EP2993055A1 - Matériel d'enregistrement sensible à la chaleur en forme de bande doté d'une couche de protection - Google Patents

Matériel d'enregistrement sensible à la chaleur en forme de bande doté d'une couche de protection Download PDF

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Publication number
EP2993055A1
EP2993055A1 EP14183864.9A EP14183864A EP2993055A1 EP 2993055 A1 EP2993055 A1 EP 2993055A1 EP 14183864 A EP14183864 A EP 14183864A EP 2993055 A1 EP2993055 A1 EP 2993055A1
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EP
European Patent Office
Prior art keywords
layer
recording material
heat
sensitive recording
material according
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
Application number
EP14183864.9A
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German (de)
English (en)
Other versions
EP2993055B1 (fr
Inventor
Diana Valentina Becerra Siabato
Lena-Maria Jung
Martin Dr. Schreer
Gerhard Dr. Stork
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi HiTec Paper Europe GmbH
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Mitsubishi HiTec Paper Europe GmbH
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Application filed by Mitsubishi HiTec Paper Europe GmbH filed Critical Mitsubishi HiTec Paper Europe GmbH
Priority to EP14183864.9A priority Critical patent/EP2993055B1/fr
Priority to ES14183864T priority patent/ES2731553T3/es
Priority to EP19156809.6A priority patent/EP3517309A1/fr
Publication of EP2993055A1 publication Critical patent/EP2993055A1/fr
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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
    • B41M5/36—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties
    • B41M5/366—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties using materials comprising a polymeric matrix containing a polymeric particulate material, e.g. hydrophobic heat coalescing particles
    • 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
    • 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
    • B41M2205/36—Backcoats; Back layers
    • 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
    • B41M2205/38—Intermediate layers; Layers between substrate and imaging layer
    • 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
    • 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
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • 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
    • B41M5/41—Base layers supports or substrates
    • 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
    • B41M5/423—Intermediate, backcoat, or covering layers characterised by non-macromolecular compounds, e.g. waxes
    • 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

