WO2006003985A1 - 磁気記録媒体及び磁気記録媒体の製造方法 - Google Patents
磁気記録媒体及び磁気記録媒体の製造方法 Download PDFInfo
- Publication number
- WO2006003985A1 WO2006003985A1 PCT/JP2005/012064 JP2005012064W WO2006003985A1 WO 2006003985 A1 WO2006003985 A1 WO 2006003985A1 JP 2005012064 W JP2005012064 W JP 2005012064W WO 2006003985 A1 WO2006003985 A1 WO 2006003985A1
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- WO
- WIPO (PCT)
- Prior art keywords
- magnetic recording
- pattern
- layer
- recording layer
- transfer
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06187—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with magnetically detectable marking
- G06K19/06196—Constructional details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/80—Card carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
Definitions
- the present invention relates to a magnetic recording medium having a pattern formed by laminating a plurality of layers including a base material layer and a magnetic recording layer and having an image that can be identified from the magnetic reading side of the magnetic recording layer, a method for producing the magnetic recording medium, And a transfer laminate used in the method of manufacturing the magnetic recording medium.
- a card-like magnetic recording medium in which a layer including a magnetic recording medium layer is laminated on a base material layer for a card such as a credit card or a bank card, and a pattern that can be identified from the magnetic reading side on the magnetic stripe portion
- the present invention relates to a magnetic recording medium on which the magnetic recording medium is formed, a method for producing the magnetic recording medium, and a transfer laminate used in the method for producing the magnetic recording medium.
- a colored layer is formed on the magnetic stripe formed on the card substrate.
- a magnetic stripe with a pattern on which a pattern is further formed is also produced.
- a peeling layer and a protective layer or a protective layer having a peeling function are formed on a temporary transfer support, and the pattern is placed on the layer.
- a colored layer, a magnetic recording layer, and a heat-sensitive adhesive layer that conceal the hue of the magnetic recording layer are sequentially formed to produce a laminate, and the laminate is cut to a desired width to form a magnetic stripe.
- a transfer laminate for formation is obtained.
- the transfer material of the transfer laminate for magnetic stripe formation obtained in this way is transferred to the oversheet of the card base, and hot pressed together with the center core and the oversheet on the opposite side, and the magnetic stripe is formed on the oversheet.
- a pattern with embedded transfer material Obtain a magnetic stripe card (see Figure 1).
- the magnetic stripe with a pattern formed in this way has an area where the pattern is formed on the magnetic recording reading side of the magnetic recording layer. Since the spacing, which is the distance between the magnetic head and the magnetic recording layer, changes, the reproduction output fluctuates, and as a result, there is a tendency to increase the possibility of errors when reading information.
- a protective layer is further formed thereon, so that lamination is performed at one time in the transfer step. The process is divided and the production efficiency decreases.
- a fluorescent pattern using a fluorescent agent cannot be visually recognized by ultraviolet rays contained in sunlight or room light, but can only be visually recognized as a fluorescent pattern by ultraviolet irradiation by a dedicated ultraviolet irradiation device. Necessary, and this is done to determine the authenticity of the card.
- a concealing layer is formed on the area where the fluorescent pattern is formed, and the fluorescent pattern is recognized only when the high-intensity ultraviolet ray is irradiated by a dedicated irradiation device (see Patent Document 3). ).
- the film thickness of these concealing layers is usually a thin film of several m / m or less in order to suppress a decrease in reproduction output. For this reason, it was difficult to completely eliminate the steps of the fluorescent pattern. Therefore, even if the fluorescent pattern cannot be visually recognized by sunlight or room light due to the concealment layer, a step that is formed by the fluorescent pattern and cannot be completely eliminated remains, so the presence of the pattern is visually recognized by the reflected light. There was an inconvenience. Furthermore, such remaining steps cause fluctuations in the reproduction output, resulting in a problem that the signal quality is lowered.
- a method of manufacturing a magnetic card having a pattern using a fluorescent agent a release layer, an overcoat layer, a pattern printing layer, a concealing layer, and a fluorescent pattern are formed on a temporary transfer support.
- a manufacturing method is described in which each layer is sequentially laminated like a region to form a transfer material for forming a magnetic stripe, and this is transferred to a card substrate on which a magnetic recording layer has been formed in advance through a transfer step. (See Patent Document 4).
- the fluorescent agent that has permeated the hiding layer after the transfer receives ultraviolet rays and emits light.
- a conventional magnet with a pattern that forms a pattern on a magnetic stripe portion through a transfer process there are the following disadvantages. That is, the printing of the pattern to be formed on the transfer laminate is usually carried out after the formation of the release layer, the protective layer or the protective layer having a release function on the transfer substrate, and then the colored layer, the magnetic recording layer, The heat-sensitive adhesive layers are sequentially laminated.
- the pattern must be printed at the initial stage of the manufacturing process of the transfer laminate for forming the magnetic stripe, and more processes and time are required after the pattern is determined and manufactured.
- a layered product for transfer is produced. Therefore, if it is necessary to correct the pattern after the transfer laminate for forming the magnetic stripe with the pattern is completed, the pattern cannot be corrected in a short time, and the pattern correction is greatly delayed. And cause a decline in efficiency.
- Patent Document 1 Japanese Patent Application Laid-Open No. 59-168933
- Patent Document 2 JP 2000-155937 A
- Patent Document 3 Japanese Patent Laid-Open No. 2000-002160
- Patent Document 4 JP-A-9-309287
- An object of the present invention is to have a pattern that is identifiable from the surface on the magnetic recording reading side of a magnetic recording medium and has good stability over time, and no step is generated in the pattern forming portion as the pattern is formed. Therefore, it is an object of the present invention to provide a magnetic recording medium in which fluctuations in reproduction output caused by the steps and obstacles to the function that the picture should originally perform do not occur.
- an object of the present invention is a method of manufacturing a magnetic recording medium for producing a magnetic recording medium having a pattern that can be identified from the surface on the magnetic recording reading side through a transfer process, and no step is generated in the pattern forming portion. Therefore, the reproduction output does not fluctuate, the manufacturing efficiency is good, and the process from the pattern formation to the production of the magnetic recording medium is short. It is an object of the present invention to provide a method of manufacturing a magnetic recording medium that can respond quickly.
- a further object of the present invention is a transfer laminate used in the transfer step, which has a pattern capable of identifying the surface force on the magnetic recording layer side, and a step is formed in the pattern forming portion by the formation of the pattern. It is an object of the present invention to provide a transfer laminated body that can efficiently produce a magnetic recording medium having no magnetic recording medium.
- the present invention has a pattern formed with a pattern forming agent in a laminate formed of a plurality of layers including a base layer and a magnetic recording layer, and the pattern is the base of the laminate.
- the pattern forming agent is distributed in the film thickness direction of the laminate, and the magnetic layer is formed in a region on the reading side from the center of the magnetic recording layer in the laminate.
- a magnetic recording medium characterized by having a distribution having a concentration gradient that gradually decreases from the central portion of the recording layer toward the magnetic recording reading side.
- the present invention has at least one magnetic recording layer on a temporary transfer support, and a pattern is formed on the surface of the magnetic recording layer opposite to the surface in contact with the temporary transfer support by a pattern forming agent. Formed a transfer material,
- a transfer body is formed by transferring the transfer material from the transfer temporary support onto the base material layer,
- the stacked body has a region having a concentration gradient that gradually decreases from the center of the magnetic recording layer toward the magnetic recording reading side in the region on the reading side from the center of the magnetic recording layer in the stacked body.
