EP0575234B1 - Elément récepteur d'image pour production d'image couleur de type diffusion-transfert thermique - Google Patents

Elément récepteur d'image pour production d'image couleur de type diffusion-transfert thermique Download PDF

Info

Publication number
EP0575234B1
EP0575234B1 EP19930401517 EP93401517A EP0575234B1 EP 0575234 B1 EP0575234 B1 EP 0575234B1 EP 19930401517 EP19930401517 EP 19930401517 EP 93401517 A EP93401517 A EP 93401517A EP 0575234 B1 EP0575234 B1 EP 0575234B1
Authority
EP
European Patent Office
Prior art keywords
image
dye
receiving element
receiving
film
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.)
Expired - Lifetime
Application number
EP19930401517
Other languages
German (de)
English (en)
Other versions
EP0575234A1 (fr
Inventor
Yoshikazu c/o Minnesota Mining and Mizobuchi
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0575234A1 publication Critical patent/EP0575234A1/fr
Application granted granted Critical
Publication of EP0575234B1 publication Critical patent/EP0575234B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • 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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
    • 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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5263—Macromolecular coatings characterised by the use of polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B41M5/5272—Polyesters; Polycarbonates

Definitions

  • This invention relates to an image-receiving element for the production of a dye diffusion type thermal transfer image.
  • the dye diffusion type thermal transfer technique is one of several techniques capable of producing a color hard copy closely approximating a color image of the silver salt type, and due to the compactness of the system, has recently attracted attention.
  • the system and the material pertaining to this technique apparently have reached a point at which the parties engaging in the use thereof are satisfied, but the desirability of a further technical innovation for decreasing the thermal energy required for printing and stabilizing the printed image has found growing recognition.
  • the role to be fulfilled by the image-receiving layer/image-receiving element is important.
  • This image-receiving layer has a dubious stability when resisting ultraviolet light because most of the thermally diffused dye gathers along the surface of the image-receiving layer during the formation of an image.
  • the image-receiving layer exposes the formed image to the possibility of losing stability, including the thermal stability.
  • the image-receiving layer When the image-receiving layer is incorporated therein, a reticulated texture by a cross-linking reaction as disclosed in Japanese Unexamined Patent Publications No. 212,994/1983 and No. 215,398/1983, for example, the incorporated reticular texture naturally induces the image-receiving layer itself to heighten its glass transition point (Tg) and the produced image-receiving layer suffers from the same drawback as the aforementioned homogeneous image-receiving layer notwithstanding the incorporated reticular texture precludes the sticking with the donor surface during the formation of an image.
  • Tg glass transition point
  • Japanese Unexamined Patent Publication No. 164,893/1986 discloses a method which comprises using a low boiling solvent for application to an image-receiving layer during the production of the image-receiving layer on a substrate and causing this image-receiving layer, during the step of drying of the applied layer of the solvent, to acquire a finely divided texture.
  • the image-receiving layer obtained by this method has the same effect as the aforementioned homogeneous image-receiving layer.
  • Japanese Unexamined Patent Publications No. 127,392/1986 and No. 264,896/1989 teach a method of causing an image-receiving layer to acquire a duplex structure consisting of a dye-absorbing layer and a stabilizing layer. This method complicates the structure of the image-receiving layer itself, and in respect of the stability of an image, necessitates a migration of dye from the dye-absorbing layer in the surface to the stabilizing layer by a process other than the printing, particularly by a thermal diffusion.
  • Japanese Unexamined Patent Publication No. 171,687/1984 discloses a method which comprises introducing metallic ions into an image-receiving layer thereby causing formation of a chelate with a dye, increasing the molecular weight of the dye in the layer, and enabling the dye to be stabilized to resist heat and ultraviolet light even within the high molecular weight image-receiving layer having a low glass transition point.
  • This method has the disadvantage that the chelate varies the tone of the dye and renders difficult an exact reproduction of color.
  • the performance described above cannot be realized by an ordinary combination of a dye with a metallic ion.
