JP2017001197A - Scratch printed matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scratch printed matter which prevents a latent image from being raised even by black light irradiation without accompanying increase of printing process and used amount of ink or the like.SOLUTION: A scratch printed matter as the printed matter having a latent image which is actualized when a printing area including the latent image is rubbed with a coin or a hard piece, etc. of material having a hardness of the same degree with the coin is composed of a printing substrate containing a fluorescent agent and the latent image printed by an ink containing the material having a hardness higher than that of the coin and the fluorescent agent on a surface of the printing substrate.SELECTED DRAWING: Figure 2

Description

  The present invention is a scratch printing which is a kind of special printing in which a character or design printed on paper is hidden by applying a special process to a portion on the printing surface and the character or design appears when rubbed with a coin or the like. About.

  In the past, scratch printing, in which characters and patterns were hidden with ink containing silver powder, had the disadvantage of scraping when scraping with coins. Therefore, in recent years, scratch printing has been developed in which scraping does not occur even when rubbed with a coin.

  For example, in Patent Document 1, a latent image is printed with ink of the same color as that of a printing substrate including titanium oxide having a hardness higher than that of a coin on a printing substrate, and the printing area including the latent image is rubbed with a coin. The technology of coloring and revealing latent images by dirt and scraped metal on the coins is disclosed.

  However, in the technique of Patent Document 1, a latent image can be visually recognized without being rubbed by irradiating with black light (ultraviolet light). This is because the fluorescent material contained in the white paper, which is the printing medium, emits light when irradiated with black light, whereas the ink on which the latent image is printed does not emit light when irradiated with black light, so that the latent image appears black.

  To deal with this problem, Patent Document 2 discloses a scratch printed matter in which a base layer printed with a white ink containing titanium oxide is disposed, and a negative pattern of a latent image is drawn thereon with a mat varnish layer softer than a coin. ing. When this scratch printed matter is rubbed with a coin, the stain on the titanium oxide-containing white ink left by the negative pattern adheres to the coin varnish, while the mat varnish layer does not peel off even if rubbed against the coin and the stain on the coin does not adhere. The latent image becomes obvious. In addition, the underlayer shields the light emitted from the fluorescent material contained in the paper when irradiated with black light and does not emit light because it does not contain a fluorescent agent. In addition, the mat varnish layer does not contain any fluorescent agent and does not emit light. We have proposed a technology that prevents images from appearing black.

Japanese Patent Publication No. 6-78039 Japanese Patent No. 4577909

  Although the technology of Patent Document 2 can prevent the latent image from being exposed by black light irradiation, as described above, it is necessary to dispose each layer of the solid printing underlayer and the mat varnish layer, and the printing process and There is a problem that the amount of ink used increases and tends to be expensive. Therefore, an object of the present invention is to provide a scratch printed matter in which a latent image does not appear even when irradiated with black light without increasing the amount of use of the printing process and ink.

  Therefore, the following inventions and the like are provided as means for solving the above problems. That is, a scratch printed matter in which a latent image is revealed by rubbing a printing region including the latent image with a coin or a coin having a hardness comparable to that of a coin, and a printing base material containing a fluorescent agent; The present invention provides a scratch printed matter comprising a latent image printed with an ink containing a material harder than the coin or the like and a fluorescent agent on the surface of a printing substrate.

  Further, in the above-described scratch printed matter, the fluorescent agent contained in the ink provides a scratch printed matter that is contained at the same level as the fluorescent agent contained in the printing substrate. Further, the present invention provides a scratch print having a varnish negative pattern obtained by printing a negative pattern area of a latent image in a print area with a varnish. In the above-mentioned scratch printed matter, there is also provided a scratch printed matter described by printing a pattern with colored ink having a hardness lower than that of the coin or the like on a print region including a latent image.