- a laminate formed by a plurality of layers including a base layer and a magnetic recording layer has a pattern formed by a pattern forming agent, and the pattern is a surface of the laminate in a direction opposite to the base layer.
- the pattern forming agent is distributed in the film thickness direction of the laminated body, and in the area on the reading side from the central part of the magnetic recording layer in the laminated body, the pattern forming agent is magnetically separated from the central part of the magnetic recording layer.
- a method for manufacturing a magnetic recording medium is provided, characterized in that the magnetic recording medium is distributed with a region having a concentration gradient that gradually decreases in the direction of the recording / reading side. Provide.
- the present invention has at least one magnetic recording layer on the temporary transfer support, and a pattern is formed on the surface of the magnetic recording layer opposite to the surface in contact with the temporary transfer support.
- a transfer material with a pattern formed by the agent is formed,
- a laminate formed by a plurality of layers including a base layer and a magnetic recording layer has a pattern formed by a pattern forming agent, and the pattern is a surface of the laminate in a direction opposite to the base layer.
- the pattern forming agent is distributed in the film thickness direction of the laminated body, and in the area on the reading side from the central part of the magnetic recording layer in the laminated body, the pattern forming agent is magnetically separated from the central part of the magnetic recording layer.
- the present invention provides a transfer material having at least one magnetic recording layer on a temporary transfer support
- a laminate is formed by transferring the transfer material onto the pattern of the base material layer on which the pattern is formed by the pattern forming agent.
- the stacked body has a region having a concentration gradient that gradually decreases from the center of the magnetic recording layer toward the magnetic recording reading side in the region on the reading side from the center of the magnetic recording layer in the stacked body.
- a laminate formed by a plurality of layers including a base layer and a magnetic recording layer has a pattern formed by a pattern forming agent, and the pattern is a surface of the laminate in a direction opposite to the base layer.
- the pattern forming agent is distributed in the film thickness direction of the laminate, In the layered body, the region on the reading side from the center of the magnetic recording layer is distributed with a region having a concentration gradient that gradually decreases from the center of the magnetic recording layer toward the reading side of the magnetic recording.
- the present invention provides a transfer laminate, wherein a magnetic recording layer and a transfer material having a pattern formed of a pattern forming agent on the magnetic recording layer are formed on a temporary transfer support. I will provide a.
- the pattern forming agent for forming a pattern is distributed in the film thickness direction of the laminate, and magnetic recording is read from the center of the magnetic recording layer in the laminate.
- the region on the side has a concentration gradient that gradually decreases from the center of the magnetic recording layer in the direction toward the magnetic recording reading side.
- the pattern forming agent does not exist at a high concentration in a specific area on the magnetic recording layer or does not localize. There will be no fluctuations in the playback output due to the level difference.
- the pattern forming agent for a pattern formed on either or both of the magnetic recording layer of the transfer material having the magnetic recording layer and the substrate is based on the transfer material.
- the center of the magnetic recording layer is diffused in the transfer material and the center of the magnetic recording layer in the region from the center of the magnetic recording layer to the reading side in the laminate. It is distributed with a region having a concentration gradient that gradually decreases from the portion toward the magnetic recording reading side, and can be identified from the surface of the laminate. For this reason, there is no step corresponding to the pattern forming portion, and there is no fluctuation in reproduction output due to the step.
- the transfer laminate of the present invention has a magnetic recording layer and a pattern formed on the magnetic recording layer on the temporary transfer support, the pattern is transferred to the substrate after transfer to the substrate. It will be placed between the materials. Due to the diffusion of the pattern forming agent before or after transfer, the pattern forming agent is distributed in the film thickness direction of the laminate, and in the region on the reading side from the center of the magnetic recording layer in the laminate. A region having a concentration gradient that gradually decreases from the center of the magnetic recording layer toward the magnetic recording reading side. Cloth. For this reason, there is no step corresponding to the pattern forming portion, and there is no fluctuation in the reproduction output caused by the step.
- the region where the pattern is formed can be set in the transfer material of the transfer laminate and on the magnetic recording layer or the substrate. It can be formed separately from the final stage of the production process of the laminate for transfer or separately from the laminate for transfer. For this reason, parts other than the picture of the laminate for transfer can be prepared in advance, and the picture can be formed at the final stage after the picture is confirmed, and the process from picture formation to card production can be shortened. It is possible to respond quickly to changes.
- the pattern or fluorescent pattern formed in the method for producing a magnetic recording medium of the present invention is basically a colorant or fluorescent agent conventionally used when forming a pattern on a magnetic recording medium. Can be used as is.
- FIG. 1 is an enlarged cross-sectional view of a conventional magnetic card manufactured with a transfer laminate for forming a magnetic stripe.
- FIG. 2 is a cross-sectional view showing one embodiment of a transfer laminate used in the method for producing a magnetic recording medium of the present invention.
- FIG. 3 is a cross-sectional view conceptually showing how a pattern forming agent diffuses when the transfer laminate is aged.
- FIG. 4 is a cross-sectional view conceptually showing a case where a colored layer portion is formed on the oversheet base material side in one embodiment of the method for producing a magnetic recording medium of the present invention.
- FIG. 5 is a cross-sectional view showing one embodiment of a magnetic card manufactured by the method for manufacturing a magnetic recording medium of the present invention.
- FIG. 6 is a conceptual diagram showing a transfer laminate for forming a magnetic stripe produced in Examples 1 to 4 and a pattern formed on the transfer laminate.
- FIG. 7 is a schematic view showing a region for forming a picture in Example 5 and Example 6.
- FIG. 8 is a schematic view showing one embodiment of a magnetic card on which a pattern is formed using the method for producing a magnetic recording medium of the present invention.
- FIG. 9 is a diagram showing an example of a process for manufacturing a magnetic card using the method for manufacturing a magnetic recording medium of the present invention.
- FIG. 10 is a diagram showing another example of a process for manufacturing a magnetic card using the method for manufacturing a magnetic recording medium of the present invention.
- FIG. 11 is a diagram showing a conventional manufacturing method of a magnetic card having a magnetic recording layer and a pattern. Explanation of symbols
- Pattern forming agent diffusion preventing layer 2: Pattern forming agent diffusion region, 3: Colored layer, 4: Magnetic recording layer, 5: Thermal adhesive layer, 6: Oversheet, 7: Center core, 8: Picture part on card, 9: Temporary support for transfer, 10: Picture formation part
- the magnetic recording medium of the present invention has a pattern formed by a pattern forming agent in a laminate formed of a plurality of layers including a base material layer and a magnetic recording layer, and the pattern is the above-described laminate of the laminate. It is distinguishable from the surface opposite to the base material layer.
- the substrate layer of the present invention has a sheet shape or a plate shape, and examples of the material include plastics such as vinyl chloride, nylon, cellulose diacetate, and polyethylene terephthalate, and paper such as synthetic paper and cloth paper. In addition to these, any material having the strength and rigidity necessary to form a laminate can be used without particular limitation.
- various materials usually used as a material for forming various patterns formed on a magnetic recording medium for imparting functionality, design, etc. are used. I can do it. They may be those that form visually distinguishable patterns such as colorants and night paint materials, and can be identified by the use of light sources and detectors such as fluorescent agents and infrared ink materials. It may be something that forms a picture. Alternatively, it can be identified using elements, compounds, etc. that can only be detected using a specific detection device. You may form the pattern which becomes separable.
