JP3165651U - Photo scratch print - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photo-scratch printed matter capable of producing a photographic-like shade image printed on a printed matter by rubbing with a metal body in a scratch printed matter capable of coloring a secret image to appear. On a coat layer solidly printed with white ink containing titanium oxide, halftone dots are printed with white ink containing titanium oxide in order to form a basic gradation (11) of a shade image (3). Halftone dot printing with white ink containing titanium oxide on the first halftone dot printing section in order to form a gradation (12) darker than the basic gradation of the shaded image (3) with the first halftone dot printing section. The second halftone dot printing portion is included, and at least a varnish layer solidly printed with varnish on the coat layer in order to form the lightest gradation (13) of the shade image (3). [Selection diagram] Fig. 2

Description

  The present invention relates to a photo-scratch printed matter capable of displaying a photograph-like grayscale image printed on a printing medium by rubbing with a metal body.

  Scratch printed matter is a printed matter that appears so that characters and symbols such as “hits” and “losing” that cannot be seen (hereinafter referred to as “secret images”) can be seen by rubbing a specific part with a metal coin or the like. It is.

  For example, in Patent Document 1, a secret image is printed on a surface of a printing medium such as a paper medium, and a paste-like silver ink that does not transmit light including metal particles such as aluminum is thickly coated thereon to form a secret image. Scratch prints that are not visible are disclosed. When the silver ink is scraped off with a metal coin or the like, a secret image appears. Similarly, Patent Document 2 discloses a scratch printed material obtained by heating and pressurizing and transferring a metal foil made of aluminum that does not transmit light on a secret image in place of paste-like silver ink. Even in such a case, the confidential image appears by rubbing and scraping the metal foil with a metal coin or the like. The metal foil is more difficult to peel off than the paste-like metal ink, and can prevent a secret image from appearing due to unintended friction.

  By the way, the scratch printed matter which gives the topcoat layer which can be scraped off on a secret image like patent document 1 and 2 does not look at a secret image more effectively by suppressing the light transmittance of a topcoat layer. It can be done. Therefore, it is often used for applications requiring high confidentiality such as “lotteries” for giving prizes and cash vouchers. On the other hand, problems in terms of hygiene and aesthetics due to shavings generated when the topcoat layer is scraped are pointed out.

  Therefore, a scratch printed matter in which a secret image is printed on the surface of a printing medium such as a paper medium with white ink containing particles made of a material having a hardness higher than that of a general metal, for example, inorganic material particles such as titanium oxide, has also been proposed. ing. In such a scratch printed matter, a secret image printed with white ink cannot be visually observed on a printing medium such as a white paper medium, but when the secret image portion is rubbed with a metal coin or the like, the metal coin is scraped with inorganic material particles. Since metal powder is generated and adsorbed and colored by the white ink, the secret image appears so that it can be seen. Such a scratch printed matter that can be colored to reveal a secret image can solve the above-mentioned sanitary and aesthetic problems without causing shavings.

  Similarly, as a scratch printed matter that can be displayed by coloring a secret image, for example, in Patent Document 3, solid printing is performed on a surface of a printing medium such as a paper medium with white ink containing titanium oxide particles, and the printed matter is printed thereon. There has been disclosed a scratch printed matter provided with an overprint varnish (OP varnish) so as to embody a secret image. That is, the secret image is given as a negative pattern by OP varnish. Further, in Patent Document 4, solid printing is performed on a surface of a printing medium such as a paper medium with white ink containing titanium oxide particles, and an overprint varnish (OP varnish) is provided thereon so as to form a secret image. Furthermore, there is disclosed a scratch printed matter in which a white layer on which a white ink containing titanium oxide particles is applied is provided on a secret image.

Japanese Patent Laid-Open No. 11-157265 JP 2002-187389 A JP 2004-34384 A Japanese Patent No. 4577909

  In the scratch printed matter disclosed in Patent Documents 1 and 2, a secret image such as a photographic image or a color image composed of a grayscale image appears by scraping the topcoat layer unless the secret image is transmitted through the topcoat layer. Can be. On the other hand, in the scratch printed matter disclosed in Patent Documents 3 and 4, not only a color image but also a photographic image composed of a grayscale image cannot be displayed as a secret image.

  Accordingly, an object of the present invention is to provide a photo-scratch capable of displaying a photographic gray-scale image printed on a printing material by rubbing with a metal material in a scratch-printed material that can be displayed by coloring a secret image. To provide printed matter.

