio patterns (for example, see Patent Document 1) where the latent image pattern can be seen when viewed from a perspective. Is done.

いずれの模様においても、模様を構成する凹版画線は、インキの盛りを有することから、オフセット印刷では感じない凹凸を指先で感じることで、真正であることも確認することができる。   In any pattern, since the intaglio image line constituting the pattern has a heap of ink, it can be confirmed that it is authentic by feeling the unevenness that is not felt in offset printing with the fingertip.

しかし、彩紋模様や唐草模様は、デザイン性に重点が置かれた印刷模様であることから、近年のカラーコピー機やカラープリンタの高機能化、高精度化に伴い、これらの複写機等で複製した模造品を目視で簡易に判別することは困難な状況となっている。   However, the scented pattern and the arabesque pattern are printed patterns with an emphasis on design, so in recent years, these copiers, etc. It is difficult to visually distinguish the copied counterfeit product visually.

一方、偽造・改竄防止を目的に有価証券の一部に盛り込まれている特許文献1記載の潜像凹版模様は、前述したとおり規則的に複数配置した凹版画線で構成した模様領域と、模様領域とは異なる方向に規則的に複数配置した凹版画線で構成した背景領域で形成されているため、デザイン性に欠け、視認性に優れた潜像凹版模様を提供するためには、十分なインキ盛り量が必要となる。そのため、緻密な版面設計、凹版インキの流動特性等の管理、適正なワイピング条件と印刷圧の管理等、製造する側にとって多くの負担を余儀なくされている。   On the other hand, the latent image intaglio pattern described in Patent Document 1 included in a part of securities for the purpose of preventing counterfeiting and falsification includes a pattern area composed of intaglio image lines regularly arranged as described above, and a pattern Since it is formed of a background area composed of intaglio image lines regularly arranged in a different direction from the area, it is insufficient to provide a latent image intaglio pattern with poor design and excellent visibility. An ink deposit is required. Therefore, many burdens are imposed on the manufacturing side, such as precise plate surface design, management of flow characteristics of intaglio ink, management of proper wiping conditions and printing pressure, and the like.

ここで、特許文献1記載の潜像凹版模様を始めとする従来の潜像凹版模様を、図面を用いて説明する。図1は、代表的な潜像凹版模様(9)の模式図である。図1(b)及び図1(d)は、潜像凹版模様(9)を真上から観察した状態(以下「第1の観察方向」という。)(E1)を示す図であり、図1(a)は、図1(b)のA−A’の断面図で、基材(1)に印刷された複数の凹版画線(2)の状態を示す模式図である。   Here, conventional latent image intaglio patterns including the latent image intaglio pattern described in Patent Document 1 will be described with reference to the drawings. FIG. 1 is a schematic diagram of a typical latent image intaglio pattern (9). FIGS. 1B and 1D are diagrams showing a state (hereinafter referred to as “first viewing direction”) (E1) of the latent image intaglio pattern (9) observed from directly above (FIG. 1). (A) is sectional drawing of AA 'of FIG.1 (b), and is a schematic diagram which shows the state of the several intaglio image line (2) printed on the base material (1).

凹版印刷の特徴は、一般商業印刷に用いられるオフセット印刷に比べ、インキの盛りによる凸形状によって指感性を付与できることにある。一般的な凹版画線の盛り量(高さ)は、5〜15μm程度であるが、潜像凹版模様(9)を形成する凹版画線(2)は、基材(1)に対して斜めから観察(以下「第2の観察方向」という。)(E2)した際に、基材(1)を隠蔽させるため、30〜40μmの盛り量(高さ)が求められている。画線ピッチは、目視で真上から見た際は、一様な画線の集合体としか見えないようにするため、200〜300μmで設計されている。なお、観察方向(E)及び画線の配列方向(S)については、本発明の形態を説明するところで詳細に説明する。   The feature of intaglio printing is that finger sensitivity can be imparted by a convex shape with a heap of ink, compared to offset printing used in general commercial printing. A typical intaglio line height (height) is about 5 to 15 μm, but the intaglio line (2) forming the latent image intaglio pattern (9) is oblique to the substrate (1). In order to conceal the base material (1) during observation (hereinafter referred to as “second observation direction”) (E2), a height (height) of 30 to 40 μm is required. The line pitch is designed to be 200 to 300 μm so that it can be seen only as a uniform set of line when viewed from directly above. Note that the observation direction (E) and the image line arrangement direction (S) will be described in detail when the embodiment of the present invention is described.

図1に示す潜像凹版模様(9)は、凹版画線(2)により形成された背景模様領域(4)と潜像模様領域(3)から成る。背景模様領域(4)における凹版画線(2)は、図1(b)に示すように、第1の方向(S1)に複数、規則的に印刷されている。それに対して、潜像模様領域(3)の凹版画線(2)は、第1の方向(S1)と直交する方向に複数、規則的に印刷されている。   The latent image intaglio pattern (9) shown in FIG. 1 includes a background pattern area (4) and a latent image pattern area (3) formed by the intaglio image line (2). As shown in FIG. 1B, a plurality of intaglio image lines (2) in the background pattern region (4) are regularly printed in the first direction (S1). On the other hand, a plurality of intaglio image lines (2) in the latent image pattern area (3) are regularly printed in a direction orthogonal to the first direction (S1).

図1(b)に示す潜像凹版模様(9)を、第2の観察方向(E2)から観察した図が、図1(c)である。図1(c)において、背景模様領域(4)に印刷された凹版画線(2)は、基材(1)を隠蔽することで、一様なインキの色として見えることになる。一方、潜像模様領域(3)に印刷された凹版画線(2)は、第1の方向(S1)と平行に印刷されていることから、基材(1)を隠蔽することなく、凹版画線(2)と基材(1)の混色した色として見えることになる。この背景模様領域(4)と潜像模様領域(3)のコントラストの差によって、人は背景模様(6)の中に隠蔽された潜像模様(5)を認識することになる。   FIG. 1C is a diagram in which the latent image intaglio pattern (9) shown in FIG. 1B is observed from the second observation direction (E2). In FIG.1 (c), the intaglio image line (2) printed on the background pattern area | region (4) will appear as a uniform ink color by concealing the base material (1). On the other hand, since the intaglio image line (2) printed in the latent image pattern area (3) is printed in parallel with the first direction (S1), the intaglio image line (2) is concealed without concealing the base material (1). It appears as a mixed color of the print line (2) and the substrate (1). Due to the difference in contrast between the background pattern area (4) and the latent image pattern area (3), the person recognizes the latent image pattern (5) hidden in the background pattern (6).

なお、このような画線構成によって形成された潜像凹版模様(9)は、第1の方向(S1)と直交した方向から観察した際は、潜像模様領域(3)が一様なインキの色として見え、背景模様領域(4)が凹版画線(2)と基材(1)の混色として潜像模様(5)を視認できることを特徴としている。   It should be noted that the latent image intaglio pattern (9) formed by such an image line structure is an ink having a uniform latent image pattern area (3) when observed from a direction orthogonal to the first direction (S1). The background pattern region (4) can be visually recognized as a latent image pattern (5) as a mixed color of the intaglio image line (2) and the base material (1).

前述したとおり、良好な視認性を有するためには、斜視で観察した際に、いかに浅い角度で凹版画線(2)が基材(1)を隠蔽するかであり、その要件として凹版インキの盛り量、つまり凹版画線(2)の高さが重要となる。   As described above, in order to have good visibility, the intaglio image line (2) hides the base material (1) at a shallow angle when observed from a perspective, and as a requirement of the intaglio ink, The height, that is, the height of the intaglio line (2) is important.

次に、別の形態の潜像凹版模様(9)として、潜像模様領域(3)と背景模様領域(4)のインキの盛り量に差を設けた潜像凹版印刷物を図1(d)に示す。図1(d)に示す潜像凹版印刷物は、第1の方向(S1)に複数、規則的に印刷された凹版画線(2)で構成されている。凹版画線(2)は、図1(d)のA−A'断面図である図1(e)に示すように、潜像模様領域(3)に対して背景模様領域(4)の盛り量(高さ)を低くしている潜像凹版印刷物である。   Next, as a latent image intaglio pattern (9) of another form, a latent image intaglio print having a difference in the amount of ink in the latent image pattern area (3) and the background pattern area (4) is shown in FIG. Shown in The latent image intaglio printed matter shown in FIG. 1 (d) is composed of a plurality of intaglio image lines (2) regularly printed in the first direction (S1). As shown in FIG. 1E, which is a cross-sectional view taken along the line AA ′ of FIG. It is a latent image intaglio print with a low amount (height).