- the fluorescent agent is distributed in the thickness direction of the magnetic recording medium, and the magnetic recording medium is located in the region on the reading side from the center of the magnetic recording layer. It is distributed with a region having a concentration gradient that gradually decreases from the center of the recording layer toward the magnetic recording reading side. For this reason, for example, the fluorescent agent does not localize on the surface layer portion of the magnetic card, and a step does not occur in the place where the pattern is provided as described above. Therefore, even if a concealing layer covering the surface layer portion is not particularly provided, the presence of the fluorescent pattern itself and its corresponding location and contents cannot be identified by sunlight or room light without ultraviolet irradiation. Therefore, it is possible to prevent the counterfeit prevention information and identification information from being easily known from the print location and the print contents.
- the pattern forming agent is distributed in the film thickness direction of the laminate, and the pattern forming agent is a central portion of the magnetic recording layer in a region on the reading side from the central portion of the magnetic recording layer in the laminate.
- the region having a concentration gradient which gradually decreases from the magnetic recording reading side to the magnetic recording reading side is distributed.
- the “magnetic recording / reading side” refers to the side on which the magnetic head for recording / reproduction contacts the assumed magnetic recording medium.
- Such a distribution can be achieved by distributing the pattern forming agent on the magnetic recording layer with a high concentration near the surface of the laminate, or locally near the surface of the laminate, as in the pattern conventionally formed in magnetic recording media. In other words, it cannot be achieved by the method of forming a pattern by making it exist.
- Such a pattern forming agent distribution according to the present invention can be formed by, for example, forming a pattern and then sequentially diffusing the pattern forming agent into adjacent layers by thermal diffusion. It can also be formed by eroding the dancing layer with the solvent of the pattern forming paint.
- a method using thermal diffusion is preferable in terms of ease of control and freedom in selecting a resin for forming a pattern forming agent or a laminate.
- Thermal diffusion is basically isotropic, although the diffusion speed varies depending on the layers that make up the laminate, and the direction in which the concentration in the laminate decreases from the region where the pattern was first formed. Gradually the pattern forming agent diffuses. Therefore, the distribution of the pattern forming agent in the laminate is roughly determined by the position in the laminate that forms the pattern.
- the magnetic recording layer is sandwiched between the magnetic recording layers. It is only necessary to form a picture on the layer located on the opposite side of the reading side or on the magnetic recording layer.
- the pattern forming agent diffuses isotropically to form a pattern that can be identified by the diffused pattern forming agent on the magnetic recording reading side.
- the pattern-forming agent diffuses in the direction perpendicular to the film thickness direction, but the film thickness is so thin that when the pattern is identified, there will be no diffusion that will make the pattern unclear.
- a plurality of layers including a magnetic recording layer are formed on a transfer temporary support, and the transfer temporary support is sandwiched between the magnetic recording layers of the transfer temporary support.
- a pattern is formed by a pattern forming agent on the magnetic recording layer on the opposite side or the surface in contact with the transfer temporary support, and the transfer material is removed from the transfer temporary support.
- a layered product is formed by transfer onto the material. After that, the layered product is located on the reading side from the center of the magnetic recording layer in the layered body.
- the pattern forming agent is distributed in the film thickness direction of the transfer material.
- the printed pattern can be identified from the direction of the magnetic recording reading side.
- the pattern forming agent does not localize on the card surface, and the formation of the pattern does not change the spacing, which is the distance between the magnetic head and the magnetic recording layer. Absent.
- the transfer material may have a plurality of magnetic recording layers, and a pattern may be formed between the plurality of magnetic recording layers.
- one or more layers other than the magnetic recording layer may be provided at a position opposite to the temporary transfer support with the magnetic recording layer interposed therebetween.
- a pattern may be formed between the magnetic recording layer and the time recording layer, or between two or more layers other than the magnetic recording layer.
- a colored layer that conceals the hue of the magnetic recording layer is formed on the magnetic reading side of the magnetic recording layer. You can. Further, in order to improve the adhesive force with the substrate when forming the laminate through the transfer step, a heat-sensitive adhesive layer can be formed at a position in contact with the substrate. Furthermore, in order to prevent the pattern forming agent from being exposed to the surface layer of the magnetic recording medium and adhering to other articles by contact, a pattern forming agent diffusion preventing layer should be used as the outermost layer on the magnetic reading side of the magnetic recording layer. Power S can be.
- the substrate has a magnetic recording layer and a colored layer in this order
- the pattern forming agent has a region having a concentration gradient that gradually decreases toward the recording reading side, and is distributed to the magnetic recording layer and the colored layer.
- the magnetic recording media that are used have very high discrimination and design because the pattern is identified along with the background color of the colored layer.
- the magnetic recording medium of the present invention forms an identifiable pattern by diffusing the pattern forming agent from the central portion of the magnetic recording layer toward the magnetic recording reading side before or after the transfer of the transfer material.
- a diffusion region in which the pattern forming agent is diffused and retained in an identifiable manner is required. This region basically corresponds to the portion of the layer laminated toward the magnetic recording reading side of the pattern where the pattern forming agent can diffuse, so that the pattern in the thickness direction of the magnetic recording medium Depends on the formation location.
- the diffusion region may be a colored layer, or may be a colored layer, a magnetic recording layer, and a heat-sensitive adhesive layer. Is possible.
- the total film thickness of the laminate positioned in the magnetic recording reading direction of the pattern corresponding to the diffusion region is preferably about 2 to 50 xm, excluding the film thickness of the pattern forming agent diffusion prevention layer described later. More preferably, it is about ⁇ 20 xm.
- the pattern can be formed at any position as long as it is between the magnetic recording layer and the base material when the laminate is formed on the base material. Therefore, when a laminate is formed through a transfer process, the pattern is magnetically transferred in the transfer material on the temporary transfer support.
- the recording layer can be laminated at any position on the opposite side of the temporary transfer support. It is preferable that the process of forming the pattern forming layer, where design changes are frequently made, be at the last possible part of the process of making a laminate. For example, the pattern is formed on the magnetic stripe of a magnetic card.
- the pattern forming layer is formed on the substrate side to which the magnetic stripe is transferred.
- the transfer laminate for a solid magnetic stripe without printing a pattern in advance, as soon as the design of the magnetic card including the magnetic stripe pattern is determined, the uppermost layer of the transfer laminate or It is possible to manufacture a magnetic card with a magnetic stripe with a pattern in a short period of time due to the ability to print a pattern on a card base, and then produce the card through a transfer process and a hot-pressing process. .
- the transfer material is heated in the state of a transfer laminate before transfer, or is transferred to a substrate to form a magnetic recording medium and then heated by heat. You can also.
- the magnetic recording medium is a magnetic card
- the pattern forming agent can be diffused in the pressure pressing process.
- the conditions for diffusion of the pattern forming agent are the temperature, heating time, and amount of the pattern forming agent used, taking into account the ease of diffusion of the pattern forming agent and the type and Tg of the resin used in the stack. Etc. can be adjusted appropriately.
- FIG. 2 is a sectional view of a transfer laminate used in the production method of the present invention.
- the position in the transfer material where the pattern can be formed can be a position adjacent to the magnetic recording layer.
- the most advantageous in terms of production efficiency is the small number of constants from the pattern formation to the card production.
- the case where a pattern is provided on a heat-sensitive adhesive layer is indicated. Head In the method, as shown in FIG.