  • This invention provides an image-receiving element for the production of a dye diffusion type transfer image, which image-receiving element reduces the drawbacks suffered by the prior art as described above, allows the thermally transferred dye to be stably retained and prevented from lateral diffusion, and therefore, allows a production of a clear image which remains intact for a long time.
  • an image-receiving element comprising:
  • the image-receiving element of this invention has on a substrate an image-receiving layer formed of an olefin-based open cell type porous film exhibiting an extremely low affinity to a dye, such as, for example, polypropylene film or polyethylene film, containing a dye-receiving polymer material in the pores thereof.
  • a dye such as, for example, polypropylene film or polyethylene film
  • an olefin type material has been known as a material devoid of any active sites for attachment of a dye. This material, therefore, is extremely difficult to dye.
  • the image-receiving element of the prior art using as the dye-receiving element a polymer material of low Tg, the dye forming an image is easily diffused in the horizontal direction and the image is consequently devoid of thermal stability.
  • the image-receiving element of this invention produces an image of a dye which is thermally stable.
  • the image-receiving element of this invention enhances the fastness of the image of dye to resist ultraviolet light.
  • the image-receiving element enjoys an improved quality and retains high thermal stability. This is because the dye-receiving element possesses a low Tg, and therefore, the dye forming the image within the image-receiving layer does not remain in the surface region of the layer but reaches the depth thereof.
  • any conventional dye donor films can be employed.
  • the dye donor film does not characterize this invention.
  • a substrate forming an image-receiving element of the present invention can be selected from among any conventional products.
  • the materials which are usable advantageously for this film include, for example, polyethylene terephthalate, polycarbonate, nylon, and paper.
  • the thickness of the substrate is in the range of from 100 ⁇ m to 20 ⁇ m, preferably from 100 ⁇ m to 50 ⁇ m.
  • the material for the porous film of this invention is required to exhibit extremely low affinity to dye and desired to possess no active sites for deposition of the dye.
  • the materials known to satisfy this requirement are polyolefins such as, for example, polypropylene and polyethylene.
  • the film of these material is required to be an open cell type porous film for the purpose of accommodating in the pores a polymer having high affinity to the dye, which will be described more specifically herein below.
  • the Gurlex value of the porous film is in the range of from 100 to 5, preferably from 35 to 10.
  • the thickness of the porous film is in the range of from 30 ⁇ m to 10 ⁇ m, preferably from 25 ⁇ m to 15 ⁇ m.
  • the polymer which fills the pores of the porous film possesses affinity to the dye and has the ability to receive the dye.
  • the glass transition point (Tg) of the polymer is in the range of from -5°C to 40°C, preferably from 5°C to 20°C. If the glass transition point is unduly high, the image has an extremely low fastness to ultraviolet light. If the glass transition point is unduly low, the dye is thermally diffused even at room temperature within the image-receiving layer to degrade the quality of the image and disrupt the image.
  • the polymers which are effectively usable herein include polyvinyl chloride (PVC), copolymers of vinyl chloride with vinyl acetate, thermo-plastic saturated polyesters, and the like.
  • the dye-receiving polymer of the image-receiving element of the present invention may incorporate additionally therein a plasticizer such as, for example, di-n-butylphthalate or di-2-ethylhexyl phthalate in a proportion in the range of from 5 to 40% by weight, preferably from 15 to 35% by weight, based on the total weight of the dye-receiving element. If the proportion of the plasticizer is less than 5%, the added plasticizer cannot be expected to impart to the polymer desired fastness to resist the ultraviolet light. If this proportion exceeds 40%, the image has a poor thermal stability and is apt to be diffused. Commercial products of FC-430, FC-431, and FC-124, and the like, are available as a release agent.
  • a plasticizer such as, for example, di-n-butylphthalate or di-2-ethylhexyl phthalate in a proportion in the range of from 5 to 40% by weight, preferably from 15 to 35% by weight, based on the
  • the production of the image-receiving element of this invention is accomplished simply by first laminating the porous film on the substrate, then filling the pores in the porous film with a solution of the dye-receiving polymer, and drying the resultant composite.
  • the dye-receiving polymer plays an additional role as an adhesive agent for fixing the porous film on the substrate.
  • Lamination of the porous film on the substrate can be attained, as generally practiced, simply by superposing the porous film on the substrate and optionally heating the product of superposition to an extent enough to ensure a fast union but not enough to disfigure the pores, for example.
