CN204759917U - Forging is judged and is used label - Google Patents

Forging is judged and is used label Download PDF

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Publication number
CN204759917U
CN204759917U CN201420836054.7U CN201420836054U CN204759917U CN 204759917 U CN204759917 U CN 204759917U CN 201420836054 U CN201420836054 U CN 201420836054U CN 204759917 U CN204759917 U CN 204759917U
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CN
China
Prior art keywords
color development
temperature
label
dyestuff former
chromonic layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420836054.7U
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Chinese (zh)
Inventor
青山茂生
河野和彦
秦由美
石黑智一
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New Oji Paper Co Ltd
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Oji Paper Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/03—Forms or constructions of security seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/03—Forms or constructions of security seals
    • G09F3/0376—Forms or constructions of security seals using a special technique to detect tampering, e.g. by ultrasonic or optical means

Abstract

The utility model relates to a forging is judged and is used label. The utility model provides a paste seal the object thing after, does not peel off or destroy the label through the forging of differentiating label self, even once also do not seal the object thing, also can forge the forging is judged and is used label who judges easily. A forging is judged and is used label, on a face of supporter has contain first dyestuff former, with the temperature sensing color development layer of the second dyestuff former and the colouring agent of the tone color development different with first dyestuff former, has the adhesive phase at another of supporter on the face, wherein, first dyestuff former and both color developments of second dyestuff former and present the colour mixture when the thermal photography printing that utilizes the thermal head, appear when the forging is judged and utilize the different tone of tone in thermal photography when printing of thermal head.

Description

Forge judgement label
Technical field
The utility model relates to a kind of label, the color development when tone particularly relating to a kind of thermal photography printing and color development by utilizing thermal head judges from the forgery by this label and the different forgery judgement label of the tone presented.
Background technology
Be the state do not broken a seal to prove that object sealed by envelope, case etc., known stickup on the seal opening portion sealing object sealed label in the past.
Seal labeling requirement paste seal object after be not easy to be stripped, consider that requirement can easily judge once to be stripped from safety in addition.Like this, seal label to not re-use after peeling off completely and easily judge to be stripped, usually knownly sealing perforation, otch etc. on label.
In addition, seal in label described, in the past the label (such as patent documentation 1 and 2) of known use thermal photography.Like this seal label, after sealing object Kaifeng, due to seal label layer in and/or interlaminar failure, thus can not re-use and be easy to differentiation and seal.
But, seal for label for patent documentation 1 and 2, once also do not broken a seal if seal object, then cannot differentiate whether break a seal, and therefore, be difficult to realize sufficient security.
In addition, in recent years, seal sealing label, change after content on object peeling off to paste, pasting the label of sealing forged and forge so cleverly and become serious problem, just becoming more important for sealing label self to differentiate whether to be forged.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2006-76031 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2008-268380 publication
Utility model content
Utility model problem to be solved
Fundamental purpose of the present utility model is, there is provided a kind of after pasting and sealing object, not peeling off or destroying label by differentiating the forgery of label self, even if once also do not break a seal seal object, also can easily carry out forging the forgery judgement label judged.
For the means of dealing with problems
The present utility model is artificial to solve the problem, further investigate, found that: as forgery judgement label, making label forging color development when judging with the tone color development different from color development when utilizing the thermal photography of thermal head to print, easily can differentiate the true and false of this label.In addition, the present utility model people repeatedly studies and finds by containing the first dyestuff former and the second dyestuff former in the temperature-sensitive chromonic layer forming this label, according to above-mentioned different chromophoric method, the color development of different tone can be realized, finally complete the utility model.The utility model completes based on such discovery.
The false proof judgement label of scheme 1. 1 kinds, is characterized in that,
A face of supporter has temperature-sensitive chromonic layer, another face of supporter has adhesive phase,
The color development tone presented when thermal photography prints is different with the color development tone presented when forging and judge.
The forgery judgement label of scheme 2. as described in scheme 1,
A face of supporter having containing the first dyestuff former, color development is the second dyestuff former of the tone different from the first dyestuff former and the temperature-sensitive chromonic layer of developer;
Another face of supporter has adhesive phase;
It is characterized in that, the first dyestuff former and the second dyestuff former color development when utilizing the thermal photography of thermal head to print also present colour mixture, present when forging and judging from described utilize the thermal photography of thermal head to print time the different tone of tone.
The forgery judgement label of scheme 3. as described in scheme 1 or 2, it is characterized in that, temperature-sensitive chromonic layer is:
There is the first temperature-sensitive chromonic layer in the side near supporter, there is in the side away from supporter at least two-layer sandwich construction of the second temperature-sensitive chromonic layer, containing the first dyestuff former, the temperature-sensitive chromonic layer containing the second dyestuff former in the second temperature-sensitive chromonic layer in the first temperature-sensitive chromonic layer, and/or
Contain the first dyestuff former with the form of composite particles, contain the temperature-sensitive chromonic layer of the second dyestuff former with the form of solid dispersal particulate.
The forgery judgement label of scheme 4. according to any one of scheme 1 ~ 3, it is characterized in that, described temperature-sensitive chromonic layer is have the first temperature-sensitive chromonic layer in the side near supporter, have at least two-layer sandwich construction of the second temperature-sensitive chromonic layer in the side away from supporter, containing the first dyestuff former in the first temperature-sensitive chromonic layer, containing the second dyestuff former in the second temperature-sensitive chromonic layer.
The forgery judgement label of scheme 5. according to any one of scheme 1 ~ 4, it is characterized in that, described temperature-sensitive chromonic layer contains the first dyestuff former with the form of composite particles, contains the second dyestuff former with the form of solid dispersal particulate.
The forgery judgement label of scheme 6. as described in scheme 3 or 4, is characterized in that, the second dyestuff former in the first dyestuff former in described first temperature-sensitive chromonic layer and described second temperature-sensitive chromonic layer all contains with the form of solid dispersal particulate.
The forgery judgement label of scheme 7. as described in scheme 3,4 or 6, it is characterized in that, also the 3rd dyestuff former is contained with the form of composite particles in described second temperature-sensitive chromonic layer, present the color development of the colour mixture of the first dyestuff former, the second dyestuff former and the 3rd dyestuff former when utilizing the thermal photography of thermal head to print, when the color development by the label surface that nuzzles up or static color development time present from described utilize the thermal photography of thermal head to print time the different color development of color development.
The forgery judgement label of scheme 8. as described in scheme 3 or 5, is characterized in that, the form of the composite particles of described first dyestuff former is be selected from least one form in the group that is made up of following form,
(1) use hydrophobic resin as the form of wall film by the first dyestuff former microencapsulation;
(2) in the mother metal comprising the hydrophobic resin obtained by polyhydric isocyanate compound, be dispersed with the form of the first dyestuff former; And
The form that the polymkeric substance that the microparticle surfaces of (3) first dyestuff formers obtains by making the compound with unsaturated carbon bond be polymerized is coating.
The forgery judgement label of scheme 9. as described in scheme 7, is characterized in that, the form of the composite particles of described 3rd dyestuff former is be selected from least one form in the group that is made up of following form,
(1) use hydrophobic resin as the form of wall film by the 3rd dyestuff former microencapsulation;
(2) in the mother metal comprising the hydrophobic resin obtained by polyhydric isocyanate compound, be dispersed with the form of the 3rd dyestuff former; And
The form that the polymkeric substance that the microparticle surfaces of (3) the 3rd dyestuff formers obtains by making the compound with unsaturated carbon bond be polymerized is coating.
The forgery judgement label of scheme 10. according to any one of scheme 1 ~ 8, is characterized in that, the tone of different tones mainly the second dyestuff former color development.
The forgery judgement label of scheme 11. according to any one of scheme 1 ~ 10, is characterized in that, the tone of the color development of described colour mixture when utilizing the thermal photography of thermal head to print is black, and described label forges the tone of color development when judging as redness.
The forgery judgement label of scheme 12. according to any one of scheme 1 ~ 11, is characterized in that, described label forges color development when judging as by the color development of the label surface that nuzzles up or static color development.
The forgery judgement label of scheme 13. according to any one of scheme 1 ~ 12, it is characterized in that, describedly utilizing the thermal photography printing of thermal head to be undertaken by applying than the first dyestuff former and the higher temperature of the second dyestuff former static color development initial temperature separately.
The forgery judgement label of scheme 14. according to any one of scheme 1 ~ 13, it is characterized in that, the forgery for object judges.
The forgery judgement label of scheme 15. according to any one of scheme 1 ~ 14, it uses as sealing label.
Scheme 16. 1 kinds forges decision method, the forgery decision method of its forgery judgement label according to any one of operational version 1 ~ 15, it is characterized in that, forgery judgement label after implementing thermal photography printing by utilizing thermal head pastes on object, then make the label of stickup by nuzzling up color development or static color development, judge the forgery of label thus.
Utility model effect
Forgery judgement label of the present utility model can make the color development of forgery judgement label when forging judgement with the tone color development different from color development when utilizing the thermal photography of thermal head to print.Therefore, after being pasted by forgery judgement label of the present utility model and sealing object, not peeling off or destroying this label by differentiating the forgery of label self, even if once also do not break a seal seal object, also easily can carry out forgerys judgement.
Accompanying drawing explanation
Fig. 1 is the figure of the embodiment schematically showing forgery judgement label of the present utility model.
Fig. 2 is the figure of another embodiment schematically showing forgery judgement label of the present utility model.
