JPH08254951A - Information display label - Google Patents

Abstract

PURPOSE: To allow viewing of the character information formed on an adherend surface and optical reading of an information display part even if an information display label is affixed onto the character information of printed matter, etc. CONSTITUTION: This information display label 1 is formed by printing its front surface with the information display part 6 for bar codes, etc., readable by an optical reader and has an optical reflection layer 5 which allows the transmission of visible light in a range to allow the visual discrimination of the character information on the adherend surface and has high reflectivity to the light of the prescribed wavelength readable by the optical reader. The light cast from the optical reader is mostly reflected by the optical reflection layer 5 and the influence of the character information of the adherend surface is eliminated to the utmost. The contrast of the printing part for printed bars, etc., constituting the bar codes printed by black, etc., to absorb light and the texture surface is sufficiently assured even if there is the character information on the adherend surface. The erroneous reading or illegibility of the information reading from the optical reader does not arise any more; in addition, the visual reading of the character information on the adherend surface is possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information display label formed by printing an information display section readable by an optical reader such as a bar code.

[0002]

2. Description of the Related Art Information display labels of this kind are available from Shokai 63.
No. 888881, No. Sho 49-49878, etc., easily attached to a required surface, information such as a bar code is read by an optical reading device, and sales management, inventory management or destination of home delivery, etc. Used for management etc.

[0003]

When the information display label is attached to the surface of a printed matter or the like, it is attached directly on the character information formed on the surface to be attached, intentionally or unintentionally. I have something to do. In such a case, the character information is visually blocked by the label, making it difficult to read,
When the information display section on the information display label is read by the optical reading device, the character information on the adherend surface is also read, resulting in erroneous reading and the problem that accurate information cannot be read. An object of the present invention is to solve such a problem.

[0004]

According to the present invention, in an information display label formed by printing an information display portion readable by an optical reading device such as a bar code on the surface, visible light is visible when the character information on the adhered surface is visible. Is provided with an optical reflection layer that is highly reflective to light of a predetermined wavelength that is readable by the optical reader and that is readable by the optical reader, and the other layers are visually transparent. It is an information display label. Here, visually transparent means that the character information can be visually perceived by being transparent through the layer,
There are transparent and semi-transparent.

As a general construction of this information display label, a receiving layer is formed on the surface of a transparent resin base material layer having an adhesive layer for bonding on the adherend surface formed on the lower surface, and the receiving layer is further formed. It has been proposed to print an information display section readable by an optical reader such as a bar code on the layer, and in this structure, the receiving layer can be an optical reflection layer.

Further, the optical reflection layer transmits visible light within a range where the character information on the surface to be adhered can be visually discriminated, and has high reflectivity for light of a predetermined wavelength which can be read by the optical reading device. In order to achieve the above, the reflectance may be set to 15 to 60% when the black letters formed on the adhered surface are irradiated with light of a predetermined wavelength that can be read by the optical reading device. Here, the reflectance is shown with reference to the black character formed on the adhered surface, and it does not mean that the color actually formed on the adhered surface is limited to black.

The optical reflection layer is formed by mixing a predetermined amount of a white colorant in a resin base material, and adjusting the content of the white colorant so that the reflectance becomes 15 to 60%. May be.

Furthermore, the optical reflection layer may be composed of an air layer.

[0009]

When the information display label is directly attached to the print information printed on the adherend such as a printed matter, the print information is covered with the information display label.

By the way, as described above, the optical reflection layer of the information display label transmits visible light (400 to 700 nm) within a range where the character information on the adherend is visually discernible. There is no hindrance to the visual reading of information.

On the other hand, the optical reflection layer has low transparency to light of a predetermined wavelength that can be read by an optical reader,
Therefore, most of the light emitted from the optical reading device is reflected by the optical reflection layer, and the influence of the character information on the adherend is removed as much as possible. Therefore, even if there is character information on the adherend surface, it is possible to sufficiently secure the contrast between the printing surface such as a printing bar that constitutes a bar code printed in light absorbing black and the like and the surface of the cloth. The reading of information from the reading device can be carried out smoothly.

