EP0126906A1 - Heat-sensitive registration/transfer material - Google Patents
Heat-sensitive registration/transfer material Download PDFInfo
- Publication number
- EP0126906A1 EP0126906A1 EP84103623A EP84103623A EP0126906A1 EP 0126906 A1 EP0126906 A1 EP 0126906A1 EP 84103623 A EP84103623 A EP 84103623A EP 84103623 A EP84103623 A EP 84103623A EP 0126906 A1 EP0126906 A1 EP 0126906A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat
- wax
- layer
- sensitive recording
- binder
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 23
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 14
- 239000000049 pigment Substances 0.000 claims abstract description 13
- 230000008018 melting Effects 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 9
- 229920001577 copolymer Polymers 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 4
- 239000001993 wax Substances 0.000 claims description 26
- 239000006185 dispersion Substances 0.000 claims description 21
- 239000012943 hotmelt Substances 0.000 claims description 21
- 239000012876 carrier material Substances 0.000 claims description 11
- 239000008199 coating composition Substances 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000003791 organic solvent mixture Substances 0.000 claims description 4
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims description 4
- 239000004209 oxidized polyethylene wax Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000376 reactant Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 6
- 229930195733 hydrocarbon Natural products 0.000 abstract description 6
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 21
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 14
- 239000000123 paper Substances 0.000 description 10
- 239000006229 carbon black Substances 0.000 description 6
- 235000019241 carbon black Nutrition 0.000 description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical class [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000011877 solvent mixture Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000019359 magnesium stearate Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920006345 thermoplastic polyamide Polymers 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000294754 Macroptilium atropurpureum Species 0.000 description 1
- AZUZXOSWBOBCJY-UHFFFAOYSA-N Polyethylene, oxidized Polymers OC(=O)CCC(=O)C(C)C(O)CCCCC=O AZUZXOSWBOBCJY-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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- 239000011088 parchment paper Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001289 polyvinyl ether Polymers 0.000 description 1
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- 229910052718 tin Inorganic materials 0.000 description 1
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
- B41M5/382—Contact thermal transfer or sublimation processes
- B41M5/392—Additives, other than colour forming substances, dyes or pigments, e.g. sensitisers, transfer promoting agents
- B41M5/395—Macromolecular additives, e.g. binders
Definitions
- the invention relates to a heat-sensitive recording / transfer material with a back coating which can be transferred to normal paper by heat.
- the invention is directed to the formation and composition of the hot melt transfer layer for materials which are used in so-called thermal printers which have a thermal head.
- DE-A-2 202 630 describes an ink sheet for copying processes, in which original sheets bearing an image absorbing infrared radiation, an ink sheet and an ink sheet are placed one on top of the other. Then it is irradiated with infrared light so that the transfer of the color layer from the color sheet to the copy sheet takes place in accordance with the original image locations.
- the discontinuous transfer layer consists of heat-softenable particles, which consist of a larger amount by weight of wax and a film-forming binder.
- the softening point of the particles is in the range of about 66 - 104 ° C.
- a heat-sensitive transfer material for thermal printers with a thermal head that has a thermal color development layer on the front of a suitable carrier material and a transferable hot-melt color layer on the back, which is locally generated when generating color patterns in the thermal color developer layer the heat acting on the front is melted and transferred to a conventional office paper arranged underneath.
- the hot-melt paint layer contains a heat-conducting color pigment and as a binder a solid wax with a penetration at 25 ° C of 10-30 and a viscosity of 20-200 mPas at 100 ° C. Together with the solid wax, other hot-melt materials such as low molecular weight polyethylene, oxidized wax and ester waxes can be used as binders. According to the information in the publication, the viscosity of the ink layer must be in the range specified because the viscosity significantly influences the transferability of the hot-melt ink layer.
- the known transfer material has the following disadvantages: If the thermal recording device is operated for a longer period of time, the transfer deteriorates considerably because the softening point of the wax layer is too low with the claimed penetration capacity. The color intensity of the copy is not sufficient for numerous purposes. When used in facsimile machines, the common passage of the transmission material and the recording duplicate sheet is often disturbed because the sheets move against one another because of the smooth surfaces.
- the object of the present invention is to improve the properties of the transmission material described in DE-A-3 043 866.
- the heat-sensitive recording / transfer material for thermal printers with a thermal head with a hot melt layer arranged on the back of a thin carrier material and transferable by heat acting on the front, which contains a color pigment, a wax as a binder and conventional auxiliaries, which is characterized in that that the hot melt layer contains an oxidized polyethylene wax, a vinyl acetate copolymer, a modified hydrocarbon wax or a mixture thereof with a softening temperature of 95-115 ° C and a film-forming thermoplastic binder in a weight ratio of 10: 1 to 30: 1, so that the layer has a Has melting point of 101-110 ° C.
- the hot melt layer is preferably present in an amount of 2-12 g / m 2 on a carrier sheet with a basis weight of 6-30 g / m 2 .
- the material according to the invention can have on the front side a known heat-sensitive recording layer which contains an initially colorless color former, a color developer and a heat-melting substance which dissolves one or both reactants.
- the invention also includes a process for producing a heat-sensitive recording material, which is characterized in that the fusible waxes, the thermoplastic binder and a viscosity regulator are dissolved in an organic solvent or solvent mixture, the solution is rapidly cooled with stirring or in a non-solvent liquid Mixing formation of a finely divided dispersion, mixed into the dispersion, the color pigment and the coating composition applied to the carrier sheet and dried.
- the transferable hot melt layer contains from 12 to 30 parts by weight of oxidized polyethylene wax, vinyl acetate copolymer polyethylene wax, modified hydrocarbon wax or a mixture thereof with a softening point between 95 and 115 ° C., from 0.5 to 5 parts by weight of a film-forming agent thermoplastic binder, from 4 to 10 parts by weight of heat-conducting color pigment, carbon black or other color pigments.