Reference numeral
1 forges judgement label
2 adhesive phases
3 supporters
4 temperature-sensitive chromonic layer
4a first temperature-sensitive chromonic layer
4b second temperature-sensitive chromonic layer
Embodiment
Forgery judgement label of the present utility model has adhesive layer, supporter and temperature-sensitive chromonic layer, a face of support having containing the first dyestuff former, color development is the second dyestuff former of the tone different from the first dyestuff former and the temperature-sensitive chromonic layer of developer, has adhesive phase on the other surface.Utilize accompanying drawing that the structure of polychrome thermal recording medium of the present utility model is described below.
Fig. 1 is the figure of the embodiment schematically showing forgery judgement label of the present utility model.Forgery of the present utility model shown in Fig. 1 judge label 1 as have successively adhesive phase 2, supporter 3 from the side near adhesive phase 2 and temperature-sensitive chromonic layer 4, the sandwich construction with temperature-sensitive chromonic layer of at least three layers.
In addition, Fig. 2 is the figure of another embodiment schematically showing forgery judgement label of the present utility model.Forgery of the present utility model shown in Fig. 2 judge label 1 as have successively adhesive phase 2, supporter 3, first temperature-sensitive chromonic layer 4a from the side near adhesive phase 2 and the second temperature-sensitive chromonic layer 4b, the sandwich construction with temperature-sensitive chromonic layer of at least four layers.
In temperature-sensitive chromonic layer 4 in the forgery judgement label of the present utility model of Fig. 1, be the second dyestuff former and the developer of the tone different from the first dyestuff former containing the first dyestuff former, color development.
In addition, in the first temperature-sensitive chromonic layer 4a in the forgery judgement label of the present utility model of Fig. 2, containing the first dyestuff former and developer, in the second temperature-sensitive chromonic layer, contain the second dyestuff former and developer.
In addition, from the view point of sensitivity and storage stability, in the second heat sensitive recording layer 4b, the 3rd dyestuff former can be contained with the form of composite particles.
In addition, about each formation forming forgery judgement label of the present utility model, give the account in greater detail.
1. supporter
The kind, shape, size etc. of the supporter used in the utility model, as long as may be used for the supporter forging judgement label, be just not particularly limited.
Such as except Quality Paper Shang fine paper () (acidic paper, neutralized paper), recycled writing paper, glazed paper, intermediate paper (Zhong Quality Paper), except micro-painting paper, impregnated paper, synthetic paper, coated paper, art paper, cast-coated paper, neutral coated paper, clear coat paper, viscose paper, resin layered paper, polyolefins synthetic paper, synthetic fibre paper, nonwoven fabrics, synthetic resin film, metal (copper, aluminium etc.) paper tinsel etc., can also suitable various transparent supporting bodies of choice for use etc.
As the resin for above-mentioned supporter, polyethylene terephthalate (PET), nylon, cellulose diacetate, polystyrene, tygon, polypropylene, polyester, polyimide, Polyvinylchloride, polycarbonate etc. can be used.
These formed materials of supporters can be used alone or combine and stacked, use as composite sheet.For the thickness of supporter, about 0.005 ~ about 0.5mm is suitable.
2. bonding coat
As the bonding agent of the adhesive phase of formation label of the present utility model, in order to prevent the deliberate of label from pasting again, be used in the bonding agent of the especially permanent adhesive type that adhesive power is high in bonding agent.
As the material forming bonding agent, can enumerate such as: acrylic resin, acrylate resin or their multipolymer, Styrene-Butadiene, natural rubber, casein, gelatin, rosin ester, terpene resin, phenolics, styrene resin, coumarone-indene resin, polyvinylether, polyorganosiloxane resin etc., in addition, can illustrate: a-cyanoacrylate class, polysiloxane-based, maleimide, phenylethylene, polyolefins, resorcinol class, glymes, the various tackifier such as polysiloxane-based.
As bonding agent more specifically, can enumerate such as: " SaivinolAT-560 ", " SaivinolAT-14NT-5 ", " SaivinolSVP-100 " commercially available by サ イ デ Application (Saiden) KCC; By commercially available " NikasolTS-1063 ", " NikasolTS-1527 ", " NikasolL-122 " of Nippon Carbide Industries Co., Ltd, " NikasolL-145 "; " YJ-8655DB " commercially available by oiling バ ー デ ィ ッ シ ェ Co., Ltd. of Mitsubishi etc.
Utilizing the bonding coat of these materials can by above-mentioned resin material being dissolved or dispersed in water, solvent and obtain coating fluid, being used by this coating fluid the formation methods such as the reversion rolling method of woodburytype, silk screen print method, use intaglio plate to carry out being coated with, dry and formed.
Coating weight is in dry weight about 10g/m 2~ about 50g/m 2, preferred about 4g/m 2~ about 20g/m 2scope in regulate.
3. temperature-sensitive chromonic layer
Temperature-sensitive chromonic layer in label of the present utility model contains the first dyestuff former, the second dyestuff former of the tone different from the first dyestuff former color development and developer.
In the thermal recording medium forming described temperature-sensitive chromonic layer, operable developer, can contact with dyestuff former from the character and having with liquefaction or fusing because temperature rises and make to select the material of the character of its color development, representatively material, can enumerate: the organic acidic substances etc. such as salt of phenolic compounds, aromatic carboxylic acid or these compounds and polyvalent metal.
As developer, usually with in composite particles, in microcapsules and solid dispersal graininess exist.
Representatively developer, can enumerate such as: 4-TBP, 4-acetyl phenol, 4-tert-octyl phenol, 4, 4 '-Ya sec-butyl biphenol, 4-phenylphenol, 4, 4 '-dihydroxydiphenyl methane, 4, 4 '-isopropylidenediphenol, 4, 4 '-dihydroxydiphenyl ether, 4, 4 '-cyclohexylidene biphenol, 1, two (4-hydroxy phenyl) ethane of 1-, 1, two (4-the hydroxy phenyl)-1-diphenylphosphino ethane of 1-, 4, 4 '-dihydroxy diphenyl sulfide, 4, 4 '-thiobis (3 methy 6 tert butyl phenol), 4, 4 '-dihydroxydiphenylsulisomer, 2, 4 '-dihydroxydiphenylsulisomer, 4-hydroxyl-4 '-isopropoxy diphenylsulphone, 4-hydroxyl-4 '-allyloxy diphenylsulphone, two (3-allyl-4-hydroxy phenyl) sulfone, 4, 4 '-bis-[(4-methyl-3-phenoxycarbonylamino phenyl) urea groups] diphenylsulphone, two (p-hydroxybenzene) butyl acetate, and phenolic compounds or its ester such as two (p-hydroxybenzene) methyl acetate, 4-dihydroxy benaophenonel, 4-hydroxyl phthalic dimethyl ester, 4-HBA methyl esters, 4-HBA propyl ester, 4-HBA secondary butyl ester, 4-HBA phenyl ester, 4-HBA benzyl ester, 4-HBA toluene ester, 4-HBA chlorobenzene ester, 4, the phenolic compounds such as 4 '-dihydroxydiphenyl ether, the aromatic carboxylic acids such as benzoic acid, p-tert-butyl benzoic acid, trichlorobenzoic acid, terephthalic acid (TPA), salicylic acid, 3-tert-butyl salicylic acid, 3-isopropyl salicylic acid, 3-benzyl salicylic acid, 3-(α-methylbenzyl) salicylic acid, 3,5-di-tert-butyl salicylic acids, and the organic acidic substances such as the salt of the polyvalent metal such as these phenolic compounds, aromatic carboxylic acid and such as zinc, magnesium, aluminium, calcium, N-p-toluenesulfonyl-N '-3-(tolysulfonyl oxygen base) phenylurea, N-(p-toluenesulfonyl)-N '-carbamide compound such as (to butoxy carbonyl) urea, N-p-toluenesulfonyl-N '-phenylurea.
In these developers; thermotolerance (suppress surface blur (flesh カ Block リ) from the view point of when storage stability, sensitivity, High temperature storage), in temperature-sensitive colour former, preferably use N-p-toluenesulfonyl-N '-3-(tolysulfonyl oxygen base) phenylurea.In addition, when making the first dyestuff former and the second dyestuff former color development, from the viewpoint of surface blur when can suppress High temperature storage, preferably use same developer.
The content of developer is preferably about 30 ~ about 2000 mass parts relative to total 100 mass parts of dyestuff former usually, is more preferably about 100 ~ about 700 mass parts, more preferably about 150 ~ about 400 mass parts.Certainly also can be used together two or more developers as required.
In the thermal recording medium forming described temperature-sensitive chromonic layer, as dyestuff former, suitably can select according to the tone of color development; From the viewpoint of can easily carry out utilizing the forgery of label to judge, the second dyestuff former color development be needed to be the tone different from the first dyestuff former.
As the dyestuff former producing black color development, can enumerate: 3-pyrrolidine is-6-methyl-7-anilino fluorane also, 3-diethylamino-7-(3-Aminotrifluorotoluene base) fluorane, 3-diethylamino-6-methyl-7-(m-toluidine base) fluorane, 3-(N-isopentyl-N-ethylamino)-7-(o-chloraniline base) fluorane, 3-(N-ethyl-para-totuidine base)-6-methyl-7-anilino fluorane, 3-(N-ethyl-N-2-tetrahydrofurfuryl is amino)-6-methyl-7-anilino fluorane, the chloro-7-anilino fluorane of 3-diethylamino-6-, 3-bis-(normal-butyl) amino-6-methyl-7-anilino fluorane, 3-bis-(n-pentyl) amino-6-methyl-7-anilino fluorane, 3-(N-isopentyl-N-ethylamino)-6-methyl-7-anilino fluorane, 3-(N-n-hexyl-N-ethylamino)-6-methyl-7-anilino fluorane, 3-[N-(3-ethoxycarbonyl propyl)-N-ethylamino]-6-methyl-7-anilino fluorane, 3-[N-(3-ethoxycarbonyl propyl)-N-methylamino]-6-methyl-7-anilino fluorane, 3-diethylamino-7-(2-chloroanilino) fluorane, 3-bis-(normal-butyl) amino-7-(2-chloroanilino) fluorane, 3-diethylamino-6-methyl-7-anilino fluorane, 3-diethylamino-6-methyl-7-(2,6-dimethyl benzene amido) fluorane, 3-diethylamino-6-methyl-7-(2,4-dimethyl benzene amido) fluorane, 2,4-dimethyl-6-(4-dimethylaminoaniline base) fluorane, and 3-(N-cyclohexyl-N-methyl is amino)-6-methyl-7-anilino fluorane etc.