As the optical reflection layer, a layer formed by mixing a predetermined amount of a white colorant composed of a white pigment or a white dye with a resin base material is used. The amount of this mixture is determined by the wavelength of the light emitted from the optical reading device. The visible light is transmitted through the optical reflection layer in a range where the character information on the adherend is visually discernible, and the optical reading is performed. In order to have high reflectivity for light of a predetermined wavelength that can be read by a device, reflection when light of a predetermined wavelength that can be read by an optical reader is irradiated toward the black letters formed on the adherend. The rate is preferably in the range of 15-60%. When the reflectance is lower than 15%, the character information on the adherend is easily read by the optical reading device, and when the reflectance is higher than 60%, the character information on the adherend is visually difficult to read. Because.

Further, when the optical reflection layer is composed of an air layer, a large refraction occurs at the interface due to the refractive index of the adjacent solid layer and air layer, and the light is irradiated from the optical reading device having a small incident angle. For light, total reflection occurs at the interface, making it less likely to be affected by the lower layer, and when viewing from directly above, the reflected light from the adherend can be viewed and the text information can be read. It will be possible.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an information display label 1 according to the present invention. An adhesive layer 3 is formed on the lower surface of the transparent resin substrate layer 2 of the information display label 1, and a release paper 4 is bonded to the adhesive layer 3. Further, a receiving layer (optical reflection layer) 5 is formed on the upper surface of the transparent resin substrate layer 2, and an information display portion 6 readable by an optical reading device composed of a bar code is formed on the optical reflection layer 5 by thermal, It is printed by means such as inkjet. When the information display section 6 is printed, the optical reflection layer 5 carries a printing layer such as a barcode to prevent the information display section 6 from coming off.

In such a structure, the optical reflection layer 5 is formed by mixing a polyester resin with a white pigment (product name: CVL-PTN709 white) and silica as a white colorant, which is used as the optical reflection layer. The thickness of the transparent resin base material layer 2 is 50 μm.

As shown in FIGS. 2 and 3, the information display label 1 having this structure is on a mount 10 such as a form, a delivery slip, a product bag, and a home delivery, and the character information is written on the mount 10. After the release paper 4 is removed with the attachment surface as the adherend surface, it is attached to the attachment surface. Then, the information display section 6 is read by the optical reading device and used for delivery sorting, inventory management, sales management and the like.

When the information surface label 1 is intentionally or unintentionally attached to the character information 11 when the character information 11 previously printed or written by hand is present on the adherend surface of the mount 10. There is. In this case, if the information display label 1 is transparent, the character information 11 is read by the optical reading device, and the information display unit 6 becomes unreadable or misread.

However, a white coloring material is mixed in the optical reflection layer 5, and therefore, as shown in FIG.
The light x emitted from the optical reading device is scattered and reflected by the white particles of the optical reflection layer 5, and the transmittance of the light having a predetermined wavelength that can be read by the optical reading device becomes low. Therefore, even if there is character information 11 on the adhered surface, the influence of the character information on the adhered surface is eliminated as much as possible without reducing the light amount of the reflected light on the cloth surface, and black or the like that absorbs light is used. A sufficient contrast can be ensured between the printing surface such as a print bar that constitutes the printed barcode and the surface of the cloth, and information can be read from the optical reading device without any trouble. On the other hand, as shown in FIG. 3, the optical reflection layer 5 transmits the visible light y within a range in which the character information 11 can be visually discriminated, so that there is no obstacle to the visual reading of the character information.

As a result of measuring the reflectance while changing the mixing amount of the white coloring material, the results are as shown in FIGS. Here, as shown in FIG. 6, indicates the reflectance when light is applied to a portion without the character information 11 at a position where the information display portion 6 is absent. The reflectance when the light is irradiated to the portion where the formed black character information 11 is present is shown, and further the reflectance when the black information display portion 6 is irradiated with the light is shown.

It is to be understood that the more significant the difference in the reflectance is, the clearer the difference between the portion where the character information 11 exists and the portion where the character information 11 does not exist, and the contrast makes the character information 11 easier to see. You can Further, when the difference in reflectance between and is large, the light amount difference between the information display portion 6 and the character information 11 becomes clear, and the character information 11 to the optical reading device is
The effect of can be interpreted as less.

