JPS5813390Y2 - optical information code label - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of an optical information code label printed with a code such as a bar code or a dot code.The present invention relates to an improvement of an optical information code label on which a code such as a bar code or a dot code is printed. To provide an optical information code label that does not hide information and prevents optical reading of the code label from being affected by misreading due to characters etc. on an object to which it is attached.

Generally, optical information code labels are widely used in the logistics and financial fields, and are printed with coded information on a sheet of paper or plastic.

Optical information codes include bar codes, dot codes, etc. depending on the optical display method of information.

An information code label printed on the label, consisting of a series of low-reflectance areas and other high-reflectance areas, is scanned by a light beam from a light source with a constant amount of light, and the difference in reflectance of the reflected light is measured optically. is detected and read.

Optical information codes are usually used on documents, articles or their packaging.
There are cases where the label is printed in advance on an attached object such as a package or bag, where it is printed on an existing attached object, and where a code label having an optical information code is affixed.

The present invention is an attempt to solve the problem of soil removal when code labels are affixed to objects during distribution.

Generally, when a code label is attached, information such as patterns, figures, or characters on the object to be attached is often hidden by the attachment of the code label.

Figure 1 shows a conventional optical information code label, and the label mount 1 has a white light diffusing property so that when this label is attached, it is not affected by the optical density of the surface of the object to which it is attached. The thickness and light diffusivity of the patterns, figures, characters, etc. on the patch are selected so that they cannot be detected not only by an optical reader but also by the naked eye.

An optical information code 2 is printed on the mount 1.

A rewetting or pressure-sensitive adhesive 3 is applied to the back side of the mount 1, and the mount 1 is adhered to an object.

However, when attaching such a code label to an article, since the mount 1 of the code label is made of an opaque material, other information on the surface of the article, such as the address, address, etc., may be hidden by the code label. .

On the other hand, if the mount 1 of the code label is made of a transparent material, it will not hide other information such as mail, but when reading, the characters under the code label will be detected at all times, resulting in misreading. Cause.

Therefore, the present invention provides a code label with spectral wavelength characteristics that is semi-transparent to the human eye but non-transparent to the reading machine. To provide an optical information code label that does not hide information from the human eye, but allows only necessary code information to be input to a machine.

The code label of the present invention has the spectral transmission characteristics of the conventional optical information code label label mount to at least a part of the light spectrum corresponding to the visibility characteristics of the human eye, and the spectral sensitivity of the optical reader. By selecting non-transparent characteristics, human eyes can read the necessary information such as letters on the object to be applied, but the information on the object to be applied is not detected by the optical reader. It is composed of

An embodiment of the present invention will be described below.

FIG. 2 is a perspective view of a code label according to an embodiment of the present invention.

In this embodiment, it is assumed that the optical reading device is a helium/neon laser scanning type reading device or a reading device using a gallium/phosphorus light emitting diode light source.

These are each sensitive to about 6,330 or 9,000 reading light spectra, ie red light or near-infrared light, respectively.

In this embodiment, the label mount 4 is made of blue or blue-green transparent paper or semi-transparent paper, and the optical information code 5 is printed on the label mount 4 using ink containing a white pigment.

By configuring the label in accordance with the reading light spectrum of the optical reader, information such as characters on the object to be affixed can be read by the human eye through the blue or blue-green label mount, while the label Since the spectral transmission characteristics of the mount do not match the reading light spectrum, information such as characters on the object under the mount cannot be detected by the optical reading device.

In addition, in this example, the optical information code is formed using ink containing white pigment, so its spectral reflectance ranges from the entire range of the recalibration light to near-infrared light, and the part that overlaps with the read light spectrum of the optical reading device. Because of this, it can be detected.

In addition, in this embodiment, the optical information code is not limited to white pigment, but ink that matches the reading light spectrum of the optical reading device or includes the reading light spectrum as its spectral reflectance, such as red pigment, is used. You may use the ink containing.

FIG. 3 shows another embodiment of the present invention.

This embodiment differs from the first embodiment in that a code with low reflectance is formed on the surface of the label with high reflectance with respect to the reading light spectrum.

That is, in the above-mentioned embodiment, a high reflectance code is formed on the surface of a low reflectance label, and the contrast polarity of the background and the code are opposite to that of the present embodiment, so that there is a so-called black-and-white negative-positive relationship.

That is, this embodiment has the feature that low reflectance ink, which is conventionally used for optical information codes, can be used.

In FIG. 3, the label mount 7 is a white layer that is translucent and has a limited light diffusing property, or a layer of a hue that includes the reading light spectrum in its spectral reflectance. A film 6 having hues whose spectral transmittance wavelength ranges do not match is coated or laminated.

An adhesive 3 is provided on the back side of the membrane 6.

On the other hand, the optical information code 2 is formed on the surface of the mount 7 using conventionally used low reflectance ink such as black ink.

With the label configured in relation to the reading light spectrum in this way, information such as letters under the label can be seen by the human eye through the membrane 6 and the single-light diffusive mount 7, but the reading light is transmitted through the membrane. 6, information such as letters on the object to be affixed under the label cannot be detected.

In this embodiment as well, the reading light spectrum of the optical reading device and the spectral transmission spectrum of the film 6 can be freely selected as long as the above-mentioned conditions are satisfied. gallium·
When a phosphorescent light emitting diode is used, the hue of the film 6 can be blue or blue-green.

On the other hand, when an image pickup tube with a panchromatic photoconductor, an image pickup tube with a silicon sensor array, or a self-scanning silicon sensor array is used as a reading device, the spectral transmittance of the selected hue is used as the film 6. A filter having a spectral transmittance in a low spectral transmission range For example, when the film 6 is made of blue or blue-green, a red filter can be applied to the light detection section of the optical reader to block information such as characters under the label. can.

As described in detail above, according to the present invention, patterns and figures under the label, which were unavoidable with conventional code labels of this type,
The problem of hiding text and other information can be removed,
In addition, the information under these labels is not detected by the optical reading device, and there is no possibility that the information cannot be read due to the influence of such information.

In addition, in order to avoid concealing the information on the surface of the object to be affixed using conventional methods, labeling involves detecting the location of the information on the surface of the object by visual inspection or other detection means, and searching for a position that will not hide the information. It was necessary to paste it.

Therefore, continuous high-speed labeling at fixed positions using an automatic labeling machine or the like is often not possible.

On the other hand, according to the present invention, it is possible to affix a label to a prescribed position regardless of the information on the surface of the object to be affixed, and the work efficiency related to affixing can be dramatically improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional optical information code label, and FIGS. 2 and 3 are perspective views of an optical information code label according to an embodiment of the present invention. 4.7... Mount, 2.5... Code.

Claims (2)

[Scope of utility model registration request] (1) Coded optical information is printed or printed on a mount, and the mount is transparent in a part of the wavelength range including visible light, and is opaque to the reading light for reading the information. ° Optical information code label characterized by: (2) Scope of Utility Model Registration Claim No. (1) in which optical information is printed or printed with dye, application fee, or paint that has a spectral reflectance spectrum in the spectral spectral wavelength range of the light that reads optical information
Optical information code label as described in section.