Transferred film, and method for producing transferred film

Abstract

To provide a transferred film that includes a recorded transfer layer containing a laminate of at least two ink layers of different colors, which can prevent the visibility of the edge color of an ink layer concealed by the ink layer on the surface side, and to provide its manufacturing method.SOLUTION: A transferred tape 55B has a transparent cover film 83, a first ink layer 36, a second ink layer 37 with a different color from the first ink layer 36, and a substrate layer 80, which are laminated in the stated order. The first ink layer 36 and the second ink layer 37 constitute a transfer layer 82 transferred with an ink ribbon including the laminate of the first ink layer 36 and the second ink layer 37.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present disclosure relates to a transferred film having a transferred layer including at least two ink layers having different colors recorded thereon, and a method for producing the same. [Background technology]

[0002] Patent Document 1 discloses a transfer sheet printing device comprising: a supply section for a first sheet in which a dissolving layer and a sealing layer are laminated on a base sheet; a printing means for printing figures and / or characters on the surface of the sealing layer of the supplied first sheet; a supply section for a second sheet in which an adhesive layer and a release sheet are laminated on a cover sheet; a peeling means for peeling the release sheet to which the adhesive layer is attached from the cover sheet of the supplied second sheet; and a bonding means for matching the surface on which the adhesive layer of the release sheet peeled off by the peeling means is formed with the printed surface of the first sheet and bonding them together via the adhesive layer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-170663 Summary of the Invention [Problem to be solved by the invention]

[0004] One embodiment of the present disclosure provides a transferred film and a manufacturing method thereof that can suppress observation of the edge color of an ink layer hidden by a surface-side ink layer in a transferred film having a transfer layer recorded thereon, the transfer layer including a laminate of at least two ink layers of different colors. [Means for solving the problem]

[0005] A transferred film according to one embodiment of the present disclosure is a transferred film comprising a transparent film, a laminate of a first ink layer and a second ink layer having a different color from the first ink layer, and a base layer laminated in this order, and the first ink layer and the second ink layer are transfer layers transferred using an ink ribbon including the laminate of the first ink layer and the second ink layer. Effect of the Invention

[0006] According to the transferred film according to an embodiment of the present disclosure, the laminate of the first ink layer and the second ink layer is covered with a transparent film. This allows the transparent film to refract light incident on the laminate of the ink layers through the transparent film. As a result, when the ink layer (the surface-side ink layer) that is closer to the transparent film in the laminate of the ink layers is observed through the transparent film from an oblique direction or a lateral direction, it is possible to suppress observation of the edge color of the ink layer hidden by the surface-side ink layer. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram illustrating a schematic structure of a printing device according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a block diagram showing the electrical configuration of the printing device. [Diagram 3] FIG. 3 is a schematic diagram illustrating a heating process and a cooling process of the printing apparatus. [Figure 4] 4A and 4B are schematic diagrams illustrating the cooling step and the transfer step of the printing device. [Figure 5A] FIG. 5A is a schematic cross-sectional view showing a layer configuration of a transferred tape according to an embodiment of the present disclosure. [Figure 5B] FIG. 5B is a schematic cross-sectional view showing the layer configuration of the transferred tape according to one embodiment of the present disclosure. [Figure 5C] FIG. 5C is a schematic cross-sectional view showing a layer configuration of a transferred tape according to an embodiment of the present disclosure. [Figure 6]6A and 6B are diagrams showing an example of a pattern printed by the printing device. [Figure 7] FIG. 7 is a diagram for explaining the refraction of light in the transferred tape of FIG. 5A. [Figure 8] FIG. 8 is a diagram for explaining refraction of light in the tape with transferred image in FIG. 5B. [Figure 9] FIG. 9 is a diagram for explaining a method for evaluating oblique observation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Next, an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. In the following detailed description, there are a plurality of components with names having ordinal numbers, but the ordinal numbers do not necessarily match the ordinal numbers of the components described in the claims. [Overall configuration of printing device 1] FIG. 1 is a diagram illustrating a schematic structure of a printing device 1 according to an embodiment of the present disclosure.

[0009] 1, the printing device 1 is a thermal transfer type thermal printer that thermally transfers ink from an ink ribbon 3, which is an example of a thermal transfer recording medium, as characters onto a printer tape 2, which is an example of a print medium. In this embodiment, the printer tape 2 is, for example, a transparent base film onto which the ink is directly transferred. Here, the printer tape 2 being "transparent" may be defined as having a degree of transparency that allows the shape and color of the characters transferred onto the printer tape 2 to be recognized from the side opposite the transfer surface (printing surface).

[0010] The characters recorded on the printer tape 2 may include, for example, typical characters, symbols such as barcodes and QR codes (registered trademarks), numbers, figures, patterns, etc. The printing device 1 according to this embodiment can record characters of different colors (for example, two colors, black and red) on the printer tape 2.

[0011] The printing device 1 mainly includes a housing 4, a tape cassette 5 housed inside the housing 4, a thermal head 6, a platen roller 7, a nip roller 71, and a control board 8.

[0012] The housing 4 may be a box-shaped member made of, for example, a plastic case. An outlet 9 is formed on the outer wall of the housing 4 for removing the printer tape 2 after printing. A cutter (not shown) may be provided near the outlet 9. By cutting the printer tape 2 with the cutter, it is possible to separate the printer tape 2 into labels of a size for each unit of use and remove them.

[0013] The tape cassette 5 may be a cartridge that is removable from the housing 4. The tape cassette 5 may house, in order from the upstream side to the downstream side in the tape transport direction D1 (the direction from right to left in FIG. 1), a printer tape roll 10 (or, in other words, may be a label tape roll), an ink ribbon roll 12, an ink ribbon peeling member 13, an ink ribbon take-up roll 14, a laminating roller 72, and a laminating film roll 73. In this embodiment, the printer tape roll 10, the ink ribbon roll 12, the laminating roller 72, and the laminating film roll 73 are of a type that is used while being housed in the tape cassette 5, but may also be of a type that is used by being directly attached to the printing device 1, for example.

[0014] The printer tape roll 10 is produced by winding the printer tape 2 into a cylindrical shape, and is rotatably held in, for example, a tape cassette 5.

[0015] The ink ribbon roll 12 is produced by winding the ink ribbon 3 into a cylindrical shape, and is rotatably held, for example, in a tape cassette 5. A ribbon drive shaft 18 provided in the housing 4 is inserted into the ink ribbon take-up roll 14. A rotational force R1 generated by driving the ribbon drive shaft 18 is transmitted to the ink ribbon take-up roll 14, causing the ink ribbon take-up roll 14 to rotate.

[0016] The ink ribbon peeling member 13 may be a guide member that changes the transport direction D2 of the ink ribbon 3. The ink ribbon peeling member 13 may have a shape that can come into contact with the ink ribbon 3 during transport, for example, a roller-like or blade-like shape. A portion of the ink ribbon 3 is thermally pressed onto the printer tape 2 by the thermal head 6, and is transported together with the printer tape 2 toward the outlet 9. The ink ribbon peeling member 13 comes into contact with the ink ribbon 3 during transport, and changes the transport direction D2 of the ink ribbon 3 at a steep angle with respect to the transport direction D1 of the printer tape 2. This causes the printer tape 2 and the ink ribbon 3 to be separated, and the ink ribbon 3 is peeled off from the printer tape 2.

[0017] For example, a lamination roller drive shaft 75 provided in the housing 4 can be inserted into the lamination roller 72. A rotational force R4 generated by driving the lamination roller drive shaft 75 is transmitted to the lamination roller 72, causing the lamination roller 72 to rotate. The lamination roller 72 is provided inside the tape cassette 5 as shown in FIG. 1, and a portion of the lamination roller 72 is exposed in the transport path of the printer tape 2. This allows the printer tape 2 to be sandwiched between the lamination roller 72 and the nip roller 71 and transported when the tape cassette 5 is installed.

[0018] The laminated film roll 73 is produced by winding a laminated tape 76 into a cylindrical shape, and is rotatably held in, for example, the tape cassette 5.

[0019] The thermal head 6 is disposed between the printer tape roll 10, the ink ribbon roll 12, and the ink ribbon peeling member 13 in the transport direction D1 of the printer tape 2. The thermal head 6 includes a substrate 19 and a heating element 20 (e.g., a heating resistor) formed on the substrate 19. Joule heat generated by energizing the heating element 20 is utilized for thermal transfer of ink on the ink ribbon 3.

[0020] For example, a platen drive shaft 21 provided in the housing 4 is inserted into the platen roller 7. A rotational force R2 generated by driving the platen drive shaft 21 is transmitted to the platen roller 7, causing the platen roller 7 to rotate.

[0021] For example, a nip roller drive shaft 74 provided in the housing 4 is inserted into the nip roller 71. A rotational force R3 generated by driving the nip roller drive shaft 74 is transmitted to the nip roller 71, causing the nip roller 71 to rotate.

[0022] The control board 8 is an electronic device that executes electrical control of the printing device 1, and is installed inside the housing 4.

[0023] [Electrical configuration of printing device 1] FIG. 2 is a block diagram showing the electrical configuration of the printing device 1. As shown in FIG.

