EP3221153B1 - Heat sensitive recording material - Google Patents
Heat sensitive recording material Download PDFInfo
- Publication number
- EP3221153B1 EP3221153B1 EP16733414.3A EP16733414A EP3221153B1 EP 3221153 B1 EP3221153 B1 EP 3221153B1 EP 16733414 A EP16733414 A EP 16733414A EP 3221153 B1 EP3221153 B1 EP 3221153B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat
- sensitive recording
- coating composition
- recording layer
- recording material
- 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.)
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- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- WKEDVNSFRWHDNR-UHFFFAOYSA-N salicylanilide Chemical compound OC1=CC=CC=C1C(=O)NC1=CC=CC=C1 WKEDVNSFRWHDNR-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Images
Classifications
-
- 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
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/426—Intermediate, backcoat, or covering layers characterised by inorganic compounds, e.g. metals, metal salts, metal complexes
-
- 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
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
- B41M5/443—Silicon-containing polymers, e.g. silicones, siloxanes
-
- 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
- B41M5/323—Organic colour formers, e.g. leuco dyes
-
- 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
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/04—Direct thermal recording [DTR]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/40—Cover layers; Layers separated from substrate by imaging layer; Protective layers; Layers applied before imaging
Definitions
- the present invention relates to a heat-sensitive recording material comprising a sheet-shaped substrate and a heat-sensitive recording layer disposed on the web-shaped substrate, said heat-sensitive recording layer containing at least one dye precursor and at least one (color) developer reactive with said at least one dye precursor.
- a dye precursor in the context of the present invention in all its embodiments proposed here, means that this at least one (color) developer reacts with this at least one dye precursor with sufficient supply of external heat to form a visually recognizable printed image.
- the surface of the thermosensitive recording material is formed dephasesiv against adhesive layers, which are applicable to the back of the web-shaped substrate.
- Heat-sensitive and color-sensitive to the supply of external heat recording materials have been known for many years and enjoy a basically unbroken popularity, which is due, inter alia, that their use for the ticket and / or purchase receipts and / or tickets issuing businessman with large Benefits connected. Because the color-forming components, that is, dye precursors and color-responsive developers (also called color acceptors) in such heat-sensitive recording processes are contained in the recording material itself, the toner and color-cartridge-free thermal printers, which are therefore thermally sensitive in their function no longer needs to be regularly monitored by anyone, are set up in large numbers.
- the backside adhesive layers may be covered by a separate release paper until their use, but much more popular and practical in handling them are those recording materials which have surfaces on the front which are dehesive to the backside adhesive layers. In this case, the backside adhesive layers are covered until they are used by the front surface surfaces of the recording materials themselves wound up as a roll where front and back sides come together.
- a heat-sensitive recording material proposed therein has a protective layer comprising a UV-curing resin and a copolymer resin comprising a silicone component as a copolymerizing component. From heat-sensitive recording materials for self-adhesive tickets is not mentioned in this document, even if it turned out to be suitable.
- the EP 1 637 339 B1 proposes the EP 1 637 339 B1 a heat-sensitive recording material having a substrate, a heat-sensitive recording layer and a protective layer, in which the protective layer has, in particular, a release agent in addition to binder resin, filler and crosslinking agent.
- This release agent is introduced as a spherical and particulate silicone compound with a special formula.
- a disadvantage of this known proposal is the complex and expensive production with substrate, recording layer and final protective layer, the protective layer because of their filler and binder components to all abundance also the dynamic and static sensitivity of the known heat-sensitive recording material against supplied external heat to form a visually noticeable print image reduced.
- the diffusion layer (4) makes a significant contribution to the ply adhesion between the impingement having a release agent (5) and the heat-sensitive recording layer (3). Without the diffusion layer (4), there were problems in ply adhesion between the release agent (5) and the heat-sensitive recording layer (3), which causes problems in the use of the recording material.
- the heat-sensitive recording material proposed on this side has an intermediate layer (2) having hollow-body pigments positioned between the web-shaped substrate (1) and the heat-sensitive recording layer (3).
- Such a heat-sensitive recording material is produced by a method, the method comprising at least the method steps as defined in claim 14.
- a proportion of from 5% by weight to 50% by weight of the silicone component diffuses, preferably from 6 to 45% by weight, particularly preferably from 7 to 4% by weight, very particularly preferably from 8 to 32% by weight applied third coating composition in the side of the heat-sensitive recording layer (3) facing the applied third coating composition.
- the coating composition and / or the silicone component has a viscosity of from 50 to 1000 mPas, preferably from 50 to 100 mPas or from 500 to 1000 mPas.
- the silicone component is particularly preferred for the silicone component to be an aqueous emulsion or a UV-crosslinking silicone component, wherein the crosslinking takes place radically (preferably under a nitrogen-protective atmosphere) or cationically.
- the application (5) can be formed by drying (and possibly taking place crosslinking) of the aqueous silicone emulsion, wherein the drying is preferably carried out gently in a temperature range between 40 and 60 ° C.
- the silicone component is not a thermally crosslinking silicone component or a silicone component dissolved in an organic solvent.
- thermosensitive recording layer (3) After the third coating composition is applied to the finished thermosensitive recording layer (3), a part of the third coating composition diffuses into the upper portion of the formed thermosensitive recording layer (3), wherein a proportion of 5 to 50 wt% of the total of the releasing agents of the third coating composition Preferably, a proportion of 6 to 45 wt .-%, particularly preferably a proportion of 7 to 40 wt.%, Most preferably a proportion of 8 to 32 wt .-%, in the upper region of the formed thermosensitive recording layer (3) diffused.
- the release agent having an adhesion (5) is formed, the anchoring of which with the below them thermosensitive recording layer (3 ) is ensured by the part of the third coating composition diffused into the recording layer.
- the upper portion of the heat-sensitive recording layer (3) having the diffused portion of the third coating composition then forms the diffusion layer (4) through the above-mentioned drying.
- loading (5) having the release agent had a basis weight in a range of 0.5 g / m 2 to 3 g / m 2 0.8 g / m 2 to 1.85 g / m 2 , more preferably 0.85 g / m 2 to 1.35 g / m 2 , are particularly suitable, while at the same time the diffusion layer (4) as the upper region in the heat-sensitive recording layer (3) having a preferred thickness of 0.2 ⁇ m to 0.8 ⁇ m, preferably 0.2 ⁇ m to 0.5 ⁇ m, in which a part of the third coating composition is diffused with a preferred calculated area-related mass for the diffusion layer (4 ) from 0.15 g / m 2 to 0.65 g / m 2 , was recognized as optimum.
- the inorganic pigment is shaped like a platelet, as is the case, for example, with kaolinite and talc. Kaolinite and talc as the inorganic pigment are therefore particularly preferred.
- the inorganic, platelet-shaped pigment in particular kaolinite and talc
- has an aspect ratio also called “aspect ratio” or “shape factor” of from 5 to 100, preferably from 15 to 100, particularly preferably from 20 to 100 having.
- the aspect ratio of Inorganic pigment greater than 20.
- the aspect ratio is the quotient between the diameter and the thickness of the platelet of the inorganic pigment before mixing with the other components.
- An aspect ratio of 20 means that the diameter of the plate is 20 times larger than the thickness of the plate.
- the polyvinyl alcohol used as the binder has a degree of saponification greater than 97 mole percent, preferably a saponification degree of from 97 mole percent to about 99 mole percent, or alternatively greater than 99 mole percent, and a according to DIN 53015 on an aqueous solution with 4 mass% at 20 ° C measured viscosity of more than 7 mPas, preferably more than 12 mPas, more preferably more than 15 mPas.
- PVA polyvinyl alcohol
- it is a polyvinyl alcohol (PVA) 15-99, preferably having a degree of saponification of 99 to 99.8 mole%, or a corresponding higher saponification and / or higher PVA than PVA 15-99.
- the binder is crosslinking (self or externally crosslinking) and / or modified polyvinyl alcohol, wherein the modified polyvinyl alcohol is preferably diacetone-modified polyvinyl alcohol, silanol group-modified polyvinyl alcohol, carboxyl group-modified polyvinyl alcohol and / or a polyvinyl alcohol-co-ethylene copolymer is, preferably diacetone-modified polyvinyl alcohol or silanol group-modified polyvinyl alcohol and / or a polyvinyl alcohol-co-ethylene copolymer.
- the modified polyvinyl alcohol is preferably diacetone-modified polyvinyl alcohol, silanol group-modified polyvinyl alcohol, carboxyl group-modified polyvinyl alcohol and / or a polyvinyl alcohol-co-ethylene copolymer is, preferably diacetone-modified polyvinyl alcohol or silanol group-modified polyvinyl alcohol and / or a polyvinyl alcohol
- the heat-sensitive recording layer (3) contains at least one crosslinking aid selected from the list comprising: boric acid, polyamine, epoxy resin, dialdehyde, formaldehyde oligomers , Epiochlorohydrin resin, Adipic dihydrazide, dimethylurea, melamine formaldehyde, alone or in admixture with each other.
- crosslinking aid selected from the list comprising: boric acid, polyamine, epoxy resin, dialdehyde, formaldehyde oligomers , Epiochlorohydrin resin, Adipic dihydrazide, dimethylurea, melamine formaldehyde, alone or in admixture with each other.
- ethylene-vinyl acetate copolymer as the sole binder or in combination with polyvinyl alcohol as a particularly preferred binder, based on the total weight of the heat-sensitive recording layer (3), in a range of 10 to 20 wt .-% in the heat-sensitive recording layer (3) is incorporated.
- the proposed method provides for the preparation of a second coating composition for forming a heat-sensitive recording layer (3) arranged on the front side of the web-shaped substrate (1), whereby the use of container scales for the precise feeding and metering of bulk components and liquid components is particularly suitable for this purpose.
- thermosensitive recording material preferably has, as a dye precursor in the second coating composition for forming the thermosensitive recording layer (3), those selected from the list comprising 3-diethylamino-6-methyl-7-anilinofluoran, 3-dibutylamino-6-methyl 7-anilinofluoran, 3- ( N -methyl- N- propyl) amino-6-methyl-7-anilinofluoran, 3- ( N- ethyl-N-isoamyl) amino-6-methyl-7-anilinofluoran, 3- ( N -Methyl- N- cyclohexyl) amino-6-methyl-7-anilinofluoran, 3- ( N- ethyl- N- tolyl) amino-6-methyl-7-anilinofluoran, 3- ( N- ethyl- N- tetrahydrofuryl) -amino -6-methyl-7-anilinofluoran, 3-di-n-pentyl-amino-6
- the second coating composition for forming the thermosensitive recording layer (3) may be at least one sensitizer selected from the list consisting of N-hydroxymethylstearic acid amine, N- stearylstearic acid amide, ethylenebisstearic acid amine, N- stearylurea, benzyl-2-naphthyl ether, m -terpenyl, to increase the thermal responsiveness.
- the second coating composition contains at least one sensitiser selected from the list comprising benzyl 2-naphthyl ether, 1,2-bis (3-methylphenoxy) ethane and 1,2-diphenoxyethane.
- these sensitizers are each used alone, that is, not in combination with the other sensitisers mentioned above.
- at least two sensitisers selected from the above list are included in the second coating composition.
- the basis weight of the heat-sensitive recording layer (3) is between 2.4 to 6.2 g / m 2 , preferably between 2.5 and 6.2 g / m 2, and more preferably between 2.5 and 4.9 g / m 2 .
- the recording material proposed here preferably has an intermediate layer (2) positioned between the sheet-shaped substrate (1) and the heat-sensitive recording layer (3), as already described was executed in the front of the description.
- the high importance of the organic hollow body pigments in the intermediate layer (2) is based on the fact that such organic pigments are to a particular extent a high heat reflectivity of the intermediate layer (2) conducive.
- the hollow body pigments have in their interior air, which is a good heat insulator.
- the thus optimized as a heat reflection layer intermediate layer (2) increases so far specifically the response of the recording layer (3) to heat.
