JP4300413B2 - Intermediate transfer recording medium and printed matter - Google Patents

Description

  The present invention relates to an intermediate transfer recording medium and a printed matter.

  Conventionally, an image such as a gradation image, a monotonous image such as a character, a symbol, or the like is formed on a base material using a thermal transfer method. As the thermal transfer system, a thermal sublimation transfer system and a thermal melt transfer system are widely used.

  Among these, the thermal sublimation transfer method uses a thermal transfer sheet in which a dye layer in which a sublimable dye used as a coloring material is melted or dispersed in a binder resin is supported on a substrate, and the thermal transfer sheet is stacked on the substrate to form a thermal head. By applying energy according to image information to a heating device such as a sublimation dye contained in a dye layer on a thermal transfer sheet, the image is formed by transferring the dye to a substrate.

  This heat-sensitive sublimation transfer method can control the amount of dye transfer in dot units according to the amount of energy applied to the thermal transfer sheet, and is therefore excellent in forming gradation images, and has the advantage of easy formation of characters, symbols, etc. Have.

  By the way, various cards such as an identification card, a driver's license, a membership card, and an ID card are widely used. These cards record various information that reveals the identity of the owner. In particular, in an ID card or the like, an image of a face photograph is important together with character information such as an address and name, and the image is required to have a property (durability) that does not change or deteriorate over a long period of time. The

  Currently, the heat-sensitive sublimation transfer method is employed for recording information on such cards. However, the gradation image and the monotonic image formed by the heat-sensitive sublimation transfer method are inferior in resistance to solvents, plasticizers and the like because the transferred dye exists on the surface of the transfer target. For this reason, attempts have been made to improve the durability of images in cards that require durability, such as ID cards on which facial photographic images are recorded.

  Patent Document 1 includes a protective laminate that can be peeled off on at least a part of one surface of a base sheet, and the protective laminate is obtained by laminating a protective layer and an adhesive layer in this order from the base sheet side. The protective layer discloses a thermal transfer sheet mainly composed of solvent-insoluble organic fine particles and a binder resin such as polyvinyl alcohol.

  The thermal transfer sheet disclosed in Patent Document 1 is used for transferring a protective laminate to a transfer target (image receiving sheet) on which an image is formed, and improving the durability of the image.

By using the thermal transfer sheet described in Patent Document 1, the durability of the image can be improved to a practical level, but the image on which the protective layer is formed (protected image) is further improved in durability. It is requested to do. For example, when a protective image is brought into contact with a plasticizer-containing soft vinyl chloride film for a long period of time, it is desired that the image does not shift to the film and the image does not deteriorate.
JP-A-11-105438 (Claims)

  An object of the present invention is to provide an intermediate transfer recording medium capable of imparting excellent durability to an image formed on a transfer target.

As a result of various studies to solve the above problems, the present inventor has found that when an intermediate transfer recording medium shown below is used, an image having excellent durability can be formed on a transfer target. The present invention has been completed based on such findings.
1. The present invention provides an intermediate transfer recording medium in which a release layer, a plasticizer layer and a receiving layer are sequentially provided on one surface of a base film, and used to transfer an image formed on the receiving layer surface to a transfer target. Because
Provided is an intermediate transfer recording medium in which the resin constituting the plasticizer layer is an acrylic copolymer resin containing at least two components of methyl methacrylate, methacrylamide and methacrylic acid.
2. The present invention provides the intermediate transfer recording medium according to 1 above, wherein the acrylic copolymer resin is an acrylic copolymer resin having a solubility parameter value of 11 or more and a glass transition temperature of 70 ° C. or less.
3. The present invention provides the intermediate transfer recording medium according to 1 or 2, wherein the acrylic copolymer resin is a methyl methacrylate-methacrylic acid copolymer resin.
4). The present invention forms an image by thermal transfer on the receiving layer surface of the intermediate transfer recording medium according to any one of 1 to 3, and transfers the release layer, the plasticizer layer and the receiving layer of the recording medium to a transfer target. The prints obtained are obtained.

