JPH05246188A - Releasable printed matter - Google Patents

Abstract

PURPOSE:To inexpensively obtain printed matter having concealed data easy to handle and capable of being inserted even in a magazine by obtaining the printed matter having concealed data by one printing method and making a concealing layer hard and strong and easily developing the concealed data if necessary. CONSTITUTION:An oily medium layer 4 is provided on paper inclusive of a display ink layer 3 having data such as a character, a mark or a figure displayed thereon and a transparent ultraviolet curable ink layer 5 cured by the irradiation with ultraviolet rays is provided on the oily medium layer 4 and, further, a concealing layer 6 concealing at least the data displayed part of the display ink layer 3 is provided on the ultraviolet curable ink layer 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly uses an adhesive tape to remove a concealing layer utilizing delamination, and a concealing layer capable of removing the concealing layer by scratching (actively scratching) with a nail or a coin. The present invention relates to a printed matter having a portion.

[0002]

2. Description of the Related Art Conventionally, as a printed matter that can be used in speed lottery, games, etc., a transparent resin layer is provided on the surface of paper on which information such as characters, symbols and figures is printed.
Further, a printed matter having a layer structure in which an information marking portion such as characters, symbols, and figures is concealed by an opaque layer which is solidly printed on the transparent resin layer is disclosed in, for example, Jitsuko Sho 48-284.
No. 53 is shown. Since the adhesiveness between the transparent resin layer and the opaque layer is low, the opaque layer is scraped off with nails, coins or the like to expose the concealed portion during use.

[0003]

However, in the above-mentioned printed matter, information such as characters, symbols and figures is printed on a paper by a lithographic offset printing method, and a transparent resin layer and a concealing ink by a transparent varnish are formed on the information. The concealing layer is formed by a gravure printing method or a screen printing method for reasons such as quick drying property, printability, and concealing property of a relatively soft ink in consideration of scratching property using nails or coins. Therefore, the equipment of two types of printing devices (planographic offset printing device for printing information and gravure printing device or screen printing device for providing transparent resin layer or concealment layer) with high plate cost and not suitable for mass production There is a problem that leads to cost increase, such as being necessary, and obtaining semi-finished products from lithographic offset printing equipment,
This will be set in a gravure printing device or a screen printing device, it will not be manufactured from a consistent printing process,
It required complicated work.

On the other hand, there is a demand that the printed matter produced by the above method is not handled as a single item but can be bound in a magazine or the like. However, the opaque layer, that is, the concealing layer is a nail or a coin. Since it is relatively soft considering the scratchability using, it is liable to be scratched by rubbing against other cloves during the process of bookbinding, and the function and appearance as a hiding layer are easily damaged. Is. Therefore, it is possible to make the hiding layer hard and strong, but this causes a problem that the scratching property is extremely lowered, and thus the printed matter having the above-mentioned configuration in which information is hidden by the hiding layer is used. I couldn't bind it in the magazine.

In view of the above situation, therefore, the present invention is to obtain a concealment information by one printing method, to make the concealment layer hard and tough, and to easily display concealment information when necessary. It is an object of the present invention to provide a printed matter having hidden information that is easy to handle and can be bound in a magazine at low cost.

[0006]

The present invention has been made in consideration of the above-mentioned problems, and comprises a display ink layer on which information such as characters, symbols and figures provided on a paper is marked, and the display ink layer. Including an oil-based medium layer provided on paper, an ultraviolet-curable ink layer provided on the oil-based medium layer and cured by ultraviolet irradiation, and an information mark comprising at least the display ink layer on the ultraviolet-curable ink layer It is intended to solve the above-mentioned problems by providing a printed material having a peelable surface layer, which comprises a hiding layer provided so as to conceal a portion.