- the intermediate layer (2) very particularly preferably also comprises inorganic pigments, the inorganic pigments being selected individually or in combination with one another from the list comprising: natural and calcined kaolin, silicon oxide and in particular bentonite, Calcium carbonate and aluminum hydroxide and here especially boehmite.
- the thermal head initiating the color-forming reaction of the dye precursors with the (color) developers in the heat-sensitive recording layer (3) causes the wax-like components to melt in the recording layer (3).
- the preferred incorporated inorganic pigments of the intermediate layer (2) also cause absorption of this melt.
- the inorganic pigments of the intermediate layer (2) an oil absorption of at least 80 cm3 / 100 g, and more preferably 100 cm3 / 100 g, determined according to the Japanese standard JIS K 5101, have. This requirement is met by the above-mentioned inorganic pigments.
- the ratio between the total of organic hollow body pigments and the total of inorganic pigments within the intermediate layer (2) is a compromise of the effects caused by the two types of pigments, which is particularly advantageously solved if the pigment mixture to 5 to 30 wt .-% or better to 8 to 20 wt .-% of organic and 95 to 70 wt .-% or better to 92 to 80 wt .-% of inorganic pigment.
- Pigment mixtures of different organic and / or different inorganic pigments are conceivable.
- the intermediate layer (2) contains at least one binder, preferably based on a synthetic polymer, with styrene-butadiene latex, for example, giving particularly good results.
- a synthetic binder in admixture with at least one natural polymer, more preferably starch, is a particularly suitable embodiment.
- the first coating composition for forming the intermediate layer (2) is applied by means of a leveling coating process selected from the list comprising: roller coater, doctor blade and doctor blade coater.
- the intermediate layer (2) can make a positive contribution to the leveling of the substrate surface, which reduces the amount to be applied for the second coating composition for forming the heat-sensitive recording layer (3).
- Subsequent drying of the coating composition to form the Intermediate layer (2) is usually done by supplying heat, as done by hot-air floating dryer or contact dryer. Also proven is a combination of hot-air floatation dryer and contact dryer.
- a preferred range between 5 and 20 g / m 2 and even better between 7 and 12 g / m 2 has proven.
- an intermediate layer is used between the sheet-shaped substrate (1) and the heat-sensitive recording layer (3) which contains no hollow body pigments but inorganic pigments, the inorganic pigments preferably being used singly or in combination selected among themselves from the list, comprising: natural or calcined kaolin, silica and here especially bentonite, calcium carbonate and aluminum hydroxide and here especially boehmite.
- paper and especially a non-surface treated base paper is the substrate that has prevailed on the market with regard to good environmental compatibility because of good recyclability and is preferred for the purposes of the invention
- a non-surface treated base paper is to be understood as meaning a base paper which has not been treated in a size press or in a coating device.
- films of polypropylene, polyolefin and polyolefin-coated papers, for example, are possible to the same extent as a web-shaped substrate (1), without such an embodiment having an exclusive character.
- Another aspect of the present invention is the use of a heat-sensitive recording material according to the invention as a self-adhesive ticket, self-adhesive ticket, self-adhesive proof of purchase, self-adhesive label or self-adhesive tickets.
- thermosensitive recording material prepared by a method of the present invention.
- thermosensitive recording materials having different basis weights of 2.4 g / m 2 , 2.5, g / m 2 , 3.0 g / m 2 , 4.0 g / m 2 , 5.0 g / m 2 and 6.2 g / m 2 .
- carrier paper As a web-shaped substrate (carrier paper), the carrier paper described in Example 2 with a basis weight of 64 g / m 2 is used.
- the aqueous paints used for this heat-sensitive recording layer (3) contain the following components according to the formulations shown in Table 1: Table 1: Data in wt .-% (atro), based on the total weight of the heat-sensitive recording layer dye precursor 3-dibutylamino-6-methyl-7-anilinofluoran (ODB-2) 9 9 9 (Color) Developer N- (p-toluenesulphonyl) -N'-3- (p-toluenesulphonyl-oxyphenyl) urea (Pergafast® 201 (BASF)) 20 20 20 sensitizer Benzyl 2-naphthyl ether (BNE) 16 16 1,2-diphenoxyethane 16 binder polyvinyl alcohol 15 Polyvinyl alcohol co-ethylene copolymer (EVOH) 15 15 co-binder Acrylate copolymers 10 10 methylcellulose 2 2 pigment Talc (platelet-shaped with an aspect ratio of 25) 16 16 88
- a heat-sensitive recording layer having a basis weight of 2.5 g / m 2 is applied in each case by means of a roller doctor coater.
- the aqueous coating composition used for this purpose contains the following components according to the recipe given in Table 2.
- a web-shaped substrate is on a fourdrinier paper machine from bleached and ground deciduous and softwood pulps with the addition of, based on the total solids content (atro) of the pulp fed pulp, 0.8 wt .-% AKD glue as engine sizing and other conventional admixtures a backing paper having a basis weight of 64 g / m 2 made.
- styrene-butadiene latex as a binder and, in addition to other aids starch cobinder-containing intermediate layer having a basis weight of 9 g / m 2 applied using a doctor blade.
- a heat-sensitive recording layer having a basis weight of 2.5 g / m 2 is applied by means of a roller doctor coater.
- the aqueous coating used for this purpose contains the following components according to the recipe given in Table 2: Table 2: Data in wt .-% (atro), based on the total weight of the heat-sensitive recording layer dye precursor 3-dibutylamino-6-methyl-7-anilinofluoran (ODB-2) 9 (Color) Developer N- (p-toluenesulphonyl) -N'-3- (p-toluenesulphonyl-oxyphenyl) urea (Pergafast® 201 (BASF)) 20 sensitizer Benzyl 2-naphthyl ether (BNE) 16 binder Polyvinyl alcohol co-ethylene copolymer (EVOH) 15 co-binder Acrylate copolymers 10 methylcellulose 2 pigment Talc (platelet-shaped with an aspect ratio
- heat-sensitive recording layer which are not stated in percent and based on the total weight in% by weight (atro) include dispersants, defoamers, optical brighteners, thickeners, waxes and crosslinkers.
- the prepared web-shaped substrate with intermediate layer and heat-sensitive recording layer is coated on the front side (on the heat-sensitive recording layer) by an anilox roller coater with a radically curing standard UV-silicone system.
- the solvent-free Evonik standard silicone system used for this purpose contains a formulation given in Table 3.
- the silicone coating is about 1.2 g / m 2 .
- Table 3 RC-711 silicone acrylate 25 parts by weight RC-902 silicone acrylate 50 parts by weight RC-1772 silicone acrylate (mixture with matting agent) 25 parts by weight TEGO photoinitiator A-18 2 parts by weight
- the thus obtained release agent is cured with a UV lamp (80 W / cm) under a protective gas atmosphere of nitrogen.
- a heat-sensitive recording material according to the invention is obtained in which the application layer comprising the release agents does not detach from the heat-sensitive recording layer. Even after storage for 30 days, the release agent-containing coating layer can not be detached from the heat-sensitive recording layer.
- the produced recording material has a good sensitivity.
- Example 2 was repeated except that the composition of the pigmented interlayer was changed.
- the altered composition of the pigmented interlayer is given in Table 4.
- Table 4 water 100 parts by weight 30% dispersion of fine hollow particles (particle size: 0.45 ⁇ m) 300 parts by weight 25% solution of oxidized starch 24 parts by weight 48% latex (glass transition temperature: 0 ° C) 25 parts by weight
- a heat-sensitive recording material according to the invention is obtained in which the application layer comprising the release agents does not detach from the heat-sensitive recording layer. Even after storage for 30 days, the release agent-containing coating layer can not be detached from the heat-sensitive recording layer.
- the produced recording material has a very good sensitivity.
- an adhesive layer was formed by applying a polyacrylic resin adhesive.
- the web-shaped substrate was then rolled up, so that the adhesive layer is on the release agent layer having a release agent. Even after storage for 30 days, individual layers of the thermosensitive recording material can be unrolled without dissipating the releasing layer having the releasing agent from the thermosensitive recording layer or leaving residues of the adhesive layer on the impurity-containing impingement layer.
- an adhesive layer was formed by applying a polyacrylic resin adhesive.
- the web-shaped substrate was then rolled up, so that the adhesive layer is on the release agent layer having a release agent. Even after storage for 30 days, individual layers of the thermosensitive recording material can be unrolled without dissipating the releasing layer having the releasing agent from the thermosensitive recording layer or leaving residues of the adhesive layer on the impurity-containing impingement layer.
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Description
Die vorliegende Erfindung betrifft ein wärmeempfindliches Aufzeichnungsmaterial mit einem bahnförmigen Substrat und einer vorderseitig auf dem bahnförmigen Substrat angeordneten wärmeempfindlichen Aufzeichnungsschicht, wobei diese wärmeempfindliche Aufzeichnungsschicht mindestens einen Farbstoffvorläufer und mindestens einen mit diesem mindestens einem Farbstoffvorläufer reaktionsfähigen (Farb-)Entwickler enthält. Mit einem Farbstoffvorläufer reaktionsfähig zu sein bedeutet, im Sinne der vorliegenden Erfindung in all ihren hier vorgeschlagenen Ausführungsformen, dass dieser mindestens eine (Farb-)Entwickler bei ausreichender Zufuhr von externer Wärme mit diesem mindestens einem Farbstoffvorläufer unter Ausbildung eines visuell erkennbaren Druckbildes reagiert. Gattungsgemäß ist die Oberfläche des wärmeempfindlichen Aufzeichnungsmaterials dehäsiv ausgebildet gegenüber Klebstoffschichten, die auftragbar sind auf der Rückseite des bahnförmigen Substrats.The present invention relates to a heat-sensitive recording material comprising a sheet-shaped substrate and a heat-sensitive recording layer disposed on the web-shaped substrate, said heat-sensitive recording layer containing at least one dye precursor and at least one (color) developer reactive with said at least one dye precursor. To be reactive with a dye precursor, in the context of the present invention in all its embodiments proposed here, means that this at least one (color) developer reacts with this at least one dye precursor with sufficient supply of external heat to form a visually recognizable printed image. Generically, the surface of the thermosensitive recording material is formed dehäsiv against adhesive layers, which are applicable to the back of the web-shaped substrate.
Wärmeempfindliche und auf die Zufuhr von externer Wärme farbbildend reagierende Aufzeichnungsmaterialien sind seit vielen Jahren bekannt und erfreuen sich einer im Grundsatz ungebrochenen Beliebtheit, was unter anderem darauf zurückzuführen ist, dass ihre Verwendung für den Ticket und/oder Kaufbelege und/oder Eintrittskarten ausgebenden Geschäftsmann mit großen Vorteilen verbunden ist. Weil die farbbildenden Komponenten, das sind Farbstoffvorläufer und mit ihnen bei der Zuführung von Wärme reagierende (Farb-)Entwickler - auch Farbakzeptoren genannt, bei einem derartigen wärmeempfindlichen Aufzeichnungsverfahren in dem Aufzeichnungsmaterial selbst stecken, können die deshalb Toner- und Farbkartuschen-freien Thermodrucker, die in ihrer Funktion von niemandem mehr regelmäßig kontrolliert werden müssen, in großer Zahl aufgestellt werden.Heat-sensitive and color-sensitive to the supply of external heat recording materials have been known for many years and enjoy a basically unbroken popularity, which is due, inter alia, that their use for the ticket and / or purchase receipts and / or tickets issuing businessman with large Benefits connected. Because the color-forming components, that is, dye precursors and color-responsive developers (also called color acceptors) in such heat-sensitive recording processes are contained in the recording material itself, the toner and color-cartridge-free thermal printers, which are therefore thermally sensitive in their function no longer needs to be regularly monitored by anyone, are set up in large numbers.
