EP2033801B1 - Wärmeempfindliches Aufzeichnungsmaterial - Google Patents

Wärmeempfindliches Aufzeichnungsmaterial Download PDF

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Publication number
EP2033801B1
EP2033801B1 EP07017651A EP07017651A EP2033801B1 EP 2033801 B1 EP2033801 B1 EP 2033801B1 EP 07017651 A EP07017651 A EP 07017651A EP 07017651 A EP07017651 A EP 07017651A EP 2033801 B1 EP2033801 B1 EP 2033801B1
Authority
EP
European Patent Office
Prior art keywords
heat
sensitive recording
recording material
material according
recording layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07017651A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2033801A1 (de
Inventor
Gerhard Dr. Stork
Annette Schreiber
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 HiTech Paper Flensburg GmbH
Stora Spezialpapiere GmbH
Original Assignee
Mitsubishi HiTech Paper Flensburg GmbH
Stora Spezialpapiere GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi HiTech Paper Flensburg GmbH, Stora Spezialpapiere GmbH filed Critical Mitsubishi HiTech Paper Flensburg GmbH
Priority to DE502007002945T priority Critical patent/DE502007002945D1/de
Priority to ES07017651T priority patent/ES2339167T3/es
Priority to EP07017651A priority patent/EP2033801B1/de
Priority to AT07017651T priority patent/ATE458621T1/de
Priority to PCT/EP2008/007150 priority patent/WO2009033589A1/de
Publication of EP2033801A1 publication Critical patent/EP2033801A1/de
Application granted granted Critical
Publication of EP2033801B1 publication Critical patent/EP2033801B1/de
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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
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/333—Colour developing components therefor, e.g. acidic compounds
    • B41M5/3333—Non-macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/337—Additives; Binders
    • B41M5/3375—Non-macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/333—Colour developing components therefor, e.g. acidic compounds
    • B41M5/3333—Non-macromolecular compounds
    • B41M5/3335—Compounds containing phenolic or carboxylic acid groups or metal salts thereof