  Also, a method for producing a scratch printed material in which a latent image is made visible by rubbing a print region including the latent image with a coin or a coin having a hardness comparable to that of a coin, and includes a fluorescent agent. A latent image is printed with an ink containing a material harder than the above-mentioned coins and the like and a fluorescent agent on the surface of the printing substrate prepared in the printing substrate preparing step and the printing substrate preparing step. And a latent image printing step. A method for producing a scratch printed matter is provided.

  Moreover, in the manufacturing method of said scratch printed matter, the manufacturing method of the scratch printed matter which further has the varnish printing step which prints the negative pattern area | region of the latent image in a printing area | region with a varnish. Further, in the above-described scratch printed matter manufacturing method, a pattern printing step of printing a pattern with colored ink having a hardness lower than that of the coin or the like on a printing region including the latent image printed in the latent image printing step, Furthermore, the manufacturing method of the scratch printed matter which has is provided. Moreover, in the manufacturing method of said scratch printed matter, the fluorescent agent contained in an ink provides the manufacturing method of the scratch printed matter contained with the content rate comparable as the fluorescent agent contained in the said printing base material.

  According to the present invention, it is possible to provide a scratch printed matter in which a latent image does not become apparent even when irradiated with black light, without an increase in the printing process and the amount of ink used.

FIG. 3 is a conceptual diagram illustrating an example of a usage mode of a scratch printed matter according to the first embodiment. FIG. 2 is a conceptual diagram showing a cross section of the scratch printed matter of Embodiment 1. The conceptual diagram which shows the cross section of the scratch printed matter of embodiment, the cross section of the conventional scratch printed matter, and the black light irradiated to them FIG. 3 is a flowchart showing an example of a method for producing the scratch printed material according to the embodiment. Schematic diagram showing a scratch print of the second embodiment FIG. 5 is a flowchart illustrating an example of a method for producing a scratch printed matter according to the second embodiment. Schematic diagram showing a scratch print of the third embodiment FIG. 5 is a flowchart illustrating an example of a method for producing a scratch printed material according to the third embodiment.

Embodiments of the present invention will be described below. In addition, this invention should not be limited to these embodiments at all, and can be implemented in various modes without departing from the gist thereof.
<Embodiment>
<Overview>

The present embodiment is characterized in that the ink for printing the latent image further contains a fluorescent agent. That is, by causing the ink for printing a latent image to emit light by irradiation with black light, contrast between light and darkness with a printing substrate such as surrounding paper that emits light with a fluorescent agent is suppressed, and the latent image is less likely to float. Further, unlike the prior art, it is not necessary to arrange a base layer that is solidly printed with white ink in order to shield the light emitted by the black light irradiation, so the printing process and the amount of ink used can be relatively reduced. Benefits arise.
<Configuration>

  The scratch printed matter of the present embodiment is a scratch printed matter in which a latent image is revealed by rubbing a print area including the latent image with a coin or a coin having a height similar to that of a coin, and includes a fluorescent agent. A scratch printed matter comprising a base material and a latent image printed with an ink containing a material harder than the coin or the like and a fluorescent agent on the surface of the printing base material.

  FIG. 1 is a conceptual diagram showing an example of how the scratch printed material of this embodiment is used. As shown in the figure, it is urged to rub the ellipse area on the paper of the “lottery ticket” with coins, and in the ellipse area is printed so that the “winning” character that is the result of the lottery cannot be seen. (A). Then, as a result of rubbing the elliptical area with coins, the “winning” character that is the result of the lottery can be visually recognized (b). Here, an image such as “hit” printed so that it cannot be seen until it is rubbed with a coin is called a latent image, and an area on which the latent image is printed and an area expected to be rubbed with a coin or the like. This is called a print area.

  FIG. 2 is a conceptual diagram showing a cross section of the scratch printed material of the present embodiment. As shown in the drawing, the latent image is printed on the surface of “paper” (0201) containing a fluorescent material serving as a printing substrate and a substance having a hardness higher than that of coins by “ink” (0202) containing a fluorescent agent of the same color as paper. It is printed. When the print area including the latent image printed with this ink is rubbed with “coins” (0203), the metal powder generated by scraping the coins with a harder ink than the coins or the dirt attached to the surface of the coins Adheres to the ink surface. Since this “attachment” (0204) does not exhibit approximately white color, the latent image becomes apparent due to the attachment in the white print region.