Intermediate transfer recording medium The intermediate transfer recording medium of the present invention is obtained by sequentially providing a release layer, a plasticizer layer and a receiving layer on one surface of a base film.

  The intermediate transfer recording medium of the present invention will be described with reference to the drawings.

  FIG. 1 is a sectional view showing an example of the intermediate transfer recording medium of the present invention. In FIG. 1, an intermediate transfer recording medium 1 of the present invention has a release layer 3, a plasticizer layer 4, and a receiving layer 5 sequentially laminated on one surface of a base film 2.

  FIG. 2 is a sectional view showing another example of the intermediate transfer recording medium of the present invention. In FIG. 2, the intermediate transfer recording medium 1 of the present invention has a release layer 3, a plasticizer layer 4 and a receiving layer 5 sequentially laminated on one surface of a base film 2, and the other surface of the base film 2. The back layer 6 is formed.

  FIG. 3 is a sectional view showing another example of the intermediate transfer recording medium of the present invention. In FIG. 3, the intermediate transfer recording medium 1 of the present invention has a release layer 3, a plasticizer layer 4, an anchor layer 7 and a receiving layer 5 sequentially laminated on one surface of a base film 2.

As the base film , the same base film as that used for known thermal transfer sheets can be used, and the base film is not particularly limited. Specific examples of the base film include polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyphenylene sulfide, polyether ketone, polyether sulfone and other high heat-resistant polyesters; polypropylene, polycarbonate, cellulose acetate, polyethylene derivatives, Examples thereof include plastic films such as polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide, polyimide, polymethylpentene, and ionomer, and laminates thereof. The plastic film may be stretched or unstretched.

  Of these, polyethylene terephthalate is preferred.

  The thickness of the base film can be appropriately selected in consideration of strength, heat resistance and the like, but is usually about 1 to 100 μm, preferably about 19 to 38 μm.

Release layer The release layer contains a binder resin.

  As the binder resin, known thermoplastic resins and thermosetting resins used in this field can be widely used.

  Examples of the thermoplastic resin include acrylic resins such as polymethyl methacrylate, polyethyl methacrylate, and polybutyl acrylate; vinyl resins such as polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl alcohol, and polyvinyl butyral. Resins; Cellulose derivatives such as ethyl cellulose, nitrocellulose, and cellulose acetate are exemplified.

  Examples of the thermosetting resin include unsaturated polyester resins, polyester resins, polyurethane resins, amino alkyd resins, and the like.

  As the binder resin, a thermoplastic resin is preferable, and an acrylic resin is more preferable.

  These binder resins may be used alone or in combination of two or more.

  The release layer may contain various additives in addition to the binder resin.

  Examples of such additives include waxes such as polyethylene wax, polyester wax and silicone wax; releasable resins such as silicone resin, melamine resin and fluorine resin; powder such as talc and fine powder silica; interface Examples include activators, lubricants such as metal soaps, ultraviolet absorbers, antioxidants, and fluorescent brighteners.

  The ratio of the binder resin and the additive contained in the release layer is not particularly limited, but the additive is usually about 0.1 to 30 parts by weight, preferably 0.1 to 100 parts by weight of the binder resin. It is good to contain about 20 parts by weight.

  The release layer is a gravure printing method, a screen printing method, a gravure ink, which is obtained by adding an additive necessary for the binder resin to the above base film and dissolving or dispersing it in a solvent such as water or an organic solvent. It is formed by applying and drying according to a normal coating method such as a reverse roll coating method using a plate.

  The thickness of the release layer is usually about 0.1 to 10 μm, preferably about 0.5 to 5 μm.

Plasticizer layer The resin constituting the plasticizer layer of the present invention is an acrylic copolymer resin.