- An oxidized PE wax with a softening point between 102 and 106 ° C and a needle penetration according to ASTM D 5 of 4-9 has proven to be particularly suitable.
- waxes have an average molecular weight of 1500-2000 and a viscosity in the range of 150-200 mPas (Brookfield) at 140 ° C.
- a vinyl acetate copolymer with a softening point of 95 ° C and a needle penetration of 9.5 according to ASTM D 5 and a viscosity of 400-600 mPas (Brookfield) at 140 ° C, or a modified hydrocarbon wax with a melting point of 101- 110 ° C, a needle penetration of 1.5-3 mm.
- the melt viscosity of this wax is 120 ° C in the range of 140-160 mPas (Brookfield).
- the modification of the hydrocarbon wax makes it possible to produce a very finely divided dispersion in organic solvents which can be used for the coating mixture of the hot-melt layer.
- the other wax components mentioned are also distinguished by the fact that they can easily be processed into dispersions in organic solvents with very fine particles.
- Reactive polyamide resins, reactive phenolic resins and resin ester products can be used as the film-forming thermoplastic component for solidification.
- a thermoplastic polyamide resin with a softening point according to DIN 1995 of 105-115 ° C and a viscosity of 2.1-2.7 mPas at 165 ° C has proven to be particularly suitable.
- Black pigments such as carbon black, graphite or the like, but also finely divided metal powders such as aluminum, copper, tin or the like can be used as the heat-conducting color pigment. By using a heat-conducting pigment, the melting behavior of the hot melt layer and the transferability are improved.
- Colored carbon blacks with particle sizes between 20 and 60 Nm are particularly suitable.
- the hot melt layer is applied to the back of a suitable thin carrier material such as paper, in particular thin printing paper, cable insulating papers, condenser papers, parchment papers, wax raw and ignition coil papers or films such as polyester films, polypropyl films.
- a suitable thin carrier material such as paper, in particular thin printing paper, cable insulating papers, condenser papers, parchment papers, wax raw and ignition coil papers or films such as polyester films, polypropyl films.
- the carrier materials have a basis weight between 6 and 30 g / m 2 and are usually 15 ⁇ m thick.
- a coating composition is produced by heating and dissolving the wax or the wax mixture and the film-forming thermoplastic binder together with a dispersing aid and / or viscosity regulator in a suitable solvent or solvent mixture.
- Suitable solvents are toluene, isopropanol, special gasoline, chlorinated hydrocarbons, xylene or mixtures thereof.
- Products which are soluble in organic solvents for example alkyl-modified polyvinylpyrrolidone with a molecular weight between 7,000 and 20,000 and whose melting range is below 100 ° C., preferably below 50 ° C., are suitable as viscosity regulators or dispersing agents.
- This solution is then rapidly cooled with stirring or poured into a non-solvent liquid in order to produce a finely divided dispersion of the melt layer components in the liquid phase.
- the color pigment is then dispersed into this dispersion using suitable devices.
- the coating composition is then applied to one side of a carrier material using conventional application units, such as knife and blade spreading heads, and the solvent is evaporated off.
- the application weight of the continuous layer is from 2 to 12 g / m 2 , preferably from 3 to 6 g / m2 .
- the layer has a melting point of 101 ° -10 ° C, preferably 104 ° -108 ° C.
- a thermally responsive color development layer can be applied to the front of the carrier material before or after the application of the hot melt transfer layer.
- This layer is approximately 2 to 10 ⁇ m thick with an application weight of 2 to 10 g / m 2 . It contains a color former and as a reaction partner a so-called acceptor and a heat-fusible compound which, in the molten state, makes contact with the color-forming reaction partners for the reaction.
- acceptor a so-called acceptor and a heat-fusible compound which, in the molten state, makes contact with the color-forming reaction partners for the reaction.
- Such layers are known and are described, for example, in DE-A 2 211 984 or 2 934 378.
- the transfer material according to the invention can also have only one hot-melt layer on the back, which is transferred to an underlying recording sheet by contact of the front with the hot pen of such recording devices.
- the coating composition obtained is applied with a doctor blade to satinized paper or a film made of polyester or polypropylene up to 25 ⁇ m thick.
- Ls first antsteht a matte ink layer with a aarbürste H can be polished to shine and thereby enables much more intense and sharper contours transmission images.
- the coating composition is applied to a thin printing paper with an application weight of 5 g / m 2 (atro) using conventional equipment and dried.
- thermosensitive recording layer can be applied to the front of the carrier material.
- the coating composition comprising a color former and an acceptor or color developer and a fusible component is applied uniformly to the carrier web and dried using conventional devices such as roller doctor blades or the like.
- a base paper with a thickness of 25-30 ⁇ m and a Bekk smoothness of 200 to 1000 seconds is used.
- the opacity should be such that the brightest possible thermosensitive front layer is present after the recording.