  Hereinafter, each configuration of the present embodiment will be described. The “printing substrate” contains a fluorescent agent. The printing substrate only needs to be able to display some kind of image by placing ink on its surface. In addition to paper, synthetic resin, metal, wood, bamboo, etc. are molded thinly and flatly on the surface. The thing processed like ink is applicable. For example, when paper is used as the printing medium, it is preferable to apply ink on coated paper whose surface is coated with a paint to improve smoothness. Many commonly used blank papers contain a fluorescent agent called a fluorescent whitening agent in order to improve white color development.

  The “fluorescent agent” is a fluorescent material that absorbs ultraviolet light having a wavelength of 300 to 400 nm and emits blue light having a wavelength of 400 to 450 nm. Examples of such substances include bis (triazinylamino) stilbene disulfonic acid derivatives, bisstyryl biphenyl derivatives, and fluorescein.

  The “latent image” is printed on the surface of the printing substrate with an ink containing a material having a higher hardness than the coin or the like and a fluorescent agent. First, it is the color of this ink, but it is assumed that the latent image printed under sunlight or normal illumination is difficult to see, so it may exhibit the same color as the color of the printing substrate. is necessary. For example, when white paper is used as a printing substrate, the ink for printing a latent image on the printing substrate must be white. The same applies to the case where the printing substrate exhibits a color other than white.

  The “coin etc.” is a concept including a thing that can be used as a substitute for a coin in order to rub scratch printing in addition to a coin. Possible substitutes include, for example, keys, scissors blades, metal tools and metal fittings, connection terminals of electronic devices, and the like. For coins, iron, brass, copper, aluminum, zinc, lead and the like are used as materials. Moreover, the material of the thing which can become a substitute of a coin is not greatly different from the material used for a coin.

  The ink for printing the latent image includes a material having higher hardness than a coin or the like. Although the altitude of coins varies depending on the material, iron has a Mohs hardness of 4.5, which is the highest among the materials mentioned above. Therefore, a material having a Mohs hardness of 5 or more may be contained in the ink only for coins. Moreover, the thing which can substitute for a coin may contain steel whose hardness is higher than a coin as a material. Therefore, as materials having higher hardness than coins or the like, for example, titanium oxide (hardness 7), tungsten carbide (hardness 8), alumina (hardness 9), silicon carbide (hardness 9), etc. may be contained in the ink.

  The content of the fluorescent agent contained in the ink for printing the latent image is preferably determined as appropriate so that the fluorescence luminance of the ink and the fluorescence luminance of the printing substrate containing the fluorescent agent are approximately the same. This is because the lower the difference between the two luminances, the more the latent image can be suppressed from being exposed by black light irradiation. For example, when a coated paper with reduced gloss used for high-grade catalogs is used as a printing substrate, it is preferable that 0.1 to 10 percent by weight of the fluorescent agent is contained in the ink.

  In addition, depending on the color of the printing substrate and the type of fluorescent agent contained, there may be a difference in the hue of the emitted light. Therefore, it is preferable to appropriately select the fluorescent agent contained in the ink so that the hue of light emitted by the fluorescent agent contained in the ink for printing the latent image is close to the hue of light emitted from the printing substrate. Some fluorescent agents exhibit colors of the three primary colors of RGB (red, green, and blue). Therefore, the hue may be adjusted by appropriately adding these fluorescent agents. In addition, in order to adjust the fluorescence brightness and the hue, it can be performed while measuring the fluorescence brightness and the hue using a fluorescence spectrophotometer. Note that varnish ink for gloss adjustment may be included in the ink for printing the latent image in accordance with the degree of gloss of the printing substrate.

