JP2009083274A - Printed matter with writing layer, and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printed matter with writing layer by which an image with good image quality can be obtained by suppressing the generation of image defects. <P>SOLUTION: The method for manufacturing the printed matter with a writing layer has the step of obtaining a printed matter body by forming the image at least on one main surface of a base material having both main surfaces by a thermotransfer recording system and the step of finishing the printed matter body by forming the writing layer by transferring on at least one of both the main surfaces of the printed matter body. The printed matter with the writing layer has a base material, a printed matter body having the image formed by a melting type thermotransfer recording system formed at least on one main surface of the base material, and the writing layer formed by transferring as finishing on at least one of both the main surfaces of the printed matter body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a printed matter recorded by thermal transfer using a melt type or sublimation type thermal transfer ink, and particularly to a printed matter provided with a writing layer.

  Examples of a method for recording a desired image such as a face image on a personal authentication medium such as a license, an employee's card, a membership card, or a credit card include a melt type thermal transfer recording method and a sublimation type thermal transfer recording method.

  In the sublimation thermal transfer recording method, a sublimation thermal transfer ink ribbon formed by coating a support sheet with a sublimation or heat transferable dye so as to allow thermal transfer and an ink receiving layer made of a thermoplastic resin capable of receiving the sublimation dye are overlapped. In addition, a sublimation thermal transfer ink ribbon can be selectively heated based on predetermined image data using a thermal head or the like, and a desired image can be sublimated and recorded on a recording medium. According to this method, it is widely known that a color image rich in gradation can be easily recorded. However, in the sublimation thermal transfer recording method, if a foreign object is caught between the ink ribbon and the ink receiving layer during the thermal transfer recording, the transfer of the dye to the ink receiving layer is hindered, and a colorless point in the printed image is intended. There is a problem that dots of colors different from those appear on the face image.

  Further, the melt type thermal transfer recording method was obtained by coating a melt type thermal transfer ink obtained by dispersing a pigment or dye in a heat melt binder such as resin or wax on an ink receiving layer and a support sheet. A transfer ribbon is used, and this is selectively heated using a thermal head or the like based on predetermined image data, and the molten thermal transfer ink is transferred to the recording medium together with the binder to record a desired image. is there. According to this method, it is possible to select inorganic and organic pigments that have sufficiently better light resistance than sublimation thermal transfer inks. Further, by devising a resin, wax, or the like used for the binder, it is possible to provide an image that is hardly scratched and has excellent solvent resistance. In addition, functional materials such as fluorescent pigments and magnetic materials can be mixed in the melt-type thermal transfer ink, and thus a special ink with high security can be obtained. In the case of the sublimation thermal transfer recording method, a recording medium and a sublimation type thermal transfer ink must be used in combination with an appropriate ink receiving layer. In the melt type thermal transfer recording method, the surface has an adhesive property to the binder. Any recording medium can be used, and a wide variety of recording media can be selected. However, even in the melt-type thermal transfer recording method, as in the sublimation-type thermal transfer recording, if a foreign object is caught between the ink ribbon and the ink receiving layer during the thermal transfer recording, the transfer to the ink receiving layer is hindered, and the print image is colorless. However, there is a problem that image defects such as a point of a color different from the intended one occur and the image quality deteriorates.

Examples of the generation source of the foreign matter that causes such image defects include a writing layer provided on a personal authentication medium so that writing can be performed with a pencil, a ballpoint pen, a water-based sign pen, a seal stamp, or the like. The writing layer is formed using hygroscopic fine particles such as silica and calcium carbonate (see, for example, Patent Document 1). The above-described image defects are caused by particles such as silica and calcium carbonate contained in the writing layer being sandwiched between the ink ribbon and the base material or the receiving layer at the time of image formation.
JP 2006-21411

  An object of the present invention is to form an image of a printed matter with a writing layer by using sublimation thermal transfer recording or melt thermal transfer recording without impairing the image quality.

  The method for producing a printed matter with a writing layer of the present invention comprises a step of forming an image by a thermal transfer recording method on at least one principal surface of a substrate having both principal surfaces, and obtaining both principal surfaces of the printed matter main body. At least one of them includes a step of forming a writing layer by transfer to finish a printed material body.

  A printed matter with a writing layer of the present invention comprises a substrate, a printed body having an image formed by a melt-type thermal transfer recording method formed on at least one principal surface of the substrate, and both principal surfaces of the printed body. At least one of them is provided with a writing layer formed by transfer as a finish.

