Protective patch ribbon for thermal transfer printers and method for manufacturing the same

Abstract

The present invention relates to a protective patch ribbon for a thermal transfer printer that can directly record an image or target information on a patch-shaped applicator without using a separate laminator and with a conventional retransfer printer, can effectively prevent physical damage to the recorded matter transferred to the recording material, and can prevent forgery of the recorded matter transferred to the recording material. The protective patch ribbon includes a transport film on which rewinding and winding are repeated, and a release body including an adhering layer located on at least one surface of the transport film. The release body includes a structure in which a patch film base material and a primer layer are sequentially laminated on the adhering layer. The structure includes a patch-shaped applicator including a punching region, and an image receiving layer located on the patch-shaped applicator. The shape of the patch transferred to the recording material is defined by the punching region.

Description

Technical Field

[0001] The present invention relates to a protective patch ribbon for a thermal transfer printer and a method for manufacturing the same. More specifically, the present invention relates to a protective patch ribbon for a thermal transfer printer that can protect the recorded matter transferred to a recording material and prevent forgery of the transferred recorded matter, and can perform image printing with excellent quality up to the edge region of the recording material using a conventional retransfer printer, and a method for manufacturing the same.

Background Art

[0002] In order to record information on various plastic cards such as credit cards and transportation IC cards, or identity cards such as resident registration cards and driver's licenses, an image is printed on a recording material such as a plastic card or an identity card.

[0003] Among such printing methods, the direct transfer method of directly printing an image on a recording material has a limit in that the print quality of the edge portion of the recording material deteriorates.

[0004] In order to overcome such a limit, a retransfer method is widely used in which an intermediate transfer medium is printed with a target image and then the coating layer of the intermediate transfer medium is retransferred to a recording material by thermal lamination.

[0005] However, in order to prevent physical damage to the recorded matter retransferred to the recording material, a step of adding a protective patch to the recorded matter transferred to the recording material is essential. Generally, the protective patch is provided in the form of a protective patch ribbon in which a film coated with a heat adhesive layer is laminated on a transport film, and then laminated in one direction and coated on the recorded matter retransferred to the recording material. Thus, in order to attach the protective patch to the recorded matter, a separate printer or laminator is required, which causes a problem of reduced process efficiency.

[0006] Therefore, there is a need for a new protective patch ribbon for thermal transfer printers that can replace conventional protective patches and retransfer intermediate transfer media simultaneously, by providing both image printing and physical protection of printed images using a conventional retransfer printer without the need for a separate laminator, thereby enabling image printing with superior quality. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Republic of Korea Published Patent No. 10-2017-0100364 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] The object of the present invention is to provide a protective patch ribbon for thermal transfer printers that can effectively prevent physical damage to recordings transferred to a recording material using a conventional retransfer printer, without the need for a separate laminator.

[0009] Another object of the present invention is to provide a protective patch ribbon for a thermal transfer printer that can prevent the forgery or alteration of a recording transferred to a recording material.

[0010] Another object of the present invention is to provide a protective patch ribbon for a thermal transfer printer that enables image printing with excellent quality even to the edge region of the recording material.

[0011] Another object of the present invention is to provide a method for manufacturing the protective patch ribbon for thermal transfer printers described above. [Means for solving the problem]

[0012] The protective patch ribbon for a thermal transfer printer provided by the present invention includes a transport film that is repeatedly unwound and wound, a release body including an adhesive layer located on at least one surface of the transport film, and a structure in which a patch film substrate and a primer layer are sequentially laminated on the adhesive layer, the structure including a patch shape imparting body including a perforated region, and an image receiving layer located on the patch shape imparting body, wherein the shape of the patch transferred to the recording material is defined by the perforated region.

[0013] In a protective patch ribbon for a thermal transfer printer according to one embodiment of the present invention, the transport film and the patch film substrate are bonded together by the bonding layer.

[0014] A protective patch ribbon for a thermal transfer printer according to one embodiment of the present invention further includes a release layer located between the image receiving layer and the primer layer.

[0015] A protective patch ribbon for a thermal transfer printer according to one embodiment of the present invention further includes a first buffer portion that extends integrally from the release layer and fills the perforated area.

[0016] In a protective patch ribbon for a thermal transfer printer according to one embodiment of the present invention, the structure includes the release layer, and the end of the perforated region on the release side is embedded inside the transport film.

[0017] In a protective patch ribbon for a thermal transfer printer according to one embodiment of the present invention, the perforated area is tapered with respect to the thickness direction of the protective patch ribbon.

[0018] In a protective patch ribbon for a thermal transfer printer according to one embodiment of the present invention, the protective patch ribbon further includes a second buffer portion that extends integrally from the image receiving layer and fills the perforated area.

[0019] In the protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, the peel strength between the release layer and the layer in contact with the release layer, and the peel strength between the primer layer and the patch film substrate are greater than the peel strength between the transport film and the patch film substrate.

[0020] In the protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, the peel strength between the transport film and the patch film substrate is 4 to 8 gf / 25 mm based on the 90-degree peel strength.

[0021] In the protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, the adhering layer contains any one or more selected from the group consisting of polyester, polyacrylate, polyurethane, polyimide, polybutyral, polyacetal, and silicone resin.

[0022] In the protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, the release layer contains any one or more selected from the group consisting of polyester, polyacrylate, polyamide, cellulose ester, polyurethane, polyvinyl acetate copolymer, polybutyral, polyacetal, and silicone resin.

[0023] In the protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, the thicknesses of the adhering layer and the release layer are independently 0.5 to 5 μm.

[0024] In the protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, the patch film substrate is any one or more selected from the group consisting of stretched polypropylene (OPP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polycarbonate (PC).

[0025] In the protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, the patch film substrate contains an embossed hologram.

[0026] As another aspect, the present invention provides a method for manufacturing a protective patch ribbon for a thermal transfer printer.

[0027] The method for manufacturing a protective patch ribbon for a thermal transfer printer according to the present invention includes: a) a preparation step of a release body for forming an adhesion layer by applying an adhesion layer coating liquid on at least one surface of a transport film in which rewinding and winding are repeated; b) a formation step of a structure located on the release body by laminating a patch film base material on the adhesion layer, pasting the paper by a heat pasting machine, and then forming a primer layer on the opposite surface of the pasted surface of the patch film base material; c) a formation step of a patch shape giver for forming a punching area in the structure through a punching process so that the shape of the patch transferred to the recording material is defined; and d) a step of forming an image receiving layer on the patch shape giver.

[0028] In the method for manufacturing a protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, after the step c), the method further includes a step of applying a release layer coating liquid on the patch shape giver to form a release layer.

[0029] In the method for manufacturing a protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, in the step b), a release layer coating liquid is applied on the primer layer to form a structure including a release layer on the primer layer.

[0030] In the method for manufacturing a protective patch ribbon for a thermal transfer printer according to an embodiment of the present invention, in the punching area formed in the step c), the end portion on the release body side of the punching area is included inside the transport film.