  • the dye-receiving polymer is first dissolved in a suitable solvent such as, for example, an ordinary organic solvent like tetrahydrofuran or methylethyl ketone in a suitable concentration in the range of from 1 to 30%, preferably from 5 to 10%, to prepare a solution. Then, the solution is applied to the porous film. The applied layer of the solution is dried by heating at a temperature in the range of from 40°C to 80°C, preferably from 50°C to 70°C, for a period in the range of from 5 to 60 minutes, preferably from 10 to 30 minutes. When a plasticiser is used, it may be dissolved simultaneously in the solution.
  • a suitable solvent such as, for example, an ordinary organic solvent like tetrahydrofuran or methylethyl ketone in a suitable concentration in the range of from 1 to 30%, preferably from 5 to 10%
  • a polymer solution was prepared by dissolving such a polymer in a concentration of 5% in tetrahydrofuran. Where a plasticizer was used, di-n-butyl phthalate as a plasticizer was dissolved in conjunction with the polymer in the solution. Where a release agent was used" FC-430 (produced by 3M Corp.) was dissolved in a concentration of 5% in THF.
  • an image-receiving element was effected by fixing a varying porous film indicated in Table 1 on a polyethylene terephthalate (PET) film 4 mil in thickness with an adhesive tape (produced by 3M Corp. and marketed under trademark designation of "Scotch Tape #811-1-18"), applying the polymer solution prepared as described above to the upper surface of the porous film by the use of a Mayer bar, and drying the applied layer of the solution at 65°C for 20 hours.
  • the image-receiving element thus obtained will be designated as "Type 1" hereinafter.
  • the image-receiving element produced as described above was heat-treated with a heat roller (produced by Gumma Ushio and marketed under product code of "190C") illustrated in Fig. 1 or a thermal printer (produced by 3M Corp. and marketed under the trademark of "Test Printer 7 Volts”).
  • the image-receiving element thus obtained will be designated as "Type 2" hereinafter.
  • a heat roller produced by Gumma Ushio and marketed under product code of "190C”
  • a thermal printer produced by 3M Corp. and marketed under the trademark of "Test Printer 7 Volts”
  • a polytetrafluoroethylene film (PTFE) 4 mil in thickness was superposed on the image-receiving layer side of the image-receiving element comprising the substrate and the image-receiving layer, and the resultant laminate was nipped between a PET film 2 mil in thickness and a PET film 4 mil in thickness and pressed with a heat roller.
  • a polyethylene terephthalate film (PET) 3.5 ⁇ m in thickness was superposed on the image-receiving layer side of the image-receiving element comprising the substrate and the image-receiving layer, and heating the produced laminate from the PET film side by the use of a thermal head.
  • an image-receiving element was obtained by applying the aforementioned polymer solution to a PET film (substrate) 4 mil in thickness by the use of a Mayer bar and then drying the applied layer of the solution at 65°C for 20 minutes.
  • This image-receiving element will be designated as "Type 3" hereinafter.
  • a donor film As a donor film, the product of Minnesota Mining and Manufacturing Company (3M) was used. This donor film was superposed on a given image-receiving element as illustrated in Fig. 3 and an image was formed by the use of a thermal printer (produced by Minnesota Mining and Manufacturing Company) provided with a thermal head rated for 100 dpi in a width of 3 cm, with a load of 1.9 kg applied to the head. The applied voltage was set at 7 volts and the burn time at 6.4 m.sec. The thermal energy consequently generated was 2.08 J/cm 2 .
  • 3M Minnesota Mining and Manufacturing Company
  • a sample print was left to age at 50°C for 65 hours.
  • the sample was examined with an optical microscope before and after the aging.
  • Delta E [L*t - L*o)2 + (a*t - a*o)2 + (b*t - b*o)211/2
  • Delta EMax [(L*o - L*B)2 + (a*o - a*B)2 + (b*o - b*B)2]1/2
  • Delta E/Delta Emax is such that the stability of a sample to resist a change of color increases in proportion as the magnitude of this expression approximates 0.
  • image-receiving film of Type 1 was produced by using Vylon 300 as an image-receiving element and applying a solution of Vylon 300 by the use of a Mayer bar #40 to the upper surface of a porous film, 770-28, fixed on a PET film 4 mil in thickness.
  • a printed image was produced with a magenta donor film and the image-receiving film by the method illustrated in Fig. 3 and tested for thermal stability by 65 hours' standing (aging) at 50°C. The results are shown in Fig. 4 (before aging) and Fig. 5 (after aging). The image showed no sign of distortion by heating despite such a low Tg as 7°C.
  • Vylon GK 570 was used as a dye-receiving element.
  • An image-receiving film of Type 1 was produced by the same method as used in Example 1.
