JP6250131B1 - Printed matter, printing method, and printed matter manufacturing method - Google Patents

Abstract

Provided is a printed matter capable of suppressing information leakage due to copying. A substrate (1), a gloss layer (2) formed on a part of the surface (1a) of the substrate (1), and a gloss layer (2) of the surface (1a) of the substrate (1) The first printed layer (31) printed and printed with a density difference (Δd) that allows the first print information (C1) to be visually discernable with respect to the ground, with the portion where the) is not formed as the ground, and gloss A second printed layer (2) printed and formed on the surface (2a) or adjacent part of the layer (2) so that the second printed information (C2) can be visually discriminated under the specularly reflected light of the glossy layer (2). 32). The first print layer (31) has a color close to the background color, and the second print layer (32) has a black color or a color close to black. [Selection] Figure 1

Description

  The present invention relates to a printed material, a printing method, and a printed material manufacturing method, and more particularly to a printed material, a printing method, and a printed material manufacturing method in which at least a part of printed information is difficult to visually distinguish in a copied material.

There is known a printed material in which a glossy surface of a metal layer is formed on a substrate and information (characters, figures, images, etc.) is printed on the glossy surface (for example, Patent Document 1).
When this printed matter is copied by a copying machine, the glossy surface is copied black in the obtained matter (copy matter), so that it is easily determined that it is a copy.
Further, if the confidential information is printed in black, the ground glossy surface in the copied material becomes black, so that the density difference between the ground and the printed portion becomes small, making it difficult to visually distinguish the confidential information. Therefore, there is an effect of suppressing forgery and leakage of confidential information.

JP-A-6-155975

  Conventional printed matter with a glossy surface (hereinafter referred to as a glossy print surface) with black printed information has a very low copy density because the amount of light incident on the light receiving element from the glossy surface when copying with a copier is standard. Alternatively, in the dark setting, the background portion of the glossy printed surface and the black printed portion are copied with almost no difference in density. This makes it difficult to visually distinguish information.

However, when copying with a low copy density, the copy density becomes lighter and darker on the glossy printed surface than on the black printed part. It becomes larger than the case.
For this reason, all the information printed black on the glossy surface can be visually discriminated, and there is a risk that information leakage will be easy.

As described above, when all the confidential information printed on the printed material can be visually discriminated by the copied material, information leakage due to the copying becomes easy.
Further, it is assumed that the confidential document is composed of a large number of pages of a conventional printed matter having a glossy printed surface on which confidential information is printed. Even in this case, if it can be confirmed that the confidential information can be determined by setting the copy density low in the trial copying, the automatic feeding function of the copying machine can visually distinguish all the confidential information for each page at the same time. A copy of this is easily obtained. That is, there is a concern that the entire confidential information can be easily leaked.
For this reason, there has been a demand for a device that can suppress leakage of information printed on printed matter due to copying.

  Therefore, the problem to be solved by the present invention is to provide a printed material, a printing method, and a printed material manufacturing method capable of suppressing information leakage due to copying.

In order to solve the above problems, the present invention has the following configuration and procedure.
1) a base material;
A gloss layer formed on a part of the surface of the substrate;
With the portion where the glossy layer is not formed on the surface of the base material as a ground, the first printed layer printed and formed with a density difference that allows the first print information to be visually discerned with respect to the ground;
A second printed layer printed and formed on the surface or adjacent portion of the glossy layer so that the second print information can be visually discriminated under the specularly reflected light of the glossy layer;
With
The first printed layer is a color close to the color of the ground,
The second print layer is a printed matter having a black color or a color close to black.
2) The first print layer is capable of visually identifying the first print information with a negative, or the second print layer is capable of visually identifying the second print information with a negative. The printed matter described in 1).
3) The first print information includes a part of one confidential information, and the second print information includes a remaining part obtained by removing the part from the one confidential information, or a part of the remaining part. It is a printed matter as described in 1) or 2).
4) The glossy layer is a printed matter according to any one of 1) to 3), wherein the glossy layer is formed of an aluminum foil.
5) The printed material according to any one of 1) to 4), wherein in the copied material, at least one of the first print information and the second print information cannot be visually discriminated.
6) A printing method for printing print information on a substrate,
A print information division acquisition step for separately acquiring the first print information and the second print information from the print information;
Using the surface of the base material as a ground, a printing process for a base material with respect to the ground that performs density difference printing that enables the first print information to be visually recognized, and
A glossy layer printing step for performing printing so that the second printed information can be visually discriminated under the specularly reflected light of the glossy layer, on the surface of the glossy layer formed on the base material or an adjacent portion thereof, and
The printing color in the substrate printing step is a color close to the color of the ground,
In the printing method, the printing color in the glossy layer printing step is black or a color close to black.
7) The printing method according to 6), wherein at least one of the first print information and the second print information can be visually discriminated with a negative.
8) The print information division acquisition step includes a confidential information determination step of determining whether the print information includes confidential information,
The printing method according to 6) or 7), wherein when it is determined that the confidential information is included, the first print information and the second print information are separately acquired from the confidential information.
9) The color of the ground, the printing color in the substrate printing step, the printing color in the glossy layer printing step, and the density difference are expressed in the copy by the first print information and the second The printing method according to any one of 6) to 8), wherein at least one of the print information is set to be indistinguishable visually.
10) A method for producing a printed material for producing a printed material having printing information printed on a substrate,
A print information division acquisition step for separately acquiring the first print information and the second print information from the print information;
A gloss layer forming step of forming a gloss layer on a part of the surface of the substrate;
Using the surface of the base material as a ground, a printing process for a base material with respect to the ground that performs density difference printing that enables the first print information to be visually recognized, and
The anti-glossy layer printing step for performing printing that makes it possible to visually recognize the second print information under the specularly reflected light of the glossy layer, on the surface of the glossy layer or the adjacent portion;
Including
The printing color in the substrate printing step is a color close to the color of the ground,
It is a manufacturing method of the printed matter which makes the printing color in the said glossy layer printing step black or a color close to black.
11) The method for producing a printed material according to 10), wherein at least one of the first print information and the second print information can be visually discriminated with a negative.
12) The print information division acquisition step includes a confidential information determination step of determining whether the print information includes confidential information,
The method for producing a printed material according to 10) or 11), wherein when it is determined that the confidential information is included, the first print information and the second print information are separately acquired from the confidential information. It is.
13) The first print information and the second print information in the copy are obtained by using the background, the print color in the substrate printing step, the print color in the glossy layer printing step, and the density difference. The method for producing a printed material according to any one of 10) to 12), wherein at least one of the settings is set such that the visual recognition is impossible.

