JP6194748B2 - Printed matter - Google Patents

Description

The present invention relates to a printed matter including invisible information using a copy check technique, and more particularly to a printed matter formed by using the copy check technique to identify information identifying the person.

  In recent years, the resolution of color copiers has improved, and if a genuine printed material is copied with a high-resolution copying machine, it is impossible to distinguish between the genuine printed material and the copied printed material, making it possible to perform sophisticated copying. Concern has been raised.

  Therefore, when copying is performed by providing a copy check area having a first halftone dot pattern (background halftone dot pattern) and a second halftone dot pattern (check halftone dot pattern), the second halftone dot is displayed on the copy printed matter. A technique for deterring fraud by making point patterns appear has been released.

  For example, publicly known documents relating to a technique for forming a camouflage pattern in order to prevent the difference between halftone dot patterns in a copy check area composed of a first halftone dot pattern and a second halftone dot pattern from being visible are disclosed. (See Patent Document 1).

  Furthermore, a proposal has been made regarding a technology that includes a first halftone dot pattern and a second halftone dot pattern, and forms a copy check area in which the total area of halftone dots included in a unit area is substantially equal. There is also a technique in which the second halftone dot pattern is displayed according to the resolution performance of the copying machine (see, for example, Patent Document 2).

JP-A-53-142237 Japanese Patent No. 3609511

  However, the second halftone dot pattern is fixed information, and only the same second halftone dot pattern is provided on a large amount of printed matter, and there is nothing more than simply suppressing fraud. Therefore, the second halftone dot pattern is changed to variable information for each printed matter, and further provided as variable information in two copy check areas having different properties in the same printed matter, so that the printed matter including invisible information requiring security is provided. For the purpose of provision.

  The present invention has solved the above problems by the following inventions. In addition, the code | symbol in the parenthesis attached | subjected to each following invention respond | corresponds with the code | symbol attached | subjected to drawing.

A first invention according to the present invention is a printed matter in which variable information is printed by a printer in each of the first information area (10), the second information area (20), and the third information area (30). The second information area (20) is formed of a first halftone dot pattern (40) and a second halftone dot pattern (50), and the third information area (30) is a third halftone dot. The first halftone dot pattern (40) and the third halftone dot pattern (60) are formed from the pattern (60) and the fourth halftone dot pattern (70), and the second halftone dot pattern (50). Compared with the fourth halftone dot pattern (70), the halftone dot area per unit area is equal and the density of halftone dots is high, and the second information area (20) and the third halftone dot pattern are visually observed. Discriminating the halftone dot pattern formed in the information area (30) A printed material was difficult, at the second information area (20), higher than the resolution of the copying apparatus the resolution of the first screen pattern (40), the second halftone dot pattern (50) The resolution is set lower than the resolution of the copying apparatus, and in the third information area (30), the resolution of the third halftone dot pattern (60) is higher than the resolution of the scanner apparatus having a higher resolution than the copying apparatus. The printed matter is characterized in that the resolution of the fourth halftone dot pattern (70) is set higher than the resolution of the copying apparatus and lower than the resolution of the scanner apparatus .

  In the printed material of the present invention, it is possible to set copy check areas having different properties for each printed material by making the second halftone dot pattern and the fourth halftone dot pattern variable information. As a result, a printed matter to which two pieces of information having different security levels are added as invisible information can be obtained.

It is an example of the top view of the printed matter concerning this embodiment.

  Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an example of a plan view of a printed material according to the present embodiment.
In FIG. 1, 10 is a first information area, 20 is a second information area, 30 is a third information area, 40 is a first halftone dot pattern, 50 is a second halftone dot pattern, and 60 is a third information area. The halftone dot pattern 70 is a fourth halftone dot pattern.
In the second information area 20, a latent image made invisible by the first halftone dot pattern 40 and the second halftone dot pattern 50 is displayed as a visible image by a normal copying machine (for example, resolution 600 dpi). Is set to

  That is, the first halftone dot pattern 40 and the second halftone dot pattern 50 are set so that the sum of the halftone dot areas included per unit area in each pattern is substantially equal. The size of each halftone dot included in the first halftone dot pattern 40 is set to a size that is not resolved by the copying machine (for example, 800 dpi or more) and is included in the second halftone dot pattern 50. The size of each halftone dot is set to a size (for example, 400 dpi or less) that can be resolved by the copying machine.

As described above, in the second information area 20, only a halftone dot in one halftone dot pattern is resolved by a normal copying machine, and as a result, the latent image is displayed as a visible image.
If a scanner having a higher resolution than that of a normal copier (for example, resolution of 900 dpi) is used, the halftone dots included in the first halftone dot pattern 40 are also resolved. In this case, the first halftone dot pattern is resolved. Since both the dot pattern 40 and the second halftone dot pattern 50 are resolved, the latent image does not appear as a visible image.