[0024] 2, a control circuit 22 is provided on the control board 8 of the printing device 1. The control circuit 22 may include a CPU 23, a ROM 24, a memory 25, a RAM 26, and an input / output I / F 27 (interface). These are electrically connected via, for example, a data bus (not shown).

[0025] The ROM 24 stores various programs for driving the printer 1 (e.g., control programs for executing the steps shown in FIG. 3 and FIGS. 4A and 4B, etc.). The CPU 23 executes signal processing according to the programs stored in the ROM 24 while utilizing the temporary storage function of the RAM 26, and controls the printer 1 as a whole. The memory 25 may be configured, for example, as a part of the storage area of ​​the ROM 24. The memory 25 may previously store a table for displaying the remaining amount (amount consumed) of the ink ribbon 3 on a display unit (not shown) of the housing 4.

[0026] A first drive circuit 28 and a second drive circuit 29 are electrically connected to the input / output I / F 27. The first drive circuit 28 executes energization control of the heating elements 20 of the thermal head 6. The second drive circuit 29 executes drive control to output drive pulses to a drive motor 30 that drives and rotates the ink ribbon take-up roll 14, the platen roller 7, the nip roller 71, and the lamination roller 72.

[0027] [Printing process flow by printing device 1] Fig. 3 is a schematic diagram for explaining the heating process and the cooling process of the printing device 1. Fig. 4A and Fig. 4B are schematic diagrams for explaining the cooling process and the transfer process of the printing device 1. Fig. 4B is an enlarged view of the main part when the transfer pattern is viewed from the direction of the arrow 4B in Fig. 4A. The printing process by the printing device 1 will be specifically explained with reference to Figs. 1, 3, and 4A and B.

[0028] To print characters on the printer tape 2, the printer tape 2 is pulled out from the printer tape roll 10 by the rotational drive of the platen roller 7, and the ink ribbon 3 is pulled out from the ink ribbon roll 12 by the rotational drive of the ink ribbon take-up roll 14. As a result, the printer tape 2 and the ink ribbon 3 are transported downstream while overlapping each other, as shown in Figures 1 and 3. The surface of the printer tape 2 facing the ink ribbon 3 is the printing surface 31 (front surface), and the opposite surface is the back surface 32. The surface of the ink ribbon 3 facing the printer tape 2 is the adhesive surface 33 (front surface), and the opposite surface is the back surface 34.

[0029] 3, the ink ribbon 3 includes a base layer 35, a first ink layer 36, and a second ink layer 37. The first ink layer 36 and the second ink layer 37 are laminated in this order on a front surface 38, which is an example of a first surface, of the base layer 35. The surface of the base layer 35 opposite the front surface 38 is a back surface 39 (back surface 34 of the ink ribbon 3). The first ink layer 36 and the second ink layer 37 contain colorants of different colors. For example, the first ink layer 36 may contain a black colorant, and the second ink layer 37 may contain a red colorant.

[0030] The ink ribbon 3 is transported toward the thermal head 6 with the second ink layer 37 and the printer tape 2 in contact with each other. In the thermal head 6, a heating process is carried out as shown in Fig. 3. Specifically, the heating elements 20, which have generated heat by being energized, are pressed against the ink ribbon 3, and the heat is transferred to the first ink layer 36 and the second ink layer 37 via the base layer 35. The laminate of the ink ribbon 3 and the printer tape 2 is sandwiched between the thermal head 6 and the platen roller 7, and is transported downstream while being heated by the thermal head 6.

[0031] The heating element 20 may be controlled to the same temperature as a whole, or may be controlled to different temperatures in parts. For example, as shown in Fig. 3, a first portion 40 of the heating element 20 may be controlled to a relatively low first heating temperature, and a second portion 41 of the heating element 20 may be controlled to a second heating temperature higher than the first heating temperature. The first heating temperature may be controlled by applying a relatively low first amount of energy to the thermal head 6, and the second heating temperature may be controlled by applying a relatively higher second amount of energy to the thermal head 6 than the first amount of energy.

[0032] The first heating temperature may be, for example, 60°C or more and 120°C or less, and preferably 70°C or more and 90°C or less. For example, the second heating temperature may be 80°C or more and 180°C or less, and preferably 130°C or more and 150°C or less. The first energy amount and the second energy amount may be set according to the specifications of the printing device 1 so that the thermal head 6 is heated to the first heating temperature and the second heating temperature, respectively. For example, in a printing device 1 whose specifications allow the applied energy amount to be directly set by a voltage value, the voltage value may be set, and in a printing device 1 whose specifications allow the applied energy amount to be increased or decreased by adjusting the energy amount divided into multiple stages, the energy amount of an appropriate stage may be set.

[0033] As a result, the ink ribbon 3 may include a first portion 42 heated to a first heating temperature and a second portion 43 heated to a second heating temperature. In the first portion 42 and the second portion 43 of the ink ribbon 3, at least a part or the whole of the first ink layer 36 and the second ink layer 37 melt or soften and come into close contact with the printer tape 2.

[0034] 3 and 4A and 4B, a cooling process is carried out in the section between the thermal head 6 and the ink ribbon peeling member 13. Specifically, the ink ribbon 3 that has been thermocompressed to the printer tape 2 in the heating process is naturally cooled in the section from the thermal head 6 to the ink ribbon peeling member 13, and the temperature drops toward the ambient temperature of the printing device 1.

[0035] Next, as shown in FIGS. 4A and 4B, the ink ribbon peeling member 13 selectively changes only the conveying direction D2 of the ink ribbon 3, and an external force F1 is applied to the base layer 35 and the second ink layer 37 in a direction away from each other. This causes the printer tape 2 and the ink ribbon 3 to be separated, and the ink ribbon 3 is taken up by the ink ribbon take-up roll 14. At this time, the first portion 42 and the second portion 43 of the ink ribbon 3 heated by the thermal head 6 selectively remain on the printer tape 2, thereby performing the transfer process. For example, in the first portion 42, peeling may occur between the base layer 35 and the laminate including the first ink layer 36 and the second ink layer 37, and the laminate may be transferred. On the other hand, in the second portion 43, peeling may occur between the first ink layer 36 and the second ink layer 37, and the second ink layer 37 may be selectively transferred.

[0036] 1, a lamination tape 76 is laminated to the printer tape 2 to which the first ink layer 36 and the second ink layer 37 have been transferred. The transferred tape 55, which has been formed by laminating the lamination tape 76 to the printer tape 2 and has characters recorded thereon, is taken out from the outlet 9 of the printing device 1. [Layer structure of transferred tape 55] 5A and 5B are schematic cross-sectional views showing a layer structure of a transferred tape 55 according to an embodiment of the present disclosure. 6A and 6B are diagrams showing an example of a printed pattern 44 by the printing device 1.

[0037] 5A and 5B, the transferred tape 55 is roughly divided into two layer configurations depending on the type of printer tape 2. Fig. 5A shows a transferred tape 55A including a printer tape 2 as a transparent base film (base tape) which is an example of a transparent film, and Fig. 5B shows a transferred tape 55B including a printer tape 2 as a non-transparent base film (base tape). The layer configurations of the transferred tape 55A and the transferred tape 55B are described below. <Transferred Tape 55A> 5A, the transferred tape 55A includes a printed matter 56 including the printer tape 2 to which a portion of the ink ribbon 3 has been transferred, and a lamination tape 76 laminated to the printed matter 56. The lamination tape 76 may be referred to as a lamination film. Fig. 5A shows a cross section of a portion of the transferred tape 55A to which a laminate of the first ink layer 36 and the second ink layer 37 has been transferred as the first transfer layer 57, and omits a cross section of a portion of the transferred tape 55A to which the second ink layer 37 has been selectively transferred as the second transfer layer.

[0038] In the transferred tape 55A of this embodiment, the lamination tape 76 is formed as a mount film that supports the first transfer layer 57. The printer tape 2 is formed as a transparent cover film that physically protects the first transfer layer 57 from the outside. Therefore, in the first transfer layer 57, the second ink layer 37 on the side closer to the printer tape 2 is the front-side ink layer (the observation-side ink layer). As shown by the white arrow 59, a person can recognize the respective colors of the first ink layer 36 and the second ink layer 37 by the light that has passed through the printer tape 2 and is reflected by the first ink layer 36 or the second ink layer 37.

[0039] On the transferred tape 55A, a printing pattern 44 of different colors (for example, two colors recognized as black and red) is formed. The printing pattern 44 may have different colors for each independent character, for example, as shown in FIG. 6A. In FIG. 6A, when the printing pattern 44 is viewed from the rear surface 32 side of the printer tape 2, a red pattern 45 based on the second ink layer 37 may be recognized on the outermost surface of the alphabet characters "A" and "C," and a black pattern 46 based on the first ink layer 36 may be recognized on the outermost surface of "B." On the other hand, as shown in FIG. 6B, the printing pattern 44 may have both a red pattern 45 and a black pattern 46 recognized for each part of each character.

[0040] Next, the layer structure of transferred tape 55A will be described in more detail.

[0041] As described above, the transferred tape 55A is formed by laminating the printed matter 56 and the laminating tape 76 together.