  According to the present invention, an effect that information leakage due to copying can be suppressed is obtained.

FIG. 1 is a plan view for explaining a printed matter P that is an example of a printed matter according to an embodiment of the present invention. FIG. 2 is a partial perspective view for explaining how the print area AP2 of the printed matter P is seen. FIG. 3 is a cross-sectional view at the position S3-S3 in FIG. FIG. 4 is a graph for explaining the densities of the print area AP1 and the print area AP2 in the printed matter P. FIG. 5 is a plan view for explaining a copy Fa of the printed matter P. FIG. FIG. 6 is a plan view for explaining the copy Fb of the printed matter P. FIG. FIG. 7 is a plan view for explaining a copy Fc of the printed matter P. FIG. FIG. 8 is a flowchart for explaining the processing method of the print information J printed on the printed matter P. FIG. 9 is a diagram for explaining a print area AR2 in a printed material Pn which is a modified example of the printed material P. FIG. 10 is a graph for explaining the densities of the print area AP1 and the print area AP2 in the printed matter Pn. FIG. 11 is a plan view for explaining the printing area AR2 in the copies Fn1 and Fn2 of the printed matter P. FIG. FIG. 12 is a plan view for explaining the print area AR1 in the printed material Pn2 which is a modified example of the printed material P. FIG. FIG. 13 is a graph for explaining the density of the print area AR1 in the printed material Pn2. FIG. 14 is a cross-sectional view for explaining a printed matter Ps that is a modified example of the printed matter P.

A printed matter according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3 by a printed matter P which is a preferred example.
FIG. 1 is a plan view of the printed matter P, FIG. 2 is a partial perspective view for explaining a printing area AR2 included in the printed matter P, and FIG. 3 is a cross-sectional view at a position S3-S3 in FIG. .

  In the following description, a person who copies (performs) the printed matter P and a person who uses the copied matter are collectively referred to as a user for convenience.

(Example)
In the printed material P, at least two printing areas AR1 and AR2 having different ground densities are set on the surface of the base material 1, and the ground of one printing area AR2 has gloss, and the printing area AR1. In addition, the printing layer 31 and the printing layer 32 are formed by printing ink in each of the printing areas AR2.

The printing area AR1 is an area where the surface 1a of the substrate 1 is the ground of the printing layer 31, and the two-dot chain line shown in FIG. 1 is set as a virtual line.
The print area AR2 is an area where the glossy reflective layer 2 is formed as a ground, and is distinguished from other areas by the presence or absence of the glossy reflective layer 2.

The base material 1 is, for example, A4 size high quality paper. The material of the substrate 1 is not limited to paper as long as the surface 1a is white or a color whose density is close to white. For example, a resin sheet may be used.
Here, the density is the density on the gray scale based on the luminance value, where white is 0% and black is 100%, and the same applies to the following description.

The glossy reflection layer 2 is formed, for example, by applying a paste to a predetermined range (printing area AR2) and then transferring a metal foil to a portion where the paste is applied.
The kind of metal foil is not limited, for example, aluminum foil.

  The glossy reflective layer 2 is formed so that the surface thereof is a glossy surface that substantially reflects regularly without irregularly reflecting incident light. Hereinafter, for easy understanding, the surface of the glossy reflective layer 2 is referred to as a glossy surface 2a. Moreover, in FIG. 1, the glossy surface 2a is shown by cross hatching.

  The printing layer 31 is printed so that predetermined printing information (partial confidential information C1 to be described later) can be visually recognized as an ink layer having a density close to the gray scale with respect to the color of the surface 1a of the base material 1 serving as the ground. It is formed by. For example, UV ink is used as the ink.

