CN111105701A

CN111105701A - Printed bar code label and printing system

Info

Publication number: CN111105701A
Application number: CN202010077602.2A
Authority: CN
Inventors: 张平娟
Original assignee: Beijing Yizhilian Technology Co ltd
Current assignee: Beijing Yizhilian Technology Co ltd
Priority date: 2020-01-31
Filing date: 2020-01-31
Publication date: 2020-05-05

Abstract

A printed barcode label and printing system, the printed barcode label comprising: pasting a base layer; the first color development layer is provided with a first color of the bar code label; the second color development layer can display a second color of the label bar code; the protective film layer is positioned above the second color development layer and used for protecting the second color development layer; the second display layer includes a first ink component and a second ink component, the first ink component being a constant color ink, the second ink component being a thermochromic ink. The printing system comprises a label conveying part, a printing part and a printing part, wherein the label conveying part is used for conveying a label to be printed to a printing area; a heating section for heating a label to be printed to exceed a temperature threshold; and the laser light source is arranged in the printing area and used for emitting and irradiating the heated label according to a pattern to be printed to form a printed bar code label with a printed pattern.

Description

Printed bar code label and printing system

Technical Field

The invention relates to a bar code printing label and a printing system of the bar code printing label.

Background

The labels include self-adhesive labels, i.e. coating labels and bills, and recently, in-mold labels, radio frequency labels and the like are also appeared. The application field of the composite material relates to a plurality of industries such as daily necessities, medicines, beverages, sports goods, road traffic, aviation and the like. Since the tag plays an indispensable role in the circulation of goods, moreover, the application field thereof is still continuously expanding.

The bar code label is generally marked by printing a bar code and other patterns or characters on the packaging paper or the product, or sticking a label printed with the bar code and other patterns or characters on the packaging paper or the product. Conventional printing methods include: typographic printing, which uses an embossed, intaglio or lithographic printing plate to transfer ink onto an image-bearing medium; thermal transfer printing, in which an ink ribbon and a thermal transfer printer are used to perform thermal transfer printing to form a printing pattern; inkjet printing, printing an image by ejecting liquid ink through fine nozzles.

The laser color printing method forms a print pattern by forming an indication area in a label area, which generates heat and decomposes when it absorbs laser light when irradiated with the laser light, to a color corresponding to the color of a base paper on which the label is produced. In the technical scheme of the method, the indication area needs to be capable of absorbing laser heat for decomposition, silver ink with aluminum particles needs to be used, and therefore printed labels are all silver. In order to solve the above problems, CN104379357A in the prior art discloses a label for bar codes, characters, and images, wherein a color ink layer is disposed above a burn-out indicating area, so that printed patterns having different colors can be realized. However, since the color ink layer is disposed above the burn-out indication area, it may partially block the laser from irradiating the burn-out indication area, which may result in incomplete thermal decomposition or incomplete decomposition of the burn-out indication area, thereby failing to generate the pattern of the base layer.

Disclosure of Invention

The present invention provides, as an improvement of CN104379357A, a printed barcode label and a printing system, which can prevent the thermal decomposition of the burn-out indication area from being affected by the color ink layer.

As one aspect of the present invention, there is provided a printed barcode label comprising: the sticking base layer is positioned at the bottom of the label; the first color development layer is positioned above the pasting base layer and has a first color of the bar code label; a burn-out layer which is burned out when irradiated by laser and displays the color of the first color development layer positioned below; a transparent foil layer located over the ignition loss layer for protecting the ignition loss layer; the second color development layer is positioned above the transparent slice layer and can display a second color of the label bar code; the protective film layer is positioned above the second color development layer and used for protecting the second color development layer; the second display layer comprises a first ink component and a second ink component, the first ink component is a light yellow constant color ink, the second ink component is a thermochromic ink which is a second color at room temperature and becomes transparent above a temperature threshold; the laser wavelength used to irradiate the ignition loss layer is greater than 500 nm.

Preferably, the adhesive substrate has an adhesive property to adhere the label to a surface of a product or package.

Preferably, the thermochromic ink is a reversible color-changing ink prepared by microencapsulating a thermochromic material.

Preferably, the temperature threshold is 60 to 100 degrees.

Preferably, the ignition loss layer is deposited aluminum or silver ink.

Preferably, the first color is red or green.

Preferably, the first color is black.

Preferably, the printed barcode label is heated to a temperature exceeding a temperature threshold before printing, and then the printed barcode label having the printed pattern is formed by laser irradiation of the burn-out layer.

Preferably, the adhesive further comprises a first color development layer protection film layer positioned between the first color development layer and the adhesive base layer.

As another aspect of the present invention, there is provided a printing system for printing the barcode label, including: a label transfer unit for transferring a label to be printed to a printing area; a heating section for heating a label to be printed to exceed a temperature threshold value so that the second display layer is yellowish when irradiated with laser light; and the laser light source is arranged in the printing area and used for emitting laser for irradiating the burning loss layer of the heated label according to the pattern to be printed so as to burn out the irradiated part of the burning loss layer and form the printed bar code label with the printed pattern.

Preferably, the heating unit is disposed below the label conveying unit

Preferably, the heating part is provided below the printing area.

Preferably, the laser has a wavelength of more than 500 nm.

Drawings

Fig. 1 is a schematic structural diagram of a printed barcode label according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. Moreover, it is to be understood that the features of the various embodiments described herein are not mutually exclusive and can exist in a wide variety of combinations and permutations.

