JP4319802B2 - Printing method of pearl-like printed matter and alignment mark used therefor - Google Patents

Description

【００２６】
得られたパール印刷物は輝度の高いパール色調を示し、十分なパール光沢も得られた。また、パール印刷部の印刷見当が、良く視認できたので、顕著な見当不良状態は生じなかった。
【００２７】
本発明の印刷方法は、上述のような特徴を有するので、商品券、株券、入場券、乗車券、チケット類、および証明書等の重要書類、およびキャッシュカード、クレジットカード、定期券、ＩＤカード等のカード類等の複写防止機能および意匠性が要求される各種印刷物や、包装材料、商業印刷物、書籍刊行物等の各種印刷物の印刷に使用できる。
【００２８】
【発明の効果】
上述のように、本発明のパール調印刷物の印刷方法では、パール印刷の位置ずれを確認し易い位置合わせ用マークを用いるので、パール印刷の位置ずれを容易に確認することができ、印刷不良を生じることが少ない。
【図面の簡単な説明】
【図１】 ベタ柄からなる位置合わせ用マークの例を示す図である。
【図２】 位置合わせ用マークの他の例を示す図である。
【図３】 位置合わせ用マークの使用例を示す図である。
【図４】 本発明の印刷方法の実施例を示す図である。
【図５】 従来の「十」字線状の位置合わせ用マークを示す図である。
【符号の説明】
１，１ｐ パール印刷の位置合わせ用マーク（見当トンボ）
２，２ｃ，３ 色印刷の位置合わせ用マーク（見当トンボ）
４ 通常の位置合わせ用マーク
５ 用紙
６ 仕上がり部分[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a printing method of a pearl-like printed matter and an alignment mark.
In many cases, the pearl-like printed matter is a printed matter in which the general color printing ink and the pearl ink are overprinted. However, since the pearl ink is generally a light color, it is often difficult to confirm the positional deviation between the two. Therefore, an attempt is made to easily and surely perform the alignment by improving the printing alignment mark.
Therefore, the fields of use of the present invention include gift certificates and securities, stock certificates, admission tickets, tickets such as tickets, and other important documents such as receipts, invoices, receipts, specifications, other certificates, etc. The present invention also relates to the field of manufacture and use of printed materials such as cash cards, credit cards, commuter passes, ID cards, and the like that require copy protection functions and design, and various printed materials such as commercial printed materials and book publications.
[0002]
[Prior art]
Printing inks containing pearl pigments have traditionally existed as silkscreen printing or gravure printing inks, and have a high anti-counterfeiting effect by preventing the copying of cash vouchers and cards. Since it can be applied, it has been conventionally used for these various printed materials.
However, in recent years, there has been a demand for practical application of pearl ink in letterpress printing and planographic printing, which can further increase efficiency in terms of plate making work and printing speed.
[0003]
Prior arts of this pearl ink include JP-A-7-34021 “Offset printing ink” and JP-A-2001-240786 “Pearl ink for printing and pearl-like printed matter”.
JP-A-7-34021 discloses a lithographic printing ink containing a pearlescent pigment, and JP-A-2001-240786 uses a binder component having an unsaturated bond such as ultraviolet curable. Proposes pearl ink. According to the pearl ink, high-speed rotary offset printing and printing on a plastic sheet, which have been impossible in the past, will be possible.
Therefore, in the case of lithographic printing and letterpress printing, the amount of ink transfer is larger than the lithographic printing conditions generally used because the amount of ink transfer is small in principle compared to the case of silk screen printing or gravure printing. It is necessary to increase the brightness of the pearl print pattern by a method or a method of printing the pattern by multiple times.
[0004]
When printing with a larger amount of ink than the general printing conditions, the pearl ink adhering to the image area of the printing plate protrudes to the non-image area due to the printing pressure. Since the pattern formed on the base material has a thick shape, it is necessary to devise a design that makes the thickness inconspicuous.
Also, in the case of a technique for increasing the brightness by printing the same pattern a plurality of times, it is required that the registration of the patterns to be printed is not shifted so as not to impair the appearance. It is difficult to completely control the misregistration, and an alignment method and an alignment mark that can highly identify the misregistration are required.
[0005]
[Problems to be solved by the invention]
Conventionally, various forms of printing alignment marks (generally also referred to as “registered marks”, so the expression is also used) have been used. Such a “ten” -shaped linear mark or a linear mark including a “ten” -shaped linear shape is often used.