When the surface 1a is white, for example, the color of the printing layer 31 is a color close to white (for example, light green or light yellow) with a density on a gray scale as much as possible within a visually distinguishable range.
In FIG. 1, in order to show that the color is close to white, the print layer 31 is shown as a collection of dotted lines.

  The print layer 32 is formed by printing as an ink layer of a dark color (dark ash, dark blue, etc.) close to black at a density on black or gray scale. For example, UV ink is used as the ink.

Information to be printed on the printed matter P is assumed to be print information J. The print information J is characters, graphics, images, combinations thereof, and the like.
In the following description, it is assumed that the print information J includes confidential information C.

The print layer 31 and the print layer 32 are formed so that the confidential information C included in the print information J can be visually recognized.
Specifically, the print content of the print layer 31 is set based on the partial confidential information C1 that is a part of the confidential information C, and the print content of the print layer 32 is the rest of the confidential information C excluding the partial confidential information C1 or its It is set based on the partial confidential information C2 which is the remaining part.

  A specific example is shown in FIG. That is, the confidential information C is the English word “FLOWER”, the partial confidential information C1 is a partial character string “FLO”, and the partial confidential information C2 is the remaining character string “WER”. .

In the printed matter P, the printed layer 31 is formed in a positive manner with a density difference that is visually distinguishable with respect to the ground surface 1a as described above, although the density is low (thin).
Therefore, the user can grasp the partial confidential information C1 from the printed matter P.

On the other hand, the glossy surface 2a of the glossy reflective layer 2 can be used when the irradiation angle of the light irradiated on the printed matter P from the light source does not match the viewing angle at which the user views the printed matter P at a position facing the light source. The amount of reflected light toward is extremely small. That is, the user is recognized as black or dark gray.
Therefore, the density difference between the glossy surface 2a and the print layer 32 formed on the glossy surface 2a is small, and the user may not be able to distinguish and grasp the partial confidential information C2.

On the other hand, under regular reflection light in which the posture of the printed matter P and the viewing angle of the user are changed to match the light irradiation angle and the viewing angle, the portion that becomes the ground of the glossy surface 2a is reflected toward the user. As the amount of light increases, it is visually recognized as a glossy portion (bright portion) as shown in FIG.
Therefore, the user can discriminate and grasp the confidential information C2 at the viewing position where the density difference between the glossy surface 2a and the print layer 32 becomes large.

  That is, since the user can discriminate and grasp both the partial confidential information C1 and the partial confidential information C2 from one printed matter P, all of the confidential information C can be obtained.

  Next, the case where the above-mentioned printed matter P is copied in two gradations using a black and white copying machine will be described with reference to FIGS. In the following description, in black and white copying, copies obtained by changing the set density to three levels are referred to as copies Fa to Fc, respectively. The copies Fa to Fc are also collectively referred to as a copy F.

  For easy understanding, first, the density on the gray scale of the printed material P will be described with reference to the density graph of FIG. FIG. 4 shows a density obtained by converting the density of each portion of the printed matter P based on the reflected light in the direction orthogonal to the paper surface recognized by the copying machine into a gray scale. In the density on the gray scale shown in FIG. 4, as described above, white is 0% and black is 100%.

  That is, in the printed matter P, the surface 1a that is the ground of the print area AR1 is white with a density of 0%, the color of the print layer 31 is recognized with a density d1 that is close to white (light green, etc.) The color 32 is black having a density of 100%, and the glossy surface 2a is dark ash or a dark color (dark blue, etc.) recognized at a density d2 close to black.

For example, the density d1 is generally set to a smaller value in a density range (5% to 100%) that can be visually discriminated by contrast with white. For example, it is about 5% of the minimum value.
When the ground surface 1a is a color that is not white, a color close to the ground color is set to a color having a density in a range of ± 5% of the ground color density.
The density d2 is a standard density setting for black and white copying in a copying machine, and is generally set to approximately 75% or more, which is a range determined to be the same color as black. For example, it is about 80%. The color having a density of 75% or more is a color close to black.

  Next, a copy F obtained by making a black and white copy of the print P by a copying machine will be described with reference to FIGS.

  First, a copied material Fa obtained by copying the printed material P with two gradations of black and white using the density setting of the copying machine as a standard will be described with reference to FIGS.

In copying with the standard density set, the printed layer 31 in the printed matter P is light in color and has a small density difference from white on the surface 1a, which is the background, so that it is recognized as white and is not copied to the duplicated Fa.
Therefore, even if the user looks at the copy Fa, the character string “FLO” corresponding to the partial confidential information C1 cannot be visually recognized in the copy print area AR1f corresponding to the print area AR1 of the copy Fa.

On the other hand, the glossy reflection layer 2 in the printed material P has a minimal amount of reflected light reaching the light receiving element in the copying machine, and is therefore copied to the copy Fa as the substantially black glossy reflection layer corresponding copy portion 2f.
Further, the printed layer 32 corresponding to the partial confidential information C2 formed on the glossy surface 2a of the printed material P is used as the black printed layer corresponding copy portion 32f as it is on the copy Fa, and the glossy reflective layer compatible copy portion 2f is grounded. (In FIG. 5, only the reference numeral is shown for the printing layer corresponding copying unit 32f for convenience).