- the advantage of the recording / transfer material according to the invention for thermal printers with a thermal head is that by using the waxes mentioned from the dispersion, the melting point of the color layer is significantly increased, and even when the thermal printer is started up over a longer period of time, the transferability and the transferred color image remain essential more constant in intensity and uniformity than with known materials.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Laminated Bodies (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
Description
Gegenstand der Erfindung ist ein wärmeempfindliches Aufzeichnungs/übertragungsmaterial mit einer durch Wärme auf Normalpapier übertragbaren Rückseitenbeschichtung. Insbesondere richtet sich die Erfindung auf die Ausbildung und Zusammensetzung der Heißschmelzübertragungsschicht für Materialien die in sogenannten Thermodruckern, die einen Wärmekopf aufweisen, verwendet werden. In DE-A-2 202 630 ist ein Farbblatt für Kopierverfahren beschrieben,bei dem ein Infrarotstrahlung absorbierende Bildstellen tragender Originalbogen, ein Kopierbogen und ein Farbblatt übereinandergelegt werden. Dann wird mit infrarotem Licht bestrahlt, so daß entsprechend den Originalbildstellen die übertragung der Farbschicht vom Farbblatt auf das Kopierblatt erfolgt. Die diskontinuierliche übertragungsschicht besteht aus durch Wärme erweichbaren Teilchen, die aus einer größeren Gewichtsmenge Wachs und einem filmbildenden Binder bestehen. Der Erweichungspunkt der Teilchen liegt im Bereich von etwa 66 - 104° C. Aus DE-A-3 043 866 ist ein wärmeempfindliches übertragungsmaterial für Thermodrucker mit Wärmekopf bekannt, daß auf der Vorderseite eines geeigneten Trägermaterials eine thermische Farbentwicklungsschicht und auf der Rückseite eine übertragbare Heißschmelzfarbschicht aufweist, die beim Erzeugen von Farbmustern in der thermischen Farbentwicklerschicht durch die lokal auf der Vorderseite einwirkende Wärme geschmolzen und auf ein darunter angeordnetes übliches Büropapier übertragen wird.The invention relates to a heat-sensitive recording / transfer material with a back coating which can be transferred to normal paper by heat. In particular, the invention is directed to the formation and composition of the hot melt transfer layer for materials which are used in so-called thermal printers which have a thermal head. DE-A-2 202 630 describes an ink sheet for copying processes, in which original sheets bearing an image absorbing infrared radiation, an ink sheet and an ink sheet are placed one on top of the other. Then it is irradiated with infrared light so that the transfer of the color layer from the color sheet to the copy sheet takes place in accordance with the original image locations. The discontinuous transfer layer consists of heat-softenable particles, which consist of a larger amount by weight of wax and a film-forming binder. The softening point of the particles is in the range of about 66 - 104 ° C. From DE-A-3 043 866 a heat-sensitive transfer material for thermal printers with a thermal head is known that has a thermal color development layer on the front of a suitable carrier material and a transferable hot-melt color layer on the back, which is locally generated when generating color patterns in the thermal color developer layer the heat acting on the front is melted and transferred to a conventional office paper arranged underneath.
Die Heißschmelzfarbschicht enthält ein wärmeleitendes Farbpigment und als Bindemittel ein festes Wachs mit einer Penetration bei 25° C von 10-30 und einer Viskosität von 20-200 mPas bei 100° C. Zusammen mit dem festen Wachs können auch andere heißschmelzende Materialien wie niedermolekulares Polyäthylen, oxidiertes Wachs und Esterwachse als Bindemittel verwendet werden. Die Viskosität der Farbschicht muß nach den Angaben in der Druckschrift im angegebenen Bereich liegen, weil die Viskosität in signifikanter Weise die übertragbarkeit der Heißschmelzfarbschicht beeinflußt.The hot-melt paint layer contains a heat-conducting color pigment and as a binder a solid wax with a penetration at 25 ° C of 10-30 and a viscosity of 20-200 mPas at 100 ° C. Together with the solid wax, other hot-melt materials such as low molecular weight polyethylene, oxidized wax and ester waxes can be used as binders. According to the information in the publication, the viscosity of the ink layer must be in the range specified because the viscosity significantly influences the transferability of the hot-melt ink layer.
Das bekannte übertragungsmaterial hat jedoch folgende Nachteile: Bei zeitlich längerem Betrieb des Thermoaufzeichnungsgerätes verschlechtert sich die übertragung erheblich, weil der Erweichungspunkt der Wachsschicht mit dem beanspruchten Penetrationsvermögen zu niedrig liegt. Für zahlreiche Zwecke ist die Farbintensität der Kopie nicht ausreichend. Bei Verwendung in Fernkopiergeräten ist der gemeinsame Durchlauf des übertragungsmaterials und dem aufzeichnenden Duplikatblatt häufig gestört, weil sich die Blätter wegen der glatten Oberflächen gegeneinander verschieben.However, the known transfer material has the following disadvantages: If the thermal recording device is operated for a longer period of time, the transfer deteriorates considerably because the softening point of the wax layer is too low with the claimed penetration capacity. The color intensity of the copy is not sufficient for numerous purposes. When used in facsimile machines, the common passage of the transmission material and the recording duplicate sheet is often disturbed because the sheets move against one another because of the smooth surfaces.
Aufgabe der vorliegenden Erfindung ist eine Verbesserung der Eigenschaften des in DE-A-3 043 866 beschriebenen übertragungsmaterials.The object of the present invention is to improve the properties of the transmission material described in DE-A-3 043 866.
Diese Aufgabe wird gelöst durch das wärmeempfindliche Aufzeichnungs/Übertragungsmaterial für Thermodrucker mit Wärmekopf mit einer auf der Rückseite eines dünnen Trägermaterials angeordneten, durch auf die Vorderseite einwirkende Wärme übertragbaren Heißschmelzschicht, die ein Farbpigment, ein Wachs als Bindemittel und übliche Hilfsstoffe enthält, daß dadurch gekennzeichnet ist, daß die Heißschmelzschicht ein oxidiertes Polyäthylenwachs, ein Vinylacetat-Copolymer, ein modifiziertes Kohlenwasserstoffwachs oder eine Mischung derselben mit einer Erweichungstemperatur von 95-115° C und ein filmbildendes thermoplastisches Bindemittel im Gewichtsverhältnis 10:1 bis 30:1 enthält, so daß die Schicht einen Schmelzpunkt von 101-110° C aufweist.This object is achieved by the heat-sensitive recording / transfer material for thermal printers with a thermal head with a hot melt layer arranged on the back of a thin carrier material and transferable by heat acting on the front, which contains a color pigment, a wax as a binder and conventional auxiliaries, which is characterized in that that the hot melt layer contains an oxidized polyethylene wax, a vinyl acetate copolymer, a modified hydrocarbon wax or a mixture thereof with a softening temperature of 95-115 ° C and a film-forming thermoplastic binder in a weight ratio of 10: 1 to 30: 1, so that the layer has a Has melting point of 101-110 ° C.