- a colored layer 3 is further formed thereon, and a magnetic recording layer 4 is further formed thereon.
- the adhesive layer 5 is laminated and applied to form a transfer laminate for a plain magnetic stripe. As soon as the pattern to be formed on the magnetic stripe is determined, the pattern is printed on the heat-sensitive adhesive layer of the transfer laminate to form the pattern, thereby producing a transfer laminate having a pattern forming function.
- the pattern forming agent diffuses in the direction of the temporary support for transfer of the transfer laminate corresponding to the reading direction of the magnetic recording after transfer by heating the transfer laminate (FIG. 9 (1)). For this reason, when it is peeled off from the temporary transfer support and transferred onto the oversheet as the base material, it can be identified from the surface opposite to the base material of the transfer material, that is, the surface on the magnetic recording reading side. (See Fig. 3).
- the pattern-forming agent is transferred to the oversheet of the magnetic stripe transfer material, and then combined with the center core and the oversheet on the opposite side of the center core to integrate the card substrate (Fig. 9).
- the transfer material for the magnetic stripe is loaded on the oversheet, and at the same time, the pattern forming agent diffuses in the surface direction of the transfer material after transfer (direction toward the magnetic recording reading side).
- the printed pattern can be identified from the magnetic stripe surface.
- the pattern forming agent may be diffused only by the heat pressing process, which is essential in the magnetic card manufacturing process.
- the aging process in the state of the transfer laminate (FIG. 9 _ (1)) Is preferably performed because the pattern forming agent can be more reliably diffused.
- FIG. 4 and process chart 10 show a method for forming a pattern on the substrate side, that is, a portion where the magnetic stripe of the oversheet is transferred.
- This method is the same as the method shown in FIG. 9 up to the step of creating a transfer laminate for a magnetic stripe without a pattern.
- the pattern is over-magnetic. It is formed on the portion where the stripe is transferred, and a magnetic stripe transfer material is transferred thereon.
- the oversheet is combined with the center core, and a card press substrate is integrated with the oversheet on the opposite side of the center core to embed a transfer material for forming the magnetic stripe in the card substrate.
- the pattern forming agent of the pattern formed at this time is transferred to the oversheet through the magnetic recording layer.
- the surface direction of the transfer material (by spreading to the magnetic recording reading side, the pattern can be identified from the magnetic stripe surface. Become.
- the magnetic card manufactured in this way is a pattern forming agent diffusion preventing layer that also serves as a protective layer from the oversheet 6 laminated on the center core 7. 1 is exposed on the card surface, and a laminate that is a transfer material for magnetic stripe formation is embedded in the colored layer 3 of the transfer material for magnetic stripe formation, the magnetic recording layer 4, and the thermal adhesive layer 5 It has a pattern forming agent diffusion region 2 in which the pattern forming agent diffuses in the thickness direction. There, the pattern forming agent of the pattern 10 formed on the oversheet 6 in contact with the heat-sensitive adhesive layer 5 diffuses in the direction of the magnetic recording reading side of the stacked laminate and gradually decreases. A region having a concentration gradient is distributed in the surface direction. For this reason, the pattern can be identified from the pattern forming agent diffusion preventing layer 1 side.
- the above-mentioned method in which the pattern is directly formed on the oversheet side, which is the card base, in advance, can set the printing position accuracy of the pattern on the magnetic card higher than the other method formed on the transfer laminate side. . For this reason, it can be suitably used for mass production of complicated patterns that require accurate alignment between the pattern and the card substrate.
- a magnetic card having a pattern on the magnetic stripe portion can be formed by the procedure as described above.
- the pattern forming method used in the method for manufacturing a magnetic recording medium of the present invention is a magnetic stripe on a magnetic card.
- the present invention can also be applied to a laminated body that does not have a magnetic recording layer, not only in other locations, but also in a magnetic recording medium other than a magnetic card.
- the pattern formation method in such a case can be dealt with by omitting the magnetic recording layer, adding another layer, or replacing the magnetic recording layer with another functional layer in the process diagrams of FIGS. 9 and 10.
- a pattern may be formed over the entire surface of the card by using a transfer laminate that covers the entire surface of the card substrate and a transfer process.
- the transfer laminate for forming a magnetic stripe which is one of the embodiments of the transfer laminate of the present invention, is formed on the transfer substrate 9 as necessary, as shown in the cross-sectional configuration diagram of FIG.
- Manufactured by sequentially laminating a pattern forming agent diffusion prevention layer 1, a colored layer 3 formed as necessary, a magnetic recording layer 4 as an essential component, and a heat-sensitive adhesive layer 5 formed as necessary can do.
- a heat-sensitive adhesive layer is provided on the magnetic recording layer, it is preferable to form a pattern on which a pattern printing 10 is applied on the heat-sensitive adhesive layer.
- any known and commonly used film can be used as a temporary support for transfer.
- polyesters such as polyethylene terephthalate, polyolefins such as polypropylene, cellulose derivatives such as cellulose triacetate, and other plastics such as polyamide.
- polyethylene terephthalate having both tensile strength and heat resistance is preferred.
- the thickness of the transfer substrate film is not particularly limited, but is usually 3 to 100 ⁇ m, preferably 5 to 50 ⁇ m.
- a pattern forming agent diffusion preventing layer can be used.
- the pattern-forming agent diffusion prevention layer passes through the heat-sensitive adhesive layer, magnetic recording layer, colored layer, etc., and the pattern forming agent of the pattern diffused in the magnetic recording reading direction after forming the magnetic card exceeds the outermost layer. Furthermore, it prevents diffusion to the outside.
- the pattern forming agent is prevented from adhering to the metal plate for hot pressing in the transfer process of the transfer material for forming the magnetic stripe.
- the pattern forming agent diffusion preventing layer functions as a protective layer for the entire transfer material.
- the pattern formation agent that has diffused down to the bottom of the pattern formation agent diffusion prevention layer can be identified, or when the pattern is formed of a fluorescent agent, it is irradiated visually. It is preferable that it is substantially transparent to light, electron beam, etc. corresponding to detection of a pattern so that ultraviolet rays can be transmitted.
- the binder resin constituting the pattern forming agent diffusion preventing layer is slightly different depending on the type of the pattern forming agent, but for example, a cellulose-based resin, a petal resin, an acrylic resin, a polyurethane resin, and a polyester. Resin, copolymer of vinyl chloride and vinyl acetate, or in addition, when glass transition point diffuses the pattern-forming agent from chlorinated resin such as butyl alcohol, maleic anhydride or acrylic copolymer, epoxy resin, phenolic resin, melamine resin, etc. Those having a temperature higher than the heating temperature of the transfer laminate or the hot press temperature are preferably used.
- the diffusion path of the pattern forming agent is considered to be a molecular gap, adding a curing agent such as a polyisocyanate compound to crosslink between the resin binder molecules will prevent diffusion. Then, it is preferable to use a type that does not include various types of fillers that are likely to generate pores in the preferred layer. Since the pattern forming agent diffusion preventing layer also functions as a protective layer, it is preferable to use a curing agent from the viewpoint of improving durability.
- a resin used for a diffusion preventing layer of a sublimable dye which is preferably a hydrophilic resin having low compatibility and dyeability with the dye, can be preferably used.
- cellulose resin is preferred in consideration of adhesiveness to ordinary thermoplastic resin, heat resistance, and water resistance, and nitrocellulose and cellulose acetate are more preferred.
