JPH0567252A - Business card with barcode and its barcode reader - Google Patents

Abstract

(57) [Summary] [Structure] A normal business card 1 is prepared in which characters 11 are printed with a character printing ink produced by a face having neither absorption nor reflection in the infrared region. A bar code is printed at a predetermined position on the ordinary business card 11 with a specific ink having a pigment that has absorption and reflection in the infrared region and has little or no absorption and reflection in the visible region. [Effect] Since the bar code is invisible and the characters can be printed on top of each other, the printing area of the characters is not narrowed and the appearance is not impaired.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a business card with a bar code and its bar code reader.

[0002]

2. Description of the Related Art In recent years, with the spread of notebook personal computers and electronic notebooks, it has been considered to organize business cards using these devices. For example, a business card in which a company name, name, telephone number, etc. are bar-coded and printed is popularized, and the receiving side inputs the information into a computer by a bar code reader and manages the business card information. Is.

The bar code of this business card with bar code is
It was usually visibly printed with black ink or the like on the front surface or the back surface.

[0004]

This conventional business card with a bar code not only spoils the aesthetic appearance because the bar code is visibly printed with black ink or the like.
There is a drawback that the bar code occupies a large area and the printing area of the character is reduced.

An object of the present invention is to provide a business card with a bar code and a bar code reader for the same, which does not reduce the printed area of characters and does not impair the aesthetics.

[0006]

A bar code-equipped business card according to the first aspect of the invention absorbs infrared light in a predetermined position of a normal business card in which predetermined characters including a name are printed with a character printing ink. And a bar code is printed by using a specific ink with a pigment having reflection and having no absorption or reflection in the visible region or being small enough.

Further, the ink for printing characters has a wavelength of 780
It is produced by a pigment having neither absorption nor reflection in the infrared region of nm or more.

The bar code reader of the second invention has a wavelength of 7
A light source that emits light in the infrared region of 80 nm or more, a condenser lens that condenses the light emitted from this light source, guides the condensed light onto the barcode of the business card with the barcode, and the barcode It has a bar code detector including an objective lens for receiving the reflected light from the bar code and a light receiving diode for detecting the reflected light from the bar code received through the objective lens.

[0009]

The ink for printing the bar code according to the present invention has no absorption or reflection in the visible region,
Alternatively, it is made of a pigment that is sufficiently small to be imperceptible and has a large absorption or reflection with respect to light having a wavelength of 780 nm or more emitted by a light source incorporated in a barcode reader.

A bar code printed with such an ink is barely visible to the eye, and an ink having a spectrum which does not overlap with the absorption or reflection spectrum of the bar code ink is provided above or below the bar code. It is possible to print letters and pictures using it. If you print such a bar code at a predetermined position on the business card, this information can be read out by the bar code reader, and it does not spoil the aesthetics, and the area for printing characters for the bar code is narrowed. There is no need to be killed.

Further, the bar code detecting section of the bar code reader is constructed so as to match the characteristics of the bar code ink.

[0012]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a plan view showing an example of a business card with a barcode according to the present invention.

In this embodiment, a predetermined character 11 including a name is formed by a character printing ink made of a pigment having neither absorption nor reflection in the infrared region having a wavelength of 780 nm or more.
A bar code 2 is printed at a predetermined position on a normal business card 1 on which is printed with a specific ink that is a pigment that has no absorption or reflection in the infrared region or is sufficiently small.

For the specific ink for printing the bar code 2, a benzoperyleneindigo derivative was used as a pigment having a large absorption in the infrared region. This compound has a structure as shown in FIG. 2, and the absorption spectrum in pyridine shows some absorption in the visible region as shown in FIG. 3, but the absorption in the infrared region is very large and the maximum absorption is observed. The wavelength is 880 nm. This compound was used as a pigment, and the other components were manufactured by adding a varnish and kneading the same as in ordinary printing ink.

Other examples of the pigment used in this specific ink include other indigo compounds, phthalocyanine compounds, cyanine compounds, but are not limited to these examples.

In manufacturing the business card with the bar code, first, one having no light absorption and reflection spectrum in the infrared region is selected from the black printing inks, and the company name, name, etc. are selected in the same manner as a general business card. Printed. Next, using the specific ink produced by the above-described method, information such as company name and name was bar-coded and printed on the previously printed characters. The bar code 11 printed on this normal business card 11 is barely visible, and the bar code 1 is barely displayed by changing the angle of the line of sight to adjust the reflection state of the light of the illumination.
The presence of No. 1 could be confirmed, and the readability and aesthetics of the characters were the same as those of general business cards.

Further, since the character 11 and the barcode 2 can be printed in an overlapping manner, and the barcode 2 is almost invisible, the printing area of the character 11 is not obscured by the barcode 2.

FIG. 4 is a partially cutaway side view of the bar code detecting portion of the bar code reader of the present invention.

The bar code detecting section 50 of this embodiment comprises a semiconductor laser 51 as a light source for emitting light in the infrared region having a wavelength of 780 nm or more, and a condenser lens 52 for condensing the light from the semiconductor laser 51. An objective lens 54 that guides the condensed light onto the bar code of the business card 20 with the bar code and receives the reflected light from the bar code, and the reflected light from the bar code received through the objective lens 54 is detected. It has a configuration including a light receiving diode 53.

The bar code detecting section 50 having the above configuration
When the bar code reader having the above was connected to a bar code reading computer and the bar code 11 printed on the bar coded business card 20 was read, the data could be read.

[0022]

As described above, according to the present invention, the absorption and reflection spectra of the ink for printing ordinary characters and the ink for printing barcodes do not overlap, and the ink for printing barcodes is in the visible region. Since there is no absorption or reflection at all or it is small enough, normal characters and barcodes can be overlapped and the barcodes are almost invisible, so the printing area of the characters is not narrowed. Moreover, there is an effect that it does not spoil the aesthetics.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a business card with a barcode according to the present invention.

FIG. 2 is a diagram showing a chemical structure of a pigment of the ink for printing the barcode of the embodiment of FIG.

FIG. 3 is a spectral characteristic diagram of a pigment having the chemical structure shown in FIG.

FIG. 4 is a partially cutaway side view of a barcode detection portion of an embodiment of a barcode reader of the present invention.

[Explanation of symbols]

 1 Normal Business Card 2 Bar Code 11 Characters 20 Business Card with Bar Code 50 Bar Code Detection Unit 51 Semiconductor Laser 52 Condensing Lens 53 Light Receiving Lens 54 Objective Lens

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Claims (3)

[Claims] 1. An absorption and a reflection in an infrared region and a absorption and a reflection in a visible region at a predetermined position of an ordinary business card on which a predetermined character including a name is printed by a character printing ink. A business card with a bar code, characterized in that the bar code is printed with a specific ink using a sufficiently small pigment. 2. The ink for printing characters has a wavelength of 780 nm.
The business card with a barcode according to claim 1, which is produced from the above-mentioned pigment having neither absorption nor reflection in the infrared region. 3. A light source that emits light in the infrared region having a wavelength of 780 nm or more, a condenser lens that condenses the light emitted from this light source, and the condensed light on a bar code of a business card with a bar code. A bar code detector including an objective lens for guiding and receiving reflected light from the bar code, and a light receiving diode for detecting reflected light from the bar code received through the objective lens, A barcode reader to do.