KR100874753B1 - Secure Printing System and Secure Printing Method - Google Patents

Abstract

A secure printing system and a secure printing method thereof are disclosed. The secure printing method according to the present invention comprises the steps of printing the recognition data consisting of the colors of the preset primary colors, and printing so that the recognition data is covered with the same color as the color of the paper on which the recognition data is printed. And classifying the images of the document to be printed into a plurality of primary colors, and sequentially printing the primary primary colors having high brightness for each of the classified primary colors. In this way, the secure printing method does not deform the design image of the printed matter, and the pattern of the secure printing is not exposed, thereby improving the security.

Description

Secure printing system and secure printing method {Security printing system and method eg}

1 schematically shows a typical printing system,

2 schematically illustrates an embodiment of a secure printing system according to the present invention;

3 is a flowchart illustrating a secure printing method by the secure printing system of FIG.

4 is a view showing a blending example of the respective primary colors used in the secure printing method of FIG. 2 as a look-up table, and

FIG. 5 is a diagram illustrating an example of recognition data inserted by the secure printing method of FIG. 2.

Explanation of symbols on the main parts of the drawings

10, 110: Original image

20, 130: basic primary color classification unit

30, 140: plate setting unit

40, 150 printing unit

The present invention relates to a secured printing system and a secured printing method, and more particularly, to reduce the cost of printing invisible data and not to damage the printed image of the printed material. The present invention relates to a security printing system and a method for increasing product value.

In recent years, with the rapid development of computer science, as the performance of advanced equipment such as printers, scanners, digital cameras, and the like, forgery or modulation technologies such as general documents, securities, and various certificates have been developed day by day.

Here, forgery means that an unauthorized person makes a document, securities, or various documents similar or identical to the originals of documents, securities, or various proof documents. Documents, securities, or various certificates printed or copied directly by using a scanner, printer, or copying machine correspond to counterfeit documents, counterfeit securities, or various counterfeit documents.

In addition, the alteration means that an unauthorized person changes the appearance of the document, the securities, or the originals of various proof documents by changing the contents. This includes changing the face value of a security from low to high, changing the issue date or interest payment date to increase the value of the security, or changing certain parts such as the name of various certificates.

As counterfeit or tampering techniques evolve, counterfeit or tampered documents, securities, or various certificates become more precise, and visual identification becomes increasingly difficult. In particular, documents, securities, and various certificates forged or altered to the extent that their color, shape, shape, and the like are very similar to the originals are copied or printed as they are so confusing as originals by a general copier, printer, or the like.

The circulation of counterfeit or falsified securities causes confusion in the entire financial market, including the securities market, and the distribution of counterfeit or falsified certificates undermines the credibility of various national and private institutions, resulting in confusion in the entire national and commercial order. This is caused.

Therefore, when printing genuine securities and various certificates, by using special pigments such as infrared rays, ultraviolet rays, and magnetics, a secure printing method for identifying genuine securities, various certificates, and forged or tampered securities, various certificates, etc. This was developed.

1 is a diagram for explaining a general printing system. Referring to the drawings, the printing system includes a basic primary color sorting unit 20, a plate material setting unit 30, and a printing unit 40.

The primary primary color classification unit 20 classifies the image 10 of the original for printing into a plurality of primary primary colors. In this case, since the general printing apparatus prints an image using four basic primary colors of M (Magenta), C (Cyan), Y (Yellow), and K (black), the basic primary color classification unit 20 is a general printing apparatus. Correspondingly, the original image is classified into four primary colors: M (Magenta), C (Cyan), Y (Yellow), and K (black).

The plate setting unit 30 supplies the inks of the respective primary primary colors classified by the primary primary color classification unit 20 to the plate for printing provided in the same number as the primary primary colors classified. That is, the first plate is supplied with ink corresponding to K (black), the second plate is supplied with ink corresponding to C (Cyan), and the third plate is supplied with ink corresponding to M (Magenta), The fourth plate is supplied with ink corresponding to Y (Yellow).