- soybean lecithin, microsilica, wax, or the like can be added as a film modifier to the pattern forming agent diffusion preventing layer as required.
- Examples of the solvent used in the paint for the pattern forming agent diffusion preventing layer include ketones such as acetone, methyl ethyl ketone, and cyclohexanone, esters such as methyl acetate, ethyl acetate, and butyl acetate, alcohols such as ethanol, and hexane.
- ketones such as acetone, methyl ethyl ketone, and cyclohexanone
- esters such as methyl acetate, ethyl acetate, and butyl acetate
- alcohols such as ethanol
- hexane hexane
- hydrocarbons such as toluene, xylene and the like can be used, and two or more kinds of these mixed lj can be used in combination.
- the anti-diffusion layer for the pattern forming agent is formed by applying the anti-diffusion layer coating material prepared as described above onto the temporary transfer support film for transfer by a commonly used method such as a reverse method, a gravure method, or a die coating method. Is obtained.
- the dry coating thickness of the pattern-former diffusion prevention layer is better as the recording / reproduction characteristics are lower, and the thinner the better, the more the pattern-former diffusion holes may be formed if it is too thin. It becomes impossible. In consideration of balance with strength, durability, etc., 0.:!- is preferable, and 0.3-2 zm is more preferable.
- the transfer laminate used in the method for producing a magnetic recording medium of the present invention is a colored layer (hiding layer). You may have.
- the colored layer contains a binder resin and a colorant as components, and conceals the hue of the adjacent magnetic recording layer, and is colored by holding the pattern forming agent diffused in the colored layer in the colored layer. Since the hue of the layer is identified as the background, it is possible to easily identify the pattern and enhance the design.
- the pigments used for the colorant include alumina, titanium oxide, chromium oxide, iron oxide, zinc oxide, barium sulfate, etc. as inorganic pigments, and azo, phthalocyanine, quinatalidone, perylene, organic pigments, etc.
- inorganic pigments alumina, titanium oxide, chromium oxide, iron oxide, zinc oxide, barium sulfate, etc.
- dyes such as phthalocyanine dyes, azo dyes, nitro dyes, quinoline dyes, methine dyes, azine dyes, and fatalein dyes may be used in place of or in combination with the above pigments.
- scaly metal powder can be used as a pigment that can effectively conceal the hue of the magnetic recording layer
- the metals include aluminum, gold, silver, copper, brass, titanium, chromium, nickel, nickel chrome, Stainless steel or the like can be used.
- the flake metal powder is formed, for example, in a plate shape by a ball mill or the like, or formed by peeling a deposited thin film, and the size in the plane direction is 5 to 25/1 111 pieces. Childish, 10-15 / im is even better. Thickness is 0 ⁇ 1 ⁇ ! It is about / i m.
- the binder resin used for the coating material for the colored layer a publicly known and commonly used binder resin can be used, and it can be thermally cured using an isocyanate compound.
- the binder used for the colored layer of polyimide resin, polyamide resin, rosin-modified maleic resin, polystyrene resin, shellac, alkyd resin, etc.
- a resin whose Tg is lower than the temperature applied to the transfer material for the diffusion of the pattern forming agent can be suitably used.
- the pattern forming agent for the pattern can be diffused through the colored layer in the magnetic recording reading direction, that is, the surface direction of the transfer material after transfer.
- the speed and difficulty of diffusion vary depending on the type of resin used in the colored layer, but can be adjusted by appropriately selecting the temperature applied to the transfer material and the resin used in the colored layer.
- solvent used for the color layer coating material known and commonly used solvents can be used.
- solvents described in the protective layer can be used.
- the colored layer can be formed by combining the colorant in the binder resin and the solvent that dissolves the binder resin, or by mixing two or more types, two roll mill, three roll mill, ball mill, sand mill, dispa It is possible to prepare a colored layer coating material by dispersing it by a known and conventional method, and apply and dry it by a known and usual method such as a reverse method, gravure coating method, die coating method or the like.
- the thickness of the colored layer is preferably thick so as to hide the brown or black color of the magnetic recording layer.
- the thickness of the colored layer is preferably 2 to 5 ⁇ , particularly 3 to 4 / im.
- the magnetic recording layer of the transfer laminate used in the method for producing a magnetic recording medium of the present invention is, for example, a magnetic recording layer coating containing a magnetic powder, a binder resin, and a solvent that dissolves the binder resin. Can be formed directly on the temporary transfer support, on the pattern forming agent diffusion preventing layer, or on the colored temporary layer.
- magnétique powders such as ⁇ -iron oxide, magnetite, cobalt-coated iron oxide, chromium dioxide, iron-based metal magnetic powder, barium ferrite, and strontium ferrite are used. Can be used. A coercive force in the range of 20 to 320 kA / m is preferred.
- binder resin used for the magnetic recording layer known and commonly used binder resins can be used.
- binder resin described in the case of the colored layer can be used.
- it can also be thermally cured using an isocyanate compound.
- a solvent used for the magnetic recording layer coating material it is possible to use, for example, generally the solvents described in the protective layer.
- the pattern forming agent of the pattern forming layer can be diffused through the magnetic recording layer in the magnetic recording reading direction, that is, to the surface of the transfer material after transfer.
- the speed and difficulty of diffusion vary depending on the type of resin, but the temperature applied to the transfer material and the resin used for the magnetic recording layer can be appropriately selected and adjusted.
- the Tg of the binder resin used for the magnetic recording layer is preferably lower than the temperature applied to the transfer material.
- a surfactant, a silane coupling agent, a plasticizer, a wax, a silicone oil and other auxiliary agents, and carbon black and other fillers may be added to the magnetic coating as necessary.
- the coating material for the magnetic recording layer can be obtained, for example, by kneading and dispersing the above magnetic powder, binder resin, and solvent by a known and conventional method.
- the kneading and dispersing machine include a two-necked-no-reminole, three-roll mill. , Bono Reminole, Henschel Mixer, Cobo Remino Le, Sand Mill, Desper, Homogenizer, Kneader, etc. can be used.
- the coating method for the magnetic recording layer is not particularly limited, and after applying a predetermined amount of a good magnetic coating using a well-known conventional coating method, the direction of easy magnetization of the magnetic powder is the longitudinal direction of the magnetic recording layer coating. Then, the alignment treatment is performed to dry.
- a coating method for example, a gravure method, a reverse method, a transfer roll coater method, a kiss coater method, a die coater method, or the like can be used.
- the magnetic field orientation method a known method such as a repulsive permanent magnet or a solenoid type electromagnet can be used.
- the magnetic field strength is preferably in the range of 1000-6000G.
- the dry film thickness of the magnetic recording layer is preferably in the range of 2 to 50 x m, more preferably in the range of 5 to 20 x m.
- a heat-sensitive adhesive layer can be used for the purpose of favorably bonding the transfer laminate and the card substrate.
- the heat-sensitive adhesive layer generally contains a resin exhibiting heat-sensitive adhesive properties, for example, a copolymer of vinyl chloride and butyl acetate, certain resin, butyl alcohol, maleic anhydride or acrylic. Examples thereof include salt resin resins such as copolymers to which an acid is added, polyester resins, acrylic resins, polyimide resins, polyurethane resins and the like.
- the solvent used for the heat-sensitive adhesive layer for example, the solvents described in the protective layer can be used.