Advantages of the Invention

[0031] The protective patch ribbon for thermal transfer printers of the present invention includes a release body comprising a transport film that is repeatedly unwound and wound, and an adhesive layer located on at least one surface of the transport film, and a structure in which a patch film substrate and a primer layer are sequentially laminated on the adhesive layer, wherein the structure includes a patch shape imparting body including a perforated region and an image receiving layer located on the patch shape imparting body, and the shape of the patch to be transferred to the recording material is defined by the perforated region, so that an image or the information of the desired purpose can be recorded directly on the patch shape imparting body using a conventional retransfer printer without the need for a separate laminator, and the physical damage to the recorded material transferred to the recording material can be effectively prevented, and the forgery or alteration of the recorded material transferred to the recording material can be prevented. [Brief explanation of the drawing]

[0032] [Figure 1] This is a conceptual diagram of a protective patch ribbon according to one embodiment of the present invention. [Figure 2] This is a conceptual diagram of a protective patch ribbon according to another embodiment of the present invention. [Figure 3] This is a conceptual diagram of a protective patch ribbon according to yet another embodiment of the present invention. [Modes for carrying out the invention]

[0033] The protective patch ribbon for thermal transfer printers and its manufacturing method, according to one embodiment of the present invention, will be described in detail below with reference to the attached drawings.

[0034] The drawings presented below are provided as examples to adequately convey the concept of the present invention to those skilled in the art. Therefore, the present invention is not limited to the drawings presented below and can be embodied in other forms, and the drawings presented below may be exaggerated to clarify the concept of the present invention.

[0035] In the technical and scientific terms used herein, unless otherwise defined, they have the meaning that a person with ordinary skill in the art to which this invention pertains would ordinarily understand. In the following description and accompanying drawings, descriptions of known functions and configurations that would obscure the essence of this invention are omitted.

[0036] Furthermore, unless otherwise indicated in the context, the singular form used herein and in the appended claims may also include multiple forms.

[0037] In this specification and the appended claims, terms such as 'includes' or 'has' mean that the features or components described in the specification are present, and unless otherwise specified, do not preclude the possibility of the addition of one or more other features or components.

[0038] The protective patch ribbon for a thermal transfer printer provided by the present invention includes a transport film that is repeatedly unwound and wound, a release body including an adhesive layer located on at least one surface of the transport film, and a structure in which a patch film substrate and a primer layer are sequentially laminated on the adhesive layer, the structure including a patch shape imparting body including a perforated region, and an image receiving layer located on the patch shape imparting body, wherein the shape of the patch transferred to the recording material is defined by the perforated region.

[0039] Conventional retransfer printing methods for printing target information or images (hereinafter referred to as "recorded material") onto a recording material involve printing the recorded material onto an intermediate transfer medium, and then retransferring the coating layer of the printed intermediate transfer medium onto the recording material. However, such methods have poor physical durability for recorded material, and therefore, in order to prevent physical damage to the recorded material after it has been retransferred onto the recording material, a step of applying a protective patch to the transferred recorded material using a laminator is always required.

[0040] In this context, protective patches are also commonly referred to as clear patches, clear patch ribbons, clear patch laminates, clear laminate patches or ribbons, or overlaminate clear.

[0041] Such protective patches are provided in the form of a roll-shaped protective patch ribbon, which consists of a transparent patch that is transferred from the transport film to the recording medium by heat, and a transport film laminated together. However, the thickness of the protective patch is about 2 to 3 times thicker than the thickness of the intermediate transfer medium.

[0042] Due to the difference in thickness between the protective patch and the intermediate transfer medium, laminating a relatively thick protective patch with a retransfer printer that supplies less heat than the laminator used to apply the protective patch may reduce transfer and adhesion to the recording material. This necessitates the use of a separate printer or laminator for applying the protective patch, resulting in reduced process efficiency.

[0043] On the other hand, a protective patch ribbon for a thermal transfer printer according to one embodiment of the present invention includes a transport film that is repeatedly unwound and wound, a release body including an adhesive layer located on at least one surface of the transport film, and a structure in which a patch film substrate and a primer layer are sequentially laminated on the adhesive layer, the structure including a patch shape imparting body including a perforated region and an image receiving layer located on the patch shape imparting body, the shape of the patch to be transferred to the recording material is defined by the perforated region, so that even when using a conventional retransfer printer that supplies less heat than a laminator used to attach protective patches, the patch shape imparting body is peeled off the release body and heat-bonded to the recording material, so that the recorded material can be printed on the recording material with excellent quality and physical damage to the recorded material transferred to the recording material can be effectively prevented.

[0044] The recording material on which the recorded information is transferred can be any substance known in the industry without restriction. For example, the recording material may include, but is not limited to, polyvinyl chloride, polyester, polycarbonate, or ABS (Acrylonitrile butadiene styrene) resin.

[0045] The following is a more detailed explanation, referring to the attached diagrams.

[0046] Figure 1 is a conceptual diagram of a protective patch ribbon 4 according to one embodiment of the present invention.

[0047] As shown in Figure 1, the protective patch ribbon 4 according to one embodiment of the present invention includes a release body 100 which includes an adhesive layer 11 located on one surface of the transport film 10, a patch shape imparting body 200 which includes perforated regions 30 and 31 in which a patch film substrate 20 and a primer layer 21 are sequentially laminated on the adhesive layer 11, and an image receiving layer 23 located on the patch shape imparting body 200.

[0048] Furthermore, the protective patch ribbon 4 includes a plurality of units arranged continuously in a tape-like manner, with the aforementioned peeling body 100, patch shape imparting body 200, and image receiving layer 23 as the unit.

[0049] Here, the punched areas 30 and 31 define the patch shape 2 that will be transferred to the recording material 1.

[0050] Specifically, the release body 100 is peeled off, and the image receiving layer 23 with the recorded material printed on it and the patch shape imparting body 200 are heat-bonded sequentially to the surface of the recording material 1, allowing the recorded material to be transferred to the recording material 1.

[0051] As a specific example, the transport film 10 contained in the release body 100 may be one that is repeatedly unwound and wound up.

[0052] Specifically, unlike conventional methods where the protective patch is attached by lamination in one direction, the protective patch ribbon 4 according to one embodiment of the present invention is equipped with an image receiving layer 23 and is capable of image reception. Here, the image can be completed by returning to the printing start point each time a color consisting of cyan, magenta, yellow, black (key), and silver is printed. That is, in order to receive an image on the image receiving layer 23, which will be described later, the transport film 10 is repeatedly rewound and wound up by a drive roll.

[0053] In one embodiment, the transport film 10 includes sensing marks (not shown) on at least one surface for confirming the printing position. Here, the sensing marks consist of two marks spaced at a fixed interval on at least one surface of a single unit, thereby specifying the range of the printing area, and the sensing marks can be embossed using black ink commonly used in the industry.