Definitions

  • the invention relates to a heat-sensitive recording material having a substrate which carries a heat-sensitive recording layer on at least one of its two sides.
  • the at least one heat-sensitive recording layer has a dye precursor and a color acceptor which react color-forming with each other under the action of heat.
  • the invention also relates to the use of the proposed heat-sensitive recording material as a ticket to the same extent.
  • Heat-sensitive recording materials of the type described above with, for example, a sheet of paper, a synthetic paper sheet or a plastic film as a substrate are known since the early years of chemically reactive recording materials and enjoy a constantly growing popularity, which is due, inter alia, that their use in particular as a ticket for the Ticket issuing is associated with great benefits. Because the color-forming components are stuck in the recording material itself in the heat-sensitive recording method, the toner and ink cartridge-free printers, which need no more control in their function, can be set up in large numbers. Thus, this innovative technology has prevailed especially in public passenger transport, buses and trains as well as in air traffic, stadium and museum funds and parking ticket issuers.
  • thermosensitive recording material containing at least the components of two color-forming systems to form an irreversible printed image, one being a chelate-type system and the other being a conventional leuco-dye system.
  • sulfonylureas including N- (p-toluenesulphonyl) -N'-3- (p-toluenesulphonyl-oxy-phenyl) urea, mentioned, which inevitably combined with a second developer to fulfill the task Need to become.
  • a disadvantage of the known recording material of the type described above is the complicated use of two color-forming systems, which makes the recording material known in this way cost-intensive. Also, the document mentioned no hint that the known recording material is particularly good to print. However, it is precisely for this purpose that a task aspect for the new heat-sensitive recording material is aimed.
  • the inventors recognized that with the intended use of the new recording material as a ticket, there are increased market demands for good printing in flexo and offset printing on the at least one side of the recording material having the thermosensitive recording layer. Further, and of paramount importance to the new recording material, it is said to have excellent resistance to environmental influences such as ethanol, water and plasticizer, as well as excellent lightfastness with sufficient sensitivity to supplied heat in the form of a thermal print image.
  • a heat-sensitive recording material which has only one side of a heat-sensitive recording layer.
  • a heat-sensitive recording material to be considered which in addition to the good printability and excellent resistance to environmental influences (especially ethanol) and light on the side with the heat-sensitive recording layer also has a very good back-printability
  • the front and back coatings of a centrally positioned substrate influence each other.
  • the focus of the invention is not only to be directed to the side of the new recording material having the heat-sensitive recording layer but also to its opposite rear side.
  • the new recording material should be able to do without any further protective layer coverage as far as possible, but alternatively a recording material is conceivable which manages with a simply constructed protective layer on the recording layer.
  • 2- (2H-benzotriazol-2-yl) -p-cresol according to the formula (2) is the sole sensitizer in the heat-sensitive recording layer.
  • heat-sensitive recording materials having benzotriazole-based UV-absorbing components from the EP 0 992 363 A1 known without there a sensitizer according to the formula (2) is disclosed.
  • Lt According to the known proposal, by ensuring a concentration gradient for UV-absorbing agents in a plurality of coatings applied to a substrate, the problem of photostability of formed thermal printing images is alleviated.
  • Possible color acceptors are known and proven components which are known from the prior art and which are also used in part for the present invention as a combination partner for the color acceptor N- (p-toluenesulphonyl) -N'-3- (p-toluenesulphonyl-oxy-phenyl) essential to the invention.
  • N- (p-toluenesulphonyl) -N'-3- (p-toluenesulphonyl-oxy-phenyl) urea is not found in the known document on the other hand. Consequently, this document is also no reference to the inventive combination of N- (p-toluenesulphonyn-N'-3- (p-toluenesulphonyl-oxy-phenyl) -urea according to formula (1) with 2- (2H-benzotriazole-2 yl) -p-cresol according to formula (2) It of the present invention.
  • the color acceptor comprises N- (p-toluenesulphonyl) -N'-3- (p-toluenesulphonyl-oxyphenyl) -urea according to formula (1) in combination with other color acceptors, in particular selected from the list, comprising: 2,2 to (4 -hydroxyphenyl) propane, 4 - [(4- (1-methylethoxy) phenyl) sulfonyl] phenol, 4-hydroxy-4'-isopropoxydiphylsulfone, 4,4'-dihydroxy-diphenylsulfone, 2,4'-dihydroxy-diphenylsulfone and N- (2-hydroxyphenyl) -2 - [(4-hydroxyphenyl) thio] acetamide embedded image in the heat-sensitive recording layer, it represents a particularly suitable embodiment when the ratio by weight of (%) of the other color acceptors to N- (p-toluenesulphonyl) -N'-3- (