この潜像凹版模様(9)を第1の観察方向(E1)から観察した際は、図1(b)に示す潜像凹版模様(9)より潜像模様をカモフラージュする効果に優れている。第2の観察方向(E2)から観察しようとした際は、潜像模様領域(3)の凹版画線(2)が基材(1)を隠蔽して一様なインキの色として視認される状態では、背景模様領域(4)の凹版画線(2)は、基材(1)を隠蔽しきれないため、基材(1)と凹版画線(2)の混色として視認されることで潜像模様が認識できる。   When the latent image intaglio pattern (9) is observed from the first observation direction (E1), the latent image intaglio pattern (9) shown in FIG. 1B is more effective in camouflaging the latent image pattern. When attempting to observe from the second observation direction (E2), the intaglio image line (2) of the latent image pattern region (3) is concealed from the base material (1) and is visually recognized as a uniform ink color. In the state, since the intaglio image line (2) of the background pattern region (4) cannot completely cover the base material (1), it is visually recognized as a color mixture of the base material (1) and the intaglio image line (2). The latent image pattern can be recognized.

図1(h)は、図1(g)に示すように、図1(e)で示した潜像凹版模様(9)とは逆の構成で、潜像模様領域(3)に対して背景模様領域(4)の盛り量(高さ)を高くした場合の潜像模様である。   As shown in FIG. 1 (g), FIG. 1 (h) shows a structure opposite to the latent image intaglio pattern (9) shown in FIG. This is a latent image pattern when the height (height) of the pattern area (4) is increased.

このように、特許文献1記載の技術は、凹版画線の盛り量に起因する潜像模様が形成可能な技術であるが、盛り量と潜像の隠蔽、出現を考慮した画線設計等、多くの労力を要して製造されるが、近年、高精度かつ高機能なUV−IJPの出現により、ドット状に吐出されるUVインキを積層させることで、凹版印刷により形成したような凸形状群で形成する印刷物を容易に作製できるようになってきている。   As described above, the technique described in Patent Document 1 is a technique capable of forming a latent image pattern due to the height of the intaglio image line. Manufactured with a lot of labor, but with the emergence of highly accurate and highly functional UV-IJP in recent years, the convex shape as formed by intaglio printing by laminating UV ink ejected in the form of dots It has become possible to easily produce printed matter formed in groups.

本出願人は、このようなUV−IJPを用いて、異なる色彩の凸状の画線を、模様に対応するように重ねて構成することで、観察角度の変化により、画像の色及び形状が変化した潜像画像が出現する偽造防止形成体を出願している(例えば、特許文献2参照)。   By using such UV-IJP, the applicant of the present invention can construct convex image lines of different colors so as to correspond to the pattern, so that the color and shape of the image can be changed by changing the observation angle. An application has been filed for a forgery prevention formed body in which a changed latent image appears (for example, see Patent Document 2).

特公昭56−19273号公報Japanese Patent Publication No. 56-19273 特開2014−136324号公報JP 2014-136324 A

特許文献2記載の技術は、従来の特許文献1記載の技術のような、多くの労力を要して製造することはなく、同様の凸状の画線を用いた偽造防止技術を提供することが可能となったが、UV−IJPは、特許文献1記載の技術を実施するために必要となる凹版印刷機とは異なり、比較的低価格で取得することができてしまうため、構成が把握できると、容易に作製されてしまうという問題があった。   The technique described in Patent Document 2 does not require much labor as in the conventional technique described in Patent Document 1, and provides a technique for preventing forgery using a similar convex image line. However, unlike the intaglio printing press required to implement the technique described in Patent Document 1, UV-IJP can be obtained at a relatively low price, so the configuration is known. If it was possible, there was a problem that it was easily manufactured.

このような背景の下、凹版印刷による彩紋模様のようなデザイン性及び重厚感に優れ、ただし、従来の潜像模様のような凸状の画線の高さや幅等の緻密な画線設計を要するようなことがなく、かつ、UV−IJPでは模倣できない観察角度に依存する凸状画線を用いた偽造防止技術が望まれていた。   Under such a background, it is excellent in design and a solid feeling like a crest pattern by intaglio printing, but a detailed image design such as the height and width of a convex image line like a conventional latent image pattern. Therefore, there has been a demand for a forgery prevention technique using a convex image line that depends on an observation angle that cannot be imitated by UV-IJP.

そこで、本発明は、前述した課題の解決を目的とするものであり、凹形状を有する基材上に、凹版印刷特有のデザイン性及び重厚感を備えた凹版画線を印刷することで、基材の凹形状部に生じるあふれ現象によって潜像模様が発現する印刷物を提供する。   Therefore, the present invention aims to solve the above-described problems, and by printing an intaglio image line having a design characteristic and a heavy feeling peculiar to intaglio printing on a substrate having a concave shape, Provided is a printed matter in which a latent image pattern appears due to an overflow phenomenon occurring in a concave portion of a material.

本発明は、基材上の少なくとも一部に、基材と等色の凹形状の画線が万線状に配置された凹形状画線群と、凹形状画線とは異なる色で凸形状の凹版画線が複数配置された凹版画線群を備えた凹版模様領域を有し、凹形状画線群は、底部、側部及び頂点部が規則的に配列され、凹形状画線群と凹版画線群は、頂点部の上に凹版画線の一部が交差した交点を複数有するように積層され、凹版画線は、交点に隣接する凹形状画線の側部又は側部と底部に、凹版画線を形成している凹版インキが付着し、頂点部に交差している凹版画線の画線幅より太いあふれ部を備え、複数のあふれ部により潜像凹版模様が形成され、基材を傾けて観察すると、凹版模様領域内に潜像凹版模様が視認可能なことを特徴とする潜像凹版模様を有する印刷物である。   The present invention has a concave shape line group in which concave shape lines of the same color as the base material are arranged in a line at least partially on the base material, and a convex shape with a color different from the concave shape line. The intaglio pattern region has a group of intaglio image lines in which a plurality of intaglio image lines are arranged, and the indented image line group is regularly arranged at the bottom, the side, and the vertex, The intaglio image line group is laminated so as to have a plurality of intersections where a part of the intaglio image line intersects on the apex portion, and the intaglio image line is a side portion or a side portion and a bottom portion of the concave shape image line adjacent to the intersection point. The intaglio ink forming the intaglio image line adheres, and has an overflow portion thicker than the image line width of the intaglio image line intersecting the apex portion, and a latent image intaglio pattern is formed by a plurality of overflow portions, When the substrate is tilted and observed, the printed matter has a latent image intaglio pattern characterized in that the latent image intaglio pattern is visible in the intaglio pattern region.

本発明の潜像凹版模様を有する印刷物は、潜像凹版模様が形成されている潜像凹版模様領域と、潜像凹版模様領域以外の領域の凹版画線の画線幅及び画線高さの関係が、i)潜像凹版模様領域の凹版画線の画線幅と潜像凹版模様領域以外の凹版画線の画線幅は等しく、かつ、潜像凹版模様領域の画線高さは、潜像凹版模領域以外の画線高さより高い、又は、ii)潜像凹版模様領域の凹版画線の画線幅は、潜像凹版模様領域以外の凹版画線の画線幅より太く、かつ、潜像凹版模様領域の画線高さと潜像凹版模領域以外の画線高さは等しい、又は、iii)潜像凹版模様領域の凹版画線の画線幅は、潜像凹版模様領域以外の凹版画線の画線幅より太く、かつ、潜像凹版模様領域の画線高さは、潜像凹版模領域以外の画線高さより高いことを特徴とする。   The printed matter having a latent image intaglio pattern according to the present invention has a latent image intaglio pattern area in which the latent image intaglio pattern is formed, and an intaglio image line width and height of an intaglio image line other than the latent image intaglio pattern area. The relationship is i) the line width of the intaglio image line of the latent image intaglio pattern area is equal to the line width of the intaglio image line other than the latent image intaglio pattern area, and the line height of the latent image intaglio pattern area is Higher than the image line height other than the latent image intaglio area, or ii) the image line width of the intaglio image line in the latent image intaglio pattern area is thicker than the image line width of the intaglio image line other than the latent image intaglio pattern area, and The image line height in the latent image intaglio area is equal to the image line height in areas other than the latent image intaglio area, or iii) the image line width of the intaglio image line in the latent image intaglio area is other than the latent image intaglio area. It is thicker than the line width of the intaglio image line, and the image line height of the latent image intaglio pattern area is higher than the image line height other than the latent image intaglio pattern area. To.