[0042] The printed matter 56 includes the printer tape 2 and a first transfer layer 57 selectively formed on the printing surface 31 of the printer tape 2. The first transfer layer 57 includes the second ink layer 37 and the first ink layer 36 laminated in order on the printing surface 31. (1) Printer Tape 2 The printer tape 2 is not particularly limited as long as it is a transparent base film to which ink can be directly transferred, and examples of such films include resin films such as polyester, polyethylene, polypropylene, polyamide, polyimide, polycarbonate, polystyrene, and fluororesin. Of these, a film of polyethylene terephthalate (PET), which is a polyester, is preferred from the viewpoints of mechanical strength, dimensional stability, heat treatment resistance, cost, etc. The printer tape 2 may be a single layer of any of the above resin films, or a laminate film formed by laminating a plurality of the above resin films.

[0043] The printer tape 2 may be formed from any of the above-mentioned resin films, and may be selected based on the refractive index of the resin film. For example, the refractive index of the printer tape 2 is 1.4 or more, preferably 1.5 or more, and more preferably 1.6 or more. The refractive index may be, for example, a refractive index measured by spectroscopic ellipsometry.

[0044] The thickness of the printer tape 2 can be set arbitrarily depending on, for example, the specifications of the thermal transfer printer, the characteristics required of the printer tape 2, etc. For example, the thickness of the printer tape 2 is 1 μm or more, preferably 2 μm or more, and more preferably 5 μm or more. For example, the thickness of the printer tape 2 is 30 μm or less, preferably 15 μm or less, and more preferably 10 μm or less. For example, the thickness of the printer tape 2 is 1 μm or more and 30 μm or less, preferably 2 μm or more and 15 μm or less, and more preferably 5 μm or more and 10 μm or less.

[0045] If the thickness of the printer tape 2 is within this range, it is possible to provide the transferred tape 55A with adequate flexibility while exhibiting sufficient mechanical strength and elasticity. If the flexibility of the transferred tape 55A is important, the printer tape 2 may be thinner than the above range. This allows the transferred tape 55A to be well attached to a complex curved surface. On the other hand, if the mechanical strength and elasticity of the transferred tape 55A are important, the printer tape 2 may be thicker than the above range. This makes it possible to prevent wrinkles from occurring in the printer tape 2 during transportation in the printing device 1 or when the lamination tape 76 is laminated. In addition, it is preferable that the thickness of the printer tape 2 is greater than the thickness of the second ink layer 37 described later.

[0046] The printer tape 2 may be a non-stretched film that has not been stretched during the manufacturing process, or may be a stretched film that has been stretched by uniaxial stretching, biaxial stretching, or the like. The surfaces (printing surface 31 and back surface 32) of the printer tape 2 may be finished with a glossy finish, a matte finish, or the like. Furthermore, a primer layer for improving the printability of the printer tape 2, an overcoat layer for adjusting friction, a release layer using silicone for protecting the surface of the printer tape 2 before use, and the like may be separately formed. These layers may conceptually be part of the printer tape 2.

[0047] As a numerical value representing the transparency of the printer tape 2, for example, the total light transmittance measured in accordance with JIS K 7361 may be used. The total light transmittance of the printer tape 2 may be, for example, 80% or more, and preferably 85% or more. The total light transmittance of the printer tape 2 can be measured, for example, using a haze meter. (2) First ink layer 36 The first ink layer 36 can be formed, for example, from any thermoplastic resin. The first ink layer 36 is preferably formed from an epoxy resin as the thermoplastic resin. The first ink layer 36 can be formed from an epoxy resin in a state in which a curing agent is not blended (except for the curing agent) as the thermoplastic resin.

[0048] Examples of epoxy resins include bisphenol A type epoxy resins, bisphenol F type epoxy resins, phenol novolac type epoxy resins, cresol novolac type epoxy resins, alicyclic epoxy resins, hydrogenated bisphenol A type epoxy resins, hydrogenated bisphenol AD ​​type epoxy resins, propylene glycol glycoxyl ether, pentaerythritol polyglycidyl ether and other aliphatic epoxy resins, epoxy resins obtained from aliphatic or aromatic amines and epichlorohydrin, epoxy resins obtained from aliphatic or aromatic carboxylic acids and epichlorohydrin, heterocyclic epoxy resins, spiro ring-containing epoxy resins, epoxy modified resins, brominated epoxy resins, etc. Specific examples of epoxy resins include, but are not limited to, the following various epoxy resins. These epoxy resins can be used alone or in combination of two or more.

[0049] Among the JER (registered trademark) series epoxy resins manufactured by Mitsubishi Chemical Corporation, the basic solid types are 1001 [softening point (ring and ball method): 64°C, number average molecular weight Mn: about 900], 1002 [softening point (ring and ball method): 78°C, number average molecular weight Mn: about 1200], 1003 [softening point (ring and ball method): 78°C, number average molecular weight Mn: about 1200], Softening point (ring and ball method): 89℃, number average molecular weight Mn: approx. 1300], 1055 [softening point (ring and ball method): 93℃, number average molecular weight Mn: approx. 160 0], 1004 [Softening point (ring and ball method): 97℃, number average molecular weight Mn: about 1650], 1004AF [Softening point (ring and ball method): 97℃, number average Molecular weight Mn: about 1650], 1007 [softening point (ring and ball method): 128℃, number average molecular weight Mn: about 2900], 1009 [softening point (ring and ball method) method): 144℃, number average molecular weight Mn: approximately 3800], 1010 [number average molecular weight Mn: approximately 5500], 1003F [softening point (ring and ball method): 96℃], 1004F [Softening point (ring and ball method): 103℃], 1005F, 1009F [Softening point (ring and ball method): 144℃], 1004FS [Softening point (ring and ball method): 100℃], 1006FS [Softening point (ring and ball method): 112℃], 1007FS [Softening point (ring and ball method): 124℃].

[0050] The softening point of the epoxy resin used in the first ink layer 36 is, for example, 95° C. or higher, preferably 110° C. or higher, and more preferably 125° C. or higher. If the softening point is within this range, it is possible to prevent high adhesion between the first ink layer 36 and the base layer 35 (see FIG. 3 and FIGS. 4A and 4B) at the relatively low temperatures during low-temperature transfer. Since the low-temperature transfer range of the first ink layer 36 can be sufficiently expanded to the high-temperature side, it is possible to prevent color from becoming cloudy even when thermal transfer recording is performed continuously.

[0051] The first ink layer 36 may contain an adhesive in addition to the epoxy resin. Examples of the adhesive include a rubber-based adhesive, an acrylic-based adhesive, a silicone-based adhesive, a vinyl alkyl ether-based adhesive, a polyvinyl alcohol-based adhesive, a polyvinyl pyrrolidone-based adhesive, a polyacrylamide-based adhesive, and a cellulose-based adhesive.

[0052] Considering the improvement of affinity and compatibility with epoxy resin, the adhesive is preferably an acrylic adhesive. Specific examples of the acrylic adhesive are not particularly limited, but include the following various acrylic adhesives. These acrylic adhesives can be used alone or in combination of two or more.

[0053] Among the Olivine (registered trademark) BPS (solvent-based) series manufactured by Toyochem Co., Ltd., BPS1109 (non-volatile content: 39.5% by mass), BPS3156D (non-volatile content: 34% by mass), BPS4429-4 (non-volatile content: 45% by mass), BPS4849-40 (non-volatile content: 40% by mass), BPS5160 (non-volatile content: 33% by mass), BPS5213K (non-volatile content: 35% by mass), BPS5215K (non-volatile content: 39% by mass), BPS5227-1 (non-volatile content: 41.5% by mass), BPS5296 (non-volatile content: 37% by mass), BPS5330 (non-volatile content: 40% by mass), BPS5375 (non-volatile content: 45% by mass), BPS5448 (non-volatile content: 40% by mass), BPS5513 (non-volatile content: 44.5% by mass), BPS55 65K (non-volatile content: 45% by mass), BPS5669K (non-volatile content: 46% by mass), BPS5762K (non-volatile content: 45.5% by mass), BPS5896 (non-volatile content: 37% by mass), BPS5978 (non-volatile content: 35% by mass), BPS6074HTF (non-volatile content: 52% by mass), BPS6080TFK (non-volatile content: 45% by mass), BPS6130TF (non-volatile content: 52% by mass), (Non-volatile content: 45.5% by mass), BPS6153K (Non-volatile content: 25% by mass), BPS6163 (Non-volatile content: 37% by mass), BPS6231 (Non-volatile content: 56% by mass), BPS6421 (Non-volatile content: 47% by mass), BPS6430 (Non-volatile content: 33% by mass), BPS6574 (Non-volatile content: 57% by mass), BPS8170 (Non-volatile content: 36.5% by mass), BPS HS-1 (Non-volatile content: 40% by mass).

[0054] Among the solvent-based adhesives (removable type) manufactured by Lion Specialty Chemicals Co., Ltd., the following are used: AS-325 (solid content: 45% by mass), AS-375 (solid content: 45% by mass), AS-409 (solid content: 45% by mass), AS-417 (solid content: 45% by mass), AS-425 (solid content: 45% by mass), AS-455 (solid content: 45% by mass), AS-665 (solid content: 40% by mass), AS-1107 (solid content: 43% by mass), and AS-4005 (solid content: 45% by mass).

