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    • 专利摘要:
    Improvement in the temporary supports for transfer of electrographic images with the Thermoplastic Compound Transferring Electrographic Images and in the transfer methods. The invention presents improvements in the methods of image transfer based on the use of the Thermoplastic Compound Transferring Electrographic Images described in the patent ES2524490 B2 and in the temporary supports, both flexible and rigid, which are used in said improved method. The improved supports of the invention include materials incompatible with the Electrographic Transferring Thermoplastic Compound and additional hydrophilic materials. The improved method of the invention includes a hydration step of the support, which promotes the incompatibility of the supports with the Thermoplastic Compound Transferring Electrographic Images and, therefore, facilitates the detachment of the film containing the transferred image and its subsequent handling in processes of chromatic reintegration and in plastic arts. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2666702A1
    申请号:ES201600921
    申请日:2016-11-03
    公开日:2018-05-07
    发明作者:Alberto LÓPEZ DEL RÍO；Juan José GARCÍA GARRIDO
    申请人:Universidad Complutense de Madrid；
    IPC主号:
    专利说明:

     5 Improvement in the temporary supports for transfer of electrographic images with the Thermoplastic Compound Transfer of Electrographic Images and in the transfer methods. Technical sector The present invention falls within the field of Fine Arts and in restoration processes of pictorial work (chromatic reintegration of gaps or lacks) as well as in creative processes and restoration of three-dimensional work. More specifically, it falls within the sector of the transfer of electrographic images, created from electromechanical means, such as photocopiers, plotters, faxes, printers, etc. 15 State of the art The present invention is an improvement of the patent ES2524490 B2, of the same applicant and the same inventors, where a Thermoplastic Electromagnetic Image Transfer Compound, the method for its manufacture and three methods of using the compound for the transfer 20 of electrographic images created by analog, laser or Ink Jet means. In the field of Fine Arts, the term transfer refers to the transfer of an electrographic image made on a temporary support, by various means, to another final support. The temporary support used in transfers 25 can be ordinary paper of different weights, coated papers, acetate sheets, paraffin paper, transfer paper, etc. To carry out the transfer of images to different supports there are different compositions that may include mixtures of resins (acrylic, melanin, isocyanate and silane-based) in a solvent (KR20060004327 A); mixtures of rosin, wax, paraffin and turpentine (US1530926 A); lacquers (W09013063 A1). Also the methods used to make the transfers may vary; for example, in the case of KR20060004327 A, the final support is coated with the composition of the invention, the drawing to be transferred onto said coating and pressure is applied at a temperature between 150 and 180 ° C. 35 The transfer techniques commonly used present some problems such as: the risk of damaging the pictorial substrates when usingsolvents, the difficulty in eliminating temporary support or the high cost of some temporary supports. The Thermoplastic Electromagnetic Image Transfer Compound 5 protected by ES2524490 B2 comprises one or more resins, one or several waxes, a solvent, a natural plasticizing agent and an antioxidant with or without the addition of pigments. By applying this compound, the problems of transfer techniques are largely resolved, however, there is still room for improvement in the use of the Thermoplastic Electromagnetic Image Transfer Compound. Among the three transfer methods described in ES2524490 B2, with two of them films are obtained, with the image transferred, which are free of support and whose materiality and properties correspond to those of the Thermoplastic Electromagnetic Image Transfer Compound. Under certain conditions, these films with the transferred image may have some risk of breakage. Likewise, the operation of detachment of the films from the temporary support can be difficult, in addition to entailing the risk of breakage during the detachment process itself. DETAILED DESCRIPTION OF THE INVENTION The present invention is a refinement of the methods of using the Electromagnetic Image Transfer Thermoplastic Compound for the transfer of electrographic images described in patent ES2524490 B2 and of the temporary supports used in said methods. It is an improvement aimed at facilitating, in the first place, the detachment of the films treated with the Thermoplastic Electromagnetic Image Transfer Compound and, secondly, the handling of the films once they are free of support and with the transferred image . In this specification, when the Thermoplastic Electromagnetic Image Transfer Compound is cited, reference will be made to the Thermoplastic Electromagnetic Image Transfer Compound protected by patent ES2524490 B2.The improvement included in the present invention can be applied to two of the methods of using the Thermoplastic Electromagnetic Image Transfer Compound