Definitions

  • the invention relates to a sheet-like heat-sensitive recording material having at least a first layer and a first layer at least partially covering the second layer, wherein the sheet-like heat-sensitive recording material proposed here additionally comprises a second layer at least partially covering the protective layer.
  • the web-shaped heat-sensitive recording material proposed on this page takes environmental-friendly aspects into account to a particular extent.
  • Heat-sensitive recording materials have been known for many years and enjoy a generally unbroken popularity, which, among other things, is due to the fact that their use for the ticket and / or purchase document issuing businessman is associated with great advantages. Since the color-forming components are contained in the recording material itself in the known color-reactive recording materials attributable to the heat-sensitive recording method, the toner and color-cartridge-free thermal printers, which in their function no longer need to be regularly monitored by anyone, can be used in large numbers be set up. Thus, this innovative technology has largely prevailed, especially in public transport and retail.
  • the inventors considered the EP 0 512 114 A1 That as a recording material for a tachograph at least 2-layer sheet proposed with a colored substrate to which an opaque layer from an aqueous suspension containing polymer particles is plotted.
  • a sheet of a paper with a black topcoat is disclosed, wherein paper including topcoat together serve as a colored support and onto which an opaque layer of hollow body pigments is spread.
  • the layer containing the hollow body pigment is scratched open and the underlying black topcoat becomes visible as a typeface.
  • the manipulation of the hollow body pigments to form a typeface their removal which is very easy in their involvement in the top coat due to the low degree of interconnectedness within the top coat having them.
  • the protective layer itself can be applied by means of conventional brushing, for which, inter alia, a coating color is usable, as described above and for which a surface-related mass in a range of 1.5 to 4.5 g / m 2 is preferred, or the protective layer may alternatively be printed. Processing technology and in terms of their technological properties are particularly suitable such protective layers which are curable by means of actinic radiation.
  • actinic radiation UV or ionizing radiation, such as electron beams to understand.
  • a particularly preferred second embodiment alternative to the first embodiment described above for a completely or partially covering the second layer protective layer provides as binder a polyvinyl alcohol, wax as a zinc stearate, as a pigment aluminum hydroxide or alternatively also silicon dioxide and one or more crosslinkers before, with particularly preferred Quantities for such a protective layer are given in Table 1 below: ⁇ u> Table 1: ⁇ / u> product % By weight [atro] aluminum hydroxide 10 - 25 polyvinyl alcohol 55 - 70 zinc stearate 7 - 9 crosslinkers 6 - 7
  • a coating composition comprising as a binder at least one polyvinyl alcohol and the at least one crosslinking agent. It is preferred if the polyvinyl alcohol of the protective layer according to the third embodiment variant is modified with carboxyl, diacetone or in particular silanol groups. Also mixtures of different Carboxyl-, diacetone- or silanol-modified polyvinyl alcohols are preferably usable.
  • the at least one crosslinker for the protective layer according to the third embodiment is preferably selected from the group consisting of boric acid, polyamines, epoxy resins, dialdehydes, formaldehyde oligomers, polyamine epichlorohydrin resin, adipic dihydrazide and melamine formaldehyde. It is also possible to use mixtures of different crosslinkers.
  • the weight ratio of the modified polyvinyl alcohol to the crosslinker is in a range from 20: 1 to 5: 1, and more preferably in a range from 12: 1 to 7: 1 Ratio of the modified polyvinyl alcohol to the crosslinker in the range of 100 parts by weight to 8 to 11 parts by weight.
  • the at least one inorganic pigment is preferably selected from the group consisting of silicon dioxide bentonite, aluminum hydroxide, calcium carbonate, kaolin and mixtures of said inorganic pigments.
  • the protective layer according to this third embodiment with a basis weight in a range of 1.0 g / m 2 to 6 g / m 2 and particularly preferably from 1.2 g / m 2 to 3.8 g / m 2 apply.
  • the protective layer is preferably formed in one layer, without being limited in this regard.
  • a protective layer-like sheet-like heat-sensitive recording material is equipped as a label with back (self) adhesive layer.
  • the usual construction then provides a web-shaped substrate, preferably a paper web, which has a front side and a rear side opposite it. On the reverse side, the sheet-shaped heat-sensitive recording material then has the (self) adhesive layer.
  • a first layer, a second layer at least partially covering the first layer and a protective layer at least partially covering the second layer are applied to the substrate in this order.
  • the adhesive layer may be covered with a release material such as a silicone-containing release paper or the outer layer formed on the second layer protective layer of the recording material according to the invention is provided with an additional release layer, preferably by means of a so-called five-Walzenêtwerks is applied.