[0055] The acrylic adhesive used in the first ink layer 36 may be used in combination with a tackifier. For example, this is because it can increase the sharpness of the first ink layer 36, suppress excess peeling, and improve the clarity of the recorded characters. Examples of tackifiers include ester gum, terpene phenol resin, and rosin ester. Specific examples of the tackifier are not particularly limited, but include the following various tackifiers. These tackifiers can be used alone or in combination of two or more types.

[0056] Among the terpene phenol resins of the YS Polystar series manufactured by Yasuhara Chemical Co., Ltd., U130 (softening point: 130±5°C), U115 (softening point: 115±5°C), T160 (softening point: 160±5°C), T145 (softening point: 145±5°C), T130 (softening point: 130±5°C), T115 (softening point: 115± 5℃), T100 (softening point: 100±5℃), T80 (softening point: 80±5℃), S145 (softening point: 145±5℃), G150 (softening point: 150±5℃) , G125 (softening point: 125±5℃), N125 (softening point: 125±5℃), K125 (softening point: 125±5℃), TH130 (softening point: 130±5℃).

[0057] Among the ester gums manufactured by Arakawa Chemical Co., Ltd., AA-G [softening point (ring and ball method): 82~88℃], AA-L [softening point (ring and ball method): 82~88℃], AA-V [softening point (ring and ball method): 82~95℃] , 105 [Softening point (ring and ball method): 100~110℃], AT [Viscosity: 20000~40000mPa·s], H [Softening point (ring and ball method): 68~75℃], HP [Softening point (ring and ball method): 80℃ or higher].

[0058] Among the rosin esters of the Pencel (registered trademark) series manufactured by Arakawa Chemical Co., Ltd., GA-100 [softening point (ring and ball method): 100~110℃], AZ [softening point (ring and ball method): 950~105℃], C [softening point (ring and ball method): 117~ 127℃], D-125 [Softening point (ring and ball method): 120~130℃], D-135 [Softening point (ring and ball method): 130~ 140℃], D-160 [Softening point (ring and ball method): 150~165℃], KK [Softening point (ring and ball method): 165℃ or higher].

[0059] The softening point of the tackifier used in the first ink layer 36 is, for example, 60° C. or higher, and preferably 120° C. or lower. If the softening point is within this range, the first ink layer 36 can be favorably reverse-transferred to the base material layer 48 during high-temperature transfer. Since the high-temperature transfer range of the first ink layer 36 can be sufficiently expanded to the low-temperature side, it is possible to suppress the color from becoming cloudy.

[0060] The first ink layer 36 may contain any colorant. As the colorant, one or more of various colorants can be used according to the color of the first ink layer 36. The colorant may be, for example, a pigment or a dye. Considering the concealing property of the base, the colorant used in the first ink layer 36 is preferably a pigment. In the transferred tape 55A, the black color of the first ink layer 36 is recognized by the light that passes through the transparent printer tape 2 and the second ink layer 37 and is reflected by the first ink layer 36. In other words, by suppressing the light from passing through the first ink layer 36, the black color of the first ink layer 36 can be well recognized through the printer tape 2 and the second ink layer 37. For example, carbon black is preferable as a pigment for coloring the first ink layer 36 black. Specific examples of carbon black are not particularly limited, but include, for example, the following various carbon blacks. These carbon blacks can be used alone or in combination of two or more types.

[0061] Mitsubishi Chemical Corporation's MA77 powder type (LFF, DBP absorption capacity: 68 cm 3 / 100g], MA7 powder [LFF, DBP absorption: 66cm 3 / 100g], MA7 granular [LFF, DBP absorption capacity: 65cm 3 / 100g], MA8 powder [LFF, DBP absorption: 57cm 3 / 100g], MA8 granular [LFF, DBP absorption: 51cm 3 / 100g], MA11 powder [LFF, DBP absorption: 64cm 3 / 100g], MA100 powder [LFF, DBP absorption capacity: 100cm 3 / 100g], MA100 granules [LFF, DBP absorption capacity: 95cm 3 / 100g], MA100R powder [LFF, DBP absorption capacity: 100cm 3 / 100g], MA100R granular [LFF, DBP absorption capacity: 95cm 3 / 100g], MA100S powder [LFF, DBP absorption capacity: 100cm 3 / 100g], MA230 powder [LFF, DBP absorption: 113cm 3 / 100g], MA220 powder [LFF, DBP absorption: 93cm 3 / 100g], MA14 powder [LFF, DBP absorption: 73cm 3 / 100g).

[0062] Mitsubishi Chemical Corporation #3030B (furnace method, DBP absorption: 130 cm 3 / 100g), #3040B (furnace method, DBP absorption: 114cm 3 / 100g), #3050B (furnace method, DBP absorption: 175cm 3 / 100g), #3230B (furnace method, DBP absorption: 140cm 3 / 100g), #3350B (furnace method, DBP absorption: 164cm 3 / 100g), #3400B (furnace method, DBP absorption: 175cm 3 / 100g).

[0063] #5500 (furnace method, DBP absorption: 155 cm) from the Toka Black (registered trademark) series manufactured by Tokai Carbon Co., Ltd. 3 / 100g), #4500 (furnace method, DBP absorption: 168cm 3 / 100g), #4400 (furnace method, DBP absorption: 135cm 3 / 100g), #4300 (furnace method, DBP absorption: 142cm 3 / 100g).

[0064] Orion Engineered Carbons' PRINTEX series (registered trademark) L (furnace method, DBP absorption: 120 cm 3 / 100g), L6 (furnace method, DBP absorption: 126cm 3 / 100g).

[0065] Birla Carbon's CONDUCTEX (registered trademark) series, 975 (furnace method, 170 cm 3 / 100g), SC (furnace method, 115cm 3 / 100g).

[0066] Among the VULCAN (registered trademark) series manufactured by CABOT, XC72 (furnace method, DBP absorption: 174 cm 3 / 100g), 9A32 (furnace method, DBP absorption: 114cm 3 / 100g), and 3700 of the company's BLACK PEARLS series (furnace method, DBP absorption: 111 cm 3 / 100g).

[0067] Among the Denka Black (registered trademark) series manufactured by Denka Co., Ltd., Denka Black Granules (acetylene method, DBP absorption: 160 cm 3 / 100g), FX-35 (acetylene method, DBP absorption: 220cm 3 / 100g), HS-100 (acetylene method, DBP absorption: 140cm 3 / 100g).

[0068] Among the KETJENBLACK (registered trademark) series manufactured by Lion Specialty Chemicals Co., Ltd., EC300J (gasification method, DBP absorption capacity: 360 cm 3 / 100g), EC600DJ (gasification method, DBP absorption: 495cm 3 / 100g).

[0069] The ratio of each component in the first ink layer 36 is not particularly limited. The ratio of the acrylic adhesive to 100 parts by mass of the epoxy resin is, for example, 30 parts by mass or more, and preferably 40 parts by mass or more. The ratio of the acrylic adhesive to 100 parts by mass of the epoxy resin is, for example, 150 parts by mass or less, and preferably 100 parts by mass or less. The ratio of the acrylic adhesive to 100 parts by mass of the epoxy resin is, for example, 30 parts by mass or more and 150 parts by mass or less, and preferably 40 parts by mass or more and 100 parts by mass or less.

[0070] The ratio of the tackifier to 100 parts by mass of the epoxy resin is, for example, 3 parts by mass or more, and preferably 5 parts by mass or more. The ratio of the tackifier to 100 parts by mass of the epoxy resin is, for example, 150 parts by mass or less, and preferably 100 parts by mass or less. The ratio of the tackifier to 100 parts by mass of the epoxy resin is, for example, 3 parts by mass or more and 150 parts by mass or less, and preferably 5 parts by mass or more and 100 parts by mass or less.

[0071] The ratio of the colorant such as carbon black to 100 parts by mass of epoxy resin is, for example, 100 parts by mass or more, preferably 130 parts by mass or more. The ratio of the colorant to 100 parts by mass of epoxy resin is, for example, 230 parts by mass or less, preferably 200 parts by mass or less. The ratio of the colorant to 100 parts by mass of epoxy resin is, for example, 100 parts by mass or more and 230 parts by mass or less, preferably 130 parts by mass or more and 200 parts by mass or less.

[0072] In addition, for the components contained in the first ink layer 36 that are supplied in liquid form dissolved or dispersed in an arbitrary solvent, the amount of each component may be adjusted so that the proportion of the active ingredient falls within the above-mentioned range (the same applies below).

[0073] The first ink layer 36 can be formed, for example, by applying a coating material in which each of the above components is dissolved or dispersed in an arbitrary solvent directly onto the surface 38 of the base layer 35 or via an arbitrary release layer, and then drying the coating material. In the present disclosure, as shown in Figs. 6A and 6B, the characters to be recorded on the printer tape 2 are color-coded. For this color coding, in consideration of adjusting the adhesion between the first ink layer 36 and the base layer 35 and each of the other layers, it is preferable to form the first ink layer 36 directly on the surface 38 of the base layer 35 without using a release layer.