  • ratio of the sensitizer according to formula (2) to the color acceptor according to formula (1) a range from 5:10 to 9:10 is particularly preferred, this ratio being independent of whether the color acceptor of formula (1) is alone or in Combination is set to adjust.
  • 3-dibutylamino-6-methyl-7-anilinofluoran is considered to be the most suitable dye precursor used singly or in combination with other dye precursors, preferably selected from the above dye precursors.
  • Suitable binders for incorporation into the heat-sensitive recording layer are, for example, water-soluble binders such as starch, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, gelatin, casein, polyvinyl alcohols, modified polyvinyl alcohols, sodium polyacrylates, acrylamide-acrylate copolymers, acrylamide-acrylate-methacrylate terpolymers, alkali metal salts of styrene.
  • water-soluble binders such as starch, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, gelatin, casein, polyvinyl alcohols, modified polyvinyl alcohols, sodium polyacrylates, acrylamide-acrylate copolymers, acrylamide-acrylate-methacrylate terpolymers, alkali metal salts of styrene.
  • binders such as styrene-butadiene copolymers, acrylonitrile-butadiene copolymers and methyl acrylate-butadiene copolymers are also suitable as binders for incorporation into the heat-sensitive recording layer.
  • polyvinyl alcohol in combination with acrylate copolymer are considered to be particularly preferred binders, the combination of which as the sole binder is incorporated into the heat-sensitive recording layer in a proportion of 12 to 27.5% by weight, based on the total weight of the recording layer ,
  • the coating composition for forming the thermosensitive recording layer may further contain slip and release agents such as metal salts of higher fatty acids, for example, zinc stearate, calcium stearate and waxes such as paraffin, oxidized paraffin, Polyethylene, polyethylene oxide, stearamides and castor wax.
  • Further constituents of the recording layer are, for example, pigments, preferably inorganic pigments such as, for example, aluminum (hydr) oxide, silica and calcium carbonate, in which case in particular calcium carbonate, preferably in an amount of from 10 to 18% by weight, based on the total weight of the recording layer the recording layer is to be included as being preferred.
  • a permanent color or typeface image can be formed in the recording layer under the action of heat.
  • the basis weight of the heat-sensitive recording layer is preferably between 2.5 and 12 g / m 2 and more preferably between 3 and 6.5 g / m 2 .
  • a brush for applying the heat-sensitive recording layer in particular, offer a doctor blade and (roll) doctor blade coater, curtain coater and air brush.
  • the coating color used to form the recording layer is aqueous.
  • the subsequent drying of the coating color can be done by means of microwave irradiation. Usually and proven it is just as much to supply heat, as happens by hot-air floatation dryer or contact dryer. Also conceivable is a combination of the listed dry processes.
  • a pigment-containing intermediate layer between the substrate layer and the recording layer.
  • pigments of the intermediate layer both organic void pigments and inorganic pigments have proven useful, the latter preferably selected from the group comprising natural and calcined kaolin, silica and in particular bentonite, calcium carbonate and aluminum hydroxide, in particular boehmite here.
  • such an intermediate layer can make a positive contribution to the leveling of the base layer surface, which reduces the amount of coating color necessarily required for the heat-sensitive recording layer. For this reason, offer to coat the intermediate layer leveling strokes, such as roller coater, doctor blade and (roll) doctor blade coating.
  • the pigments of this intermediate layer can absorb the heat-liquefied wax constituents of the thermosensitive recording layer in the typeface formation and thus promote a safe and rapid operation of the heat-induced recording.
  • the basis weight of the pigmented intermediate layer is preferably between 5 and 20 g / m 2 and more preferably between 7 and 11 g / m 2 .
  • the recording material according to the invention may have a protective layer which is applied to the heat-sensitive recording layer and completely or partially covers it.
  • the protective layer takes on a task, as it also partially fulfilled by a preferred provided backside coating namely, on the one hand the protection of the recording layer arranged under it against environmental influences such as oils, fats, water and plasticizers and on the other hand a further improvement in the printability, especially in offset and flexographic printing.
  • 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 second alternative embodiment which is possible as an alternative to the first embodiment described above, for a protective layer wholly or partially covering the heat-sensitive recording layer contains at least one polyvinyl alcohol and a crosslinking aid. It is preferred that the polyvinyl alcohol of the protective layer is modified with carboxyl or silanol groups.