[0007]

In the present invention, there is reciprocity between the oil-based medium layer and the UV-curable ink layer, that is, the UV-curable ink layer exhibits low adhesion and low adhesion to the oil-based medium layer. Thus, the ultraviolet curable ink layer can be delaminated from the oily medium layer. Then, for example, when an adhesive tape is stuck on the hiding layer and peeled off, delamination occurs between the two, and the hiding layer at the part where the adhesive tape is stuck peels off together with the ultraviolet curable ink layer.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail based on an embodiment shown in FIGS. In the figure, 1 is a printed matter having concealment information, and the printed matter 1 is on a paper 2 as shown in FIG.
A display ink layer 3 on which information such as characters, symbols, and figures provided by an offset printing method is marked, and a paper 2 on which nothing is printed so as to cover the display ink layer 3.
An oil-based medium layer 4 provided by the offset printing method so as to extend over the surface, and an ultraviolet-curable ink provided by the offset printing method so as to cover the oil-based medium layer 4 by the offset printing method, and ultraviolet rays cured by ultraviolet irradiation. The curable ink layer 5 and the information marking portion consisting of the display ink layer 3 on the ultraviolet curable ink layer 5 are concealed and also concealed on the ultraviolet curable ink layer 5 having no display ink layer 3. The ink is laminated with a concealing layer 6 provided by an offset printing method.

In the printed matter 1 having this layer structure, the oil-based medium layer 4 and the ultraviolet-curable ink layer 5 have a relationship of low adhesion and low adhesiveness due to their respective physical properties, and interlayer peeling is easy between them. In this state, the hiding layer 6 can be removed together with the ultraviolet curable ink layer 5 from the surface side by means such as an adhesive tape, a nail or a coin. Here, the oily medium layer 4 and the ultraviolet curable ink layer 5 are preferably transparent or semi-transparent, but a hiding property and the like may be improved by mixing a coloring material or the like within a range that does not hinder delamination. The releasability between the two can be used regardless of the presence or absence of the display ink layer 3. For example, if you make a lottery from this printed material,
It does not make a difference in peelability between (there is a display ink layer) and “remove” (there is no display ink layer), so it is possible not to judge in advance whether it is due to this difference in ease of peeling. it can.

Since the delamination is utilized in the printed matter 1 produced in this way, the softness required in the conventional hiding layer is not required, and the hiding layer 6 has fast drying property, printability and hiding property. You can select important inks. As a result, the display ink layer 3, the oily medium layer 4, the ultraviolet curable ink layer 5, and the masking layer 6 can all be consistently produced by the offset printing method as described above, and can be obtained by a normal offset printing apparatus. A hard hiding layer can be formed by selecting a hiding ink. In addition, because of the ease of delamination between the oil-based medium layer 4 and the ultraviolet-curable ink layer 5, if an ultraviolet-curable ink layer is obtained, releasability can be achieved without waiting for printing or drying of the hiding layer 6. Can be confirmed, and the quality assurance of printed matter can be reasonably managed.

By the way, in order to maintain constant delamination between the oily medium layer 4 and the ultraviolet curable ink layer 5, it is necessary to adjust the amount of ink when these layers are printed. It becomes particularly important in an offset printing apparatus in which the amount of ink transferred to paper changes delicately depending on various conditions inside. As shown in FIG. 6, color patches 7 and 8 of an oil-based medium layer and an ultraviolet curable ink layer are provided outside the pattern, and their reflection density and gloss value are measured using a densitometer or gloss meter during printing. Can be managed by doing. It should be noted that the effect of coloring is not left in the design as in the case where each transparent layer is colored to visually check the shade of the color, and the ink amount can be managed more accurately.

The ink composition of each layer for obtaining the above-mentioned printed matter will be exemplified below. The display ink layer may be obtained by a printing method other than the offset printing method, and can be appropriately selected from various printing methods such as a gravure printing method and a screen printing method. Also, the ink used can be appropriately selected depending on the printing method. The oil-based offset ink used for forming the oil-based medium layer is preferably a transparent or semi-transparent one that does not contain a coloring material such as OP varnish or medium, but it may interfere with reading of information in the display ink layer or delamination. You may mix a coloring material etc. within the range which does not exist. As the ink component to be used, known ones usually used for offset printing can be selected. That is, as the resin, there are rosin-modified phenol resin, alkyd resin, petroleum resin and the like, and as the drying oil and semi-drying oil, linseed oil, tung oil,
There are soybean oil, saffral oil, castor oil, and the like, and the solvent includes a petroleum solvent having a boiling point of 200 to 350 ° C. Furthermore, for example, wax, grease, a desiccant, a gelling agent, an extender pigment, and other known substances can be used as necessary.