本発明の潜像凹版模様を有する印刷物は、凹版画線の画線幅が潜像凹版模様領域と潜像凹版模様領域以外の領域において、一定の範囲内における画線面積率が等しいことを特徴とする。   The printed matter having a latent image intaglio pattern according to the present invention is characterized in that the image line area ratio in the fixed range is equal in the image line width of the intaglio image line in a region other than the latent image intaglio pattern region and the latent image intaglio pattern region. And

本発明の印刷物は、特許文献1記載の従来の潜像模様のように、単純な縦万線と横万線の構成だけではなく、彩紋模様の中に隠蔽した潜像模様を形成することが可能となったため、観察角度に依存する潜像模様に対してデザイン性を向上させることができた。   The printed matter of the present invention forms not only a simple vertical line and horizontal line structure, but also a latent image pattern concealed in a colored pattern like the conventional latent image pattern described in Patent Document 1. As a result, it was possible to improve the design for latent image patterns that depend on the viewing angle.

凹版印刷特有の強い印刷圧で印刷される凹版画線と凹凸形状を組み合わせた時にのみ生じるあふれ現象は、無圧のUV−IJPでは再現が不可能であり、偽造防止効果が向上した。   The overflow phenomenon that occurs only when the intaglio image line printed with a strong printing pressure peculiar to intaglio printing and the concavo-convex shape cannot be reproduced with no pressure UV-IJP, and the forgery prevention effect is improved.

本発明による潜像模様は、凸部の斜面及び底部(凹部)に特有のあふれ現象が生じているが、UV−IJPでは、このような状態と同等な太りを印刷するには、高精度な刷合せが必要となることから、容易にUV−IJPを用いて本発明の潜像模様を形成することができない。   In the latent image pattern according to the present invention, the overflow phenomenon peculiar to the slope and the bottom (concave portion) of the convex portion occurs, but in UV-IJP, in order to print the same weight as this state, it is highly accurate. Since printing is required, the latent image pattern of the present invention cannot be easily formed using UV-IJP.

本発明による潜像模様は、凹版画線のインキ盛り量が従来の特許文献1記載の凹版画線のインキ盛り量より遥かに低くてよいため、コストの低減が図られていることと、製造工程間において、印刷物を複数積層した場合でも、嵩高にはならず、安定した作業を行うことも可能となる。   In the latent image pattern according to the present invention, the amount of ink on the intaglio image line may be much lower than the amount of ink on the intaglio image line described in Patent Document 1; Even when a plurality of printed materials are stacked between the processes, the printed material is not bulky, and a stable operation can be performed.

従来の潜像凹版模様の画線構成を説明する模式図を示す。The schematic diagram explaining the image line structure of the conventional latent image intaglio pattern is shown. 本発明における印刷物を示す平面図を示す。The top view which shows the printed matter in this invention is shown. 本発明における潜像凹版模様を示す展開図を示す。The developed view which shows the latent image intaglio pattern in this invention is shown. 本発明における凹形状画線群を示す平面図及び断面図を示す。The top view and sectional drawing which show the concave shape line group in this invention are shown. 本発明における「あふれ部」を説明する模式図を示す。The schematic diagram explaining the "overflow part" in this invention is shown. 凹版画線と凹形状画線との配置角度を説明する模式図を示す。The schematic diagram explaining the arrangement | positioning angle of an intaglio image line and a concave shape image line is shown. 凹版画線の画線幅及び画線高さの関係を説明する模式図を示す。The schematic diagram explaining the relationship between the line width and line height of an intaglio image line is shown. 本発明における潜像凹版模様の作製方法を説明する模式図を示す。The schematic diagram explaining the preparation methods of the latent image intaglio pattern in this invention is shown.

本発明を実施するための形態について、図面を参照して説明する。しかしながら、本発明は、以下に述べる実施するための形態に限定されるものではなく、特許請求の範囲の記載における技術的思想の範囲内であれば、その他の様々な実施の形態が含まれる。   DESCRIPTION OF EMBODIMENTS Embodiments for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments described below, and includes various other embodiments as long as they are within the scope of the technical idea described in the claims.

本発明における凹版画線のあふれ現象を利用した潜像凹版模様について説明する。図2は、潜像凹版模様(9)を盛り込んだ印刷物(7)を示す平面図である。印刷物(7)は、例えば、紙幣、パスポート、身分証明書等の貴重印刷物であり、図2では、商品券を例とし、基材(1)上の少なくとも一部に本発明の特徴点となる凹版模様領域(8)に潜像凹版模様(9)が形成されている。   The latent image intaglio pattern utilizing the overflow phenomenon of the intaglio image line in the present invention will be described. FIG. 2 is a plan view showing a printed matter (7) including a latent image intaglio pattern (9). The printed matter (7) is, for example, a valuable printed matter such as a banknote, a passport, and an identification card. In FIG. 2, a gift certificate is taken as an example, and at least part of the substrate (1) is a feature of the present invention. A latent image intaglio pattern (9) is formed in the intaglio pattern area (8).

本発明における基材(1)は、上質紙、コート紙、アート紙等の紙葉類であり、後述する凹版模様領域(8)に形成される凹形状画線群が形成可能であれば、特に限定されるものではない。また、凹版模様領域(8)は、基材(1)上に形成されていれば、基材(1)全体に形成されていてもよく、特に大きさに限定はない。さらに、凹版模様領域(8)には、凹形状画線群の上に、基材(1)とは異なる色の凹版画線群が印刷されて成る。この構成については後述する。   The base material (1) in the present invention is paper such as high-quality paper, coated paper, art paper, etc., and if a concave shape image line group formed in the intaglio pattern region (8) described later can be formed, It is not particularly limited. Further, the intaglio pattern region (8) may be formed on the entire base material (1) as long as it is formed on the base material (1), and the size is not particularly limited. Furthermore, the intaglio pattern region (8) is formed by printing an intaglio image line group having a color different from that of the base material (1) on the concave shape image line group. This configuration will be described later.

図3は、本発明の潜像凹版模様(9)を説明する平面図である。図3(a)は、凹版画線(2)が複数印刷された複雑な曲線で構成する花や帯などの形を呈した幾何学的な彩紋模様(10)の模式図である。   FIG. 3 is a plan view for explaining the latent image intaglio pattern (9) of the present invention. FIG. 3A is a schematic diagram of a geometric pattern (10) having a shape such as a flower or a band composed of a complex curve in which a plurality of intaglio image lines (2) are printed.

本発明では、彩紋模様(10)を例に説明するが、後述する凹形状画線群(13)と交差する直線及び/又は曲線の集合体であれば彩紋模様(10)に限定されるものではないが、意匠性を重視する場合は、彩紋模様(10)のような幾何学模様が好ましい。   In the present invention, the chromatic pattern (10) will be described as an example. However, it is limited to the chromatic pattern (10) as long as it is an aggregate of straight lines and / or curved lines that intersect the concave shape line group (13) described later. Although not intended, a geometrical pattern such as a colored pattern (10) is preferable when emphasizing the design.

