JPH0574875U - Printed body with code mark - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a printed material having a code mark that cannot be forged or tampered with by recording the code mark on the printed material with a color-changing ink. [Structure] For each piece of information, the "T" -shaped painted area is divided into four display areas, first to fourth, and printing is performed by recording code marks for each data in the combination in the case of painting. A printed body having a code mark, characterized in that it is printed on the first to fourth display areas of the code mark with a transparent or colored discoloring ink that discolors due to temperature rise or temperature decrease.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a printed material having a code mark which requires security and is optically machine readable, and which prevents the forgery and falsification. In detail, the code mark is provided as an amount information column such as a prepaid card and other individual information code mark of securities to prevent forgery and falsification.

[0002]

[Prior Art]

 Conventionally, there has been a method of recording data displayed on an object by using a barcode. However, if a large amount of data is recorded by one bar code, the length of the bar code in the array direction becomes long, and there is a possibility that the bar code reader may misread the data.

On the other hand, in order to simplify the recording of such data, as shown in FIGS. 2 (a) and 2 (b), a filled portion is formed in a “square” shape for one piece of information. It is a printed material in which the code marks for each data are recorded by dividing the display areas into four display areas from 1 to 4 and the combination of the filling areas. It is proposed in Japanese Patent No. 32093. In this recording method, if the first display area and the fourth display area are filled, for example, a numerical value of 1001 in binary system (9 in decimal system) can be recorded.

[0004]

[Problems to be solved by the device]

 However, in the code mark method in Japanese Patent Laid-Open No. 63-132093, since the first to fourth portions of the "T" -shaped painted portion are filled, the recording by hand painting or printing becomes solid black. ing. For this reason, the code mark can be visually read and the data content can be easily analyzed. Therefore, the code mark can be easily copied (copiable) and the copied code mark can be correctly read by the reader. Can be read. In addition, by filling or erasing the inside of the display area of the code mark with white or black ink, the data content can be easily modified and changed, and it is easy to be tampered with by forgery or cutting and pasting. In addition, there is a problem that the reader cannot distinguish the code mark that is forged or falsified.

Therefore, an object of the present invention is to focus on the above-mentioned problems, and it is impossible to prevent forgery or falsification by recording a code mark on a printed material by printing with a transparent or colored discoloring ink. It is intended to provide a printed material having

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention divides a "T" -shaped painted portion into four areas of the first to fourth display areas for one piece of information, and combines the filled areas. And a coded mark as each data, which is printed on the first to fourth display areas of the code mark by a transparent or colored discolorable ink that changes depending on the temperature rise or fall. It is a printed material having a code mark (10) characterized by the following. In addition, the code mark (10) is characterized by being recorded with several kinds of color-changing inks that change color differently at the indicated temperature.

[0007]

[Action]

 The printed material having the code mark of the present invention has a code mark recorded by printing with a transparent or colored discoloring ink that changes color when the temperature rises or falls. Since the content of the numerical data of the code mark changes when it is colored or erased or changed to a different color from the color, the correct data cannot be visually deciphered.Therefore, falsification by copying or cutting and pasting, or repair Counterfeiting is difficult.

In addition, by changing the color to a desired color by raising (heating) or lowering (cooling) temperature, it is possible to determine whether it is a forged ticket or a genuine ticket, and unlike the conventional solid black ink filling. , Numerical data is displayed on the 1st to 4th display areas using several types of color-changing inks that change color depending on the indicated temperature, making it easy to detect forgery and falsification, and forgery and falsification are impossible. Becomes

[0009]

【Example】

 A printed body having a code mark according to the present invention will be described with reference to the drawings.

The present invention relates to a printed body having a code mark printed with a transparent or colored discoloring ink capable of adjusting discoloration of coloring and erasing by raising or lowering the temperature, as shown in FIG. As shown in b), by printing and filling any one of the first to fourth display areas in a "square" shape, a code mark is formed and numerical data is obtained. Liquid crystal ink may be used as the transparent or colored discolorable ink, but for example, Metamo ink manufactured by Pilot Ink Co., Ltd. is most suitable.

As the metamo ink (manufactured by Pilot Ink Co., Ltd.), for example, when a code mark is printed using metamogravure ink (33 ° C., black), it is transparent at room temperature and black by heating (about 33 ° C.). Since the color changes to, it is not possible to copy the code mark at room temperature. Similarly, if you use Metamogravure ink (30 ° C pink) and print on a solid green print, the sepia-colored code mark will turn green at 30 ° C or higher at room temperature, so numerical data will be displayed depending on the color. If you put it on the blackboard, it will be meaningless even if you make a color copy at room temperature.

For example, as shown in FIG. 1, the metamogravure ink (15) (33 ° C.) which is transparent at room temperature to the fourth display area which is divided into first to fourth display areas in a “rice field” shape is used. , Black) and printing all the areas with OP varnish for metamo (16) (manufactured by Pilot Ink Co., Ltd.) to make a code mark. 4 The display area turned black, and the code data recorded was "4". On the contrary, when the temperature is lowered and the temperature is returned to room temperature, the color is erased and a blank code mark is formed.

By using the color-changing ink capable of changing the color by the temperature rise and decrease as described above, for example, an image is captured by a CCD camera equipped with a desired filter according to the color of the color. , This signal can be input to a microcomputer and converted into numerical data under the control of the microcomputer.

Further, by printing the first to fourth display areas of the code mark with several kinds of color-changing ink, a code mark whose color changes in several steps as the temperature rises can be made. For example, when the metamogravure ink (30 ° C., pink) and the metamogravure ink (33 ° C., black) are printed on a solid green plate, a sepia color at 28 ° C. or lower, a green color at 28 ° C. to 35 ° C., 35 At temperatures above ℃, it can change in three stages such as black, and after raising it to each temperature, it is captured by a CCD camera and converted into numerical data by a microcomputer, and the numerical software including the colors to be colored is determined. If this is done, it is possible to completely prevent tampering by copying or cutting and pasting and forgery due to repairs.

[0015]

[Effect of the device]

 In the present invention, a code mark is printed by recording with a color-changing ink. By changing the color of the code mark by raising or lowering the temperature, it is possible to visually determine whether it is a forged ticket or a genuine note, and it is also possible to copy or copy it. The printed material has a code mark that cannot be tampered with by cutting and pasting or forged by repair. In addition, it is possible to prevent forgery and falsification by deciding the numerical data according to each changing color, and it becomes difficult to read the numerical data by visual inspection, and the security is improved.

[Brief description of drawings]

1A and 1B are explanatory diagrams showing an example of recording a code mark using a color-changing ink.

FIG. 2 (a) is an explanatory diagram of a code mark in which a “rice field” -shaped filled portion is divided into first to fourth display areas.
(b) It is explanatory drawing of the code mark used as each numerical data by the combination of the place of painting.

[Explanation of symbols]

 1 …… 1st display area 2 …… 2nd display area 3 …… 3rd display area 4 …… 4th display area 10 …… Code mark 15 …… Metamo gravure ink 16 …… OP varnish for metamo

Claims (2)

[Scope of utility model registration request] 1. A piece of information is divided into a "T" -shaped filled area into four display areas, first to fourth, and a code mark for each data is recorded by a combination of the filled areas. A printed body, the first of the code marks
A printed body having a code mark, wherein the fourth display area is printed with a transparent or colored discoloring ink that discolors due to temperature increase or decrease. 2. The printed body having a code mark according to claim 1, wherein the code mark is printed with several kinds of color-changing inks that change in color differently at an indicated temperature.