protected by ES2524490 B2. These two methods described in ES2524490 B2 were developed to obtain 5 support-free films: A) Method of carrying out the transfer of electrographic images created in analog or laser devices through the Thermoplastic Electromagnetic Image Transfer Compound, as described in ES2524490 10 B2, whereby a film is obtained, of the desired thickness and free of support, formed by the Thermoplastic Electromagnetic Image Transfer Compound solidified at room temperature and the toner particles transferred from the temporary support that make up the image. Said film may be subsequently attached to a definitive support. Method 15 includes: - placing the electrographic image, created on a temporary support, on a rigid support so that the pigment particles that form said image are on the side of the temporary support opposite to the rigid support; -Place a mold or frame on the perimeter of the image to be transferred; 20 -Add the Thermoplastic Compound Electromagnetic Image Transfer Hot, at a temperature between 90 and 150 ° C, inside the mold or frame and apply heat, between 50 and 150 ° C, to form a film between 0.1 and 20mm thick of thermoplastic transfer compound; -allow to cool to room temperature; 25 -remove the temporary support of the electrographic image as well as the mold or frame. B) Method of carrying out the transfer of electrographic images created in Ink Jet devices, according to ES2524490 B2, through Compound 30 Thermoplastic Electromagnetic Image Transfer which includes: -Place a protective polyester film, anchored and stretched, on a rigid pictorial support of dimensions greater than the image to be transferred by at least 1 cm on each side; -add the Hot Thermoplastic Compound of Imager 35 at a temperature between 90 and 150 ° C, and apply heat, between 50 and 150 ° C, to form a film between 0.1 and 20mm thick of thermoplastic compound transferor;5-allow to cool to room temperature; -printing the electrographic image on the transfer thermoplastic composite film by using a horizontal plotter; - Release the polyester film from the pictorial support. However, temporary supports that are used in both methods according to ES2524490 82, such as plain untreated copy paper or polyester film, may present difficulties when detaching the film with the transferred image if it is not They perform with great care, including the possibility of breakage of said film. These difficulties also refer to possible deficiencies in obtaining image transfers with a 100% report depending on the electrostatic technology used. The present invention includes flexible temporary supports perfected for transfer of electrographic images that allow to obtain support-free films, with the transferred image, arranged to be subsequently adhered to a definitive support. These flexible temporary supports comprise a paper base, treated in a stratified manner with: an aqueous solution of gum arabic, tragacanth gum, or xanthan gum; an aqueous-based solution of a cellulose adhesive, of acrylic or vinyl resins; or treated by applying a thin layer of silicone that can be applied by spraying, for example, by a spray or aerosol, or combinations thereof. Another aspect of the invention relates to rigid temporary supports for transfer of electrographic images that allow to obtain support-free films, with the transferred image, arranged to be subsequently adhered to a definitive support. These rigid temporary supports 30 comprise a rigid frame that can be metallic, wood or plastic and a sheet of a rigid material that gives two essential characteristics to the assembly such as: flatness and rigidity; said rigid material can be selected from metals (especially aluminum), glass, glass, plastic. On this rigid frame support a hydrophilic material is incorporated and on this hydrophilic material a treated paper base is adhered as described above for the flexible supports. Finally, this last layer is treated with the Thermoplastic Image Transfer CompoundElectromagnetic according to patent ES2524490 B2, which will receive the printing of the final image by Ink Jet technical means. Among the hydrophilic material that can be incorporated on the rigid support with frame can be cited, as examples: paper pulp, hydrophilic cotton or other vegetable fibers , cardboard 5 binder. These flexible and rigid temporary supports, treated for use by the application of Thermoplastic Electromagnetic Image Transfer Compound, are supports that adapt to electrostatic reproduction media 10 of small and large format, the first ones, and means of image reproduction Large format Ink Jet (mainly those that use UV inks), the latter. On the other hand, these supports allow to obtain support-free films with 15 electrostatic images or Ink Jet transferred with a 100% report AND without alteration of the graphic information regardless of the model or trademark of the reproduction machines, being therefore very versatile 20 These films, once released with the transferred image, assume the properties of the Thermoplastic Electromagnetic Image Transfer Compound and are capable of being subsequently attached to a definitive support. Particularly interesting are these films created with the transferred image to be used in artistic-creative processes or restoration