  The photo-scratch print according to the present invention is a photo-scratch print that can produce a photographic gray-scale image printed on a printing medium by rubbing with a metal body, and is solid-printed with white ink containing titanium oxide. A coating layer; a first halftone dot printing portion that is halftone-printed with white ink containing titanium oxide on the coating layer to form a basic gradation of the grayscale image; and a basic gradation of the grayscale image. A second halftone dot printing portion that is halftone-printed with a white ink containing titanium oxide on the first halftone dot printing portion to form a dark grayscale; And at least a varnish layer printed by varnish on the coat layer.

  According to this device, even if a halftone dot printing portion with white ink having a high titanium oxide content is provided by the coat layer, choking (surface floating) can be prevented, and friction caused by a metal body compared to conventional scratch printed matter. The white ink can be colored more black. That is, by printing a secret image with halftone dots using such white ink, a grayscale image can be clearly displayed with the density of halftone dots. That is, in a scratch print that can be displayed by coloring a secret image, a photo-scratch print that can appear a photographic gray-scale image printed on a printing medium can be obtained by rubbing with a metal body.

  In the above-described device, the coat layer may include a plurality of layers of a first coat layer and a second coat layer containing more oil than the first coat layer. According to such a device, even when a halftone dot printing portion with a white ink having a high titanium oxide content is provided by the coat layer, it is possible to further prevent piling and mottling. That is, in a scratch print that can be displayed by coloring a secret image, a photo-scratch print that can appear a photographic gray-scale image printed on a printing medium can be obtained by rubbing with a metal body.

  In the above-described device, the varnish layer may be composed of a plurality of layers. According to this device, coloring of the portion provided with the varnish layer can be suppressed, and a grayscale image can be displayed more clearly. That is, in a scratch print that can be displayed by coloring a secret image, a photo-scratch print that can appear a photographic gray-scale image printed on a printing medium can be obtained by rubbing with a metal body.

  In the above-described device, the first halftone dot printing unit and the second halftone dot printing unit may include the same amount of titanium oxide. Further, the first halftone dot printing unit and the second halftone dot printing unit may include different amounts of titanium oxide. According to such a device, it is possible to provide an expression variation when a photographic gray image is displayed.

  In the above-described device, the grayscale image may be provided only on at least a part of the printing medium. The printed material may be a map printed material. According to such a device, it is possible to provide a photo scratch printed matter with an increased degree of design freedom.

It is a figure which shows the external appearance before appearance of the confidential image of the photo scratch printed matter by this invention. It is a figure which shows the external appearance after appearance of the confidential image of the photo scratch printed matter by this invention. It is sectional drawing which shows the principal part of the photo scratch printed matter by this invention. It is process drawing which shows the manufacturing method of the photo scratch printed matter by this invention. It is a figure which shows the manufacturing apparatus of the photo scratch printed matter by this invention.

  The details of the photo scratch printed material according to one embodiment of the present invention will be described with reference to FIGS.

As shown in FIGS. 1 and 2, the scratch printed material 1 displays a grayscale image (secret image) 3 such as a dog photograph by rubbing the photo scratch portion 10 with a metal body such as a coin. It is a printed matter made of a paper medium to be obtained. Here, the printing paper 2 is preferably a paper medium with a basis weight of about 180 to 300 g / m ² and may contain a luminescent agent (fluorescent whitening agent) to make the surface appear white. A visible color, black-and-white characters, a photograph, or the like can be given to the portion 10 ′ other than the photo scratch portion 10 by printing.

  Referring also to FIG. 3, the photo scratch unit 10 includes a first coat layer 4 and a second coat layer 5 provided by solid printing on the surface of the printing paper 2 and a first white portion 6 provided by halftone printing. And a second overlay white portion 7, a first varnish layer 8 and a second varnish layer 9 provided by solid printing.

  The first coat layer 4 is provided so as to cover the entire surface of the photo scratch portion 10 by solid printing using white ink containing titanium oxide particles that are white pigments. The second coat layer 5 is provided so as to cover the surface of the first coat layer 4 by solid printing using a white ink containing more oil than the white ink provided with the first coat layer 4. Here, the solid printing on the printing paper 2 with the white ink containing the titanium oxide particles as the white pigment is given by two layers of the first coat layer 4 and the second coat layer 5 made of the white ink by changing the oil content. Therefore, it is possible to prevent mottling and piling of solid printing. That is, even if the amount of titanium oxide particles in the white ink of the second coat layer 5 is increased, good printing is possible.