  Examples of the acrylic copolymer resin include a copolymer resin composed of two or more monomers selected from the group consisting of methyl methacrylate, methacrylamide and methacrylic acid. Specific examples of such copolymer resins include methyl methacrylate-methacrylamide copolymer resins, methyl methacrylate-methacrylic acid copolymer resins, methacrylamide-methacrylic acid copolymer resins, and methyl methacrylate-methacrylamide-methacrylic acid copolymers. Polymeric resin.

  In the present invention, among the copolymer resins, an acrylic copolymer resin having a solubility parameter (SP) value of 11 or more and a glass transition temperature (Tg) of 70 ° C. or less is preferable.

  The plasticizer layer is a gravure printing method in which an acrylic copolymer resin or other additive is dissolved or dispersed in a solvent such as water or an organic solvent on a release layer formed on a base film. It is formed by applying and drying in accordance with a normal coating method such as a screen printing method or a reverse roll coating method using a gravure plate.

  The thickness of the plasticizer layer is usually about 0.1 to 10 μm, preferably about 0.5 to 5 μm.

The receiving layer receiving layer (image receiving layer) is composed of at least a binder resin, and may contain various additives such as a release agent as required.

  As the binder resin, it is preferable to use a resin that is easily dyed by sublimation dyes. Examples of such binder resins include polyolefin resins such as polypropylene; halogenated resins such as polyvinyl chloride and polyvinylidene chloride; vinyl chloride-vinyl acetate copolymers, ethylene-vinyl acetate copolymers, vinyl acetate-acrylic. Vinyl resins such as acid methyl copolymers and vinyl acetate-ethyl acrylate copolymers; polyester resins; polystyrene resins; acrylic-styrene resins; polyamide resins; olefins such as ethylene and propylene and other vinyl monomers And copolymer; ionomer; cellulose derivative and the like.

  Among these binder resins, vinyl resins such as polyvinyl chloride, acrylic-styrene resins, and polyester resins are more preferable.

  These binder resins may be used alone or in combination of two or more.

  The receiving layer preferably contains a release agent together with the binder resin in order to prevent thermal fusion with the thermal transfer sheet.

  Examples of the release agent include silicone oils such as amino-modified silicone, epoxy-modified silicone, and OH-modified silicone, phosphate ester surfactants, fluorine compounds, and the like. Among these release agents, silicone oil is preferable.

  The content of the release agent is usually about 0.2 to 40 parts by weight, preferably about 0.5 to 30 parts by weight with respect to 100 parts by weight of the binder resin.

  In the present invention, by containing an ultraviolet absorber in the receiving layer, it is possible to improve light resistance and weather resistance, such as an image of the transferred material after being transferred. Examples of the ultraviolet absorber to be used include salicylate-based, benzophenone-based, benzotriazole-based, substituted acrylonitrile-based, nickel chelate-based, hindered amine-based and the like, which are conventionally known organic ultraviolet absorbers. The ultraviolet absorber is, for example, an ultraviolet-absorbing resin into which an addition polymerizable double bond such as a vinyl group, an acryloyl group or a methacryloyl group, or an alcoholic hydroxyl group, amino group, carboxyl group, epoxy group or isocyanate group is introduced. It may be.

  The content of the ultraviolet absorber is usually about 10 to 40% by weight, preferably about 25 to 35% by weight in the receiving layer.

  The receptor layer is an ink obtained by dissolving or dispersing the binder resin and other additives in a solvent such as water or an organic solvent on the plasticizer layer formed as described above. It is formed by applying and drying in accordance with a normal coating method such as a reverse roll coating method using a glass.

  The thickness of the receptor layer is usually about 0.1 to 10 μm, preferably about 0.5 to 5 μm.

Anchor layer The anchor layer may be formed between the plasticizer layer and the receiving layer for the purpose of improving the adhesion of these layers. As the material for forming the anchor layer, conventionally known materials can be used and are not particularly limited. Moreover, the formation method can employ | adopt a well-known method.