Ausgesprochen beliebt sind in diesem Zusammenhang insbesondere solche wärmeempfindliche Aufzeichnungsmaterialien, welche vorderseitig eine hinsichtlich ihrer funktionellen Bestandteile oben schon diskutierte Aufzeichnungsschicht aufweisen und rückseitig eine Klebstoffschicht, die es dem Benutzer ermöglicht, wärmeempfindliche Aufzeichnungsmaterialien als selbstklebende Tickets zu verwenden. So hat sich diese innovative Technologie in einem besonderen Maße im Einzelhandel - beispielsweise zur Auszeichnung von selbst auszuwiegenden Produkten - und auch im öffentlichen Personenverkehr - beispielsweise als Kofferaufkleber - weitgehend flächendeckend durchgesetzt.Specially popular in this context are, in particular, those heat-sensitive recording materials which have on the front side a recording layer already discussed with regard to their functional constituents and an adhesive layer on the back which enables the user to use heat-sensitive recording materials as self-adhesive tickets. For example, this innovative technology has been widely used extensively in the retail sector - for example, for labeling self-weighted products - and also in public passenger transport - for example, as a suitcase sticker.
Die rückseitigen Klebstoffschichten können bis zu ihrer Verwendung von einem separaten Releasepapier abgedeckt sein, wesentlich beliebter und auch praktischer in ihrer Handhabung sind jedoch solche Aufzeichnungsmaterialien, die vorderseitig Oberflächen aufweisen, die dehäsiv ausgebildet sind gegenüber den rückseitigen Klebstoffschichten. In diesem Fall werden die rückseitigen Klebstoffschichten bis zu ihrer Verwendung von den vorderseitig dehäsiv ausgebildeten Oberflächen der Aufzeichnungsmaterialien selbst, aufgewickelt als Rolle, wo jeweils Vorder- und Rückseite zusammenkommen, abgedeckt.The backside adhesive layers may be covered by a separate release paper until their use, but much more popular and practical in handling them are those recording materials which have surfaces on the front which are dehesive to the backside adhesive layers. In this case, the backside adhesive layers are covered until they are used by the front surface surfaces of the recording materials themselves wound up as a roll where front and back sides come together.
So erläutert die
Auch mit dem Ziel, eine eher unerwünschte Penetration eines Silikonauftrags in ein Basispapier zu verhindern, schlägt die
Gegenstand der
In diesem Sinne schlägt dann die
Für diese Anmeldung ebenfalls relevante Dokumente sind die
So ist es Aufgabe der vorliegenden Erfindung, ein wärmeempfindliches Aufzeichnungsmaterial mit überzeugender Empfindlichkeit gegenüber zugeführter externer Wärme zur Ausbildung eines visuell erkennbaren Druckbildes zur Verfügung zu stellen, das zu moderaten Herstellungskosten hergestellt und als selbstklebendes Ticket mit rückseitiger Klebeschicht ohne zusätzliches Releasepapier ausgeführt werden kann.Thus, it is an object of the present invention to provide a heat-sensitive recording material with convincing sensitivity to supplied external heat for forming a visually recognizable printed image, which can be manufactured at a moderate production cost and run as a self-adhesive ticket with back adhesive layer without additional release paper.
Zur Lösung der Aufgabe wird ein wärmeempfindliches Aufzeichnungsmaterial vorgeschlagen mit den Merkmalen wie in Anspruch 1 definiert.To achieve the object, a heat-sensitive recording material is proposed with the features as defined in
In eigenen Untersuchungen hat sich überraschender Weise herausgestellt, dass die Diffusionsschicht (4) einen wesentlichen Beitrag zur Lagenhaftung zwischen der ein Trennmittel aufweisenden Beaufschlagung (5) und der wärmeempfindlichen Aufzeichnungsschicht (3) leistet. Ohne die Diffusionssicht (4) traten Probleme in der Lagenhaftung zwischen der ein Trennmittel aufweisenden Beaufschlagung (5) und der wärmeempfindlichen Aufzeichnungsschicht (3) auf, die zu Problemen bei der Verwendung des Aufzeichnungsmaterials führen.In our own investigations, it has surprisingly been found that the diffusion layer (4) makes a significant contribution to the ply adhesion between the impingement having a release agent (5) and the heat-sensitive recording layer (3). Without the diffusion layer (4), there were problems in ply adhesion between the release agent (5) and the heat-sensitive recording layer (3), which causes problems in the use of the recording material.
Als fertig gebrauchsfähiges Aufzeichnungsmaterial weist es bevorzugt eine auf der Rückseite des bahnförmigen Substrats (1) angeordnete Klebstoffschicht (7) auf. Da sowohl die dynamische wie auch die statische Empfindlichkeit der wärmeempfindlichen Aufzeichnungsschicht gegenüber zugeführter externer Wärme zur Bewirkung eines visuell erkennbaren Druckbildes durch die ein Trennmittel aufweisende Beaufschlagung (5) verringert wird, was zwar nicht in einem Maße geschieht wie bei einer füllstoffhaltigen Schutzschicht aber trotzdem zumindest deutlich erkennbar, ist es vorteilhaft im Sinne der vorliegenden Erfindung, wenn das diesseits vorgeschlagene wärmeempfindliche Aufzeichnungsmaterial eine zwischen dem bahnförmigen Substrat (1) und der wärmeempfindlichen Aufzeichnungsschicht (3) positionierte Hohlkörperpigmente aufweisende Zwischenschicht (2) aufweist.As a ready-to-use recording material, it preferably has an adhesive layer (7) arranged on the back side of the web-shaped substrate (1). Since both the dynamic and the static sensitivity of the heat-sensitive recording layer against supplied external heat to cause a visually recognizable printed image by the release agent having an impact (5) is reduced, which does not happen to a degree as in a filler-containing protective layer but still at least clearly It can be seen that it is advantageous for the purposes of the present invention if the heat-sensitive recording material proposed on this side has an intermediate layer (2) having hollow-body pigments positioned between the web-shaped substrate (1) and the heat-sensitive recording layer (3).
Ein derartiges wärmeempfindliches Aufzeichnungsmaterial wird hergestellt mit einem Verfahren, wobei das Verfahren mindestens die Verfahrensschritte wie sie in Anspruch 14 definiert werden enthält.Such a heat-sensitive recording material is produced by a method, the method comprising at least the method steps as defined in claim 14.
Erfindungsgemäß diffundiert ein Anteil von 5 Gew.-% bis 50 Gew.-% der Silikonkomponente, vorzugsweise 6 bis 45 Gew.-%, besonders bevorzugt 7 bis 4 Gew.-%, ganz besonders bevorzugt 8 bis 32 Gew.-%, der aufgebrachten dritten Beschichtungszusammensetzung in die der aufgebrachten dritten Beschichtungszusammensetzung zugewandten Seite der wärmeempfindlichen Aufzeichnungsschicht (3) ein.According to the invention, a proportion of from 5% by weight to 50% by weight of the silicone component diffuses, preferably from 6 to 45% by weight, particularly preferably from 7 to 4% by weight, very particularly preferably from 8 to 32% by weight applied third coating composition in the side of the heat-sensitive recording layer (3) facing the applied third coating composition.
Aus den vorigen Absätzen ist herauszulesen, dass die Diffusionsschicht (4) ausgebildet ist durch flächiges Eindiffundieren von Teilen mindestens des Trennmittels aus der Beaufschlagung (5) in den zur Beaufschlagung (5) hin orientierten oberen Bereich der vor der Auftragung der Beaufschlagung (5) aufgetragenen wärmeempfindlichen Aufzeichnungsschicht (3). Zu diesem Zweck wird zunächst die wärmeempfindliche Aufzeichnungsschicht (3) aus der zweiten Beschichtungszusammensetzung entweder auf dem bahnförmigen Substrat (1) oder auf der zuvor aufgetragenen und fertig ausgebildeten Hohlkörperpigmente aufweisenden Zwischenschicht (2) aufgetragen und getrocknet. Auf die so fertig ausgebildete wärmeempfindliche Aufzeichnungsschicht (3) wird dann bevorzugt mittels Rasterwalzen-Auftragswerk oder mittels eines Fünf-Walzen-Stuhles eine zuvor vorbereitete dritte Beschichtungszusammensetzung aufgebracht. Diese dritte Beschichtungszusammensetzung enthält mindestens ein Trennmittel, wobei das Trennmittel erfindungsgemäß eine Silikonkomponente ist. Ganz besonders bevorzugt enthält die Rezeptur für die dritte Beschichtungszusammensetzung zusätzlich zur Silikonkomponente
- mindestens ein Haftvermittler als Komponente zur Manipulation der Trennkraftwirkung des Trennmittels,
- mindestens eine Substanz, die unter dem Einfluss energiereicher Strahlung, insbesondere ultravioletter Strahlung, vernetzend reagiert und
- mindestens ein Photoinitiator.
- at least one adhesion promoter as a component for manipulating the release force effect of the release agent,
- at least one substance which crosslinks under the influence of high-energy radiation, in particular ultraviolet radiation, and
- at least one photoinitiator.
In einer bevorzugten Ausgestaltung der vorliegenden Erfindung weist die Beschichtungszusammensetzung und/oder die Silikonkomponente eine Viskosität von 50 bis 1.000 mPas, vorzugsweise von 50 bis 100 mPas oder von 500 bis 1.000 mPas auf. Insbesondere bevorzugt ist es, wenn es sich bei der Silikonkomponente um eine wässrige Emulsion oder eine UV-vernetzende Silikonkomponente handelt, wobei die Vernetzung radikalisch (vorzugsweise unter Stickstoffschutzatmosphäre) oder kationisch erfolgt. Im Falle einer wässrigen Silikon-Emulsion kann die Beaufschlagung (5) durch Trocknung (und dabei ggf. stattfindender Vernetzung) der wässrigen Silikon-Emulsion ausgebildet werden, wobei die Trocknung vorzugsweise schonend in einem Temperaturbereich zwischen 40 und 60 °C erfolgt. Besonders bevorzugt ist es im Rahmen der vorliegenden Erfindung, wenn es sich um eine UV-vernetzende Silikonkomponente handelt, die radikalisch oder kationisch induziert (nach entsprechender Einstrahlung von energiereicher Strahlung (z.B. UV-Strahlung)) vernetzt. Im Rahmen der vorliegenden Erfindung ist es bevorzugt, wenn es sich bei der Silikonkomponente nicht um eine thermisch vernetzende Silikonkomponente oder um eine Silikonkomponente handelt, die in einem organischen Lösungsmittel gelöst ist.In a preferred embodiment of the present invention, the coating composition and / or the silicone component has a viscosity of from 50 to 1000 mPas, preferably from 50 to 100 mPas or from 500 to 1000 mPas. It is particularly preferred for the silicone component to be an aqueous emulsion or a UV-crosslinking silicone component, wherein the crosslinking takes place radically (preferably under a nitrogen-protective atmosphere) or cationically. In the case of an aqueous silicone emulsion, the application (5) can be formed by drying (and possibly taking place crosslinking) of the aqueous silicone emulsion, wherein the drying is preferably carried out gently in a temperature range between 40 and 60 ° C. In the context of the present invention, it is particularly preferred if it is a UV-crosslinking silicone component which crosslinks radically or cationically (after appropriate irradiation of high-energy radiation (for example UV radiation)). In the context of the present invention it is preferred if the silicone component is not a thermally crosslinking silicone component or a silicone component dissolved in an organic solvent.