These are intended to match the positional accuracy in the horizontal direction with the deviation of the vertical line of the “10” line, and match the positional accuracy in the vertical direction (print progress direction) with the deviation of the horizontal line. In the case of normal multicolor printing, the registration marks 2 and 3 are printed with dark ink, so that the registration error amount between the two colors can be easily visually recognized as shown in FIG.
However, in the case of a light color ink such as pearl ink, the register mark is also printed in a light color as shown in FIG. 5B. Even when the printed matter is observed in a stationary state, it becomes difficult.
[0006]
In particular, when printing continuous paper such as gravure printing or off-wheel, the register paper must be quickly observed by the naked eye while the printing paper is running on the printing press. Is not visible, there is a problem that a large amount of misprinted printed matter occurs.
In particular, in order to facilitate visual recognition when observing such traveling paper, there is also a means for observing the registration mark by mixing a fluorescent agent in printing ink, irradiating it with black light in the dark, and emitting light. Has been done.
However, such means has a problem that a special ink or apparatus is required.
[0007]
Therefore, in the present invention, even in light color printing such as pearl ink, research is conducted to find an alignment mark that makes it easy to visually recognize a registration error and a printing method without using special ink or equipment. Thus, the present invention has been completed.
[0008]
[Means for Solving the Problems]
The first of the gist of the present invention to solve the above problems is
In the method of printing a pearl-like printed matter, the printing alignment between the pearl ink printing plate and the printing plate of other ink is made from a solid pattern consisting of any one of square, rhombus, circle, ellipse, and other polygons. and alignment mark having the same cardiac circle line or concentric squares line vent therein becomes a mark for normal printing alignment includes a cross line shape, in combination subjected to the mark the alignment sheet A method for printing a pearl-like printed matter, characterized in that it is performed by arranging two pieces on the left and right sides of the finished portion assigned to the paper .
Since this printing method is used, it is possible to easily check misregistration and to obtain a printed matter with little misregistration.
[0011]
The second of the gist of the present invention is a mark for alignment in the case of printing a pearl-like printed matter, and is a solid pattern made of any one of a square, a rhombus, a circle, an ellipse, and other polygons. , inside have a same heart circle line or concentric squares line of the punching, the alignment marks, characterized in that it is arranged two by two on the left and right sides of the finished part assigned to sheet paper in.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
As described above, in pearl printing, when printing is performed with a larger amount of ink than in general printing conditions, ink overflow and pattern fattening often occur. Therefore, a technique of increasing the brightness by printing the same pearl pattern on top of each other is employed, but it is required that the registration of the patterns to be printed on top of each other is not shifted.
As a result of trying a method for realizing high-brightness pearl printing by flexographic printing, letterpress printing, offset printing, and gravure printing, it was found that the alignment accuracy can be improved by the following method, and therefore an embodiment thereof will be described. .
[0013]
(1) For alignment of printing positions between the pearl ink printing plate and the printing plate of other ink, use a mark for alignment consisting of a solid pattern consisting of any of square, rhombus, circle, ellipse and other polygons. Use to print. The solid pattern means that the inside of the contour is not a linear contour pattern but is filled in solid as an ink adhering portion.
FIG. 1 is a diagram illustrating an example of an alignment mark made of a solid pattern, and FIG. 2 is a diagram illustrating another example of the alignment mark. FIG. 3 is a diagram illustrating a usage example of the alignment mark.
As shown in FIG. 1, in the first embodiment of the printing method of the pearl-like printed matter, solid pattern alignment marks such as a square (a), a rhombus (b), or a circle (c) or an ellipse (d) are used. It is considered that the mark may be a triangle, hexagon, or other polygonal mark.
This alignment mark is used for both the pearl ink printing plate and the general color ink printing plate.
[0014]
After printing, as shown in FIG. 3A, the pearl printing alignment mark 1P to be printed later is overprinted on the alignment mark 2C of the general color printing ink printed earlier. . In addition, since pearl ink needs to appear on the outermost surface of printed matter, when overprinting is often performed later.
The misalignment in the case of FIG. 3A using a square register mark appears as if the alignment mark 2C for color printing is seen from the bottom side of the pearl printing as shown in the figure. The mark 1P is printed over the register mark for color printing. In the alignment mark 1P for pearl printing, a misaligned portion 1S appears at the diagonal portion of the alignment mark 1C for color printing.
In this way, when using a registration mark consisting of a solid pattern with a specific shape, the amount of misregistration can be easily confirmed with the naked eye, so the misregistration can be identified to a higher degree than in the case of a simple “10” line mark. it can.
[0015]
If there are two or more pearl prints (including when printing in colorless or light color at the same time), how each of the pearl print plates with multiple solid alignment marks is misregistered Therefore, as many solid alignment marks as the number of pearl printing plates are provided.