As the dyestuff former producing blue color development, can enumerate: 3, two (to the dimethylamino phenyl)-6-dimethylamino phthalide of 3-, 3-(4-lignocaine-2-aminomethyl phenyl)-3-(4-dimethylamino phenyl)-6-dimethylamino phthalide, 3-(4-lignocaine-2-ethoxyl phenenyl)-3-(1-Ethyl-2-Methyl indol-3-yl)-4-azepine phthalide, 3-(1-Ethyl-2-Methyl indol-3-yl)-3-(4-lignocaine-2-aminomethyl phenyl)-4-azepine phthalide, 3-(1-Ethyl-2-Methyl indol-3-yl)-3-(4-lignocaine phenyl) phthalide, 3-(1-Ethyl-2-Methyl indol-3-yl)-3-(2-methyl-4-lignocaine phenyl)-4-azepine phthalide, 3-(1-Ethyl-2-Methyl indol-3-yl)-3-(2-diethoxy-4-dimethylamino phenyl)-4-azepine phthalide, 3-(1-Ethyl-2-Methyl indol-3-yl)-3-(the just own oxygen base of 2--4-lignocaine phenyl)-4-azepine phthalide, and 3-diphenylamino-6-diphenylamino fluorane etc.
As the dyestuff former producing green color development, can enumerate: 3-(N-ethyl-N-n-hexyl is amino)-7-anilino fluorane, the amino fluorane, 3 of 3-lignocaine-7-dibenzyl, two (4-lignocaine-2-the ethoxyl phenenyl)-4-azepine phthalide of 3-, two (dimethylamino) fluorenes-9-spiral shell-3 of 3-(N-ethyl-N-p-methylphenyl is amino)-7-(N-benzyl-N-methyl) fluorane, 3-[to (to anilino-anilino-) anilino-]-6-methyl-7-chlorine fluorane and 3,6-'-(6 '-dimethylamino) phthalide etc.
As the dyestuff former near infrared region with absorption, can enumerate: 3, 3 '-bis-(4-lignocaine-2-ethoxyl phenenyl)-4-azepine phthalide, 3, 3 '-bis-(1, 1-two (4-pyrrolidine phenyl) ethene-2-base]-4, 5, 6, 7-tetrabromo phthalide, 3, 3 '-bis-[1-(4-methoxyphenyl)-1-(4-dimethylaminophenyl) ethene-2-base]-4, 5, 6, 7-Rabcide, 3, 3 '-bis-[1-(4-methoxyphenyl)-1-(4-pyrrolidine phenyl) ethene-2-base]-4, 5, 6, 7-Rabcide, 3-is to (to anilino-anilino-) anilino--6-methyl-7-chlorine fluorane, 3-is to (to dimethylaminoaniline base) anilino--6-methyl-7-chlorine fluorane, 3, two (dimethylamino) fluorenes-9-spiral shell-3 of 6-'-(6 '-dimethylamino) phthalide, two (to dimethylaminostyryl)-p-methylphenyl sulfonyl methane, 3-[to (to dimethylaminoaniline base) anilino-]-6-methyl fluoran, 3-bis-(n-pentyl) amino-6, 8, 8-trimethyl-8, 9-dihydro-(3, 2, e) pyrido fluorane, 3-bis-(normal-butyl) amino-6, 8, 8-trimethyl-8, 9-dihydro-(3, 2, e) pyrido fluorane, 3-[1, two (to the diethylamino phenyl) ethene-2-base of 1-]-6-dimethylamino phthalide, 3-(to normal-butyl amino aniline base)-6-methyl-7-chlorine fluorane, 2-mesidino-8-diethylamino benzo [c] fluorane etc.
As can use in the utility model with the dyestuff former of red colour system color development, can enumerate: two (diethylamino) fluorane-γ-anilino-lactams of 3,6-, two (diethylamino) fluorane-γ-(to nitro) anilino-lactams of 3,6-, two (diethylamino) fluorane-γ-(adjacent chlorine) the anilino-lactams of 3,6-, 3-dimethylamino-7-bromine fluorane, 3-lignocaine fluorane, 3-lignocaine-6-methyl fluoran, 3-lignocaine-7-methyl fluoran, 3-lignocaine-7-chlorine fluorane, 3-lignocaine-7-bromine fluorane, 3-lignocaine-7,8-benzo fluorane, 3-lignocaine-6,8-dimethyl fluorane, 3-lignocaine-6-methyl-7-chlorine fluorane, 3-lignocaine-7-tert-butyl group fluorane, 3-(N-ethyl-N-toluene amido)-7-methyl fluoran, 3-(N-ethyl-N-toluene amido)-7-ethyl fluorane, 3-(N-ethyl-N-isobutylamino)-6-methyl-7-chlorine fluorane, and 3-(N-ethyl-M-isoamylamino)-7,8-benzo fluorane etc.
In addition, as the dyestuff former producing red colour system color development, can enumerate: 3-Cyclohexylamino-6-chlorine fluorane, 3-bis-(normal-butyl) amino-6-methyl-7-bromine fluorane, amino-7, the 8-benzo fluoranes of 3-bis-(normal-butyl), 3-Tolylamino-7-methyl fluoran, 3-Tolylamino-7-ethyl fluorane, 2-(N-acetylbenzene amido)-3-methyl-6-two (normal-butyl) amino fluorane, 2-(N-propiono anilino-)-3-methyl-6-two (normal-butyl) amino fluorane, 2-(N-Benzoylbenzene amido)-3-methyl-6-two (normal-butyl) amino fluorane, 2-(N-carbonyl butyl phenyl ether amido)-3-methyl-6-two (normal-butyl) amino fluorane, 2-(N-formoxyl anilino-)-3-methyl-6-two (normal-butyl) amino fluorane, 2-(Phenhenzamine base)-3-methyl-6-two (normal-butyl) amino fluorane, 2-(N-allyl benzene amido)-3-methyl-6-two (normal-butyl) amino fluorane, and 2-(methylphenylamine base)-3-methyl-6-two (normal-butyl) amino fluorane, 3-diethylamino-7-phenoxy group fluorane, 3-(N-ethyl-M-isoamylamino)-7-phenoxy group fluorane etc.
In addition, as red color development based dye precursor, can also enumerate: 3, 3 '-bis-(1-normal-butyl-2 methyl indole-3-base) phthalide, 3, 3 '-bis-(1-Ethyl-2-Methyl indol-3-yl) phthalide, 3, 3 '-bis-(1-n-octyl-2 methyl indole-3-base) phthalide, 7-(N-ethyl-M-isoamylamino)-3-methyl isophthalic acid-phenyl spiral shell [(1, 4-dihydrobenzopyrans also [2, 3-c] pyrazoles)-4, 3 '-phthalide], 7-(N-ethyl-M-isoamylamino)-3-methyl isophthalic acid-p-methylphenyl spiral shell [(1, 4-dihydrobenzopyrans also [2, 3-c] pyrazoles)-4, 3 '-phthalide], and 7-(N-ethyl-N-n-hexyl is amino)-3-methyl isophthalic acid-phenyl spiral shell [(1, 4-dihydrobenzopyrans also [2, 3-c] pyrazoles)-4, 3 '-phthalide] etc.
As producing the dyestuff former that yellow is color development, can enumerate: N, N-dimethyl-4-[2-(2-octyloxyphenyl)-6-phenyl-4-pyridine radicals] aniline, N, N-dimethyl-4-[2-(2-butoxy phenyl)-6-phenyl-4-pyridine radicals] aniline, 3,6-dimethoxy fluoranes and 1-(4-n-dodecane oxygen base-3-methoxyphenyl)-2-(2-quinolyl) ethene etc.
In these dyestuff formers, as the combination of the first dyestuff former and the second dyestuff former, judge from the view point of forgery easily can be carried out, the tone (utilizing the colour mixture that the color development of the first dyestuff former and the second dyestuff former produces) of Printing Department when preferred selection makes label utilize the thermal photography of thermal head to print is black system, during color development by the label surface that nuzzles up and/or static color development time color development tone (mainly utilizing the color development of the first dyestuff former and the second dyestuff former) be red colour system.
As the preferred compositions of the first concrete dyestuff former and the second dyestuff former, can illustrate: the first dyestuff former is 3-(N-ethyl-para-totuidine base)-6-methyl-7-anilino fluorane, 3-bis-(n-pentyl) amino-6-methyl-7-anilino fluorane, 3-(N-isopentyl-N-ethylamino)-6-methyl-7-anilino fluorane, second dyestuff former is 3-diethylamino-7 chlorine fluorane, 3-(N-ethyl-M-isoamylamino)-7, 8-benzo fluorane, 3-bis-(normal-butyl) amino-6-methyl-7-bromine fluorane, 3, 3 '-bis-(1-normal-butyl-2 methyl indole-3-base) phthalide.