Here, the sample H is a transparent material in which the white colorant is not mixed with the optical reflection layer 5, and corresponds to the conventional structure. Sample A has a polyester resin 100 as the optical reflection layer 5.
White coloring material (part name; CVL-PTN70) relative to parts by weight
9 white (manufactured by Dainippon Ink & Co., Inc.) 70 parts by weight is shown. Sample B also shows a mixture of 44 parts by weight of a white colorant. Sample C is 28 parts by weight of white colorant, Sample D is 25 parts by weight of white colorant, Sample E is 22 parts by weight of white colorant, Sample F is 12.5 parts by weight of white colorant, Sample G is white colorant. 6 parts by weight are shown respectively. In addition, all the samples contained 4 parts by weight of silica (Sylysia # 446; manufactured by Sylysia Chemical).

The relationship between the reading wavelength and the reflectance in Samples A to H is as shown in FIGS. The values of reflectance at the reading wavelength of 630 nm are shown in FIG. The reflectance value at the reading wavelength of 530 nm is shown in FIG. Here, the reading wavelength is 630 nm and the reading wavelength is 530 n
The reflectivity of m is shown because such a wavelength is a typical read wavelength in an optical reader.

Here, visually, the reflectance of the sample A is 63%, which is considerably whitish.
1 causes difficulty in visual inspection. The difference between Samples G and H was small, and the character information 11 was read by the optical reading device, and the information display unit 6 was unreadable or erroneously read. On the other hand, in the sample B, the text information 11 can be read somehow, and this reflectance is considered to be the limit value. Furthermore, the sample D having a reflectance of 35% was easy to read. In the sample F, the information display section 6 can be read.

Viewed in this way, the reflectance at 15 is
It can be said that in the range of up to 60%, the character information 11 can be visually observed and the information display unit 6 can be optically read. Furthermore, the character information 11 can be read and the information display section 6 can be easily viewed. A preferable range is a reflectance of 15 to
It is understood to be in the range of 35%.

15 and 16 show the optical reflection layer as the air layer 2.
1 shows an information display label 20 constituted by 1. Explaining the structure of the information display label 20, the adhesive layer 25 is formed only on the periphery of the lower surface of the transparent resin base material layer 22 having the information display portion 24 such as a barcode formed on the upper surface with the receiving layer 23. Then, a release paper (not shown) is joined. In such a configuration, when the release paper is removed from the surface of the mount 10 on which the character information 11 is written and then the adhesive surface is adhered, the adhesive layer 25 forms the lower surface of the transparent resin base layer 22. Since it is formed only on the peripheral edge, as shown in FIG.
The air inside is enclosed by the air layer 21
Is generated.

When the air layer 21 is formed in this way, a large refractive index is generated at the interface due to the difference in the refractive index between the transparent resin base material layer 22 on the upper side and the air layer 21, and the incident angle becomes as shown in FIG. Light emitted from a shallow optical reader undergoes total internal reflection at the interface, making it less susceptible to the effects of the lower layer. On the other hand, when viewed from directly above, the reflected light from the adherend can be viewed as shown in FIG. 15, and the character information can be read. Therefore, the information display unit 24 is read by the optical reading device, the influence of the character information 11 is blocked by the air layer 21, and the character information 11 can be confirmed without any trouble when visually observed.

[0027]

As described above, according to the present invention, in an information display label formed by printing an information display portion readable by an optical reading device such as a bar code on the surface, visible light is used as the character information on the surface to be adhered. It is transparent in a visually discernible range,
In addition, since the optical reading layer is provided with an optical reflection layer having high reflectivity for light having a predetermined wavelength, most of the light emitted from the optical reading device is reflected by the optical reflection layer and the adherend surface Even if there is character information on the adherend surface by removing the influence of the character information as much as possible, the printing part such as the printing bar that constitutes the bar code printed in black that absorbs light It is possible to secure a sufficient contrast with the above, and it is possible to visually read the character information on the adhered surface without causing erroneous reading or unreadable reading of information from the optical reading device. Therefore, when an information display label is affixed to the required surface on which textual information is printed or written and it is used for sales management, inventory management or destination management of home delivery etc. by information such as barcode, the reliability of the information management It is possible to improve various properties, and it is possible to bring various effects such that the sticking surface can be easily secured and it is not necessary to use nerves for the sticking state because it is not necessary to stick the sticker while avoiding the character information. Become.