- the heat-sensitive adhesive layer is prepared by dissolving a resin exhibiting heat-sensitive adhesive properties in a solvent, mixing and agitating to prepare a heat-sensitive adhesive paint, and applying this adhesive paint on the magnetic recording layer such as reverse method, gravure method, die coating method, etc. By applying and drying by the method of Can be obtained.
- the film thickness of the heat-sensitive adhesive layer is preferably 0.5 to 15 ⁇ m force S, particularly preferably 0.5 to 5 zm.
- the pattern forming agent can be diffused through the heat-sensitive adhesive layer in the magnetic recording reading direction, that is, the surface direction of the transfer material.
- the speed and difficulty of diffusion vary depending on the type of resin used in the heat-sensitive adhesive layer, but can be adjusted by appropriately selecting the temperature applied to the transfer material and the resin used in the magnetic recording layer.
- the Tg of the binder resin used for the heat-sensitive adhesive layer is preferably lower than the temperature applied to the transfer material.
- the pattern formation in the transfer laminate used in the method for producing a magnetic recording medium of the present invention can be performed by printing using the following pattern forming ink when a colorant is used as the pattern forming agent.
- the pattern forming ink contains a binder resin, a colorant, and a solvent.
- the colorant for the ink for forming a pattern it is possible to select and use a well-known dye or pigment that can be easily diffused.
- Known dyes used in (1) can be used. Use of oil-soluble dyes such as monoazo, disazo, metal complex, anthraquinone, phthalocyanine, triallylmethane, and perylene is preferred.
- the diffusion of the pattern forming agent in the production method of the present invention can be performed over a sufficient temperature and time during the transfer process when producing the magnetic recording medium.
- Good sublimation for diffusion in a short time required for ordinary sublimable dyes is not always necessary. Rather, it is preferable to use a dye other than the sublimable dye in consideration of the stability of the colorant.
- binder resin used for the pattern forming ink known and commonly used binder resins can be used.
- the resin used in the pattern-former diffusion preventing layer, the colored layer, the magnetic recording layer, and the heat-sensitive adhesive layer can be mentioned. Even if a pattern is formed on the heat-sensitive adhesive layer, the binder resin that does not inhibit the adhesion of the heat-sensitive adhesive layer to the oversheet has good adhesion to the oversheet. Adhesive resins can be suitably used.
- solvent used in the pattern forming ink known and commonly used solvents can be used, for example, The solvents described above in connection with the pattern forming agent diffusion preventing layer, the colored layer, the magnetic recording layer, and the heat-sensitive adhesive layer can be used.
- the ink for forming a pattern is obtained by dissolving a pattern forming agent in a binder resin and a solvent that dissolves the binder resin, or a mixture of two or more of them, or by dissolving them in a two-roll mill or three-neck.
- the pattern forming ink is prepared by dispersing by a method using a known and common dispersing device such as a roll mill, a ball mill, a sand mill, and a disperser.
- known printing methods such as gravure printing, flexographic printing, offset printing, screen printing, and inkjet can be used, but gravure printing is particularly suitable from the viewpoint of printing quality and productivity. .
- the film thickness of the pattern printing is not particularly limited, but if the film thickness is too thick, the transfer material for forming the magnetic stripe is generally wound up in a reel shape, so the film thickness between the non-printing area and the printing area when winding up There is a possibility that the transfer material will be deformed due to a large step due to the difference, and the adhesion between the transfer material for forming the magnetic stripe and the substrate may be deteriorated. Therefore, the film thickness is preferably 0.5 to 5 ⁇ force S, particularly 0.5 to 2.0 / im force S, preferably 0
- the pattern forming ink is used to form a pattern, for example, on the heat-sensitive adhesive surface of the magnetic stripe transfer material or on the portion where the magnetic stripe on the card substrate side is transferred.
- the transfer material is present on the temporary transfer support and several hours in a high temperature environment of 40 to 80 ° C before the transfer process. It can be allowed to stand for several days, and the pattern forming agent can be diffused in advance to the temporary support for transfer so that the transfer material can be distinguished from the surface side opposite to the transfer material after transfer.
- the transfer material when making a magnetic card using a hot-pressing process, transfer the transfer material to the card sheet's cover sheet, and then insert it into the hot-press metal sheet together with the oversheet opposite to the center core. Perform hot pressing for several tens of minutes to several hours at a temperature of ⁇ 160 ° C, and diffuse the pattern forming agent to the surface of the transfer material after transfer to make it distinguishable from the surface of the magnetic card. be able to.
- the method for producing a magnetic recording medium of the present invention can be performed by printing the following phosphor pattern forming ink.
- the fluorescent pattern forming ink of the present invention contains a binder resin, a fluorescent agent and a solvent.
- organic fluorescent materials as fluorescent agent for fluorescent pattern forming ink Power S can be.
- fluorescing dyes such as benzoxazole thiophine, diaminostilbene, imidazole, coumarin, naphthalimide, and rare earth complexes are preferable because of their good diffusion.
- commercially available fluorescent substances include trade name UVITEX OB manufactured by Chiba Special Chemicals, trade name Kayalig ht ⁇ S manufactured by Nippon Kayaku Co., Ltd., trade name Thermoplast series, trade name Fluorol series manufactured by BASF, The product name Lumogen series, the product name Lumicolor manufactured by Recording Materials Research Laboratory, etc. can be used.
- the use of a fluorescent dye is preferred in terms of ease of diffusion.
- the fluorescent pattern forming ink using the fluorescent agent can be manufactured in the same manner as the pattern forming ink described above except that a fluorescent agent is used instead of the colored colorant.
- a fluorescent agent is used instead of the colored colorant.
- the above-mentioned colorants and fluorescent agents are used as dyes and pigments for these functional paints.
- the functional ink can be produced by replacing the pattern and the pattern can be formed on the magnetic recording medium.
- a colorant and a fluorescent agent may be used simultaneously, or other functional inks may be used in combination.
- Sintered metal powder 20 parts of aluminum powder
- Preliminary meat was made on a two-roll roll together with a copper phthalocyanine pigment and a vinyl chloride-butyl acetate copolymer resin, and then passed through a sand mill with other materials to produce a pattern ink [D].
- Sintered metal powder 20 parts of aluminum powder
- UVITEX OB manufactured by Ciba Specialty Chemicals
- a polyethylene terephthalate film having a thickness of 24 ⁇ m was used as a temporary support for transfer.
- the above-mentioned paint for forming a pattern-forming agent, a coating for a colored layer, a magnetic layer Apply the coating material for the air recording layer and the heat sensitive adhesive paint in this order using a reverse coater and dry them respectively, and apply the pattern forming agent diffusion prevention layer, colored layer, magnetic recording layer, and heat sensitive adhesive layer respectively.
- the thickness of each layer after drying is 1 II m for the pattern former diffusion prevention layer, 4 ⁇ m for the colored layer, 9 ⁇ m for the magnetic recording layer, and 1.5 ⁇ m for the heat-sensitive adhesive layer. did.
- the pattern ink [A] was printed by the gravure printing method as shown in FIG. 6 so that the film thickness of the pattern portion was l z m. After that, it was left in a constant temperature room at 60 ° C for 24 hours to diffuse the pattern colorant through the heat-sensitive adhesive layer, magnetic recording layer, and colored layer toward the transfer substrate of the transfer laminate. .
- a magnetic card was prepared in the same manner as in Example 1 except that the pattern forming ink was changed to the pattern forming ink [B] in the pattern printing of Example 1.