  In the third information area 30, a latent image made invisible by the third halftone dot pattern 60 and the fourth halftone dot pattern 70 is formed. However, the latent image is formed in a normal copying machine (for example, resolution 600 dpi). ) Is not displayed as a visible image, but is set so that a visible image is displayed by reading with a device having a higher resolution than a normal copier, for example, a scanner (resolution: 900 dpi) and outputting to a printer. .

  That is, the third halftone dot pattern 60 and the fourth halftone dot pattern 70 are set so that the total sum of the halftone dot areas included per unit region in each pattern is substantially equal. The size of each halftone dot included in the third halftone dot pattern 60 is set to a size (for example, 1200 dpi or more) that is not resolved by the scanner, and the individual halftone dot included in the fourth halftone dot pattern 70 is set. The halftone dot size is set to a size that can be resolved by the scanner (for example, 800 dpi or less).

As described above, in the third information area 30, only the halftone dots in one halftone dot pattern are resolved by the scanner, and as a result, the latent image is displayed as a visible image.
As described above, the latent image included in the third information area 30 cannot be displayed by a normal copying machine, but only by a device having a high resolution.
Therefore, invisible information with different security can be given to each of the second information area 20 and the third information area 30 by the copy check area having different properties.

  Items that can be used as printed materials of the present invention include gift certificates, gift certificates (department stores, supermarkets), travel tickets, beer tickets, book certificates, stationery tickets, gift tickets, stamps, income stamps, government postcards, prepaid cards, prepaid cards Security such as mobile phone cards, admission tickets (movies, concerts, events), tickets, shareholder coupon tickets, securities such as bills, checks, stock certificates, bonds, passports, ID cards, employee ID cards, insurance cards Can give a product.

Here , the printed matter of FIG. 1, which is a card on which personal information such as an employee card or insurance card is printed, will be described. The first information area 10 is an information area in which personal information of the card owner is described. For example, a name, company name, department, employee number, and logo mark are printed. UV inkjet printer, offset printing, silk printing, letterpress printing and the like.

As the printer used in the present invention, a UV inkjet printer having a high printing speed is preferable. Hereinafter, an example using a UV inkjet printer will be described. First, after personal information is printed in the first information area by the UV inkjet printer, the second halftone dot pattern 50 and the fourth pattern to be printed in the second information area 20 and the third information area 30 which are copy restraint areas. The halftone dot pattern 70 is determined in advance by an individual who is the owner, and data corresponding to the second halftone dot pattern 50 and data corresponding to the fourth halftone dot pattern 70 are stored electronically (by a computer or the like). The second halftone dot pattern 50 and the fourth halftone dot pattern 70 are printed by a UV inkjet printer. Further, the first halftone dot pattern 40 and the third halftone dot pattern 60 are printed with a halftone dot having a smaller area than the second halftone dot pattern 50 and the fourth halftone dot pattern 70 by the UV ink jet printer. The printing of the first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 may be performed simultaneously.

Here, the UV ink used in the UV inkjet printer will be described. In the UV ink, a polymerization initiator contained in the ink generates radicals by UV (ultraviolet light), and the ink is cured by a photopolymerization reaction. The ink polymerization type includes a radical polymerization type and a cationic polymerization type. In the radical polymerization type, a polymerization initiator is decomposed by UV to generate radicals, which react with monomers to polymerize. On the other hand, in the cationic polymerization type, the polymerization initiator is decomposed by UV to generate ions, which are polymerized by reacting with the monomer. What constitutes the ink is an additive such as a monomer and a polymerization initiator, a coloring material, a dispersant, and a surfactant. As described above, when UV is irradiated, the polymerization initiator becomes an active species and reacts with the monomer to become a new active species, which in turn reacts to polymerize the monomer to become a polymer and become a cured ink. Since the reaction is instantaneous, the accuracy of the image quality is significantly higher than that of normal ink.

  Since the maximum resolution of the UV inkjet printer used in the present invention is 1200 dpi, the second halftone dot pattern 50 and the fourth halftone dot pattern 70 are not exposed even when copying with a copier having a lower resolution than this, It becomes difficult to tamper.

  By printing the first information area 10, the second information area 20, and the third information area 30 with a UV ink jet printer, it becomes possible to manufacture a card more efficiently.