図3(b)は、彩紋模様(10)に隠蔽された潜像凹版模様(9)を形成する潜像凹版模様領域(11)を示す図である。潜像凹版模様(9)の発現原理は後述するが、彩紋模様(10)を第1の観察方向(E1)から観察した際は、潜像凹版模様領域(11)を視認することはできないが、第2の観察方向(E2)から観察した際は、図3(c)に示すように、ドットの集合体で表現される潜像凹版模様(9)を視認することができる。   FIG. 3B is a diagram showing the latent image intaglio pattern region (11) forming the latent image intaglio pattern (9) concealed in the chromatic pattern (10). Although the expression principle of the latent image intaglio pattern (9) will be described later, the latent image intaglio pattern area (11) cannot be visually recognized when the chromatic pattern (10) is observed from the first observation direction (E1). However, when observed from the second observation direction (E2), as shown in FIG. 3C, the latent image intaglio pattern (9) represented by an aggregate of dots can be visually recognized.

本発明の印刷物(7)は、基材(1)上の少なくとも一部に本発明の特徴点となる潜像凹版模様(9)が形成された凹版模様領域(8)を備えている。図4(a)は、凹版模様領域(8)に形成される凹形状画線群(13)を模式的に示した平面図である。凹形状画線群(13)は、少なくとも凹版模様領域(8)内に形成されており、凹形状画線(12)が、第1の方向(S1)に万線状に配列されている。画線が一定の規則に従って複数配列されている状態を本発明では「万線状」という。この「万線状」を構成する画線は、直線でも曲線でも構わないが、以下、直線として説明する。   The printed matter (7) of the present invention includes an intaglio pattern region (8) in which a latent image intaglio pattern (9) serving as a characteristic point of the present invention is formed on at least a part of the substrate (1). FIG. 4A is a plan view schematically showing the concave shape line group (13) formed in the intaglio pattern region (8). The concave image line group (13) is formed at least in the intaglio pattern region (8), and the concave image lines (12) are arranged in a line in the first direction (S1). In the present invention, a state in which a plurality of lines are arranged according to a certain rule is referred to as “line-like”. The image line constituting this “line shape” may be a straight line or a curved line, but will be described below as a straight line.

図4(b)は、図4(a)のA−A’断面図であり、図4(c)は、図4(b)の一部拡大図である。凹形状画線(12)は、基材(1)と等色で形成される。凹形状画線(12)は、傾斜した側部(15)及び底部(16)で形成されており、基材(1)表面と同一面が凸部の頂点部(14)に相当する。   4B is a cross-sectional view taken along line A-A ′ of FIG. 4A, and FIG. 4C is a partially enlarged view of FIG. 4B. The concave image line (12) is formed in the same color as the substrate (1). The concave shaped image line (12) is formed by the inclined side part (15) and the bottom part (16), and the same surface as the surface of the substrate (1) corresponds to the apex part (14) of the convex part.

本発明の潜像凹版模様(9)は、凹形状画線(12)を形成する側部(15)及び底部(16)に印刷された凹版画線(2)のあふれによって形成される。「あふれ現象」が発生するメカニズムについては後述するが、凹形状画線(12)が浅過ぎると「あふれ現象」は発生せず、逆に深過ぎると凹版画線(2)が底部(16)に印刷されないため、画線切れとなる。したがって、凹形状画線(12)の深さ(h1)は、30〜60μmの範囲で形成する必要がある。   The latent image intaglio pattern (9) of the present invention is formed by the overflow of the intaglio image line (2) printed on the side portion (15) and the bottom portion (16) forming the concave shape image line (12). The mechanism of the occurrence of the “overflow phenomenon” will be described later. If the concave shape line (12) is too shallow, the “overflow phenomenon” does not occur. On the other hand, if the depth is too deep, the intaglio line (2) is at the bottom (16). Will not be printed on the screen, the line will be cut. Therefore, it is necessary to form the depth (h1) of the concave image line (12) in the range of 30 to 60 μm.

潜像凹版模様(9)は、「あふれ現象」によって凹形状画線(12)の側部(15)及び底部(16)に生じる微細なドット状の凹版画線(2)の太りの集合体として視認することから、凹形状画線(12)のピッチ(P1)が短いほど、浅い角度で観察した際に「あふれ現象」が連結して見えるために視認性は向上する。しかし、ピッチ(P)が細かくなるに従い、傾斜した側部(15)を有する底部(16)は浅く、かつ、狭くなる。したがって、実験の結果、凹形状画線群(13)のピッチ(P1)の範囲は、400〜1000μmが適正となる。   The latent image intaglio pattern (9) is a thick aggregate of fine dot-shaped intaglio image lines (2) generated on the side (15) and bottom (16) of the concave image line (12) due to the “overflow phenomenon”. As the pitch (P1) of the concave shape image line (12) is shorter, the “overflow phenomenon” appears to be connected when observed at a shallow angle, so that the visibility is improved. However, as the pitch (P) becomes finer, the bottom (16) having the inclined side (15) becomes shallower and narrower. Therefore, as a result of the experiment, the appropriate range of the pitch (P1) of the concave shape line group (13) is 400 to 1000 μm.

凹形状画線群(13)の頂点部(14)の幅(W1)は、前述した凹形状画線(12)のピッチにより決定される。頂点部(14)の幅(W1)が狭い場合は、頂点部(14)に印刷される凹版画線(2)の面積が小さくなり、相対的にあふれの面積が大きくなるため、第1の観察方向(E1)から観察した際に、シャープな凹版画線(2)で印刷された彩紋模様(10)とはならなくなる。   The width (W1) of the vertex part (14) of the concave shape line group (13) is determined by the pitch of the concave shape line (12) described above. When the width (W1) of the vertex portion (14) is narrow, the area of the intaglio image line (2) printed on the vertex portion (14) is reduced, and the area of overflow is relatively increased. When observed from the observation direction (E1), the colored pattern (10) printed with the sharp intaglio image line (2) is not obtained.

一方、頂点部(14)の幅(W1)を広くした場合、底部(16)が狭くなり、かつ、側部(15)の傾斜が急になるため、凹版画線(2)が画線切れを起こすことになる。さらに、潜像凹版模様(9)は、側部(15)及び底部(16)に生じたあふれを視認することで、潜像模様(5)を認識するため、側部(15)の傾斜が急になることは、視認できる斜視角が深くなることにつながるため、結果として視認性が劣ることになる。したがって、実験の結果、頂点部(14)の幅(W1)の範囲は、200〜700μmが適正となる。   On the other hand, when the width (W1) of the apex portion (14) is increased, the bottom portion (16) becomes narrower and the inclination of the side portion (15) becomes steep, so that the intaglio image line (2) is cut off. Will be caused. Furthermore, since the latent image intaglio pattern (9) recognizes the latent image pattern (5) by visually recognizing the overflow generated on the side portion (15) and the bottom portion (16), the inclination of the side portion (15) is reduced. The abruptness leads to a deeper visible squint angle, resulting in poor visibility. Therefore, as a result of the experiment, the range of the width (W1) of the vertex portion (14) is appropriately 200 to 700 μm.

凹形状画線群(13)は、基材(1)が紙基材であれば、公知のすき入れ技術、エンボス加工又はレーザ加工により形成することができる。エンボス加工により凹形状画線群(13)を形成した場合、凹版印刷によって彩紋模様(10)を印刷する際に、凹版印圧によって印刷直前にエンボスが平らになり、凹形状画線(12)が変形して崩れる可能性を有しているため、すき入れ技術又はレーザ加工により形成することが好ましい。   If the base material (1) is a paper base material, the concave image line group (13) can be formed by a known scoring technique, embossing or laser processing. When the concave image line group (13) is formed by embossing, the embossing is flattened immediately before printing by the intaglio printing pressure when printing the chromatic pattern (10) by intaglio printing. ) May be deformed and collapsed, and therefore, it is preferably formed by a penetration technique or laser processing.

次に、前述した凹形状画線群(13)の上に形成する凹版画線群(17)について説明する。凹版印刷は、画線で形成された印刷模様が施された金属製の凹版版面に、パターンローラによって凹版インキを転移させた後、ワイピングローラで拭き取ることで、凹形状で形成した凹版画線部にのみ凹版インキが残ることになる。この状態で印刷版胴(凹版版面)と圧胴の間に用紙を通すことで凹版インキは、用紙に転移され、印刷模様となる。   Next, the intaglio image line group (17) formed on the concave shape image line group (13) will be described. Intaglio printing is an intaglio image line formed in a concave shape by transferring intaglio ink to a metal intaglio plate surface with a printed pattern formed by image lines, and then wiping with a wiping roller. Only the intaglio ink will remain. In this state, by passing the paper between the printing plate cylinder (intaglio plate surface) and the impression cylinder, the intaglio ink is transferred to the paper and becomes a printing pattern.