of pictorial work in chromatic reintegrations of gaps or lacks. However, the versatility of the Thermoplastic Electromagnetic Image Transfer Compound does not prevent such processes from being used in creative processes or restoration of three-dimensional work. Another aspect of the present invention relates to an alternative method of transferring electrographic images by which films with the transferred image are obtained, free of support, the materiality of which corresponds to the Thermoplastic Electromagnetic Image Transfer Compound protected by the patent ES2524490 82 and for which it is necessary to use the temporary supports perfected and described in this report. To transfer electrographic images created by analog or laser means,The method includes the following steps according to two types of reproduction of the image to be transferred, either electrostatically or Ink Jet: For the first case there is an image printed on a base of 5 paper treated in a stratified form with: a solution water based gum arabic, tragacanth gum, or xanthan gum; an aqueous-based solution of a cellulose adhesive, of acrylic or vinyl resins; or treated by spray silicone application; or combinations thereof, and includes the following steps: 10 - delimiting the image to be transferred by means of a mold, a frame, a reservation; -Add the Thermoplastic Electromagnetic Image Transfer Compound of ES2524490 82 hot, at a temperature between 90 and 150 ° C, inside the mold or frame and apply heat, between 50 and 150 ° C, to form a film of between 0.1 and 20mm thickness of Thermoplastic Compound 15 Electron Image Transfer; 20-allow to cool to room temperature until the Thermoplastic Electromagnetic Image Transfer Compound solidifies; -hydrate the printed image on the flexible support by immersion in water at 18-35 ° C until the free support film is obtained. To transfer electrographic images created in Ink Jet devices, the method includes: -on a rigid pictorial support of dimensions greater than the image to be transferred in at least 1 cm on each side, place a sheet of a hydrophilic compound and, on it , adhere a treated paper base as described above for the improved flexible temporary supports; -add the Hot Thermoplastic Electromagnetic Image Transfer Compound, at a temperature between 90 and 150 ° C, and apply heat, between 50 and 150 ° C, to form a film between 0.1 and 20mm thick of thermoplastic compound 30 transferor; -allow to cool to room temperature; -printing the electrographic image on the film of Thermoplastic Compound Electromagnetic Image Transfer using a horizontal plotter;- immerse the reproduced image on the temporary rigid support in water at a temperature of 18-35 ° C until the free support film is obtained. By hydration, the supports are activated by dissolving or promoting the incompatibility of the treatment materials in contact with the Electromagnetic Image Transfer Thermoplastic Compound, applied in the form of a film, which allows it to detach. The time it will take to release the film with the characteristics of the Thermoplastic Electromagnetic Image Transfer Compound will depend on several factors, including, for example: the size and thickness of the film to be released from the support, or the type of hydrophilic material used and the thickness of this material. These new temporary supports, both flexible and rigid, have the particularity that they are treated with materials incompatible with the Thermoplastic Electromagnetic Image Transfer Compound and, in addition, additional hydrophilic materials are incorporated that facilitate the transfer process by promoting such incompatibility. At the same time, these materials do not present an obstacle with both electrostatic and Ink Jet reproduction machines to receive the image correctly. 20 These new flexible or rigid temporary supports facilitate the process of transfer and detachment of temporary support, and the method of obtaining transfers is improved by infringing in particular environmental situations; as an adaptation of the temperature at which the encaustic film is found during the detachment of its temporary support or immersion of said supports in warm water, that is, between 18 and 35 ° C. The latter situation is particularly positive in the stability of the film formed by the Thermoplastic Electromagnetic Image Transfer Compound by providing sufficient flexibility that has a positive impact on the safe handling of the films. Also, given the characteristics of the new supports that require immersion in warm water for activation, and since the transfer compound is thermoplastic, during the process of detachment of the film with the transferred image it is in a state of flexibility such It facilitates its handling. 35 That is, reducing the risk of their breakage. Embodiment of the inventionOnce the present invention has been described, it is further illustrated with the following examples of preparation of flexible and rigid supports until the image printing process is reached, together with the immersion transfer method to effect the release of the free support films 5 with The transferred image. 