Back layer Back layer prevents thermal fusion with a heating device such as a thermal head or a line heater when transferring a color material from a thermal transfer sheet and when transferring an image receiving layer to a transfer target. In order to perform smoothly, it can provide in the other surface at the side of the image receiving layer of the base film which contacts a heating device.

  Examples of the resin constituting the back layer include cellulose resins such as ethyl cellulose, hydroxy cellulose, hydroxypropyl cellulose, methyl cellulose, cellulose acetate, cellulose acetate butyrate, and nitrocellulose; polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyvinyl acetal, Vinyl resins such as polyvinyl pyrrolidone; acrylic resins such as polymethyl methacrylate, polyethyl acrylate, polyacrylamide, acrylonitrile-styrene copolymer; polyamide resins; polyvinyl toluene resins; coumarone indene resins; polyester resins; Resin; Natural or synthetic resin such as silicone-modified or fluorine-modified urethane can be used.

  These resins are used singly or in combination of two or more.

  From the viewpoint of further improving the heat resistance of the back layer, among the above resins, a resin having a reactive group such as a hydroxyl group (for example, butyral resin, acetal resin, etc.) is used, and a polyisocyanate is used as a crosslinking agent. Is preferably used in combination as a crosslinked resin layer.

  Furthermore, for the purpose of imparting slidability with the thermal head, a solid or liquid release agent or lubricant may be blended in the back layer.

  Examples of release agents or lubricants include various waxes such as polyethylene wax and paraffin wax; higher aliphatic alcohols, organopolysiloxanes, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants Examples thereof include various surfactants such as an activator and a fluorosurfactant; fine particles of inorganic compounds such as organic carboxylic acids and derivatives thereof, fluororesins, silicone resins, talc, and silica.

  The amount of lubricant contained in the back layer is usually about 5 to 50% by weight, preferably about 10 to 30% by weight in the back layer.

  The back layer is a reverse roll coating method using a gravure printing method, a screen printing method, and a gravure plate, which is obtained by dissolving or dispersing the above resin and other additives in a solvent such as water or an organic solvent on a base film. It is formed by applying and drying according to a normal coating method such as.

  The thickness of the back layer is usually about 0.1 to 10 μm, preferably about 0.5 to 5 μm.

  The intermediate transfer recording medium of the present invention may be provided with a detection mark so that the image is transferred to a predetermined position of the receiving layer.

Thermal transfer sheet The thermal transfer sheet is used to transfer characters such as addresses and names, facial photo images, and the like to the intermediate transfer recording medium of the present invention.

  A conventionally known thermal transfer sheet can be used.

  The color material layer provided on the thermal transfer sheet is formed of a heat-meltable ink, an ink containing a sublimation dye, or the like. The color material layer is appropriately selected and provided from a hot-melt ink and a sublimation dye ink according to the intended print product. The color material layer composed of sublimation dyes used to obtain printed matter with excellent gradation is used in the order of each sublimation dye such as yellow, magenta, cyan, black, etc. as necessary. And can be configured. In addition, in a single color binary image such as letters and numbers, a thermal transfer sheet provided with a color material layer made of a heat-meltable ink having excellent density and sharpness alone or a color material layer composed of the above-described sublimation dye A heat-meltable ink layer can be provided in the surface order and used.

  For transferring the color material to the receiving layer of the intermediate transfer recording medium, conventionally known means can be employed.

  For example, an intermediate transfer recording medium and a thermal transfer sheet provided with a color material layer on a base material are prepared, and a thermal transfer sheet is provided on a receiving layer of the intermediate transfer recording medium between a heating device such as a thermal head and a platen roll. The intermediate transfer recording medium and the thermal transfer sheet are pressed against each other so that the color material layer is in contact, and the heat generating portion of the heating device is selectively heated according to the image information, and the color material layer color material on the thermal transfer sheet is intermediate transferred. The image is transferred by transferring to the receiving layer of the recording medium.

  Since the image finally obtained by the present invention has a mirror image relationship with the image formed on the receiving layer of the intermediate transfer recording medium, it is necessary to previously form characters, symbols, etc. as a reverse image.