  • a magenta printed image was produced and tested for thermal stability under the same conditions as used in Example 1. The results are shown in Fig. 8 (before aging) and Fig. 9 (after aging). The printed image was stable even though Vylon GK 570 had a lower Tg (5°C) than Vylon 300.
  • An image-receiving film of Type 3 was produced by following the procedure of Comparative Example 1, excepting Vylon GK 570 was used as a dye-receiving element.
  • a magenta printed image was formed on the film and tested for thermal stability under the same conditions 5 as described above. The results are shown in Fig. 10 (before aging) and Fig. 11 (after aging). Since the image-receiving layer was formed of a homogeneous phase of low Tg, the diffusion of dye by heating in the longitudinal direction could not be restrained. The printed image was consequently blurred. This indicates a lack of resolution.
  • An image-receiving film was produced by following the procedure of Example 1, except that Vylon GK 550 was used as a dye-receiving element. A magenta printed image was produced on the film and tested for thermal stability under the same conditions as described above. The results are shown in Fig. 12 (before aging) and Fig. 13 (after aging). Since Vylon GK 550 had such a low Tg as -9°C, the effect of the porous film was not manifested.
  • Tg 88°C
  • Zeon 400 X 150 J 75°C
  • Image-receiving films of Type 1 were produced from the porous film 770-28 and a Mayer bar #40 and image-receiving films of Type 3 were produced from the PFT film 4 mil in thickness and a Mayer bar #10.
  • Printed images were produced using magenta donor film by the method illustrated in Fig. 3. They were tested for lightresistance. The results are shown in Fig. 15. Since the Tg values were both as high as about 80°C, the image produced with the two types of image-receiving films showed virtually no difference in the results of the test for lightresistance.
  • Example 4 The same dye-receiving material as used in Example 4 was applied on a PET film 4 mil in thickness by the use of a Mayer bar #10. An image-receiving film of Type 3 was produced. A magenta printed image was produced by the same method as used in Example 4 and tested for lightresistance. The results are shown in Fig. 17. The addition of di-n-butyl phthalate brought about an effect opposite the intended effect. Thus, the combination of the porous film and the dye-receiving element possessing a low Tg was found to be closely related to not only thermal stability but also lightresistance.
  • a PVC film (produced by Mitsubishi Kasei Vinyl K.K.) as a dye-receiving element was dissolved in THF in a concentration of 5% by weight.
  • the resultant solution was applied by the use of three different Mayer bars to three pieces of porous film 770-28 fixed on a PET film 4 mil in thickness, and after drying, the image-receiving layers thereof was subjected to the heat treatments illustrated in Fig. 1 and Fig. 2 in the order mentioned, to produce image-receiving films of Type 2.
  • Printed images were produced by using these image-receiving films in conjunction with a magenta donor film by the method illustrated in Fig. 3 and then tested for lightresistance. The results are shown in Fig. 18. In the absence of the dye-receiving elements, the images of dye showed virtually no stability. In the presence of dye-receiving element, the stability varied with the thickness of coating applied. A substantially constant lightresistance was obtained by the Mayer bar #40.
  • a magenta printed image was produced by following the procedure of Example 5 using an image-receiving film of Type 3 produced by applying the same dye-receiving element as used in Example 5 to a PET film 4 in thickness with the aid of a Mayer bar #10, an image-receiving film of Type 3 (produced by 3M Corp. and marketed under product code of "GRL"), and a porous film 770-28.
  • This printed image was tested for lightresistance. The results are shown in Fig. 19. such lightresistance as observed in Example 5 was not found.
  • Example 5 on a PET film 4 mil in thickness, the same dye-receiving element as used in Example 5 was applied by the use of several different grades of Mayer bars, to produce image-receiving films of Type 3.
  • Magenta printed images were produced by the same method as used in Example 5 and tested for lightresistance. The results are shown in Fig. 20. The results indicate that the lightresistance of image increased in proportion as the thickness of dye-receiving layer increased. The images showed no thermal stability.
  • Image-receiving films of Type 1 were produced by applying the same dye-receiving element as used in Example 5 on several kinds of porous film.
  • Magenta printed images were produced by the method illustrated in Fig. 2. In only the three printed images illustrated in Fig. 11, no mass transfer of the dye and the binder from the donor layers was detected. From the data of the test for lightresistance shown in Fig. 21, the porous films 770-28 and 06101-5 showed satisfactory results.
  • Image-receiving films of type 1 were produced by applying the same dye-receiving element as used in Example 5 to a porous film 770-28 fixed on a PET film 4 mil in thickness by the use of several species of Mayer bars.