印刷時の印圧は、線圧1cm当たり1トンといわれている。そのため、紙厚95μmの用紙は、85μm程度に圧縮され、更に凹版画線部では、用紙が凹版画線部内に食い込むことでエンボス形状が形成され、エンボス形状の凸部に凹版インキが存在することになる。このことによって、凹版印刷独特の盛りのある印刷物が得られる。   The printing pressure during printing is said to be 1 ton per 1 cm of linear pressure. Therefore, a paper with a thickness of 95 μm is compressed to about 85 μm, and further, in the intaglio image line portion, an emboss shape is formed by the paper biting into the intaglio image line portion, and intaglio ink is present on the embossed shape convex portion. become. As a result, a printed material peculiar to intaglio printing can be obtained.

このように、凹版印刷では、凹版インキが用紙に転移する瞬間においては、用紙が凹版版面に密着しており、凹版画線部内の凹版インキは、凹版版面部と用紙で密閉されているため、凹版画線部内の凹版インキが横方向に漏れることはない。   Thus, in intaglio printing, at the moment when the intaglio ink is transferred to the paper, the paper is in close contact with the intaglio plate surface, and the intaglio ink in the intaglio image line portion is sealed with the intaglio plate surface portion and the paper, The intaglio ink in the intaglio image line portion does not leak laterally.

一方、本発明の潜像凹版模様(9)は、凹形状画線(12)を有する基材(1)に対して交差する方向に凹版画線(2)を印刷することで、凹形状画線(12)の側部(15)から底部(16)にかけて、徐々に凹版印圧が低下するとともに、基材(1)と凹版画線部の密閉性が失われるため、凹版インキは、横方向にあふれる(広がる)ことになる。この凹版インキがあふれることを本発明においては、「あふれ現象」という。つまり、同じ画線幅の凹版画線部であっても、頂点部(14)に対して底部(16)に印刷された凹版画線は、僅かではあるが太くなっている。凹形状画線(12)と平行な場合は、「あふれ現象」は生じない。   On the other hand, the latent image intaglio pattern (9) of the present invention prints the intaglio image line (2) in a direction intersecting the substrate (1) having the indentation image line (12). The intaglio printing pressure gradually decreases from the side (15) to the bottom (16) of the line (12) and the sealing property between the base (1) and the intaglio line is lost. It will overflow (spread) in the direction. In the present invention, the overflow of the intaglio ink is referred to as “overflow phenomenon”. That is, even in the intaglio image line portion having the same image line width, the intaglio image line printed on the bottom portion (16) with respect to the vertex portion (14) is slightly thick. In the case of being parallel to the concave image line (12), the “overflow phenomenon” does not occur.

前述したように、本発明の凹版画線群(17)は、デザイン性の高い、複雑な曲線で構成する花や帯などの形を呈した幾何学的な彩紋模様(10)を形成するため、凹版画線(2)が複数幾何学的に配置されている。   As described above, the intaglio line group (17) of the present invention forms a geometric pattern (10) having a high design and a shape such as a flower or a band composed of complicated curves. Therefore, a plurality of intaglio image lines (2) are arranged geometrically.

図5は、凹版模様領域(8)に印刷された凹版画線群(17)の状態を示す模式図である。図5(a)は、凹版模様領域(8)に形成された凹形状画線群(13)上に印刷された凹版画線群(17)の一部を拡大した図である。凹版画線群(17)は、凹形状画線群(13)の上に、凹版画線(2)の一部が凹形状画線(12)と交差するように印刷されることとなり、凹版画線(2)と凹形状画線群(13)の頂点部(14)とが重なっている箇所を交点(19)という。   FIG. 5 is a schematic diagram showing the state of the intaglio image line group (17) printed in the intaglio pattern area (8). FIG. 5A is an enlarged view of a part of the intaglio image line group (17) printed on the intaglio image line group (13) formed in the intaglio pattern area (8). The intaglio image line group (17) is printed on the indented image line group (13) so that a part of the intaglio image line (2) intersects the indented image line (12). A point where the print line (2) and the vertex (14) of the concave line group (13) overlap is referred to as an intersection (19).

凹版画線(2)の画線幅(W)、ピッチ(P)及び画線高さ(h)については、一般的な凹版印刷の範囲であれば特に限定はないが、本印刷物が偽造防止効果を必要とするセキュリティ印刷物を対象としていることから、画線幅(W)は10〜300μm、ピッチ(P)は200〜1000μm、画線高さ(h)は5〜70μmの範囲で形成されることが多い。   The line width (W), pitch (P), and line height (h) of the intaglio image line (2) are not particularly limited as long as they are within the range of general intaglio printing, but the printed matter prevents forgery. Since it is intended for security prints that require effects, the line width (W) is 10 to 300 μm, the pitch (P) is 200 to 1000 μm, and the line height (h) is 5 to 70 μm. Often.

図5(b)は、図5(a)の四角囲いの箇所を更に拡大した図である。目視では一様な凹版画線(2)が複数配置されたことによって構成された彩紋模様(10)であるが、更に拡大して見ると凹形状画線(12)の側部(15)から底部(16)にかけて、「あふれ現象」が発生する。この「あふれ現象」となる凹版画線(2)の一部の太った箇所を「あふれ部」(18)という。「あふれ部」は、交点(19)に隣接して形成されることとなる。   FIG. 5B is a further enlarged view of the rectangular box in FIG. 5A. Although it is a chromatic pattern (10) constituted by arranging a plurality of uniform intaglio image lines (2) by visual observation, it is a side portion (15) of the concave shape image line (12) when further enlarged. The “overflow phenomenon” occurs from the bottom to the bottom (16). The thick part of the intaglio line (2) that causes this “overflow phenomenon” is called “overflow portion” (18). The “overflow portion” is formed adjacent to the intersection (19).

このような凹版画線(2)を第2の観察方向(E2)から観察した際は、頂点部(14)の凹版画線(2)は細く見えるのに対し、側部(15)から底部(16)にかけて徐々に太くなる凹版画線(2)は、鮮明に視認することができるようになる。   When such an intaglio image line (2) is observed from the second observation direction (E2), the intaglio image line (2) of the apex portion (14) looks thin, whereas the bottom portion from the side portion (15). The intaglio line (2) that gradually becomes thicker toward (16) can be clearly seen.

凹版インキの「あふれ現象」は、全ての凹版模様領域(8)における凹版画線(2)で発生するものではなく、前述した基材(1)に施された凹形状の深さ、凹版印圧の高さ、凹版版面の画線深度、画線幅等の条件が整ったときに初めて発生するものである。   The “overflow phenomenon” of the intaglio ink does not occur in the intaglio line (2) in all the intaglio pattern areas (8), but the depth of the concave shape applied to the base material (1), the intaglio mark It occurs for the first time when conditions such as the height of the pressure, the image depth of the intaglio, and the image width are satisfied.

そこで、「あふれ現象」が生じる画線深度(h)、画線幅(W)及び印圧との関係について調査した結果を表1に示す。なお、凹版版面においては画線深度(h)となるが、凹版インキが凹版版面から基材(1)に転移されると、画線高さ(h)となる。   Therefore, Table 1 shows the results of investigation on the relationship between the image depth (h), the image width (W), and the printing pressure at which the “overflow phenomenon” occurs. In addition, although it becomes image line depth (h) in an intaglio plate surface, when an intaglio ink is transferred from an intaglio plate surface to a base material (1), it becomes image line height (h).