The printing unit 40 prints an image of the original on the printing paper based on the ink of each primary primary color supplied by the plate setting unit 30. At this time, in the arrangement of each plate, ink corresponding to K (black) is supplied first, and then ink corresponding to C (Cyan) is supplied according to the advancing direction of the printing paper passing through the printing path. The ink is preferably arranged to be supplied in the order of the ink corresponding to M (Magenta) and the ink corresponding to Y (Yellow). This is because the relatively light ink is supplied first, so that the light ink is buried in the dark ink, and as a result, the image is formed in a color different from the intended color.

In general, in the case of secure printing using the above printing system, an ink that reflects or absorbs ultraviolet rays or infrared rays is mixed with at least one primary primary color. However, if the special ink is directly mixed with the general ink, the characteristics of each color of the ink may be deformed, thereby degrading the print image of the printed matter. In addition, since the characteristics of the special ink are directly exposed to the outside of the image, there is a problem that there is a high risk of exposure of the pattern of the secure printing.

The present invention has been made to solve the above problems, and relates to a security printing system and a method which does not deform a print image of a printed matter and also improves security since the pattern of the secure printing is not exposed.

Security printing method according to the present invention for achieving the above object, the step of printing a recognition data consisting of a predetermined primary color; Printing the recognition data with the same color as the color of the paper on which the recognition data is printed so as to cover the printed area; Classifying an image of an original for printing into a plurality of primary colors; And sequentially printing the primary primary colors classified from the primary primary colors having high brightness.

The secure printing method may further include setting an overlapping area between an area where an image of the original is to be printed and an area where recognition data is to be printed as a region of interest, wherein the area for recognition data is to be printed. It is preferable that the image of the original is implemented to fall within the area to be printed.

In addition, the recognition data is set to a primary primary color of K (black) of the primary primary colors of M (Magenta), C (Cyan), K (black), and Y (Yellow), and is implemented with an ink containing carbon It is preferable.

Alternatively, the recognition data is set as the primary primary color of K (black) among the primary primary colors of M (Magenta), C (Cyan), K (black), and Y (Yellow), and the set primary primary color of K is infrared It may also be implemented with a sensing ink.

Alternatively, the recognition data is set to a basic primary color of K (black) among the primary primary colors of M (Magenta), C (Cyan), K (black), and Y (Yellow), and the set primary primary color of the K is ultraviolet rays. It may also be implemented with a sensing ink.

Here, the paper is preferably set to white.

At this time, the secure printing method, it is preferable to further include the step of adjusting the density of the color by repeating the step of printing so that the recognition data covers the printed area.

In addition, the classification step classifies the image of the document for printing into four primary colors of M (Magenta), C (Cyan), K (black), and Y (Yellow), and among the classified primary colors The primary primary color of K is preferably formed by mixing the remaining primary primary colors.

On the other hand, the secure printing method includes a basic primary color classification unit for classifying a primary primary color of recognition data and a plurality of primary primary colors corresponding to an image of an original for printing; A plate setting comprising a first printing plate material corresponding to a primary primary color of the recognition data, a second printing plate material corresponding to a color of printing paper, and a plurality of third printing plate materials corresponding to respective primary primary colors of the original image. part; And a printing unit which sequentially prints each of the plurality of third printing plate materials on the printing paper printed in the order of the second printing plate material from the first printing plate material.

As a result, the secure printing system and the secure printing method according to the present invention do not deform the print image of the printed matter, and the pattern of the secure printing is not exposed, thereby improving security.

Hereinafter, a secure printing system and a secure printing method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram schematically showing an embodiment of a secure printing system according to the present invention. Referring to the drawings, the security printing system includes a basic primary color classification unit 130, a plate material setting unit 140, and a printing unit 150.

Here, the primary primary color classification unit 130 classifies the primary primary colors of the recognition data and a plurality of primary primary colors corresponding to the image of the original for printing. At this time, the primary primary color of the recognition data is preferably set by the user, and the primary primary color classification unit 130 prints the original M (Magenta), C (Cyan), K (black), and Y ( Yellow) or as primary colors of R (Red), G (Green), and B (Blue). The figure shows a case where the basic primary color of the recognition data is set to K (black). In addition, in order to distinguish between any one of the primary primary colors classified by the primary primary color classification unit 130 and the primary primary colors of the recognition data, the primary primary colors of the recognition data is K (black), and the primary The primary primary colors classified by the primary color classification unit 130 are denoted by K '. However, it is clear that the colors of both primary colors are the same color.