  • a protective layer has a high affinity to the printing ink used in the offset printing process, preferably UV-crosslinking ink, which helps decisively to meet the requirement for improved printability within the offset printing. It is also conceivable to use mixtures of different carboxyl-group- or silanol-modified polyvinyl alcohols.
  • Suitable crosslinking aids in the protective layer according to the second embodiment are, in particular, those selected from the group comprising: boric acid, polyamine, epoxy resin, dialdehyde, formaldehyde oligomers, polyamine-epichlorohydrin resin, dimethylurea, melamine-formaldehyde. It is also possible to use mixtures of different crosslinking aids.
  • the ratio of the weight% of the modified polyvinyl alcohol to the crosslinking aid is in a range of 20: 1 to 5: 1, and more preferably in a range of 12: 1 to 7: 1 lies. It can be said that a ratio of the modified polyvinyl alcohol to the crosslinking aid of 100 parts by volume to 15 to 30 parts by volume has been proven.
  • the protective layer according to the second embodiment additionally contains an inorganic pigment.
  • the inorganic pigment is selected from the group comprising silica, aluminum hydroxide, calcium carbonate, kaolin or a mixture of said inorganic pigments.
  • the protective layer for economic reasons to be formed as single-layer as possible according to the second embodiment with a basis weight in a range of 1.5 g / m 2 to 6 g / m 2 and especially between 1.7 g / m 2 and 3 g / m 2 apply, without being limited to the Einschhold the protective layer. It has been found to be advantageous to have a smoothness of the protective layer in the range of 500 and preferably from 800 or better still 1,000 Bekk seconds (sec) to less than 3,000 Bekk-sec. In particular, values of 1,000 Bekk-sec to less than 2,500 Bekk-sec and most preferably from 1,200 Bekk-sec to 2,000 Bekk-sec are suitable.
  • the appearance of the protective layer is significantly determined by the type of smoothing and the friction in the calender and calender influencing roll surfaces and their materials.
  • a preferred range is between 30% and 50%, and most preferably between 40% and 48%, measured according to Tappi 450 or ISO 2813 at a reflection angle of 75 °.
  • Another preferred range is between 10% and 15%, determined according to the same rules and parameters.
  • a particularly good printability for the offset printing process is present when the protective layer of the new heat-sensitive recording material has the lowest possible polar fraction of the surface tension to be determined as the sum of disperse and polar fraction.
  • the determination of the surface tension takes place after Owens Wendt as in Journal of Applied Polymer Science, Vol. 13, 1969, pages 1741-1747 : Estimation of the Surface Free Energy of Polymers; DK Owens, RC Wendt stated.
  • a suitable range for the measurements of the polar component of the surface tension is above zero and below 15 mN / m (milli-Newton per meter).
  • a polar fraction of the surface tension is particularly preferably less than 10 mN / m.
  • the backcoat layer preferably comprises at least one polyurethane-based component acting as a crosslinker, preferably an anionic polyurethane in aqueous solution, for example Eka SP AP 29, Eka Chemicals AB, D-32301 Düren.
  • a polyurethane-based component acting as a crosslinker preferably an anionic polyurethane in aqueous solution, for example Eka SP AP 29, Eka Chemicals AB, D-32301 Düren.
  • the backcoat preferably comprises binders and in particular starch, styrene-butadiene latex and optionally carboxymethyl cellulose.
  • binders and in particular starch, styrene-butadiene latex and optionally carboxymethyl cellulose.
  • the mixture of different binders in sometimes highly divergent mixing ratios is possible and preferred.
  • Particularly positive results can be achieved with a coating weight for the back coating in a range of 2 to 15 g / m 2 .
  • a range for the coating weight of the back coating of 2.5 to 4.5 g / m 2
  • a range of 8.5 to 12 g / m 2 is very particularly preferred.
  • particularly suitable brushing particularly equalizing application devices such as doctor blade and (roll) doctor blade coater and Walzenstreichwerke into consideration, without being limited in any way.
  • both the back coat and the thermosensitive recording layer may be coated and dried in a single operation, for example, including the protective layer completely covering it.
  • such a coating machine (a) a rolling device, (b) a first coating, such as a curtain coater, an air brush or a roller blade coating applicator for applying the heat-sensitive recording layer, (c) a first non-contact Schwebetrocknerkanal, (d) a curtain coater or an airbrush for applying the protective layer, (e) optionally and depending on the type, a contactless web guiding system, (f) a film applicator for application of the backside coating, (g) a second non-contact floating dryer channel, (h) an after-dryer section with several drying cylinders, ( i) a remoistening system or a coating installation such as a film applicator for optimizing the flatness or for reducing the roll tendency, (j) an IR drying system, (k) one or more calendering units each having one or more press nips, in particular using zone-controllable and / or shoe press rolls or belt calenders and (I) an A Provide rolling device.
  • a further coating unit (b ') for example a doctor blade applicator with associated drying apparatus (b "), which can be a floating dryer channel and / or a drying cylinder, is provided is.