[0074] The thickness of the first ink layer 36 can be set arbitrarily according to, for example, the specifications of the thermal transfer printer, etc. The thickness of the first ink layer 36 can be adjusted by the amount of the first ink layer 36 applied.

[0075] For example, the coating amount of the first ink layer 36 is 0.1 g / m2 in terms of the amount of solids per unit area. 2 or more, preferably 0.5 g / m 2 For example, the coating amount of the first ink layer 36 is 3.0 g / m2 in terms of the amount of solid content per unit area. 2 or less, preferably 2.5 g / m 2 For example, the coating amount of the first ink layer 36 is 0.1 g / m2 in terms of the amount of solids per unit area. 2 More than 3.0g / m 2 less than 0.5 g / m 2 More than 2.5g / m 2 The following is the result.

[0076] A specific thickness of the first ink layer 36 (before printing) is, for example, 0.05 μm or more, and preferably 0.5 μm or more. The thickness of the first ink layer 36 is, for example, 3.0 μm or less, and preferably 2.5 μm or less. The thickness of the first ink layer 36 may be, for example, 0.05 μm or more and 3.0 μm or less, and preferably 0.5 μm or more and 2.5 μm or less. The thickness of the first ink layer 36 can be confirmed based on, for example, a SEM (Scanning Electron Microscope) image, a TEM (Transmission Electron Microscope) image, or the like of the ink ribbon 3. (3) Second ink layer 37 The second ink layer 37 can be formed, for example, from any thermoplastic resin. Examples of the thermoplastic resin used for the second ink layer 37 include epoxy resin, polyester resin, polyolefin resin, and the like. The thermoplastic resin can be appropriately selected depending on the material from which the printer tape 2 is formed, and the like. When the first ink layer 36 is formed from an epoxy resin, it is preferable that the second ink layer 37 is also formed from an epoxy resin.

[0077] By forming the second ink layer 37 from an epoxy resin, the adhesive force of the first ink layer 36 to the base layer 35 and the adhesive force of the second ink layer 37 to the printer tape 2 can be counterbalanced. This allows the first ink layer 36 to be well separated to the base layer 35 side and the second ink layer 37 to be well separated to the printer tape 2 side during high-temperature transfer. Since the high-temperature transfer range can be expanded to the low-temperature side, the effect of suppressing color turbidity can be further improved. Examples of epoxy resins include the various epoxy resins exemplified as the epoxy resin of the first ink layer 36. These epoxy resins can be used alone or in combination of two or more types.

[0078] The second ink layer 37 may contain wax in addition to the thermoplastic resin. By containing wax, the first ink layer 36 can be well separated to the base layer 35 side and the second ink layer 37 to the printer tape 2 side during high-temperature transfer. Therefore, the high-temperature transfer range can be expanded to the low-temperature side, further improving the effect of suppressing color turbidity.

[0079] As the wax, any wax having affinity or compatibility with thermoplastic resins such as epoxy resins can be used. For example, natural waxes such as carnauba wax, paraffin wax, and microcrystalline wax, and synthetic waxes such as Fischer-Tropsch wax can be used. Specific examples of waxes are not particularly limited, but include, for example, carnauba wax No. 1 flake, No. 2 flake, No. 3 flake, No. 1 powder, and No. 2 powder (all of which have a melting point of 80 to 86°C) manufactured by Toyochem Co., Ltd., and paraffin waxes EMUSTAR-1155 (melting point: 69°C), EMUSTAR-0135 (melting point: 60°C), EMUSTAR-0136 (melting point: 60°C), and EMUSTAR-0137 (melting point: 60°C) manufactured by Nippon Seiro Co., Ltd. Examples of suitable waxes include microcrystalline waxes manufactured by Nippon Seiro Co., Ltd., such as EMUSTAR-0001 (melting point: 84° C.) and EMUSTAR-042X (melting point: 84° C.), and Fischer-Tropsch waxes manufactured by Nippon Seiro Co., Ltd., such as FNP-0090 (congealing point: 90° C.), SX80 (congealing point: 83° C.), FT-0165 (melting point: 73° C.), and FT-0070 (melting point: 72° C.). These waxes can be used alone or in combination of two or more kinds.

[0080] The second ink layer 37 may contain any colorant. As the colorant, one or more of various colorants can be used according to the color of the second ink layer 37. The colorant may be, for example, a pigment or a dye. In the transferred tape 55A, the black color of the first ink layer 36 is recognized by the light that is transmitted through the transparent printer tape 2 and the second ink layer 37 and reflected by the first ink layer 36. Therefore, from the viewpoint of ensuring transparency with respect to the first ink layer 36, the second ink layer 37 preferably contains a colorant containing at least a dye. The second ink layer 37 preferably contains only a dye as a colorant, and may contain a dye and a pigment in a proportion less than the dye.

[0081] As an index of transparency for the first ink layer 36, a total light transmittance measured in accordance with JIS K 7361 may be used. The total light transmittance of the second ink layer 37 may be, for example, 16% or more, and preferably 16.5% or more.

[0082] For example, examples of dyes for coloring the second ink layer 37 red include the following various red dyes, such as oil-soluble dyes, acid dyes, basic dyes, metal-containing dyes, and various salt-forming dyes thereof. These red dyes can be used alone or in combination of two or more kinds.

[0083] CI Basic Red 1, 12, 13; CI Acid Red 13, 14, 18, 27, 50, 52; CI Solvent Red 25, 27, 30, 35, 49, 83, 89, 100, 122, 138, 149, 150, 160, 179, 218, 230; CI Direct Red 20, 37, 39, 44; CI Disperse Red 5, 7, 13, 17.

[0084] For example, the following various red pigments can be used as pigments for coloring the second ink layer 37 red. These red pigments can be used alone or in combination of two or more kinds.

[0085] CI Pigment Red 5, 7, 9, 12, 48(Ca), 48(Mn), 49, 52, 53, 53:1, 57(Ca), 57:1, 97, 112, 122, 123, 149, 168, 177, 178, 179, 184, 202, 206, 207, 209, 242, 254, 255.

[0086] Furthermore, the L value of the color difference of the reflected light from the second ink layer 37 having the exemplified composition is not more than 20, preferably not more than 15, more preferably not more than 10, and particularly preferably not more than 5. The L value may be, for example, a reflection density (L value) measured by using a reflection color difference meter to apply a light beam from the second ink layer 37 side of the ink ribbon 3. If the L value of the reflected light from the second ink layer 37 is within the above range, sufficient transparency to the first ink layer 36 can be ensured.

[0087] The ratio of each component in the second ink layer 37 is not particularly limited. The ratio of wax to 100 parts by mass of epoxy resin is, for example, 3 parts by mass or more, and preferably 5 parts by mass or more. The ratio of wax to 100 parts by mass of epoxy resin is, for example, 11 parts by mass or less, and preferably 9 parts by mass or less. The ratio of wax to 100 parts by mass of epoxy resin is, for example, 3 parts by mass or more and 11 parts by mass or less, and preferably 5 parts by mass or more and 9 parts by mass or less.

[0088] The ratio of the colorant such as a red dye to 100 parts by mass of the epoxy resin (total amount of colorant) is, for example, 70 parts by mass or more, preferably 80 parts by mass or more. The ratio of the colorant such as a red dye to 100 parts by mass of the epoxy resin is, for example, 140 parts by mass or less, preferably 120 parts by mass or less. The ratio of the colorant such as a red dye to 100 parts by mass of the epoxy resin is, for example, 70 parts by mass or more and 140 parts by mass or less, preferably 80 parts by mass or more and 120 parts by mass or less.

[0089] The second ink layer 37 can be formed, for example, by applying a coating material in which the above-mentioned components are dissolved or dispersed in an arbitrary solvent onto the first ink layer 36, and then drying the coating material.

[0090] The thickness of the second ink layer 37 can be set arbitrarily according to, for example, the specifications of the thermal transfer printer. The thickness of the second ink layer 37 can be adjusted by the coating amount of the second ink layer 37. For example, the coating amount of the second ink layer 37 is 0.2 g / m2 expressed in terms of the amount of solids per unit area. 2 or more, preferably 1.0 g / m 2 For example, the coating amount of the second ink layer 37 is 7.0 g / m2 in terms of the amount of solid content per unit area. 2 or less, preferably 5.0 g / m 2 For example, the coating amount of the second ink layer 37 is 0.2 g / m2 in terms of the amount of solid content per unit area. 2 More than 7.0g / m 2 or less, preferably 1.0 g / m 2 More than 5.0g / m 2 The following is the result.

[0091] A specific thickness of the second ink layer 37 (before printing) is, for example, 0.05 μm or more, and preferably 1.0 μm or more. The thickness of the second ink layer 37 is, for example, 7.0 μm or less, and preferably 5.0 μm or less. The thickness of the second ink layer 37 may be, for example, 0.05 μm or more and 7.0 μm or less, and preferably 1.0 μm or more and 5.0 μm or less. The thickness of the second ink layer 37 can be confirmed based on, for example, a SEM (Scanning Electron Microscope) image, a TEM (Transmission Electron Microscope) image, or the like of the ink ribbon 3.