Nach Auftragung der dritten Beschichtungszusammensetzung auf die fertig ausgebildete wärmeempfindliche Aufzeichnungsschicht (3) diffundiert ein Teil der dritten Beschichtungszusammensetzung in den oberen Bereich der ausgebildeten wärmeempfindlichen Aufzeichnungsschicht (3), wobei ein Anteil von 5 bis 50 Gew.-% der Gesamtheit der Trennmittel der dritten Beschichtungszusammensetzung, bevorzugt ein Anteil von 6 bis 45 Gew.-%, besonders bevorzugt ein Anteil von 7 bis 40 Gew.%, ganz besonders bevorzugt ein Anteil von 8 bis 32 Gew.-%, in den oberen Bereich der ausgebildeten wärmeempfindlichen Aufzeichnungsschicht (3) eindiffundiert. Durch Trocknung bzw. bei einer Strahlungsvernetzenden dritten Beschichtungszusammensetzung durch Bestrahlung des wärmeempfindlichen Aufzeichnungsmaterials einschließlich der aufgetragenen dritten Beschichtungszusammensetzung mit energiereicher Strahlung wird aus der dritten Beschichtungszusammensetzung dann die ein Trennmittel aufweisende Beaufschlagung (5) fertig ausgebildet, deren Verankerung mit der unter ihr gelegenen wärmeempfindlichen Aufzeichnungsschicht (3) durch den in die Aufzeichnungsschicht eindiffundierten Teil der dritten Beschichtungszusammensetzung gewährleistet wird. Der obere Bereich der wärmeempfindlichen Aufzeichnungsschicht (3) mit dem eindiffundierten Teil der dritten Beschichtungszusammensetzung bildet durch die oben benannte Trocknung bzw. Vernetzung dann die Diffusionsschicht (4) aus.After the third coating composition is applied to the finished thermosensitive recording layer (3), a part of the third coating composition diffuses into the upper portion of the formed thermosensitive recording layer (3), wherein a proportion of 5 to 50 wt% of the total of the releasing agents of the third coating composition Preferably, a proportion of 6 to 45 wt .-%, particularly preferably a proportion of 7 to 40 wt.%, Most preferably a proportion of 8 to 32 wt .-%, in the upper region of the formed thermosensitive recording layer (3) diffused. By drying or in a radiation-crosslinking third coating composition by irradiating the heat-sensitive recording material including the applied third coating composition with high-energy radiation from the third coating composition then the release agent having an adhesion (5) is formed, the anchoring of which with the below them thermosensitive recording layer (3 ) is ensured by the part of the third coating composition diffused into the recording layer. The upper portion of the heat-sensitive recording layer (3) having the diffused portion of the third coating composition then forms the diffusion layer (4) through the above-mentioned drying.
In verschiedenen Untersuchungen, die im Zusammenhang mit der hier vorliegenden Erfindung gemacht wurden, erkannten die Erfinder, dass für die Trennmittel aufweisende Beaufschlagung (5) eine flächenbezogene Masse in einem Bereich von 0,5 g/m2 bis 3 g/m2, bevorzugt 0,8 g/m2 bis 1,85 g/m2, besonders bevorzugt 0,85 g/m2 bis 1,35 g/m2, besonders geeignet sind, während gleichzeitig die Diffusionsschicht (4) als oberer Bereich in der wärmeempfindlichen Aufzeichnungsschicht (3) mit einer bevorzugten Dicke von 0,2 µm bis 0,8 µm, vorzugsweise 0,2 µm bis 0,5 µm in dem ein Teil der dritten Beschichtungszusammensetzung eindiffundiert ist mit einer bevorzugten rechnerischen flächenbezogenen Masse für die Diffusionsschicht (4) von 0,15 g/m2 bis 0,65 g/m2, als Optimum erkannt wurde.In various studies made in the context of the present invention, the inventors recognized that loading (5) having the release agent had a basis weight in a range of 0.5 g / m 2 to 3 g / m 2 0.8 g / m 2 to 1.85 g / m 2 , more preferably 0.85 g / m 2 to 1.35 g / m 2 , are particularly suitable, while at the same time the diffusion layer (4) as the upper region in the heat-sensitive recording layer (3) having a preferred thickness of 0.2 μm to 0.8 μm, preferably 0.2 μm to 0.5 μm, in which a part of the third coating composition is diffused with a preferred calculated area-related mass for the diffusion layer (4 ) from 0.15 g / m 2 to 0.65 g / m 2 , was recognized as optimum.
Zur Beeinflussung der Menge des eindiffundierenden Teils der dritten Beschichtungszusammensetzung in die wärmeempfindliche Aufzeichnungsschicht (3) kommt den Bindemitteln und Pigmenten, die in die wärmeempfindliche Aufzeichnungsschicht (3) bevorzugt eingebunden werden, eine wichtige Rolle zu. Zum einen hat es sich herausgestellt, dass es sehr hilfreich und somit bevorzugt ist, wenn die wärmeempfindliche Aufzeichnungsschicht (3) mindestens ein bevorzugt anorganisches Pigment enthält, ausgesucht aus der Liste, umfassend:
- Kaolinit (Kaolin)
- Magnesiumsilikathydrat (Talk)
- Aluminiumhydroxid
- Kalziumkarbonat
- Siliziumdioxid (Kieselsäure).
- Kaolinite (kaolin)
- Magnesium silicate hydrate (talc)
- aluminum hydroxide
- calcium carbonate
- Silica (silica).
Ganz besonders bevorzugt ist es, wenn das anorganische Pigment plättchenförmig ausgeformt ist, wie das beispielsweise bei Kaolinit und Talk der Fall ist. Kaolinit und Talk als anorganisches Pigment sind daher besonders bevorzugt. Insbesondere ist es ebenfalls bevorzugt wenn das anorganische, plättchenförmige Pigment (insbesondere Kaolinit und Talk) ein Aspektverhältnis (auch "Aspect ratio" oder "Shape-Faktor" genannt) von 5 bis 100, vorzugsweise von 15 bis 100, insbesondere bevorzugt von 20 bis 100 aufweist. In einer bevorzugten Ausgestaltung ist das Aspektverhältnis des anorganischen Pigments größer als 20. Bei dem Aspektverhältnis handelt es sich um den Quotienten zwischen dem Durchmesser und der Dicke des Plättchens des anorganischen Pigments vor dem Vermischen mit den weiteren Komponenten. Ein Aspektverhältnis von 20 bedeutet, dass der Durchmesser des Plättchens 20 mal größer ist, als die Dicke des Plättchens.It is very particularly preferred if the inorganic pigment is shaped like a platelet, as is the case, for example, with kaolinite and talc. Kaolinite and talc as the inorganic pigment are therefore particularly preferred. In particular, it is likewise preferred if the inorganic, platelet-shaped pigment (in particular kaolinite and talc) has an aspect ratio (also called "aspect ratio" or "shape factor") of from 5 to 100, preferably from 15 to 100, particularly preferably from 20 to 100 having. In a preferred embodiment, the aspect ratio of Inorganic pigment greater than 20. The aspect ratio is the quotient between the diameter and the thickness of the platelet of the inorganic pigment before mixing with the other components. An aspect ratio of 20 means that the diameter of the plate is 20 times larger than the thickness of the plate.
Hinsichtlich der Menge an Pigment in der wärmeempfindlichen Aufzeichnungsschicht (3) gilt ein auf das Gesamtgewicht der wärmeempfindlichen Aufzeichnungsschicht (3) bezogener Bereich von 8 bis 18 Gew.-% (atro) als besonders geeignet, der nach unten eingeengt wird durch die zunehmende Gefahr möglicher Thermo-Druckkopf-Ablagerungen und nach oben durch eine zunehmende Reduzierung der Empfindlichkeit gegenüber der Druckbild bewirkenden Wärme der Thermo-Druckköpfe.With respect to the amount of the pigment in the heat-sensitive recording layer (3), a range of from 8 to 18% by weight (atro), which is narrowed down by the increasing danger of possible, is considered to be particularly applicable to the total weight of the heat-sensitive recording layer (3) Thermal printhead deposits and upwards by an increasing reduction of the sensitivity to the print image causing heat of the thermal printheads.
Wegen der hydrophoben Eigenschaft von Silikon als Trennmittel in der dritten Beschichtungszusammensetzung, das in die wärmeempfindliche Aufzeichnungsschicht (3) eindiffundiert, gilt es als bevorzugt wenn die wärmeempfindliche Aufzeichnungsschicht (3) mindestens ein hydrophiles Bindemittel beinhaltet. Besonders bevorzugt sind dabei Bindemittel, ausgesucht aus der Liste, umfassend Polyvinylalkohol, Styrol-Butadien-Latex, Styrol-Acrylat-Latex, Stärke, Hydroxyethylcellulose, Methylcellulose, Ethylcellulose, Carboxymethylcellulose, Gelatine, Casein, vollständig verseifter Polyvinylalkohol, Ethylen-Vinylacetat-Copolymer, Polyvinylalkohol-co-ethylen Copolymer, Carboxylgruppe-modifizierter Polyvinylalkohol, Acetoacetylgruppe-modifizierter Polyvinylalkohol, Diacetogruppe-modifizierter Polyvinylalkohol, Silanolgruppe-modifizierter Polyvinylalkohol, Sulfonsäuregruppe-modifizierter Polyvinylalkohol, Epoxygruppe-modifizierter Polyvinylalkohol, Chitosan, Polyacrylsäure, Polymethacrylsäure, Polyacrylsäureester, Polymethacrylsäureester, Natriumpolyacrylat, Polyethylenterephthtalat, Polybutylenterephthalat, Acrylharz, Furanharz, Ketonharz, Oxybenzoylpolyester, Polyacetal, Polyethereketon, Polyethersulfon, Polyamid, Polyamidimid, Polyaminobismaleimid, Polymethylpenten, Polyphenylenoxid, Polyphenylensulfid, Polyphenylensulfon, Polysulfon, Polyallylat, Polyallylsulfon, Polybutadien, Polycarbonat, Polyethylen, Polypropylen, Polystyrol, Polyvinylacetat, Acrylnitril/Butadien-Copolymer und Acrylamid/Acrylsäureester/Methacrylsäure-Terpolymer.
Ganz besonders bevorzugt sind dabei Bindemittel, ausgesucht aus der Liste, umfassend:
- Ethylen-Vinylacetat-Copolymer
- Polyvinylalkohol
- Styrol-Butadien-Latex
- Styrol-Acrylat-Latex
- Stärke
- Methylcellulose
- Polyvinylalkohol-co-ethylen Copolymer.
Binders selected from the list are very particularly preferred, comprising:
- Ethylene-vinyl acetate copolymer
- polyvinyl alcohol
- Styrene-butadiene latex
- Styrene-acrylate latex
- Strength
- methylcellulose
- Polyvinyl alcohol-co-ethylene copolymer.
Es ist bevorzugt wenn das als Bindemittel eingesetzte Polyvinylalkohol einen Verseifungsgrad von mehr als 97 Mol.-%, vorzugsweise einen Verseifungsgrad von 97 Mol.-% bis etwa 99 Mol.-%, oder alternativ von mehr als 99 Mol.-%, und eine nach DIN 53015 an einer wässrigen Lösung mit 4 Masse-% bei 20 °C gemessene Viskosität von mehr als 7 mPas, vorzugsweise mehr als 12 mPas, besonders bevorzugt mehr als 15 mPas aufweist. Insbesondere bevorzugt handelt es sich um ein Polyvinylalkohol (PVA) 15-99, vorzugsweise mit einem Verseifungsgrad von 99 bis 99,8 Mol.-%, oder ein entsprechendes PVA mit höherem Verseifungsgrad und/oder höherer Viskosität als PVA 15-99.It is preferred that the polyvinyl alcohol used as the binder has a degree of saponification greater than 97 mole percent, preferably a saponification degree of from 97 mole percent to about 99 mole percent, or alternatively greater than 99 mole percent, and a according to DIN 53015 on an aqueous solution with 4 mass% at 20 ° C measured viscosity of more than 7 mPas, preferably more than 12 mPas, more preferably more than 15 mPas. Most preferably, it is a polyvinyl alcohol (PVA) 15-99, preferably having a degree of saponification of 99 to 99.8 mole%, or a corresponding higher saponification and / or higher PVA than PVA 15-99.