FIG. 3B is a diagram showing an example, in which there are two versions of pearl printing for one color printing. The color printing plate is provided with two square alignment marks 2C and 3C, the first plate for pearl printing is provided with the square alignment mark 11P, and the second plate is provided with the alignment mark 12P. ing. Arrow Y indicates the direction of printing.
In the case of FIG. 3B, the first version of pearl printing is displaced on the delayed side with respect to the color printing plate, but the second version is displaced on the advanced side with respect to the color printing plate. is doing. Any shift in the left-right direction is shifted to the right.
[0016]
(2) The printing position alignment between the pearl ink printing plate and the printing plate of other inks is a solid pattern consisting of any one of a square, rhombus, circle, ellipse, or other polygonal shape, and a cross cut out inside Print using alignment marks with lines, x-lines or concentric circles.
FIG. 2 is a diagram illustrating an example of an alignment mark having a cross line, an X-shaped line, or a concentric circle line in a solid pattern.
As shown in FIG. 2, in the second embodiment of the printing method of the pearl-like printed matter, the crosshair (a) and the X-shaped line (g) are squared, the X-shaped line (b) is the diamond-shaped line, the crosshair (h), and the circular shape. Are printed using a shape such as a concentric circle (c), a square with a cross and a concentric square (d), a circle with a cross and a concentric circle (f), and an ellipse with a cross (i).
In the case of these shapes, the distance between the cross lines can be measured when there is a positional deviation, so that the positional deviation amount can be grasped regardless of the sense.
The method of using the registration mark in FIG. 2 is the same as that in the first embodiment.
In addition, you may use together and use the mark for printing position alignment containing a normal crosshair shape etc. This is because normal register marks may be easy to see between color prints.
[0017]
By the way, in flexographic printing, letterpress printing, offset printing, and gravure printing using such pearl ink, various inks developed for pearl printing can be selected and used.
The pearl ink is classified mainly by the drying form of the ink. (1) UV curable ink, (2) Oxidation polymerization ink, (3) Evaporation drying ink, (4) Penetration drying ink, (5) Heat set type Ink can be classified.
Each has the following characteristics.
[0018]
(1) Ultraviolet curable ink This type of ink is an ink that is cured by irradiating with ultraviolet rays, which is a type of electromagnetic wave, and is used for business forms, general packaging materials, printed boards, various coatings, and the like. Suitable for drying printed materials that cannot be heated. A sensitizer is blended with a polyfunctional monomer and an acrylate oligomer. When irradiated with ultraviolet rays, the sensitizer forms a radical and causes a chain reaction of the oligomer and the monomer. It is said that the curing speed is influenced by the difference in ultraviolet absorption of the pigment, and it is necessary to adjust the amount and combination of sensitizers.
[0019]
As an ultraviolet curable ink for high-speed off-wheel printing, Japanese Patent Application Laid-Open No. 2001-240786 states, “At least (a) a binder component of 25 to 95 weight consisting of one or more monomers or oligomers having one or more unsaturated bonds. And (b) a pearl ink for printing characterized in that it comprises a composition comprising 5 to 60 parts by weight of a pearl pigment.
Based on the technology of the application, a printed matter having a sufficient pearly luster and a cured film has been obtained with a printing ink using an oligoester acrylate or a polyol acrylate as a binder. The ink can be printed on any material such as paper or plastic.
[0020]
In this case, the printing itself is carried out in the same way as normal printing. After printing, the ink coating film is irradiated with an electron beam or ultraviolet ray immediately by an electron beam irradiator or ultraviolet irradiator previously set on the discharge side. A pearl-like print can be obtained by curing. After printing, the ink has been cured, so it is possible to stack and wind up printed matter, whether printing on plastic with a sheet-fed press or printing on paper or plastic film with a high-speed rotary press. There is no ink sticking.
In the case of printing on plastic cards and plastic sheets, ultraviolet rays and electron beam curable ink are often used.
[0021]
(2) Oxidative polymerization type ink This type of ink forms a film by solidification and insolubilization of the vehicle by oxidative polymerization. Ink containing dry oil varnish, dry alkyd, etc., falls into this category. Examples include general lithographic inks and letterpress inks. There are so-called quick set inks that include some high-boiling point petroleum in lithographic inks and letterpress inks, but these are also finally dried by oxidative polymerization.
Although this type of ink can be applied to offset printing, it is preferably used for sheet-fed printing and relatively low-speed rotary printing.
[0022]
(3) Evaporative drying ink This type of ink is a solid resin that forms a film by volatilization of the solvent in the vehicle, such as gravure, flexo and silk screen inks. It has the property of drying quickly at room temperature.