As a result, in the copy Fa, the density difference between the glossy reflection layer corresponding copy portion 2f and the print layer corresponding copy portion 32f becomes so small that visual recognition cannot be made.
That is, even if the user looks at the copy Fa, the character string “WEP” that is the partial confidential information C2 cannot be visually recognized.

Thus, it is difficult to visually recognize both the partial confidential information C1 and the partial confidential information C2 in the copy Fa obtained by copying at the reference density setting.
Therefore, the user cannot grasp all of the confidential information C from the copy Fa.

  Next, the case where the copy density Fb is obtained with the copy density set higher (higher) than the standard density will be described with reference to FIGS.

In this case, the density of the set density is different between the portion of the surface 1a of the white background in the print area AR1 of the printed matter P and the portion of the print layer 31 that is printed with a color having a density d1 close to white. The printing layer 31 having a slightly higher density than the ground is set to be darker.
Therefore, in the copy Fb, the ground is copied as a substantially white copy print area AR1f, and the portion of the print layer 31 having a darker density than the ground is copied as a dark print layer corresponding copy portion 31f.

As a result, in the copy Fb, a density difference larger than that of the print P occurs between the ground surface Fb1 and the print layer corresponding copy unit 31f corresponding to the partial confidential information C1, and the print layer corresponding copy unit 31f. May be visually distinguishable.
That is, the user may be able to distinguish and grasp the partial confidential information C1 in the copy Fb.

On the other hand, in the print area AR2 of the printed matter P, the density of the glossy surface 2a of the glossy reflective layer 2 is set higher.
Therefore, the print layer 32 is copied as it is as the black print layer corresponding copy portion 32f in the copy Fb, and the glossy reflection layer 2 is copied as the darker gloss reflection layer corresponding copy portion 2f.

Thereby, in the copy Fb, the density difference between the glossy reflection layer corresponding copy part 2f and the print layer corresponding copy part 32f becomes smaller, so that the visual discrimination of the print layer corresponding copy part 32f in the gloss reflection layer corresponding copy part 2f is It becomes difficult (see FIG. 6).
That is, the user cannot discriminate and grasp the partial confidential information C2 from the copy Fb.

As described above, in the copy Fb obtained by copying with a high (high) copy density, partial confidential information C1 may be grasped, but partial confidential information C2 cannot be grasped.
Therefore, the user cannot grasp all the confidential information C from the copy Fb.

  Next, the case where the copy Fc is obtained with the copy density set to be lower (lower) than the standard density will be described with reference to FIGS.

In this case, the black print layer 32 formed in the print area AR2 of the printed matter P is copied to the copy Fc as a copy portion 32f corresponding to the dark gray print layer having a slightly lighter density than black.
Further, the glossy reflection layer 2 in the printed material P is set to a lighter density and is copied to the copy Fc as the glossy reflection layer corresponding copy portion 2f (with cross-hatching).

Since the density of the glossy reflection layer 2 is larger than that of the print layer 32, the density of the glossy reflection layer corresponding copy portion 2f is lower in the copy Fc, and the density of the gloss reflection layer corresponding copy portion 2f is lower. In some cases, the density difference from 32f becomes large, and visual discrimination of the print layer corresponding copy unit 32f in the glossy reflection layer compatible copy unit 2f may be possible. That is, the user grasps the partial confidential information C2 in the copy Fc. There are cases where it is possible.

On the other hand, for the print area AR1, the density of the print layer 31 of the printed matter P is set to be lighter, so that in the copying machine, the color is the same as the background color (substantially white when the background color is white). Recognized and not copied to copy Fc.
Therefore, even if the user looks at the copy Fc, the character string “FLO” that is the partial confidential information C1 cannot be visually recognized.

As described above, in the copy Fc obtained by copying with the copy density set low (low), the partial confidential information C2 may be grasped, but the partial confidential information C1 cannot be grasped.
Therefore, the user cannot grasp all of the confidential information C from the copy Fc.

  As described above in detail, when the confidential information C printed on the printed material P is, for example, the character string “FLOWER” shown in FIG. Only one of “FLO” and “WER”, which are part of C, is obtained, and all of the confidential information C cannot be grasped.

Of course, if the copy is made at both high density and low density, the copy Fb and the copy Fc are obtained and the contents are put together, the “FLOWER” that is the entire confidential information C can be grasped.
However, it takes time and effort to copy, and the user cannot grasp all of the confidential information C with one copy F.

As described above, even if the printed material P is copied at a different copy density, the printed material P only obtains the copied material F from which at least a part of the confidential information C is missing. It is impossible to grasp everything.
As a result, the utility value of the copy F is extremely low, and the meaning and motive for copying the print P for the purpose of obtaining the confidential information C is substantially lost.
Therefore, the printed matter P can effectively suppress leakage of confidential information C due to copying.