なお、調査においては、凹版版面の画線深度(h)を30μmと70μmとし、画線幅(W)は40μmから200μmまでの各画線幅(W)を準備し、印圧1500kgf、2000kgf、2500kgf、4000kgfとして印刷を行った。画線深度(h)と画線幅(W)との関係では、安定したインキの転移を考慮すると、画線幅(W)よりも画線深度(h)の方が小さい値となる。   In the investigation, the image line depth (h) of the intaglio plate surface was set to 30 μm and 70 μm, and the image line width (W) was prepared for each image line width (W) from 40 μm to 200 μm, and the printing pressure was 1500 kgf, 2000 kgf, Printing was performed at 2500 kgf and 4000 kgf. Regarding the relationship between the image line depth (h) and the image line width (W), the image line depth (h) is smaller than the image line width (W) in consideration of stable ink transfer.

また、「あふれ現象」は、凹形状画線(12)と凹版画線(2)が重なったところで発生するが、凹形状画線(12)と凹版画線(2)の配置角度にも影響を受ける。そこで、図6に示すように、印刷方向(S2)に対して90°に凹形状画線(12)、45°に凹版画線(2)をそれぞれ配置した。その時の凹版版面の温度は、60℃である。   The “overflow phenomenon” occurs when the concave shape image line (12) and the intaglio image line (2) overlap, but also affects the arrangement angle of the concave shape image line (12) and the intaglio image line (2). Receive. Therefore, as shown in FIG. 6, the concave shape image line (12) is arranged at 90 ° and the intaglio image line (2) is arranged at 45 ° with respect to the printing direction (S2). The temperature of the intaglio plate at that time is 60 ° C.

Figure 2018034466
Figure 2018034466

表1に示すように、画線深度(h)が30μmの場合には、画線幅(W)が100μm、印圧が4000kgfとなると、初めて「あふれ現象」が発生した。画線幅(W)が120μmの場合には、確認した四つの印圧全てに対して「あふれ現象」は発生した。   As shown in Table 1, when the image line depth (h) was 30 μm, the “overflow phenomenon” occurred for the first time when the image line width (W) was 100 μm and the printing pressure was 4000 kgf. When the line width (W) was 120 μm, the “overflow phenomenon” occurred for all the four printing pressures confirmed.

画線深度(h)が70μmの場合には、前述同様、安定したインキの転移を考慮し、画線深度(h)よりも画線幅(W)の方を大きくし、画線幅(W)を110μmから設定したが、110μmから200μmまでの画線幅(w)及び印圧の全てにおいて「あふれ現象」が発生した。   When the image line depth (h) is 70 μm, the image line width (W) is made larger than the image line depth (h) in consideration of stable ink transfer as described above, and the image line width (W ) Was set from 110 μm, but “overflow phenomenon” occurred in all of the image line width (w) and printing pressure from 110 μm to 200 μm.

表1により、画線深度(h)は深く、画線幅(W)は広く、更には、印圧は高く設定した方が「あふれ現象」は発生するといえるが、設計する模様や基材(1)への影響を考慮すると、その限りではないため、印刷環境や製品により適宜設定すればよい。   According to Table 1, it can be said that the “overflow phenomenon” occurs when the line depth (h) is deep, the line width (W) is wide, and the printing pressure is set high. Considering the influence on 1), it is not limited to this, so it may be set appropriately depending on the printing environment and the product.

印刷物上における凹版画線(2)の画線幅(W)は太く、画線高さ(h)は高い方が「あふれ現象」が発生しやすいが、凹版模様領域(8)内全ての凹版画線(2)の画線幅(W)及び画線高さ(h)をそのように設計しなければならないことでもない。   The larger the line width (W) of the intaglio image line (2) on the printed matter and the higher the image line height (h), the more likely the “overflow phenomenon” will occur, but all indentations in the intaglio pattern area (8) It does not mean that the line width (W) and line height (h) of the print line (2) must be so designed.

図7は、凹版画線(2)の画線幅(W)と画線高さ(h)の状態を示す図である。「あふれ現象」を発生させるために必要な領域は潜像凹版模様領域(11)であるため、凹版模様領域(8)内全ての凹版画線(2)を対象としなくても、潜像凹版模様領域(11)と、それ以外の領域(22)とで差を設けてもよい。   FIG. 7 is a diagram illustrating the state of the image line width (W) and the image line height (h) of the intaglio image line (2). Since the area necessary for generating the “overflow phenomenon” is the latent image intaglio pattern area (11), the latent image intaglio can be obtained even if not all intaglio image lines (2) in the intaglio pattern area (8) are targeted. A difference may be provided between the pattern region (11) and the other region (22).

そこで図7(a)に示す凹版画線(2)は、潜像凹版模様領域(11)と潜像凹版模様領域(11)以外の領域(22)は、画線幅(W2)が等しい。ただし、A−A'における断面図に示すように、潜像凹版模様領域(11)の画線高さ(h2)の方が、潜像凹版模様領域(11)以外の領域(22)の画線高さ(h3)よりも高くなっている。   Accordingly, in the intaglio image line (2) shown in FIG. 7A, the latent image intaglio pattern region (11) and the region (22) other than the latent image intaglio pattern region (11) have the same image line width (W2). However, as shown in the cross-sectional view at AA ′, the image line height (h2) of the latent image intaglio pattern area (11) is the image of the area (22) other than the latent image intaglio pattern area (11). It is higher than the line height (h3).

また、図7(b)に示す凹版画線(2)は、A−A'における断面図に示すように、潜像凹版模様領域(11)と潜像凹版模様領域(11)以外の領域(22)では、画線高さ(h2)が等しい。ただし、潜像凹版模様領域(11)の画線幅(W2)の方が、潜像凹版模様領域(11)以外の領域(22)の画線幅(W3)よりも太くなっている。   In addition, the intaglio image line (2) shown in FIG. 7B is an area other than the latent image intaglio pattern area (11) and the latent image intaglio pattern area (11) as shown in the cross-sectional view along AA ′. 22), the line height (h2) is equal. However, the image line width (W2) of the latent image intaglio pattern area (11) is thicker than the image line width (W3) of the area (22) other than the latent image intaglio pattern area (11).

さらに、図7(c)に示す凹版画線(2)は、潜像凹版模様領域(11)の画線幅(W2)が、潜像凹版模様領域(11)以外の領域(22)の画線幅(W3)よりも太く、A−A'断面図に示すように、潜像凹版模様領域(11)の画線高さ(h2)の方が、潜像凹版模様領域(11)以外の領域(22)の画線高さ(h3)よりも高くなっている。   Further, in the intaglio image line (2) shown in FIG. 7C, the image line width (W2) of the latent image intaglio pattern region (11) is an image in the region (22) other than the latent image intaglio pattern region (11). It is thicker than the line width (W3), and the image line height (h2) of the latent image intaglio pattern area (11) is other than the latent image intaglio pattern area (11), as shown in the AA ′ sectional view. It is higher than the image line height (h3) of the region (22).

図7に示したように、潜像凹版模様領域(11)とそれ以外の領域(22)で凹版画線(2)の画線幅(W)及び画線高さ(h)を異ならせると、「あふれ現象」が発生しやすくなり、かつ、凹版インキのコスト削減にもつながるため、好ましい。   As shown in FIG. 7, when the image line width (W) and image line height (h) of the intaglio image line (2) are made different between the latent image intaglio pattern region (11) and the other region (22). The “overflow phenomenon” is likely to occur, and the cost of the intaglio ink is reduced, which is preferable.

表1においては凹版画線(2)と凹形状画線(12)の配列方向を印刷方向(S2)に対して、それぞれ45°と90°に設計した状態で印刷したが、表2については、画線幅(W)を200μm、画線深度(h)を70μm、印圧を2500kgf及び版面温度を60℃の一定条件で、各画線の配列方向を異ならせて、「あふれ現象」の状況を調査した。なお、表2中の評価として、○:あふれた、△:一部あふれた、×:あふれないとした。   In Table 1, printing was performed in a state in which the arrangement direction of the intaglio image line (2) and the concave shape image line (12) was designed to be 45 ° and 90 ° with respect to the printing direction (S2), respectively. The line width (W) is 200 μm, the line depth (h) is 70 μm, the printing pressure is 2500 kgf, and the plate surface temperature is 60 ° C. The situation was investigated. The evaluation in Table 2 is as follows: ○: overflowed, Δ: partially overflowed, x: not overflowed.