  A printed material with a writing layer includes a substrate, a receiving layer formed on at least one main surface of the substrate, a printed material body having an image formed on the receiving layer by a sublimation thermal transfer recording method, and the printed material body. A writing layer formed by transfer as a finish is provided on at least one of the two main surfaces.

  The writing layer transfer ribbon of the present invention comprises a support and a writing layer provided on the support in a peelable manner.

  When the present invention is used, an image having good image quality can be obtained in the printed matter with a writing layer, in which image defects hardly occur.

  The method for producing a printed matter with a writing layer according to the present invention includes a step of obtaining a printed matter body and a step of finishing the printed matter body. The step of obtaining a printed body includes forming an image by a thermal transfer recording method on at least one main surface of a substrate having both main surfaces. In addition, the step of finishing the printed body includes forming a writing layer transferred by pressure and / or heat on at least one of the two main surfaces of the printed body.

  Moreover, the printed material with a writing layer according to the present invention is a printed material obtained by the above-described manufacturing method, and includes at least a main body and a printed material main body having an image formed on the base material and both main surfaces of the printed main body. One includes a writing layer transferred by pressure and / or heat.

  In the present invention, since a writing layer is not formed at the time of image formation for obtaining a printed material body, silica or carbonic acid contained in the writing layer is different from a case where a writing layer is provided on a substrate before image formation. Foreign matter such as calcium does not get caught between the ink ribbon and the base material or the receiving layer. For this reason, according to the present invention, in a printed matter with a writing layer, an image defect due to a foreign matter hardly occurs and an image having a good image quality can be obtained.

  In this printed material main body, a melt type thermal transfer ink or a sublimation type thermal transfer ink can be used as the thermal transfer recording ink used for image formation.

  The image can be formed directly on the substrate, or can be formed on this receptor layer by further forming a receptor layer on the substrate.

  For example, when using a melt-type thermal transfer ink, the image can be formed directly on the substrate. Alternatively, a melt-type thermal transfer ink receiving layer can be further provided on the substrate, and the melt-type thermal transfer ink receiving layer can be formed on the melt-type thermal transfer ink receiving layer.

  For example, when sublimation type thermal transfer ink is used, the image can be formed on a sublimation type thermal transfer ink receiving layer by further providing a sublimation type thermal transfer ink receiving layer on the substrate.

  Here, the image refers to an image having a pattern such as a face, a character, and a pattern.

  This image can be formed in the state of a melt-type thermal transfer ink image layer on a substrate or an image-receiving layer when a melt-type thermal transfer ink is used, and when sublimation-type thermal transfer ink is used, the image is sublimated in the image-receiving layer. It can be formed in a state where the thermal transfer ink is soaked.

  The writing layer can be formed by a thermal transfer recording method in which a writing layer transfer ribbon is applied onto the receiving layer or the base material layer and heat and / or pressure is applied from the support side.

  The writing layer transfer ribbon of the present invention includes a support and a writing layer that is detachably provided on the support.

  By using the writing layer transfer ribbon of the present invention, it is possible to easily form a writing layer on the obtained printed material body after image formation, even if a writing layer is provided on the substrate before image formation. It is. Thus, by forming a writing layer on the printed material body after image formation, image defects due to foreign matters such as silica and calcium carbonate contained in the writing layer are unlikely to occur, and the image has a good image quality. A printed matter with a writing layer can be provided.

  Further, an adhesive layer can be further provided on the writing layer.

  By providing the adhesive layer, the writing layer can be more firmly adhered to the surface of the printed material body.

  The writing layer is preferably excellent in hygroscopicity so that it can be written, stamped, etc. using an aqueous writing instrument, pencil, vermilion or the like.

  As a material for the writing layer, for example, a mixture of a binder resin and a hygroscopic material can be used.

  As the binder resin, for example, polyvinyl alcohol resin, vinyl acetate resin, cellulose resin and the like can be used.

  As the hygroscopic material, for example, white fine particles such as silica fine particles, calcium carbonate fine particles, and titanium oxide fine particles can be used.

  The mixing weight ratio of the binder resin and the hygroscopic material is preferably in the range of 8: 2 to 5: 5.

  When the amount of the binder resin is more than the above range, the writing property tends to be lowered, and when the amount of the hygroscopic material is more than the above range, the coating film becomes brittle and the strength tends to be lowered.

  As the base material, paper and plastic films such as polyethylene terephthalate can be used.

  Hereinafter, the present invention will be specifically described with reference to the drawings.

  FIG. 1 is a schematic cross-sectional view showing an example of a configuration of a writing layer transfer ribbon according to the present invention.