Transferred Image The image formed on the receiving layer of the intermediate transfer recording medium of the present invention is transferred to the transfer target.

  The transfer target is not particularly limited, and any transfer target widely known in this field can be used. Examples of such a material to be transferred include natural fiber paper, coated paper, tracing paper, plastic film that is not deformed by heat during transfer, glass, metal, ceramics, wood, and cloth.

  The shape of the transfer object is not particularly limited as long as the image formed on the receiving layer of the intermediate transfer recording medium of the present invention can be transferred.

Printed matter A printed matter is obtained by transferring an image formed on the receiving layer of the intermediate transfer recording medium of the present invention to a transfer medium.

  FIG. 4 is a cross-sectional view showing an example of a printed matter. In FIG. 4, a receiving layer 5, a plasticizer layer 4, and a release layer 3 on which an image 8 made of a color material is formed are formed on a transfer target 7.

  In transferring the image formed on the receiving layer of the intermediate transfer recording medium of the present invention to the transfer material, a transfer method known in this field can be widely employed.

  For example, a thermal transfer image is formed on the receiving layer of the intermediate transfer recording medium, and then the intermediate transfer recording medium and the transfer target are pressed against each other so that the formed thermal transfer image is in contact with the transfer target. The image is transferred to a transfer medium by a heating means such as a stamp or a heat roll.

  Examples of the printed matter of the present invention include stock certificates, securities, certificates, passbooks, boarding tickets, car horse tickets, stamps, stamps, appreciation tickets, admission tickets, tickets, etc .; cash cards, credit cards, prepaid cards, Cards such as member cards, greeting cards, postcards, business cards, driver's licenses, IC cards, optical cards; cases such as cartons and containers; bags; forms, envelopes, tags, OHP sheets, slide films, bookmarks, calendars , Posters, brochures, menus, passports, POP supplies, coasters, displays, nameplates, keyboards, cosmetics, watches, lighters and other accessories; stationery, report paper and other stationery; building materials, panels, emblems, keys, cloth, clothing , Footwear, radio, TV, calculator, OA equipment, etc., various sample books, Album, computer graphics output include a medical image output, and the like.

  If the intermediate transfer recording medium of the present invention is used, excellent durability can be imparted to the image formed on the transfer target. Therefore, even when the printed matter having this image is brought into contact with a film such as a soft vinyl chloride film containing a plasticizer over a long period of time, there is no possibility that a part of the image is transferred to the film, The image does not crack for a long time, and the same quality image can be maintained for a long time.

  The present invention will be further clarified by the following examples.

Reference example 1
Preparation of release layer coating liquid Acrylic resin 40 parts by weight Polyester resin 2 parts by weight Methyl ethyl ketone 50 parts by weight Toluene 50 parts by weight Acrylic resin (manufactured by Mitsubishi Rayon Co., Ltd., BR-85) and polyester resin (manufactured by Toyobo Co., Ltd.) Byron 200) was dissolved in methyl ethyl ketone and toluene to prepare a release layer coating solution.

Reference example 2
Preparation of coating solution for plasticizer layer Acrylic copolymer resin 100 parts by weight Methyl ethyl ketone 50 parts by weight Isopropyl alcohol 50 parts by weight As acrylic copolymer resins, the following acrylic copolymer resins A to G were used.
Acrylic copolymer resin A:
Methyl methacrylate-methacrylic acid copolymer resin, SP value = 11.60, Tg = 70 ° C.
Acrylic copolymer resin B:
Methyl methacrylate-methacrylic acid copolymer resin, SP value = 11.57, Tg = 60 ° C.
Acrylic copolymer resin C:
Methyl methacrylate-methacrylic acid-methacrylamide copolymer resin, SP value = 10.88, Tg = 60 ° C.
Acrylic copolymer resin D:
Methyl methacrylate-methacrylic acid-methacrylamide copolymer resin, SP value = 11.31, Tg = 110 ° C.
Acrylic copolymer resin E:
Methyl methacrylate-methacrylic acid copolymer resin, SP value = 11.68, Tg = 80 ° C
Acrylic copolymer resin F:
Methyl methacrylate-methacrylic acid-methacrylamide copolymer resin, SP value = 11.10, Tg = 125 ° C
The acrylic copolymer resin A, B, C, D, E or F was dissolved in methyl ethyl ketone and isopropyl alcohol to prepare a plasticizer layer coating solution A, B, C, D, E or F.