  The first overlay white portion 6 is provided on the second coat layer 5 and is halftone with white ink containing titanium oxide particles in the portion of the basic gradation pattern 11 corresponding to the photograph-like grayscale image 3 as a secret image. Given in print. Specifically, it is given by halftone dot printing in which the size (density) of halftone dots is changed in accordance with the gradation of the grayscale image 3. Further, the second overlay white portion 7 is halftone printed with a white ink containing titanium oxide particles on the strong tone pattern 12 having a stronger tone than the basic tone pattern 11 on the first overlay white portion 6. Given in. As a result, the photograph-like grayscale image 3 formed by the first overlay white portion 6 can be expressed in more detail by the strong gradation pattern 12.

  Here, even if the content of the titanium oxide particles in the white ink is increased more than before, the first white overlay portion 6 and the second white overlay portion 7 are choked by the first coat layer 4 and the second coat layer 5 (surface Can be prevented. In other words, the content of the titanium oxide particles in the white ink can be increased and printing of the first overlay white portion 6 and the second overlay white portion 7 can be performed. Thereby, more metal powder generated when being rubbed with a metal body such as a coin can be adsorbed in the first and second white portions 6 and 7, and the white ink can be colored more blackly. By making the halftone dots darker, the black and white gradation width in halftone printing can be expressed more broadly, giving not only monotonous images with almost no shading but also photographic-like gray images 3. To get.

  It should be noted that the first white overlay portion 6 and the second white overlay portion 7 are provided by white ink containing substantially the same amount of titanium oxide particles, but the amount of titanium oxide particles in the white ink of the second overlay white portion 7 is the same. May be increased or conversely. As a result, it is possible to give an expression variation when the photographic gray image 3 appears.

  The first varnish layer 8 is given by solid printing so as to fill the extraction pattern 13 which is the lightest gradation portion of the photographic gray image 3 so as to emulate the basic gradation pattern 11. If the blank pattern 13 is given in white, the first varnish layer 8 may be, for example, a mat varnish in which a white agent made of a small amount of calcium sulfate (calcined gypsum) is added to the mat medium and mixed. The second varnish layer 9 is applied from above to protect the first varnish layer 8. Thereby, when it is rubbed with a metal body such as a coin, the punching pattern 13 is not colored, and the photographic gray image 3 can clearly appear.

  According to the above-described embodiment, the first white layer 6 and the second white layer 7 formed by halftone dot printing with white ink having a high content of titanium oxide particles by the first coat layer 4 and the second coat layer 5 are provided. Even if given, the choking can be prevented. That is, the color of the white ink by the metal body can be made blacker than that of the conventional scratch print. That is, a grayscale image can be clearly displayed with the density of halftone dots, and a photo scratch printed matter can be obtained. In addition, the thickness can be reduced and the handling is easy as compared with a scratch printed material in which a concealed image cannot be viewed by providing a conventional overcoat layer.

  Here, the scratch print 1 may be a map, and the grayscale image 3 that is a part of the map may be a photograph showing a building or location information on the map. Such a gray image 3 appears by rubbing with a metal body such as a coin.

  Next, a method for producing a photo-scratch print according to one embodiment of the present invention will be described with reference to FIGS. 1 to 3 and 5 as appropriate along FIG.

  As shown in FIG. 5, the two cylinders of the third cylinder 23 and the fourth cylinder 24 of the printing press 20 having four rotary cylinders of the first cylinder 21, the second cylinder 22, the third cylinder 23, and the fourth cylinder 24. The first coat layer 4 and the second coat layer 5 are respectively superimposed on the surface of the printing paper 2 and printed solid (solid printing step: S1). In order to prevent the first cylinder 21 and the second cylinder 22 from being contaminated by the white ink, the third cylinder 23 and the fourth cylinder 24 positioned downstream of the printing paper 2 are used. When the second cylinder 22 is used, the third cylinder 23 and the fourth cylinder 24 must be cleaned more carefully in subsequent steps.

  Specifically, the ink tank (not shown) of the third cylinder 23 is filled with white ink added with titanium oxide particles, and the first coat layer 4 is solid-printed. Although depending on the state of the surface coat of the printing paper 2, typically, white ink containing about 30 vol% (hereinafter referred to as “%”) of titanium oxide particles is suitable. Here, when the amount of the titanium oxide particles is too large, piling occurs and unevenness is likely to occur. Therefore, a plurality of white inks prepared by adding different amounts of titanium oxide and kneaded are prepared, and these are mixed little by little into the ink tank to prepare a final white ink.

  In the ink tank (not shown) of the fourth cylinder 24, the white ink filled in the ink tank of the third cylinder 23 is given a large amount of oil of about 10% to improve fluidity and transferability. A white ink that can suppress the occurrence of the choking of 4 is filled, and the second coat layer 5 is solid-printed on the first coat layer 4. Even in this case, similarly to the white ink of the third cylinder 23, it is preferable to put a plurality of white inks having different amounts of titanium oxide into the ink tank while mixing them.