10 Example 1: Preparation of a flexible temporary support for use with the Thermoplastic Electromagnetic Image Transfer Compound specified in patent ES2524490 82. A 120 gram paper base was treated with a silicone film sprayed on one of its faces and It was allowed to dry. After this first treatment, he received another application of an aqueous solution of gum arabic (prepared with 60 grams of gum arabic per liter of water) in a spray, homogeneously on both sides. After the treatment and drying thereof, the support was subjected to a pressing and ironing process. In this example, a pressing of 15-20 kg / cm2 was performed, which was maintained for 24 hours. Regarding the ironing process, this was done by placing the treated paper between two layers of cloth and with a domestic iron. 20 By pressing and ironing a support was obtained with the minimum irregularities that could have an impact on the process of printing the image on it. 25 Once the flexible and water-soluble temporary support was obtained, an image with electrostatic technology was reproduced on it and, subsequently, on the support with the image the Thermoplastic Electromagnetic Image Transfer Compound was applied. 30 To apply the Thermoplastic Electromagnetic Image Transfer Compound on the image, a reservation of one centimeter was made per the perimeter of the image to be transferred using bodybuilder tape. Inside this reserve, the mass of Hot Thermoplastic Electromagnetic Image Transfer Compound was impregnated at a temperature of 35 125 ° C in the quantities necessary to obtain a film of 1 mm thickness. Then an encausto was made; for this, heat was applied by means of a hot air gun at its maximum power having theBe careful not to burn the Thermoplastic Electromagnetic Image Transfer Compound and degrade it and also provide a homogeneous surface. 5 This heating step of the Thermoplastic Transfer Compound is necessary to homogenize the surface. As many as may be necessary, in fact, a first application of the very uneven compound may require greater insistence on this step. 10 Thus, the image was attached to the Thermoplastic Electromagnetic Image Transfer Compound and allowed to cool to room temperature, the image being ready to be subjected to the temporary support shedding process by the new method described in Example 3. 15 Example 2: Preparation of a rigid temporary support for use with the Thermoplastic Electromagnetic Image Transfer Compound specified in patent ES2524490 82. An aluminum plate was adhered on a metal frame, and on it, a sheet-shaped layer of completely smooth paper pulp. A 120 gram paper base was adhered onto the paper pulp sheet and treated with a spray silicone film. After this first treatment he received another application of an aqueous solution of gum arabic, prepared with 90 grams of gum arabic per liter of water, in 25 sprays in a homogeneous way. After the treatment and drying thereof, the support was subjected to a pressing and ironing process as described in Example 1. On the last layer a film of Thermoplastic Compound 30 Electron Image Transfer was applied following the same steps as described in Example 1 at a temperature of 130 ° C and then an insert was made thereon, as described in example 1. Subsequently, on the Thermoplastic Electromagnetic Image Transfer Compound 35 of the perfected rigid temporary support , the printing of an image of dimensions: 40 x 70 cm was carried out, by means of Ink Jet reproduction technology with UV curing inks. In this way, the imageIt was ready to be subjected to the temporary support shedding process by the new method described in Example 4. Example 3: Method of transfer of electrographic image and obtaining 5 free flexible temporary support film whose materiality corresponds to the Thermoplastic Image Transfer Compound Electrographic, by immersion in water. The flexible temporary support prepared in Example 1, with 10 A4 dimensions, was used. For this method a vessel of dimensions greater than A4 and a depth of 10 cm, filled with water at a temperature of 28 ° C was required. The flexible support with the reproduced image was immersed in the water of the container until the film formed With the Thermoplastic Electromagnetic Image Transfer Compound, which retained the image, it gradually detached itself from its temporary support. In this way, an image was obtained in the form of a support-free film with the properties conferred on it by the thermoplastic Composite 20 Electromagnetic Compound Composing materials, ready to be adhered to its definitive support. Example 4: Method of transfer of electrographic image and obtaining a film free of rigid temporal support whose materiality corresponds to the Thermoplastic Composite Electromagnetic Image Transfer, by immersion in water. The rigid temporary support prepared in Example 2 was used. As a vessel a cuvette of 90 x 110 cm and 15 cm deep was used, filled with water at a temperature of 22 ° C The rigid support with the reproduced image was immersed in the water in the bucket until the film formed with the Thermoplastic Electromagnetic Image Transfer Compound, which retained the image, gradually detached itself from its temporary support. In this way, an image was obtained in the form of a support-free film with the properties that confer the thermoplastic compound forming materials.Electron Image Transfer, ready to be attached to its final support. 