In label of the present utility model, described temperature-sensitive chromonic layer contains the first dyestuff former with the form of composite particles, contains the second dyestuff former with the form of solid dispersal particulate, thus the color development of the colour mixture of the first dyestuff former and the second dyestuff former can be presented when utilizing the thermal photography of thermal head to print, present when the color development utilizing the forgery of label to judge from described utilize the thermal photography of thermal head to print time the different color development of color development.Below the form of above-mentioned temperature-sensitive chromonic layer is also designated as " temperature-sensitive chromonic layer form 1 ".
In addition, in label of the present utility model, described temperature-sensitive chromonic layer can be have the first temperature-sensitive chromonic layer in the side near supporter, have at least two-layer sandwich construction of the second temperature-sensitive chromonic layer in the side farthest away from supporter.By forming such Rotating fields, the color development of the colour mixture of the first dyestuff former and the second dyestuff former can be presented when utilizing the thermal photography of thermal head to print, present when the color development utilizing the forgery of label to judge from described utilize the thermal photography of thermal head to print time the different color development of color development.Below the form of above-mentioned temperature-sensitive chromonic layer is also designated as " temperature-sensitive chromonic layer form 2 ".
3-1. temperature-sensitive chromonic layer form 1
As the form comprising the composite particles of the first dyestuff former in temperature-sensitive chromonic layer form 1, at least one form in the group being selected from and being made up of following form can be enumerated: (1) uses hydrophobic resin as the form of wall film by the first dyestuff former microencapsulation; (2) in the mother metal comprising the hydrophobic resin obtained by polyhydric isocyanate compound, be dispersed with the form of the first dyestuff former; And (3) first the microparticle surfaces of dyestuff former be polymerized by the compound making to have unsaturated carbon bond and the coating form of the polymkeric substance that obtains.
In the form of the composite particles of described form (1), the solution containing the first dyestuff former becomes core material as liquid part, and it is protected by capsule wall material, and core and shell are clearly distinguished.Therefore, from be considered to the existence of form of composite particles of the form (2) that the first dyestuff former and hydrophobic resin exist with solid solution state, shape is obviously different.
The form of the microencapsulation of the composite particles of described form (1) can use the various known methods such as the method recorded in such as Japanese Laid-Open Patent Publication 59-214691 publication to prepare.Usually, described first dyestuff former is dissolved in organic solvent as required and obtains core material (oil-based liquid), by this core material emulsion dispersion in an aqueous medium, around oiliness drop, form the wall film comprising hydrophobic resin, be prepared thus.As the concrete example of hydrophobic resin of wall film becoming microcapsules, can enumerate such as: urethane resin, carbamide resin, polyamide, vibrin, polycarbonate resin, amine aldehyde resin, melamine resin, polystyrene resin, styrene-methacrylate copolymer resin, styrene-acrylic resin, gelatin, polyvinyl alcohol (PVA) etc.Among those, particularly, there is the excellent heat resistance of the microcapsules of the wall film comprising polyurethane-polyurea resin or amine aldehyde resin, therefore preferably use.
The form of the composite particles of described form (2) by by take polyhydric isocyanate compound as solvent, being solute with the first dyestuff former, emulsifying soln is scattered in water, then carry out the polyreaction of polyhydric isocyanate compound and obtain.
The composite particles of described form (2) is the particulate of the mother metal comprised containing at least one hydrophobic resin (polymer material) being selected from polyureas or polyurethane-polyurea and the first dyestuff former wherein contained, and thinks that the first dyestuff former and hydrophobic resin exist with solid solution state.Consider from the angle of Pressure Fuzzy (pressure カ Block リ), preferably in composite particles, do not contain the liquid such as oil-based solvent.
The chromogen of the first dyestuff former contained in the form (2) of composite particles, with compared with the chromogen of solid dispersal graininess color development, has extremely good storage stability, and the patience especially for oil, plastifier is excellent.Might not be clear and definite about its reason, think that having some between chromogen and hydrophobic resin (mother metal) interacts, thus stabilization.
The red blood cell shape that the outward appearance of the form (2) of composite particles utilizes electron microscope observation to be almost spherical or to cave in a little.Utilize in the cross-section of electron microscope, its shape is internal entity, porous body or ducted body.In addition, in order to obtain suitable color development sensitivity, preferred mean grain size is about 0.2 ~ about 1.5 μm.Mean grain size hour, sometimes for the storage stability deterioration in the color development portion of oil, plastifier etc., it is not preferred that mean grain size is less than 0.2 μm.
The manufacture method of the form (2) of described composite particles can use the method etc. recorded in such as Japanese Unexamined Patent Publication 9-295457 publication.
There is the composite particles of described form (1) ~ (3), except the first dyestuff former, ultraviolet light absorber, antioxidant, oil-soluble fluorescent dyestuff, release agent can also be added as required, and the sensitizer etc. known in thermal recording medium field.The choosing of fine quality of such additive is solid at normal temperatures, also can be liquid.Especially ultraviolet light absorber, hindered phenol anti-oxidants can improve photostability, can preferably use.Especially the Benzotriazole Ultraviolet Stabilizers such as 2-(2-hydroxy-5-methyl base phenyl)-2H-benzotriazole can more preferably be used.
Proportional as containing of the composite particles formed by the first dyestuff former and hydrophobic resin, from the view point of the color development concentration obtaining expecting, in the total solid amount in temperature-sensitive chromonic layer, preferably about 5 ~ about 30 quality %, more preferably from about 10 ~ about 20 quality %.
In the form of the solid dispersal particulate of the second dyestuff former, take water as dispersion medium, utilize sand mill, masher, bowl mill, the various wet crushing mills such as cooperation robot grinding machine (Cobotmill) are pulverized, by itself and polyacrylamide, polyvinylpyrrolidone, polyvinyl alcohol (PVA), sulfonation modifying polyvinyl alcohol (PVA), the modified polyvinylalcohols such as acetoacetyl modified polyvinyl alcohol (PVA), methylcellulose, carboxymethyl cellulose, hydroxypropyl methylcellulose, the water-soluble polymeric compounds such as styrene-maleic anhydride copolymer salt and their derivant, and as required with surfactant, defoamers etc. are dispersed in dispersion medium together and form dispersion liquid, this dispersion liquid can be used for the preparation of temperature-sensitive chromonic layer formation coating fluid.In addition, can after dyestuff former be dissolved in organic solvent, by this solution in water with above-mentioned water-soluble polymers compound for stabilizing agent carries out emulsion dispersion, then evaporation of organic solvent from this emulsifying agent, uses after making dyestuff former solid dispersal micronize.Under any circumstance with the mean grain size of the solid dispersal particulate of the dyestuff former of solid dispersal graininess use, in order to obtain suitable color development sensitivity, being preferably about 0.2 ~ about 3.0 μm, being more preferably about 0.3 ~ about 1.0 μm.
As comprise the second dyestuff former solid dispersal particulate containing proportional, kind according to the second dyestuff former used suitably sets, be not particularly limited, but from the view point of the color development concentration obtaining expecting, in total solid amount such as in temperature-sensitive chromonic layer, be preferably about 2 ~ about 20 quality %, be more preferably about 5 ~ about 10 quality %.
In addition, described " the total solid amount of temperature-sensitive chromonic layer " refers to " the total solid amount of the second temperature-sensitive chromonic layer " when temperature-sensitive chromonic layer form 2.
3-2. temperature-sensitive chromonic layer form 2
When described temperature-sensitive chromonic layer be temperature-sensitive color development form 2 such there is at least two-layer sandwich construction, containing the first dyestuff former in the first temperature-sensitive chromonic layer, containing the second dyestuff former in the second temperature-sensitive chromonic layer.The concrete example of the first dyestuff former and the second dyestuff former can use the above-mentioned dyestuff former enumerated.
In addition, in the first temperature-sensitive chromonic layer and the second temperature-sensitive chromonic layer, developer is contained respectively.As the concrete example of developer, the above-mentioned material enumerated can be used, the developer contained in the first temperature-sensitive chromonic layer and the second temperature-sensitive chromonic layer, contact with dyestuff former contained in respective layer as long as have and make the character of its color development, being just not particularly limited.
The form of the first dyestuff former contained in the first temperature-sensitive chromonic layer can be the form of solid dispersal particulate, also can be the form of composite particles, be relatively easy to angle from preparation, is preferably the form of solid dispersal particulate.
As the solia particle of the first dyestuff former and the preparation method of composite particles, the preparation method same with " form of the composite particles containing the first dyestuff former " and " form of the disperse particles of the second dyestuff former " enumerated in above-mentioned " 3-1. temperature-sensitive chromonic layer form 1 " can be used.
In addition, the form of the second dyestuff former contained in the second temperature-sensitive chromonic layer is the form of solid dispersal particulate, when being no matter the color development when utilizing the thermal photography of thermal head to print and by the label surface that nuzzles up or static color development time, can make full use of the second dyestuff former and carry out color development, be preferred from this angle.
In addition, in temperature-sensitive chromonic layer form 2, in the second temperature-sensitive chromonic layer, also containing the 3rd dyestuff former with the form of composite particles, is preferred from the viewpoint of sensitivity, storage stability.As the concrete example of the 3rd dyestuff former, the above-mentioned dyestuff former enumerated can be used.In addition, as the preparation method of the composite particles of the 3rd dyestuff former, the preparation method same with " form of the composite particles containing the first dyestuff former " enumerated in above-mentioned " 3-1. temperature-sensitive chromonic layer form 1 " can be used.
As the 3rd dyestuff former composite particles containing proportional, from the view point of the color development concentration obtaining expecting, in the total solid amount of temperature-sensitive chromonic layer, be preferably about 10 ~ about 40 quality %, be more preferably about 20 ~ about 30 quality %.