  • the release layer in this case has release agents, preferably based on silicone oil.
  • the release layer is curable or crosslinkable under the influence of high-energy radiation, such as UV or electron radiation.
  • high-energy radiation such as UV or electron radiation.
  • the monomers or prepolymers used for the preparation of this layer must contain additives of photoinitiators in a known manner.
  • electron beam curing a particularly uniform over its cross-section, that is cured release layer could be achieved.
  • the heat-sensitive recording material In order to form the heat-sensitive recording material according to the invention, its first layer with the intensive coloring facing the second layer is first covered with high opacity, that is to say preferably almost opaque, by the second layer with the hollow-body pigments. Because of the opacity of the second layer caused by the hollow-body pigments, no or only little of the coloring of the first layer can be determined.
  • heat in the form of any pattern which means in the form of whatever typeface are the hollow body pigments melted the second layer, for example by means of the printhead of a thermal printer, as well as the statements in paragraph [0006] can be seen.
  • the fusion or collapse of the hollow body pigments results in an increased light transmission of the second layer.
  • the second layer there remain still irregular empty spaces between the molten hollow body pigments and unmelted components which maintain an albeit reduced opacity of this second layer.
  • the preferred additional incorporation of at least one fatty acid and / or at least one thermosensitive sensitizer in the second layer significantly improves the effect of reducing confused light scattering because the at least one fatty acid and / or the at least one thermosensitive sensitizer form the unmelted components of the envelop the second layer and fill the empty spaces within the second layer.
  • Fatty acid amides and in particular hydroxymethylated fatty acid amides are considered to be preferred among the fatty acids preferably provided for incorporation into the second layer, fatty acid amides and hydroxymethylated fatty acid amides in a preferred embodiment of the present invention also being used in combination, in particular in an amount by weight (%) the second layer related mixing ratio of 1: 2 to 2: 1, can be used within the second layer.
  • fatty acids which are considered to be preferred according to the invention are stearic acid and palmitic acid, which can also be used in particular in a combined manner within the second layer.
  • fatty acid amides is preferably stearic acid amide
  • hydroxymethylated fatty acid amides is preferably Methylolstearinklamid.
  • the combination of stearinamide and Methylolstearinamid within the second layer is a preferred embodiment for the design of the second layer.
  • the hollow body pigments within the second layer have a wall of plastic, ideally of thermoplastic resin, which melts under high heat input.
  • This thermoplastic resin or the hollow body pigment outer wall itself preferably comprises (meth) acrylonitrile copolymer, polyvinyl chloride, polyvinylidene chloride, polystyrene, styrene acrylate, styrene (meth) acrylate copolymer, polyacrylonitrile, polyacrylic acid ester or else the mixture of at least two of the components mentioned ,
  • pigment mixtures of different hollow body pigments for the second layer are conceivable.
  • so-called "cup-shaped" pigments in particular also apply as hollow-body pigments.
  • thermoplastic resin of the hollow body pigment outer wall in a range from 35 ° C to less than or equal to 200 ° C and preferably in a range from 75 ° C to less than or equal to 120 ° C has been found advantageous because below temperatures of 35 ° C, the wall of the hollow body pigments is no longer sufficiently stable at room temperature. Above temperatures of 200 ° C, there are handling problems of over heating the surface of the recording material.
  • the preferred temperature range between 75 ° C to less than or equal to 120 ° C provides the simplest conditions in terms of processing quality and speed in the Forming the second layer and in its use to create a typeface by merging the hollow body pigments in the form of this typeface, which is not limited to the purposes of the present invention to the mere reproduction of alphanumeric characters, but just as markings of any kind, such as characters, Icons or monochrome or grayscale images.
  • Suitable binders for incorporation into the second layer of the thermosensitive recording material proposed herein are, for example, water-soluble binders such as starch, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, gelatin, casein, polyvinyl alcohols, modified polyvinyl alcohols, ethylene-vinyl alcohol copolymers, sodium polyacrylates, acrylamide-acrylate copolymers, acrylamide Acrylate-methacrylate terpolymers and alkali metal salts of styrene-maleic anhydride copolymer or ethylene-maleic anhydride copolymer, which binders can be used alone or in combination with one another; Also water-insoluble latex binders such as styrene-butadiene copolymers, acrylonitrile-butadiene copolymers and methyl acrylate-butadiene copolymers are suitable as binders for incorporation into the second layer.
  • water-soluble binders
  • the second layer generally comprises lubricants, which are preferably waxes such as, and most preferably, zinc stearates and paraffin waxes, as well as other additives, including but not limited to wetting agents and defoamers.