In the present invention, it can be suitably used for flexographic paper printing using an alcohol solvent.
(4) Penetration drying type ink This type of ink refers to an ink that adheres and dries when a low viscosity component in the ink penetrates into the material to be printed. The ink printed on paper penetrates due to printing pressure. It gradually penetrates and sets after printing. In this type of ink, after printing, the low-viscosity component of the vehicle penetrates into the paper, and the pigment is fixed in the fiber gap by a fixing component or the like.
Therefore, it is often used for printing on porous, highly permeable medium paper, rough paper, and the like.
(5) Heat-set type ink This type of ink refers to an ink that softens when heated and solidifies when cooled. Used for relatively high-speed printing of planographic and letterpress. As the vehicle, wax, vegetable oil, mineral oil or petroleum solvent is used.
This type of ink is often used for printing pressure-sensitive copying layers on delivery slips.
[0023]
The pearl ink is obtained by coating the outside of fine flakes (flakes) with a metal oxide or a mixture of metal oxides in various types of ink binders as described above. Examples of fine flakes include mica, talc, kaolin, bismuth oxychloride, glass flakes, SiO ₂ flakes, and synthetic ceramic flakes. Examples of metal oxides that coat the outside of these fine flakes Are TiO ₂ , Fe ₂ O ₃ , SnO ₂ , CrO ₃ , and ZnO.
Among these combinations, mica, glass flakes, or SiO ₂ flakes coated with TiO ₂ and / or Fe ₂ O ₃ are preferable. The size of the individual flakes of the pearl pigment is 1 to 100 μm.
[0024]
【Example】
(Example)
An embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 4, six finished portions 6 were assigned to the sheet 5 and printing using two pearl printings was performed. Two solid alignment marks 1 and 2 were arranged on the left and right of each finished part, and printing was performed using a normal alignment mark 4 in combination. By arranging two solid alignment marks 1 and 2 on the left and right sides, there is an advantage that it is easy to confirm even when twisting caused by plate making or plate attachment occurs.
[0025]
A commercially available pearl pigment was used for printing, an ultraviolet curable ink having the following composition was prepared, and printing was performed using an offset printer.
The paper 5 was coated paper (64 g / m ² ).
For printing, a fine printed portion was printed using a normal offset printing ink, and then two pearl plates were used, and printed twice with registration.

[0026]
The obtained pearl print exhibited a pearl color tone with high brightness, and sufficient pearl luster was also obtained. Moreover, since the printing register of the pearl printing part was able to be visually recognized well, the remarkable registration defect state did not arise.
[0027]
Since the printing method of the present invention has the above-described features, important documents such as gift certificates, stock certificates, admission tickets, tickets, tickets, and certificates, and cash cards, credit cards, commuter passes, ID cards, etc. It can be used for printing various printed materials such as cards, etc., which require a copy-preventing function and design properties, and various printed materials such as packaging materials, commercial printed materials, and book publications.
[0028]
【The invention's effect】
As described above, in the printing method of the pearl-like printed material according to the present invention, since the alignment mark for easily confirming the misalignment of the pearl printing is used, the misalignment of the pearl printing can be easily confirmed, and the printing defect can be prevented. Less likely to occur.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an example of an alignment mark made of a solid pattern.
FIG. 2 is a diagram illustrating another example of an alignment mark.
FIG. 3 is a diagram illustrating an example of use of an alignment mark.
FIG. 4 is a diagram illustrating an embodiment of a printing method according to the present invention.
FIG. 5 is a diagram showing a conventional “ten” -shaped alignment mark;
[Explanation of symbols]
1,1p Pearl printing alignment mark (registered dragonfly)
2, 2c, 3-color printing alignment mark (register mark)
4 Normal alignment mark 5 Paper 6 Finished part

Claims (2)

In the method of printing a pearl-like printed matter, the printing alignment between the pearl ink printing plate and the printing plate of other ink is made from a solid pattern consisting of any one of square, rhombus, circle, ellipse, and other polygons. and alignment mark having the same cardiac circle line or concentric squares line vent therein becomes a mark normal printing position alignment, in combination with the performed including crosshairs shape,
A method for printing a pearl-like printed material, wherein two alignment marks are arranged on the left and right sides of a finished portion assigned to a sheet . A mark for alignment when printing a pearl printed matter, square, rhombic, circular, oval, be other solid pattern consisting of either the shape of a polygon, the punching inside Kokoroensen or have a concentric squares line, alignment marks, characterized in that it is arranged two by two on the left and right sides of the finished part assigned to sheet paper.

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