In einer bevorzugten Ausgestaltung der vorliegenden Erfindung handelt es sich bei dem Bindemittel um vernetzendes (selbst- oder fremdvernetzendes) und/oder modifiziertes Polyvinylalkohol, wobei der modifizierte Polyvinylalkohol vorzugsweise diacetonmodifizierter Polyvinylalkohol, silanolgruppenmodifizierter Polyvinylalkohol, carboxylgruppenmodifizierter Polyvinylalkohol und/oder ein Polyvinylalkohol-co-ethylen Copolymer ist, vorzugsweise diacetonmodifizierter Polyvinylalkohol oder silanolgruppenmodifizierter Polyvinylalkohol und/oder ein Polyvinylalkohol-co-ethylen Copolymer.In a preferred embodiment of the present invention, the binder is crosslinking (self or externally crosslinking) and / or modified polyvinyl alcohol, wherein the modified polyvinyl alcohol is preferably diacetone-modified polyvinyl alcohol, silanol group-modified polyvinyl alcohol, carboxyl group-modified polyvinyl alcohol and / or a polyvinyl alcohol-co-ethylene copolymer is, preferably diacetone-modified polyvinyl alcohol or silanol group-modified polyvinyl alcohol and / or a polyvinyl alcohol-co-ethylene copolymer.
Insbesondere wenn als Bindemittel ein nicht selbstvernetzender Polyvinylalkohol eingesetzt wird, ist es in einer bevorzugten Ausgestaltung der vorliegenden Erfindung bevorzugt, wenn die wärmeempfindliche Aufzeichnungsschicht (3) mindestens ein Vernetzungshilfsmittel enthält, ausgesucht aus der Liste, umfassend: Borsäure, Polyamin, Epoxyharz, Dialdehyd, Formaldehydoligomere, Epiochlorhydrinharz, Adipinsäuredihydrazid, Dimethylharnstoff, Melaminformaldehyd, allein oder in Abmischung untereinander.In particular, when a non-self-crosslinking polyvinyl alcohol is used as the binder, in a preferred embodiment of the present invention, it is preferred that the heat-sensitive recording layer (3) contains at least one crosslinking aid selected from the list comprising: boric acid, polyamine, epoxy resin, dialdehyde, formaldehyde oligomers , Epiochlorohydrin resin, Adipic dihydrazide, dimethylurea, melamine formaldehyde, alone or in admixture with each other.
In einer Ausgestaltung der vorliegenden Erfindung gilt Ethylen-Vinylacetat-Copolymer als alleiniges Bindemittel oder in Verbindung mit Polyvinylalkohol als besonders bevorzugte Bindemittel, das, bezogen auf das Gesamtgewicht der wärmeempfindlichen Aufzeichnungsschicht (3), in einem Bereich von 10 bis 20 Gew.-% in die wärmeempfindliche Aufzeichnungsschicht (3) eingebunden ist.In one embodiment of the present invention is ethylene-vinyl acetate copolymer as the sole binder or in combination with polyvinyl alcohol as a particularly preferred binder, based on the total weight of the heat-sensitive recording layer (3), in a range of 10 to 20 wt .-% in the heat-sensitive recording layer (3) is incorporated.
Das vorgeschlagene Verfahren sieht das Vorbereiten einer zweiten Beschichtungszusammensetzung zur Ausbildung einer vorderseitig des bahnförmigen Substrats (1) angeordneten wärmeempfindlichen Aufzeichnungsschicht (3) vor, wobei sich hierfür in einem besonderen Maße die Benutzung von Behälterwaagen zur genauen Zuführung und Dosierung von Schüttkomponenten und flüssigen Komponenten anbieten.The proposed method provides for the preparation of a second coating composition for forming a heat-sensitive recording layer (3) arranged on the front side of the web-shaped substrate (1), whereby the use of container scales for the precise feeding and metering of bulk components and liquid components is particularly suitable for this purpose.
Die zur Ausbildung der wärmeempfindlichen Aufzeichnungsschicht (3) vorgesehene zweite Beschichtungszusammensetzung umfasst bevorzugt mindestens einen (Farb-)Entwickler, ausgesucht aus der Liste, umfassend:
- 4-[(4-(1-methylethoxy)phenyl)sulfonyl]-Phenol,
- N-(p-toluensulphonyl)-N'-(3p-toluensulphonyl-Oxy-phenyl)-harnstoff,
- Diisopropyldiphenol,
- 4,4-Sulfonyldiphenol und
- N-[2-(3-Phenylureido)phenyl]benzensulfonamid,
- N-(p-toluensulphonyl)-N'-(3-p-toluensulphonyl-Oxy-phenyl)-harnstoff
und - N-[2-(3-Phenylureido)phenyl]benzensulfonamid
- 4 - [(4- (1-methylethoxy) phenyl) sulfonyl] -phenol,
- N- (p-toluensulphonyl) -N '- (3p-toluensulphonyl-oxy-phenyl) -urea,
- Diisopropyldiphenol,
- 4,4-sulfonyldiphenol and
- N- [2- (3-phenylureido) phenyl] benzenesulfonamide,
- N- (p-toluensulphonyl) -N '- (3-p-toluensulphonyl-oxy-phenyl) -urea
and - N- [2- (3-phenylureido) phenyl] benzenesulfonamide
Das wärmeempfindliche Aufzeichnungsmaterial weist als Farbstoffvorläufer in der zweiten Beschichtungszusammensetzung zur Ausbildung der wärmeempfindlichen Aufzeichnungsschicht (3) bevorzugt solche auf, die ausgesucht sind aus der Liste, umfassend 3-Diethylamino-6-methyl-7-anilinofluoran, 3-Dibutylamino-6-methyl-7-anilinofluoran, 3-(N-Methyl-N-propyl)amino-6-methyl-7-anilinofluoran, 3-(N-Ethyl-N-isoamyl)amino-6-methyl-7-anilinofluoran, 3-(N-Methyl-N-cyclohexyl)amino-6-methyl-7-anilinofluoran, 3-(N-Ethyl-N-tolyl)amino-6-methyl-7-anilinofluoran, 3-(N-Ethyl-N-tetrahydrofuryl)amino-6-methyl-7-anilinofluoran, 3-Di-n-pentyl-amino-6-methyl-7-anilinofluoran, 3-Di-n-butylamino-7-(2-chloranilino)fluoran, 3-Diethylamino-7-(2-chloranilino)fluoran, 3-Diethylamino-6-methyl-7-xylidinofluoran, 3-Diethylamino-7-(2-carbomethoxyphenylamino)fluoran, 3-(N-Cyclopentyl-N-ethyl)amino-6-methyl-7-anilinofluoran, 3(N-Ethyl-4-toluidino)6-methyl-7-(4-toluidino)fluoran, 3-(N-Methyl-N-tetrahydrofurfuryl)amino-6-methyl-7-anilinofluoran), 3-Pyrrolidino-6-methyl-7-anilinofluoran, 3-Pyrrolidino-6-methyl-7-(4-n-butyl-phenylamino)fluoran und 3-Piperidino-6-methyl-7-anilinofluoran. Besonders bevorzugt solche, die ausgesucht sind aus der Liste, umfassend 3-Diethylamino-6-methyl-7-anilinofluoran, 3-Dibutylamino-6-methyl-7-anilinofluoran, 3-(N-Methyl-N-propyl)amino-6-methyl-7-anilinofluoran, 3-(N-Ethyl-N-isoamyl)amino-6-methyl-7-anilinofluoran, 3-(N-Methyl-N-cyclohexyl)amino-6-methyl-7-anilinofluoran, 3-(N-Ethyl-N-tolyl)amino-6-methyl-7-anilinofluoran und 3-(N-Ethyl-N-tetrahydrofuryl)amino-6-methyl-7-anilinofluoran. Ganz besonders bevorzugt ist dabei 3-Dibutylamino-6-methyl-7-anilinofluoran - auch bekannt als ODB-2.The thermosensitive recording material preferably has, as a dye precursor in the second coating composition for forming the thermosensitive recording layer (3), those selected from the list comprising 3-diethylamino-6-methyl-7-anilinofluoran, 3-dibutylamino-6-methyl 7-anilinofluoran, 3- ( N -methyl- N- propyl) amino-6-methyl-7-anilinofluoran, 3- ( N- ethyl-N-isoamyl) amino-6-methyl-7-anilinofluoran, 3- ( N -Methyl- N- cyclohexyl) amino-6-methyl-7-anilinofluoran, 3- ( N- ethyl- N- tolyl) amino-6-methyl-7-anilinofluoran, 3- ( N- ethyl- N- tetrahydrofuryl) -amino -6-methyl-7-anilinofluoran, 3-di-n-pentyl-amino-6-methyl-7-anilinofluoran, 3-di-n butylamino-7- (2-chloroanilino) fluoran, 3-diethylamino-7- (2-chloroanilino) fluoran, 3-diethylamino-6-methyl-7-xylidinofluoran, 3-diethylamino-7- (2-carbomethoxyphenylamino) fluoran, 3- ( N -cyclopentyl- N- ethyl) amino-6-methyl-7 anilinofluoran, 3 (N-ethyl-4-toluidino) 6-methyl-7- (4-toluidino) fluoran, 3- ( N -methyl-N-t etrahydrofurfuryl) amino-6-methyl-7-anilinofluoran), 3-pyrrolidino-6-methyl-7-anilinofluoran, 3-pyrrolidino-6-methyl-7- (4-n-butyl-phenylamino) -fluoran and 3-piperidino- 6-methyl-7-anilinofluoran. Particularly preferred are those selected from the list comprising 3-diethylamino-6-methyl-7-anilinofluoran, 3-dibutylamino-6-methyl-7-anilinofluoran, 3- ( N -methyl- N- propyl) amino-6 -methyl-7-anilinofluoran, 3- ( N- ethyl- N- isoamyl) amino-6-methyl-7-anilinofluoran, 3- ( N -methyl- N- cyclohexyl) amino-6-methyl-7-anilinofluoran, 3 - ( N- ethyl- N- tolyl) amino-6-methyl-7-anilinofluoran and 3- ( N- ethyl- N- tetrahydrofuryl) amino-6-methyl-7-anilinofluoran. Very particular preference is given to 3-dibutylamino-6-methyl-7-anilinofluoran - also known as ODB-2.
Die zweite Beschichtungszusammensetzung zur Ausbildung der wärmeempfindlichen Aufzeichnungsschicht (3) kann zur Erhöhung der thermischen Ansprechempfindlichkeit mindestens einen Sensibilisator, ausgesucht aus der Liste umfassend N-Hydroxymethylstearinsäureamind, N-Stearylstearinsäureamid, Ethylenbisstearinsäureamind, N-Stearylharnstoff, Benzyl-2-naphthylether, m-Terpenyl, 4-Benzybiphenyl, 1,2-Bis(3-methylphenoxy)ethan, 1,2-Diphenoxyethan, 2,2'-Bis(4-methoxyphenoxy) diethylether, α,α'-Diphenoxyxylen, Bis(4-methoxyphenyl)ether, Diphenyladipat, Dibenzyloxalat, Bis(4-chlorbenzyl)oxalatester, Dibenzylterephthtalat, Benzylparaben, Phenylbenzolsulfonatester, 4,4'-Diallyloxydiphenylsulfon, Diphenylsulfon, 4-Acetylacetophenon, Acetoessigsäureanilide, Fettsäureanilide, Salicylsäureanilid, Stearinsäureamid, Dimethylsulfon, 2-(2H-benzotriazol-2-yl)-p-cresol und Dimethylterephtalat.Bevorzugt enthält die zweite Beschichtungszusammensetzung mindestens einen Sensibilisator, ausgesucht aus der Liste umfassend Benzyl-2-naphthylether, 1,2-Bis(3-methylphenoxy)ethan und 1,2-Diphenoxyethan. Entsprechend einer ersten bevorzugten Ausführung werden diese Sensibilisatoren jeweils allein, das bedeutet, nicht in Kombination mit den anderen genannten Sensibilisatoren aus der vorstehenden Liste, eingesetzt. Entsprechend einer zweiten, gleichsam bevorzugten Ausführung werden mindestens zwei Sensibilisatoren, ausgesucht aus der vorstehenden Liste, in der zweiten Beschichtungszusammensetzung eingebunden.The second coating composition for forming the thermosensitive recording layer (3) may be at least one sensitizer selected from the list consisting of N-hydroxymethylstearic acid amine, N- stearylstearic acid amide, ethylenebisstearic acid amine, N- stearylurea, benzyl-2-naphthyl ether, m -terpenyl, to increase the thermal responsiveness. 4-benzylbiphenyl, 1,2-bis (3-methylphenoxy) ethane, 1,2-diphenoxyethane, 2,2'-bis (4-methoxyphenoxy) diethyl ether, α, α'-diphenoxyxylene, bis (4-methoxyphenyl) ether, Diphenyl adipate, dibenzyl oxalate, bis (4-chlorobenzyl) oxalate ester, dibenzyl terephthalate, Benzylparaben, phenylbenzenesulfonate ester, 4,4'-diallyloxydiphenylsulfone, diphenylsulfone, 4-acetylacetophenone, acetoacetanilides, fatty acid anilides, salicylic anilide, stearic acid amide, dimethylsulfone, 2- (2H-benzotriazol-2-yl) -p-cresol, and dimethylterephthalate. Preferably, the second coating composition contains at least one sensitiser selected from the list comprising benzyl 2-naphthyl ether, 1,2-bis (3-methylphenoxy) ethane and 1,2-diphenoxyethane. According to a first preferred embodiment, these sensitizers are each used alone, that is, not in combination with the other sensitisers mentioned above. According to a second, as it were preferred embodiment, at least two sensitisers selected from the above list are included in the second coating composition.
