EP0319331A2 - Feuille pour l'impression thermique par transfert du colorant - Google Patents

Feuille pour l'impression thermique par transfert du colorant Download PDF

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Publication number
EP0319331A2
EP0319331A2 EP88311469A EP88311469A EP0319331A2 EP 0319331 A2 EP0319331 A2 EP 0319331A2 EP 88311469 A EP88311469 A EP 88311469A EP 88311469 A EP88311469 A EP 88311469A EP 0319331 A2 EP0319331 A2 EP 0319331A2
Authority
EP
European Patent Office
Prior art keywords
dye
colored layer
transfer
printing sheet
type thermal
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
EP88311469A
Other languages
German (de)
English (en)
Other versions
EP0319331B1 (fr
EP0319331A3 (en
Inventor
Tetsuji Kawakami
Hiromu Matsuda
Keiichi Yubakami
Akihiro Imai
Nobuyoshi Taguchi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Priority claimed from JP62304803A external-priority patent/JPH01146792A/ja
Priority claimed from JP62304808A external-priority patent/JP2829956B2/ja
Priority claimed from JP63133270A external-priority patent/JPH01301372A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0319331A2 publication Critical patent/EP0319331A2/fr
Publication of EP0319331A3 publication Critical patent/EP0319331A3/en
Application granted granted Critical
Publication of EP0319331B1 publication Critical patent/EP0319331B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/392—Additives, other than colour forming substances, dyes or pigments, e.g. sensitisers, transfer promoting agents