The printed barcode label of the embodiment of the present invention, referring to fig. 1, includes a sticker substrate 10, a first color development layer protection film layer 20, a first color development layer 30, a burn-out layer 40, a transparent sheet layer 50, a second color development layer 60, and a protection film layer 70.

The base layer 10 is located on the bottom of the label and has an adhesive property to attach the label to a product or packaging surface. The first color layer protecting film layer 20 is disposed above the sticker base layer 10 for protecting the first color layer 30, so that the first color layer 30 is not damaged when the label is torn off from the product or package.

The first color development layer 30 is located above the adhesive base layer and has a first color of the barcode label, and the barcode label printed by laser irradiation may show the color of the first color development layer 30 by laser irradiation, and the color may be black or other colors, such as red or green. The first color-developing layer may also comprise a mixture of colors.

The burning loss layer 40 is located above the first color developing layer 30, and is burned out when irradiated by laser light, thereby displaying the color of the first color developing layer 30 located below. The ignition loss layer 40 may be a deposited aluminum or silver ink, wherein the silver ink may use a polyamide resin as a carrier and an aluminum-particle-containing leafing aluminum paste as a pigment.

A transparent foil layer 50, which is positioned above the ignition loss layer 40, for protecting the ignition loss layer 40, a plastic film may be used as a material of the transparent foil layer 50. And a second color development layer 60, which is located above the transparent sheet layer 50, capable of displaying a second color of the label barcode. The second color developing layer 60 includes a first ink component and a second ink component. The combined color of the first ink component and the second ink component is a pale color. The first ink component is a pale yellow, constant color ink that does not change color upon a change in temperature. The second ink component is a thermochromic ink that is a second color at room temperature and becomes transparent above a temperature threshold. Wherein the thermochromic ink is reversible color-changing ink and is prepared by microencapsulating a thermosensitive color-changing material, and the temperature threshold of the reversible color-changing ink can be set to be between 60 and 100 degrees. Before printing, the temperature of the printing bar code label is heated to exceed the temperature threshold value, so that the second color development layer 60 is only light yellow and only absorbs blue-violet light with the wavelength below 500nm, the burning loss layer 40 is irradiated by laser with the wavelength more than 500nm without being blocked by the second color development layer, the burning loss layer 40 is thermally decomposed, the color of the first color development layer below the burning loss layer 40 is exposed, and the printing bar code label with printing patterns is formed.

A first color developing layer protecting film layer 70 located above the second color developing layer 60 for protecting the patterns on the second color developing layer 60 from fading or being erased. The first color-developing layer protective film layer 70 and the transparent sheet layer 50 may be prepared using the same material.

The printing system for printing the bar code label of the embodiment of the invention comprises: a label transfer unit for transferring a label to be printed to a printing area; a heating section for heating a label to be printed to exceed a temperature threshold value so that the second display layer is yellowish when irradiated with laser light; and the laser light source is arranged in the printing area, emits laser with the wavelength larger than 500nm, and is used for emitting laser for irradiating the burn-out layer of the heated label according to the pattern to be printed so as to burn out the irradiated part of the burn-out layer and form the printed bar code label with the printed pattern. The heating section may be provided below the label conveying section or the printing section, and heats the label to be printed using, for example, electrical heating.

All documents referred to herein are incorporated by reference into this application as if each were individually incorporated by reference. The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The particular features, structures, materials, or characteristics described in this disclosure may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. A printed barcode label comprising: the sticking base layer is positioned at the bottom of the label; the first color development layer is positioned above the pasting base layer and has a first color of the bar code label; a burn-out layer which is burned out when irradiated by laser and displays the color of the first color development layer positioned below; a transparent foil layer located over the ignition loss layer for protecting the ignition loss layer; the second color development layer is positioned above the transparent slice layer and can display a second color of the label bar code; the protective film layer is positioned above the second color development layer and used for protecting the second color development layer; the method is characterized in that: the second display layer comprises a first ink component and a second ink component, the first ink component is a light yellow constant color ink, the second ink component is a thermochromic ink which is a second color at room temperature and becomes transparent above a temperature threshold; the laser wavelength used to irradiate the ignition loss layer is greater than 500 nm.

2. The printed barcode label of claim 1, wherein: the adhesive base layer has an adhesive property to adhere the label to a product or a packaging surface.

3. The printed barcode label of claim 1, wherein: the thermochromic ink is reversible color-changing ink and is prepared by microencapsulating a thermosensitive color-changing material.

4. The printed barcode label of claim 1, wherein: the temperature threshold is 60 to 100 degrees.

5. The printed barcode label of claim 1, wherein: the ignition loss layer is deposited aluminum or silver ink.

6. The printed barcode label of claim 1, wherein: the adhesive base layer is characterized by also comprising a first color development layer protective film layer which is positioned between the first color development layer and the adhesive base layer.

7. A printing system for printing a barcode label of one of the preceding claims, comprising: a label transfer part for transferring a label to be printed to a printing area; a heating section for heating a label to be printed to exceed a temperature threshold; and the laser light source is arranged in the printing area and used for emitting laser for irradiating the burning loss layer of the heated label according to the pattern to be printed so as to burn out the irradiated part of the burning loss layer and form the printed bar code label with the printed pattern.

8. The printing system according to claim 7, wherein the heating portion is provided below the label conveying portion.

9. The printing system according to claim 7, the heating portion being disposed below the printing section.

10. The printing system of claim 7, wherein: the wavelength of the laser is more than 500 nm.