[Brief description of drawings]

FIG. 1 is a perspective view of an information display label 1 according to the present invention.

FIG. 2 is a vertical cross-sectional side view of an attached state of the information display label 1 showing the action of the optical reflection layer 5 with respect to the light x having a predetermined wavelength that can be read by the optical reading device.

FIG. 3 is a vertical cross-sectional side view of an attached state of the information display label 1 showing the action of the optical reflection layer 5 with respect to visible light y.

FIG. 4 is a table of measurement results showing reflectance for light having a reading wavelength of 630 nm.

FIG. 5 is a table of measurement results showing reflectance with respect to light having a reading wavelength of 530 nm.

FIG. 6 is a vertical cross-sectional side view showing a relationship between light emission positions.

FIG. 7 is a graph showing the relationship between the wavelength and reflectance of sample A.

FIG. 8 is a graph showing the relationship between the wavelength and reflectance of sample B.

FIG. 9 is a graph showing the relationship between the wavelength and reflectance of sample C.

FIG. 10 is a graph showing the relationship between the wavelength and reflectance of sample D.

FIG. 11 is a graph showing the relationship between the wavelength and reflectance of sample E.

FIG. 12 is a graph showing the relationship between the wavelength and reflectance of sample F.

FIG. 13 is a graph showing the relationship between the wavelength and reflectance of sample G.

FIG. 14 is a graph showing the relationship between the wavelength and reflectance of sample H.

FIG. 15 is a vertical cross-sectional side view of an attached state of the information display label 20 showing the action of the air layer 21 on visible light.

FIG. 16 is a vertical cross-sectional side view of an attached state of the information display label 20 showing the action of the air layer 21 with respect to light having a predetermined wavelength that can be read by the optical reading device.

[Explanation of symbols]

 1 Information Display Label 2 Transparent Resin Base Layer 4 Release Paper 5 Optical Reflection Layer 6 Information Display Section 10 Mount 11 Text Information 20 Information Display Label 21 Air Layer 22 Transparent Resin Base Layer 24 Information Display Section 25 Adhesive Layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shohei Onogi Shohei Onoki 115 Kitatakane, Ogakie-cho, Kariya city, Aichi Kobayashi Recording Paper Co., Ltd. (72) Inventor Hiroaki Shinohara 21, Saiinzuka, Saiin, Kyoto, Japan In the label (72) Toshiyuki Tamura 6-78 Minami-machi, Mishima-shi, Shizuoka Tech Tech Research Institute Co., Ltd. (72) Takayuki Hiyoshi 6-78 Minami-machi, Mishima-shi, Shizuoka Tech Tech Research Institute (72) Inventor Ishii Eiwa, 570, Ohito, Ohito-cho, Takata-gun, Shizuoka Prefecture

Claims (5)

[Claims] 1. An information display label formed by printing an information display portion readable by an optical reader such as a bar code on the surface, transmits visible light within a range in which character information on an adherend can be visually discriminated. An information display label comprising an optical reflection layer having high reflectivity for light of a predetermined wavelength, which is readable by the optical reader, and the other layers being visually transparent. 2. A receiving layer is formed on the surface of a transparent resin substrate layer on the lower surface of which an adhesive layer for bonding to the adherend is formed, and an optical element such as a bar code is formed on the receiving layer. 2. An information display unit readable by a reading device is printed, and the receiving layer is an optical reflection layer.
Information label of the description. 3. The optical reflection layer is constructed so that the reflectance is 15 to 60% when the light having a predetermined wavelength that can be read by an optical reading device is irradiated toward the black character formed on the adhered surface. The information display label according to claim 1 or 2, wherein the information display label is formed. 4. The optical reflection layer is formed by mixing a predetermined amount of a white colorant with a resin base material, and the reflectance is adjusted to 15 to 60% by adjusting the content of the white colorant. The information display label according to claim 3, wherein the information display label is formed. 5. The information display label according to claim 1, wherein the optical reflection layer is an air layer.