Definitions

  • This invention relates to a dye-transfer-type thermal printing sheet that is used for recording by means of thermal transfer. More particularly, it relates to a transfer-type thermal printing sheet that is effective when the dye used is likely to sublimate.
  • This printing sheet can be used for high-speed printing by electronic devices with heads through which current flows, laser elements, or the like.
  • Dye-transfer-type printing sheets comprise a substrate and a colored layer.
  • some of the sublimated dye that is contained in the colored layer is transferred to an image-receiving sheet such as a recording paper, resulting in an image on the image-receiving sheet.
  • the colored layer is usually composed of a dye that is likely to sublimate and a bonding material that binds this colored layer on the top of the substrate.
  • the dye-transfer-type printing sheet composed of a substrate and a colored layer contains non-­volatile granules, surfactants with aliphatic groups, silicones, or fluorides so as to prevent the sticking together of the colored layer and the image-receiving sheet and also the transfer by pressure of the dye from the colored layer to the image-receiving sheet, both of which phenomena are causes of deterioration of the image quality.
  • This kind of transfer printing sheet has the following problems:
  • the dye-transfer-type thermal printing sheet of this invention which overcomes the above-discussed and numerous other disadvantages and deficiencies of the prior art, comprises a substrate and a colored layer disposed on said substrate, said colored layer containing wax and fatty acid amides.
  • the fatty acid amides are at least one selected from the group consisting of oleamide, stearamide, erucamide, lauramide, oxystearamide, and n-oleylpalmitamide.
  • the wax is at least one selected from the group consisting of paraffin wax, microcrystalline wax, and oxidized wax.
  • the wax and the fatty acid amides, respectively, are contained in said colored layer in the proportion of 1 to 10% by weight.
  • the heat deforma­tion temperature of said entire colored layer is in the range of 60 to 120°C.
  • the colored layer contains a resin with a glass transition temperature of 65°C or more as a binding material.
  • the binding material that constitutes said colored layer is a reactant derived from the reaction of cross-linking agents with resins with a glass transition temperature of 65°C or more.
  • an adhesive layer is disposed between said substrate and said colored layer, said adhesive layer containing an adhesive resin and dye.
  • the dye that is contained in said adhesive layer includes dye that constitutes the portion of said colored layer corresponding to at least the upper portion of said adhesive layer. Percentages of the dye that is contained in said adhesive layer are one half or more those of the dye of said colored layer that corresponds to the upper portion of said adhesive layer.
  • An adhesive resin that constitutes said adhesive layer is at least one selected from the group consisting of saturated polyester resin, polyurethane resin, and acrylic resin.
  • the invention described herein makes possible the objectives of (1) providing a dye-­ transfer-type thermal printing sheet with high recording density at the time of the recording of an image on an image-receiving sheet; (2) providing a dye-­transfer-type thermal printing sheet, the properties of which will deteriorate only slightly in conveyance and storage; and (3) providing a dye-transfer-type thermal printing sheet that can be peeled off readily from the image-receiving sheet once recording has been accomplished.
  • Figure 1 shows a dye-transfer-type thermal printing sheet 11 of this invention, which comprises a substrate 1 and a colored layer 2.
  • the substrate 1 there are no particular restrictions concerning the substrate 1, provided that it supports the colored layer 2 that contains the dye to be transferred from the colored layer 2 to an image-receiving sheet (not shown).
  • a film made of PET, cellophane, polyamide, polyarylate, or the like can be used as the substrate 1. Heat-resistance and/or smoothness can be added to these materials. Materials that have conduct­ivity can be also used as the substrate 1 so as to perform current-heating recording and induction heating recording.
  • the colored layer 2 is composed of, at least, dye, a binding material, fatty acid amides, and wax.
  • the image quality becomes rough and/or the recording sensitivity is lowered if the dye has condensed, has crystallized, or the like, so the dye must be soluble in the binding material.
  • the dye should be a dye that confers color and/or a color former.
  • the colored layer is readily deformed or melted with the application of heat, it can readily adhere to the image-receiving sheet.
  • surfactants and separating agents that have aliphatic groups or silicones are added to the colored layer. These surfactants and separating agents have a low molecular weight, so they move to the surface of the colored layer with the passage of time to thereby prevent adhesion by the incompatibility or non-adhesion of the long-chain aliphatic segment or the dimethylsiloxane segment.
  • the properties of the printing sheet can change during commercial use such as transport and storage; the dye may spread from the front surface of the printing sheet to the back surface thereof when the printing sheet is wrapped; or pressure transfer may occur.
  • polymers that contain fluorine are present in the surface area of the colored layer, the above problems do not arise, because the fluoroalkyl group of the polymers that contain fluorine does not dissolve the dye.