The plate setting unit 140 may include a first printing plate that corresponds to the primary primary color of the recognition data, a second printing plate that corresponds to the color of the printing paper, and a plurality of third printing plate materials corresponding to the respective primary primary colors of the original image. It is provided. That is, the plate material for printing the recognition data when the basic primary color of the recognition data is set to K and the plate material for printing the color of the printing paper when the color of the printing paper is set to W (white). (W plate) and plate materials (C plate, M plate, Y plate, and K 'plate) corresponding to each of the primary colors of the original images classified by the primary primary color classification unit 130 are provided.

The printing unit 150 prints the paper in the order of the second printing plate from the first printing plate of the plate setting unit 140, and sequentially prints each primary primary color of the third printing plate on the printed paper in this order. do. That is, the printing unit 150 is implemented to print the basic primary color of the recognition data on the original paper first, and then overwrite the printing of the recognition data again with the color of the paper, and to print the image of the original thereon. .

3 is a flowchart illustrating a secure printing method by the secure printing system of FIG. 2. 2 and 3 will be described in detail the operation and operation of the secure printing system according to an embodiment of the present invention.

In the secure printing system, an area of overlap of an area where an image of an original is printed and an area where recognition data is to be printed is set as a region of interest (S101). At this time, it is preferable that the area where the data for recognition is to be printed is implemented to belong to the inside of the area where the image of the original is to be printed.

The primary primary color classification unit 130 classifies the primary primary color of the recognition data and the image 110 of the original for printing into a plurality of primary primary colors (S103). At this time, the basic primary color classification unit 130 of the secure printing system according to the present invention is similar to the basic primary color classification unit 20 of the general printing system, and the image of the original is M (Magenta), C (Cyan), Y (Yellow) It is preferable to classify into four primary colors, K (black). However, the basic primary colors classified by the primary primary color classification unit 130 are not limited to four types of M (Magenta), C (Cyan), Y (Yellow), and K (black), and other primary colors are added or excluded. May be In addition, the types of the primary primary colors classified by the primary primary color classification unit 130 are not limited to M (Magenta), C (Cyan), Y (Yellow), and K (black), and R (Red) and G (Green). ), It may be classified as the primary primary color of B (Blue).

In this case, it is preferable that the basic primary color of the recognition data is set as the primary primary color of K (black), and in the drawing, the primary primary color of the recognition data is K, and one of the primary primary colors for the image of the original is K '. Notation.

The plate setting unit 140 corresponds to each of the primary primary colors classified by the primary primary color classification unit 130 with respect to each printing plate provided with the same number as the primary primary colors classified, and the ink corresponding thereto. To supply. That is, the ink for K (black) corresponding to the basic primary color of the recognition data is supplied to the first printing plate, and the ink corresponding to W (white) corresponding to the color of the printing paper is supplied to the second printing plate. The third printing plate is supplied with inks corresponding to C (Cyan), M (Magenta), Y (Yellow), and K '(black) corresponding to the image of the original. At this time, the ink of the K plate corresponding to the recognition data and the ink of the K 'plate corresponding to the original image are the same, but the characteristics of the respective inks are preferably set differently. In other words, the K plate corresponding to the recognition data is preferably UV sensing ink or infrared sensing ink, and the K 'plate corresponding to the image of the original may be a general black ink. Alternatively, the K plate corresponding to the recognition data uses the general ink, and the general primary color corresponding to the image of the original is different primary primary colors, that is, M (Magenta). Inks produced by mixing primary colors of C, Cyan, and Y (Yellow) may be used. Alternatively, such characteristics may be used in combination with each other. An example of mixing such an ink is as shown in FIG.

The printing unit 150 first prints the primary primary color of the recognition data on the original paper (S105). Here, the recognition data is author information (watermark) for preventing forgery or alteration of original images such as documents, securities, or various certificates, and cannot be recognized by a general user and can be recognized by a special device. In other words, watermarking technology can be classified into visible watermarking and invisible watermarking technology according to visibility of watermark. The visible watermarking technology is an author who can visually check the original image. The copyright is specified by inserting information, and the invisible watermarking technology is a technology of inserting a watermark so that it cannot be visually detected using the sensory limits of the human visual system (HVS). The recognition data according to the present invention inserts data which is not visually sensed in a specific pattern according to an invisible watermarking technique into a dot pattern, so that the author information can be recognized by a special device.