  As shown in the figure, this writing layer transfer ribbon 10 is made of, for example, a binder resin such as polyvinyl alcohol resin on a support sheet 1 made of, for example, a belt-like polyester film, and calcium carbonate or the like dispersed in the binder resin. The writing layer 2 containing hygroscopic fine particles is laminated.

  For the writing layer 2, for example, a binder layer and a solvent suitable for the hygroscopic material are added to prepare a writing layer coating solution, and this writing layer coating solution is used for gravure coating, reverse coating, die coating, wire bar coating, and hot coating. It can be formed by a method of applying and drying on the support sheet 1 by melt coating or the like.

  The writing layer transfer ribbon 10 can be applied to a printed material main body on which a face image or the like is recorded to form a writing layer on desired portions of both main surfaces of the printed material main body.

  2 and 3 are schematic cross-sectional views showing an example of the configuration of a printed matter obtained using the writing layer transfer ribbon 10 shown in FIG.

  As shown in FIG. 2, the printed matter 11 has a configuration in which the image 4 is formed on one main surface of the base material 5 made of paper, for example, and the writing layer 2 is stacked on the other main surface of the base material 5.

  The image 4 can be formed by applying a sublimation-type or melt-type thermal transfer ink ribbon on one main surface of a substrate and performing thermal transfer recording using a heating recording means such as a thermal head.

  The writing layer 2 can be formed by superposing the transfer type writing layer 10 on the surface of the base material 5 and applying pressure and / or heat after performing thermal transfer recording.

  The image 4 can be formed by applying a sublimation type or melt type thermal transfer ink ribbon to the surface of the ink receiving layer 3 on the substrate 5 and performing thermal transfer recording using a heating recording means such as a thermal head. it can.

  3 has the same configuration as that of FIG. 2 except that the ink receiving layer 3 is further provided between the base material 5 and the image layer 4.

  Here, the image layer 4 is formed on one main surface of the substrate 5 and the writing layer 2 is formed on the other main surface, respectively, but can also be formed on the same main surface. It is also possible to form the image layer 4 on both main surfaces and to form the writing layer 2 on both main surfaces.

  Examples of the solvent used in the writing layer coating solution include water, ethanol, methyl ethyl ketone, toluene, and a mixed solution of methyl ethyl ketone and toluene in a volume ratio of 1: 1.

  Hereinafter, the present invention will be specifically described with reference to examples.

Example 1
A transparent polyester film (Mitsubishi Chemical Polyester Co., Ltd., product model number: S100) having a thickness of 25 μm was prepared as a support sheet.

  As a writing layer material, polyvinyl alcohol resin (manufactured by Denki Kagaku Kogyo Co., Ltd., product model number: DENKA POVAL K-05), calcium carbonate particles (manufactured by Maruo Calcium Co., Ltd., product model number: MSK-K), and as an adhesive layer material, An ethylene-vinyl acetate copolymer resin (manufactured by Clariant Polymer Co., Ltd., product model number: Mobile 081F) was prepared, and a writing layer coating solution and an adhesive layer coating solution having the following compositions were prepared.

Writing layer coating liquid Warm water 40 parts by weight Polyvinyl alcohol resin 48 parts by weight Calcium carbonate particles 12 parts by weight Adhesive layer coating liquid Water 50 parts by weight Ethylene-vinyl acetate copolymer resin 50 parts by weight The above-mentioned writing layer coating liquid and Using the gravure coater, apply the above adhesive layer coating solution in such a manner that the coating thickness after drying is 10 μm for the writing layer and 1 μm for the adhesive layer, and then heated and dried at 120 ° C. for 2 minutes, A transfer ribbon was obtained.

  Next, a card substrate having a size of 54 mm × 85,5 mm and a thickness of 0,76 mm made by Nippon Data Card Co., Ltd. provided with a sublimation type thermal transfer receiving layer made of vinyl chloride resin on one main surface thereof is prepared. Then, a face image was recorded on the sublimation type thermal transfer receiving layer using a sublimation type thermal transfer recording ink ribbon. Thereafter, the writing layer transfer ribbon is applied to the vicinity of the face image, and is passed through a laminator LPD2306City manufactured by Fuji Plastic Co., Ltd. adjusted to a heat roller temperature of 120 ° C. Was peeled off to obtain a printed matter with a writing layer.

  Visually, a sufficiently high-quality face image was obtained.

  In addition, when the writing layer was written using a water-based ballpoint pen and a fountain pen and the writing property was examined, the drying property of the ink was good and the writing property was good.