  Next, an example of a process for manufacturing the printed material P will be described. First, a print information processing procedure that is a processing procedure of the print information J will be described with reference to a flowchart of FIG.

The processing of the print information J is executed by an operator or an information processing apparatus such as a computer programmed in advance in the layout process for determining the print layout of the printed matter P or in the previous process.
In the following description, the processing procedure by the worker who performs the layout will be described. However, if the worker is replaced with an information processing apparatus, an automatic print information processing procedure can be described.

The operator acquires the print information J (Step 1).
The print information J is information provided from the requester of the printed material P, and is, for example, a character, a graphic, an image, or a combination thereof.

The operator determines whether or not the confidential information C is included in the print information J (Step 2).
This determination is performed based on information related to the confidential information C from the creation requester. In the case of automatic processing, it is preferable that a mark such as a flag is attached to data corresponding to the confidential information C in the data of the print information J so that the determination is possible.

If it is determined in step 2 that the print information J does not include the confidential information C (No), this procedure ends to shift to the normal printing procedure.
When it is determined that the print information J includes the confidential information C (Yes), the worker acquires the confidential information C by dividing the partial confidential information C1 and the partial confidential information C2 (Step 3).
That is, the partial confidential information C1 and the partial confidential information C2 are acquired as information included in the confidential information C without overlapping.
Therefore, the confidential information C may be composed of only the partial confidential information C1 and the partial confidential information C2, or may be composed of other confidential information.

For example, the division may be performed as follows.
That is, the information amounts are close to each other so that the confidential information amount (number of characters and image area) is not extremely biased after the division into two.

Alternatively, it is better to extract highly confidential information Cm with higher confidentiality from the confidential information C so that the information amount of the highly confidential information Cm is not extremely biased (preferably substantially the same).
This is because, if the highly confidential information Cm is biased to one side, the copy F may leak confidential information when either the partial confidential information C1 or the partial confidential information C2 can be discriminated by copying at a different copy density. This is to prevent it from having a value in terms of viewpoint.

After executing (Step 3), the partial confidential information C1 is associated with the print layer 31 and the partial confidential information C2 is associated with the print layer 32 (Step 4). In this association, the print colors of the print layers 31 and 32 are set to have the densities d1 and d2, respectively, in consideration of the density on the gray scale.
As described above, the color of the print layer 31 is a light ash or a light color having a density d1 (see FIG. 4) close to white, and the color of the print layer 32 is a black or a density d2 close to black (see FIG. 4). Dark ash or dark color.

  In other words, the color of the print layer 31 and the color of the print layer 32, and the density difference Δd between the print layer 31 and the ground surface 1a are represented in the copy F by the partial confidential information C1 and the partial confidential information C2. It is determined from an experiment and set so that at least one of them cannot be discriminated visually.

  Here, the density difference Δd is the difference between the color density d1 (%) of the printing layer 31 and the color density of the surface 1a. In the example shown in FIG. 4, the surface 1a is white (density 0%). Therefore, Δd = d1.

After performing the printing information processing of (Step 1) to (Step 4), the printed material P is formed by cold foil printing described below.
This printing can be performed using an in-line printer that continuously performs foil transfer, printing, and protective layer formation (varnishing).
Since cold foil printing itself is a well-known technique, an outline will be described.

  First, the high quality paper is unwound from a roll of high quality paper to be the base material 1, and paste is applied to a range to be a print area AR <b> 2 of the printed matter P.

Next, the glossy reflective layer 2 is formed by transferring the aluminum foil to the portion of the fine paper coated with the paste.
That is, the glossy reflective layer 2 that is the print area AR2 is formed at a predetermined interval in the strip extending direction on the unwound quality paper.

Next, color offset printing with UV ink is performed on the portion of the belt-shaped high-quality paper to be the printing area AR1 and the formed glossy reflective layer 2.
Specifically, four process colors, black, cyan, magenta, and yellow UV ink, are superimposed and printed in this order.

For the printing area AR1, printing is performed on the surface of the high-quality paper serving as the base material 1 so that the partial confidential information C1 set in the printing information processing procedure of FIG.
For the print area AR2, printing is performed on the glossy surface 2a of the glossy reflective layer 2 so that the partial confidential information C2 processed in the print information processing procedure of FIG.

  A protective layer is formed as necessary. Specifically, UV curable varnishing is performed so as to cover the printing layers 31 and 32.

  UV ink is fixed by irradiating the printing areas AR1 and AR2 with ultraviolet rays. When varnishing is performed, the varnish is also cured.

  Next, the strip-shaped high quality paper is cut at a predetermined interval to obtain a printed matter P.

Up to this point, an example has been described in which the copy F of the printed product P is obtained by copying with black and white two gradations.
In general, the copying machine can change the gradation setting of copying and perform copying with multiple gradations (for example, with 256 gradations) exceeding two gradations, including pseudo gradations. .

When multi-tone copying is performed on the printed matter P, the degree of density between the printed layer 31 and the ground surface 1a and the degree of density between the printed layer 32 and the ground glossy surface 2a are usually: A copy Fg reproduced more delicately than the copy F obtained by black and white copying is obtained.
Therefore, the copy Fg may be easier to grasp the confidential information C than the copy F.