  Differences between the scratch printed material of the present embodiment having the above-described configuration and the conventional scratch printed material disclosed in Patent Document 2 will be described with reference to FIG. FIG. 3 is a conceptual diagram showing a cross section of the scratch print of the present embodiment, a cross section of a conventional scratch print, and a black light irradiated to them.

  FIG. 3A is a conceptual diagram showing a cross section of the scratch printed material of the present embodiment. As shown in the figure, in the scratch printed matter of this embodiment, a latent image is printed on a “printing base material” (0301) by “ink containing a fluorescent agent” (0303, 0304) that is harder than a coin or the like. ing. When this scratch print is irradiated with “black light” (0302), both the printing substrate and the ink that prints the latent image contain a fluorescent agent, and therefore absorbs the ultraviolet rays irradiated by the black light and has a wavelength of 400 Emits blue light of -450 nm. This blue light is indicated by an arrow in the figure. Since both the ink and the printing substrate emit light, a contrast of light and dark due to the presence or absence of light emission does not occur, and a latent image does not appear.

  FIG. 3B is a conceptual diagram showing a cross section of a conventional scratch print. As shown in the figure, in the conventional scratch printed matter, a “printing substrate” (0311) is solidly printed with “ink” (0313) having a hardness higher than that of coins or the like to provide a base layer. Then, the latent image is printed with a negative pattern on the base layer by “matt varnish” (0314, 0315, 0316) or the like. When this “black light” (0312) is irradiated on the scratch print, the printed substrate that has absorbed ultraviolet rays emits light, but is blocked by a solid printed underlayer as shown in the figure, so that light does not leak onto the surface of the scratch print. Therefore, contrast between light and dark due to the presence or absence of light emission does not occur, and the latent image does not appear.

  As described above, the scratch printed matter of the present embodiment and the scratch printed matter of the prior art are common in that the latent image is prevented from being revealed by not causing contrast between light and dark, but a configuration for obtaining the effect Is different. Further, due to the difference in the configuration, the scratch printed matter of the present embodiment can obtain advantageous effects of suppressing the amount of ink used and reducing the number of processes with respect to the conventional scratch printed matter.

FIG. 4 is a flowchart showing an example of a method for producing a scratch printed material according to the present embodiment. As shown in the drawing, first, a printing substrate containing a fluorescent agent is prepared (printing substrate preparation step: S0401). Then, a latent image is printed on the surface of the printing substrate prepared in the printing substrate preparation step with an ink containing a material harder than the coin and the like and a fluorescent agent (latent image printing step: S0402). The configuration in each step is as described above. Moreover, in order to perform each said step, a well-known printing technique can be used.
<Effect>

According to the present embodiment, it is possible to provide a scratch printed matter in which a latent image does not become apparent even when irradiated with black light without increasing the amount of use of the printing process and ink.
<Embodiment 2>
<Overview>

The present embodiment is a scratch print that is based on the first embodiment and makes the outline of the latent image blurred and difficult to visually recognize by printing the negative pattern of the latent image with varnish. The latent image is made difficult to visually recognize by printing with the same color ink as the printing substrate. However, under sunlight or strong illumination, the boundary between the ink and the printing substrate may become clear and the latent image may be visually recognized. The scratch printed matter of the present embodiment prevents such a situation by the above-described configuration.
<Configuration>

  FIG. 5 is a conceptual diagram showing a scratch print of the present embodiment. FIG. 5A is a conceptual diagram viewed from the front, and FIG. 5B is a conceptual diagram illustrating a part of the print region of FIG.

  As shown in FIG. 5 (a), the characters “win” are printed as “latent images” (0502) in the “print area” (0501). Then, a “negative pattern area” (0503) in which the “win” character is removed is printed with varnish. A negative pattern printed with this varnish is called a varnish negative pattern. For convenience of explanation, the latent image is indicated by oblique lines and the negative pattern area is indicated by vertical lines in the drawing.