  • the intermolecular energy of the fluoroalkyl group is small, which makes the surface energy small, there is incompatibility and non-adhesion between the fluoroalkyl group and the resin that forms the image-­receiving sheet, so that the removability of the image-­receiving sheet from the printing sheet after recording is finished is improved.
  • the removability of an image-receiving sheet with good durability of the recorded image from the printing sheet is still inferior; the reason is that an image-receiving sheet with good durability has a coloration layer that does not contain substances that have parting properties such as those of silicone oil or silicone surfactants.
  • the colored layer of the dye-­transfer-type thermal printing sheet of this invention contains, in addition to a dye and a binding material, wax and fatty acid amides that make the wax compatible with thermoplastic resins.
  • a dye and a binding material wax and fatty acid amides that make the wax compatible with thermoplastic resins.
  • wax and fatty acid amides that make the wax compatible with thermoplastic resins.
  • the wax incorporated into the colored layer 2 is not limited to any particular wax, but can be paraffin wax, microcrystalline wax, oxidized wax, poly­ethylene wax, polypropylene wax, polystyrene wax, and other kinds of vinyl compounds with a low degree of polymerization. From the point of view of remov­ability, paraffin wax, microcrystalline wax, and oxidized wax are preferable. If the proportion of wax to the entire colored layer is very large, the compatibility of the wax with the binding resin is lowered, and so the amount of wax that should be incorporated into the colored layer is from 1 to 10% by weight.
  • fatty acid amides monoamides such as stearamide, oleamide, cis -13-docosenoamide, lauramide, palmitamide, behenamide, ricinolamide, oxystearamide, methylolstearamide, methylolbehenamide and/or visamides such as methylenebisstearamide, ethylenebisstearamide, ethylenebisoleamide, and ethylenebislauramide can be used.
  • the solubility of the ink in solvents is con­sidered when the ink is being prepared for use in the colored layer, oleamide, stearamide, cis -13-­docosenoamide, lauramide, oxystearamide, and n-oleyl­palmitamide are preferable.
  • the amount of fatty acid amide in the entire colored layer is very large, the stability during storage of the printing sheet is lowered. From the point of view of the compatible effect of the wax and the binding-resin material, the amount of fatty acid amide should be about one-half to two times that of wax, and it is preferable that the amount of fatty acid amide in the colored layer be 1-­10% by weight.
  • the heat deformation of the entire colored layer should be 60-120°C.
  • the heat deformation temperature of the entire colored layer changes with changes in the amount of dye in the colored layer as shown in Figure 2.
  • the heat deformation temperature of the entire colored layer changes depending on the heat deformation temperature or on the glass transition temperature of the resin that is used as the binding material as shown in Figure 3. Even when wax and fatty acid amide are present, the heat deformation temperature of the entire colored layer decreases if the proportion in the colored layer are large.
  • the relationship between the heat deformation temperature of the entire colored layer and the recording density have the relationship shown in Figure 4. If the heat deformation temperature of the entire colored layer is 120°C or less, the heat at the time of recording readily softens the entire colored layer, and the movement of the dye to the front surface of the colored layer is thereby facilitated, so that the dye is more readily transferred from the colored layer to the image-receiving sheet by sublimation, heat diffusion, and/or the like.
  • the heat deformation temperature of the entire colored layer is 60°C or higher, migration of dye that causes transfer to the image-receiving sheet surface or condensation of dye such as was mentioned above does not occur, because the ambient temperature during transport and storage in industrial and other uses is generally les than 60°C.
  • the following method can be used to keep the heat deformation temperature of the entire colored layer at 60°C or more.
  • Resins with a glass transition temperature (ASTM D1043) of 65°C or more can be used as the binding material.
  • ASTM D1043 glass transition temperature
  • the heat deformation temperature of the entire colored layer will be lower, so that the above-mentioned use of such a resin will not meet the requirement of the heat deformation temperature of the entire colored layer being 60°C or more.
  • resins with a glass transition temperature of 65°C or more there are, for example, polystyrene, acrylonitrile-styrene copolymer (AS resin), ABS resin, methacrylic resin, butyral resin, polycarbonate resin, polyester resin, polyurethane resin, chlorinated polyethylene, chlorinated poly­propylene, and polysulfone.
  • AS resin acrylonitrile-styrene copolymer
  • ABS resin methacrylic resin
  • butyral resin polycarbonate resin
  • polyester resin polyurethane resin
  • chlorinated polyethylene chlorinated poly­propylene
  • polysulfone polysulfone
  • a cross-linking agent that will react with the resin to be used as the binding material is used as a component of the binding material so as to cross-link to the said resin:
  • cross-linking agent to be used substances with carbon-carbon double bonds and/or epoxy groups, alkyd resins, isocyanate, amines, and the like can be listed. With their use, it is possible to attain a heat deformation temperature of the entire colored layer of 60°C even if the glass transition temperature of the resin used to form the binding material is less than 65°C. Of course, it is possible to use a resin with a glass transition temperature of 65°C or more.