[0092] Although not described, a separation layer, intermediate layer, or other layer that assists in separating the first ink layer 36 from the second ink layer 37 may be formed between the first ink layer 36 and the second ink layer 37. The separation layer and intermediate layer may be made of, for example, a thermoplastic elastomer.

[0093] The laminating tape 76 includes a base layer 61, a first adhesive layer 62, a second adhesive layer 63, and a release layer 64. The first adhesive layer 62 is formed on an adhesive surface 65 of the base layer 61, and the second adhesive layer 63 is formed on a release surface 66 opposite the adhesive surface 65. The laminating tape 76 is attached to the printed matter 56 via the first adhesive layer 62. (4) Base material layer 61 Examples of the substrate layer 61 include films of resins such as polysulfone, polystyrene, polyamide, polyimide, polycarbonate, polypropylene, polyester, and triacetate, thin paper such as condenser paper and glassine paper, and cellophane. Among these, polyester films such as polyethylene terephthalate (PET) and polyethylene naphthalate are preferred in terms of mechanical strength, dimensional stability, heat treatment resistance, and price. The thickness of the substrate layer 61 can be set arbitrarily according to, for example, the specifications of the thermal transfer printer. For example, the thickness of the substrate layer 61 is 1 μm or more, and preferably 10 μm or more. For example, the thickness of the substrate layer 61 is 100 μm or less, and preferably 50 μm or less. For example, the thickness of the substrate layer 61 is 1 μm or more and 100 μm or less, and preferably 10 μm or more and 50 μm or less. For example, the thickness of the substrate layer 61 is 1 μm or more and 100 μm or less, and preferably 10 μm or more and 50 μm or less. (5) First adhesive layer 62 The first adhesive layer 62 is not particularly limited as long as it is an adhesive layer used to bond films together, and examples thereof include acrylic adhesives, rubber adhesives, and the like. The thickness of the first adhesive layer 62 is, for example, 1 μm or more, and preferably 10 μm or more. For example, the thickness of the first adhesive layer 62 is 100 μm or less, and preferably 50 μm or less. For example, the thickness of the first adhesive layer 62 is 1 μm or more and 100 μm or less, and preferably 10 μm or more and 50 μm or less. (6) Second adhesive layer 63 The second adhesive layer 63 is not particularly limited as long as it is an adhesive layer used to bond films together, and for example, the adhesive material used for the first adhesive layer 62 can be used. The thickness of the second adhesive layer 63 is, for example, 1 μm or more, and preferably 10 μm or more. For example, the thickness of the second adhesive layer 63 is 100 μm or less, and preferably 50 μm or less. For example, the thickness of the second adhesive layer 63 is 1 μm or more and 100 μm or less, and preferably 10 μm or more and 50 μm or less. (7) Release layer 64 The release layer 64 is peeled off from the laminating tape 76 when the transferred tape 55A is attached to an object, exposing the second adhesive layer 63. The transferred tape 55A can be attached to an object via the exposed second adhesive layer 63. An example of the release layer 64 is release paper coated with a release agent such as silicone.

[0094] As shown in FIG. 5C, the laminating tape 76 does not necessarily have to include the base layer 61.

[0095] According to the transferred tape 55A having the above layer configuration, the second ink layer 37 is covered with a transparent printer tape 2 (cover film) as shown in Fig. 7. This allows light 77 incident on the second ink layer 37 through the printer tape 2 to be refracted by the printer tape 2. As a result, when the second ink layer 37 (surface-side ink layer) is observed through the printer tape 2 from an oblique direction or a lateral direction, it is possible to prevent the end color of the first ink layer 36 hidden by the second ink layer 37 from being observed. <Transferred Tape 55B> 5B, the transferred tape 55B includes the printer tape 2 to which a portion of the ink ribbon 3 has been transferred, and a lamination tape 76 laminated to the printer tape 2. The lamination tape 76 may be referred to as a lamination film. Fig. 5B shows a cross section of a portion of the transferred tape 55B to which a laminate of the first ink layer 36 and the second ink layer 37 has been transferred as a first transfer layer 82, and omits a cross section of a portion of the transferred tape 55B to which the second ink layer 37 has been selectively transferred as a second transfer layer.

[0096] In the transferred tape 55B of this embodiment, the lamination tape 76 is attached to the printer tape 2 via a first adhesive layer 84, and has a transparent cover film 83 as an example of a transparent film that physically protects the first transfer layer 82 from the outside. Therefore, in the first transfer layer 82, the first ink layer 36 on the side closer to the cover film 83 is the front-side ink layer (the observation-side ink layer). As shown by the white arrow 60, a person can recognize the respective colors of the first ink layer 36 and the second ink layer 37 by the light that has passed through the cover film 83 and is reflected by the first ink layer 36 or the second ink layer 37.

[0097] Next, the layer structure of transferred tape 55B will be described in more detail.

[0098] The transferred tape 55B is formed by laminating the printer tape 2 and the laminating tape 76 together, as described above.

[0099] The printer tape 2 is formed by a base layer 80, a first transfer layer 82, a second adhesive layer 85, a release layer 86, and a printed matter 81. (1) Base material layer 80 Examples of the substrate layer 80 include films of resins such as polysulfone, polystyrene, polyamide, polyimide, polycarbonate, polypropylene, polyester, and triacetate, thin papers such as condenser paper and glassine paper, and cellophane. Among these, polyester films such as polyethylene terephthalate (PET) and polyethylene naphthalate are preferred from the viewpoints of mechanical strength, dimensional stability, heat treatment resistance, and price. The thickness of the substrate layer 80 can be set arbitrarily according to, for example, the specifications of the thermal transfer printer. For example, the thickness of the substrate layer 80 is 1 μm or more, and preferably 10 μm or more. For example, the thickness of the substrate layer 80 is 100 μm or less, and preferably 50 μm or less. For example, the thickness of the substrate layer 80 is 1 μm or more and 100 μm or less, and preferably 10 μm or more and 50 μm or less. For example, the thickness of the substrate layer 80 is 1 μm or more and 100 μm or less, and preferably 10 μm or more and 50 μm or less. (2) First transfer layer 82 The first transfer layer 82 includes a first ink layer 36 and a second ink layer 37 laminated in this order from the transparent cover film 83 side. The materials of the first ink layer 36 and the second ink layer 37 are the same as the materials of the first ink layer 36 and the second ink layer 37 of the transferred tape 55A.

[0100] In the transferred tape 55B, the first ink layer 36 is disposed closer to the transparent cover film 83 than the second ink layer 37. Therefore, unlike the transferred tape 55A in which the black color of the first ink layer 36 is recognized by transmitting light through the second ink layer 37, the black color of the first ink layer 36 can be recognized without transmitting light through the second ink layer 37. Therefore, as described above, it is not necessary to use a dye as a colorant for the second ink layer 37 in order to ensure transparency. In other words, in the transferred tape 55B, the second ink layer 37 may be colored only by a pigment.

[0101] Although not described, a separation layer, intermediate layer, or other layer that assists in separating the first ink layer 36 from the second ink layer 37 may be formed between the first ink layer 36 and the second ink layer 37. The separation layer and intermediate layer may be made of, for example, a thermoplastic elastomer.

[0102] On the other hand, the transferred tape 55B is different from the transferred tape 55A in that the first ink layer 36 is a front side ink layer (observation side ink layer). The front side ink layer of the transferred tape 55A is the second ink layer 37. Therefore, in the transferred tape 55B, the thickness of the first ink layer 36 is preferably the same as the thickness of the second ink layer 37 of the transferred tape 55A. That is, the thickness of the first ink layer 36 of the transferred tape 55B is, for example, 0.05 μm or more, preferably 1.0 μm or more. The thickness of the second ink layer 37 is, for example, 7.0 μm or less, preferably 5.0 μm or less. The thickness of the second ink layer 37 may be, for example, 0.05 μm or more and 7.0 μm or less, preferably 1.0 μm or more and 5.0 μm or less. (3) Second adhesive layer 85 The second adhesive layer 85 is not particularly limited as long as it is an adhesive layer used to bond films together, and examples thereof include acrylic adhesives, rubber adhesives, and the like. The thickness of the second adhesive layer 85 is, for example, 1 μm or more, and preferably 10 μm or more. For example, the thickness of the second adhesive layer 85 is 100 μm or less, and preferably 50 μm or less. For example, the thickness of the second adhesive layer 85 is 1 μm or more and 100 μm or less, and preferably 10 μm or more and 50 μm or less. (4) Peeling layer 86 The release layer 86 is peeled off from the printed matter 81 when the transferred tape 55B is attached to an object, exposing the second adhesive layer 85. The transferred tape 55B can be attached to the object via the exposed second adhesive layer 85. An example of the release layer 86 is release paper coated with a release agent such as silicone.