  As shown in FIG. 5B, the print area in the scratch printed material of the present embodiment is such that “latent image” (0512) is printed with ink on the “printing substrate” (0511), and the latent image is bordered. A “varnish negative pattern” (0513) is printed.

  Examples of the varnish for printing the varnish negative pattern include an overprint varnish generally used for protecting a printing surface by gravure printing or offset printing. A general overprint varnish is transparent, but may contain a pigment having the same color as the printing substrate. Further, when there is a gap between the gloss level of the printing substrate and the gloss level of the ink that prints the latent image, it is preferable to select a varnish that reduces the gap and print the negative pattern. For example, when the gloss of the printing substrate is stronger than the gloss of the ink for printing the latent image, it is preferable to print the negative pattern with a mat-type varnish to suppress the gloss. Thereby, the possibility that the latent image is visually recognized due to the difference in the gloss level can be reduced.

  By printing the negative pattern of the latent image with varnish in this way, the outline of the latent image becomes blurred as compared with a configuration in which the latent image is simply printed on the printing substrate. Therefore, the latent image is less likely to be visually recognized even under sunlight or strong illumination.

FIG. 6 is a flowchart showing an example of a method for producing a scratch printed material according to the present embodiment. As shown in the drawing, first, a printing substrate containing a fluorescent agent is prepared (printing substrate preparation step: S0601). Then, a latent image is printed on the surface of the printing substrate prepared in the printing substrate preparation step with an ink containing a material harder than the coin and the like and a fluorescent agent (latent image printing step: S0602). Then, the negative pattern area of the latent image in the print area is printed with varnish (varnish printing step: S0603). The varnish printing step may be performed before the latent image printing step, and the latent image printing step may be performed thereafter. The configuration in each step is as described above. Moreover, in order to perform each said step, a well-known printing technique can be used.
<Effect>

According to the present embodiment, it is possible to provide a scratch printed matter in which a latent image is hardly visible.
<Embodiment 3>
<Overview>

The present embodiment is a scratch printed matter obtained by printing a pattern with colored ink having a hardness lower than that of a coin or the like on a print region including a latent image, based on the first or second embodiment. By applying such a pattern, the latent image becomes less visible.
<Configuration>

  FIG. 7 is a conceptual diagram showing a scratch print of the present embodiment. FIG. 5A is a conceptual diagram viewed from the front, and FIG. 7B is a conceptual diagram illustrating a part of the print region of FIG.

  As shown in FIG. 7A, “winning” characters are printed as “latent images” (0702) in the “printing area” (0701). A “halftone dot” (0703) is printed from above the latent image with colored ink. In the figure, the outline of the character of “hits” is drawn in order to indicate the presence of the latent image, but the latent image is not actually printed in such a manner that such a contour appears. By printing the pattern from above the latent image in this way, the latent image is more difficult to be visually recognized.

  The “colored ink” in the present embodiment is an ink that can exhibit some color so that a pattern such as a halftone dot printed by the ink can be visually recognized. It can be said that the ink has. For example, when a pattern is printed with white ink when the color of the printing substrate or the latent image is white, it is almost impossible to visually recognize the pattern. Not included in colored ink. On the other hand, when the printing substrate or the latent image is blue, even if the ink on which the pattern is printed is white, the white ink corresponds to a colored ink.

  In addition, the “pattern” in the present embodiment is not printed so as to cover the latent image over the entire surface, but printed so as to partially cover the surface of the ink constituting the latent image, such as a halftone dot or a grid. Says what is done. This pattern is printed with an ink having a lower hardness than a coin or the like, and is printed so as not to be peeled off from the print area even when rubbed with a coin or the like. As shown in FIG. 7B, the “latent image” (0712) is printed on the “printing substrate” (0711) with ink, and the “halftone dot” (0713) is further printed on the latent image. . As shown in the drawing, the ink for printing the pattern is scattered in the print area including the latent image. When such a scratch printed material is rubbed with a coin or the like, the ink for printing the pattern has a lower hardness than the coin or the like, so that the dirt such as the coin is not attached or the coin or the like is not scraped off by contact with the ink. . Therefore, no discoloration or coloring occurs in the printed pattern.