Vorzugsweise ist die Heißschmelzschicht in einer Menge von 2-12 g/m2 auf einem Trägerblatt mit einem Flächengewicht von 6-30 g/m2 vorhanden. Das erfindungsgemäße Material kann auf der Vorderseite eine an sich bekannte wärmeempfindliche Aufzeichnungssschicht, die einen zunächst farblosen Farbbildner, einen Farbentwickler und einen in der Wärme schmelzenden, ein oder beide Reaktionspartner lösenden Stoff enthält, aufweisen.The hot melt layer is preferably present in an amount of 2-12 g / m 2 on a carrier sheet with a basis weight of 6-30 g / m 2 . The material according to the invention can have on the front side a known heat-sensitive recording layer which contains an initially colorless color former, a color developer and a heat-melting substance which dissolves one or both reactants.
Die Erfindung schließt auch ein Verfahren zum Herstellen eines wärmeempfindlichen Aufzeichnungsmaterials ein, das dadurch gekennzeichnet ist, daß man die schmelzbaren Wachse, das thermoplastische Bindemittel und einen Viskositätsregler in einem organischen Lösungsmittel oder Lösungsmittelgemisch löst, die Lösung unter Rühren schnell abkühlt oder in eine nichtlösende Flüssigkeit unter Bildung einer feinteiligen Dispersion einmischt, in die Dispersion das Farbpigment einmischt und die Beschichtungsmasse auf das Trägerblatt aufbringt und trocknet.The invention also includes a process for producing a heat-sensitive recording material, which is characterized in that the fusible waxes, the thermoplastic binder and a viscosity regulator are dissolved in an organic solvent or solvent mixture, the solution is rapidly cooled with stirring or in a non-solvent liquid Mixing formation of a finely divided dispersion, mixed into the dispersion, the color pigment and the coating composition applied to the carrier sheet and dried.
Völlig überraschend und im Gegensatz zur Lehre der DE-A-3 043 866 wurde gefunden, daß ein wärmeschmelzbares Bindemittel mit einer höheren Viskosität als 200 mPas eine noch bessere und gleichmäßigere übertragung der Heißschmelzschicht unter Wärmeeinwirkung ermöglicht.Completely surprising and contrary to the teaching of DE-A-3 043 866, it was found that a heat-fusible binder with a viscosity higher than 200 mPas enables an even better and more uniform transfer of the hot-melt layer under the action of heat.
Erfindungsgemäß enthält die übertragbare Heißschmelzschicht von 12 bis 30 Gew.-Teile oxidiertes Polyäthylenwachs, Vinylacetat-Copolymer-Polyäthylenwachs, modifiziertes Kohlenwasserstoffwachs oder eine Mischung davon mit einem Erweichungspunkt zwischen 95 und 115° C, von 0,5 bis 5 Gew.-Teile eines filmbildenden thermoplastischen Bindemittels, von 4 bis 10 Gew.-Teile wärmeleitendes Farbpigment, Ruß oder andere Farbpigmente. Als besonders geeignet hat sich ein oxidiertes PE-Wachs mit einem Erweichungspunkt zwischen 102 und 106° C und einer Nadelpenetration nach ASTM D 5 von 4-9 erwiesen. Diese Wachse weisen ein durchschnittliches Molekulargewicht von 1500-2000 und bei 140° C eine Viskosität im Bereich von 150-200 mPas (Brookfield) auf. Ebenso brauchbar ist ein Vinylacetat-Copolymer mit einem Erweichungspunkt von 95° C und einer Nadelpenetration von 9,5 nach ASTM D 5 und einer Viskosität von 400-600 mPas (Brookfield) bei 140° C, oder ein modifiziertes Kohlenwasserstoffwachs mit Schmelzpunkt von 101-110° C, einer Nadelpenetration von 1,5-3 mm. Die Schmelzviskosität dieses Wachses liegt bei 120° C im Bereich von 140-160 mPas (Brookfield).According to the invention, the transferable hot melt layer contains from 12 to 30 parts by weight of oxidized polyethylene wax, vinyl acetate copolymer polyethylene wax, modified hydrocarbon wax or a mixture thereof with a softening point between 95 and 115 ° C., from 0.5 to 5 parts by weight of a film-forming agent thermoplastic binder, from 4 to 10 parts by weight of heat-conducting color pigment, carbon black or other color pigments. An oxidized PE wax with a softening point between 102 and 106 ° C and a needle penetration according to ASTM D 5 of 4-9 has proven to be particularly suitable. These waxes have an average molecular weight of 1500-2000 and a viscosity in the range of 150-200 mPas (Brookfield) at 140 ° C. Also usable is a vinyl acetate copolymer with a softening point of 95 ° C and a needle penetration of 9.5 according to ASTM D 5 and a viscosity of 400-600 mPas (Brookfield) at 140 ° C, or a modified hydrocarbon wax with a melting point of 101- 110 ° C, a needle penetration of 1.5-3 mm. The melt viscosity of this wax is 120 ° C in the range of 140-160 mPas (Brookfield).
Durch die Modifizierung des Kohlenwasserstoffwachses läßt sich in organischen Lösungsmitteln eine sehr feinteilige Dispersion herstellen, die für die Beschichtungsmischung der Heißschmelzschicht verwendet werden kann.The modification of the hydrocarbon wax makes it possible to produce a very finely divided dispersion in organic solvents which can be used for the coating mixture of the hot-melt layer.