[0054] However, if the sensing marks contained in the transport film 10, which is repeatedly rewound and re-winded, come into contact with the image receiving layer 23 during the re-winding process, the physical properties of the black ink are selected according to the physical properties of the image receiving layer 23.

[0055] For example, when the transport film 10 is wound up for printing, if the surface of the image receiving layer 23 that comes into contact with the sensing mark is oil-based, the sensing mark contains water-based black ink; if the surface of the image receiving layer 23 is water-based, the sensing mark contains oil-based black ink.

[0056] For example, the transport film 10 can be made of any material known in the industry without restriction, such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), but is not limited to these.

[0057] As a specific example, the thickness of the transport film 10 is 1 to 50 μm, specifically 10 to 30 μm, but the present invention is not limited by the thickness of the transport film 10.

[0058] In one embodiment, the adhesive layer 11 contained in the release body 100 and located on one surface of the transport film 10 adheres the patch film substrate 20 contained in the patch shape imparting body 200 (described later) to the aforementioned transport film 10. During thermal transfer, the adhesive layer 11 plays a role in adjusting the peel strength between the patch film substrate 20 and the transport film 10 so that the patch shape imparting body 200, including the patch film substrate 20, can be peeled off from the release body 100.

[0059] As a specific example, the bonding layer 11 includes a thermosetting resin, a thermoplastic resin, or a photocurable resin, but it is advantageous if the resin is not sticky or has very little stickiness after curing.

[0060] As described above, the transport film 10 on which the bonding layer 11 is located is repeatedly rewound by the drive roll for image reception on the image receiving layer 23. However, if there is stickiness from the bonding layer 11 on one side of the transport film 10 after the image receiving layer 23 and the patch shape imparter 200 are heat-bonded and the recorded material is transferred to the recording material 1, a load is placed on the drive roll that rewinds and winds the transport film 10. This prevents the printing start point from being accurately reached when printing each color, resulting in the output of a blurry image with out-of-focus colors. Furthermore, if the stickiness is severe, the image receiving layer 23 and the patch shape imparter 200 may not be completely detached from the release body 100.

[0061] As a specific example, the bonding layer 11 includes one or more selected from the group consisting of polyester, polyacrylate, polyurethane, polyimide, polybutyral, polyacetal, and silicone resin.

[0062] As one concrete example, the thickness of the bonding layer 11 is 0.5 to 5 μm, specifically 1 to 4 μm, and more specifically 2 to 3 μm.

[0063] Furthermore, in order to adjust the peel strength between the patch film substrate 20 and the transport film 10 by the bonding layer 11 located on one surface of the transport film 10, one surface of the transport film 10 may be treated with corona or plasma.

[0064] In one embodiment, the patch shape imparting body 200 is a structure in which a patch film substrate 20 and a primer layer 21 are sequentially laminated on an adhesive layer 11 contained in the release body 100, and includes perforated areas 30 and 31.

[0065] Here, the transport film 10 and the patch film substrate 20 are bonded together by the bonding layer 11, and the peel strength between the transport film 10 and the patch film substrate 20 is adjusted by the lamination process conditions. The lamination process conditions will be explained in more detail later in the manufacturing method of protective patch ribbon for thermal transfer printers.

[0066] Furthermore, in order to adjust the peel strength between the patch film substrate 20 and the transport film 10, the laminating surface of the patch film substrate 20 is also treated with corona or plasma, similar to how one surface of the transport film 10 is treated with corona or plasma.

[0067] In one embodiment, the peel strength between the transport film 10 and the patch film substrate 20 is 4 to 9 gf / 25 mm, specifically 5 to 8 gf / 25 mm, and more specifically 6 to 7 gf / 25 mm, based on the 90-degree peel strength.

[0068] By ensuring that the peel strength between the transport film 10 and the patch film substrate 20 satisfies the aforementioned 90-degree peel strength, the desired recording can be transferred to the recording material 1 with excellent quality.

[0069] Specifically, if the peel strength between the transport film 10 and the patch film substrate 20 does not meet the above-mentioned range based on the 90-degree peel strength, the patch film substrate 20 may detach during the formation process of the perforated regions 30, 31 and the image receiving layer 23 included in the patch shape imparting body 200 (described later), or the image receiving layer 23 and the patch shape imparting body 200 may not completely detach from the peeling body 100 during the process of printing the desired recording on the recording material 1. Therefore, it is preferable that the peel strength between the transport film 10 and the patch film substrate 20 meets the above-mentioned range based on the 90-degree peel strength.

[0070] When printing the desired recording onto the recording material 1, the patch film substrate 20 contained in the patch shape imparter 200 is peeled off from the release body 100 and positioned on the outermost surface of the patch shape 2 area contained in the recording material 1, effectively preventing physical damage to the recording.

[0071] In one embodiment, the patch film substrate 20 is one or more selected from the group consisting of stretched polypropylene (OPP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polycarbonate (PC).

[0072] As a specific example, the thickness of the patch film substrate 20 is 5 to 40 μm, specifically 10 to 30 μm.

[0073] By ensuring that the thickness of the patch film substrate 20 satisfies the above-mentioned range, the recorded material printed on the recording material 1 can be protected from the external environment, and the durability of the recorded material can be significantly improved.

[0074] As an example, the patch film substrate 20 includes an embossed hologram. The inclusion of an embossed hologram in the patch film substrate 20 improves the security of the recorded material transferred to the recording material 1.

[0075] In one embodiment, the patch shape imparting body 200 includes a structure in which a primer layer 21 is located on the opposing surface of the patch film substrate 20 that is bonded by the bonding layer 11, and which has perforation regions 30, 31.

[0076] Here, the perforated regions 30 and 31 are regions corresponding to regions 3 other than the patch-shaped regions 2 included in the material to be recorded 1, and mean regions from which a part of the structure in which the patch film substrate 20 and the primer layer 21 are sequentially laminated has been removed so as to correspond to the entire region 3 other than the patch-shaped regions 2 included in the material to be recorded 1.

[0077] As a specific example, the primer layer 21 included in the patch shape imparter 200 and located on the patch film substrate 20 plays a role in improving the adhesion between the patch film substrate 20 and the image receiving layer 23, which will be described later, located on either side of the primer layer 21.

[0078] Here, the peel strength between the patch film substrate 20 and the image receiving layer 23, which are bonded by the primer layer 21, is even greater than the peel strength between the transport film 10 and the patch film substrate 20 described above.

[0079] The primer layer 21 can be any substance known in the industry that can be positioned on the patch film substrate 20 to improve adhesion, and is not limited to such substances. However, non-limiting examples include acrylic resins, urethane resins, amide resins, epoxy resins, ionomer resins, rubber-based resins, and the like.

[0080] Here, the thickness of the primer layer 21 is 0.1 to 5 μm, specifically 1 to 3 μm.