  • the following method can be used to make the heat deformation temperature of the entire colored layer 120°C or less.
  • additives with relatively small molecular weight including fatty acid amide and wax to the colored layer and/or of polymers with a relatively low glass transition temperature to the colored layer:
  • additives and polymers there are dispersants and plasticizers; lubricants to lend surface lubrication; preventers that prevent the colored layer from being charged with static elect­ricity; fatty acid amides, wax, and surfactants for improving the separation of the image-receiving sheet from the colored layer after recording; polymers with excellent adhesion to the substrate; and the like.
  • the heat deformation temperature of the entire colored layer is measured with a steady rate of temperature increase in a tensile test under a constant load or a penetration test under a constant load by the use of a thermo-mechanical tester, and defined as follows:
  • the relationship between the stretching of the sample sheet and the passage of time (or the temperature) is as shown in Figure 5.
  • the heat deformation temperature is the temperature at the intersection of the extended line (line A) in the relatively low temperature region in which the thermal expansion coefficient is constant and the extended line (line B) in the region in which the stretching of the sample is abruptly increased.
  • the measurement conditions are as follows:
  • Sample sheet A coating used to form the colored layer is coated onto glass or the like and dried, resulting in a sample film.
  • the length of the sample film in the direction of tension is 30 ⁇ 5 mm, the width thereof is 5 ⁇ 0.5 mm, and the thickness thereof is 1.5 ⁇ 0.5 ⁇ m.
  • the load for tension is 10 g.
  • the rate of temperature increase is 5°C/minute, starting at room temperature.
  • the relationship between the extent to which a needle entered the sample sheet and the passage of time (or the temperature) is as shown in Figure 6.
  • the heat deformation temperature is the temperature at the intersection of the extended line (line A) in the relatively low temperature region in which the thermal expansion coefficient is constant and the extended line (line B) in the region in which the extent to which the needle entered the sample is abruptly increased.
  • the measurement conditions are as follows:
  • Sample sheet A coating used to form the colored layer is coated onto glass or the like and dried, giving a sample film.
  • the length of the sample film is 5 mm or more; the width thereof is 5 mm or more; and the thickness thereof in the direction of compression is 0.5 mm or more.
  • the weight of compression is 10 g.
  • the cross-sectional diameter of the tip of the needle used in this test is 0.5 mm.
  • the rate of temperature increase is 5°C/minute, starting at room temperature.
  • the adhesion of the substrate to the colored layer of the printing sheet is not sufficient, as shown in Figure 7, it is possible to form an adhesive layer 3 between the substrate 1 and the colored layer 2.
  • an adhesive layer there is some dispersion of the dye from the colored layer to the adhesive layer, so the recording sensitivity declines.
  • the percentage of dye to be contained in the adhesive layer be 30% or more of the percentage of dye to be contained in the colored layer, and more preferably 50% or more.
  • the resin that is used as the adhesion layer there are no particular limitations, provided that the substance confers adhesion between the substrate and the colored layer.
  • an oil-soluble resin that is used as the adhesion layer when the substrate is made of PET there are saturated polyester resin, polyurethane resin, modified acrylic resin, and the like.
  • a water-soluble resin that is used as the adhesion layer there are ionomer resin, acrylate resin, and the like. These resins can be further hardened by cross-linking agents.
  • Figure 8 shows an image-receiving sheet 12 of this invention, which is composed of a substrate 4 and a coloration layer 5 disposed on the said substrate 4.
  • the substrate 4 it is possible to use ordinary paper, coated paper, art paper, synthetic paper, PET film, and so on.
  • the coloration layer 5, resin, etc., that can be colored well by the dye can be used.
  • a heat-resistant and lubricating layer was disposed on the back surface of PET film with a thickness of 4 ⁇ m, resulting in a substrate.
  • On the front surface of the PET film of the substrate there was painted with a wire bar an ink obtained by dissolving, in a mixture of 42 g of toluene and 18 g of MEK as the solvents, 2 g of Dye A of the structural formula described below, 4 g of polyvinylbutylal (S-LEC BX-1; Sekisui Kagaku) as a binding material with a glass transition temperature of 86°C, 0.2 g of paraffin wax with a melting point of 50°C, and 0.2 g of oleamide. This was dried in a warm draft, resulting in a dye-transfer-type thermal printing sheet.
  • Dye A 2.5 g of Dye A, 4 g of AS resin (Denki Kagaku Kogyo Co.; Denka Styrol AS-SU) as a binding material, 0,4 g of microcrystalline wax (Nihon Seiro Co.; Hi-Mic-2045), and 0.4 g of cis -13-docosenoamide were dissolved in 60 g of monochlorobenzene to make ink, which was then painted with a wire bar on the same substrate as was used in Example 1 and dried, resulting in a dye-transfer-type printing sheet.
  • AS resin Denka Styrol AS-SU
  • microcrystalline wax Nihon Seiro Co.
  • Hi-Mic-2045 0.4 g of cis -13-docosenoamide
  • Dye A 3.0 g of Dye A, 4.0 g of polycarbonate resin (Teijin Kasei Co.; Panlite L-1225) as a binding material, 0.2 g of paraffin wax, and 0.2 g of oleamide were dissolved in 60 g of dichloromethane to make ink, which was then painted with a wire bar on the same substrate as was used in Example 1 and dried in a warm draft, resulting in a dye-transfer-type printing sheet.