  • Printed images were produced from a yellow donor film on these image-receiving films by the method illustrated in Fig. 3 and then tested for light-resistance. The results are shown in Fig. 22.
  • the lightresistance of yellow printed image was observed to vary with the thickness of coating applied. The light-resistance increased in proportion as the thickness increased.
  • Cyan images were produced in the same manner as in Example 7 by using a cyan donor film and the same image-receiving films of Type I as produced in Example 7. These images were tested for lightresistance. The results are shown in Fig. 23. In these cyan images, the lightresistance was found to vary with the thickness of the dye-receiving element applied. Again, the lightresistance increased in proportion as the thickness increased.
  • Image-receiving films of Type 2 were produced in the same manner as in Example 5. From yellow, magenta, and cyan donor films, images were formed on the image-receiving layers by the method illustrated in Fig. 2. These images were tested for lightresistance. The results of the test for lightresistance in three independent colors are shown in Fig. 24 and the results in the mixture of the three colors shown in Fig. 25.
  • An image-receiving film of Type 1 was produced by applying the same dye-receiving element as used in Example 5 to a porous film 770-28 fixed on a PET film 4 mil in thickness by the use of Mayer bar #60.
  • Another image-receiving film was produced by repeating the procedure described above and additionally applying the same image-receiving element solution on the produced film by the use of a Mayer bar #10.
  • These two image-receiving films were subjected sequentially to the heat treatments illustrated in Fig. 1 and Fig. 2 in the order mentioned, to complete image-receiving films of Type 2. From a magenta donor film, images were formed on the image-receiving films by the method illustrated in Fig. 3. These images were tested for lightresistance.
  • Fig. 1 is a diagram illustrating a method of heat-treating an image-receiving element of this invention.
  • Fig. 2 is a diagram illustrating a method of heat-treating an image-receiving element of this invention.
  • Fig. 3 is a diagram illustrating a method of testing an image-receiving element of this invention as to formation of an image.
  • Fig. 4 is a photograph depicting on behalf of a diagram an image (before aging) formed of an image-receiving element prepared in Example 1.
  • Fig. 5 is a photograph depicting on behalf of a diagram an image (after aging) formed of an image-receiving element prepared in Example 1.
  • Fig. 6 is a photograph depicting on behalf of a diagram an image (before aging) formed of an image-receiving element prepared in Comparative Example 1.
  • Fig. 7 is a photograph depicting on behalf of a diagram an image (after aging) formed of an image-receiving element prepared in Comparative Example 1.
  • Fig. 8 is a photograph depicting on behalf of a diagram an image (before aging) formed of an image-receiving element prepared in Example 2.
  • Fig. 9 is a photograph depicting on behalf of a diagram an image (after aging) formed of an image-receiving element prepared in Example 2.
  • Fig. 10 is a photograph depicting on behalf of a diagram an image (before aging) formed of an image-receiving element prepared in Comparative Example 2.
  • Fig. 11 is a photograph depicting on behalf of a diagram an image (after aging) formed of an image-receiving element prepared in Comparative Example 2.
  • Fig. 12 is a photograph depicting on behalf of a diagram an image (before aging) formed of an image-receiving element prepared in Comparative Example 3.
  • Fig. 13 is a photograph depicting on behalf of a diagram an image (after aging) formed of an image-receiving element prepared in comparative Example 3.
  • Fig. 14 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Example 3.
  • Fig. 15 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Reference Example 4.
  • Fig. 16 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Example 4.
  • Fig. 17 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Example 5.
  • Fig. 18 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Reference Example 5.
  • Fig. 19 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Comparative Example 6.
  • Fig. 20 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Comparative Example 7.
  • Fig. 21 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Example 6.
  • Fig. 22 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Example 7.
  • Fig. 23 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Example 8.
  • Fig. 24 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Example 9.
  • Fig. 25 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Example 9.
  • Fig. 26 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Comparative Example 10.
  • Fig. 27 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Comparative Example 8.
  • Fig. 28 is a graph showing the results of a test for lightresistance performed on an image formed of an image-receiving element prepared in Comparative Example 9.