The second halftone dot pattern 50 uses characters and symbols, and the fourth halftone dot pattern 70 uses a picture, but is not limited thereto. The second halftone dot pattern 50 is information for specifying the identity, and for example, information such as name, employee number, date of birth, etc. can be formed. In this way, even if the first information area 10 is falsified, it is possible to confirm whether the card is a genuine card or a copy card by the second information area 20 and the third information area 30 that are copy check areas. Furthermore, since the copy check area is formed in two areas, it becomes difficult to tamper with and the security can be further improved. That is, the second halftone dot pattern 50 and the fourth halftone dot pattern 70 are changed to variable information for each card, and the variable information is provided in two copy check areas of the same card, thereby improving the security of the printed matter. It becomes possible.
The above is an example in which variable information is provided in two copy check areas, but the number of copy check areas is not limited to two, and any number of copy check areas may be provided.

  Specific examples will be described below.

Example 1
The card | curd base material used what can be used for a card | curd (85.6 mm x 54.0 mm) with a white thickness of 188 micrometers (brand U292W; Teijin DuPont Films make).
A UV inkjet printer having a resolution of 400 dpi, 800 dpi, or 1200 dpi was used.
As the ink for the UV inkjet printer, benzophenone was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
The first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 were simultaneously printed by a UV inkjet printer.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

(Example 2)
The card | curd base material used what can be used for a card | curd (85.6 mm x 54.0 mm) with a white thickness of 188 micrometers (brand U292W; Teijin DuPont Films make).
A UV inkjet printer having a resolution of 400 dpi, 800 dpi, or 1200 dpi was used.
As the ink for the UV inkjet printer, phenylphosphine oxide was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
The first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 were simultaneously printed by a UV inkjet printer.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

(Example 3)
The card | curd base material used what can be used for a card | curd (85.6 mm x 54.0 mm) with a white thickness of 188 micrometers (brand U292W; Teijin DuPont Films make).
A UV inkjet printer having a resolution of 400 dpi, 800 dpi, or 1200 dpi was used.
As the ink for the UV inkjet printer, phenylphosphine oxide was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
After printing the personal information in the first information area 10 with an inkjet printer,
The first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 were simultaneously printed by a UV inkjet printer.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

Example 4
The card | curd base material used what can be used for a card | curd (85.6 mm x 54.0 mm) with a white thickness of 250 micrometers (brand U292W; made by Teijin DuPont Films Ltd.).
A UV inkjet printer having a resolution of 400 dpi, 800 dpi, or 1200 dpi was used.
As the ink for the UV inkjet printer, benzophenone was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
The first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 were simultaneously printed by a UV inkjet printer.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

(Example 5)
The card base material used was a plant-based biodegradable film made of plant-derived plastic (polylactic acid) with excellent environmental suitability, which can be used for cards (Ecology, manufactured by Mitsubishi Plastics, Inc.). Further, a polyester-based anchor layer was applied on the card substrate.
A UV inkjet printer having a resolution of 400 dpi, 800 dpi, or 1200 dpi was used.
As the ink for the UV inkjet printer, benzophenone was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
The first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 were simultaneously printed by a UV inkjet printer.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

(Example 6)
The card base material used was a plant-based biodegradable film made of plant-derived plastic (polylactic acid) with excellent environmental suitability, which can be used for cards (Ecology, manufactured by Mitsubishi Plastics, Inc.). Further, a polyester-based anchor layer was applied on the card substrate.
A UV inkjet printer having a resolution of 400 dpi, 800 dpi, or 1200 dpi was used.
As the ink for the UV inkjet printer, phenylphosphine oxide was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
The first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 were simultaneously printed by a UV inkjet printer.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

(Example 7)
The card base material used was a plant-based biodegradable film made of plant-derived plastic (polylactic acid) with excellent environmental suitability, which can be used for cards (Ecology, manufactured by Mitsubishi Plastics, Inc.). Further, a polyester-based anchor layer was applied on the card substrate.
A UV inkjet printer having a resolution of 400 dpi, 800 dpi, or 1200 dpi was used.
As the ink for the UV inkjet printer, phenylphosphine oxide was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
After printing the personal information in the first information area 10 with an inkjet printer,
The first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 were simultaneously printed by a UV inkjet printer.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

(Example 8)
The card base material used was a plant-based biodegradable film made of plant-derived plastic (polylactic acid) with excellent environmental suitability, which can be used for cards (Ecology, manufactured by Mitsubishi Plastics, Inc.). Further, a polyester-based anchor layer was applied on the card substrate.
A UV inkjet printer having a high resolution of 1200 dpi was used.
As the ink for the UV inkjet printer, phenylphosphine oxide was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
After printing the personal information in the first information area 10 with an inkjet printer,
The first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 were simultaneously printed by a UV inkjet printer.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