  Solvent-insoluble organic fine particle aqueous dispersion (trade name: Muticle, manufactured by Mitsui Chemicals) 135 parts by weight (solid content) and polyvinyl alcohol (trade name: C-318, manufactured by The Inktec Co., Ltd.) 27 A plasticizer layer coating solution G was prepared by dissolving parts by weight in 27 parts by weight of ethanol and 6 parts by weight of water.

Reference example 3
Preparation of receiving layer coating solution Vinyl chloride-vinyl acetate copolymer 17 parts by weight Amino-modified silicone 0.17 part by weight Epoxy-modified silicone 0.17 part by weight Methyl ethyl ketone 82.6 parts by weight Vinyl chloride-vinyl acetate copolymer ( Union Carbide, VYHD), amino-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KS-343) and epoxy-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KS-393) are dissolved in methyl ethyl ketone, and the receiving layer A coating solution was prepared.

Example 1
A transparent polyethylene terephthalate film (thickness 12 μm) was used as a base film for preparing the intermediate transfer recording medium of the present invention .

  The release layer coating solution prepared in Reference Example 1 was applied to one side of the polyethylene terephthalate film and dried to form a release layer having a thickness of 1.5 μm on the base film.

  Next, the plasticizer layer coating solution A prepared in Reference Example 2 was applied onto the release layer and dried to form a 2.0 μm thick plasticizer layer.

  Next, the receiving layer coating solution prepared in Reference Example 3 was applied onto the plasticizer layer and dried to form a 2.0 μm thick receiving layer. The intermediate transfer recording medium of the present invention A was created.

  An intermediate transfer recording medium B of the present invention was prepared in the same manner as described above except that the plasticizer layer coating solution B was used instead of the plasticizer layer coating solution A.

Comparative Example 1
Preparation of Comparative Intermediate Transfer Recording Medium A comparative intermediate transfer recording medium C was prepared in the same manner as in Example 1 except that the plasticizer layer coating liquid C was used instead of the plasticizer layer coating liquid A. Created.

  A comparative intermediate transfer recording medium D was prepared in the same manner as in Example 1 except that the plasticizer layer coating solution D was used instead of the plasticizer layer coating solution A.

  A comparative intermediate transfer recording medium E was prepared in the same manner as in Example 1 except that the plasticizer layer coating solution E was used instead of the plasticizer layer coating solution A.

  A comparative intermediate transfer recording medium F was prepared in the same manner as in Example 1 except that the plasticizer layer coating solution F was used instead of the plasticizer layer coating solution A.

  A comparative intermediate transfer recording medium G was prepared in the same manner as in Example 1 except that the plasticizer layer coating solution G was used instead of the plasticizer layer coating solution A.

Example 2
Creation of printed matter Using a thermal printer (VDS, card printer CX210) and a thermal transfer sheet (VDS, thermal transfer sheet for card printer CX210) according to each image information of yellow, magenta and cyan obtained by color separation of a face photograph. Then, yellow, magenta and cyan dyes were transferred to the receptor layer of the intermediate transfer recording medium A to form a full-color face photographic image on the receptor layer of the intermediate transfer recording medium A.

  Printing is performed by superimposing the receiving layer of the intermediate transfer recording recording medium A on the transfer target and transferring the image formed on the receiving layer to the transfer target using a thermal printer (VDS, card printer CX210). Article A was produced.