  Furthermore, a printed matter for test was prepared, and the following image defect occurrence frequency evaluation test was performed.

Image defect occurrence frequency evaluation test 100 test prints were obtained in the same manner as in Example 1 except that a gray solid image was formed instead of the face image.

  The obtained printed matter is visually observed by magnifying with a loupe as necessary, and the number of colorless dots on the image, and the number of color points different from the intended one, is counted as the number of image defects. The occurrence frequency of image defects was evaluated by ◯ when the number was less than 15 and x when the number was 15 or more.

  The results are shown in Table 1 below.

Example 2
A printed matter with a writing layer was obtained in the same manner as in Example 1 except that the composition of the writing layer coating solution was changed as follows.

Writing layer coating solution Warm water 40 parts by weight Polyvinyl alcohol resin 30 parts by weight Calcium carbonate particles 30 parts by weight The obtained printed matter gave a sufficiently high-quality face image by visual observation.

  Moreover, when the writing layer of the obtained printed matter was examined for the writing property in the same manner as in Example 1, the drying property of the ink was good and the writing property was good.

  Moreover, the printed matter for test was produced similarly to Example 1, and the image defect occurrence frequency evaluation test was done.

  The obtained results are shown in Table 1 below.

Example 3
A printed matter with a writing layer was obtained in the same manner as in Example 1 except that the composition of the writing layer coating solution was changed as follows.

Writing layer coating solution Warm water 40 parts by weight Polyvinyl alcohol resin 24 parts by weight Calcium carbonate particles 36 parts by weight The obtained printed matter was visually good in the quality of the face image.

  Moreover, when the writing layer of the obtained printed matter was examined for the writing property in the same manner as in Example 1, the drying property of the ink was good and the writing property was good.

  Moreover, the printed matter for test was produced similarly to Example 1, and the image defect occurrence frequency evaluation test was done.

  The obtained results are shown in Table 1 below.

Example 4
A printed matter with a writing layer was obtained in the same manner as in Example 1 except that the composition of the writing layer coating solution was changed as follows.

Writing layer coating solution Warm water 40 parts by weight Polyvinyl alcohol resin 54 parts by weight Calcium carbonate particles 6 parts by weight As for the obtained printed matter, a sufficiently high-quality face image was obtained visually.

  Moreover, when the writing layer of the obtained printed matter was examined for writing property in the same manner as in Example 1, it took some time to dry the ink and the writing property was slightly inferior.

  Moreover, the printed matter for test was produced similarly to Example 1, and the image defect occurrence frequency evaluation test was done.

  The obtained results are shown in Table 1 below.

Comparative Example 1
A commercially available card substrate made by Nippon Data Card Co., Ltd. having a sublimation thermal transfer receiving layer made of vinyl chloride resin on one main surface thereof, and a writing having the same composition as in Example 2 on the other main surface A card base material with a writing layer was obtained by applying and drying a layer coating solution.

  A face image was recorded on the sublimation type thermal transfer receiving layer of the card base with a writing layer using a sublimation type thermal transfer recording ink ribbon, and a printed matter with a writing layer was obtained.

  The obtained printed matter was visually good in the quality of the face image.

  Moreover, when the writing layer of the obtained printed matter was examined for the writing property in the same manner as in Example 1, the drying property of the ink was good and the writing property was good.

  Moreover, the printed matter for test was produced similarly to Example 1, and the image defect occurrence frequency evaluation test was done.

  The obtained results are shown in Table 1 below.

  Using the applicator, the writing layer coating solution is applied in the vicinity of the part of the sublimation type thermal transfer recording card base material where the face image is recorded, and the coating thickness after drying is 10 μm, at 120 ° C. for 2 minutes, The card base material with a writing layer was obtained by heating and drying.

  Next, using the same sublimation type thermal transfer recording ink ribbon as in Example 1, a face image was recorded to obtain a printed matter.

  Visually, a sufficiently high-quality face image was obtained.

  About the writing layer of the obtained printed matter, when the writing property was investigated like Example 1, the drying property of the ink was favorable and the writing property was favorable.

  Moreover, the printed matter for test was produced similarly to Example 1, and the image defect occurrence frequency evaluation test was done.

  The obtained results are shown in Table 1 below.

  As is apparent from the above results, those in which the writing layer was formed by the transfer type writing layer after printing the image had few image defects. If the resin composition used for the melt-type thermal transfer ink image-receiving layer and the adhesive on the substrate are within the scope of the present invention, the required gradation can be easily obtained, sufficient adhesive strength can be obtained, and light resistance can be obtained. Was good.