[0081] In one embodiment, the image-receiving layer 23 having an image-receiving function is located on the patch-shape-applying body 200 and is adhered to the patch-shaped region 2 contained in the recording material 1. Therefore, the image-receiving layer 23 needs to have both an image-receiving function and an adhesion function to the recording material 1.

[0082] Specifically, the image receiving layer 23 can be used without limitation as long as it is a material that can accommodate sublimation dyes or is printable from a color layer melted from a pigment transfer type thermal transfer ribbon. However, in order to improve adhesion to the recording material 1, it includes one or more selected from the group consisting of vinyl chloride homopolymer, vinyl chloride vinyl acetate copolymer, and polyurethane resin.

[0083] Furthermore, the image receiving layer 23 may optionally further contain first additives known in the industry, such as silicone plasticizers, mold release agents, defoamers, leveling agents, polymer waxes, and antistatic agents.

[0084] For example, the thickness of the image receiving layer 23 is 0.5 to 5 μm, specifically 1 to 4 μm, and more specifically 1 to 3 μm.

[0085] In order to perform both the image receiving function and the adhesion function with the recording material 1 simultaneously, it is preferable that the thickness of the image receiving layer 23 satisfies the above-mentioned range.

[0086] Furthermore, the protective patch ribbon 4 further includes a buffer portion (not shown) that extends integrally from the image-receiving layer 23 and fills the perforated areas 30 and 31 contained in the patch-shape-granting body 200 described above. Here, the buffer portion extends integrally from the image-receiving layer 23 and is made of the same material as the material contained in the image-receiving layer 23.

[0087] In one embodiment, the protective patch ribbon 4 further includes a release layer located between the image receiving layer 23 and the primer layer 21.

[0088] Figures 2 and 3 are conceptual diagrams showing a protective patch ribbon 4 including a release layer 22 according to another embodiment of the present invention, respectively.

[0089] First, referring to Figure 2, the protective patch ribbon 4 includes a release body 100 which includes an adhesive layer 11 located on one surface of the transport film 10, a patch shape imparting body 200 which includes a perforated area (not shown) in which a patch film substrate 20 and a primer layer 21 are sequentially laminated on the adhesive layer 11, a release layer 22 located on the patch shape imparting body 200, and an image receiving layer 23 located on the release layer 22.

[0090] Here, the protective patch ribbon 4 further includes a first buffer portion 300 that extends integrally from the release layer 22 and fills the perforated area.

[0091] Here, the release body 100, which includes an adhesive layer 11 located on one surface of the transport film 10, the patch shape imparting body 200, which includes a perforated area (not shown), and the image receiving layer 23 are the same as or similar to those described above, so a detailed explanation is omitted.

[0092] The protective patch ribbon 4 further includes a release layer located on the patch shape imparting body 200 and a first buffer portion 300 that extends integrally from the release layer 22 and fills the perforated area, thereby improving the print quality of the recording printed in areas 3 other than the patch shape area 2 contained in the recording material 1.

[0093] As a specific example, the first buffer section 300 extends integrally from the release layer 22 and is made of the same material as the material contained in the release layer 22.

[0094] Since the first buffer section 300 extends integrally from the release layer 22 and is made of the same material as the material contained in the release layer 22, the print quality of the recorded material can be improved, not only at the edges of the patch-shaped regions 2 contained in the recording material 1, but also at the edges of the recording material 1.

[0095] In one embodiment, the peel strength between the release layer 22 and the layer in contact with the release layer 22 (image receiving layer and primer layer 21), and the peel strength between the primer layer 21 and the patch film substrate 20 are even greater than the peel strength between the transport film and the patch film substrate described above.

[0096] By satisfying the above conditions, the patch film substrate 20 is peeled off from the release body 100, which includes the adhesive layer 11 located on one surface of the transport film 10, and the image receiving layer 23, release layer 22, primer layer 21, and patch film substrate 20 on which the recorded material has been transferred are sequentially re-transferred to correspond to the patch-shaped region 2 contained in the recording material 1.

[0097] In this process, the first buffer section 300, which extends integrally from the image receiving layer 23 and the release layer 22 onto which the recording material has been transferred, is sequentially re-transferred to the areas 3 other than the patch-shaped area 2 included in the recording material 1.

[0098] As a specific example, the release layer 22 located on the patch shape imparter 200, that is, between the image receiving layer 23 and the primer layer 21, can be any polymer resin whose glass transition temperature and molecular weight can be adjusted using a cold blending process, but as an advantageous example, the release layer 22 includes one or more selected from the group consisting of polyester, polyacrylate, polyamide, cellulose ester, polyurethane, polyvinyl acetate copolymer, polybutyral, polyacetal, and silicone resin.

[0099] For example, to improve transparency and scratch resistance, the release layer 22 may contain polyester and acrylic resins.

[0100] Furthermore, the release layer 22 may optionally further include a second additive such as an antifoaming agent, leveling agent, polymer wax, or UV-blocking agent known in the industry.

[0101] In one example, the thicknesses of the bonding layer 11 and the release layer 22 are 0.5 to 5 μm, independently of each other.

[0102] Here, the thickness of the bonding layer 11 may be the same as described above, and the thickness of the release layer 22 is 0.5 to 5 μm, specifically 1 to 4 μm, and more specifically 2 to 3 μm. By satisfying the above range for the thickness of the release layer 22, it is possible to improve the print quality of the recording that is transferred not only to the edges of the patch-shaped region 2 contained in the recording material 1, but also to the edge region of the recording material 1.

[0103] Furthermore, referring to Figure 3, the protective patch ribbon 4 includes a release body 100 which includes an adhesive layer 11 located on one surface of the transport film 10, a patch shape imparting body 210 which includes a perforated area (not shown) in which a patch film substrate 20, a primer layer 21, and a release layer 22 are sequentially laminated on the adhesive layer 11, and an image receiving layer 23 located on the patch shape imparting body 210.

[0104] Here, the protective patch ribbon 4 further includes a second buffer portion 310 that extends integrally from the image receiving layer 23 and fills the perforated area.

[0105] Here, the delamination body 100, which includes the bonding layer 11 located on one surface of the transport film 10, and the image receiving layer 23 are identical or similar to those described above, so a detailed explanation is omitted.

[0106] The protective patch ribbon 4 includes a patch shape imparting body 210 in which a patch film substrate 20, a primer layer 21, and a release layer 22 are sequentially laminated on an adhesive layer 11, including a perforated area (not shown), and an image receiving layer 23 located on the patch shape imparting body 210. Furthermore, by including a second buffer portion 310 that extends integrally from the image receiving layer 23 and fills the perforated area, the print quality of the recording material printed on the area 3 other than the patch shape area 2 contained in the recording material 1 can be further improved.