Auch die anderen genannten Wachskomponenten zeichnen sich dadurch aus, daß sie leicht zu Dispersion in organischen Lösungsmitteln mit sehr feinen Teilchen verarbeitbar sind. Als filmbildende thermoplastische Komponente zur Verfestigung können reaktive Polyamidharze, reaktive Phenolharze, Harzesterprodukte verwendet werden. Als besonders geeignet hat sich ein thermoplastisches Polyamidharz mit einem Erweichungspunkt nach DIN 1995 von 105-115° C und einer Viskosität von 2,1-2,7 mPas bei 165° C erwiesen. Als wärmeleitendes Farbpigment können schwarze Pigmente wie Ruß, Graphit o. dgl., aber auch feinteilige Metallpulver wie Aluminium, Kupfer, Zinn o. dgl. verwendet werden. Durch Verwendung eines wärmeleitenden Pigmentes werden das Schmelzverhalten der Heißschmelzschicht und die übertragbarkeit verbessert.The other wax components mentioned are also distinguished by the fact that they can easily be processed into dispersions in organic solvents with very fine particles. Reactive polyamide resins, reactive phenolic resins and resin ester products can be used as the film-forming thermoplastic component for solidification. A thermoplastic polyamide resin with a softening point according to DIN 1995 of 105-115 ° C and a viscosity of 2.1-2.7 mPas at 165 ° C has proven to be particularly suitable. Black pigments such as carbon black, graphite or the like, but also finely divided metal powders such as aluminum, copper, tin or the like can be used as the heat-conducting color pigment. By using a heat-conducting pigment, the melting behavior of the hot melt layer and the transferability are improved.
Besonders geeignet sind farbstarke Farbruße mit Teilchengrößen zwischen 20 und 60 Nm.Colored carbon blacks with particle sizes between 20 and 60 Nm are particularly suitable.
Die Heißschmelzschicht wird auf die Rückseite eines geeigneten dünnen Trägermaterials wie Papier, insbesondere Dünndruckpapier, Kabelisolierpapiere, Kondensatorpapiere, Pergamentpapiere, Wachsroh- und Zündspulenpapiere oder Folien wie Polyesterfolien, Polypropylfolien aufgebracht. Die Trägermaterialien haben Flächengewicht zwischen 6 und 30 g/m2 und sind in der Regel 15 µm dick. Zum Aufbringen wird eine Beschichtungsmasse hergestellt, durch Erwärmen und Auflösen des Wachses oder der Wachsmischung und des filmbildenden thermoplastischen Bindemittels zusammen mit einem Dispergierhilfsmittel und/oder Viskositätsregler in einem geeigneten Lösungsmittel oder Lösungsmittelgemisch. Geeignete Lösungsmittel sind Toluol, Isopropanol, Spezialbenzine, Chlorkohlenwasserstoffe, Xylol oder Mischungen davon. Als Viskositätsregler bzw. Dispergierhilfsmittel sind in organischen Lösungsmitteln lösliche Produkte geeignet, beispielsweise alkylmodifiziertes Polyvinylpyrrolidon mit Molekulargewicht zwischen 7000 und 20000, deren Schmelzbereich unter 100° C, vorzugsweise unter 50° C liegt.The hot melt layer is applied to the back of a suitable thin carrier material such as paper, in particular thin printing paper, cable insulating papers, condenser papers, parchment papers, wax raw and ignition coil papers or films such as polyester films, polypropyl films. The carrier materials have a basis weight between 6 and 30 g / m 2 and are usually 15 µm thick. For the application, a coating composition is produced by heating and dissolving the wax or the wax mixture and the film-forming thermoplastic binder together with a dispersing aid and / or viscosity regulator in a suitable solvent or solvent mixture. Suitable solvents are toluene, isopropanol, special gasoline, chlorinated hydrocarbons, xylene or mixtures thereof. Products which are soluble in organic solvents, for example alkyl-modified polyvinylpyrrolidone with a molecular weight between 7,000 and 20,000 and whose melting range is below 100 ° C., preferably below 50 ° C., are suitable as viscosity regulators or dispersing agents.
Diese Lösung wird dann unter Rühren schnell abgekühlt oder in eine nichtlösende Flüssigkeit eingegossen, um eine feinteilige Dispersion der Schmelzschichtkomponenten in der flüssigen Phase zu erzeugen. In diese Dispersion wird dann das Farbpigment mit geeigneten Einrichtungen eindispergiert.This solution is then rapidly cooled with stirring or poured into a non-solvent liquid in order to produce a finely divided dispersion of the melt layer components in the liquid phase. The color pigment is then dispersed into this dispersion using suitable devices.
Als Viskositätsregler für die Beschichtungsmasse sind Spezialwachse auf der Grundlage eines wachsartigen Polyvinyläthers sowie alkylmodifizierte Polyvinyl-Pyrrolidone und Magnesiumstearate geeignet. Diese Stoffe werden zweckmäßigerweise bereits in die Lösung aus Polyäthylenwachs und filmbildendem thermoplastischem Bindemittel eingebracht und mitausgefällt, um eine möglichst gleichmäßige Verteilung in den Phasen zu erreichen.Special waxes based on a wax-like polyvinyl ether as well as alkyl-modified polyvinyl pyrrolidones and magnesium stearates are suitable as viscosity regulators for the coating material. These substances are expediently introduced into the solution of polyethylene wax and film-forming thermoplastic binder and also precipitated in order to achieve as uniform a distribution as possible in the phases.
Die Beschichtungsmasse wird dann mit üblichen Auftragsaggregaten wie Rakel- und Bladestreichköpfen auf die eine Seite eines Trägermaterials aufgebracht und das Lösungsmittel abgedampft. Das Auftragsgewicht der kontinuierlichen Schicht beträgt von 2 bis 12 g/m2, vorzugsweise von 3 bis 6 g/m2.The coating composition is then applied to one side of a carrier material using conventional application units, such as knife and blade spreading heads, and the solvent is evaporated off. The application weight of the continuous layer is from 2 to 12 g / m 2 , preferably from 3 to 6 g / m2 .