  A printed matter B was produced in the same manner as in Example 1 except that the intermediate transfer recording medium B was used instead of the intermediate transfer recording medium A.

Comparative Example 2
Preparation of Comparative Printed Product Printed product C was produced in the same manner as in Example 1 except that the intermediate transfer recording medium C was used instead of the intermediate transfer recording medium A.

  A printed product D was produced in the same manner as in Example 1 except that the intermediate transfer recording medium D was used instead of the intermediate transfer recording medium A.

  A printed product E was produced in the same manner as in Example 1 except that the intermediate transfer recording medium E was used instead of the intermediate transfer recording medium A.

  A printed product F was produced in the same manner as in Example 1 except that the intermediate transfer recording medium F was used instead of the intermediate transfer recording medium A.

  A printed product G was produced in the same manner as in Example 1 except that the intermediate transfer recording medium G was used instead of the intermediate transfer recording medium A.

Test example 1
Durability Evaluation Test A plasticized soft vinyl chloride sheet (thickness 400 μm, trade name: Altron # 480, manufactured by Mitsubishi Chemical Corporation) is overlaid with the image portions of the prints A to G, and a load of 70.2 g / cm ² . And stored in an environment of 82 ° C. for 32 hours. Then, the deterioration state of the image was observed visually about the printed matter AG.
Observation items:
(a) Transfer of image to plasticized soft vinyl chloride sheet ○ When image transfer to plasticizer soft vinyl chloride sheet is not observed at all, ○, when image transfer is recognized ×, image transfer The case where it was recognized over the whole image was evaluated as xx.
(b) Presence / absence of cracks in the image The case where no cracks were observed in the image was evaluated as ◯, and the case where the cracks in the image were observed throughout the image was evaluated as x.

  The results are shown in Table 1.

その結果、印画物Ａ及び印画物Ｂは、画像の劣化が全く認められず、また画像のひび割れも生じなかった。これに対して、カードＣ〜カードＧは、画像が軟質塩化ビニルシートに転移し、画像の劣化が認められた。画像の劣化は、印画物Ｃ及び印画物Ｇで顕著であった。また、印画物Ｄ〜印画物Ｆは、画像のひび割れも認められた。

As a result, in the printed matter A and the printed matter B, no deterioration of the image was observed, and no cracks occurred in the image. On the other hand, in the cards C to G, the image was transferred to the soft vinyl chloride sheet, and the image was found to be deteriorated. The deterioration of the image was remarkable in the printed matter C and the printed matter G. In addition, cracks in the printed materials D to F were also observed.

FIG. 1 is a cross-sectional view showing an example of the intermediate transfer recording medium of the present invention. FIG. 2 is a cross-sectional view showing another example of the intermediate transfer recording medium of the present invention. FIG. 3 is a sectional view showing another example of the intermediate transfer recording medium of the present invention. FIG. 4 is a cross-sectional view showing an example of a printed product according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Intermediate recording medium 2 Base film 3 Peeling layer 4 Plasticizer layer 5 Receiving layer 6 Back layer 7 Anchor layer 8 Image 9 Transfer object

Claims (3)

An intermediate transfer recording medium that is provided with a release layer, a plasticizer layer, and a receiving layer sequentially on one surface of a base film, and is used for transferring an image formed on the receiving layer surface to a transfer target,
The resin constituting the plasticizer layer is an acrylic copolymer resin containing at least two components of methyl methacrylate, methacrylamide and methacrylic acid ,
An intermediate transfer recording medium in which the acrylic copolymer resin has a solubility parameter value of 11 or more and a glass transition temperature of 60 ° C to 70 ° C. The intermediate transfer recording medium according to claim 1, wherein the acrylic copolymer resin is a methyl methacrylate-methacrylic acid copolymer resin. A print obtained by forming an image on the receiving layer surface of the intermediate transfer recording medium according to claim 1 or 2 by thermal transfer, and transferring the release layer, the plasticizer layer and the receiving layer of the recording medium to a transfer medium. object.

Images