For this, the print layer 31 may be formed with thinner and thinner lines, and the print layer 32 may be formed with thinner lines.
This makes it possible to grasp the confidential information C from the printed matter P, while making it difficult to grasp the confidential information C from the copied matter Fg, so that leakage of the confidential information C due to copying can be suppressed.

  The embodiment is not limited to the above-described configuration and procedure, and may be modified in a range not departing from the gist of the present invention.

In addition to the print area AR1 and the print area AR2, the print area AR3 is set on the printed matter P as shown in FIG. 1, and general information G that is not confidential is printed (in this example, the character string “photo book”). May be.
The print area AR3 may be wholly or partially present in the print area AR1 or the print area AR2.
Further, a part of the confidential information C may be printed in the print area AR3, or the non-confidential general information G may be printed in the print area AR1 or the print area AR2.

The print layer 32 to be printed and formed in the print area AR2 is not limited to the positive printing shown in FIG. 1, and may be the negative printing shown in FIG. 9A.
That is, instead of forming the print layer 32 by positive printing of the character string “WER”, the printing layer 32 may be formed by negative printing (extracted characters) of “WER”. Hereinafter, a printed material in which the printing layer 32 is formed by negative printing is referred to as a printed material Pn.

Negative printing is performed on the glossy surface 2a in black or a dark color close to black.
For example, as shown in FIG. 9A, when the print layer 32 is formed by black negative printing on the glossy print layer 2, the portion corresponding to the partial confidential information C2 (character string “WER”) is The glossy portion 32m where the glossy surface 2a of the ground is exposed, and the printed layer 32 is visually recognized as a solid black.

In this case, a density graph recognized by the copying machine corresponding to FIG. 4 in the printing area AR2 is shown in FIG.
In FIG. 10, the print layer 32 has a solid black density of 100%, and the glossy portion 32m corresponding to the partial confidential information C2 has a density d4 close to 100%.

  Similar to the density d2, the density d4 is generally set to 75% or more, which is a range determined to be black in the standard density setting for black and white copying in a copying machine. For example, it is about 80%.

When negative printing is performed on the glossy surface 2a, the appearance of the glossy portion 32m to be removed differs greatly depending on the viewing angle, as in the case of the positive printing described in the embodiment.
That is, when the light irradiation angle from the light source with respect to the printed matter Pn and the viewing angle of the user do not match, the amount of reflected light toward the user is very small, so the glossy portion 32m corresponding to the partial confidential information C2 is Is recognized as black or dark gray.
Therefore, the density difference between the glossy portion 32m and the black solid print layer 32 is small, and the user may not be able to determine and grasp the partial confidential information C2.

On the other hand, under the specular reflection light in which the posture of the printed matter Pn and the position viewed by the user are changed to match the light irradiation angle and the viewing angle, the glossy portion 32m is as shown in FIG. The amount of reflected light toward the user increases and is visually recognized as a glossy part (bright part).
Accordingly, the density difference between the glossy portion 32m and the print layer 32 is large, and the user can visually recognize the glossy portion 32m and grasp the partial confidential information C2.

When such a printed matter Pn is copied by a copying machine to obtain a copied matter Fn1, the glossy portion 32m is copied darkly with the copy density set to be higher than the standard.
Specifically, as shown in FIG. 11A, in the copy Fn1, there are a glossy portion corresponding copy portion 32mf corresponding to the glossy portion 32m and a copy portion corresponding to the black solid print layer 32. The density difference with the printing layer corresponding copying unit 32f becomes smaller, and visual discrimination of the glossy portion corresponding copying unit 32mf becomes difficult.
That is, the user cannot grasp the partial confidential information C2 from the copy Fn1.

On the other hand, when the copy density Fn2 is obtained by setting the copy density to be lower (lower) than the standard density, as shown in FIG. 11B, the black solid print layer 32 of the print Pn has a density slightly higher than black. Is copied as a copy portion 32f corresponding to a thin dark ash print layer (cross hatching is given in FIG. 11B).
Further, the glossy portion 32m in the printed material Pn is set to a lighter density and is copied to the copy Fn2 as the glossy portion corresponding copy portion 32mf (in FIG. 11B, halftone dots are given for distinction).

As a result, in the copy Fn2, the density of the glossy portion corresponding copy portion 32mf becomes lower and the density difference from the print layer corresponding copy portion 32f increases, and the gloss of the blank printed layer corresponding copy portion 32f is the background. In some cases, it is possible to visually identify the partial correspondence copying unit 32mf. That is, the user may be able to grasp the partial confidential information C2 in the copy Fn2.

In this way, the printed material Pn formed by inverting the printing layer 32 with respect to the printed material P has a behavior with respect to the copy density in the copying of the printing area AR2, but the density density is reversed, and the printed material Pn Will be the same.
Therefore, the printed matter Pn, like the printed matter P, has an effect of suppressing information leakage.