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)

Claims (7)

  1. Elément de réception d'image comprenant :
    (1) un substrat ;
    (2) un film poreux de type à alvéoles ouvertes stratifié sur la surface dudit substrat et formé d'un matériau présentant une très faible affinité pour colorants ; et
    (3) un polymère présentant une affinité élevée pour colorants, possédant un point de transition vitreuse (Tg) non inférieur à -5°C et n'excédant pas 40°C, et remplissant les pores dudit film poreux.
  2. Elément de réception d'image selon la revendication 1, dans lequel ledit polymère présentant une affinité élevée pour colorants est le chlorure de polyvinyle ayant une teneur en plastifiant non inférieure à 5% et n'excédant pas 40% (sur la base du poids total de l'élément recevant le colorant), et remplissant les pores dudit film poreux.
  3. Elément de réception d'image selon la revendication 1, dans lequel ledit matériau présentant une très faible affinité pour ledit colorant est une polyoléfine.
  4. Elément de réception d'image selon la revendication 1, dans lequel ledit polymère présentant une affinité élevée pour ledit colorant est le chlorure de polyvinyle, un copolymère de chlorure de vinyle avec de l'acétate de vinyle, ou un polyester.
  5. Elément de réception d'image selon la revendication 2, dans lequel ledit matériau présentant une très faible affinité pour ledit colorant est une polyoléfine.
  6. Elément de réception d'image selon la revendication 3, dans lequel ledit polymère présentant une affinité élevée pour ledit colorant est le chlorure de polyvinyle, un copolymère de chlorure de vinyle avec de l'acétate de vinyle, ou un polyester.
  7. Elément de réception d'image selon l'une quelconque des revendications 1 à 6, dans lequel la surface dudit élément porte une image transférée à chaud.
EP19930401517 1992-06-15 1993-06-14 Elément récepteur d'image pour production d'image couleur de type diffusion-transfert thermique Expired - Lifetime EP0575234B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP178844/92 1992-06-15
JP17884492A JPH0635152A (ja) 1992-06-15 1992-06-15 染料拡散型熱転写画像作製用受像体

Publications (2)

Publication Number Publication Date
EP0575234A1 EP0575234A1 (fr) 1993-12-22
EP0575234B1 true EP0575234B1 (fr) 1996-10-09

Family

ID=16055662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930401517 Expired - Lifetime EP0575234B1 (fr) 1992-06-15 1993-06-14 Elément récepteur d'image pour production d'image couleur de type diffusion-transfert thermique