Als Beschichtungsvorrichtung zum Auftrag der zweiten Beschichtungszusammensetzung zur Ausbildung der wärmeempfindlichen Aufzeichnungsschicht (3) bieten sich insbesondere Rollrakelstreichwerk, Messerstreichwerk, Vorhangbeschichter oder Luftbürste an. Die flächenbezogene Masse der wärmeempfindlichen Aufzeichnungsschicht (3) einschließlich der bevorzugten rechnerischen flächenbezogenen Masse für die Diffusionsschicht (4) von 0,15 g/m2 bis 0,65 g/m2 liegt dabei zwischen 2,4 bis 6,2 g/m2, bevorzugt zwischen 2,5 und 6,2 g/m2 und noch besser zwischen 2,5 und 4,9 g/m2.As a coating device for applying the second coating composition for forming the heat-sensitive recording layer (3), in particular, offer a roll doctor coater, knife coater, curtain coater or air brush. The basis weight of the heat-sensitive recording layer (3), including the preferred theoretical basis weight for the diffusion layer (4) of 0.15 g / m 2 to 0.65 g / m 2 is between 2.4 to 6.2 g / m 2 , preferably between 2.5 and 6.2 g / m 2, and more preferably between 2.5 and 4.9 g / m 2 .
Insbesondere zur Verbesserung sowohl der dynamischen wie auch der statischen Empfindlichkeit des hier vorgeschlagenen wärmeempfindlichen Aufzeichnungsmaterials weist das hier vorgeschlagene Aufzeichnungsmaterial bevorzugt eine zwischen dem bahnförmigen Substrat (1) und der wärmeempfindlichen Aufzeichnungsschicht (3) positionierte Hohlkörperpigmente aufweisende Zwischenschicht (2) auf, wie es schon weiter vorne innerhalb der Beschreibung ausgeführt wurde. Die hohe Bedeutung der organischen Hohlkörperpigmente in die Zwischenschicht (2) wird damit begründet, dass solche organischen Pigmente in einem besonderen Maße einem hohen Wärmereflexionsvermögen der Zwischenschicht (2) zuträglich sind. Die Hohlkörperpigmente weisen in ihrem Inneren Luft auf, die einen guten Wärmeisolator darstellt. Die so als Wärmereflexionsschicht optimierte Zwischenschicht (2) erhöht insofern ganz gezielt das Ansprechverhalten der Aufzeichnungsschicht (3) gegenüber Wärme.In particular, in order to improve both the dynamic and the static sensitivity of the heat-sensitive recording material proposed here, the recording material proposed here preferably has an intermediate layer (2) positioned between the sheet-shaped substrate (1) and the heat-sensitive recording layer (3), as already described was executed in the front of the description. The high importance of the organic hollow body pigments in the intermediate layer (2) is based on the fact that such organic pigments are to a particular extent a high heat reflectivity of the intermediate layer (2) conducive. The hollow body pigments have in their interior air, which is a good heat insulator. The thus optimized as a heat reflection layer intermediate layer (2) increases so far specifically the response of the recording layer (3) to heat.
Neben den organischen Hohlkörperpigmenten weist die Zwischenschicht (2) ganz besonders bevorzugt auch anorganische Pigmente auf, wobei die anorganischen Pigmente einzeln oder in Kombination untereinander ausgesucht aus der Liste, umfassend: natürliches wie kalziniertes Kaolin, Siliziumoxid und hier besonders Bentonit, Kalziumkarbonat sowie Aluminiumhydroxid und hier besonders Böhmit. Der in der wärmeempfindlichen Aufzeichnungsschicht (3) die farbbildende Reaktion der Farbstoffvorläufer mit den (Farb-)Entwicklern auslösende Thermokopf bewirkt ein Schmelzen von wachsartigen Bestandteilen in der Aufzeichnungsschicht (3). Die bevorzugt eingebundenen anorganischen Pigmente der Zwischenschicht (2) bewirken auch eine Absorption dieser Schmelze. Es ist dabei besonders vorteilhaft, wenn die anorganischen Pigmente der Zwischenschicht (2) eine Ölabsorption von mindestens 80 cm3/100 g und noch besser von 100 cm3/100 g, bestimmt nach der japanischen Norm JIS K 5101, aufweisen. Diese Anforderung erfüllen die oben benannten anorganischen Pigmente.In addition to the organic hollow-body pigments, the intermediate layer (2) very particularly preferably also comprises inorganic pigments, the inorganic pigments being selected individually or in combination with one another from the list comprising: natural and calcined kaolin, silicon oxide and in particular bentonite, Calcium carbonate and aluminum hydroxide and here especially boehmite. The thermal head initiating the color-forming reaction of the dye precursors with the (color) developers in the heat-sensitive recording layer (3) causes the wax-like components to melt in the recording layer (3). The preferred incorporated inorganic pigments of the intermediate layer (2) also cause absorption of this melt. It is particularly advantageous if the inorganic pigments of the intermediate layer (2) an oil absorption of at least 80 cm3 / 100 g, and more preferably 100 cm3 / 100 g, determined according to the Japanese standard JIS K 5101, have. This requirement is met by the above-mentioned inorganic pigments.
Das Mengenverhältnis zwischen der Gesamtheit organischer Hohlkörperpigmente und der Gesamtheit anorganischer Pigmente innerhalb der Zwischenschicht (2) ist ein Kompromiss der von den beiden Pigmentarten bewirkten Effekte, der besonders vorteilhaft gelöst wird, wenn die Pigmentmischung zu 5 bis 30 Gew.-% bzw. besser zu 8 bis 20 Gew.-% aus organischem und zu 95 bis 70 Gew.-% bzw. besser zu 92 bis 80 Gew.-% aus anorganischem Pigment besteht. Pigmentmischungen aus unterschiedlichen organischen und/oder aus unterschiedlichen anorganischen Pigmenten sind vorstellbar.The ratio between the total of organic hollow body pigments and the total of inorganic pigments within the intermediate layer (2) is a compromise of the effects caused by the two types of pigments, which is particularly advantageously solved if the pigment mixture to 5 to 30 wt .-% or better to 8 to 20 wt .-% of organic and 95 to 70 wt .-% or better to 92 to 80 wt .-% of inorganic pigment. Pigment mixtures of different organic and / or different inorganic pigments are conceivable.
Neben den organischer Hohlkörperpigmenten und gegebenenfalls auch anorganischen Pigmenten enthält die Zwischenschicht (2) mindestens ein Bindemittel bevorzugt auf Basis eines synthetischen Polymers, wobei beispielsweise Styrol-Butadien-Latex besonders gute Ergebnisse liefert. Die Verwendung eines synthetischen Bindemittels unter Beimischung mindestens eines natürlichen Polymers, wie besonders bevorzugt Stärke, stellt eine besonders geeignete Ausführungsform dar. Im Rahmen von Versuchen mit verschiedenen organischen und anorganischen Pigmenten wurde ferner festgestellt, dass mit einem Bindemittel-Pigment-Verhältnis innerhalb der Zwischenschicht zwischen 3:7 und 1:9, jeweils bezogen auf Gew.-%, eine besonders geeignete Ausführungsform vorliegt.In addition to the organic hollow-body pigments and optionally also inorganic pigments, the intermediate layer (2) contains at least one binder, preferably based on a synthetic polymer, with styrene-butadiene latex, for example, giving particularly good results. The use of a synthetic binder in admixture with at least one natural polymer, more preferably starch, is a particularly suitable embodiment. In experiments with various organic and inorganic pigments, it has further been found that with a binder to pigment ratio within the interlayer 3: 7 and 1: 9, in each case based on wt .-%, a particularly suitable embodiment is present.
Bevorzugt wird die erste Beschichtungszusammensetzung zur Ausbildung der Zwischenschicht (2) mittels eines egalisierenden Streichverfahrens aufgebracht, ausgesucht aus der Liste, umfassend: Walzenstreichwerk, Streichmesser- und (Roll-)Rakel-streichwerk. Gerade bei der Verwendung eines dieser genannten Streichverfahren kann die Zwischenschicht (2) einen positiven Beitrag zur Egalisierung der Substratoberfläche leisten, womit sich die aufzubringende Menge für die zweite Beschichtungszusammensetzung zur Ausbildung der wärmeempfindlichen Aufzeichnungsschicht (3) reduziert. Die anschließende Trocknung der Beschichtungszusammensetzung zur Ausbildung der Zwischenschicht (2) geschieht üblicherweise durch Zufuhr von Wärme, wie es durch Heißluft-Schwebetrockner oder auch Kontakttrockner geschieht. Bewährt ist auch eine Kombination aus Heißluft-Schwebetrockner und Kontakttrockner. Für die flächenbezogene Masse der Zwischenschicht (2) hat sich ein bevorzugter Bereich zwischen 5 und 20 g/m2 und noch besser zwischen 7 und 12 g/m2 bewährt.Preferably, the first coating composition for forming the intermediate layer (2) is applied by means of a leveling coating process selected from the list comprising: roller coater, doctor blade and doctor blade coater. Especially when using one of these mentioned coating methods, the intermediate layer (2) can make a positive contribution to the leveling of the substrate surface, which reduces the amount to be applied for the second coating composition for forming the heat-sensitive recording layer (3). Subsequent drying of the coating composition to form the Intermediate layer (2) is usually done by supplying heat, as done by hot-air floating dryer or contact dryer. Also proven is a combination of hot-air floatation dryer and contact dryer. For the basis weight of the intermediate layer (2), a preferred range between 5 and 20 g / m 2 and even better between 7 and 12 g / m 2 has proven.
In einer Ausgestaltung der vorliegenden Erfindung wird statt der Hohlkörperpigmente aufweisenden Zwischenschicht (2) eine Zwischenschicht zwischen dem bahnförmigen Substrat (1) und der wärmeempfindlichen Aufzeichnungsschicht (3) verwendet, die keine Hohlkörperpigmente sondern anorganische Pigmente aufweist, wobei die anorganischen Pigmente vorzugsweise einzeln oder in Kombination untereinander ausgesucht sind aus der Liste, umfassend: natürliches oder kalziniertes Kaolin, Siliziumoxid und hier besonders Bentonit, Kalziumkarbonat sowie Aluminiumhydroxid und hier besonders Böhmit.In one embodiment of the present invention, instead of the hollow body pigment-containing intermediate layer (2), an intermediate layer is used between the sheet-shaped substrate (1) and the heat-sensitive recording layer (3) which contains no hollow body pigments but inorganic pigments, the inorganic pigments preferably being used singly or in combination selected among themselves from the list, comprising: natural or calcined kaolin, silica and here especially bentonite, calcium carbonate and aluminum hydroxide and here especially boehmite.
