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Rewritable thermal label of non-contact type

A non-contact, heat-sensitive technology, applied in the direction of copying/marking method, identification device, temperature recording method, etc., can solve the problems of poor adhesion, inability to print, etc., and achieve the effect of excellent rewriting durability

Inactive Publication Date: 2008-08-13
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this structure are: since the laser is directly applied to the rewritable layer, when recording and erasing are repeated many times, the heat of the repeatedly applied laser damages the surface of the recording medium; In addition to information, when it is necessary to print fixed information and various color signs according to some printing methods, it cannot be printed because the printing ink cannot firmly adhere to the heat-sensitive recording layer (poor adhesion)

Method used

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  • Rewritable thermal label of non-contact type
  • Rewritable thermal label of non-contact type

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0125] Preparation Example 1 Preparation of a Coating Solution (Liquid A) for Forming a Thermosensitive Color-developing Layer

[0126] 10 parts by mass of 3-(4-diethylamino-2-ethoxyphenyl)-3-(1-ethyl-2-methylindol-3-yl)-4-nitrogen Heterophthalide, which is a triarylmethane compound, 30 parts by mass of 4-(N-methyl-N-octadecylsulfonylamino)phenol as a reversible developer, 1.5 parts by mass of a dispersant Polyvinyl acetal and 2500 parts by mass of tetrahydrofuran as a diluting solvent are ground into powder with a crusher and a disperser (disper) and dispersed to make a coating liquid (liquid A) for forming a heat-sensitive color display layer .

preparation example 2

[0127] Preparation Example 2 Preparation of Coating Liquid (Liquid B) for Forming Light Absorption and Heat Conversion Layer

[0128] 1 part by mass of a near-infrared light absorbing and converting agent (nickel complex colorant) [manufactured by TOSCO Co., Ltd., trade name: "SDA-5131"], 100 parts by mass of an ultraviolet-curable adhesive (urethane acrylate ) [manufactured by DAINICHI SEIKA Color & Chemicals Mfg Co., Ltd., trade name: "PU-5(NS)"] and 3 parts by mass of an inorganic pigment (silica) [manufactured by NIPPON AEROSIL Co., Ltd., trade name: "AEROSIL R-972" ] dispersed by a disperser to prepare a coating liquid (liquid B) for forming a light-absorbing and heat-converting layer.

preparation example 3

[0129] Preparation Example 3 Preparation of Adhesive Layer with Release Sheet

[0130] A polyethylene terephthalate (PET) film [manufactured by TORAY INDUSTRIES, INC "Lumirror T-60"] with a thickness of 100 μm was used containing a catalyst [manufactured by Dow Corning Toray Co., Ltd., trade name: "SRX-211" ] Silicone resin coating to form a coating layer with a thickness of 0.7 μm after drying to make a release sheet. The silicone resin layer on the prepared release sheet was prepared by adding 3 parts by mass of a crosslinking agent to 100 parts by mass of an acrylic pressure-sensitive adhesive [manufactured by TOYO INK MFG Co., Ltd., trade name: "ORIBAINBPS-1109"]. [manufactured by NIPPON POLYURETHANE INDUSTRY CO., LTD., trade name: "CORONATE L"] prepared pressure-sensitive adhesive coating liquid, coated according to the method using a roller coater to form a coating layer having a thickness of 30 μm after drying . The film obtained by applying the pressure-sensitive adh...

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Abstract

A rewritable thermal label of the non-contact type which comprises a transparent substrate, a rewritable thermal layer disposed on the transparent substrate and an adhesive layer disposed on the rewritable thermal layer and enables to rewrite visible information with laser light in the non-contact manner. The label exhibits improved durability in rewriting (resistance to destruction with heat) and improved property for printing while the property for repeated recording and erasure with laser light is maintained and enables to write and / or erase visible information with laser light in the non-contact manner automatically without human labor.

Description

technical field [0001] The present invention relates to a non-contact rewritable thermal label. In particular, the present invention relates to a non-contact type rewritable thermal label exhibiting excellent rewritable durability (resistance to heat damage) and excellent printing while maintaining the characteristics of repeated recording and erasing with laser light characteristics, and enables the automatic writing and / or erasing of visual information with a laser in a non-contact manner without manpower. Background technique [0002] In labels for logistics management, contact-type thermosensitive recording materials are mainly used as surface substrates. Information such as address, sender’s name, item’s name, item’s quantity and weight, production date, best consumption period (best-before), special identification code and batch number or barcode indicating the information is obtained by using contact heat sensitive printing press, and the resulting label is adhered ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/40B41M5/46G09F3/02
CPCB41M2205/04B41M5/44B41M2205/40B41M5/3335B41M5/323B41M2205/38B41M5/305B41M5/41B41M5/3372
Inventor 饭野智谕西川健彦歌川哲之
Owner LINTEC CORP
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