In the printed matter P and the printed matter Pn described above, the glossy reflective layer 2 is formed as a whole surface in the print area AR2, and the positive or negative print layer 32 is overprinted on the surface (the glossy surface 2a). .
As a modification to these, as shown in FIG. 14, the glossy reflective layer 2 is not a solid surface but a printed glossy reflective layer 2 s in which the printed pattern 32 is removed, and an adjacent portion of the glossy reflective layer 2 s. It is good also as the printed matter Ps which formed the printing layer 32s in the missing part which is.
FIG. 14 is a cross-sectional view of the printed matter Ps, and can be compared with FIG.

In the printed matter Ps, the print layer 32s is not formed so as to overlap the glossy reflective layer 2, but is formed on the material 1 adjacent to the glossy reflective layer 2s.
In the case of the printed layer 32 formed on the glossy reflective layer 2 like the printed materials P and Pn, the color of the visually recognized print layer 32 is affected by the glossy reflective layer 2 whose three attributes are the ground. Visible.
Therefore, there is a limit to reducing the density difference with the glossy reflective layer 2 around the print layer 32 when the print layer 32 is viewed from the direction orthogonal to the printed matter P and Pn.

On the other hand, the printed matter Ps is not affected by the glossy reflective layer 2 in appearance because the printed layer 32 s is formed on the base material 1.
Therefore, it is possible to adjust the color of the printing layer 32s so as to substantially eliminate the density difference from the glossy reflection layer 2 around the printing layer 32 when the printing layer 32s is viewed from the direction orthogonal to the printed matter Pn. is there.
Therefore, even when the copy density Fs of the printed material Ps is copied with the copy density set to be low (low), the printed layer 32s is more difficult to visually recognize and it is more difficult to grasp the partial confidential information C2.

  In the print area AR1 of the printed matter Ps, a positive print layer 31 as shown in FIG. 1 may be formed, or a negative print layer 33 as shown in FIG. 12 may be formed. Further, the print layer 31 and the print layer 33 may be mixedly formed in the print area AR1.

In the embodiment, the density of the print layer 31 corresponding to the partial confidential information C1 in the print area AR1 has been described as being higher (darker) than the ground, but the reverse may be possible.
That is, for the printed matter P and the printed matter Pn, as shown in FIG. 12, the solid print layer 33 without the partial confidential information C1 is formed in the print area AR1, and the density is close to the background color (for example, white). It is good also as the printed matter Pn2 formed with the color. In this case, the formation range of the print layer 33 corresponds to the print area AR1.

In the printed material Pn2, the partial confidential information C1 is indicated by a ground color portion 33n where the surface 1a of the base material 1 is exposed (extracted character string “FLO”).
If the color of the surface 1a of the substrate 1 is, for example, white, the density on the gray scale of the printing layer 33 and the ground color portion 33n is as shown in FIG. 13 and the ground color portion 33n corresponding to the partial confidential information C1. Is 0% (white), and the print layer 33 is set to a density d5 slightly higher (darker) than white.

  Similar to the density d1, the density d5 is set, for example, as a smaller value in a density range (5% to 100%) that can be visually discriminated against white. For example, it is about 5% of the minimum value.

  As a result, when the copy density setting is standard and higher than that, the difference in density between the copy portion corresponding to the print layer 33 and the copy portion corresponding to the ground color portion 33n becomes large in the copy, and the ground color portion 33n. It is possible to discriminate the copy portion corresponding to.

On the other hand, when the copy density setting is low, the print layer 33 is light in color and further set in density, so that it is recognized as substantially white by the copying machine and is not copied.
Therefore, the user cannot grasp the partial confidential information C1 from the copy.

As described above, the printed matter Pn2 obtained by negatively printing the print layer 33 in the print area AR1 to form the blank background portion 33n corresponding to the partial confidential information C1 is printed on the printed matter P and the printed matter Pn. The behavior with respect to the copy density is the same as that of the printed materials P and Pn, except that the density density is reversed.
Therefore, the printed matter Pn2 can obtain the effect of suppressing information leakage, like the printed matter P and the printed matter Pn.

The printed matter P, Pn, Pn2 is not limited to one having one print area AR1 and one print area AR2, and may have a plurality of at least one area.
The colors of the first print information C1 printed in the print area AR1 need not all be the same. Moreover, when it has several printing area | region AR1, a color may differ for every area | region and may be the same.
When there are a plurality of print areas AR2, the outline shape and area of each print area AR2 may be different or the same.

  In general, gray scale conversion of a color image in a copying machine is performed based on a luminance value. For this reason, when the colors of the print layers 31 and 33 formed in the print area AR1 are the same brightness, if the color is yellow or green that is grayscale converted closer to white than red or blue, the color can be visually recognized on the printed matter P. This is desirable because it is difficult to copy the copy F.

  In the printing area AR1, the positive printing layer 31 and the negative printing layer 33 may be mixed. In the printing area AR3, the printing layer 32 may include a mixture of negative and positive.

The print layer 31, the print layer 32, the print layer 33, and the glossy reflection layer 2 are not limited to those formed by solid printing.
Instead of solid printing, printing with dots such as halftone dots, a repetitive pattern of a predetermined shape, or a random pattern may be used. In addition, a solid printing range and a printing range with blanking may be mixed.
When performing printing with punching, the higher the printing density (closer to solid), the better the grasp of the printing information J (confidential information C) when directly viewing the printed matter P, Pn, Pn2, Ps. This is preferable.