- Example 2 In the same manner as in Example 1, except that the transfer laminate for forming the magnetic stripe after pattern printing was not left in a high-temperature room at 60 ° C for 24 hours. Created force.
- Example 2 In the same manner as in Example 2, except that the transfer laminate for forming a magnetic stripe after pattern printing was not left in a high-temperature room at 60 ° C for 24 hours. Created force.
- Example 5 the magnetic stripe transfer material was prepared in the same manner as in Example 1. As shown in FIG. 7, the pattern was printed on the part where the magnetic stripe on the oversheet side, which is the card substrate, was transferred. The ink [A] was used for the gravure printing method. Thereafter, a magnetic card was produced in the same manner as the magnetic card production method of Example 1.
- a magnetic card was prepared in the same manner as in Example 5 except that the pattern forming ink was changed to the pattern forming ink [B] in the pattern printing of Example 5.
- a polyethylene terephthalate film with a thickness of 24 ⁇ m was used, and the film thickness after drying the paint for the pattern-forming agent diffusion prevention layer (for protective layer) on one side of this film was 1 ⁇ m.
- Application and drying were performed using a reverse coater so as to be m.
- a pattern was formed by gravure printing using a pattern forming ink [C] and a film thickness force S 1 / im of the pattern after drying.
- the pattern portion formed with the pattern ink [C] so that the film thickness after drying the non-pattern portion filling paint becomes 1 ⁇ m. Printing was done so that it fits the other parts.
- the color layer coating material, the magnetic recording layer coating material, and the heat sensitive adhesive coating material were applied and dried in this order using a reverse coater, and the colorant diffusion preventing layer, coloring layer, magnetic recording layer, And a heat sensitive adhesive layer.
- the thickness of each layer after drying was 4 zm for the colored layer, 9 xm for the magnetic recording layer, and 1.5 zm for the heat-sensitive adhesive layer.
- the transfer material is transferred to a card base cover sheet (made by Taihei Chemical Co., Ltd.) made of polychlorinated bur using a heat seal tester (manufactured by Tester Sangyo Co., Ltd.) and temporarily supported for transfer. The body was removed.
- the oversheet together with the oversheet opposite to the center core for the card substrate, using a flat press (test vulcanizing press, manufactured by Toyo Seiki Seisakusho), 140 ° C, 1.3 M Pa, 20 Heat-pressed under ⁇ 30 minutes and punched into a card to produce a magnetic card.
- a flat press test vulcanizing press, manufactured by Toyo Seiki Seisakusho
- Comparative Example 2 A magnetic card was prepared in the same manner as in Comparative Example 2 except that the pattern forming ink was changed to the pattern forming ink [D] in Comparative Example 1.
- Comparative Example 1 the non-picture part was not filled with the non-picture part filling paint, and a magnetic card was produced in the same manner as in Comparative Example 1, except that it was not filled.
- the magnetic stripe of the magnetic card was visually evaluated.
- the step of the magnetic card as a laminate and the size of the unevenness were evaluated.
- the recording / reproduction characteristics of the obtained magnetic card were measured using a MAG TESTER2000 manufactured by BARNES, and the output fluctuation was calculated by the following equation.
- the film thickness of the magnetic recording layer is adjusted according to each spacing, and the output average value becomes equal to the reference card output. Adjustments were made.
- Output fluctuation (%) ((Output maximum value-Output minimum value) Z output average value) X 100
- the number of processes from picture formation to card completion is less than 4 and it is possible to deal with card delivery and design changes as quickly as possible.
- the present examples:! To 6 can secure the same designability as the conventional magnetic card having a pattern, and the dye used for the pattern printing is a magnetic recording layer or a colored layer. Since the gaps are diffused and colored, the distance between the magnetic stripe surface and the magnetic recording layer does not substantially change between the picture part and the non-picture part, and the output fluctuation caused by the picture does not occur at all. In addition, since the number of processes from design determination to card completion is small, the delivery time can be greatly shortened, and it is possible to respond quickly to pattern changes.
- a polyethylene terephthalate film having a thickness of 24 ⁇ m was used as a temporary support film for transfer.
- the above-described coating material for fluorescent agent diffusion prevention layer, coating material for colored layer, coating material for magnetic recording layer, and heat-sensitive adhesive The agent paints were applied and dried in this order using a reverse coater, and a fluorescent agent diffusion preventing layer, a colored layer, a magnetic recording layer, and a heat-sensitive adhesive layer were provided, respectively.
- each layer after drying was set to 1 ⁇ for the fluorescent agent diffusion prevention layer, 4 / m for the colored layer, 9 / m for the magnetic recording layer, and 1.5 ⁇ for the heat-sensitive adhesive layer. .
- fluorescent pattern printing As fluorescent pattern printing, fluorescent pattern printing ink ( ⁇ ) is applied onto the surface of the heat-sensitive adhesive layer of the transfer material created above using the gravure printing method so that the film thickness of the pattern area is lxm as shown in Fig. 6. And left in a constant temperature room at 60 ° C for 24 hours. At this stage, the temporary transfer support was peeled off, and ultraviolet rays were irradiated from the surface side of the fluorescent agent diffusion prevention layer with an ultraviolet irradiation device, and a fluorescent pattern was visible. It can be seen that the fluorescent pattern fluorescent agent is sufficiently diffused to the transfer substrate side by the aging process.
- the transfer laminate for magnetic stripe formation produced above is cut into a predetermined width, and then over-sheet for card base made of polysalt gel (by Taihei Chemical Co., Ltd.) using a heat seal tester (manufactured by Tester Sangyo Co., Ltd.) After transferring the transfer material, remove the temporary support film for transfer, and use a flat pressure press (test vulcanizing press, manufactured by Toyo Seiki Seisakusho Co., Ltd.) together with the oversheet opposite to the center core for the card substrate. Using hot pressure pressing under conditions of temperature 130-140 ° C, pressure 20kg / cm 2 , time 20-30 minutes, then carded The magnetic card (Fig. 8) was produced by punching into
- a magnetic card was prepared in the same manner as in Example 7 except that the fluorescent pattern forming ink [A] was changed to the fluorescent pattern forming ink [B] in the fluorescent pattern printing of Example 7.
- Example 7 Similar to Example 7, except that the fluorescent pattern printing in Example 7 is not left in a thermostatic chamber at 60 ° C for 24 hours after the fluorescent pattern printing. Thus, a magnetic card was created.
- Example 8 the magnetic laminate-forming transfer laminate after fluorescent pattern printing was not left in a constant temperature room at 60 ° C. for 24 hours. Created a card.
- Example 7 the transfer laminate for forming the magnetic stripe was prepared in the same manner as in Example 7, and the fluorescent pattern was printed on the portion where the magnetic stripe on the card substrate “oversheet” was transferred. As shown in FIG. 7, fluorescent pattern printing was performed by the gravure printing method using the ink [A]. Thereafter, a magnetic card was produced in the same manner as the magnetic card production method of Example 7.
- a magnetic card was prepared in the same manner as in Example 7 except that the fluorescent pattern forming ink [A] was changed to the fluorescent pattern forming ink [B] in the fluorescent pattern printing of Example 9.
- a transparent oversheet having a magnetic recording layer formed beforehand, a center core, a transparent oversheet, and a magnetic tape are laminated in this order, and heat-sealed simultaneously with one heating to obtain a pre-laminated card substrate.
- a polyethylene terephthalate film having a thickness of 188 m was used as a temporary support film for transfer.