Example 9
The card base material used was a plant-based biodegradable film made of plant-derived plastic (polylactic acid) with excellent environmental suitability, which can be used for cards (Ecology, manufactured by Mitsubishi Plastics, Inc.). Further, a polyester-based anchor layer was applied on the card substrate.
A UV inkjet printer having a high resolution of 1200 dpi was used.
As the ink for the UV inkjet printer, phenylphosphine oxide was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
Personal information in the first information area 10;
The first halftone dot pattern 40, the second halftone dot pattern 50, the third halftone dot pattern 60, and the fourth halftone dot pattern 70 were simultaneously printed by a UV inkjet printer.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

(Example 10)
The card base material used was a plant-based biodegradable film made of plant-derived plastic (polylactic acid) with excellent environmental suitability, which can be used for cards (Ecology, manufactured by Mitsubishi Plastics, Inc.). Further, a polyester-based anchor layer was applied on the card substrate.
As the ink for the UV inkjet printer, phenylphosphine oxide was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
Printing personal information in the first information area 10 with a UV inkjet printer having a resolution of 400 dpi,
The first halftone dot pattern 40 and the second halftone dot pattern 50 were printed by a UV inkjet printer having a resolution of 800 dpi and 400 dpi. Next, the third halftone dot pattern 60 and the fourth halftone dot pattern 70 were printed by a UV inkjet printer having a resolution of 1200 dpi and 800 dpi.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

(Example 11)
The card base material used was a plant-based biodegradable film made of plant-derived plastic (polylactic acid) with excellent environmental suitability, which can be used for cards (Ecology, manufactured by Mitsubishi Plastics, Inc.). Further, a polyester-based anchor layer was applied on the card substrate.
As the ink for the UV inkjet printer, phenylphosphine oxide was used as a polymerization initiator and acrylic acid ester was used as a monomer. After the ink was dropped on the card substrate, UV was irradiated to dry the ink.
Printing personal information in the first information area 10 with a UV inkjet printer having a resolution of 400 dpi,
The first halftone dot pattern 40 and the second halftone dot pattern 50 were printed by a UV inkjet printer having a resolution of 1200 dpi and 400 dpi. Next, the third halftone dot pattern 60 and the fourth halftone dot pattern 70 were printed by a UV inkjet printer having a resolution of 1200 dpi and 800 dpi.
A halftone dot pattern expression test was performed using a copier (600 dpi) and a scanner (900 dpi).

(Test result 1)
The halftone dot density in the first halftone dot pattern area is 1200 dpi.
The dot density in the second dot pattern area is 400 dpi.
The dot density in the third dot pattern area is 1200 dpi.
The halftone dot density in the fourth halftone dot pattern area is set to 800 dpi.
The printed matter is formed by a UV inkjet printer,
Evaluation was performed using a copier having a resolution of 600 dpi and a scanner having a resolution of 900 dpi.
As a result, a halftone dot pattern appeared as shown in Table 1.
In the table, ◯ indicates that a halftone dot has been reproduced, and ◎ indicates that a visible dot pattern is displayed in each information area.

(Test result 2)
The halftone dot density in the first halftone dot pattern area is set to 800 dpi.
The dot density in the second dot pattern area is 400 dpi.
The dot density in the third dot pattern area is 1200 dpi.
The halftone dot density in the fourth halftone dot pattern area is set to 800 dpi.
The printed matter is formed by a UV inkjet printer,
Evaluation was performed using a copier having a resolution of 600 dpi and a scanner having a resolution of 900 dpi.
As a result, a halftone dot pattern appeared as shown in Table 1.

DESCRIPTION OF SYMBOLS 10 1st information area 20 2nd information area 30 3rd information area 40 1st halftone dot pattern 50 2nd halftone dot pattern 60 3rd halftone dot pattern 70 4th halftone dot pattern

Claims (1)

In the printed matter in which variable information is printed by the printer for each of the first information area, the second information area, and the third information area, the second information area includes the first halftone dot pattern and the second information area. Formed from a halftone dot pattern, the third information area is formed from a third halftone dot pattern and a fourth halftone dot pattern, and the first halftone dot pattern and the third halftone dot pattern are the first halftone dot pattern , Compared to the halftone dot pattern and the fourth halftone dot pattern, the halftone dot area per unit area is equal and the density of the halftone dots is high, and the second information area and the third information are visually observed. A printed matter that makes it difficult to determine the halftone dot pattern formed in the area ,
In the second information area, the resolution of the first halftone dot pattern is set higher than the resolution of the copying apparatus, the resolution of the second halftone dot pattern is set lower than the resolution of the copying apparatus, and the third information In the region, the resolution of the third halftone dot pattern is higher than the resolution of the scanner device having a higher resolution than the copying device, the resolution of the fourth halftone dot pattern is higher than the resolution of the copying device, and Set lower than the resolution of the scanner,
Printed matter characterized by that.

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