  On the other hand, since the ink for printing the pattern is scattered, contact between the ink for printing the latent image and a coin or the like occurs. Since the ink on which the latent image is printed contains a substance having a hardness higher than that of a coin or the like, “soil such as a coin or a metal such as a scraped coin” (0714) adheres to the ink that has come into contact with the coin or the like. The latent image becomes obvious.

  It should be noted that the inclusion of the fluorescent agent in the ink for printing this pattern does not affect the fact that the latent image does not appear even under black light irradiation. In the case where the ink for printing the pattern contains a fluorescent agent, the pattern emits light in the same manner as the print area where the ink for printing the pattern is not applied, so that the latent image does not appear. In addition, when the ink for printing the pattern does not contain a fluorescent agent, the portion on which the ink for printing the pattern is placed blocks light emission from the printing substrate or the ink for printing the latent image, This pattern appears in light and dark shades, making the latent image more difficult to see.

FIG. 8 is a flowchart showing a method for producing the scratch print of the present embodiment. As shown in the drawing, first, a printing substrate containing a fluorescent agent is prepared (printing substrate preparation step: S0801). Then, a latent image is printed on the surface of the printing substrate prepared in the printing substrate preparation step with an ink containing a material harder than the coin and the like and a fluorescent agent (latent image printing step: S0802). Then, the negative pattern area of the latent image in the print area is printed with varnish (varnish printing step: S0803). Then, a pattern is printed on the print area including the latent image printed in the latent image printing step with colored ink having a hardness lower than that of coins (pattern printing step: S0804). The varnish printing step may be performed before the latent image printing step, and the latent image printing step may be performed thereafter. Further, the varnish printing step may be omitted. And the structure in each said step is as having mentioned above. Moreover, in order to perform each said step, a well-known printing technique can be used.
<Effect>

  According to the present embodiment, it is possible to provide a scratch printed matter in which the latent image is less visible.

0201 Printing substrate 0202 Ink 0203 Coin 0204 Deposit

Claims (8)

A scratch printed matter in which a latent image is revealed by rubbing a print area including the latent image with a coin or a coin that is a substance having a hardness similar to that of a coin,
A printing substrate containing a fluorescent agent;
A latent image printed on the surface of the printing substrate with an ink containing a material having a higher hardness than the coin or the like and a fluorescent agent;
Scratch print consisting of.   The scratch printed matter according to claim 1, wherein the fluorescent agent contained in the ink is contained at a content rate similar to that of the fluorescent agent contained in the printing substrate.   The scratch printed matter according to claim 1, which has a varnish negative pattern obtained by printing a negative pattern region of a latent image in a print region with a varnish.   The scratch printed matter according to any one of claims 1 to 3, wherein a pattern is printed on a print region including a latent image with colored ink having a hardness lower than that of the coin or the like. A method for producing a scratch printed matter in which a latent image is revealed by rubbing a printed region including the latent image with a coin or a coin having a hardness comparable to that of a coin,
A printing substrate preparation step of preparing a printing substrate containing a fluorescent agent;
A latent image printing step of printing a latent image on the surface of the printing substrate prepared in the printing substrate preparation step with an ink containing a material harder than the coin or the like and a fluorescent agent;
A method for producing a scratch printed material.   The method for producing a scratch printed matter according to claim 5, further comprising a varnish printing step of printing a negative pattern area of the latent image in the printing area with a varnish.   The scratch according to claim 5 or 6, further comprising a pattern printing step of printing a pattern with colored ink having a hardness lower than that of the coin or the like on a printing region including the latent image printed in the latent image printing step. Manufacturing method of printed matter.   The method for producing a scratch printed material according to any one of claims 5 to 7, wherein the fluorescent agent contained in the ink is contained at a content rate similar to that of the fluorescent agent contained in the printing substrate.

Images