The recognition data may be printed in a certain shape, as shown in FIG. 5A, or may be printed in a patterned pattern as shown in FIG. 5B, or inserted into another encrypted code.

After printing the data for recognition on the paper, the printing unit 150 prints to cover the area where the data for recognition is printed in the same color as the color of the paper (S107). At this time, the printing unit 150 by repeatedly printing the same color as the color of the paper several times, it is preferable to equalize the color of the surrounding paper (color of the paper outside the region of interest) and the density of the color of the region of interest ( S109). In the drawing, the color of the paper is set to white, and accordingly, the printing unit 150 repeatedly prints the ROI on which the recognition data is printed, covering the area of white.

When the density of the ROI in which the recognition data is printed is equal to the density outside the ROI, the print # 150 sequentially prints the primary primary color having high brightness for each primary primary color of the image of the original (S111). That is, when the image of the original is classified as the primary colors of M (Magenta), C (Cyan), K '(black), and Y (Yellow), the primary colors of K' (black) with high brightness are printed. It is preferable to print in the order of C (Cyan), M (Magenta), and Y (Yellow). This is to prevent the low primary brightness from being hidden by the high primary brightness.

As a result, the security printing system and method thereof according to the present invention do not deform the pattern image of the printed matter, and the pattern of the security printing is not exposed, thereby improving security.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the specific embodiments of the present invention without departing from the spirit of the present invention as claimed in the claims. Anyone skilled in the art can make various modifications, as well as such modifications are within the scope of the claims.

According to the present invention, the secure printing system can further enhance the security of the secure print by not exposing the recognition data to the outer surface of the printed image.

Further, according to the present invention, since the color, brightness, and the like of the original image are maintained as it is, damage to the original image due to the insertion of a watermark can be prevented.

In addition, the secure printing system according to the present invention may be possible to secure print without using a special ink, it is possible to reduce the cost required for secure printing.

Claims (9)

Printing recognition data comprising a preset primary color; Printing the recognition data with the same color as the color of the paper on which the recognition data is printed so as to cover the printed area; Classifying an image of an original for printing into a plurality of primary colors; And And sequentially printing the primary primary colors classified from the primary primary colors having high brightness. The method of claim 1, Setting an overlapping area of the area where the image of the original is to be printed and the area where the recognition data is to be printed as the ROI, And the area to which the recognition data is to be printed is within the area to which the image of the original is to be printed. The method of claim 1, The recognition data is set as the primary primary color of K (black) among the primary primary colors of M (Magenta), C (Cyan), K (black), and Y (Yellow), and is implemented using ink containing carbon. Secure printing method. The method of claim 1, The recognition data is set as the primary primary color of K (black) among the primary primary colors of M (Magenta), C (Cyan), K (black), and Y (Yellow), and the set primary primary color of K is for infrared detection. A secure printing method, characterized in that implemented in ink. The method of claim 1, The recognition data is set as the primary primary color of K (black) among the primary primary colors of M (Magenta), C (Cyan), K (black), and Y (Yellow), and the set primary primary color of K is for ultraviolet detection A secure printing method, characterized in that implemented in ink. The method of claim 1, And the paper is set to white. The method of claim 1, And repeating the step of printing the recognition data so as to cover the printed area to adjust the density of colors. The method according to any one of claims 3 to 5, The classification step classifies the image of the original for printing into four primary colors of M (Magenta), C (Cyan), K (black), and Y (Yellow), wherein the K of the classified primary colors The primary primary color of the security printing method, characterized in that formed by mixing the remaining primary primary colors. A primary primary color classification unit for classifying a primary primary color of recognition data and a plurality of primary primary colors corresponding to an image of an original for printing; A plate setting comprising a first printing plate material corresponding to a primary primary color of the recognition data, a second printing plate material corresponding to a color of printing paper, and a plurality of third printing plate materials corresponding to respective primary primary colors of the original image. part; And And a printing unit which sequentially prints each of the plurality of third printing plate materials on the printing paper printed in the order of the second printing plate material from the first printing plate material.

Images