Abstract: Description of a thermo-transfer ribbon having a carrier, with a thermo-transfer color (layer) formed on one side of the carrier, and, if applicable, with additional layers, whereby the thermo-transfer color contains in addition to a coloring substance, an amorphous polymer and a wax. The thermo-transfer ribbon is characterized in that the thermo-transfer color contains a polar polyethylene wax as binding agent and an amorphous polymer, which has a mol mass weight mean Mw of more than approximately 10000 and a numerical mol mass mean Mn of less than approximately 6000. It proves itself during high energy level printing of a thermo-printer as scratch- and solvent-resistant, specifically on plastic labels.

Abstract: A thermo-transfer ribbon with a carrier, a first thermo-transferable layer formed on one side of the carrier and a second thermo-transferable layer formed on the first thermo-transferable layer, wherein (i) the first thermo-transferable layer contains a luminescent pigment, wax(es) having a melting point of approximately 70 to 110° C. and approximately 1-22% by weight of a polymer wax plasticizer having a glass temperature Tg of −30 to +70° C., (ii) the second thermo-transferable layer contains a non-luminescent pigment, a wax compatible polymer binder and approximately 5 to 30% by weight of wax and/or wax-like substance, (iii) the second thermo-transferable layer has a melting enthalpy DH of approximately 10 to 80 J/g and (iv) in the remission spectrum of the non-luminescent pigment in the wave length range of the light emitted by the luminescent pigment there is a remission maximum or an ascending flank of remission.

Abstract: A description is given of a thermo-transfer ribbon having a customary carrier, with a wax-bonded layer of a thermo-transfer color formed on one side of the carrier, and a resin-bonded separation layer located between carrier and wax-bonded layer, characterized in that at least the resin-bonded separation layer A) contains a wax-soluble polymer and the wax-bonded layer B) of the thermo-transfer color contains less than approximately 8% by weight, specifically 0 to approximately 5% by weight, of wax-soluble polymer, whereby the waxes of the wax-bonded layer B) are narrowly cut waxes with melting- and coagulation points positioned in close proximity to each other. The benefits of said thermo-transfer color consist in that there occur no differences in the quality of the print, either with “cold” or “hot” print, and specifically also on uncoated paper with high degree of roughness.

Abstract: Description of a thermo-transfer ribbon with a customary carrier having a wax-bonded layer of a thermo-transfer color on one side of the carrier and with a wax-bonded separation layer located between carrier and the wax-bonded layer. The thermo-transfer ribbon distinguishes itself in that the wax-bonded layer B) of the thermo-transfer color contains a wax-soluble polymer and the wax-bonded separation layer A) contains less than approximately 20% by weight of a polymer wax plasticizer and has a glass temperature Tg of −30 to +70° C. The benefits of said thermo-transfer ribbon are based in that the print quality as well as the scratch and solvent resistance are excellent.

Abstract: A heat transfer tape has a usual substrate, a layer of heat transfer ink on one side of the substrate and a separation layer between the substrate and the layer of heat transfer ink. The separation layer is waxed and contains waxes having a melting point from about 70 to 110.degree. C., as well as a wax softening polymer with a glass transition temperature Tg from -30 to -70.degree. C. The layer of heat transfer ink contains at least 20 wt % natural resin, modified natural resin and/or synthetic resin. This heat transfer tape gives particularly scratch- and solvent-resistant prints.

Abstract: Thermo transfer ribbon with a customary carrier and arranged thereon is a first thermo-transferable layer, containing wax having a melting point of approximately 70 to 110.degree. C. and approximately 1 to 22 percent by weight of a polymer wax plastifier having a glass temperature Tg of -30 to +70.degree. C.; and a second thermo transferable layer, containing coloring substances, wax-compatible polymer binding agent and approximately 5 to 30 percent by weight of wax and/or wax-like substance, whereby the thermo-transferable layer (ii) has a melting enthalpy delta-H of approximately 10 to 80 J/g.

Abstract: Description of a thermo-transfer color ribbon with (a) a carrier, (b) a layer of a first thermo-transfer color formed on one side of the carrier, containing a luminescent pigment and (c) a layer of a second thermo-transfer color formed on the first thermo-transfer color layer containing a non-luminescent pigment, whereby, where needed, additional layers may be located between the carrier and the layer of the first thermo-transfer color and/or the layer of the first and the second thermo-transfer color. Said thermo-transfer ribbon is characterized in that in the remission spectrum of the non-luminescent pigment, in the wave length range of the light emitted by the luminescent pigment there is a remission maximum or an ascending flank of remission. The thermo-ransfer ribbon furnishes print-outs of high optical density without affecting the luminesce output of the luminescent pigment.

Abstract: The invention relates to a thermo-transfer ribbon with a customary carrier, with a wax-based layer of a thermo-transfer color formed on one side of the carrier and an additional layer located between the carrier and the wax-based layer. This thermo-transfer ribbon distinguishes itself in that the additional layer is a wax-based separation layer A) for the wax-based layer B) of the thermo-transfer color wherein the waxes of the wax-based layer have a melting point of approximately 70.degree. C. to 110.degree. C., and wherein in both layers A) and B) a wax-soluble polymer is finely dispersed. The advantages of this thermo-transfer ribbon include the fact that there is no need for development of a topcoat of a dual-layer thermo-transfer color, and that satisfactory prints are obtained with the thermo-printing process.