  • paper is the substrate that has prevailed on the market with regard to the good environmental compatibility because of good recyclability and is preferred in the context of the invention.
  • a paper web of bleached and ground deciduous and softwood pulps with a basis weight of 67 g / m 2 is prepared on a fourdrinier paper machine as the substrate layer with the addition of conventional additives in conventional amounts.
  • a mainly calcined kaolin pigment, Styrolbutadienlatex as a binder and starch as Cobinder having intermediate layer of 9 g / m 2 is applied online within the coating machine with a roller blade coating.
  • thermosensitive recording layer having a basis weight of 5.4 g / m 2 is applied to the intermediate layer in this order by means of a doctor blade coater, a protective layer of air brush 2.0 g / m 2 and applied by roller coater with downstream roller blade a backcoat of 3 g / m 2 .
  • Example 1 of the invention comprises Tinuvin ® P
  • Comparative Example 2 includes Tinuvin ® 144
  • Comparative Example 3 Tinuvin ® 234
  • Comparative example 4 containing Tinuvin ® 312
  • Comparative example 5 contains Tinuvin ® 477 DW
  • Comparative Example 6 contains GNI.
  • Table 1 the formulations of the final recording layer are reproduced, while Example 1 according to the invention and gray background for identification, Examples 2 to 6 are comparative examples.
  • This treatment in the case of percent resistance to ethanol, provides immersion of the Thermoprobertextes in a 25% ethanol solution (25 vol .-% solution, 23 ° C) over 20 minutes. The printout is then carefully blotted with blotting paper and allowed to rest for 24 hours at 23 ° and 50% humidity.
  • thermoprob expression is carried out until an energy of 64,800 kJ / m 2 has been reached. The print will then rest for 24 hours at 23 ° and 50% humidity.
  • the determination of the dynamic print density at three points of the black-colored areas is carried out again with the Gretag MacBeth TYPE D19C NB / U densitometer.
  • the respective mean values of the measurements before / after the bath in the ethanol solution and before / after the light irradiation are formed and the mean value after the bath (after the irradiation) as a percentage of the mean value before the bath (before the irradiation).
  • ODU Optical Density Units
  • ODU Optical Density Units
  • Atlantek 400 device from Viex (USA) using a thermal head with a resolution of 300 dpi and an energy per unit area of 11.7 mJ / mm 2 .
  • the print density even of the black-colored areas are measured with the densitometer Gretag MacBeth TYPE D19C NB / U (Gretag MacBeth, 8105 Regensdorf, Switzerland), where the dynamic printing densities are measured at three points for each measured value and the arithmetic mean is formed from the three individual values becomes.
  • Example 1 On the samples It. Example 1 and It of Comparative Examples 2 to 6, the resistances to ethanol as an example of the resistance to environmental influences, the resistance to light and the sensitivity to supplied heat in the form of a thermal print image were measured according to the above-described specifications. The measured values can be found in the last three columns of Table 1.
  • Example 1 fulfills the requirements of excellent resistance to environmental influences as well as excellent light resistance combined with sufficient sensitivity to supplied heat in the form of a thermal printing image. At the same time, a very good printability was observed on the samples of Example 1 according to the invention, and, in view of the offset printability, an outstanding pick resistance was also found.
  • Comparative Example 3 has higher resistance to ethanol than Example 1 of the present invention, the measured values of Comparative Example 3 are far too poor in light resistance and dynamic printing density:
  • the light resistance should preferably exceed 55%
  • the dynamic printing density should preferably exceed 1.0 ODU
  • the resistance to ethanol should preferably exceed 80% - particularly preferably at least 81 %, wherein the values mentioned apply with reference to the above definition for metrological detection of the corresponding measured variables.
  • Comparative Example 6 has higher dynamic printing density values than Inventive Example 1, Comparative Example 6's measured values are far too poor in light resistance and resistance to ethanol-even the worst in the case of resistance to ethanol test series.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
EP07017651A 2007-09-10 2007-09-10 Wärmeempfindliches Aufzeichnungsmaterial Active EP2033801B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE502007002945T DE502007002945D1 (de) 2007-09-10 2007-09-10 Wärmeempfindliches Aufzeichnungsmaterial
ES07017651T ES2339167T3 (es) 2007-09-10 2007-09-10 Material de registro sensible al calor.
EP07017651A EP2033801B1 (de) 2007-09-10 2007-09-10 Wärmeempfindliches Aufzeichnungsmaterial
AT07017651T ATE458621T1 (de) 2007-09-10 2007-09-10 Wärmeempfindliches aufzeichnungsmaterial
PCT/EP2008/007150 WO2009033589A1 (de) 2007-09-10 2008-09-02 Wärmeempfindliches aufzeichnungsmaterial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07017651A EP2033801B1 (de) 2007-09-10 2007-09-10 Wärmeempfindliches Aufzeichnungsmaterial