[0107] Here, the perforated region refers to a region where a part of a structure in which a patch film substrate 20, a primer layer 21, and a release layer 22 are sequentially laminated is removed so as to correspond to the edge surface of the patch-shaped region 2 contained in the recording material 1. The second buffer portion 310, which extends integrally from the image receiving layer 23 and fills the perforated region, is made of the same material as the material contained in the image receiving layer 23. Since the material contained in the image receiving layer 23 is the same as or similar to the one described above, a detailed explanation is omitted.

[0108] Specifically, the structure included in the patch shape imparting body 210 includes a release layer 22, and the end of the perforated area included in the structure on the release side is incorporated into the transport film 10.

[0109] As a specific example, the end of the perforated area on the peeling side is embedded to a thickness of approximately 0.2 to 0.8 T, more specifically 0.3 to 0.6 T, and more specifically 0.4 to 0.5 T, relative to the overall thickness T of the transport film 10.

[0110] As described above, the end of the perforated area on the release side is incorporated into the transport film 10, satisfying the range, and the perforated area is filled with a second buffer portion 310 made of the same material as the material contained in the image receiving layer 23. However, since the second buffer portion 310 is an integral extension from the image receiving layer 23, the structural stability of the protective patch ribbon 4 is improved, and there is an advantage that the recorded material can be transferred to the recording material 1 without damage when printing the recorded material.

[0111] Furthermore, the image receiving layer 23 is located on a patch shape imparting body 210 that includes a perforated area, and the perforated area is filled with a second buffer portion 310 that extends integrally from the image receiving layer 23. As a result, the print quality of the recording printed on the area 3 other than the patch shape area 2 included in the recording material 1 is further improved.

[0112] In one embodiment, the perforated area tapers (becomes narrower) with respect to the thickness direction of the protective patch ribbon.

[0113] In detail, the shape of the perforated area is tapered, with the width of the end on the delamination side of the perforated area being narrower than the width of the end on the other side. Here, the end on the delamination side of the perforated area is closed at the point where it touches the center line of the perforated area, and the center line is positioned to coincide with the edge line of the patch-shaped area 2 contained in the recording material 1.

[0114] More specifically, the shape of the drilling area includes an outer boundary line K of the drilling area, which is symmetrical on both sides with respect to a center line L located at the center of the drilling area.

[0115] As a specific example, the angle between L and K at the point where the end of the drilled area on the delamination side touches the center line L is between 5 and 45 degrees, more specifically between 10 and 40 degrees, and more specifically between 20 and 30 degrees.

[0116] If the angle between the center line L and the outer boundary line K of the perforated area is less than 5 degrees, even if a second buffer section 310 that extends integrally from the image receiving layer 23 and fills the perforated area is included, there is a limit to how much the structural stability of the protective patch ribbon 4 can be improved. If the angle between L and K exceeds 45 degrees, the structural stability of the protective patch ribbon 4 can be improved, but there is a limit to how much the print quality of the recording printed in areas 3 other than the patch-shaped area 2 included in the recording material 1 can be improved. Therefore, it is advantageous for the angle between the center line L and the outer boundary line K of the perforated area to satisfy the aforementioned range.

[0117] Furthermore, when the angle between the center line L and the outer boundary line K of the perforated area is in the range of 20 to 30 degrees, the structural stability of the protective patch ribbon 4 can be improved, and there is an advantage in that the high-quality printed recordings in areas 3 other than the patch-shaped area 2 included in the recording material 1 can be protected from physical damage.

[0118] The present invention provides a manufacturing method for producing the protective patch ribbon for thermal transfer printers described above.

[0119] The present invention provides a method for manufacturing a protective patch ribbon for a thermal transfer printer, comprising: a) a preparation step of a release body in which an adhesive layer coating liquid is applied to at least one surface of a transport film that is repeatedly unwound and wound, thereby forming an adhesive layer; b) a formation step of a structure located on the release body, in which a patch film substrate is laminated onto the adhesive layer, and after lamination using a thermal lamination machine, a primer layer is formed on the surface opposite the laminated surface of the patch film substrate; c) a formation step of a patch shape imparter in which a perforated region is formed in the structure through a punching process so as to define the shape of the patch to be transferred to the recording material; and d) a step of forming an image receiving layer on the patch shape imparter.

[0120] The following describes in detail, step by step, the manufacturing method for protective patch ribbons for thermal transfer printers.

[0121] First, an adhesive coating liquid is applied to at least one surface of the transport film that is repeatedly unwound and wound up to form an adhesive layer and prepare the release body.

[0122] In one specific example, the bonding layer coating liquid is a mixture of a mixed resin containing an acrylic resin and a polyester, or a reactive resin containing a modified acrylic resin and a curing agent, mixed with a solvent.

[0123] As a specific example, the weight ratio of acrylic resin to polyester in the mixed resin is 1:0.01 to 0.2, specifically 1:0.05 to 0.1.

[0124] The weight ratio of modified acrylic resin to curing agent in the reactive resin is 1:0.1 to 0.5, specifically 0.1 to 0.3. Here, the curing agent includes isocyanate-based curing agents.

[0125] By including a mixed resin or reactive resin satisfying the aforementioned weight ratio in the bonding layer coating liquid, when printing using a conventional retransfer printer, the patch film substrate contained in the patch shape imparter formed in the patch shape imparter formation process described later can be smoothly peeled off from the release agent, allowing the desired recording to be transferred to the recording material with excellent quality. In other words, the peel strength between the patch film substrate and the transport film can be adjusted, improving print quality.

[0126] For example, the solvent is included in the bonding layer coating solution at a concentration of 60-90% by weight, specifically 70-80% by weight, based on the total weight of the bonding layer coating solution.

[0127] Here, the solvent is a single solvent or a mixture of two or more solvents selected from the group consisting of methyl ethyl ketone, dichloromethane, chloroform, ethyl acetate, isopropyl acetate, isobutyl acetate, xylene, and toluene.

[0128] The aforementioned bonding layer coating liquid can be applied to at least one surface of the transport film to form a bonding layer, and the application method is not limited to any method known in the industry. Non-limiting examples include spray coating, gravure coating, microgravure coating, bar coating, slot die coating, and roll coating, but the present invention is not limited by the application method.

[0129] After applying the bonding layer coating liquid, a drying process can be carried out immediately. This drying process can be performed at a temperature of 80-120°C, specifically 100-120°C, for 1-3 minutes. After the drying process is complete, a post-curing process is performed for 12-30 hours at a temperature of 60-80°C, depending on the type of bonding layer coating liquid.

[0130] By performing a post-curing process after the drying process, the patch film substrate contained in the patch-shape imparting body formed after the lamination process described later can be smoothly peeled off from the release body.

[0131] Next, after laminating the patch film substrate onto the bonding layer, the sheets are bonded using a hot laminating machine, and a primer layer is formed on the opposite surface of the bonded patch film substrate, thereby forming a structure located on the release body.

[0132] Here, lamination using a thermal laminating machine is performed under the following conditions: a temperature of 135-145°C and a transfer speed of 1-15 m / min, specifically 8-12 m / min; or a temperature of 145.1-155°C and a transfer speed of 1-9 m / min, specifically 3-7 m / min.