- the above-mentioned fluorescent agent diffusion-preventing layer coating, colored layer coating, and heat-sensitive adhesive coating were placed in this order. Apply and dry using a reverse coater And a fluorescent agent diffusion preventing layer, a colored layer, and a heat-sensitive adhesive layer, respectively.
- the thickness of each layer after drying was formed so that the fluorescent agent diffusion preventing layer was 1 ⁇ , the colored layer was 4 ⁇ m, and the heat-sensitive adhesive layer was less than ⁇ m.
- the fluorescent pattern forming ink [A] was formed by a gravure printing method so that the thickness after drying would be 1 ⁇ m or less. In this way, a concealing layer transfer sheet with a fluorescent pattern is formed.
- a magnetic card was prepared in the same manner as in Comparative Example 4 except that the fluorescent pattern forming ink [A] was changed to the fluorescent pattern forming ink [B] in Comparative Example 4.
- Comparative Example 4 a magnetic force mode was prepared in the same manner as in Comparative Example 4 except that the thickness of the colored layer was 7 ⁇ m.
- the presence or absence of fluorescence emission of the fluorescent pattern by ultraviolet light contained in sunlight or indoor light was evaluated visually under sunlight or indoor light.
- the recording / reproduction characteristics of the magnetic card obtained were measured using MAGTESTER2000 manufactured by BARNES, and the output fluctuation was obtained by the following equation.
- Output fluctuation (%) ((Output maximum value Output minimum value) / Output average value) X 100
- Fluorescent pattern Fluorescent pattern Fluorescent pattern concealability Fluorescence output fluctuation
- Examples 7 to 12 are the same as Comparative Examples 4 and 5, which are one embodiment of a magnetic card having a conventional fluorescent pattern. Fluorescent light emission intensity can be secured, and the fluorescent pattern is not visually recognized by the fluorescent light emission by ultraviolet rays contained in sunlight or indoor light. Furthermore, in Examples 7 to 12, since the fluorescent agent used in the fluorescent pattern printing is diffused in the magnetic recording layer and the colored layer, the fluorescent pattern printing is performed on the colored layer with visible light such as sunlight and room light. Reflection does not cause visible deformation of the outline of the fluorescent pattern printed part.
- Example 6 in which the number of processes from the pattern formation process to the card completion is less than before, and the pattern can be handled more quickly. It is. Industrial applicability
- the present invention provides a magnetic recording medium in which a pattern identifiable from the magnetic reading side is formed on a magnetic stripe portion, a method for producing the magnetic recording medium, and a transfer laminate used in the method for producing the magnetic recording medium.
- a card-like magnetic recording medium such as a credit card or a bank card in which a layer containing a magnetic recording medium layer is laminated on a card base layer.
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Abstract
Description
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Priority Applications (7)
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CA2575750A CA2575750C (en) | 2004-06-30 | 2005-06-30 | Magnetic recording medium and production method thereof |
EP05755842A EP1780044B1 (en) | 2004-06-30 | 2005-06-30 | Magnetic recording medium and magnetic recording medium manufacturing method |
AU2005258450A AU2005258450B2 (en) | 2004-06-30 | 2005-06-30 | Magnetic recording medium and magnetic recording medium manufacturing method |
US11/571,393 US8159784B2 (en) | 2004-06-30 | 2005-06-30 | Magnetic recording medium and production method thereof |
CN2005800289913A CN101027191B (zh) | 2004-06-30 | 2005-06-30 | 磁记录介质和磁记录介质的制造方法 |
AT05755842T ATE537006T1 (de) | 2004-06-30 | 2005-06-30 | Magnetisches aufzeichnungsmedium und verfahren zur herstellung eines magnetischen aufzeichnungsmediums |
KR1020077002186A KR101138322B1 (ko) | 2004-06-30 | 2005-06-30 | 자기 기록 매체 및 자기 기록 매체의 제조 방법 |
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US (1) | US8159784B2 (ja) |
EP (1) | EP1780044B1 (ja) |
KR (1) | KR101138322B1 (ja) |
CN (1) | CN101027191B (ja) |
AT (1) | ATE537006T1 (ja) |
AU (1) | AU2005258450B2 (ja) |
CA (1) | CA2575750C (ja) |
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JP2006044250A (ja) * | 2004-06-30 | 2006-02-16 | Dainippon Ink & Chem Inc | 磁気記録媒体上の新規絵柄形成方法及びこれに用いる転写用積層体及び磁気記録媒体 |
US20230020171A1 (en) * | 2019-12-20 | 2023-01-19 | Idemia France | Method for producing an electronic document comprising a concealed magnetic strip, and electronic document thereby obtained |
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US7980462B1 (en) * | 1998-11-27 | 2011-07-19 | Diebold Self-Service Systems Division Of Diebold, Incorporated | Automated transaction machine with card reader that can read unique magnetic characteristic of a magnetic stripe |
CN102270407A (zh) * | 2010-06-01 | 2011-12-07 | 罗吉尔 | 带有标记结构的胶粘材料 |
US20140138443A1 (en) * | 2012-11-21 | 2014-05-22 | Black Card Llc | Transaction card |
CN108520423B (zh) * | 2018-03-23 | 2020-10-16 | 拍拍看(海南)人工智能有限公司 | 自然渐变色防伪方法及产品 |
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- 2005-06-30 CN CN2005800289913A patent/CN101027191B/zh active Active
- 2005-06-30 KR KR1020077002186A patent/KR101138322B1/ko active IP Right Grant
- 2005-06-30 WO PCT/JP2005/012064 patent/WO2006003985A1/ja active Application Filing
- 2005-06-30 CA CA2575750A patent/CA2575750C/en not_active Expired - Fee Related
- 2005-06-30 AT AT05755842T patent/ATE537006T1/de active
- 2005-06-30 EP EP05755842A patent/EP1780044B1/en active Active
- 2005-06-30 AU AU2005258450A patent/AU2005258450B2/en not_active Ceased
- 2005-06-30 US US11/571,393 patent/US8159784B2/en not_active Expired - Fee Related
- 2005-06-30 TW TW094122024A patent/TWI383385B/zh not_active IP Right Cessation
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JP2006044250A (ja) * | 2004-06-30 | 2006-02-16 | Dainippon Ink & Chem Inc | 磁気記録媒体上の新規絵柄形成方法及びこれに用いる転写用積層体及び磁気記録媒体 |
US20230020171A1 (en) * | 2019-12-20 | 2023-01-19 | Idemia France | Method for producing an electronic document comprising a concealed magnetic strip, and electronic document thereby obtained |
Also Published As
Publication number | Publication date |
---|---|
EP1780044A4 (en) | 2009-07-15 |
CA2575750C (en) | 2013-01-15 |
KR101138322B1 (ko) | 2012-04-25 |
EP1780044B1 (en) | 2011-12-14 |
EP1780044A1 (en) | 2007-05-02 |
TWI383385B (zh) | 2013-01-21 |
US8159784B2 (en) | 2012-04-17 |
CA2575750A1 (en) | 2006-01-12 |
TW200606858A (en) | 2006-02-16 |
ATE537006T1 (de) | 2011-12-15 |
KR20070034610A (ko) | 2007-03-28 |
CN101027191A (zh) | 2007-08-29 |
US20080253255A1 (en) | 2008-10-16 |
AU2005258450B2 (en) | 2010-07-15 |
AU2005258450A1 (en) | 2006-01-12 |
CN101027191B (zh) | 2011-09-21 |
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