Figure 2018034466
Figure 2018034466

表2に示すように、印刷方向(S2)に対して、凹形状画線(12)の配列角度を45°又は90°とし、凹版画線(2)の配列角度を0°とすると、「あふれ現象」が明確に生じ、逆に、二つの画線が同じ角度に配列、いわゆる、完全に重なる配列では「あふれ現象」は生じない。なお、「あふれ現象」が一部のみ生じた配列角度も判明したことから、前述の画線深度(h)、画線幅(W)及び印圧と同様、各条件により適切な配列角度を見いだせば、特に限定はなく、適宜設定すればよい。   As shown in Table 2, when the arrangement angle of the concave image line (12) is 45 ° or 90 ° and the arrangement angle of the intaglio image line (2) is 0 ° with respect to the printing direction (S2), “ The “overflow phenomenon” clearly occurs, and conversely, the two overflows are arranged at the same angle, that is, in a so-called completely overlapping arrangement, the “overflow phenomenon” does not occur. In addition, since the arrangement angle where only a part of the “overflow phenomenon” occurred was also found, an appropriate arrangement angle can be found depending on each condition as in the case of the image line depth (h), image line width (W), and printing pressure. If there is no particular limitation, it may be set as appropriate.

次に、潜像凹版模様(9)の作製方法について図8を用いて説明する。図8(a)は彩紋模様であり、彩紋模様(10)を構成する凹版画線(2)については、実験において、「あふれ現象」が生じない画線深度(h)及び画線幅(W)で線画データを作成する。「あふれ現象」が生じない画線深度(h)及び画線幅(W)については、前述した「あふれ現象」が生じる画線深度(h)及び画線幅(W)以外の範囲であれば、特に限定はない。   Next, a method for producing the latent image intaglio pattern (9) will be described with reference to FIG. FIG. 8A shows a stencil pattern. Regarding the intaglio image line (2) constituting the stencil pattern (10), the image line depth (h) and the line width at which no “overflow phenomenon” occurs in the experiment. Line drawing data is created in (W). The line depth (h) and the line width (W) where the “overflow phenomenon” does not occur are in a range other than the above-described line depth (h) and line width (W) where the “overflow phenomenon” occurs. There is no particular limitation.

図8(b)は潜像模様データ(20)を示し、図8(c)は潜像模様データ(20)を図8(a)の彩紋模様(10)に重ねた状態を示す。潜像模様データ(20)が重なっている領域の彩紋模様(10)の線画データを、潜像凹版模様領域(11)とすることによって、図8(d)の潜像模様線画データ(21)を作成する。次に、潜像凹版模様領域(11)内の線画データを、「あふれ現象」が生じる画線深度(h)及び画線幅(W)に少なくとも一方を変更する。必要に応じて、画線深度(h)及び画線幅(W)の両方を変更する。   FIG. 8B shows the latent image pattern data (20), and FIG. 8C shows the state in which the latent image pattern data (20) is superimposed on the chromatic pattern (10) of FIG. By setting the line drawing data of the chromatic pattern (10) in the area where the latent image pattern data (20) overlaps as the latent image intaglio pattern area (11), the latent image pattern line drawing data (21 of FIG. 8D) is obtained. ). Next, at least one of the line drawing data in the latent image intaglio pattern area (11) is changed to the drawing line depth (h) and the drawing line width (W) at which the “overflow phenomenon” occurs. If necessary, both the line depth (h) and the line width (W) are changed.

潜像凹版模様領域(11)内の画線幅(W)を変更する場合は、潜像凹版模様領域(11)外の画線幅(W)と異なるため、第1の観察方向(E1)から観察した際に、潜像凹版模様(9)の存在が確認されてしまうおそれがある。この対策の一例として、潜像凹版模様領域(11)内の画線幅(W)と同一な画線面積となるように、潜像凹版模様領域(11)以外の凹版画線(2)を加工する。   When the image line width (W) in the latent image intaglio pattern area (11) is changed, it differs from the image line width (W) outside the latent image intaglio pattern area (11), so the first observation direction (E1) When observed from above, the presence of the latent image intaglio pattern (9) may be confirmed. As an example of this countermeasure, intaglio image lines (2) other than the latent image intaglio pattern area (11) are arranged so as to have the same image area as the image line width (W) in the latent image intaglio pattern area (11). Process.

画線幅(W)が異なっても所定の範囲内で画線面積率を等しくする方法として、本出願人が既に開示している特願平06−206140のように、同じ長さにおいて二本線の画線幅(W)の合計と一本線の画線幅(W)とを等しくする方法が挙げられる。なお、あくまでもこの方法は一例であって、同一の画線面積率を形成可能であれば、これに限定はされない。これら一連の凹版画線データの作成は、線画生成ソフトによって行われる。   As a method for equalizing the image area ratio within a predetermined range even if the image line widths (W) are different, as shown in Japanese Patent Application No. 06-206140 already disclosed by the present applicant, two lines are used at the same length. A method of equalizing the total line width (W) and the line width (W) of a single line. This method is merely an example, and the method is not limited to this as long as the same image area ratio can be formed. The series of intaglio line data is created by line drawing generation software.

以下、前述の発明を実施するための形態にしたがって、具体的に作製した印刷物の実施例について詳細に説明するが、本発明は、この実施例に限定されるものではない。   Hereinafter, although the Example of the printed matter produced concretely according to the form for implementing the above-mentioned invention is demonstrated in detail, this invention is not limited to this Example.

アドビシステムズ社製のAdobe Illustratorを用い、凹版画線を複数配列して構成される、図3(a)に示すような彩紋模様(10)を作成した。彩紋模様(10)を構成する凹版画線(2)の画線幅は120μm、画線深度は30μmに設定した。   Using the Adobe Illustrator made by Adobe Systems Inc., a colored pattern (10) as shown in FIG. 3A composed of a plurality of intaglio image lines was prepared. The image line width of the intaglio image line (2) constituting the chromatic pattern (10) was set to 120 μm and the image line depth was set to 30 μm.

次に、潜像模様(5)をアルファベットの「H」と決め、「H」を表現するための潜像凹版模様領域(11)を作成した。なお、潜像凹版模様領域(11)は、線画作成時のマスクに相当する。この潜像凹版模様領域(11)を、彩紋模様(10)に重ね合わせた後、潜像凹版模様領域(11)内の画線を「あふれ現象」が発生するように、画線深度(h)を他の背景模様領域(4)と異ならせるため、30μmから70μmに変更した。なお、画線幅(W)は変更せず、120μmのままとした。   Next, the latent image pattern (5) was determined as the alphabet “H”, and a latent image intaglio pattern region (11) for expressing “H” was created. The latent image intaglio pattern region (11) corresponds to a mask for creating a line drawing. After this latent image intaglio pattern area (11) is overlaid on the chromatic pattern (10), the image depth in the latent image intaglio pattern area (11) is reduced so that an “overflow phenomenon” occurs. In order to make h) different from other background pattern regions (4), the thickness was changed from 30 μm to 70 μm. The image line width (W) was not changed and was kept at 120 μm.

こうして線画生成ソフトを用いて作成した彩紋模様(10)の画線データを用い、腐食法で黄銅板に凹版画線部を彫刻した。彫刻した黄銅板にクロムメッキを施し、凹版版面とした。   The intaglio image line portion was engraved on the brass plate by the corrosion method using the image line data of the chromatic pattern (10) created using the line image generation software in this way. The engraved brass plate was chrome plated to form an intaglio plate surface.

次に、公知の抄紙機を用いて坪量85g/mの上質紙を製造する工程で、図4(a)に示すような凹形状画線群(13)をすき入れによって形成し、基材(1)を作製した。凹形状画線群(13)を構成する凹形状画線(12)は、直線で形成した万線状であり、ピッチ(P1)を500μm、頂点部(14)の幅(W1)を300μm、底部(16)の深さを40μmとした。 Next, in the step of producing high-quality paper having a basis weight of 85 g / m 2 using a known paper machine, a concave shape line group (13) as shown in FIG. A material (1) was produced. The concave shape line (12) constituting the concave shape group (13) is a straight line formed with a straight line, the pitch (P1) is 500 μm, the width (W1) of the apex portion (14) is 300 μm, The depth of the bottom (16) was 40 μm.