[0133] Under the aforementioned conditions, the peel strength between the patch film substrate, which is laminated with an adhesive layer in between, and the transport film is adjusted using a thermal laminating machine, and when printing with a retransfer printer, the patch film substrate contained in the patch shape imparter formed in the patch shape imparter formation stage described later can be smoothly peeled off from the peeler.

[0134] If the bonding conditions of the thermal bonding machine are not met, when printing with a retransfer printer, the patch film substrate may not be completely peeled off from the release body, or only the primer layer contained in the patch shape imparter (described later) or the image-receiving layer located on the patch shape imparter may be partially peeled off, potentially resulting in a decrease in print quality. Furthermore, since the recorded material transferred to the recording medium cannot be protected from the external environment, it is preferable that the bonding conditions of the thermal bonding machine satisfy the conditions described above.

[0135] After bonding the patch film substrate and the transport film through a thermal bonding machine, a primer layer coating liquid is applied to the opposing surface of the bonded patch film substrate to form a structure located on the aforementioned release body. In other words, the structure is a laminated structure in which the primer layer is located on the opposing surface of the bonded patch film substrate.

[0136] Here, the primer layer can be formed by applying and drying the primer layer coating liquid, and the application and drying method is the same as or similar to the application and drying method for the bonding layer coating liquid described above.

[0137] As an example, the primer layer coating liquid contains a modified acrylic resin, a curing agent, and a solvent, and the curing agent and solvent contained in the primer layer coating liquid are the same as or similar to the curing agent and solvent contained in the aforementioned bonding layer.

[0138] As a specific example, the weight ratio of modified acrylic resin to hardener contained in the primer layer coating liquid is 1:0.01 to 0.095, specifically 0.05 to 0.09.

[0139] By ensuring that the weight ratio of modified acrylic resin to curing agent contained in the primer layer coating liquid satisfies the aforementioned range, the peel strength between the primer layer and the patch film substrate becomes even greater than the peel strength between the patch film substrate, which is laminated with an adhesive layer in between, and the transport film. When printing using a retransfer printer, the patch film substrate contained in the patch shape imparter formed in the patch shape imparter formation stage described later can be smoothly separated from the release agent, thereby improving print quality.

[0140] Next, a punching process is used to form perforated regions in the structure, thereby creating a patch-shape imparting body, so that the shape of the patch to be transferred to the recording material is defined.

[0141] Here, the punched area refers to the area where a portion of the structure, in which the film substrate and primer layer are sequentially laminated, is removed through the punching process, corresponding to the entire area other than the desired patch shape area.

[0142] The punching process is not limited to methods known in the industry, but as an example, the punching process can be carried out using a rotary die-cutting machine.

[0143] Next, an image-receiving layer is formed on a patch-shaped material in which perforated regions are formed within the structure.

[0144] The image receiving layer can be formed by applying and drying an image receiving layer coating solution, and the application and drying method is the same as or similar to the application and drying method for the bonding layer coating solution described above.

[0145] As a specific example, the image receiving layer coating solution contains one or more solvents selected from the group consisting of vinyl chloride homopolymer, vinyl chloride vinyl acetate copolymer, and polyurethane resin.

[0146] As a specific example, the image receiving layer coating solution contains vinyl chloride vinyl acetate copolymer in an amount of 15-40% by weight, specifically 20-30% by weight, based on the total weight of the image receiving layer coating solution, where the solvent is the same as or similar to that described above.

[0147] As an advantageous example, the process may further include the step of applying a release layer coating liquid onto the patch shape imparter to form a release layer before forming the image receiving layer, i.e., after forming the patch shape imparter.

[0148] By applying a release layer coating liquid to a patch-shaped body containing perforated areas in the aforementioned structure to form a release layer, the release layer coating liquid is also applied to the perforated areas, filling them. This has the advantage of improving the print quality of the recorded material printed in areas other than the patch-shaped areas contained in the recording material.

[0149] As a specific example, the release layer coating liquid may contain an acrylic resin, polyester, and a solvent.

[0150] As a specific example, the weight ratio of acrylic resin to polyester in the release layer coating liquid is 1:0.1 to 0.3, specifically 1:0.1 to 0.2.

[0151] Here, the solvent is the same as or similar to that described above, and is composed of 60-90% by weight, specifically 70-80% by weight, based on the total weight of the release layer coating liquid.

[0152] As a more advantageous example, the aforementioned release layer coating liquid can be applied to a primer layer to form a structure containing the release layer on the primer layer, and then, through a punching process, perforated regions can be formed in the structure to define the shape of the patch to be transferred to the recording material, thereby forming a patch shape imparting body.

[0153] In this case, the perforated area is such that the end of the perforated area on the release side is embedded inside the transport film contained within the release body.

[0154] In detail, in the punched area formed through the punching process, the width of the end of the punched area on the release side is tapered compared to the width of the end on the other side, and the end of the punched area on the release side is closed at the point where it touches the center line of the punched area. Here, the punching process is carried out such that the end of the punched area on the release side, which is closed, is incorporated by 0.2 to 0.8 T, specifically 0.3 to 0.6 T, and more specifically 0.4 to 0.5 T, based on the overall thickness T of the transport film.

[0155] Since the punched area formed by this punching process is identical or similar to the punched area shown in Figure 3 above, a detailed explanation will be omitted.

[0156] As described above, when a structure in which a patch film substrate, a primer layer, and a release layer are sequentially laminated is applied to a patch shape imparting body including the tapered perforated region, the image-receiving layer coating liquid is applied to form the image-receiving layer. As a result, the tapered perforated region is also coated and filled with the image-receiving layer coating liquid, which further improves the print quality of the recording printed on areas other than the patch shape region contained in the recording material.

[0157] The protective patch ribbon for thermal transfer printers and the method for manufacturing the same according to the present invention will be described in detail below through examples. However, the following examples are merely references to illustrate the present invention in detail, and the present invention is not limited thereto and can be embodied in various forms.

[0158] Furthermore, unless otherwise defined, all technical and scientific terms have the same meaning as those generally understood by a person of ordinary skill in the art to which the present invention pertains. The terms used herein are for the effective description of specific embodiments and do not limit the present invention. Also, unless otherwise specified in the specification, units for additives are in weight percent.

[0159] (Manufacturing Example 1) Manufacturing of the first bonding layer coating liquid A first bonding layer coating solution was prepared by mixing 2% by weight of amorphous polyester (VYLON 600, Toyobo), 21% by weight of acrylic resin (BR-83, Mitsubishi Chemical), 38.5% by weight of methyl ethyl ketone, and 38.5% by weight of toluene.

[0160] (Manufacturing Example 2) Manufacturing of the second bonding layer coating liquid A second bonding layer coating solution was prepared by mixing 5% by weight of amorphous polyester (VYLON 600, Toyobo), 18% by weight of acrylic resin (BR-83, Mitsubishi Chemical), 38.5% by weight of methyl ethyl ketone, and 38.5% by weight of toluene.