The temperature-sensitive chromonic layer used in the utility model, mainly for improving the storage stability of color development record image, can use image stabilizing agent.As such image stabilizing agent, more than at least one be such as selected from following material can be used: 1, 1, 3-tri-(2-methyl-4-hydroxyl-5-cyclohexyl phenyl) butane, 1, 1, 3-tri-(2-methyl-4-hydroxyl-5-tert-butyl-phenyl) butane, 1, two (2-methyl-4-hydroxyl-5-tert-butyl-phenyl) butane of 1-, 4, 4 '-[1, 4-phenylene two (1-methyl ethylidene)] bis-phenol, and 4, 4 '-[1, 3-phenylene two (1-methyl ethylidene)] phenolic compound such as bis-phenol, 4-benzyloxy-phenyl-4 '-(2-methyl-2, 3-glycidoxy) benzene sulfone, 4-(2-methyl isophthalic acid, 2-epoxy ethyl) diphenylsulphone, and 4-(2-ethyl-1, 2-epoxy ethyl) epoxy compound such as diphenylsulphone, with 1, 3, 5-tri-(2, 6-dimethyl benzyl-3-hydroxyl-4-the tert-butyl group) the isocyanuric acid compound such as isocyanuric acid.Certainly, image stabilizing agent is not limited to these, can also as required and with two or more compounds.
In the utility model, in order to improve the sensitivity of thermal photography color development, sensitizer can be used.As sensitizer, the compound of the known sensitizer as thermal recording medium in the past can be used, can enumerate such as: to benzylbiphenyl, terephthalic acid (TPA) dibenzyl ester, 1-hydroxy-2-naphthoic acid phenylester, dibenzyl oxalate, hexane diacid two o-chlorobenzyl ester, 1,2-biphenoxyl ethane, 1,2-bis-(3-methylphenoxy) ethane, oxalic acid two pairs of methyl-benzyl esters, oxalic acid two p-chlorobenzyl ester, 1,2-two (3,4-3,5-dimethylphenyl) ethane, 1,3-two (2-naphthoxy) propane, meta-terphenyl, biphenyl, benzophenone etc.
The adjuvants such as the developer used in the utility model, image stabilizing agent and sensitizer, being scattered in water with using the identical method of the situation of dyestuff former with solid dispersal graininess, being mixed in wherein when preparing temperature-sensitive chromonic layer formation coating fluid.In addition, also can these adjuvants be dissolved in solvent, by water-soluble polymeric compounds as emulsifying agent, use after emulsification in water.In addition, image stabilizing agent and sensitizer can be included in the composite particles containing dyestuff former.
In the utility model, in order to the homogeneity of the whiteness and image that improve temperature-sensitive chromonic layer, can, mean grain size high containing whiteness be the pigment particle of less than 10 μm in temperature-sensitive chromonic layer.The such as inorganic pigment such as calcium carbonate, magnesium carbonate, porcelain earth, clay, talcum, calcined clay, silicon dioxide (such as amorphous silica particulate etc.), zeyssatite, synthetic aluminium silicate, zinc paste, titanium dioxide, aluminium hydroxide, barium sulphate, surface treated calcium carbonate, silicon dioxide can be used, and the organic pigment such as urea-formaldehyde resin, styrene-t copolymer resins, polystyrene resin.In order to prevent the gas attachment on thermal head and adhere to, preferably use the pigment that oil absorption is more than 50ml/100g.Being preferably containing proportional of pigment: the amount not reducing the degree of color development concentration, that is, below 50 quality % in the total solid amount of temperature-sensitive chromonic layer.
In the utility model, as other composite material forming temperature-sensitive chromonic layer, can tackifier be used, crosslinking chemical, wax class, surfactant, metallic soap, colored dyes, colored pigment and fluorescent dye etc. can also be used as required.In addition, as required, in the scope not damaging effect of the present utility model, the various adjuvants such as oil-repellent agent, defoamer, viscosity modifier can also be added in temperature-sensitive chromonic layer.
As the tackifier used in temperature-sensitive chromonic layer, can enumerate such as: polyvinyl alcohol (PVA) and derivant thereof, starch and derivant thereof, Carboxymethyl Cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, methylcellulose, the cellulose derivatives such as ethyl cellulose, sodium polyacrylate, polyvinylpyrrolidone, acrylamide and acrylic acid ester copolymer, acrylamide and acrylic acid ester-methacrylate copolymer, styrene-maleic anhydride copolymer, isobutyiene-maieic anhydride multipolymer, casein, the water soluble polymer material such as gelatin and derivant thereof, and polyvinyl acetate, polyurethane, polyacrylic acid, polyacrylate, vinyl chloride vinyl acetate copolymer, poly-n-butyl methacrylate, the emulsions such as vinyl-vinyl acetate copolymer, Styrene-Butadiene, the latex etc. of the insoluble polymers such as styrene-butadiene-acrylic copolymer.
In addition, in order to improve the water tolerance of temperature-sensitive colour former, can containing the crosslinking chemical for cured adhesive in temperature-sensitive chromonic layer.Preferably such as be selected from glyoxal etc. aldehyde compound relative to total solid 100 mass parts of temperature-sensitive chromonic layer with the use of the scope of about 1 ~ about 10 mass parts, the polyamine compounds such as poly-Ethylenimine, epoxy compounds, polyamide, melamine resin, glyoxylate, dihydroxymethyl carbamide compound, aziridine cpd, block isocyanate compound and ammonium persulfate, iron chloride, magnesium chloride, sodium tetraborate, the mineral compounds such as dipotassium tetraborate or boric acid, boric acid three ester, the at least one crosslinking chemical of boric acid base polymer etc.
As the wax added in temperature-sensitive chromonic layer, can enumerate: the wax classes such as paraffin, Brazil wax, microcrystalline wax, polyolefin-wax and Tissuemat E, and the such as higher fatty acid amides such as stearic amide, ethylenebis stearic amide, high-grade aliphatic ester and derivant thereof etc.Particularly, when hydroxymethylated fatty acid acid amides is added in temperature-sensitive chromonic layer, can effect of enhanced sensitivity be obtained and not make surface blur deterioration, therefore can preferably use.
As the surfactant added in temperature-sensitive chromonic layer, can enumerate: fatty acid alkali metal salt, the fluorochemical surfactants etc. such as dioctyl sodium sulphosuccinate, neopelex, lauryl alcohol sodium sulfovinate, odium stearate.
As the metallic soap added in temperature-sensitive chromonic layer, can enumerate: higher fatty acid multivalent metal salt, such as zinc stearate, aluminium stearate, calcium stearate and zinc oleate etc.
In the utility model, the microcapsules of ultraviolet light absorber or the solid dispersal particulate of ultraviolet light absorber can also be surrounded by within containing in temperature-sensitive chromonic layer or protective seam disposed thereon as required, significantly improve photostability thus.
As the concrete example of ultraviolet light absorber, such as following material can be enumerated.Can enumerate: phenyl salicylate, salicylic acid to tert-butyl-phenyl ester, salicylic acid to salicylic acid ultraviolet light absorbers such as octyl phenyl esters, 2,4-dihydroxy benaophenonel, 2-hydroxyl-4-octyloxybenzophenone, ESCALOL 567,2-hydroxyl-4-dodecyloxy benzophenones, 2,2 '-dihydroxy-4-methoxy benzophenone, 2, the benzophenone ultraviolet absorbing agents such as 2 '-dihydroxy-4,4 '-dimethoxy-benzophenone, 2-hydroxyl-4-methoxyl-5-diphenylsulfone ketone.
In addition, can also enumerate: 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole, 2-(2 '-hydroxyl-5 '-tert-butyl-phenyl) benzotriazole, 2-(2 '-hydroxyl-3 ', 5 '-di-tert-butyl-phenyl) benzotriazole, 2-(2 '-hydroxyl-3 '-the tert-butyl group-5 '-aminomethyl phenyl)-5-chlorobenzotriazole, 2-(2 '-hydroxyl-3 ', 5 '-di-tert-butyl-phenyl)-5-chlorobenzotriazole, 2-(2 '-hydroxyl-3 ', 5 '-di-tert-pentyl-phenyl) benzotriazole, 2-[2 '-hydroxyl-3 '-(3 ", 4 ", 5 ", 6 "-tetrahydric phthalimide ylmethyl)-5 '-aminomethyl phenyl] benzotriazole, 2-(2 '-hydroxyl-5 '-tertiary octyl phenyl) benzotriazole, 2-[2 '-hydroxyl-3 ', 5 '-bis-(α, α-dimethylbenzyl) phenyl]-2H-benzotriazole, 2-(2 '-hydroxyl-3 '-dodecyl-5 '-aminomethyl phenyl) benzotriazole, 2-[2 '-hydroxyl-4 '-(2 "-ethylhexyl) oxygen base phenyl] benzotriazole, the Benzotriazole Ultraviolet Stabilizers such as the condensation product of polyglycol (molecular weight about 300) and methyl-3-[the 3-tert-butyl group-5-(2H-benzotriazole-2-base)-4-hydroxy phenyl] propionic ester, 2 '-ethylhexyl-2-cyano group-3, 3-diphenylacrylate ester, ethyl-2-cyano group-3, the cyanoacrylate ultraviolet absorbing agents etc. such as 3-diphenylacrylate ester.Certainly, be not limited to these, can also as required and with two or more.