  • lubricants which are preferably waxes such as, and most preferably, zinc stearates and paraffin waxes, as well as other additives, including but not limited to wetting agents and defoamers.
  • the second layer of the proposed heat-sensitive recording material As a base color for the second layer of the proposed heat-sensitive recording material is particularly white, since heat-sensitive recording materials, especially in their intended and preferred use as a receipt and / or label and / or ticket in white appearance usually are desired in the market. Also, the non-fused hollow body pigments, as long as no further coloring components of the second layer are admixed, appear white.
  • the sheet-shaped heat-sensitive recording material proposed here can be used without limitation also with a particularly light coloration of the second layer and is therefore considered as one possible form of the proposed heat-sensitive recording material.
  • the first layer is a mass-dyed web-shaped substrate, to which the substrate in a preferred embodiment carbon black components and / or dyes are added in such an amount that the substrate has an intense color
  • paper is generally considered to be a preferred substrate in the range of 35 to 180 g / m 2 in the range of the basis weight in the sense of the present invention.
  • the heat-sensitive recording material proposed here according to the second possible embodiment has a colored intermediate layer as described above, it is possible, but no longer necessary, for the substrate bearing the intermediate layer as the first layer to have a coloration.
  • the dyed intermediate layer as the first layer can be applied by printing technology to a substrate acting as the base support, for example in the form of paper or film.
  • this colored intermediate layer is preferably applied to a substrate, wherein it is particularly preferred if the colored Intermediate layer is applied with gratis coating devices, as they represent, for example, roller coater, doctor blade or (roll) doctor blade coating.
  • the colored intermediate layer can make a positive contribution to the leveling of the substrate surface, which on the one hand reduces the amount of coating material necessarily applied to form the second layer and on the other hand, the function of the second layer is supported.
  • a fairly wide range between 2 and 10 g / m 2 and preferably between 2 and 7 g / m 2 has proven to be particularly suitable, especially when applied with a doctor blade between 2 and 4 g / m 2 , while in printing technical order of the colored intermediate layer as a first layer values well below 2 g / m 2 then with layer thicknesses preferably between 0.5 .mu.m and 1.5 .mu.m are possible.
  • the smoothness (according to Bekk) of the first layer a range of 200 sec to 500 sec has proven to be suitable, which is why such a range is considered to be preferred in the context of the present invention.
  • the particularly preferred higher values between 300 sec and 500 sec are achieved by smoothing the substrate with applied first layer, for example by means of a two-, three- or Mehrwalzenglättwerks or even by means of a calender.
  • inorganic oil-absorbing white pigments preferably in a range from 20 to 45% by weight, based on the total weight of the intermediate layer, are added to the dyed intermediate layer , which are of great relevance for the external appearance and for the improvement of the later printability.
  • Preferred inorganic inorganic pigments of the intermediate layer have been those selected from the group comprising natural and calcined kaolin, silica, bentonite, calcium carbonate and aluminum hydroxide, in particular boehmite here. Also mixtures of several different types of inorganic white pigments are conceivable.
  • the particle size of the inorganic white pigments present in the colored interlayer is preferably in a range of less than 2 ⁇ m. Pigments having a particle size distribution of from 34 to 40% by weight of less than 1 ⁇ m and from 57 to 63% by weight of less than 2 ⁇ m, in each case based on the total amount of white pigments in the intermediate layer, have proved to be advantageous.
  • the intermediate layer preferably has carbon black constituents and / or dyes in an appropriate amount, in the case of carbon black pigments preferably in a range from 30 to 40% by weight, based on the total weight of the intermediate layer.
  • Carbon black pigments having an average particle size of 50 nm have proved to be advantageous.
  • the intermediate layer dyed as the first layer and additionally pigmented contains at least one binder, preferably based on a synthetic polymer, with styrene-butadiene latex, for example, giving particularly good results.
  • a synthetic binder with the admixture of at least one natural polymer is a particularly suitable embodiment.
  • a binder is highly saponified polyvinyl alcohol.
  • Binder total amount of white pigments and carbon black pigments within the pigmented intermediate layer between 1: 3 and 1: 4 is a particularly suitable embodiment.
  • the task of the first intermediate layer for the subsequently applied second intermediate layer to ensure a particularly flat surface, so that the basis weight of the second intermediate layer is particularly low, preferably in a range between 1 and 8 g / m 2 and even better between 1 and 5 g / m 2 , especially when applied with a doctor blade very particularly preferably between 1.5 and 3.0 g / m 2 , can be selected.
  • the amount of carbon black pigments which can lead to difficulties within the recycling, can be reduced.