[0161] (Manufacturing Example 3) Manufacturing of the third bonding layer coating liquid A third bonding layer coating solution was prepared by mixing 19.3% by weight of modified acrylic resin (hydroxyl value 27 mg / KOH), 2.5% by weight of polyfunctional isocyanate (TKA-100, Asahi Kasei), 39.1% by weight of toluene, 23.1% by weight of methyl ethyl ketone, and 16% by weight of ethyl acetate.

[0162] (Manufacturing Example 4) Manufacturing of the coating liquid for the fourth bonding layer A coating solution for the fourth bonding layer was prepared by mixing 21.5% by weight of modified acrylic resin (hydroxyl value 27 mg / KOH), 1% by weight of polyfunctional isocyanate (TKA-100, Asahi Kasei), 38.8% by weight of toluene, 20.7% by weight of methyl ethyl ketone, and 18% by weight of ethyl acetate.

[0163] (Manufacturing Example 5) Manufacturing of Primer Layer Coating Solution A primer layer coating solution was prepared by mixing 20.2% by weight of modified acrylic resin (hydroxyl value 27 mg / KOH, Tg 60 degrees), 1.9% by weight of polyfunctional isocyanate (TKA-100, Asahi Kasei), 39% by weight of toluene, 22% by weight of methyl ethyl ketone, and 16.9% by weight of ethyl acetate.

[0164] (Manufacturing Example 6) Manufacturing of the first release layer coating liquid A first release layer coating liquid was prepared by mixing 3% by weight of amorphous polyester (VYLON 600, Toyobo), 21% by weight of acrylic resin (BR-83, Mitsubishi Chemical), 38.5% by weight of methyl ethyl ketone, and 38.5% by weight of toluene.

[0165] (Manufacturing Example 7) Manufacturing of the second release layer coating liquid A second release layer coating solution was prepared by mixing 6% by weight of amorphous polyester (VYLON 600, Toyobo), 17% by weight of acrylic resin (BR-83, Mitsubishi Chemical), 38.5% by weight of methyl ethyl ketone, and 38.5% by weight of toluene.

[0166] (Manufacturing Example 8) Manufacturing of Image Receiver Coating Solution A vinyl chloride-vinyl acetate copolymer resin SOLBIN CNL (90 wt% vinyl chloride, 10 wt% vinyl acetate, Nisshin Chemical Co., Ltd.) 25 wt%, silicone additive (KF-410, Shin-Etsu Chemical Co., Ltd.) 0.1 wt%, and methyl ethyl ketone 74.8 wt% were mixed to prepare a coating solution for the image receiving layer.

[0167] (Example 1) A polyethylene terephthalate film with a thickness of 19 μm was used as the substrate for the transport film. A first bonding layer coating solution was applied to one surface of this substrate to a thickness of 2 μm using the microgravure method to form a bonding layer, and a release body was prepared.

[0168] As a base material for the patch film, one side of a 16 μm thick polyethylene terephthalate film that had been corona-treated on both sides was laminated with the bonding layer side of the aforementioned 19 μm thick transport film, and then laminated using a hot laminating machine under conditions of a temperature of 150°C and a moving speed of 5 m / min.

[0169] A primer layer coating solution was applied to the opposing surface of the laminated patch film substrate using the microgravure method to form a 1 μm thick primer layer and fabricate a structure.

[0170] A portion of the structure manufactured by the punching process using a rotary die-cutting machine is removed, but the entire area other than the desired patch shape is removed, and the resulting perforated area is used to form a patch shape that is smaller than the CR80 (86 x 54 mm) standard.

[0171] Subsequently, a 2 μm thick image-receiving layer was formed on the created patch-shaped material by microgravure coating to produce a protective patch ribbon for thermal transfer printers.

[0172] (Example 2) The procedure was carried out in the same manner as in Example 1, except that the first release layer coating solution and the image receiving layer coating solution were sequentially coated onto the formed patch-shaped material using the microgravure method to form a release layer and an image receiving layer with thicknesses of 1.1 μm and 2 μm, respectively.

[0173] (Example 3) The procedure was the same as in Example 1, except that after forming the primer layer, a first release layer coating liquid was applied to the primer layer to form a release layer with a thickness of 2.5 μm and to manufacture the structure.

[0174] Subsequently, a portion of the structure manufactured to produce patch shapes smaller than the CR80 (86 x 4 mm) standard is removed by a punching process using a rotary die-cutting machine, but a patch-shaped material is formed that includes a tapered punched area where the area gradually narrows at the bottom. Here, the end of the punched area on the release side is positioned in a closed form along the center line of the punched area, so that the edge of the patch shape coincides with the center line of the punched area, and the end of the punched area on the release side is embedded by a thickness of 40% based on the overall thickness of the transport film.

[0175] Furthermore, the outer boundary of the drilling area is positioned so that it is symmetrical on both sides with respect to the center line. In this case, it was confirmed that the angle between the center line and the outer boundary at the closing point of the drilling area is 25 degrees.

[0176] Next, an image-receiving layer coating solution was applied to the formed patch-shaped material using a microgravure method to create a 2 μm thick image-receiving layer, thereby manufacturing a protective patch ribbon for a thermal transfer printer.

[0177] (Example 4) The procedure was the same as in Example 3, except that a 3 μm thick adhesive layer was formed using a third adhesive layer coating solution, and then the patch film substrate and the transport film were laminated with the adhesive layer in between using a hot laminating machine at a temperature of 140°C and a moving speed of 10 m / min.

[0178] (Example 5) The procedure was the same as in Example 2, except that a 3 μm thick adhesive layer was formed using a third adhesive layer coating solution, and then the patch film substrate and the transport film were laminated with the adhesive layer in between using a hot laminating machine at a temperature of 140°C and a moving speed of 10 m / min.

[0179] (Example 6) The procedure was the same as in Example 3, except that the end of the perforated area on the release side was embedded to a thickness of 20% relative to the overall thickness of the transport film.

[0180] (Example 7) The procedure was the same as in Example 3, except that the hole-punching area was formed so that the angle between the center line and the outer boundary line at the closing point of the hole-punching area was 60 degrees.

[0181] (Example 8) The procedure was the same as in Example 3, except that a 16 μm thick embossed hologram film, corona-treated on both sides, was used as the base material for the patch film.

[0182] (Comparative Example 1) The procedure was the same as in Example 3, except that the bonding layer was formed by applying the second bonding layer coating solution.

[0183] (Comparative Example 2) The procedure was the same as in Example 4, except that the bonding layer was formed by applying the fourth bonding layer coating solution.

[0184] (Comparative Example 3) The procedure was the same as in Example 4, except that the patch film substrate and transport film were laminated with an adhesive layer in between using a hot laminating machine at a temperature of 150°C and a moving speed of 10 m / min.