  The printing paper on which the first coat layer 4 and the second coat layer 5 are solid-printed is typically dried for about 8 hours (drying step: S2). By sufficiently performing such drying, it is possible to reliably prevent choking of the first white portion 6 and the second white portion 7 printed in the subsequent stage. In addition, the first varnish layer 8 and the second varnish layer 9 can also be better bitten.

  Subsequent to the drying step S2, the first cylinder 21, the second cylinder 22, the third cylinder 23, and the fourth cylinder 24 of the printing machine 20 are cleaned, and the first cylinder 21 is used to provide a secret image. The first overlay white portion 6 is halftone printed as the basic gradation pattern 11 using the halftone screen corresponding to the shade of the photograph-like shade image 3 (first overlay white printing step: S3). As in the solid printing step S1, a plurality of white inks prepared by adding different amounts of titanium oxide between 0 to 50% and kneading are prepared, and these are mixed little by little into the ink tank to obtain the final white ink. To prepare.

  Further, the second cylinder of the printing press 20 is used as a second strong white pattern 12 using a halftone dot screen corresponding to a particularly dark portion of the light and dark image 3 as a secret image. The part 7 is halftone printed (second white printing step: S4). Similar to the solid printing step S1 and the first white printing step S3, a plurality of white inks prepared by adding different amounts of titanium oxide in different amounts between 0 to 50% are prepared, and the inks are mixed little by little. Place in tank and prepare final white ink.

  Also, the first varnish layer 8 is solid-printed as the extraction pattern 13 that is the lightest gradation portion so as to emulate the basic gradation pattern 11 using the third cylinder 23 (first varnish printing step: S5). ). The varnish is used by adding OP varnish to the mat varnish to which mat medium and calcined gypsum are added so as to adjust the gloss and color of the photo scratch printing unit 10 by visual observation. Typically, an appropriate amount of OP varnish is added to adjust the gloss and color of the mat varnish formed by mixing at a ratio of 67% mat medium and 33% calcined gypsum.

  Further, the second varnish layer 9 is further solid-printed on the first varnish layer 8 using the fourth cylinder 24 (second varnish printing step: S6). Again, the varnish is adjusted so as to adjust the gloss and color of the photo scratch printing unit 10 by visual observation. Typically, an appropriate amount of OP varnish is further added to the varnish of the first varnish printing step S5. Adjusted.

  According to the manufacturing method described above, the photo-scratch printed matter 1 that clearly displays the grayscale image 3 with a halftone dot density can be easily obtained.

  Up to this point, the representative embodiments of the present invention and the modifications based thereon have been described. However, the present invention is not necessarily limited thereto. Those skilled in the art will be able to find various alternative embodiments and modifications without departing from the scope of the appended utility model registration claims.

DESCRIPTION OF SYMBOLS 1 Photo scratch printed matter 2 Printing paper 3 Gradation image 4 1st coat layer 5 2nd coat layer 6 1st place white part 7 2nd place white part 8 1st varnish layer 9 2nd varnish layer 10 Photo scratch part 11 Basic gradation Pattern 12 Strong gradation pattern 13 Blank pattern

Claims (7)

A photo-scratch print that can reveal a photographic gray image printed on a substrate by rubbing with a metal body,
A coat layer that is solid-printed with white ink containing titanium oxide;
A first halftone dot printing portion that is halftone-printed with a white ink containing titanium oxide on the coating layer to form a basic gradation of the grayscale image;
A second halftone dot printing unit that is halftone-printed with white ink containing titanium oxide on the first halftone dot printing unit in order to form a tone that is darker than the basic tone of the grayscale image;
A photo-scratch print comprising: at least a varnish layer printed with a varnish on the coating layer in order to form the lightest gradation of the grayscale image.   The photo-scratch printed matter according to claim 1, wherein the coat layer is composed of a multilayer of a first coat layer and a second coat layer containing more oil than the first coat layer.   The photo scratch printed matter according to claim 1, wherein the varnish layer is composed of a plurality of layers.   4. The photo-scratch printed matter according to claim 1, wherein the first halftone dot printing unit and the second halftone dot printing unit contain the same amount of titanium oxide. 5.   4. The photo-scratch print according to claim 1, wherein the first halftone dot printing unit and the second halftone dot printing unit include different amounts of titanium oxide. 5.   6. The photo scratch printed matter according to claim 1, wherein the grayscale image is given to at least a part of the substrate. The photo scratch printed material according to claim 6, wherein the printing material is a map printed material.