  • polycarbonate resin Teijin Kasei Co.; Panlite L-1225
  • Dye A 3.2 g of acrylonitrile­styrene copolymer (Denki Kagaku Kogyo Co., Denka AS S-­312) as a binding material
  • 0.3 g of paraffin wax with a melting point of about 70°C 0.5 g of lauramide
  • a mixture of 30 g of toluene and 30 g of MEK to make ink, which was then painted with a wire bar on the same substrate as was used in Example 1 and dried in a warm draft, resulting in a dye-transfer-type thermal printing sheet.
  • Dye A 4 g of a saturated poly­ester resin (Nihon Gosei Kagaku Kogyo Co.; polyester TP-236) with a glass transition temperature of 60°C, 0.4 g of isocyanate (Nihon Polyurethane Co.; Coronate L), 0.2 g of paraffin wax with a melting point of 70°C, and 0.2 g of oleamide were dissolved in 60 g of dichloromethane to make ink, which was then painted with a wire bar on the same substrate as was used in Example 1 and dried, after which it was left in a drier at a fixed temperature of 50°C for 4 hours, which hardened the colored layer, resulting in a dye-­transfer-type thermal printing sheet.
  • Dye A 1 g of Dye A, 4 g of a saturated polyester resin (Toyo Boseki Co.; Vylon 200), and 0.3 g of isocyanate (Nihon Polyurethane Co.; Coronate L) were dissolved in 60 g of dichloromethane to form a coating, which was then painted with a wire bar on the top surface of the same substrate as was used in Example 1 and dried, giving an adhesive layer with a thickness of about 0.2 ⁇ m. On the top surface of this layer, the same ink as was used in Example 3 was painted with use of a wire bar and dried, resulting in a dye-transfer-­ type thermal printing sheet.
  • a saturated polyester resin Toyo Boseki Co.; Vylon 200
  • isocyanate Nihon Polyurethane Co.; Coronate L
  • Example 2 On the same substrate as was used in Example 1, an ink that was obtained by dissolving, into a mixture of 42 g of toluene and 18 g of MEK, 2 g of Dye A, and 4 g of polyvinylbutylal (Denki Kagaku Kogyo Co.; Denkabutyral #6000-C) with a glass transition temperature of 90°C as a binding material was applied with a wire bar and dried, giving a dye-transfer-type thermal printing sheet.
  • polyvinylbutylal Denkabutyral #6000-C
  • Example 2 On the same substrate as was used in Example 1, an ink that was obtained by dissolving 2 g of Dye A, 4 g of polyvinylbutylal (same as above) as a binding material, and 0.2 g of paraffin wax with a melting point of 50°C into 60 g of the same solvent as was used in Control 1 was applied with a wire bar and dried with a warm draft, giving a dye-transfer-type thermal printing sheet.
  • Example 2 On the same substrate as was used in Example 1, an ink that was obtained by dissolving 2 g od Dye A and 4 g of polysulphone (Nissan Kagaku Kogyo Co.; P-1700) into 60 g of chlorobenzene was applied with a wire bar and dried with a warm draft, giving a dye-transfer-type thermal printing sheet.
  • polysulphone Nisan Kagaku Kogyo Co.; P-1700
  • Example 2 On the same substrate as was used in Example 1, an ink that was obtained by dissolving 5 g of Dye A dna 4 g of polysulphone (Nissan Kagaku Kogyo Co.; P-1700) into 60 g of chlorobenzene was applied with a wire bar and dried with a warm draft, giving a dye-transfer-type thermal printing sheet.
  • Example 2 On the same base as was used in Example 1, a coating that was obtained by dissolving 4 g of saturated polyester resin (Toyo Boseki Co.; Vylon 200) and 0.3 g of isocyanate (Nihon Polyurethane Co.; Coronate L) into 60 g of dichloromethane was applied with a wire bar and dried, resulting in an adhesive layer with a thickness of about 0.2 ⁇ m. On the top surface of this layer, the same ink that was used in Example 3 was applied, giving a dye-transfer-type thermal printing sheet.
  • saturated polyester resin Toyo Boseki Co.; Vylon 200
  • isocyanate Nihon Polyurethane Co.; Coronate L
  • the following items were measured under the below-mentioned recording conditions for thermal heads by the use of the dye-transfer-type thermal printing sheets and the image-receiving sheets obtained above: the recording density; the force needed to remove the image-receiving sheet from the printing sheet per recording width after recording; the presence or absence of transfer of dye from the front surface of the printing sheet to the back surface of the printing sheet after storage for 200 hours at 60°C at 60% relative humidity with the printing sheets in a rolled condition; and the heat deformation temperature of the entire colored layer.
  • Table 1 The results of measurements of the above-mentioned items are shown in Table 1.
  • the units used to express the removal of the image-receiving sheet from the printing sheet were g/cm.
  • the measurements of the transfer of dye from the front surface of the printing sheet to the back surface thereof were made after storage for 200 hours at 60°C at 60% relative humidity.
  • TH is the value found for the heat deformation temperature of the entire colored layer.
  • the dye-transfer-type thermal printing sheet of the invention that contains wax and fatty acid amides in its colored layer results in a high recording density and satisfactory properties for storage and removability of image-receiving sheets therefrom.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
EP88311469A 1987-12-02 1988-12-02 Feuille pour l'impression thermique par transfert du colorant Expired - Lifetime EP0319331B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP304803/87 1987-12-02
JP62304803A JPH01146792A (ja) 1987-12-02 1987-12-02 感熱記録用転写体
JP304808/87 1987-12-02
JP62304808A JP2829956B2 (ja) 1987-12-02 1987-12-02 感熱記録用転写体
JP63133270A JPH01301372A (ja) 1988-05-31 1988-05-31 染料転写体
JP133270/88 1988-05-31