  • the first intermediate layer according to the third embodiment mainly comprises white pigments as disclosed in paragraph [0042], binders and others also usual additives.
  • Decisive is their job with a leveling coating device, such as with a doctor blade or (roller) doctor blade coating with subsequent treatment by means of calender and / or calender.
  • FIG. 1 shows the basic structure of the sheet-like heat-sensitive recording material according to the invention here omitting the protective layer (40) according to the invention with a first layer (1) having intense coloration - in this case uniformly black, represented by soot colors, for example - and a second layer covering the first layer (FIG. 2).
  • first layer (1) having intense coloration - in this case uniformly black, represented by soot colors, for example -
  • second layer covering the first layer FIG. 2
  • a different representation of translucent and opaque regions of the second layer (2) is dispensed with.
  • the first layer is a mass-dyed web-shaped substrate (11).
  • the second layer (2) is applied, for which in principle a range in terms of basis weight between 2 and 10 g / m 2 is considered to be preferred, as very particularly preferred is a range between 4 and 8 g / m 2 .
  • a basis weight of the second layer of less than 2 g / m 2
  • the coverage of the first layer is often no longer adequately ensured, whereas a second layer with a basis weight of well over 10 g / m 2 for economic reasons does not make sense.
  • FIG. 2 shows in this respect, a sheet-like heat-sensitive recording material according to the invention, wherein the recording material is designed in one of its simplest embodiments.
  • the second layer (2) whose hollow body pigments are fused by means of the print head of a thermal printer in the form of a typeface, is applied to a substrate (11) formed as a first layer here, for example with carbon black constituents for coloring the substrate.
  • the second layer (2) completely covers the subjacent substrate (11).
  • the second layer (2) is in turn covered by a protective layer (40).
  • FIG. 3 shows such an embodiment of the proposed heat-sensitive recording material, wherein the recording material in this case, a polyolefin-coated paper as a substrate (10) on which a pigmented intermediate layer (21) is applied as a first layer.
  • the recording material in this case, a polyolefin-coated paper as a substrate (10) on which a pigmented intermediate layer (21) is applied as a first layer.
  • This first layer is covered over the entire area by the second layer (2), whose hollow-chamber pigments are partially fused in the form of a typeface.
  • the second layer (2) is in turn covered by a protective layer (40).
  • the surface mass,% by weight (% by weight) and parts by weight (parts by weight) given in the specification and claims refer to the "atro" weight, respectively. absolutely dry parts by weight.
  • the relevant figures are calculated from the "lutro" weight, i. air-dry parts by weight, less the proportion by weight of water in the interior of the pigments as supplied.
  • the thus-finished heat-sensitive recording material is fed to a thermal printer.
  • the second layer hollow body pigments, along with the stearic acid amide and thermosensitive sensitizer, are melted by the print head of the thermal printer according to a predetermined check pattern to form areas in the second layer with fused components and filled intermediate areas and areas with unfused components and unfilled intermediate areas.
  • the thus prepared recording material thus has a very well recognizable, sharp-edged typeface on with blackened areas where the hollow body pigments are fused together in the second layer by the heat input of the printhead of the thermal printer.
  • the blackened areas originate from the uniform color of the intermediate layer, the color of which can be recognized by the transparent areas of the second layer with the hollow body pigments fused there.
  • the whiteness of the heat-sensitive recording material according to the invention is determined once with, once without UV, the measurements being carried out in accordance with the specifications of ISO 2469 / ISO 2470, with the proviso that in the measurements made here D65- Light is used at a viewing angle of 8 °.
  • the white measurements are carried out using a device of the type Elrepho 3000 (illuminant D 65/10). The values determined are 56% (with UV content) and 52% (without UV), which largely corresponds to a gray paper, but in view of this coating and functional technology this is considered to be acceptable and salable.
  • the respective optical print density is determined before and after the formation of a black-and-white checkered thermo-printout with an Atlantek 400 device from Viex (USA) using a thermal head with a resolution of 300 dpi and an energy per unit area of 16 mJ / mm 2 is used.
  • the respectively non-printed area or the respective thermo-printed area is measured at three locations with the Gretag MacBeth Densitometer TYPE D19C NB / U densitometer (Gretag MacBeth, 8105 Regensdorf, Switzerland).
  • the unprinted areas have a mean optical density of 0.33 ODU (Optical Density Units), for the thermo-printed areas a mean optical density of 1.22 ODU. With a difference of 0.89 ODU as the contrast between printed and unprinted areas, the present invention proves that a skilled typeface is easy to see, underscoring the value of the present invention.
  • ODU Optical Density Units