    权利要求:
    Claims (1)
    [1]
    CLAIMS 1. Improvement in flexible temporary supports for transferring electrographic images with the Electrographic Image Transfer Thermoplastic Compound that comprises: 5 -a base of paper treated in a stratified way with an aqueous-based solution of gum arabic, with a base solution tragacanth gum aqueous, with a xanthan gum aqueous-based solution, with an aqueous-based solution of a cellulose adhesive, with an aqueous-based solution of acrylic or vinyl resins, with the application of a thin layer of silicone, or with combinations thereof; -an electrographic image; -a layer of Electrographic Image Transfer Thermoplastic Compound defined in ES2524490 82. 2. Improvement in rigid temporary supports for transferring electrographic images with Electrographic Image Transfer Thermoplastic Compound comprising: -a rigid frame; -a plate that gives rigidity and flatness to the support; - a sheet of a hydrophilic material; -a paper base treated in a stratified manner with an aqueous-based solution of gum arabic, with an aqueous-based solution of gum tragacanth, with an aqueous-based solution of xanthan gum, with an aqueous-based solution of a cellulose adhesive , with an aqueous based solution of acrylic or vinyl resins, with the application of a thin layer of silicone, or with combinations thereof; -a layer of Electrographic Image Transfer Thermoplastic Compound defined in ES2524490 82. 3. Improvement in rigid temporary supports according to claim 2 in which the rigid frame is made of metal, wood or plastic. 4. Improvement in rigid temporary supports according to any one of claims 2-3, in which the plate is made of metals, glass, crystal or plastic.5. Improvement in rigid temporary supports according to claim 4 in which the plate is made of aluminum. 6. Improvement in rigid temporary supports according to any of claims 2-5, in which the hydrophilic material is selected from paper pulp, hydrophilic cotton or other vegetable fibers, and / or bookbinder board. 10 7. Improvement in the method of transferring electrographic images created by analog means that includes: -printing an electrographic image, by electrostatic means, on a paper base treated in a stratified way with an aqueous-based solution of gum arabic, with a aqueous-based solution of gum tragacanth, 15 with an aqueous-based solution of xanthan gum, with an aqueous-based solution of a cellulose adhesive, with an aqueous-based solution of acrylic or vinyl resins, with the application of a thin layer silicone, or combinations thereof; -delimit the image to be transferred using a mold, a frame, a reserve; -Apply a layer of Electrographic Image Transfer Thermoplastic Compound defined in ES2524490 82 inside the mold, frame or reserve; -hydrate the printed image on the flexible support by immersion in water at 18-35 ° C to obtain the film free of support. 8. Refinement in the method of transferring electrographic images created in Ink Jet devices, the method includes: -on a rigid temporary support as defined in claims 2-6, printing the electrographic image by using a horizontal plotter; - immerse the image reproduced on the temporary rigid support in water at a temperature of 18-35 ° C to obtain the film free of support.
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    同族专利:
    公开号 | 公开日
    ES2666702B2|2018-10-01|
    引用文献:
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    US5948471A|1993-10-07|1999-09-07|Zimmer; Michael|Decorated ceramic and glass articles, process for their manufacture and ceramic dye compositions for carrying out the process|
    EP0751434A2|1995-06-26|1997-01-02|Ricoh Company, Ltd|Method of forming colored image by use of inorganic toner, inorganic toner for developing latent electrostatic image, and colored toner image bearing image transfer medium|
    US20100166986A1|2006-07-12|2010-07-01|Papierfabriken Cham-Tenero Ag|Carrier paper|
    US20120224013A1|2011-03-04|2012-09-06|Kangning Liang|Image transfer sheet with inkjet printed image and methods of making and using|
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    ES201600921A|ES2666702B2|2016-11-03|2016-11-03|Improvement in the temporary supports for transfer of electrographic images with the thermoplastic compound transferring electrographic images and in the transfer methods|ES201600921A| ES2666702B2|2016-11-03|2016-11-03|Improvement in the temporary supports for transfer of electrographic images with the thermoplastic compound transferring electrographic images and in the transfer methods|
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