In these ultraviolet light absorbers, preferred Benzotriazole Ultraviolet Stabilizer, particularly 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole, 2-(2 '-hydroxyl-3 '-the tert-butyl group-5-aminomethyl phenyl)-5-chlorobenzotriazole, 2-(2 '-hydroxyl-3 '-dodecyl-5 '-aminomethyl phenyl] benzotriazole, 2-[2 '-hydroxyl-4 '-(2 "-ethylhexyl) oxygen base phenyl] benzotriazole, the condensation product of polyglycol (molecular weight about 300) and methyl-3-[the 3-tert-butyl group-5-(2H-benzotriazole-2-base)-4-hydroxy phenyl] propionic ester, due to the photostability improved effect of highly significant can be played, therefore more preferably.
About the interior addition being surrounded by the microcapsules of ultraviolet light absorber or the solid dispersal particulate of ultraviolet light absorber; be not particularly limited; when being contained in temperature-sensitive chromonic layer and when being contained in the protective seam be arranged in temperature-sensitive chromonic layer described later; in either case; in the total solid amount of each layer, be preferably about 5 ~ about 70 quality %.Particularly preferably be adjusted in the scope of about 15 ~ about 50 quality %.By being adjusted to more than 5 quality %, can photostability being improved, by being adjusted to below 70 quality %, color development sensitivity can be improved.Inside be surrounded by the microcapsules of ultraviolet light absorber or the solid dispersal particulate of ultraviolet light absorber, compared with being included in temperature-sensitive chromonic layer, being included in protective seam and more effectively can improving photostability.
The microcapsules being inside surrounded by ultraviolet light absorber can be prepared by various known method, usually by under above-mentioned normal temperature for the ultraviolet light absorber of solid or liquid is dissolved in organic solvent as required and obtains core material (oil-based liquid), by this core material emulsion dispersion in an aqueous medium, around oiliness drop, form the wall film comprising hydrophobic resin, be prepared thus.As the concrete example of hydrophobic resin of wall film becoming microcapsules, can enumerate such as: urethane resin, carbamide resin, polyamide, vibrin, polycarbonate resin, amine aldehyde resin, melamine resin, polystyrene resin, styrene-methacrylate copolymer resin, styrene-acrylic resin, gelatin, polyvinyl alcohol (PVA) etc.Among those; particularly; there is the excellent heat resistance of the microcapsules of the wall film comprising polyurethane-polyurea resin or amine aldehyde resin; therefore thermal head is adhered in order to prevent; play the excellent adjoint effect realizing the function of the inorganic pigment added in temperature-sensitive chromonic layer or in protective seam; and with comprise compared with the microcapsules of other wall film, common pigment; refractive index is lower and shape is spherical; even if therefore add in a large number in protective seam; also the concentration caused by the diffuse reflection of light can not be caused to reduce, therefore preferably use.
Inside be surrounded by the microcapsules of ultraviolet light absorber, ultraviolet light absorber forms core material as liquid part and is protected by microcapsule wall material; From be considered to the existence of the composite particles containing dyestuff former that dyestuff former and hydrophobic resin exist with solid solution state, shape, expectation function completely different.
In the utility model, in temperature-sensitive chromonic layer, add fluorescer there is the sunproof effect of improvement, can preferably use.Fluorescer has the effect of the light absorbing the longer visible region of the light of ultraviolet range, emit wavelength, is thus widely used as whitening agent.The dyestuff former contained in the composite particles used in the utility model has the character of easily decomposing flavescence because of the light of the high ultraviolet range of energy, by the light utilizing fluorescer ultraviolet to be converted to more harmless long wavelength region, not only can prevent from turning yellow, but also the effect of whiteness aspect can be obtained.In addition, also can by containing fluorescer, improve Printing Department caused by light fade.
As fluorescer operable in the utility model, can enumerate such as: stilbene, cumarin, the derivant of azoles, imidazoles, imidazolone, pyrazoles, biphenylamine, diaminocarbazole, naphthalenedicarboxylic acid, diaminostilbene disulfonic acid.More specifically can enumerate: two (the 5-methyl of 1,2- azoles-2-base) ethene, two (the 5-methyl of β, 4- azoles-2-base) styrene, 3-ethoxy carbonyl-7; 8-benzo cumarin, N-methyl-4-methoxynaphthalene-1; 8-dicarboxylic acid imides, 4-[3-(4-chlorphenyl)-5-phenyl-1-pyrazoline-1-base] benzene sulfonic acid sodium salt, 1; two [4-(the Phenylaminocarbonylamino)-2-sodyl sulfonvlphenyl] ethene, 1 of 2-; two { 4-[2-(to sodyl sulfonanilide the base)-4-two (2-hydroxyethyl) amino-1 of 2-; 3,5-triazine-6-base] amino-2-sodyl sulfonvlphenyl } ethene etc.Among them; as 1 of the derivant of diaminostilbene disulfonic acid; two { 4-[2-(to sodyl sulfonanilide the base)-4-two (2-hydroxyethyl) amino-1 of 2-; 3; 5-triazine-6-base] amino-2-sodyl sulfonvlphenyl } ethene, it is preferred that operational processes when preparing from coating fluid is easy to viewpoint.
About the addition of fluorescer, be not particularly limited, in the total solid amount of temperature-sensitive chromonic layer, be preferably about 0.5 ~ about 15 quality %.Particularly preferably be adjusted to the scope of about 1 ~ about 10 quality %.By being adjusted to more than 0.5 quality %, can effectively prevent from turning yellow; By being adjusted to below 10 quality %, surface colour can not be made because of the color of fluorescer self.
Coating temperature-sensitive chromonic layer makes dried coating weight be about 12 ~ about 55g/m 2, be more preferably about 25 ~ about 35g/m 2.Specifically, being coated with the first temperature-sensitive chromonic layer makes dried coating weight be about 2 ~ about 15g/m 2, be more preferably about 5 ~ about 10g/m 2; Being coated with the second temperature-sensitive chromonic layer makes dried coating weight be about 10 ~ about 40g/m 2, be more preferably about 20 ~ about 30g/m 2.
4. other layer
In the utility model, also undercoat can be set between supporter and temperature-sensitive chromonic layer.When particularly making paper using as supporter, from the view point of raising color development susceptibility and image quality, preferably undercoat is set.In undercoat, by using the pigment that the porosity such as silicon dioxide, calcined kaolin is high, the color development sensitivity of temperature-sensitive chromonic layer can be improved.In addition, containing plastic pigment, (organic) hollow-particle, foaming body etc. in undercoat, also there is the effect of the color development sensitivity of the temperature-sensitive chromonic layer that raising is formed thereon.In addition, in addition, can also containing tackifier etc.As this bonding agent, the material enumerated in above-mentioned " 3. temperature-sensitive chromonic layer " can be used.
In addition, in the utility model, when temperature-sensitive chromonic layer is temperature-sensitive chromonic layer form 2, between the first temperature-sensitive chromonic layer and the second temperature-sensitive chromonic layer, can middle layer be set.By arranging this middle layer, covering that the second temperature-sensitive chromonic layer causes tails off, and can improve the color development concentration of the first temperature-sensitive chromonic layer.
Such middle layer is coated in the first temperature-sensitive chromonic layer and makes dried coating weight be about 10 ~ about 40g/m 2.More preferably with about 15 ~ about 30g/m 2coating.
In described middle layer, preferably containing water soluble polymer material.In the intermediate layer containing the high pigment of the porosity such as silicon dioxide, calcined kaolin and plastic pigment, hollow-particle, foaming body, have glass transition temperature, fusing point the organic compound such as wax time, the dried coating weight in middle layer can be reduced, reduce covering caused by middle layer, the color development concentration of the first temperature-sensitive chromonic layer can be improved.
In the utility model, the protective seam containing the water soluble polymer material used in known thermal recording medium and pigment is preferably set on temperature-sensitive chromonic layer.As water soluble polymer material and pigment, illustrative material in temperature-sensitive chromonic layer can be used in.More preferably add crosslinking chemical at this moment, thus give protective seam water tolerance.
In addition, in protective seam, add fluorescer also there is the sunproof effect of improvement, can preferably use.As fluorescer, the above-mentioned material enumerated can be used.
Such protective seam is coated in temperature-sensitive chromonic layer and makes dried coating weight be about 0.5 ~ about 10g/m 2.More preferably with about 1 ~ about 5g/m 2coating.
In the utility model, can also the resin bed utilizing electron ray, ultraviolet curing be set in temperature-sensitive chromonic layer or on protective seam.As the example of resin bed utilizing electron ray, ultraviolet curing, on the books in Japanese Laid-Open Patent Publication 58-177392 publication.In such resin bed, suitably can add the adjuvants such as non-electronic actinic radiation-curable resin, pigment and defoamer, levelling agent, lubricant, surfactant, plastifier.Particularly, adding the lubricants such as the pigment such as calcium carbonate, aluminium hydroxide, wax class, organosilicon for preventing the use that is stained with on thermal head, is therefore preferred.
Coating utilizes electron ray, the resin bed of ultraviolet curing makes dried coating weight for about 0.5 ~ about 10g/m 2.More preferably with about 1 ~ about 5g/m 2coating.
Label of the present utility model can use the printing such as UV ink, flexo ink.In this case, printing can be printed on any layers such as temperature-sensitive chromonic layer, protective seam, electron ray curing resin bed or ultraviolet curable resin layer.
5. forge the manufacture method of judgement label
Label of the present utility model by forming above-mentioned each layer and manufacturing on supporter.As the method forming above-mentioned each layer on supporter, any one in the coating process that air knife method, knife coating, intagliotype, rolling method, spraying process, dip coating, scraper rubbing method and extrusion molding, curtain coating method etc. can be used known.Utilize these coating processes, be coated with the formation coating fluid of above-mentioned each layer, carry out drying as required, irradiate electron ray etc. and make it solidify, each layer can be set thus.In addition, in order to suppress oil, plastifier from the infiltration at the recording materials back side, or curling in order to control, can also back layer be set.