Abstract: A thermal transfer meltable color layer receives a protective polymer coating on the side thereof, to be contacted with the thermal printing head to hold the meltable color material away from the printing head, thereby forming a thermal printing ribbon without the need for a support foil.

Abstract: A thermocolor ribbon, especially a thermocarbon ribbon has a wax and/or plastic binder which melts at a thermal printer temperature to transfer the melt color layer consisting of that binder and polymer particles containing a coloring agent embedded in that binder. The polymer particles melt at a higher temperature to which the thermal print symbol is subjected, e.g. by radiant heating, to fix the image and distribute the coloring agent of the particles in the entire symbol transferred.

Abstract: The color transfer density of a thermocarbon ribbon can be improved by forming the wax phase of a melt color layer of such a ribbon so that it contains a paraffin with a hardening temperature of about 50 to 110.degree. C. and at least one ethylene-vinylacetate wax forming a eutectic with a paraffin.

Abstract: A release layer effective for both wax-bonded and plastic-bonded or wax and plastic-bonded melt color layers is provided in a thermocolor, e.g. thermocarbon, ribbon in the form of a substance capable of splitting off water at the thermal printing temperature dispersed in a binder.

Abstract: A thermal transfer meltable color layer receives a protective polymer coating on the side thereof, to be contacted with the thermal printing head to hold the meltable color material away from the printing head, thereby forming a thermal printing ribbon without the need for a support foil.

Abstract: A thermal transfer ribbon, suitable for printing of multiple sharp impressions, employs as the binder for its fusible colorant layer an olefin/vinyl ester copolymer, particularly an ethylene/vinyl acetate copolymer having the ratio of vinyl acetate units to ethylene units of about 0.01 to 0.07. The ribbon is conveniently made by coating a solution of this polymer, with the colorant substance dissolved or dispersed therein, onto a substrate such as a synthetic polyester film.

Abstract: The reflectivity and shininess of print applied in a thermal-printing process using a thermocolor or thermocarbon ribbon can be reduced by providing a nonmeltable intermediate organic layer between the thermocolor transfer layer and the carrier which comprises a water-soluble material in the form of an aminoplast, a starch or cellulose derivative or a polymer such as polyvinylpyrrolidone, polyvinylalcohol, polyacrylate or polymethylacrylate.

Abstract: A thermocarbon ribbon having a foil-type carrier and a color transfer layer or melt color has its adhesion for the the paper substrate increased by an adhesion coating applied to the color transfer layer. The adhesion layer consists of a parafin wax matrix in which a sticky hydrocarbon resin is dispersed in finely divided form so that during printing, when the temperature of the adhesion layer is raised, the paraffin wax melts, dissolves the finely divided hydrocarbon resin and allows the sticky characteristic of the latter to increase adhesion of the color transfer material to the paper.

Abstract: A thermocarbon ribbon is formed by emulsifying two mutually incompatible thermoplastic polymers melting at heat-transfer temperatures of a wax. The emulsion containing a pigment is applied to a ribbon support and the solvent is evaporated. The ribbon has multi-strike capabilities and improved sharpness of transfer to rough paper resulting from the presence in the solid continuous phase of beads or microspheres of a dispersed phase, both phases being formed by the polymers.

Abstract: A thermocarbon ribbon is formed by emulsifying two mutually incompatible thermoplastic polymers melting at heat-transfer temperatures of a wax. The emulsion containing a pigment is applied to a ribbon support and the solvent is evaporated. The ribbon has multi-strike capabilities and improved sharpness of transfer to rough paper resulting from the presence in the solid continuous phase of beads or microspheres of a dispersed phase, both phases being formed by the polymers.

Abstract: A reusable thermocolor ribbon for thermal transfer printing is described comprising a layer of a melt-applied color on one side of a plastic foil as carrier, where the melt-applied color contains a wax or wax-like substance, a pigment and an organic binder. A coating liquid which contains a thermoplastic binding agent in solution and the meltable wax or wax-like substance in finely dispersed solid form, is applied to the carrier of the thermocolor ribbon, where the coating liquid represents as solvent agent a mixture of a solvent and non-solvent for the thermoplastic binding agent at room temperature. The non-solvent/solvent mixture is evaporated while simultaneously its solvent capability for the plastic binding agent is reduced. This thermocolor ribbon can be used more than 20 times without impairment of the print quality. A process for preparing the thermocolor ribbon is also detailed herein.

Abstract: A thermocolor ribbon comprises a plastic support foil, a fusible color layer attached to one side of the plastic support foil and an organic coating layer covering the other side of the plastic support foil. The organic coating layer is composed of a nonfibrous, pressure-stable wax or waxlike substance. A process for making the thermocolor ribbon from a plastic support foil having a fusible color layer thereon comprises application of a solution containing an organic coating material to the side of the foil not having the fusible color layer bonded thereto, followed by solvent evaporation. Alternatively, the side of the support foil bearing the fusible color is brought into intimate contact with opposite side of the foil whereupon the latter is heated for a time sufficient for transport of material from the fusible color layer to the uncoated side of the foil to form the organic coating layer thereon.