Als ganz besonders geeignet hat sich ein Auftragsgewicht von 5,0 g/m2 erwiesen. Die Schicht weist einen Schmelzpunkt von 101°-l10° C, vorzugsweise 104°-108° C auf.An application weight of 5.0 g / m 2 has proven to be particularly suitable. The layer has a melting point of 101 ° -10 ° C, preferably 104 ° -108 ° C.
Auf die Vorderseite des Trägermaterials kann vor oder nach dem Auftragen der Heißschmelzübertragungsschicht eine thermisch ansprechende Farbentwicklungsschicht aufgebracht werden. Diese Schicht ist von ca. 2 bis 10 µm dick, bei einem Auftragsgewicht von 2 bis 10 g/m2. Sie enthält einen Farbbildner und als Reaktionspartner einen sogenannten Akzeptor und eine wärmeschmelzbare Verbindung, die im geschmolzenen Zustand den Kontakt der farbbildenden Reaktionspartner für die Reaktion herstellt. Derartige Schichten sind bekannt und beispielsweise in DE-A 2 211 984 oder 2 934 378 beschrieben.A thermally responsive color development layer can be applied to the front of the carrier material before or after the application of the hot melt transfer layer. This layer is approximately 2 to 10 µm thick with an application weight of 2 to 10 g / m 2 . It contains a color former and as a reaction partner a so-called acceptor and a heat-fusible compound which, in the molten state, makes contact with the color-forming reaction partners for the reaction. Such layers are known and are described, for example, in DE-A 2 211 984 or 2 934 378.
Das erfindungsgemäße übertragungsmaterial kann jedoch auch nur eine Heißschmelzschicht auf der Rückseite aufweisen, die durch Kontakt der Vorderseite mit dem heißen Stift derartiger Aufzeichnungsgeräte auf ein darunterliegendes Aufnahmeblatt übertragen wird.However, the transfer material according to the invention can also have only one hot-melt layer on the back, which is transferred to an underlying recording sheet by contact of the front with the hot pen of such recording devices.
Um die Übertragbarkeit der Heißschmelzschicht auf der Rückseite des Trägermaterials zu verbessern, ist es vorteilhaft, die Beschichtung noch durch Bürsten zu glätten. Dazu sind die übliche Einrichtungen geeignet, wobei jedoch darauf zu achten ist, daß die Bürsten ausreichend weich sind, um ein Verkratzen oder Beschädigen der Schmelzschicht zu vermeiden, jedoch auch noch ausreichend steif sind, um eine Polierwirkung an der Oberfläche zu erzielen.In order to improve the transferability of the hot-melt layer on the back of the carrier material, it is advantageous to smooth the coating by brushing. The usual devices are suitable for this, but care must be taken to ensure that the brushes are sufficiently soft to avoid scratching or damaging the melt layer, but are also sufficiently stiff to achieve a polishing effect on the surface.
Herstellen der Beschichtungszusammensetzung für die Heißschmelzschicht:
- 20 g oxidiertes Polyäthylenwachs, Erweichungspunkt 104° C, Viskosität 200 mPas bei 140° C
- 1,0 g alkylmodifiziertes Polyvinylpyrrolidon mit Schmelzbereich 35°-36° C
- 1,0 g thermoplastisches Polyamidharz
- 10,0 g Isopropanol
- 68,0 g Toluol
werden heiß in dem angegebenen Lösungsmittelgemisch gelöst und die Lösung dann unter Rühren schnell abgekühlt, so daß infolge der übersättigung eine feinteilige Dispersion entsteht.Preparation of the coating composition for the hot melt layer:
- 20 g oxidized polyethylene wax, softening point 104 ° C, viscosity 200 mPas at 140 ° C
- 1.0 g of alkyl-modified polyvinylpyrrolidone with a melting range of 35 ° -36 ° C
- 1.0 g thermoplastic polyamide resin
- 10.0 g isopropanol
- 68.0 g toluene
are dissolved hot in the specified solvent mixture and the solution is then rapidly cooled while stirring, so that a finely divided dispersion is formed as a result of the oversaturation.
In diese Dispersion wird dann 6 g Farbruß (45 µm Teilchengröße, BET-Oberfl. 45 m2/g) mit einem schnellaufenden Rührwerk eindispergiert. Die Dispersion kann dann durch Verdünnen mit Toluol in eine streichfähige Farbe mit festgelegter Viskosität gebracht werden.6 g of carbon black (45 μm particle size, BET surface area 45 m 2 / g) are then dispersed into this dispersion using a high-speed stirrer. The dispersion can then be made into a spreadable paint with a fixed viscosity by dilution with toluene.
Die erhaltene Beschichtungsmasse wird mit einem Rakel auf ein bis zu 25 µm starkes, satiniertes Papier oder eine Folie aus Polyester oder Polypropylen aufgetragen.The coating composition obtained is applied with a doctor blade to satinized paper or a film made of polyester or polypropylene up to 25 μm thick.
Ls antsteht zunächst eine matte Farbschicht, die mit einer Haarbürste auf Glanz poliert werden kann und dadurch wesentlich intensivere und konturenschärfere übertragungsbilder ermöglicht.Ls first antsteht a matte ink layer with a aarbürste H can be polished to shine and thereby enables much more intense and sharper contours transmission images.