[0185] (Comparative Example 4) The procedure was the same as in Example 2, except that the release layer was formed by applying a second release layer coating solution.

[0186] (Comparative Example 5) The procedure was the same as in Example 3, except that the punching process for forming the patch-shaped body was performed after the image-receiving layer was formed.

[0187] (Comparative Example 6) The procedure was the same as in Example 3, except that the punching process was omitted, i.e., no punched area was formed.

[0188] (Example of experiment) For each protective patch ribbon for thermal transfer printers, the 90-degree peel strength between the patch film substrate and the transport film, which were laminated with an adhesive layer in between, was measured via a thermal laminating machine, and the results are shown in Table 1.

[0189] Furthermore, to verify the print quality using protective patch ribbons for each thermal transfer printer, a printing process was performed on polyvinyl chloride cards (CR80 standard) as the recording material using a retransfer printer (DC-7600, DASCOM). During this process, printing was carried out under conditions of a temperature of 202°C and a speed of 20 mm / sec.

[0190] Here, print quality was evaluated by checking the adhesion between the patch film substrate and the recording material, and the transferability of the edges of the recording material. The evaluation criteria are described below.

[0191] (Evaluation of adhesion between patch film substrate and recording material) The printing condition of the recording material after the printing process was observed, and after one hour, the patch film substrate was forcibly peeled off from the recording material to check the extent of tearing.

[0192] O: Part of the patch film substrate is torn. NG: The patch film base material peels off without tearing. X: Either it is not printed, or the patch film substrate is not transferred to the recording material, and only the image receiving layer, or the release layer and image receiving layer are transferred.

[0193] (Transferability of the edges) The printed state was observed on the edges of the recording material that underwent the printing process, i.e., on areas other than the patch shape.

[0194] GOOD: The perforation area is not visible, and the edges can be printed. PASS: Perforation area is visible, but the edges are printable. NG: Perforated area is visible, resulting in incomplete printing of the edges.

[0195] [Table 1]

[0196] Referring to the results in Table 1, it was confirmed that when printing using a conventional retransfer printer, the print quality was best when using the protective patch ribbons of Examples 3 and 4. On the other hand, it was confirmed that even when a perforation area similar to that of Example 3 was included, the print quality differed depending on the shape of the perforation area.

[0197] In contrast, in Comparative Example 6, which did not include a perforated area, the patch film substrate tore during the printing process, and it was observed that both the adhesion between the patch film substrate and the recording material and the edge transfer properties were the worst. It was also observed that when the 90-degree peel strength between the laminated patch film substrate and the transport film exceeded 9 gf / 25 mm, the adhesive properties between the patch film substrate and the recording material were poor.

[0198] Furthermore, we confirmed that the execution order of the punching process to form the perforated area affects the transferability of the edges.

[0199] As described above, the present invention has been explained through specified features and limited embodiments, which are provided to aid in a more general understanding of the invention. The present invention is not limited to the above embodiments, and various modifications and variations can be made from these descriptions by those with ordinary skill in the art to which the invention pertains.

[0200] Therefore, the concept of the present invention should not be limited to the embodiments described herein, and it can be said that all things equivalent to or with equivalent variations of the claims described below, as well as the claims described below, fall within the scope of the concept of the present invention.

Claims

1. A release body comprising a transport film that is repeatedly unwound and wound, and an adhesive layer located on at least one surface of the transport film, The structure includes a patch shape imparting body including a perforated region, in which at least a patch film substrate and a primer layer are sequentially laminated on the aforementioned bonding layer, and the structure includes a patch shape imparting body including a perforated region, A receiving layer located on the aforementioned patch shape imparting body, It includes a release layer located between the image receiving layer and the primer layer, The shape of the patch to be transferred to the recording material is defined by the perforated area. It further includes a buffer portion that extends integrally from the release layer or image receiving layer and fills the perforated area, The transport film and the patch film substrate are bonded together by the bonding layer. A protective patch ribbon for a thermal transfer printer, characterized in that the peel strength between the release layer and the layer in contact with the release layer, and the peel strength between the primer layer and the patch film substrate are greater than the peel strength between the transport film and the patch film substrate.

2. The protective patch ribbon for a thermal transfer printer according to claim 1, characterized in that the structure includes the release layer, and the end of the perforated region on the release side is incorporated into the transport film.

3. The protective patch ribbon for a thermal transfer printer according to claim 2, characterized in that the perforated area tapers with respect to the thickness direction of the protective patch ribbon.

4. The protective patch ribbon for a thermal transfer printer according to claim 1, characterized in that the peel strength between the transport film and the patch film substrate is 4 to 8 gf / 25 mm based on the 90-degree peel strength.

5. The protective patch ribbon for a thermal transfer printer according to claim 1, characterized in that the bonding layer comprises one or more selected from the group consisting of polyester, polyacrylate, polyurethane, polyimide, polybutyral, polyacetal, and silicone resin.

6. The protective patch ribbon for a thermal transfer printer according to claim 1, characterized in that the release layer comprises one or more selected from the group consisting of polyester, polyacrylate, polyamide, cellulose ester, polyurethane, polyvinyl acetate copolymer, polybutyral, polyacetal, and silicone resin.

7. The protective patch ribbon for a thermal transfer printer according to claim 1, characterized in that the thickness of the bonding layer and the release layer are 0.5 to 5 μm, independently of each other.

8. The protective patch ribbon for a thermal transfer printer according to claim 1, characterized in that the patch film substrate is one or more selected from the group consisting of stretched polypropylene (OPP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polycarbonate (PC).

9. The protective patch ribbon for a thermal transfer printer according to claim 8, characterized in that the patch film substrate includes an embossed hologram.

10. a) A preparation step for a release body in which an adhesive layer coating liquid is applied to at least one surface of a transport film that is repeatedly unwound and wound, to form an adhesive layer, b) Laminating a patch film substrate onto the bonding layer and bonding it using a hot bonding machine, then forming a primer layer on the opposite surface of the bonded surface of the patch film substrate, and the formation step of the structure located on the release body, c) A step of forming a patch shape imparter that forms a punched area in the structure through a punching process so that the shape of the patch to be transferred to the recording material is defined, d) A method for manufacturing a protective patch ribbon for a thermal transfer printer, comprising the step of forming an image receiving layer on the patch shape imparting body.

11. A method for manufacturing a protective patch ribbon for a thermal transfer printer according to claim 10, further comprising the step of applying a release layer coating liquid onto a patch shape imparting body after step c) above to form a release layer.

12. The method for manufacturing a protective patch ribbon for a thermal transfer printer according to claim 10, characterized in that, in step b) above, a release layer coating liquid is applied to the primer layer to form a structure containing a release layer on the primer layer.

13. A method for manufacturing a protective patch ribbon for a thermal transfer printer according to claim 12, characterized in that, in the perforated region formed in step c), the end of the perforated region on the peel side is incorporated into the transport film.

Images