In addition, after having formed each layer, or formed full layer after arbitrary process in, the smoothing techniques utilizing supercalender, soft press-polishing machine etc. can be implemented.To the process of thermal photography face smoothingization, there is the effect improving its color development sensitivity.The metallic roll of thermal photography face and felt wrapped roll can be made to contact with any one of resilient roller and process.
6. forge judgement label and use the forgery decision method forging judgement label
Color development when forgery judgement label of the present utility model can make the forgery of forgery judgement label judge is with the tone color development different from color development when utilizing the thermal photography of thermal head to print.Therefore, forgery judgement label of the present utility model can as sealing label.Seal for label for this, after forgery judgement label of the present utility model be pasted on seal object, do not peel off or destroy seal label by differentiating the forgery of sealing label self, once also do not break a seal even if seal object, also easily can carry out forgerys judgement.
In addition, the utility model also relates to the label using above-mentioned forgery judgement label, and utilizes this label to judge the method sealing the forgery of object sealed.
As forgery decision method, the thermal photography printing utilizing thermal head is implemented to forgery judgement label, the label after enforcement printing is pasted and seals on object.After stickup, in forgery judges, the color development different from color development when utilizing the thermal photography of thermal head to print is carried out to the surface of this label, thus the forgery of label can be judged.
In the thermal photography printing utilizing thermal head, apply the color development that energy makes to present the colour mixture of the first dyestuff former contained in temperature-sensitive chromonic layer and the second dyestuff former.Therefore, the heating applying condition of thermal head, under high static color development initial temperature, the applying energy condition of setting thermal head makes the first dyestuff former and the second dyestuff former all color developments.At this, " static color development initial temperature " is in the thermosensitive recording body of the monochrome being used alone the particle components containing various dyestuff former, during with the hot plate of constant time, constant pressure pressing set point of temperature, starts the temperature of color development.Temperature, pressure and time, as long as more assorted monochromatic thermosensitive recording body and adjusting condition, be not particularly limited; Can be such as 5 seconds in the duration of contact of hot plate, pressure is 9.8 × 10 4under the condition of Pa, in the scope that temperature is 50 ~ 250 DEG C, every 10 DEG C are carried out color development, measure color development concentration, obtain the temperature that color development concentration is 0.2, as static color development initial temperature.In addition, the condition of the applying energy of thermal head when carrying out thermal photography, is applied voltage by setting, apply pulse height, is applied number of times, suitably regulate thermal head.
As the chromophoric method that the forgery of the label after stickup judges, can enumerate: by color development, the static color development of the label surface that nuzzles up.
Can be enumerated such as by the color development nuzzled up: produce Pressure Fuzzy by nuzzling up of finger tip, writing appliance etc., cause the color development of dyestuff former thus.In addition, static color development can be enumerated: utilize the methods such as the fire of the impression of thermoprinting machine, lighter etc. scorches, cause the color development of dyestuff former.In any means, be not limited to these methods.
In forgery decision method of the present utility model, in color development when color development when utilizing the thermal photography of thermal head to print and the forgery of label judge, tone is different.The difference of such tone can by producing containing different the first dyestuff former of static color development initial temperature and the second dyestuff former in temperature-sensitive chromonic layer.
Specifically, as above-mentioned temperature-sensitive chromonic layer form 1, temperature-sensitive chromonic layer contains the first dyestuff former with the form of composite particles, contain the second dyestuff former with the form of solid dispersal particulate, thus can by utilize the static color development initial temperature setting of the first dyestuff former higher than the static color development initial temperature utilizing the second dyestuff former.In this case, when the thermal photography printing utilizing thermal head, setting heating applying condition makes the temperature higher than the static color development initial temperature utilizing the first dyestuff former and the second dyestuff former, thus presents the tone of the colour mixture coming from the first dyestuff former and the second dyestuff former.On the other hand, in color development when forging judgement, the color development of the first dyestuff former that static color development initial temperature is low presents more strongly than the color development coming from the second dyestuff former, therefore consequently, presents the tone different from the tone of the printing of the thermal photography utilizing thermal head.
In addition, in described temperature-sensitive chromonic layer form 2, temperature-sensitive chromonic layer has and has the first temperature-sensitive chromonic layer in the side near supporter, have at least two-layer sandwich construction of the second temperature-sensitive chromonic layer in the side farthest away from supporter.As mentioned above, when the thermal photography printing utilizing thermal head, the temperature that setting heating applying condition makes higher than the static color development initial temperature utilizing the first dyestuff former and the second dyestuff former, thus the tone presenting the colour mixture being contained in the first dyestuff former in the first temperature-sensitive chromonic layer and the second temperature-sensitive chromonic layer and the second dyestuff former respectively.On the other hand, in color development when forging judgement, the second temperature-sensitive chromonic layer had in the side of the supporter farthest away from label, is subject to the impact that the energy of the color development needs forged when judging is stronger, in the first temperature-sensitive chromonic layer that the side near supporter has, substantially not by the impact of this energy.
Therefore, in the color development when forging judgement, the color development further from the first dyestuff former of supporter presents more strongly than the color development coming from the second dyestuff former, therefore consequently, presents the tone different from the tone of the printing of the thermal photography utilizing thermal head.
Therefore, be pasted in stripping the label sealing object, change after content, then when pasting the label of forgery, whether can easily distinguish the true from the false, being namely pasted onto the label sealed on object is true.
In addition, about not being pasted on the untapped label sealing object, by carrying out forging color development when judging, compare have acomia color, the tone of Printing Department that the thermal photography that utilizes thermal head prints, thus also easily can differentiate the true and false of label itself.
Embodiment
Below enumerate embodiment and carry out more specific description to thermal recording medium of the present utility model, certain the utility model is not limited to these embodiments.In addition, " part " and " % " in embodiment, understood, unless stated otherwise, represents " mass parts " and " quality % " respectively.In addition, the volume average particle size of the pigment coordinated in developer, dyestuff former, composite particle and protective seam uses laser diffraction formula particle size distribution device SALD-2200 (Shimadzu Scisakusho Ltd's manufacture) to measure.
Embodiment 1 [temperature-sensitive chromonic layer form 1]
(preparation of coating liquid for undercoat layer)
Organic hollow-particle dispersion liquid (trade name: ROPAQUESN-1055 will be comprised, hollow rate: 55%, mean grain size: 1.0 μm, Dow Chemical manufactures, solid concentration 26.5 quality %) 80 parts, calcined kaolin (trade name: Attaclay, Engelhard company manufacture) 50% aqueous dispersions (mean grain size 0.6 μm) 140 parts, styrene-butadiene class latex (trade name: L-1571, Asahi Chemical Corp manufactures, solid concentration 48 quality %) 20 parts, 10% aqueous solution 50 parts of oxidized starch, and the composition mix and blend of 20 parts, water and obtain coating liquid for undercoat layer.
(preparation of the first dyestuff former dispersion liquid (A liquid))
3-(N-isopentyl-N-ethylamino)-6-methyl-7-anilino fluorane 8 parts as black color development class first dyestuff former is dissolved in the dicyclohexyl methyl hydride-4 being heated to 100 DEG C, in 4 '-diisocyanate 24 parts, this solution is cooled to 35 DEG C, then 8% polyvinyl alcohol (PVA) (the Nippon Synthetic Chemical Industry Co., Ltd's manufacture of identical temperature is added lentamente, goods name: GohsenolGM-14L) in aqueous solution 250 parts, use homogenizer, the stirring of rotating speed 8000rpm is utilized to carry out emulsion dispersion, then in this emulsified dispersed liquid, add 100 parts, water and carry out homogenising.This emulsified dispersed liquid is warming up to 90 DEG C, carries out the curing reaction of 10 hours, thus the mean grain size obtaining the composite particle containing black color development system first dyestuff former is the dispersion liquid (A liquid) of 1.3 μm.
(preparation of the second dyestuff former dispersion liquid (B liquid))
To comprise as the 3-diethylamino-7-chlorine fluorane 25 parts of red color development system second dyestuff former, 15% aqueous solution 10 parts of hydroxypropyl methylcellulose and the composition of 30 parts, water, the mean grain size utilizing sand mill to be crushed to red color development class second dyestuff former is 1.0 μm, thus obtains dispersion liquid (B liquid).
(preparation of developer dispersion (C liquid))
To the 4-hydroxyl-4 as developer be comprised '-isopropoxy diphenylsulphone 25 parts, 15% aqueous solution 10 parts of hydroxypropyl methylcellulose and the composition of 30 parts, water, the mean grain size utilizing sand mill to be crushed to developer is 1.5 μm, thus obtains developer dispersion (C liquid).
(preparation of sensitizer dispersion liquid (D liquid))
To comprise as oxalic acid two pairs of methyl-benzyl esters 25 parts of sensitizer, 15% aqueous solution 10 parts of hydroxypropyl methylcellulose and the composition of 30 parts, water, the mean grain size utilizing sand mill to be crushed to sensitizer is 1.5 μm, thus obtains sensitizer dispersion liquid (D liquid).
(preparation of coating fluid (I liquid) of temperature-sensitive chromonic layer)
By 12% aqueous solution 125 parts of A liquid 110 parts, B liquid 37 parts, C liquid 74 parts, D liquid 37 parts, amorphous silica particulate (trade name MizukasilP-527, Suisawa Chemical Industry Co., Ltd. manufacture) 10 parts, polyvinyl alcohol (PVA) (saponification degree 98 % by mole, the degree of polymerization 1000), zinc stearate dispersion liquid (trade name: HidorinZ-8-36, solid concentration 36%, Zhong jing grease Co., Ltd. manufacture) 13.9 parts and water 118 parts of mix and blends, thus preparation temperature-sensitive chromonic layer is with coating fluid (I liquid).