Publications (3)

Publication Number Publication Date
EP0319331A2 true EP0319331A2 (fr) 1989-06-07
EP0319331A3 EP0319331A3 (en) 1990-08-16
EP0319331B1 EP0319331B1 (fr) 1994-05-11

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EP88311469A Expired - Lifetime EP0319331B1 (fr) 1987-12-02 1988-12-02 Feuille pour l'impression thermique par transfert du colorant

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EP (1) EP0319331B1 (fr)
DE (1) DE3889527T2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696518A1 (fr) * 1994-08-11 1996-02-14 Fuji Photo Film Co., Ltd. Feuille d'encre thermosensible et méthode pour former des images
EP0799713A1 (fr) * 1996-04-03 1997-10-08 Minnesota Mining And Manufacturing Company Elément donneur pour transfert thermique contenant un composé sublimable incolore et procédé pour former des images

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183196A (ja) * 1984-02-29 1985-09-18 Fujitsu Ltd 熱転写記録用インクシ−ト
WO1986005197A1 (fr) * 1985-03-07 1986-09-12 Ncr Corporation Formule d'encre a transfert thermique, son support et procede de production
US4617224A (en) * 1983-10-17 1986-10-14 Konishiroku Photo Industry Co., Ltd. Thermal transfer recording medium
WO1986007311A1 (fr) * 1985-06-07 1986-12-18 Pelikan Akteingesellschaft Procede de fabrication de rubans encreurs thermiques pour impression a transfert thermique et ruban encreur thermique ainsi obtenu
JPS61295089A (ja) * 1985-06-25 1986-12-25 Canon Inc 感熱転写材
EP0227092A2 (fr) * 1985-12-24 1987-07-01 EASTMAN KODAK COMPANY (a New Jersey corporation) Agent de libération pour le transfert de colorant par la chaleur
EP0260347A2 (fr) * 1985-12-18 1988-03-23 Fujitsu Limited Feuille encrée ré-utilisable pour l'impression par transfert thermique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4617224A (en) * 1983-10-17 1986-10-14 Konishiroku Photo Industry Co., Ltd. Thermal transfer recording medium
JPS60183196A (ja) * 1984-02-29 1985-09-18 Fujitsu Ltd 熱転写記録用インクシ−ト
WO1986005197A1 (fr) * 1985-03-07 1986-09-12 Ncr Corporation Formule d'encre a transfert thermique, son support et procede de production
WO1986007311A1 (fr) * 1985-06-07 1986-12-18 Pelikan Akteingesellschaft Procede de fabrication de rubans encreurs thermiques pour impression a transfert thermique et ruban encreur thermique ainsi obtenu
JPS61295089A (ja) * 1985-06-25 1986-12-25 Canon Inc 感熱転写材
EP0260347A2 (fr) * 1985-12-18 1988-03-23 Fujitsu Limited Feuille encrée ré-utilisable pour l'impression par transfert thermique
EP0227092A2 (fr) * 1985-12-24 1987-07-01 EASTMAN KODAK COMPANY (a New Jersey corporation) Agent de libération pour le transfert de colorant par la chaleur

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 25 (M-450)(2082) 31 January 1986, & JP-A-60 183196 (FUJITSU K.K.) 18 September 1985, *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 166 (M-593)(2613) 28 May 1987, & JP-A-61 295089 (CANON INC) 25 December 1986, *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696518A1 (fr) * 1994-08-11 1996-02-14 Fuji Photo Film Co., Ltd. Feuille d'encre thermosensible et méthode pour former des images
EP0799713A1 (fr) * 1996-04-03 1997-10-08 Minnesota Mining And Manufacturing Company Elément donneur pour transfert thermique contenant un composé sublimable incolore et procédé pour former des images
US5747217A (en) * 1996-04-03 1998-05-05 Minnesota Mining And Manufacturing Company Laser-induced mass transfer imaging materials and methods utilizing colorless sublimable compounds

Also Published As

Publication number Publication date
DE3889527D1 (de) 1994-06-16
DE3889527T2 (de) 1994-12-08
EP0319331B1 (fr) 1994-05-11
EP0319331A3 (en) 1990-08-16

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