In an Example, the glossy reflection layer 2 is not limited to what is formed using metal foil. The formation method of the metal part PM is not limited as long as it can form a glossy layer.
For example, metal ink containing metal powder can be used for offset printing, flexographic printing,
The glossy reflective layer 2 can also be formed by printing by a printing method such as gravure printing, silk screen printing, or ink jet printing.
In addition, the gloss reflection layer 2 having a desired shape can be formed by pattern formation of metal ink by electrodeposition, pattern formation by laser ablation after solid application of metal ink, or pattern formation by etching using a resist mask. It may be formed.

DESCRIPTION OF SYMBOLS 1 Base material, 1a Surface 2 Glossy reflection layer, 2a Glossy surface, 2f Glossy reflection layer corresponding copy part 31, 32, 33 Print layer 31f, 32f Print layer corresponding copy part, 32f Print layer corresponding copy part 32m Glossy part, 32mf Glossy Partially compatible copy part 33n Ground color part AR1, AR2, AR3 Print area, AR1f Copy print area C Confidential information, Cm Highly confidential information, C1, C2 Partially confidential information d1, d2, d4, d5 Density Fa to Fc, F, Fn1 , Fn2, Fs Copy, Fb1 Surface G General information, J Print information P, Pn, Pn2, Ps Print

Claims (13)

A substrate;
A gloss layer formed on a part of the surface of the substrate;
With the portion where the glossy layer is not formed on the surface of the base material as a ground, the first printed layer printed and formed with a density difference that allows the first print information to be visually discerned with respect to the ground;
A second printed layer printed and formed on the surface or adjacent portion of the glossy layer so that the second print information can be visually discriminated under the specularly reflected light of the glossy layer;
With
The first printed layer is a color close to the color of the ground,
The second printed layer is a printed matter having black or a color close to black.   The first print layer allows the first print information to be visually discriminated with a negative, or the second print layer allows the second print information to be visually discerned with a negative. Item 1. A printed matter according to item 1.   The first print information includes a part of one confidential information, and the second print information includes a remaining part obtained by removing the part from the one confidential information, or a part of the remaining part. The printed matter according to claim 1 or claim 2, characterized by the above.   The printed matter according to claim 1, wherein the glossy layer is formed of an aluminum foil.   5. The printed material according to claim 1, wherein in the copied material, at least one of the first print information and the second print information is visually indistinguishable. A printing method for printing print information on a substrate,
A print information division acquisition step for separately acquiring the first print information and the second print information from the print information;
Using the surface of the base material as a ground, a printing process for a base material with respect to the ground that performs density difference printing that enables the first print information to be visually recognized, and
A glossy layer printing step for performing printing so that the second printed information can be visually discriminated under the specularly reflected light of the glossy layer, on the surface of the glossy layer formed on the base material or an adjacent portion thereof, and
The printing color in the substrate printing step is a color close to the color of the ground,
A printing method characterized in that a printing color in the anti-gloss layer printing step is black or a color close to black.   The printing method according to claim 6, wherein at least one of the first print information and the second print information can be visually discriminated with a negative. The print information division acquisition step includes a confidential information determination step of determining whether the print information includes confidential information,
8. The printing method according to claim 6, wherein when it is determined that the confidential information is included, the first print information and the second print information are separately acquired from the confidential information.   The first print information and the second print information are displayed on the copy of the background color, the print color in the substrate printing step, the print color in the glossy layer printing step, and the density difference. The printing method according to any one of claims 6 to 8, wherein at least one of the settings is set so that visual recognition is impossible. A printed material manufacturing method for manufacturing a printed material on which printing information is printed on a substrate,
A print information division acquisition step for separately acquiring the first print information and the second print information from the print information;
A gloss layer forming step of forming a gloss layer on a part of the surface of the substrate;
Using the surface of the base material as a ground, a printing process for a base material with respect to the ground that performs density difference printing that enables the first print information to be visually recognized, and
The anti-glossy layer printing step for performing printing that makes it possible to visually recognize the second print information under the specularly reflected light of the glossy layer, on the surface of the glossy layer or the adjacent portion;
Including
The printing color in the substrate printing step is a color close to the color of the ground,
A method for producing a printed material in which the printing color in the glossy layer printing step is black or a color close to black.   The method for producing a printed matter according to claim 10, wherein at least one of the first print information and the second print information can be visually discriminated with a negative. The print information division acquisition step includes a confidential information determination step of determining whether the print information includes confidential information,
12. The printed matter manufacturing method according to claim 10, wherein the first print information and the second print information are separately acquired from the confidential information when it is determined that the confidential information is included. Method.   The ground, the printing color in the substrate printing step, the printing color in the glossy layer printing step, and the density difference are expressed as at least one of the first printing information and the second printing information in a copy. The method for producing a printed matter according to any one of claims 10 to 12, wherein one of the settings is set so that the visual recognition is impossible.