[0103] The laminating tape 76 includes a cover film 83 and a first adhesive layer 84 . (5) Cover Film 83 The cover film 83 can be made of the same material as the printer tape 2 of the transferred tape 55A. Therefore, the cover film 83 may be made of a material having the same refractive index as the printer tape 2 of the transferred tape 55A, and may also have the same thickness. Furthermore, the cover film 83 may be a non-stretched film that has not been stretched during the manufacturing process, or a stretched film that has been stretched by uniaxial stretching, biaxial stretching, or the like. Furthermore, the surface of the cover film 83 may be finished with a glossy finish, a matte finish, or the like. Furthermore, a release layer using silicone that protects the surface of the cover film 83 before use may be formed separately. These layers may conceptually be part of the cover film 83. (6) First adhesive layer 84 The first adhesive layer 84 is not particularly limited as long as it is an adhesive layer used to bond films together, and examples thereof include acrylic adhesives, rubber adhesives, and the like. The thickness of the first adhesive layer 84 is, for example, 1 μm or more, and preferably 10 μm or more. For example, the thickness of the first adhesive layer 84 is 100 μm or less, and preferably 50 μm or less. For example, the thickness of the first adhesive layer 84 is 1 μm or more and 100 μm or less, and preferably 10 μm or more and 50 μm or less.

[0104] Also, it is preferable that the total thickness of the first adhesive layer 84 and the cover film 83 is greater than the thickness of the first ink layer 36. In other words, the first adhesive layer 84 and the cover film 83 may each be thinner than the first ink layer 36 individually, as long as their combined thickness is thicker than the first ink layer 36. Furthermore, it is preferable that the total thickness of the first adhesive layer 84 and the cover film 83 is at least twice the thickness of the front-side ink layer (first ink layer 36).

[0105] The first adhesive layer 84 is interposed between the transferred tape 55B and the first transfer layer 82, and is a layer through which light passes when observing the printed pattern 44. Therefore, the first adhesive layer 84 is preferably transparent. The refractive index of the first adhesive layer 84 is, for example, 1.4 or more, preferably 1.5 or more, and more preferably 1.6 or more. The refractive index may be, for example, a refractive index measured by spectroscopic ellipsometry.

[0106] 8, the first ink layer 36 is covered with a transparent cover film 83 and a first adhesive layer 84. This allows light 87 incident on the first ink layer 36 through the cover film 83 to be refracted by the cover film 83 and the first adhesive layer 84. As a result, when the first ink layer 36 (surface-side ink layer) is observed through the cover film 83 from an oblique direction or a lateral direction, it is possible to prevent the end color of the second ink layer 37 hidden by the first ink layer 36 from being observed.

[0107] The embodiments of the present disclosure are illustrative in all respects and should not be construed as limiting, and are intended to include modifications in all respects.

[0108] The following characteristics can be extracted from the description of this specification and the drawings.

[0109] [Appendix 1-1] A transferred film in which a transparent film, a laminate of a first ink layer and a second ink layer having a color different from that of the first ink layer, and a base layer are laminated in this order, A transferred film, wherein the first ink layer and the second ink layer are transfer layers transferred using an ink ribbon including a laminate of the first ink layer and the second ink layer.

[0110] [Appendix 1-2] The transferred film described in Appendix 1-1, wherein the transfer layer is formed by thermal melt transfer.

[0111] [Appendix 1-3] the laminate of the first ink layer and the second ink layer includes a front side ink layer close to the transparent film and a back side ink layer on the opposite side thereof, The transferred film according to claim 1-1 or 1-2, wherein the transparent film is thicker than the front-side ink layer.

[0112] [Appendix 1-4] The transferred film according to any one of Appendix 1-1 to Appendix 1-3, wherein the refractive index of the transparent film measured by spectroscopic ellipsometry is 1.4 or more.

[0113] [Appendix 1-5] a printed matter in which the transparent film, the second ink layer, and the first ink layer are laminated in this order; A transferred film described in any one of Appendix 1-1 to Appendix 1-4, comprising a first adhesive layer laminated to the printed matter on the side of the first ink layer, and an attachment layer including the base material layer attached to the printed matter via the first adhesive layer.

[0114] [Appendix 1-6] The transferred film described in Appendix 1-5, wherein the bonding layer further includes a second adhesive layer laminated to the base layer on the opposite side of the first adhesive layer, and a release layer laminated to the base layer via the second adhesive layer.

[0115] [Appendix 1-7] an attachment layer including the transparent film and a first adhesive layer laminated on a surface of the transparent film; The transferred film described in any one of Appendix 1-1 to Appendix 1-4 includes a printed matter including the first ink layer attached to the transparent film via the first adhesive layer, the second ink layer laminated in sequence on the first ink layer, the base layer, and the second adhesive layer.

[0116] [Appendix 1-8] The transferred film described in Appendix 1-7, wherein the printed matter further includes a release layer laminated to the base layer via the second adhesive layer.

[0117] [Appendix 1-9] The transferred film according to any one of claims 1-1 to 1-8, which is a transferred tape formed into a tape shape.

[0118] [Appendix 1-10] forming a printed matter having a transfer layer by transferring an ink ribbon including a laminate of a first ink layer and a second ink layer having a color different from that of the first ink layer onto a first surface of a transparent film having a first surface and a second surface, with the second ink layer facing the first surface; A method for producing a transferred film, comprising: a step of attaching an attachment layer, the attachment layer including a first adhesive layer and a base material layer, to the printed matter by adhering the first adhesive layer to the transfer layer.

[0119] [Appendix 1-11] forming a printed matter having a transfer layer by transferring an ink ribbon including a laminate of a first ink layer and a second ink layer having a color different from that of the first ink layer onto a first surface of a base layer having a first surface and a second surface, with the second ink layer facing the first surface; A method for producing a transferred film, comprising: a step of attaching an attachment layer including a first adhesive layer and a transparent film to the printed matter by adhering the first adhesive layer to the transfer layer. EXAMPLES

[0120] The present disclosure will be further described below based on experimental examples, but the configuration of the present disclosure is not limited to these examples.

[0121] [Black coloring layer coating material (1)] Each component shown in Table 1 below was dissolved in a mixed solvent of toluene and methyl ethyl ketone (MEK) in a mass ratio of 1 / 4 to prepare a coating material (1) for black colored layer with a solid content concentration of 22.5 mass%. The ratio of the active ingredient in the acrylic adhesive was 80 mass parts per 100 mass parts of epoxy resin.

[0122] [Table 1]

[0123] The components in the table are as follows:

[0124] Epoxy resin: JER1007 manufactured by Mitsubishi Chemical Corporation [basic solid type, softening point (ring and ball method): 128°C, number average molecular weight Mn: approximately 2900] Acrylic adhesive: AS-665 manufactured by Lion Specialty Chemicals Co., Ltd. [Solid content: 40% by mass] Tackifier: Terpene phenol resin, YS Polystar T80 (softening point: 80±5°C) manufactured by Yasuhara Chemical Co., Ltd. Carbon black: MA100 powder manufactured by Mitsubishi Chemical Corporation (LFF, DBP absorption capacity: 100 cm 3 / 100g] [Coating material for red colored layer (1)] Each component shown in Table 2 below was dissolved in a mixed solvent of toluene and methyl ethyl ketone (MEK) in a mass ratio of 1 / 4 to prepare a red colored layer coating material (1) having a solid content concentration of 28 mass %.

[0125] [Table 2]

[0126] The components in the table are as follows:

[0127] Epoxy resin: JER1004 manufactured by Mitsubishi Chemical Corporation [basic solid type, softening point (ring and ball method): 97°C, number average molecular weight Mn: approximately 1650] Low melting point wax: Toyochem Co., Ltd.'s Carnauba wax No. 2 powder (melting point: 80-86°C) Red colorant: Orient Chemical Industry Co., Ltd.'s red dye VALIFAST RED 1320 (CI BASIC RED 1 and onium salt of azo dye) [Experimental Examples 1-9] (1) Manufacture of ink ribbons (thermal transfer recording media) First, a PET film having a thickness of 4.5 μm was prepared as a substrate layer. Next, a silicone resin having a solid content per unit area of ​​0.1 g / m was applied to the surface (back side) of the substrate layer opposite to the surface on which the transfer layer was to be formed. 2 Next, the previously prepared black colored layer coating material (1) was applied to the surface of the base layer and then dried to form a back layer having a solid content of 2.5 g / m2 per unit area. 2 The thickness of the black colored layer was 2.5 μm. Next, the previously prepared red colored layer coating material (1) was applied onto the black colored layer and then dried to form a black colored layer having a solid content of 2.5 g / m2 per unit area. 2 The ink ribbon was manufactured by forming a red colored layer having a thickness of 2.5 μm. The composition of each layer of the ink ribbon obtained in Experimental Examples 1 to 9 is as shown in Tables 4 to 6 below. In Experimental Example 2, the solid content per unit area was 7 g / m 2A red colored layer having a thickness of 7 μm was formed. (2) Manufacturing of transferred film <Experimental Example 1> The ink ribbon obtained above was wound into a roll and set in a thermal transfer printer (a prototype printer manufactured by Brother Industries, Ltd.). The main specifications of the thermal transfer printer are as follows: <Resolution> 300dpi line thermal head <Resistance of heating element> 1830Ω <Transfer load> 30N / 2inch <Transport speed> 20mm / sec <Peeling distance> 110mm Next, in an environment with an outside temperature of 25°C, the energy value applied to the thermal head, which was preset in the thermal transfer printer, was set to 100 (low temperature, black). Then, a barcode was recorded on the surface of a PET film [Lumirror (registered trademark) #6-S10, manufactured by Toray Industries, Inc., thickness 6 μm, refractive index 1.66] as a transparent base film, at a printing speed of 5 inch / sec. After recording, a lamination film having an adhesive layer [polyester film (white, glossy), FR1415-50PET manufactured by Lintec Corporation] was laminated onto the base film so as to cover the barcode. As a result, a transferred film was obtained in which a laminate of a red colored layer and a black colored layer was formed as a transfer layer, with the red colored layer facing the base film. In the transferred film, the base film functions as a cover film that covers the surface side of the transfer layer. The refractive index of the PET film was measured using a rotational compensator type high-speed spectroscopic ellipsometer M-2000 (registered trademark) manufactured by JA Woollam Japan Co., Ltd. The incident angle during measurement was set to 50° to 70°.