The ink for forming the UV-curable ink layer is preferably transparent or semi-transparent without containing a coloring material such as OP varnish and medium, but a coloring material may be mixed within a range that does not hinder delamination. Good. As the ink component to be used, a known component conventionally used for offset printing can be selected. That is, the prepolymer includes epoxy acrylate, urethane acrylate, polyester acrylate, etc., and the monomer includes methyl (meth) acrylate, ethylene glycol, di (meth) acrylate, totimerol propane, tri (meth) acrylate, etc. Examples of the sensitizer include benzophenol, 4,4-bisditylaminobenzophenol and thioxanthone. Further, for example, a wax, a plasticizer, a thermal polymerization inhibitor, an extender pigment, and other known substances can be used if necessary. The ink for forming the concealing layer may be an ink having a high concealing property, and an appropriate ink can be adopted. Also, the printing method is not limited.

[0014]

As described above, according to the present invention, a peelable printed matter has a display ink layer on which information such as characters, symbols, and figures is marked, and the display ink layer. Including an oil-based medium layer provided on paper, an ultraviolet-curable ink layer provided on the oil-based medium layer and cured by ultraviolet irradiation, and an information mark comprising at least the display ink layer on the ultraviolet-curable ink layer And a concealing layer provided so as to conceal the portion. This facilitates delamination between the oil-based medium layer and the UV-curable ink layer, and the hidden layer can be removed together with the UV-curable ink layer by utilizing this delamination when exposing hidden information. Like Therefore, in the concealing layer, it is not necessary to consider the easiness of scratching, and the concealing layer can be made strong, so that the printed matter can be bound in a magazine or the like. In addition, it becomes possible to select inks for forming the concealing layer and inks for forming other layers, which correspond to the printing method. For example, by making all the inks compatible with the offset printing method, it is possible to produce the printed matter. Since it can be performed with one printing device, the manufacturing cost can be significantly reduced compared to the conventional one, and the specifications are such that even nails and coins can be scratched by setting the ink type and ink thickness. It is also easy to use and has an effect of excellent practicality.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a state in which a display ink layer is provided in a printed matter that is easily peeled off according to the present invention.

FIG. 2 is an explanatory view showing a state in which an oily medium layer is provided in the same printed matter.

FIG. 3 is an explanatory diagram showing a state in which an ultraviolet curable ink layer of a printed matter is provided.

FIG. 4 is an explanatory view showing a state in which a concealing layer of a printed matter is also provided.

FIG. 5 is an explanatory diagram showing a state in which a printed matter is delaminated.

FIG. 6 is an explanatory diagram showing a state in which color patches are provided when creating a printed matter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Printed matter 2 ... Paper 3 ... Display ink layer 4 ... Oily medium layer 5 ... UV curable ink layer 6 ... Concealment layer 7, 8 ... Color patch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Sanada 1-5-1, Taito, Taito-ku, Tokyo Within Toppan Printing Co., Ltd. (72) Inventor Tsuneo Suzuki 2-3-13, Kyobashi, Chuo-ku, Tokyo In Toyo Inki Manufacturing Co., Ltd. (72) Inventor Yoshiaki Miyauchi 2-33 Kyobashi, Chuo-ku, Tokyo Toyo Inki Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A display ink layer on which information such as characters, symbols, and figures is provided on paper, an oil-based medium layer provided on the paper including the display ink layer, and provided on the oil-based medium layer. And a UV-curable ink layer cured by UV irradiation, and a concealing layer provided on the UV-curable ink layer so as to conceal at least the information-marking portion composed of the display ink layer. A printed material in which the characteristic hiding layer can be peeled off.