Country Status (3)

Country Link
EP (1) EP0575234B1 (fr)
JP (1) JPH0635152A (fr)
DE (1) DE69305243T2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1811656A1 (de) * 1968-11-29 1970-06-18 Bayer Ag Heterogenes Polymergemisch
US5001106A (en) * 1988-03-16 1991-03-19 Dai Nippon Insatsu Kabushiki Kaisha Image-receiving sheet
JPH0383691A (ja) * 1989-08-29 1991-04-09 Dainippon Printing Co Ltd 受像紙
JP2970875B2 (ja) * 1990-01-25 1999-11-02 大日本印刷株式会社 感熱式記録媒体及び感熱式記録方法

Also Published As

Publication number Publication date
EP0575234A1 (fr) 1993-12-22
DE69305243D1 (de) 1996-11-14
DE69305243T2 (de) 1997-05-15
JPH0635152A (ja) 1994-02-10

Similar Documents

Publication Publication Date Title
EP0546436B1 (fr) Matériau en feuille pour l'impression par transfert thermique
CA2050789C (fr) Papier pour recepteur d'images a transfert thermique, procede de fabrication de celui-ci et papier d'impression par transfert thermique
EP0307713B1 (fr) Elément donneur de colorant bleu-vert utilisé pour le transfert par la chaleur
EP0318946B1 (fr) Procédé pour accroître la densité d'images obtenues par le transfert thermique
EP0228066B1 (fr) Mélange de polymères pour un élément récepteur de colorant utilisé pour le transfert de colorant par la chaleur
EP0332924A2 (fr) Elément donneur de colorant du type arylidène pyrazolone pour le transfert thermique de colorant
EP0849092B1 (fr) Feuille protectrice transparente pour impressions obtenues par transfert thermique
EP0312812B1 (fr) Elément donneur d'un stabilisant utilisé pour le transfert d'un colorant par la chaleur
EP0257579B1 (fr) Dérivés stabilisants alcoxylés pour un élément récepteur de colorant utilisé pour le transfert thermique
EP0348989B1 (fr) Esters phtaliques dans une couche réceptrice pour modifier la densité du transfert de colorant
EP0251170A2 (fr) Réchauffage non relatif aux images de colorants transférés dans des éléments de transfert thermique de colorants
EP0318945A2 (fr) Matériau pour l'amélioration de l'efficacité du transfert de colorant aux éléments donneurs de colorants utilisés pour le transfert thermique
EP0603569B1 (fr) Elément récepteur de colorant pour transfert thermique
EP0340722A2 (fr) Elément donneur de colorant jaune alkyl ou arylaminopyridyl ou pyrimidinylazo pour le transfert thermique de colorant
EP0575234B1 (fr) Elément récepteur d'image pour production d'image couleur de type diffusion-transfert thermique
US5411930A (en) Image-receiving element for production of dye diffusion type thermal transfer image
JPH0665508B2 (ja) 安定剤を含有する染料受容部材の再加熱法
EP0733488A2 (fr) Elément donneur de colorant pour transfert thermique de colorant contenant une couche protectrice transférable
JPH0319894A (ja) 熱転写印刷用染料担持シート
EP0658440B1 (fr) Elément donneur de colorant nitropyrazolylazoaniline pour transfert thermique de colorant
EP0374834A1 (fr) 2-Amino-thiazol-5-ylméthylène-2-pyrazoline-5-one, élément donneur de colorant utilisé pour le transfert par la chaleur
EP0885742A1 (fr) Assemblage pour le transfert thermique de colorants
EP0747234A1 (fr) Elément récepteur par transfert thermique de colorant contenant des perles élastomériques
JP2558992B2 (ja) 熱転写シート
EP0714788B1 (fr) Couche de couverture pour élément récepteur de colorant pour transfert thermique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19940509

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19960216

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 69305243

Country of ref document: DE

Date of ref document: 19961114

ITF It: translation for a ep patent filed
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980505

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980520

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990614

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990630

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990614

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000630

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050614