[0128] <Experimental Example 2> A transferred film was prepared in the same manner as in Experimental Example 1, except that an ink ribbon with a red colored layer having a thickness of 7 μm was used.

[0129] <Experimental Example 3> A transferred film was prepared in the same manner as in Experimental Example 1, except that a 25 μm thick PE film (Rix (registered trademark) Film L4102, refractive index 1.53, manufactured by Toyobo Co., Ltd.) was used as a transparent base film (cover film).

[0130] <Experimental Example 4> A transferred film was prepared in the same manner as in Experimental Example 1, except that a 25 μm thick PC film (Teijin Limited, Pure Ace (registered trademark) Grade D, refractive index 1.58) was used as a transparent base film (cover film).

[0131] <Experimental Example 5> A transferred film was prepared in the same manner as in Experimental Example 1, except that a 14 μm thick biaxially oriented polystyrene film (OPS (registered trademark) film, refractive index 1.47, manufactured by Asahi Kasei Corporation) was used as a transparent substrate film (cover film).

[0132] <Experimental Example 6> A transferred film was prepared in the same manner as in Experimental Example 1, except that a 20 μm thick PTFE film (Nitto Denko Corporation's Nitoflon (registered trademark) No. 920UL, refractive index 1.35) was used as a transparent base film (cover film).

[0133] <Experimental Example 7> The ink ribbon obtained above was wound into a roll and set in a thermal transfer printer with the same specifications as above. Next, in an environment with an outside temperature of 25°C, the energy value applied to the thermal head, which was preset in the thermal transfer printer, was set to 100 (low temperature, black). Then, a barcode was recorded on the surface of a label material for variable information printing [polyester film (white, glossy), FR1415-50 manufactured by Lintec Corporation] at a printing speed of 5 inch / sec. After recording, a lamination film made of a transparent PET film [Lumirror (registered trademark) #2-F51 manufactured by Toray Industries, Inc., thickness 2 μm, refractive index 1.57] with an adhesive layer of 2 μm thickness [Quickmaster (registered trademark) SPS-1090NT manufactured by DIC Corporation, refractive index 1.50] was laminated on the label material so as to cover the barcode. As a result, a transferred film was obtained in which a laminate of a red colored layer and a black colored layer was formed as a transfer layer with the black colored layer facing the base film side. In the transferred film, the lamination film functions as a cover film that covers the surface side of the transfer layer. The refractive index of the PET film was measured using a rotary compensator type high-speed spectroscopic ellipsometer M-2000 (registered trademark) manufactured by JA Woollam Japan. The incident angle during measurement was set to 50° to 70°.

[0134] <Experimental Example 8> A transferred film was prepared in the same manner as in Experimental Example 7, except that a 4.5 μm thick adhesive layer (Quickmaster (registered trademark) SPS-1090NT, refractive index 1.50, manufactured by DIC Corporation) was used as the adhesive layer of the lamination film (cover film).

[0135] <Experimental Example 9> A transferred film was prepared in the same manner as in Experimental Example 7, except that the lamination film was not laminated to the label material. (2) Evaluation (2-1) Oblique observation As shown in Figure 9, the angle θ of the observation point with respect to the surface of the transferred film obtained in Experimental Examples 1 to 9 was changed from 10° to 90°, and the change in color of the printed matter that could be visually confirmed was confirmed. The evaluation criteria for oblique observation are as follows. The results are shown in Tables 3 and 4 below. ◯: Even when the angle θ is 10°, the color of the ink layer on the front side appears to be printed. Δ: The angle θ is less than 45°, and the edge color of the ink layer covered by the front-side ink layer is visible. ×: The angle θ is less than 70°, and the edge color of the ink layer covered by the surface-side ink layer is visible.

[0136] [Table 3]

[0137] [Table 4]

[0138] From a comparison between Experimental Examples 1 to 8 and Experimental Example 9, when a transparent cover film covering the surface side ink layer was provided, the edge color of the ink layer covered by the surface side ink layer was not confirmed at least when the angle θ was 45° or more. Also, from a comparison between Experimental Example 1 and Experimental Example 2, it was found that even when a cover film was provided, a higher evaluation could be obtained if the thickness of the cover film was greater than the thickness of the surface side ink layer. On the other hand, from the result of Experimental Example 8, it was found that even if the thickness of the cover film was less than the thickness of the surface side ink layer, the effect of suppressing edge color could be increased as long as the total thickness of the cover film and the adhesive layer was at least twice the thickness of the surface side ink layer.

[0139] In addition, from the results of Experimental Examples 1 and 8 and Experimental Examples 3 to 6, it was found that if the cover film is a PET film, the total thickness of the cover film and adhesive layer can be made less than 10 μm while fully realizing the effect of suppressing edge color. Therefore, in Experimental Examples 1 and 8, the transferred film can be successfully attached even to complex curved surfaces. [Explanation of symbols]

[0140] 2: Printer tape 3: Ink ribbon 35: Base material layer 36: First ink layer 37: Second ink layer 42 :1st part 43:Second part 44: Printing pattern 45: Red pattern 46: Black pattern 48: Base material layer 55: Transferred tape 55A: Transferred tape 55B: Transferred tape 56: Printed matter 57: First transfer layer 61: Base material layer 62: 1st adhesive layer 63:Second adhesive layer 64: Peeling layer 76: Laminating tape 80: Base material layer 81: Printed matter 82: First transfer layer 83: Cover film 84: 1st adhesive layer 85:Second adhesive layer 86: Peeling layer

Claims

1. A transferred film in which a transparent film, a laminate of a first ink layer and a second ink layer having a color different from that of the first ink layer, and a base layer are laminated in this order, A transferred film, wherein the first ink layer and the second ink layer are transfer layers transferred using an ink ribbon including a laminate of the first ink layer and the second ink layer.

2. The transferred film according to claim 1 , wherein the transfer layer is formed by thermal melt transfer.

3. the laminate of the first ink layer and the second ink layer includes a front side ink layer close to the transparent film and a back side ink layer on the opposite side thereof, The transferred film according to claim 1 , wherein the transparent film is thicker than the front-side ink layer.

4. The transferred film according to any one of claims 1 to 3, wherein the refractive index of the transparent film measured by spectroscopic ellipsometry is 1.4 or more.

5. a printed matter in which the transparent film, the second ink layer, and the first ink layer are laminated in this order; The transferred film according to any one of claims 1 to 3, comprising a first adhesive layer laminated to the printed matter on the side of the first ink layer, and an attachment layer including the base material layer attached to the printed matter via the first adhesive layer.

6. The transferred film of claim 5, wherein the bonding layer further includes a second adhesive layer laminated to the base layer on the opposite side of the first adhesive layer, and a release layer laminated to the base layer via the second adhesive layer.

7. an attachment layer including the transparent film and a first adhesive layer laminated on a surface of the transparent film; The transferred film according to any one of claims 1 to 3, comprising: the first ink layer attached to the transparent film via the first adhesive layer; the second ink layer laminated in sequence on the first ink layer; and a printed matter comprising the base material layer and a second adhesive layer.

8. The transferred film according to claim 7 , wherein the printed matter further includes a release layer laminated to the base layer via the second adhesive layer.

9. The transferred film according to any one of claims 1 to 3, which is a transferred tape formed into a tape shape.

10. forming a printed matter having a transfer layer by transferring an ink ribbon including a laminate of a first ink layer and a second ink layer having a color different from that of the first ink layer onto the first surface of a transparent film having a first surface and a second surface, with the second ink layer facing the first surface; A method for manufacturing a transferred film, comprising: a step of attaching an attachment layer including a first adhesive layer and a base material layer to the printed matter by adhering the first adhesive layer to the transfer layer.

11. forming a printed matter having a transfer layer by transferring an ink ribbon including a laminate of a first ink layer and a second ink layer having a color different from that of the first ink layer onto a first surface of a base layer having a first surface and a second surface, with the second ink layer facing the first surface; A method for manufacturing a transferred film, comprising: a step of attaching an attachment layer including a first adhesive layer and a transparent film to the printed matter by adhering the first adhesive layer to the transfer layer.

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