JPH11221990A - Sheet with two-dimensional bar code - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet with two-dimensional bar codes for reading correct two-dimensional bar code information by a specified bar code reader while bringing unlegibility or the erroneous read of the two-dimensional bar code information in a duplicate by the bar code reader to prevent the unfair use of a copy of the two-dimensional bar code information. SOLUTION: A sheet bar 1 with two-dimensional bar code information is provided with two-dimensional bar code information 3 on a given section of a sheet surface, and dummy images 4 are provided continuously in a matrix of the two-dimensional bar code information 3, and the dummy images 4 are not sensed together with the two-dimensional bar code information 3 by a given bar code reader in a duplicate of the sheet with two-dimensional bar codes, while they are sensed together with the two-dimensional bar code information 3 by the bar code reader in a duplicate of the sheet with the bar code reader.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet provided with two-dimensional bar code information. The two-dimensional bar code information in a copy of the sheet is not read by optical machine or incorrectly read. It relates to a sheet with a two-dimensional barcode to be produced.

[0002]

2. Description of the Related Art Sheets provided with barcode information are:
At present, with the progress of POS system and FA, it is widely used in various fields such as manufacturing, distribution, and sales management. Recently, with the increase in the amount of information, two-dimensional barcodes that can hold more information are becoming widespread. However, recently, there has been a problem that two-dimensional barcode information, which has become extremely useful as an information storage medium, is duplicated by a copying machine and is illegally used. An example will be described below.

[0003] For example, an institution that provides contract services such as insurance and finance issues a certificate sheet describing the contents exchanged with a contract customer to the customer side, and a clerk visits each customer periodically. When you receive your monthly contract fee,
In most cases, a fee is collected by issuing a receipt based on the information described in the certificate form. According to the information, optical machine readable 2D barcode information will be applied, and at the time of collection of charges, work such as reading 2D barcode information and inputting information of collection fee will be performed, and receipt issuance and By inputting information into the database of the management department, work efficiency has been improved.

[0004] However, in such a system in which the customer's continuation of the contract is confirmed only by reading the two-dimensional bar code information, there has been a problem that the clerk inputs information incorrectly, such as an increase in the number of contractors. . In other words, in order to achieve the target such as the number of contractors, the contracted certificate paper is copied, the information of the canceling person is incorrectly input from the two-dimensional barcode information in the copy, and the number of contractors is inflated The problem has arisen.

[0005]

Therefore, according to the present invention, the two-dimensional bar code information on a regular sheet can be read by a predetermined bar code reader, but the two-dimensional bar code information on the copy is It is another object of the present invention to provide a sheet with a two-dimensional barcode, which makes the barcode reader unreadable or erroneously read, thereby preventing unauthorized use of the two-dimensional barcode information by copying.

[0006]

Means for Solving the Problems The present inventors have found that in a matrix of two-dimensional bar code information, a sheet with a regular two-dimensional bar code is not detected by a predetermined bar code reader, but is not detected in a copy. It has been found that such a problem can be achieved by applying a detected dummy image, and the present invention has been made.

That is, the sheet with a two-dimensional barcode of the present invention has two-dimensional barcode information provided in a predetermined portion of the sheet surface, and a dummy image is provided in a matrix of the two-dimensional barcode information. In a sheet with a two-dimensional barcode, the dummy image is not detected by a predetermined barcode reader, but in a copy of the sheet with a two-dimensional barcode, the barcode reader includes the two-dimensional barcode information together with the two-dimensional barcode information. It is characterized by being detected.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a sheet with a two-dimensional barcode of the present invention will be described in detail with reference to examples. In the accompanying drawings, FIG. 1 is a plan view of a sheet with a two-dimensional barcode of the present invention, FIG. 2 is an enlarged plan view of a peripheral area of the two-dimensional barcode information of FIG. 1, and FIG. It is a line sectional view.

[0009] Sheet 1 with a two-dimensional bar code of this embodiment
Is an “insurance certificate”, as shown in FIG.
The surface is provided with an information recording section 2 for displaying variable information relating to the name of the contractor, the contract date, the contents of the contract, and the like. Two-dimensional barcode information 3 is provided which encodes the variable information for optical machine reading. Although not shown, fixed information such as a contract is printed on the back side.

The most distinctive feature of the sheet 1 with a two-dimensional barcode of the present invention is that a dummy image 4 is provided in a matrix of two-dimensional barcode information 3 as shown in FIGS. There. The number of the dummy images is plural in the present embodiment, but may be one if a desired operation is obtained.

In the present embodiment, the two-dimensional barcode information 3 is printed with black ink at a PCS value of 96% at a reading wavelength of 660 nm, and further, in its matrix, 660 nm reading with reddish brown ink. A dummy image 4 in which the PCS value with respect to the wavelength is 64% is printed. In this configuration, the read wavelength 66
The two-dimensional barcode information 3 on the two-dimensional barcode-attached sheet 1 can be read without any problem by a 0 nm barcode reader, but in the copy, the copied two-dimensional barcode information and the dummy image can be visually recognized. At the same time as it appeared to be in a united state, it could not be read at all with the bar code reader described above.

That is, in the present invention, the dummy image is a normal two-dimensional bar-coded sheet.
In order to properly read only the two-dimensional bar code information with a predetermined bar code reader, drop out the optical reading based on the light wavelength and set the copy machine so that the two-dimensional bar code information can be read properly. Regardless of how the copy is obtained, if the two-dimensional barcode information in the copy is optically read by the barcode reader, the two-dimensional barcode information is detected together with the two-dimensional barcode information. The color, the reflectance, the reflection density, and the PCS value are set as appropriate so as to make reading impossible or erroneous reading.

For example, the reading wavelength of a bar code reader is usually 600 to 700 nm, and the PCS value of bar code information for a predetermined reading wavelength in this range is 7 nm.
Since 5% or more is required, the dummy image has a PCS value of less than 75% for a regular two-dimensional bar-coded sheet and a PCS value of 75% or more with respect to the reading wavelength of the dummy image. The printing conditions are specified as described above.

[0014]

As described above, according to the sheet with a two-dimensional barcode of the present invention, a sheet with a regular two-dimensional barcode is not detected by a predetermined barcode reader, but is not detected in a copy. By applying a dummy image detected by a barcode reader in a matrix of two-dimensional barcode information, it is possible to prevent the illegal use of two-dimensional barcode information by copying.

[Brief description of the drawings]

FIG. 1 is a plan view of a sheet with a two-dimensional barcode of the present invention.

FIG. 2 is an enlarged plan view of the area around the two-dimensional barcode information in FIG. 1;

FIG. 3 is a sectional view taken along line XX of FIG. 2;

[Explanation of symbols]

 1 Sheet with 2D barcode 3 2D barcode information 4 Dummy image

Claims (1)

[Claims] 1. A sheet with a two-dimensional barcode, wherein two-dimensional barcode information is provided on a predetermined portion of a sheet surface, and a dummy image is given in a matrix of the two-dimensional barcode information. The dummy image is
A sheet with a two-dimensional barcode, which is not detected by a predetermined barcode reader, but is detected together with the two-dimensional barcode information by the barcode reader in a copy of the sheet with the two-dimensional barcode.