(preparation of protective layer used coating fluid)
Acetoacetyl modified polyvinyl alcohol (PVA) (trade name: GohsefimerZ-200, the Nippon Synthetic Chemical Industry Co., Ltd manufacture) 10% liquid 100 parts, porcelain earth 200 parts, zinc stearate 30% dispersion liquid (trade name: HidorinZ-7, Zhong jing grease Co., Ltd. manufacture) 10 parts and 100 parts, water are uniformly mixed, thus obtains protective layer used coating fluid.
(forging the making judging label heat-sensitive paper)
At 64g/m 2without on a face of wood pulp paper (acidic paper), painting bottom coating coating fluid drying makes dried weight be 8.0g/m 2, thus form undercoat, coating temperature-sensitive chromonic layer coating fluid (I liquid) drying makes dried weight be 4.0g/m 2, thus form heat sensitive recording layer, coat protective layer coating fluid drying makes dried weight be 2.0g/m 2, then implement supercalendering, thus obtain forging judgement label electrothermal sensitive recording paper.
(forging the making of judgement label)
Be coated with polysiloxane-based release agent 1.0g/m 2and dried 65g/m 2demoulding sheet (viscose paper) on, coating acrylic adhesives drying makes dried coating weight be 15g/m 2(trade name: SaivinolAT-560, サ イ デ Application KCC system), thus form adhesive phase.Then, judge that label heat-sensitive paper is fitted with obtained above forgery, thus obtain forging judgement label.
Embodiment 2 [temperature-sensitive chromonic layer form 2]
Except in the making of the label heat-sensitive paper of embodiment 1, replace temperature-sensitive chromonic layer with coating fluid (I liquid), be coated with following temperature-sensitive chromonic layer coating fluid (II liquid) and drying makes dried weight be 2.5g/m 2, thus form the first temperature-sensitive chromonic layer, then be coated with following heat sensitive recording layer coating fluid (III liquid) and make dried weight 2.5g/m 2, thus formed beyond the second temperature-sensitive chromonic layer, obtain label electrothermal sensitive recording paper in mode similarly to Example 1.
(preparation of coating fluid (II liquid) of temperature-sensitive chromonic layer)
By 12% aqueous solution 125 parts of A liquid 300 parts, D liquid 74 parts, E liquid 37 parts, amorphous silica particulate (trade name MizukasilP-527, Suisawa Chemical Industry Co., Ltd. manufacture) 10 parts, polyvinyl alcohol (PVA) (saponification degree 98 % by mole, the degree of polymerization 1000), zinc stearate dispersion liquid (trade name: HidorinZ-8-36, solid concentration 36%, Zhong jing grease company manufacture) 13.9 parts and water 118 parts of mix and blends, thus preparation temperature-sensitive chromonic layer is with coating fluid (II liquid).
(preparation of coating fluid (III liquid) of temperature-sensitive chromonic layer)
By 12% aqueous solution 125 parts of B liquid 40 parts, D liquid 74 parts, E liquid 37 parts, amorphous silica particulate (trade name MizukasilP-527, marshy land chemical industrial company manufacture) 10 parts, polyvinyl alcohol (PVA) (saponification degree 98 % by mole, the degree of polymerization 1000), zinc stearate dispersion liquid (trade name: HidorinZ-8-36, solid concentration 36%, Zhong jing grease company manufacture) 13.9 parts and water 200 parts of mix and blends, thus preparation temperature-sensitive chromonic layer is with coating fluid (III liquid).
Embodiment 3 [temperature-sensitive chromonic layer form 2]
Except in the making of the label heat-sensitive paper of embodiment 1, replace temperature-sensitive chromonic layer with coating fluid (I liquid), be coated with following temperature-sensitive chromonic layer coating fluid (IV liquid) and drying makes dried weight be 2.5g/m 2, thus form the first temperature-sensitive chromonic layer, then be coated with heat sensitive recording layer coating fluid (III liquid) and make dried weight be 2.5g/m 2, thus formed beyond the second temperature-sensitive chromonic layer, obtain label electrothermal sensitive recording paper in mode similarly to Example 1.
(preparation of the first dyestuff former dispersion liquid (E liquid))
3-(N-ethyl-para-totuidine base)-6-methyl-7-anilino fluorane 25 parts as black color development class first dyestuff former will be comprised, 15% aqueous solution 10 parts of hydroxypropyl methylcellulose and the composition of 30 parts, water, the mean grain size utilizing sand mill to be crushed to black class first dyestuff former dispersion liquid is 1.0 μm, thus obtains the first dyestuff former liquid (E liquid).
(preparation of coating fluid (IV liquid) of temperature-sensitive chromonic layer)
By E liquid 40 parts, C liquid 74 parts, D liquid 37 parts, amorphous silica particulate (trade name MizukasilP-527, Suisawa Chemical Industry Co., Ltd. manufacture) 10 parts, 12% aqueous solution 125 parts that saponification degree is 98 % by mole, the degree of polymerization is the polyvinyl alcohol (PVA) of 1000, zinc stearate dispersion liquid (trade name: HidorinZ-8-36, solid concentration 36%, Zhong jing grease Co., Ltd. manufacture) 13.9 parts and water 200 parts of mix and blends, thus preparation temperature-sensitive chromonic layer is with coating fluid (IV liquid).
Embodiment 4 [temperature-sensitive chromonic layer form 2]
Except in the making of the label heat-sensitive paper of embodiment 1, replacement temperature-sensitive chromonic layer coating fluid I, is coated with temperature-sensitive chromonic layer coating fluid (IV liquid) and drying makes dried weight be 2.5g/m 2, thus form the first temperature-sensitive chromonic layer, then be coated with heat sensitive recording layer coating fluid I and make dried weight be 2.5g/m 2, thus formed beyond the second temperature-sensitive chromonic layer, obtain label electrothermal sensitive recording paper in mode similarly to Example 1.
Comparative example 1
Except using E liquid 37 parts to replace the temperature-sensitive chromonic layer of embodiment 1 with except the B liquid 37 parts in coating fluid (I liquid), obtain label electrothermal sensitive recording paper in mode similarly to Example 1.
About the forgery judgement label obtained like this, carry out following evaluation test, the results are shown in table 1.
(1) color development concentration
Thermal photography is used to evaluate machine (trade name: TH-PMD, great Cang Motor Corporation manufactures), to apply energy 0.34mJ/ point, each thermosensitive recording body is printed, measure the concentration of recording unit and non-recording unit (surface element) with the visualization model of Macbeth densimeter (trade name: RD-914 type, Macbeth company manufacture).
Numerical value is larger represents that the concentration of printing is denseer, about recording unit, needs in actual applications to be more than 1.00.
(2) judgement evaluation 1 is forged
The color development record surface finger tip of the forgery judgement label that above-mentioned (1) records is nuzzled up 5 times, evaluates the tone of color development with evaluation criterion below.
Zero: occur the color development tone different from utilize thermal photography to evaluate color development tone that machine prints, forgery can be carried out and judge.
×: there is the color development tone identical with utilize thermal photography to evaluate color development tone that machine prints, forgery can not be carried out and judge.
(3) judgement evaluation 2 is forged
On the color development record surface of the forgery judgement label recorded in above-mentioned (1), with 1.5kg/cm 2pressure press hot plate 5 second of 100 DEG C, measure color development concentration now with the magenta filter sheet of Macbeth densimeter (trade name: RD-914 type, Macbeth company manufacture) and cyan color filter measures color development concentration, and measure their concentration difference.If concentration difference is more than 0.5, then to utilize the thermal photography of above-mentioned (1) to evaluate the color development tone of machine different, forgery can be carried out and judge.
Table 1

Claims (7)

1. forge a judgement label, it is characterized in that,
A face of supporter has temperature-sensitive chromonic layer, another face of supporter has adhesive phase,
The color development tone presented when thermal photography prints is different from the color development tone presented when forging and judging,
The first dyestuff former and the second dyestuff former color development when utilizing the thermal photography of thermal head to print also present colour mixture, present when forging and judging from described utilize the thermal photography of thermal head to print time the different tone of tone.
2. forgery judgement label as claimed in claim 1, it is characterized in that, temperature-sensitive chromonic layer is:
There is the first temperature-sensitive chromonic layer in the side near supporter, there is in the side away from supporter at least two-layer sandwich construction of the second temperature-sensitive chromonic layer.
3. forgery judgement label as claimed in claim 2, it is characterized in that, present the color development of the colour mixture of the first dyestuff former, the second dyestuff former and the 3rd dyestuff former when utilizing the thermal photography of thermal head to print, when the color development by the label surface that nuzzles up or static color development time present from described utilize the thermal photography of thermal head to print time the different color development of color development.
4. as claimed in claim 1 or 2 forge judgement label, it is characterized in that, the tone of different tones mainly the second dyestuff former color development.
5. as claimed in claim 1 or 2 forge judgement label, it is characterized in that, the tone of the color development of described colour mixture when utilizing the thermal photography of thermal head to print is black, and the tone of the color development when forgery of described label judges is as redness.
6. as claimed in claim 1 or 2 forge judgement label, it is characterized in that, the color development when forgery of described label judges is as by the color development of the label surface that nuzzles up or static color development.
7. as claimed in claim 1 or 2 forging judgement label, it is characterized in that, describedly utilizing the thermal photography printing of thermal head to be undertaken by applying than the first dyestuff former and the higher temperature of the second dyestuff former static color development initial temperature separately.
CN201420836054.7U 2013-12-25 2014-12-25 Forging is judged and is used label Expired - Fee Related CN204759917U (en)

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