Herstellen der Beschichtungszusammensetzung für die Heißschmelzschicht:
- 30 g modifiziertes Kohlenwasserstoffwachs mit einem Schmelzpunkt von 101-110° C und einer Viskosität von 150 mPas bei 120° C
- 0,8 g alkylmodifiziertes Polyvinylpyrrolidon, Schmelzbereich 35-36° C
- 1,0 g reaktives Phenolharz
- 10 g Isopropanol
- 65,0 g Toluol
werden heiß im angegebenen Lösungsmittelgemisch gelöst und analog Beispiel 1 abgekühlt und eine feinteilige Dispersion gebildet, in die 7 g Ruß mit einer Teilchengröße von 55 µm und einer BET-Oberfläche von 50 m2/g eindispergiert werden. Die Dispersion wird dann, wie in Beispiel 1 angegeben, gegebenenfalls noch mit Toluol verdünnt und auf eine Polyesterfolie als Trägermaterial aufgetragen.Preparation of the coating composition for the hot melt layer:
- 30 g of modified hydrocarbon wax with a melting point of 101-110 ° C and a viscosity of 150 mPas at 120 ° C
- 0.8 g of alkyl modified polyvinylpyrrolidone, melting range 35-36 ° C
- 1.0 g reactive phenolic resin
- 10 g isopropanol
- 65.0 g toluene
are dissolved hot in the solvent mixture indicated and cooled analogously to Example 1 and a finely divided dispersion is formed, into which 7 g of carbon black with a particle size of 55 μm and a BET surface area of 50 m 2 / g are dispersed. The dispersion is then, as indicated in Example 1, optionally diluted with toluene and applied to a polyester film as the carrier material.
Herstellen der Beschichtungszusammensetzung:
- 25 g Vinylacetat-Copolymer mit Erweichungspunkt 95° C und einer Viskosität von 550 mPas bei 140° C
- 0,5 g Magnesiumstearat
- 1,0 g Harzesterprodukt mit einem Schmelzpunkt von 102-110° C un einer Viskosität von 250 mPas bei 140° C
- 15 g Isopropanol
- 70 g Xylol
werden, wie in Beispiel 1, heiß gelöst und in eine feinteilige Dispersion umgewandelt. Als Farbpigment dient eine Mischung aus 4 g Farbruß und 2 g Al.-Pulver, die in die Dispersion eingesetzt werden.Preparation of the coating composition:
- 25 g vinyl acetate copolymer with a softening point of 95 ° C and a viscosity of 550 mPas at 140 ° C
- 0.5 g magnesium stearate
- 1.0 g resin ester product with a melting point of 102-110 ° C and a viscosity of 250 mPas at 140 ° C
- 15 g isopropanol
- 70 g xylene
are dissolved hot as in Example 1 and converted into a finely divided dispersion. A mixture of 4 g of carbon black and 2 g of aluminum powder, which are used in the dispersion, serves as the color pigment.
Die Beschichtungsmasse wird auf ein Dünndruckpapier mit einem Auftragsgewicht von 5 g/m2 (atro) mit üblichen Einrichtungen aufgebracht und getrocknet.The coating composition is applied to a thin printing paper with an application weight of 5 g / m 2 (atro) using conventional equipment and dried.
Falls erwünscht, kann auf die Vorderseite des Trägermaterials noch eine thermosensitive Aufzeichnungsschicht aufgebracht werden. Die einen Farbildner und einen Akzeptor oder Farbentwickler und eine schmelzbare Komponente aufweisende Beschichtungsmasse wird mit üblichen Einrichtungen wie Rollrakeln oder dgl. gleichmäßig auf die Trägerbahn aufgebracht und getrocknet. Im Falle von Papier als Trägermaterial wird ein Rohpapier mit einer Dicke von 25-30 µm und eine Glätte nach Bekk von 200 bis 1000 Sek. verwendet. Die Opazität sollte derart sein, daß nach dem Aufzeichnen eine möglichst helle thermosensitive Frontschicht vorhanden ist.If desired, a thermosensitive recording layer can be applied to the front of the carrier material. The coating composition comprising a color former and an acceptor or color developer and a fusible component is applied uniformly to the carrier web and dried using conventional devices such as roller doctor blades or the like. In the case of paper as the base material, a base paper with a thickness of 25-30 µm and a Bekk smoothness of 200 to 1000 seconds is used. The opacity should be such that the brightest possible thermosensitive front layer is present after the recording.
Der Vorteil des erfindungsgemäßen Aufzeichnungs/übertragungsmaterials für Thermodrucker mit Wärmekopf besteht darin, daß durch Verwendung von den genannten Wachsen aus der Dispersion der Schmelzpunkt der Farbschicht wesentlich erhöht wird, und selbst bei Inbetriebnahme des Thermodruckers über einen längeren Zeitraum bleibt die übertragbarkeit und das übertragene Farbbild wesentlich konstanter in seiner Intensität und Gleichmäßigkeit als bei bekannten Materialien.The advantage of the recording / transfer material according to the invention for thermal printers with a thermal head is that by using the waxes mentioned from the dispersion, the melting point of the color layer is significantly increased, and even when the thermal printer is started up over a longer period of time, the transferability and the transferred color image remain essential more constant in intensity and uniformity than with known materials.
Claims (4)
dadurch gekennzeichnet,
daß die Heißschmelzschicht ein oxidiertes Polyäthylenwachs, ein Vinylacetat-Copolymer, ein modifiziertes Kohlenwasserstoffwachs oder eine Mischung derselben mit einer Erweichungstemperatur von 95-115° C und ein filmbildendes thermoplastisches Bindemittel im Gewichtsverhältnis 10:1 bis 30:1 enthält, so daß die Schicht einen Schmelzpunkt von 101-110° C aufweist.1. Heat-sensitive recording / transmission material for thermal printers with a thermal head with a hot-melt layer arranged on the back of a thin carrier material, which can be transferred by heat acting on the front, and which contains a color pigment, a wax as a binder and customary auxiliaries,
characterized,
that the hot melt layer, an oxidized polyethylene wax, a vinyl acetate copolymer, a modified K ohlenwasserstoffwachs or a mixture thereof having a softening temperature of 95-115 ° C and a film-forming thermoplastic binder in a weight ratio of 10: 1 to 30: 1 is such that the layer has a Has melting point of 101-110 ° C.