なお、本実施例では、凹版版面を作製し、基材(1)を製造する工程においてすき入れにより凹形状画線群を形成したが、それぞれが別の工程で独立されているので、同時に行ってもよく、基材(1)を製造してから凹版版面を作製してもよい。   In this example, an intaglio plate surface was produced and a concave shape line group was formed by squeezing in the process of manufacturing the base material (1). Alternatively, the intaglio plate surface may be produced after the substrate (1) is produced.

製造した基材(1)を用いて、公知の凹版印刷機の版胴に作製した凹版版面を取り付け、凹版印刷を行った。印刷に使用した凹版インキは、酸化重合型インキを使用して、2000kgfの印圧で印刷した。   Using the manufactured base material (1), the prepared intaglio plate surface was attached to the plate cylinder of a known intaglio printing press, and intaglio printing was performed. The intaglio ink used for printing was printed using an oxidation polymerization type ink at a printing pressure of 2000 kgf.

印刷した印刷物を観察すると、基材(1)に対して第1の観察方向(E1)からは彩紋模様(10)が確認でき、潜像模様(5)は確認できなかった。その状態から観察角度を異ならせて基材(1)を斜めにして第2の観察方向(E2)から観察すると、彩紋模様(10)の中に「H」の文字の潜像模様(5)が確認できた。   When the printed matter printed was observed, the chromatic pattern (10) was confirmed from the first observation direction (E1) with respect to the substrate (1), and the latent image pattern (5) was not confirmed. When the observation angle is varied from that state and the base material (1) is inclined and observed from the second observation direction (E2), the latent image pattern (5) of the letter “H” in the colored pattern (10). ) Was confirmed.

1 基材
2 凹版画線
3 潜像模様領域
4 背景模様領域
5 潜像模様
6 背景模様
7 印刷物
8 凹版模様領域
9 潜像凹版模様
10 彩紋模様
11 潜像凹版模様領域
12 凹形状画線
13 凹形状画線群
14 頂点部
15 側部
16 底部
17 凹版画線群
18 あふれ部
19 交点
20 潜像模様データ
21 潜像模様線画データ
22 潜像凹版模様領域以外の領域
S1 第1の方向
S2 印刷方向
E1 第1の観察方向
E2 第2の観察方向
P ピッチ
W 幅
h 深さ
DESCRIPTION OF SYMBOLS 1 Substrate 2 Intaglio image line 3 Latent image pattern area 4 Background pattern area 5 Latent image pattern 6 Background pattern 7 Print 8 Intaglio pattern area 9 Latent image intaglio pattern 10 Color pattern 11 Latent image intaglio pattern area 12 Concave shape image line 13 Concave image line group 14 Vertex part 15 Side part 16 Bottom part 17 Intaglio image line group 18 Overflow part 19 Intersection 20 Latent image pattern data 21 Latent image pattern line drawing data 22 Area other than latent image intaglio pattern area S1 First direction S2 Printing Direction E1 First observation direction E2 Second observation direction P Pitch W Width h Depth

Claims (3)

基材上の少なくとも一部に、前記基材と等色の凹形状の画線が万線状に配置された凹形状画線群と、前記凹形状画線とは異なる色で凸形状の凹版画線が複数配置された凹版画線群を備えた凹版模様領域を有し、
前記凹形状画線群は、底部、側部及び頂点部が規則的に配列され、
前記凹形状画線群と前記凹版画線群は、前記頂点部の上に前記凹版画線の一部が交差した交点を複数有するように積層され、
前記凹版画線は、前記交点に隣接する前記凹形状画線の側部又は側部と底部に、前記凹版画線を形成している凹版インキが付着し、前記頂点部に交差している前記凹版画線の画線幅より太いあふれ部を備え、
複数の前記あふれ部により潜像凹版模様が形成され、
前記基材を傾けて観察すると、前記凹版模様領域内に前記潜像凹版模様が視認可能なことを特徴とする潜像凹版模様を有する印刷物。
A concave-shaped image line group in which concave-shaped image lines of the same color as the substrate are arranged in a line on at least a part of the substrate, and a concave groove having a color different from the concave-shaped image line. An intaglio pattern area having a group of intaglio image lines in which a plurality of print image lines are arranged;
The concave shape line group is regularly arranged at the bottom, the side and the apex,
The intaglio image line group and the intaglio image line group are laminated so as to have a plurality of intersections where a part of the intaglio image line intersects on the apex portion,
The intaglio image line has the intaglio ink forming the intaglio image line attached to the side or side and bottom of the concave shape image line adjacent to the intersection, and intersects the apex portion. It has an overflowing part that is thicker than the line width of the intaglio line,
A latent image intaglio pattern is formed by the plurality of overflow portions,
A printed matter having a latent image intaglio pattern, wherein the latent image intaglio pattern is visible in the intaglio pattern area when the substrate is tilted and observed.
前記潜像凹版模様が形成されている潜像凹版模様領域と、前記潜像凹版模様領域以外の領域の前記凹版画線の画線幅及び画線高さの関係は、
i)前記潜像凹版模様領域の前記凹版画線の画線幅と前記潜像凹版模様領域以外の前記凹版画線の画線幅は等しく、かつ、前記潜像凹版模様領域の画線高さは、前記潜像凹版模様領域以外の画線高さより高い、又は、
ii)前記潜像凹版模様領域の前記凹版画線の画線幅は、前記潜像凹版模様領域以外の前記凹版画線の画線幅より太く、かつ、前記潜像凹版模様領域の画線高さは、前記潜像凹版模様領域以外の画線高さは等しい、又は、
iii)前記潜像凹版模様領域の前記凹版画線の画線幅は、前記潜像凹版模様領域以外の前記凹版画線の画線幅より太く、かつ、前記潜像凹版模様領域の画線高さは、前記潜像凹版模様領域以外の画線高さより高いことを特徴とする請求項1記載の潜像凹版模様を有する印刷物。
The relationship between the latent image intaglio pattern area in which the latent image intaglio pattern is formed, and the line width and line height of the intaglio image line in areas other than the latent image intaglio pattern area,
i) The line width of the intaglio image line in the latent image intaglio pattern area is equal to the line width of the intaglio image line other than the latent image intaglio pattern area, and the line height of the latent image intaglio pattern area. Is higher than the image line height other than the latent image intaglio pattern area, or
ii) The line width of the intaglio image line in the latent image intaglio pattern area is larger than the line width of the intaglio image line other than the latent image intaglio pattern area, and the line height of the latent image intaglio pattern area The image line height other than the latent image intaglio pattern area is equal, or
iii) The line width of the intaglio image line in the latent image intaglio pattern area is larger than the line width of the intaglio image line other than the latent image intaglio pattern area, and the line height of the latent image intaglio pattern area The printed matter having a latent image intaglio pattern according to claim 1, wherein the printed image has a height higher than an image line height other than the latent image intaglio pattern region.
前記凹版画線の画線幅は、前記潜像凹版模様領域と前記潜像凹版模様領域以外の領域において、一定の範囲内における画線面積率が等しいことを特徴とする請求項1又は2記載の潜像凹版模様を有する印刷物。   3. The image line width of the intaglio image line is equal to an image line area ratio within a certain range in the latent image intaglio pattern region and a region other than the latent image intaglio pattern region. Printed matter having a latent image intaglio pattern.
JP2016170808A 2016-09-01 2016-09-01 Print having latent image intaglio printing pattern Pending JP2018034466A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019155841A1 (en) 2018-02-07 2019-08-15 ソニーセミコンダクタソリューションズ株式会社 Solid-state image sensor and imaging device
CN111098617A (en) * 2020-01-09 2020-05-05 武汉红金龙印务股份有限公司 Latent image embossing anti-counterfeiting structure and preparation process thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019155841A1 (en) 2018-02-07 2019-08-15 ソニーセミコンダクタソリューションズ株式会社 Solid-state image sensor and imaging device
CN111098617A (en) * 2020-01-09 2020-05-05 武汉红金龙印务股份有限公司 Latent image embossing anti-counterfeiting structure and preparation process thereof

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