Auch wenn nicht auf Papier als bahnförmiges Substrat (1) beschränkt, ist Papier und hier speziell ein nicht oberflächenbehandeltes Streichrohpapier das Substrat, das sich am Markt auch mit Blick auf die gute Umweltverträglichkeit wegen der guten Recyclingfähigkeit durchgesetzt hat und das im Sinne der Erfindung bevorzugt ist. Unter einem nicht oberflächenbehandelten Streichrohpapier ist ein nicht in einer Leimpresse oder in einer Beschichtungsvorrichtung behandeltes Streichrohpapier zu verstehen. Für die Erfindung sind im gleichen Maße Folien beispielsweise aus Polypropylen, Polyolefin und mit Polyolefin beschichtete Papiere als bahnförmiges Substrat (1) möglich, ohne dass eine solche Ausführung ausschließenden Charakter aufweist.Although not limited to paper as a web-shaped substrate (1), paper and especially a non-surface treated base paper is the substrate that has prevailed on the market with regard to good environmental compatibility because of good recyclability and is preferred for the purposes of the invention , A non-surface treated base paper is to be understood as meaning a base paper which has not been treated in a size press or in a coating device. For the invention, films of polypropylene, polyolefin and polyolefin-coated papers, for example, are possible to the same extent as a web-shaped substrate (1), without such an embodiment having an exclusive character.
Die in der Beschreibung und in den Ansprüchen gemachten Angaben zur flächenbezogenen Masse, zu Gew.-% (Gewichts-%) und zu Gew.-Teilen (GewichtsTeilen) beziehen sich jeweils auf das "atro"-Gewicht, d.h. absolut trockene Gewichtsteile. In den Ausführungen zu den organischen Pigmenten der pigmenthaltigen Zwischenschicht sind die diesbezüglichen Zahlenangaben berechnet aus dem "lutro"-Gewicht, d.h. lufttrockene Gewichtsteile, abzüglich des Gewichtsanteils von Wasser um und im Inneren der Pigmente in ihrer Lieferform.The measures given in the specification and in the claims for basis weight,% by weight (% by weight) and parts by weight (parts by weight) are each based on the "atro" weight, i. absolutely dry parts by weight. In the comments on the organic pigments of the pigment-containing interlayer, the relevant figures are calculated from the "lutro" weight, i. air-dry parts by weight, minus the proportion by weight of water around and inside the pigments in their form of delivery.
Ein weiterer Aspekt der vorliegenden Erfindung ist die Verwendung eines erfindungsgemäßen wärmeempfindlichen Aufzeichnungsmaterials als selbstklebendes Ticket, selbstklebende Eintrittskarte, selbstklebenden Kaufbeleg, selbstklebendes Etikett oder selbstklebende Eintrittskarten.Another aspect of the present invention is the use of a heat-sensitive recording material according to the invention as a self-adhesive ticket, self-adhesive ticket, self-adhesive proof of purchase, self-adhesive label or self-adhesive tickets.
Ein weiterer Aspekt der vorliegenden Erfindung ist ein wärmeempfindliches Aufzeichnungsmaterial hergestellte nach einem erfindungsgemäßen Verfahren.Another aspect of the present invention is a thermosensitive recording material prepared by a method of the present invention.
Im Rahmen der vorliegenden Erfindung werden vorzugsweise mehrere der vorstehend als bevorzugt bezeichneten Aspekte gleichzeitig verwirklicht; insbesondere bevorzugt sind die sich aus den beigefügten Ansprüchen ergebenden Kombinationen solcher Aspekte und der entsprechenden Merkmale.In the context of the present invention, preferably several of the aspects described above as being preferred are realized simultaneously; Especially preferred are the combinations of such aspects and the corresponding features resulting from the appended claims.
Die Erfindung soll anhand der folgenden Beispiele weiter verdeutlicht werden:The invention will be further clarified by the following examples:
Es werden verschiedene wärmeempfindliche Aufzeichnungsmaterialien mit unterschiedlichen flächenbezogenen Massen von 2,4 g/m2, 2,5, g/m2, 3,0 g/m2, 4,0 g/m2, 5,0 g/m2 und 6,2 g/m2 hergestellt. Als bahnförmiges Substrat (Trägerpapier) wird das in Beispiel 2 beschriebene Trägerpapier mit einer flächenbezogenen Masse von 64 g/m2 verwendet. Die für die diese wärmeempfindliche Aufzeichnungsschicht (3) verwendeten wässrigen Streichmassen enthalten die folgenden Komponenten nach der in Tabelle 1 wiedergegebenen Rezepturen:
Auf diese wärmeempfindliche Aufzeichnungsschicht wird jeweils mittels Rollrakel-Streicheinrichtung eine wärmeempfindliche Aufzeichnungsschicht mit einer flächenbezogenen Masse von 2,5 g/m2 aufgetragen. Die dazu verwendete wässrige Streichmasse enthält die folgenden Komponenten nach der in Tabelle 2 wiedergegebenen Rezeptur.Onto this heat-sensitive recording layer, a heat-sensitive recording layer having a basis weight of 2.5 g / m 2 is applied in each case by means of a roller doctor coater. The aqueous coating composition used for this purpose contains the following components according to the recipe given in Table 2.
Als bahnförmiges Substrat wird auf einer Langsieb-Papiermaschine aus gebleichten und gemahlenen Laub- und Nadelholzzellstoffen unter Zugabe von, bezogen auf den Gesamtfeststoffgehalt (atro) der der Papiermaschine zugeführten Pulpe, 0,8 Gew.-% AKD-Leim als Masseleimung sowie weiterer üblicher Beischlagstoffe ein Trägerpapier mit einer flächenbezogenen Masse von 64 g/m2 hergestellt.As a web-shaped substrate is on a fourdrinier paper machine from bleached and ground deciduous and softwood pulps with the addition of, based on the total solids content (atro) of the pulp fed pulp, 0.8 wt .-% AKD glue as engine sizing and other conventional admixtures a backing paper having a basis weight of 64 g / m 2 made.
Auf der Vorderseite wird eine kalziniertes Kaolin als Pigment, Styrol-Butadien-Latex als Bindemittel und neben weiteren Hilfsmitteln Stärke als Cobinder aufweisende Zwischenschicht mit einer flächenbezogenen Masse von 9 g/m2 unter Nutzung eines Streichmessers aufgebracht.On the front of a calcined kaolin pigment, styrene-butadiene latex as a binder and, in addition to other aids starch cobinder-containing intermediate layer having a basis weight of 9 g / m 2 applied using a doctor blade.
Auf diese pigmentierte Zwischenschicht wird mittels Rollrakel-Streicheinrichtung eine wärmeempfindliche Aufzeichnungsschicht mit einer flächenbezogenen Masse von 2,5 g/m2 aufgetragen. Die dazu verwendete wässrige Streichmasse enthält die folgenden Komponenten nach der in Tabelle 2 wiedergegebenen Rezeptur:
Weitere nicht prozentual und bezogen auf das Gesamtgewicht in Gew.-% (atro) angegebene Bestandteile der wärmeempfindlichen Aufzeichnungsschicht sind unter anderem Dispergiermittel, Entschäumer, optische Aufheller, Verdicker, Wachse und Vernetzer.Other components of the heat-sensitive recording layer which are not stated in percent and based on the total weight in% by weight (atro) include dispersants, defoamers, optical brighteners, thickeners, waxes and crosslinkers.
Nach der Auftragung der wärmeempfindlichen Aufzeichnungsschicht wird diese getrocknet und geglättet, wobei hier ein Wert von 500 Bekk/Sek (DIN ISO 53107) für die vorderseitige Oberflächenglätte gemessen wird.After the application of the heat-sensitive recording layer, it is dried and smoothed, in which case a value of 500 Bekk / sec (DIN ISO 53107) for the front surface smoothness is measured.
Das hergestellte bahnförmige Substrat mit Zwischenschicht und wärmeempfindlicher Aufzeichnungsschicht wird vorderseitig (auf die wärmeempfindliche Aufzeichnungsschicht) mittels Rasterwalzen-Auftragswerk mit einem radikalisch härtenden Standard-UV-Silikonsystem beschichtet. Das dazu verwendete lösungsmittelfreie Evonik-Standard-Silikonsystem enthält eine in Tabelle 3 wiedergegebene Rezeptur. Der Silikonauftrag beträgt dabei ca. 1,2 g/m2.
Die so erhaltene Trennmittel aufweisende Beaufschlagung wird mit einer UV-Lampe (80 W/cm) unter einer Schutzgasatmosphäre aus Stickstoff ausgehärtet.The thus obtained release agent is cured with a UV lamp (80 W / cm) under a protective gas atmosphere of nitrogen.
Man erhält ein erfindungsgemäßes wärmeempfindliches Aufzeichnungsmaterial, bei dem sich die Trennmittel aufweisende Beaufschlagungs-Schicht nicht von der wärmeempfindlichen Aufzeichnungsschicht löst. Auch nach einer Lagerung von 30 Tagen lässt sich die Trennmittel aufweisende Beaufschlagungs-Schicht nicht von der wärmeempfindlichen Aufzeichnungsschicht lösen. Das hergestellte Aufzeichnungsmaterial weist eine gute Sensitivität auf.A heat-sensitive recording material according to the invention is obtained in which the application layer comprising the release agents does not detach from the heat-sensitive recording layer. Even after storage for 30 days, the release agent-containing coating layer can not be detached from the heat-sensitive recording layer. The produced recording material has a good sensitivity.
Beispiel 2 wurde wiederholt, außer dass die Zusammensetzung der pigmentierte Zwischenschicht geändert wurde. Die geänderte Zusammensetzung der pigmentierten Zwischenschicht ist in Tabelle 4 angegeben.
Man erhält ein erfindungsgemäßes wärmeempfindliches Aufzeichnungsmaterial, bei dem sich die Trennmittel aufweisende Beaufschlagungs-Schicht nicht von der wärmeempfindlichen Aufzeichnungsschicht löst. Auch nach einer Lagerung von 30 Tagen lässt sich die Trennmittel aufweisende Beaufschlagungs-Schicht nicht von der wärmeempfindlichen Aufzeichnungsschicht lösen. Das hergestellte Aufzeichnungsmaterial weist eine sehr gute Sensitivität auf.A heat-sensitive recording material according to the invention is obtained in which the application layer comprising the release agents does not detach from the heat-sensitive recording layer. Even after storage for 30 days, the release agent-containing coating layer can not be detached from the heat-sensitive recording layer. The produced recording material has a very good sensitivity.
Auf die Rückseite des bahnförmigen Substrats der in Beispiel 2 hergestellten wärmeempfindlichen Aufzeichnungsschicht wurde durch Auftragen eines Polyacrylharzklebers eine Klebstoffschicht hergestellt.On the back side of the sheet-shaped substrate of the heat-sensitive recording layer prepared in Example 2, an adhesive layer was formed by applying a polyacrylic resin adhesive.
Das bahnförmige Substrat wurde anschließend aufgerollt, sodass die Klebstoffschicht auf der ein Trennmittel aufweisenden Beaufschlagungs-Schicht liegt. Auch nach einer Lagerung von 30 Tagen lassen sich einzelne Lagen des wärmeempfindlichen Aufzeichnungsmaterials abrollen, ohne dass sich die Trennmittel aufweisende Beaufschlagungs-Schicht von der wärmeempfindlicher Aufzeichnungsschicht löst oder dass Rückstände der Klebstoffschicht auf der ein Trennmittel aufweisenden Beaufschlagungs-Schicht verbleiben.The web-shaped substrate was then rolled up, so that the adhesive layer is on the release agent layer having a release agent. Even after storage for 30 days, individual layers of the thermosensitive recording material can be unrolled without dissipating the releasing layer having the releasing agent from the thermosensitive recording layer or leaving residues of the adhesive layer on the impurity-containing impingement layer.