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
EP14183864.9A 2014-09-06 2014-09-06 Matériel d'enregistrement sensible à la chaleur en forme de bande doté d'une couche de protection Active EP2993055B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14183864.9A EP2993055B1 (fr) 2014-09-06 2014-09-06 Matériel d'enregistrement sensible à la chaleur en forme de bande doté d'une couche de protection
ES14183864T ES2731553T3 (es) 2014-09-06 2014-09-06 Material de registro termosensible en forma de banda con capa protectora
EP19156809.6A EP3517309A1 (fr) 2014-09-06 2014-09-06 Matériel d'enregistrement sensible à la chaleur en forme de bande

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14183864.9A EP2993055B1 (fr) 2014-09-06 2014-09-06 Matériel d'enregistrement sensible à la chaleur en forme de bande doté d'une couche de protection

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP19156809.6A Division-Into EP3517309A1 (fr) 2014-09-06 2014-09-06 Matériel d'enregistrement sensible à la chaleur en forme de bande
EP19156809.6A Division EP3517309A1 (fr) 2014-09-06 2014-09-06 Matériel d'enregistrement sensible à la chaleur en forme de bande

Publications (2)

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EP2993055A1 true EP2993055A1 (fr) 2016-03-09
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Cited By (8)

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WO2019121733A1 (fr) 2017-12-22 2019-06-27 Mitsubishi Hitec Paper Europe Gmbh Papier barrière recyclable
WO2019219391A1 (fr) * 2018-05-14 2019-11-21 Papierfabrik August Koehler Se Revêtements en papier thermoréactifs à base de dérivés de cellulose
EP3508545B1 (fr) 2017-12-22 2021-05-05 Mitsubishi HiTec Paper Europe GmbH Substrat de libération recyclable
EP3957489B1 (fr) 2020-08-19 2022-11-02 Mitsubishi HiTec Paper Europe GmbH Matière d'enregistrement thermosensible sans générateur
DE102021115909A1 (de) 2021-06-18 2022-12-22 Koehler Innovation & Technology Gmbh Wärmeempfindliche Aufzeichnungsmaterialien
WO2023017127A3 (fr) * 2021-08-11 2023-05-19 Koehler Innovation & Technology Gmbh Support d'impression thermosensible
DE102021133333A1 (de) 2021-12-15 2023-06-15 Koehler Innovation & Technology Gmbh Bahnförmiges wärmeempfindliches Aufzeichnungsmaterial
EP3943312A4 (fr) * 2019-03-20 2023-07-12 Matsumoto Yushi-Seiyaku Co., Ltd. Particule de résine creuse pour matériau d'impression thermosensible

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WO1992013723A1 (fr) * 1991-02-12 1992-08-20 Scimat Limited Support d'enregistrement
US6043193A (en) * 1998-06-23 2000-03-28 Eastman Kodak Company Thermal recording element
EP1778499B1 (fr) 2005-06-22 2008-06-18 Mitsubishi HiTec Paper Flensburg GmbH Caracteristique de securite pour materiaux de reproduction
US20070065749A1 (en) * 2005-09-21 2007-03-22 Vladek Kasperchik Radiation-markable coatings for printing and imaging
WO2012145456A1 (fr) 2011-04-20 2012-10-26 Rohm And Haas Company Matériau d'enregistrement

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019121733A1 (fr) 2017-12-22 2019-06-27 Mitsubishi Hitec Paper Europe Gmbh Papier barrière recyclable
EP3508545B1 (fr) 2017-12-22 2021-05-05 Mitsubishi HiTec Paper Europe GmbH Substrat de libération recyclable
US11365516B2 (en) 2017-12-22 2022-06-21 Mitsubishi Hitec Paper Europe Gmbh Recyclable release substrate
WO2019219391A1 (fr) * 2018-05-14 2019-11-21 Papierfabrik August Koehler Se Revêtements en papier thermoréactifs à base de dérivés de cellulose
US11975553B2 (en) 2018-05-14 2024-05-07 Papierfabrik August Koehler Se Thermoresponsive paper coatings based on cellulose derivatives
EP3943312A4 (fr) * 2019-03-20 2023-07-12 Matsumoto Yushi-Seiyaku Co., Ltd. Particule de résine creuse pour matériau d'impression thermosensible
EP3957489B1 (fr) 2020-08-19 2022-11-02 Mitsubishi HiTec Paper Europe GmbH Matière d'enregistrement thermosensible sans générateur
DE102021115909A1 (de) 2021-06-18 2022-12-22 Koehler Innovation & Technology Gmbh Wärmeempfindliche Aufzeichnungsmaterialien
WO2022262908A2 (fr) 2021-06-18 2022-12-22 Koehler Innovation & Technology Gmbh Matériaux d'impression thermosensibles
WO2023017127A3 (fr) * 2021-08-11 2023-05-19 Koehler Innovation & Technology Gmbh Support d'impression thermosensible
DE102021133333A1 (de) 2021-12-15 2023-06-15 Koehler Innovation & Technology Gmbh Bahnförmiges wärmeempfindliches Aufzeichnungsmaterial
WO2023110951A1 (fr) 2021-12-15 2023-06-22 Koehler Innovation & Technology Gmbh Matériau d'enregistrement thermosensible en forme de bande

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EP2993055B1 (fr) 2019-04-03
EP3517309A1 (fr) 2019-07-31

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