dadurch gekennzeichnet,
daß die Heißschmelzschicht in einer Menge von 2-12 g/m2 auf einem Trägermaterial mit einem Flächengewicht von 6-30 g/m2 vorhanden ist.2. A heat-sensitive recording / transfer material according to claim 1,
characterized,
that the hot melt layer in an amount of 2 - 1 2 g / m 2 on a support material having a basis weight of 6-30 g / m 2 is present.
dadurch gekennzeichnet,
daß es auf der Vorderseite eine an sich bekannte wärmeempfindliche Aufzeichnungsschicht, die einen zunächst farblosen Farbbildner, einen Farbentwickler und einen in der Wärme schmelzenden, ein oder beide Reaktionspartner lösenden Stoff enthält, aufweist.3. A heat sensitive recording / transfer material according to claim 1,
characterized,
that it has on the front side a known heat-sensitive recording layer which contains an initially colorless color former, a color developer and a heat-melting substance which dissolves one or both reactants.
daß man die schmelzbaren Wachse, das thermoplastische Bindemittel und einen Viskositätsregler in einem organischen Lösungsmittel oder Lösungsmittelgemisch löst, die Lösung unter Rühren schnell abkühlt oder in eine nichtlösende Flüssigkeit unter Bildung einer feinteiligen Dispersion einmischt, in die Dispersion das Farbpigment einmischt und die Beschichtungsmasse auf das Trägermaterial aufbringt und trocknet.4. A method for producing a heat-sensitive recording material according to claim 1, characterized in that
that the meltable waxes, the thermoplastic binder and a viscosity regulator are dissolved in an organic solvent or solvent mixture, the solution is rapidly cooled with stirring or mixed into a non-solvent liquid to form a finely divided dispersion, the color pigment is mixed into the dispersion and the coating composition onto the carrier material applies and dries.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84103623T ATE28060T1 (en) | 1983-04-27 | 1984-04-02 | HEAT-SENSITIVE RECORDING/TRANSMISSION MATERIAL. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3315249A DE3315249C2 (en) | 1983-04-27 | 1983-04-27 | Heat-sensitive recording/transfer material and process for its manufacture |
DE3315249 | 1983-04-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0126906A1 true EP0126906A1 (en) | 1984-12-05 |
EP0126906B1 EP0126906B1 (en) | 1987-07-01 |
Family
ID=6197488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84103623A Expired EP0126906B1 (en) | 1983-04-27 | 1984-04-02 | Heat-sensitive registration/transfer material |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0126906B1 (en) |
AT (1) | ATE28060T1 (en) |
DE (2) | DE3315249C2 (en) |
Cited By (4)
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GB2179168A (en) * | 1985-07-12 | 1987-02-25 | Canon Kk | Heat-sensitive transfer recording |
EP0214770A2 (en) * | 1985-08-12 | 1987-03-18 | General Company Limited | Heat sensitive transferring recording medium |
EP0268202A2 (en) * | 1986-11-19 | 1988-05-25 | Kao Corporation | Thermal transfer ink |
EP0395014A1 (en) * | 1989-04-27 | 1990-10-31 | Canon Kabushiki Kaisha | Thermal transfer material and thermal transfer recording method |
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JPS6147296A (en) * | 1984-08-13 | 1986-03-07 | General Kk | Multiple-time usable thermal transfer medium |
DE3520308A1 (en) * | 1985-06-07 | 1986-12-11 | Pelikan Ag, 3000 Hannover | METHOD FOR PRODUCING A THERMAL RIBBON TAPE FOR THERMAL TRANSFER PRINTING AND THE THERMAL RIBBON TAPE AVAILABLE AFTER THIS |
DE3812001A1 (en) * | 1988-04-11 | 1989-10-19 | Pelikan Ag | WRITING BAND AND METHOD FOR THE PRODUCTION THEREOF |
DE3825437C1 (en) * | 1988-07-27 | 1989-11-16 | Pelikan Ag, 3000 Hannover, De | |
JP2513830B2 (en) * | 1989-03-20 | 1996-07-03 | 富士通株式会社 | Thermal transfer ink sheet |
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DERWENT JAPANESE PATENTS REPORT, Band 5, Nr. 52, Section 3b, Seite 5; & JP-B-41 022 062 (N. KUWANO) 12.08.1960) * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2179168A (en) * | 1985-07-12 | 1987-02-25 | Canon Kk | Heat-sensitive transfer recording |
GB2179168B (en) * | 1985-07-12 | 1989-11-29 | Canon Kk | Heat-sensitive transfer recording method |
EP0214770A2 (en) * | 1985-08-12 | 1987-03-18 | General Company Limited | Heat sensitive transferring recording medium |
EP0214770A3 (en) * | 1985-08-12 | 1988-10-05 | General Company Limited | Heat sensitive transferring recording medium |
EP0268202A2 (en) * | 1986-11-19 | 1988-05-25 | Kao Corporation | Thermal transfer ink |
EP0268202A3 (en) * | 1986-11-19 | 1989-11-29 | Kao Corporation | Thermal transfer ink |
EP0395014A1 (en) * | 1989-04-27 | 1990-10-31 | Canon Kabushiki Kaisha | Thermal transfer material and thermal transfer recording method |
US5268052A (en) * | 1989-04-27 | 1993-12-07 | Canon Kabushiki Kaisha | Thermal transfer material and thermal transfer recording method |
US5389429A (en) * | 1989-04-27 | 1995-02-14 | Canon Kabushiki Kaisha | Thermal transfer material and thermal transfer recording method |
Also Published As
Publication number | Publication date |
---|---|
DE3315249A1 (en) | 1984-10-31 |
EP0126906B1 (en) | 1987-07-01 |
DE3315249C2 (en) | 1987-01-22 |
DE3464476D1 (en) | 1987-08-06 |
ATE28060T1 (en) | 1987-07-15 |
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