Publications (2)

Publication Number Publication Date
EP2033801A1 EP2033801A1 (de) 2009-03-11
EP2033801B1 true EP2033801B1 (de) 2010-02-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07017651A Active EP2033801B1 (de) 2007-09-10 2007-09-10 Wärmeempfindliches Aufzeichnungsmaterial

Country Status (5)

Country Link
EP (1) EP2033801B1 (es)
AT (1) ATE458621T1 (es)
DE (1) DE502007002945D1 (es)
ES (1) ES2339167T3 (es)
WO (1) WO2009033589A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2505374A1 (de) 2011-04-01 2012-10-03 Mitsubishi HiTec Paper Europe GmbH Wärmeempfindliches Aufzeichnungsmaterial, seine Verwendung und Verfahren zu seiner Herstellung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008057270A1 (de) * 2008-11-13 2010-05-20 Kanzan Spezialpapiere Gmbh Aufzeichnungsmaterial
DE102009016108A1 (de) * 2009-04-03 2010-10-07 Mitsubishi Hitec Paper Flensburg Gmbh Wärmeempfindliches Aufzeichnugnsmaterial
DE102011114129A1 (de) * 2011-09-23 2013-03-28 Mitsubishi Hitec Paper Europe Gmbh Aufzeichnungsmaterial zur Offset-Bedruckung
ES2509116T3 (es) * 2011-09-30 2014-10-17 Mitsubishi Hitec Paper Europe Gmbh Aceptor de color que reacciona formando color con un precursor de colorante, y material de registro termosensible con un aceptor de color de este tipo

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CA1236299A (en) * 1984-04-16 1988-05-10 Minnesota Mining And Manufacturing Company Prevention of spotting in thermal imaging compositions
FI110677B (fi) * 2001-10-12 2003-03-14 Jujo Thermal Oy Lämpöherkkä tallennusmateriaali
WO2005000597A1 (ja) * 2003-06-25 2005-01-06 Asahi Kasei Chemicals Corporation 記録材料用顕色剤
US20080194403A1 (en) * 2004-01-13 2008-08-14 Junpei Natsui Laser Recording Thermally Sensitive Recording Medium
WO2005102725A1 (ja) * 2004-04-22 2005-11-03 Oji Paper Co., Ltd. 感熱記録体
KR20070100255A (ko) * 2005-01-28 2007-10-10 오지 세이시 가부시키가이샤 감열 기록체
JP2006297840A (ja) * 2005-04-22 2006-11-02 Nippon Soda Co Ltd 記録材料及び記録シート

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2505374A1 (de) 2011-04-01 2012-10-03 Mitsubishi HiTec Paper Europe GmbH Wärmeempfindliches Aufzeichnungsmaterial, seine Verwendung und Verfahren zu seiner Herstellung

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Publication number Publication date
ATE458621T1 (de) 2010-03-15
WO2009033589A1 (de) 2009-03-19
EP2033801A1 (de) 2009-03-11
ES2339167T3 (es) 2010-05-17
DE502007002945D1 (de) 2010-04-08

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