Auf die Rückseite des bahnförmigen Substrats der in Beispiel 3 hergestellten wärmeempfindlichen Aufzeichnungsschicht wurde durch Auftragen eines Polyacrylharzklebers eine Klebstoffschicht hergestellt.On the back side of the sheet-shaped substrate of the heat-sensitive recording layer prepared in Example 3, an adhesive layer was formed by applying a polyacrylic resin adhesive.
Das bahnförmige Substrat wurde anschließend aufgerollt, sodass die Klebstoffschicht auf der ein Trennmittel aufweisenden Beaufschlagungs-Schicht liegt. Auch nach einer Lagerung von 30 Tagen lassen sich einzelne Lagen des wärmeempfindlichen Aufzeichnungsmaterials abrollen, ohne dass sich die Trennmittel aufweisende Beaufschlagungs-Schicht von der wärmeempfindlicher Aufzeichnungsschicht löst oder dass Rückstände der Klebstoffschicht auf der ein Trennmittel aufweisenden Beaufschlagungs-Schicht verbleiben.The web-shaped substrate was then rolled up, so that the adhesive layer is on the release agent layer having a release agent. Even after storage for 30 days, individual layers of the thermosensitive recording material can be unrolled without dissipating the releasing layer having the releasing agent from the thermosensitive recording layer or leaving residues of the adhesive layer on the impurity-containing impingement layer.
- (1) Substrat(1) Substrate
- (2) Hohlkörperpigmente aufweisende Zwischenschicht(2) Intermediate layer comprising hollow body pigments
- (3) wärmeempfindliche Aufzeichnungsschicht(3) heat-sensitive recording layer
- (4) Diffusionsschicht(4) diffusion layer
- (5) Trennmittel aufweisende Beaufschlagung(5) Impactor having release agent
- (6) vorderseitige Oberfläche(6) front surface
- (7) Klebstoffschicht(7) adhesive layer
Claims (15)
- A heat-sensitive recording material- having a web-shaped substrate (1), comprising a front side and a reverse side opposite the front side,- having a heat-sensitive recording layer (3) disposed to the front side of the web-shaped substrate (1),
this heat-sensitive recording layer (3) comprising at least one dye precursor and at least one (color) developer which is reactive with this at least one dye precursor,- having a front-side surface (6) of the heat-sensitive recording material that is formed dehesively with respect to layers (7) of adhesive which can be applied to the reverse side of the web-shaped substrate (1),wherein the heat-sensitive recording material, for the formation of its dehesive front-side surface (6),▪ comprises a furnish (5) which is disposed above the heat-sensitive recording layer (3) and comprises at least one release agent, the furnish (5) comprising, as the at least one release agent, a silicone component,
and▪ a diffusion layer (4), which is formed between the at least one release agent-comprising furnish (5) and the heat-sensitive recording layer (3), the diffusion layer (4) being formed by areal diffusion of parts at least of the release agent from the furnish (5) into the upper region, oriented toward the furnish (5), of the heat-sensitive recording layer (3) applied before the application of the furnish (5),a fraction of the entirety of the release agents of the furnish (5) that diffuses into the upper region of the heat-sensitive recording layer (3) formed being from 5 to 50 wt%. - The heat-sensitive recording material as claimed in claim 1, characterized in that a fraction of 6 to 45 wt%, preferably 7 to 40 wt%, more preferably 8 to 31 wt% of the entirety of the release agents of the furnish (5) diffuses into the upper region of the heat-sensitive recording layer (3) formed.
- The heat-sensitive recording material as claimed in either of claims 1 and 2, characterized in that the heat-sensitive recording layer (3) comprises at least one platelet-shaped pigment.
- The heat-sensitive recording material as claimed in claim 3, characterized in that the platelet-shaped pigment has an aspect ratio of 5 to 100, preferably of 15 to 100, especially preferably of 20 to 100.
- The heat-sensitive recording material as claimed in any of claims 1 to 4, characterized in that the furnish (5) is UV-crosslinking.
- The heat-sensitive recording material as claimed in any of claims 1 to 5, characterized in that the heat-sensitive recording material has a layer (7) of adhesive disposed on the reverse side of the web-shaped substrate (1).
- The heat-sensitive recording material as claimed in any of claims 1 to 6, characterized in that the heat-sensitive recording material has an interlayer (2) comprising hollow pigments and positioned between the web-shaped substrate (1) and the heat-sensitive recording layer (3).
- The heat-sensitive recording material as claimed in any of claims 1 to 7, characterized in that the heat-sensitive recording layer (3) comprises at least one (color) developer selected from the list encompassing:- 4-[(4-(1-methylethoxy)phenyl)sulfonyl]phenol,- N-(p-toluenesulfonyl)-N'-3-(p-toluenesulfonyloxyphenyl)urea,- diisopropyldiphenol,- 4,4-sulfonyldiphenol,- N-[2-(3-phenylureido)phenyl]benzenesulfonamide.
- The heat-sensitive recording material as claimed in claim 8, characterized in that the heat-sensitive recording layer (3) comprises at least one (color) developer selected from the list encompassing:- N-(p-toluenesulfonyl)-N'-3-(p-toluenesulfonyloxyphenyl)urea,- N-[2-(3-phenylureido)phenyl]benzenesulfonamide.
- The heat-sensitive recording material as claimed in any of claims 1 to 9, characterized in that the heat-sensitive recording layer (3) comprises as dye precursor 3-dibutylamino-6-methyl-7-anilinofluoran.
- The heat-sensitive recording material as claimed in any of claims 1 to 10, characterized in that the heat-sensitive recording layer (3) comprises at least one hydrophilic binder.
- The heat-sensitive recording material as claimed in claim 11, characterized in that the heat-sensitive recording layer (3) comprises as binder at least one component selected from the list encompassing:- ethylene-vinyl acetate copolymer- polyvinyl alcohol- styrene-butadiene latex- styrene-acrylate latex- starch- methylcellulose- polyvinyl alcohol-co-ethylene copolymer.
- The heat-sensitive recording material as claimed in any of claims 1 to 12, characterized in that the heat-sensitive recording layer (3) comprises at least one pigment selected from the list encompassing:- kaolinite (kaolin)- magnesium silicate hydrate (talc)- aluminum hydroxide- calcium carbonate- silicon dioxide (silica).
- A method for producing a heat-sensitive recording material as claimed in any of claims 1 to 13, the method comprising at least the following steps:- forming a web-shaped substrate (1), having a front side and a reverse side opposite the front side,- optionally:▪ providing a first coating composition, this first coating composition comprising at least hollow pigments,▪ applying the provided first coating composition to form an interlayer (2) comprising hollow pigments,▪ drying the first coating composition,- providing a second coating composition, this second coating composition comprising at least one dye precursor and at least one (color) developer which is reactive with this at least one dye precursor,- applying the provided second coating composition to form a heat-sensitive recording layer (3) disposed to the front side of the web-shaped substrate (1),- drying the second coating composition,- providing a third coating composition, this third coating composition comprising at least one release agent,- applying the provided third coating composition,- forming a diffusion layer (4) by areal diffusion of parts at least of the release agent from the applied third coating composition into the upper region of the heat-sensitive recording layer (3) formed,
wherein an amount of 5 to 50 wt% of the entirety of the release agents of the third coating composition diffuses into the upper region of the heat-sensitive recording layer (3),- drying and/or crosslinking the third coating composition to form the furnish (5) comprising a release agent,- optionally:▪ providing a fourth coating composition,▪ applying the provided fourth coating composition to form a layer (7) of adhesive disposed on the reverse side of the web-shaped substrate (1),▪ drying and/or crosslinking the fourth coating composition. - The use of a heat-sensitive recording material as claimed in any of claims 1 to 13 as a self-adhesive ticket.
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PL16733414T PL3221153T3 (en) | 2015-06-24 | 2016-06-24 | Heat sensitive recording material |
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EP15173719 | 2015-06-24 | ||
EP15176526.0A EP3109059B1 (en) | 2015-06-24 | 2015-07-13 | Heat sensitive recording material |
PCT/EP2016/064676 WO2016207356A1 (en) | 2015-06-24 | 2016-06-24 | Heat-sensitive recording material |
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EP (2) | EP3109059B1 (en) |
JP (2) | JP2018509316A (en) |
KR (1) | KR102058570B1 (en) |
CN (1) | CN107107642B (en) |
DE (1) | DE202015009476U1 (en) |
ES (2) | ES2684629T3 (en) |
PL (2) | PL3109059T3 (en) |
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PL3109059T3 (en) * | 2015-06-24 | 2018-10-31 | Mitsubishi Hitec Paper Europe Gmbh | Heat sensitive recording material |
DE102016219567A1 (en) * | 2016-10-07 | 2018-04-12 | Mitsubishi Hitec Paper Europe Gmbh | Heat-sensitive recording material |
JP6664552B2 (en) | 2016-10-07 | 2020-03-13 | ミツビシ ハイテク ペイパー ユーロップ ゲー・エム・ベー・ハーMitsubishi HiTec Paper Europe GmbH | Thermal recording material |
DE102016219569A1 (en) * | 2016-10-07 | 2018-04-12 | Mitsubishi Hitec Paper Europe Gmbh | Heat-sensitive recording material |
DE102018102180A1 (en) * | 2018-01-31 | 2019-08-01 | Mitsubishi Hitec Paper Europe Gmbh | Heat-sensitive recording material |
JP6955465B2 (en) * | 2018-03-16 | 2021-10-27 | カシオ計算機株式会社 | Thermal recording medium and its manufacturing method |
EP3885152B1 (en) * | 2020-03-23 | 2022-06-08 | Koehler Innovation & Technology GmbH | Use of n-(p-toluenesulfonyl)-n'-(3-p-toluenesulfonyloxyphenyl)urea as colour developer in a heat-sensitive recording material |
DE102021115909A1 (en) | 2021-06-18 | 2022-12-22 | Koehler Innovation & Technology Gmbh | Heat-sensitive recording materials |
DE102021133751A1 (en) | 2021-12-17 | 2023-06-22 | Koehler Innovation & Technology Gmbh | Heat-sensitive recording material |
DE102021120941A1 (en) | 2021-08-11 | 2023-02-16 | Koehler Innovation & Technology Gmbh | Heat-sensitive recording material |
JP2024532719A (en) | 2021-08-11 | 2024-09-10 | コーラー イノベーション アンド テクノロジー ゲーエムベーハー | Thermal recording materials |
DE102021133333A1 (en) | 2021-12-15 | 2023-06-15 | Koehler Innovation & Technology Gmbh | Heat-sensitive recording material in sheet form |
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PL3221153T3 (en) | 2018-12-31 |
US10328735B2 (en) | 2019-06-25 |
CN107107642A (en) | 2017-08-29 |
DE202015009476U1 (en) | 2017-10-26 |
US20170368859A1 (en) | 2017-12-28 |
EP3109059A1 (en) | 2016-12-28 |
RU2670521C1 (en) | 2018-10-23 |
PL3109059T3 (en) | 2018-10-31 |
EP3109059B1 (en) | 2018-06-27 |
KR20170109032A (en) | 2017-09-27 |
WO2016207356A1 (en) | 2016-12-29 |
JP2019206188A (en) | 2019-12-05 |
ES2684629T3 (en) | 2018-10-03 |
ES2693023T3 (en) | 2018-12-07 |
JP2018509316A (en) | 2018-04-05 |
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EP3221153A1 (en) | 2017-09-27 |
KR102058570B1 (en) | 2019-12-23 |
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