  However, as shown in Comparative Example 1, in the case where the writing layer was formed before printing, many image defects occurred.

Example 5
A support sheet similar to that of Example 1 was prepared.

  As the writing layer material, acrylic resin (Dianar BR-60 manufactured by Mitsubishi Rayon Co., Ltd.), silica particles (Nippil NS-T manufactured by Tosoh Silica Co., Ltd.), and polyester resin (Toyobo Co., Ltd.) as the adhesive layer material. ) Byron 240) was prepared, and a writing layer coating solution and an adhesive layer coating solution having the following composition were prepared.

Writing layer coating solution Methyl ethyl ketone 20 parts by weight Toluene 20 parts by weight Acrylic resin 42 parts by weight Silica particles 18 parts by weight Adhesive layer coating solution Methyl ethyl ketone 25 parts by weight Toluene 25 parts by weight Polyester 50 parts by weight The above writing film coating solution Using the gravure coater, apply the above adhesive layer coating solution in such a manner that the coating thickness after drying is 10 μm for the writing layer and 1 μm for the adhesive layer, and then heated and dried at 120 ° C. for 2 minutes, A transfer ribbon was obtained.

  Next, a card substrate similar to that of Example 1 was prepared, and a face image was recorded on the sublimation type thermal transfer receiving layer using a sublimation type thermal transfer recording ink ribbon. Thereafter, the writing layer transfer ribbon was applied in the vicinity of the face image, and a printed matter with a writing layer was obtained in the same manner as in Example 1.

  Visually, a sufficiently high-quality face image was obtained.

  In addition, when the writing layer was written using a water-based ballpoint pen and a fountain pen and the writing property was examined, the drying property of the ink was good and the writing property was good.

  The printed matter obtained gave a sufficiently high-quality face image by visual observation.

  Moreover, when the writing layer of the obtained printed matter was examined for the writing property in the same manner as in Example 1, the drying property of the ink was good and the writing property was good.

  Moreover, the printed matter for test was produced similarly to Example 1, and the image defect occurrence frequency evaluation test was done.

The obtained results are shown in Table 1 below.

  In the table, in the column of writability, a case where the writability is good is indicated by ◯, and a case where the writability is slightly inferior but can be used is indicated by Δ.

  As shown in the table, Examples 1, 2 and 5 had good writing properties and were good without image defects.

  In contrast, in Comparative Example 1 in which a card substrate with a writing layer was prepared and then image formation was performed, many image defects occurred.

  In Example 3, the ratio of the hygroscopic fine particles was larger than the ratio of the binder in the writing layer, and the number of image defects was slightly increased. This is presumably because the hygroscopic fine particles released from the binder adhered to the card surface.

  Further, in Example 4, the ratio of the binder in the writing layer was extremely larger than the ratio of the hygroscopic fine particles, and the writing property was somewhat lowered.

  From this, it can be seen that the weight ratio of the binder resin in the writing layer to the hygroscopic material is preferably 8: 2 to 5: 5.

Schematic sectional view showing an example of the configuration of the transfer type writing layer of the present invention Schematic sectional view showing the configuration of an example of the printed material of the present invention Schematic sectional view showing the configuration of another example of the printed material of the present invention

Explanation of symbols

        DESCRIPTION OF SYMBOLS 1 ... Support body, 2 ... Writing layer, 3 ... Ink receiving layer, 4 ... Image layer, 5 ... Base material, 10 ... Transfer type writing layer, 11 ... Printed matter

Claims (5)

  Forming an image on at least one principal surface of a substrate having both principal surfaces by a thermal transfer recording method to obtain a printed material body, and forming a writing layer on at least one of the two principal surfaces of the printed material body by transfer A method for producing a printed matter with a writing layer, comprising a step of finishing the printed matter body.   A printed material body having an image formed by a melt-type thermal transfer recording system formed on at least one principal surface of the substrate, and at least one of both principal surfaces of the printed material body by transfer as a finish A printed matter with a writing layer comprising the formed writing layer.   A printed material body having a substrate, a receiving layer formed on at least one principal surface of the substrate, an image formed on the receiving layer by a sublimation thermal transfer recording method, and both principal surfaces of the printed material body A printed matter with a writing layer, comprising at least one writing layer formed by transfer as a finish.   A writing layer transfer ribbon comprising: a support; and a writing layer provided on the support in a peelable manner.   The writing layer transfer ribbon according to claim 4, wherein an adhesive layer is further provided on the writing layer.

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