Patent Publication Number: US-2020292988-A1

Title: Light diffraction layer laminated sheet and method for producing card

Description:
TECHNICAL FIELD 
     The present invention relates to a light diffraction layer laminated sheet and a method for producing a card. 
     BACKGROUND ART 
     Hitherto, a card has been known of in which a light diffraction structure is built, such as a hologram (for example, see Patent Document 1). 
     However, a high manufacturing technical level was required for existing light diffraction structures, and there were a limited number of manufacturers. Furthermore, when the light diffraction structure is a Lippmann hologram, a higher manufacturing technical level was required and there were a less number of manufacturers. 
     Patent Document 1: Japanese Unexamined Patent Application, Publication No. 2002-32724 
     DISCLOSURE OF THE INVENTION 
     Problems to be Solved by the Invention 
     An object of the present invention is to provide a light diffraction layer laminated sheet by which a card having a light diffraction structure can be easily produced, and a card. 
     Means for Solving the Problems 
     The present invention solves the above-described problems with the following means. Reference numerals corresponding to those of an embodiment of the present invention are given for the sake of better understanding, but it should be noted that the present invention is not limited thereto. Also, the constituents indicated by the reference numerals may be appropriately improved, and at least some of these constituents may be replaced by the other constituents. 
     In a first aspect of the invention, a light diffraction layer laminated sheet ( 20 ,  20 A,  220 ,  220 A,  320 ,  320 A) is provided, which is laminated on an upper side of a card substrate ( 10 ,  10 A,  410 ,  410 A) to form a part of a laminated structure of a card. The light diffraction layer laminated sheet includes: a transparent sheet layer ( 20 ,  20 A,  220 ,  220 A,  320 ,  320 A); a light diffraction layer ( 22 ) configured to have an outer shape smaller than an outer shape of the transparent sheet layer and to be laminated onto an upper side which is one surface side of the transparent sheet layer; and a lower adhesive layer ( 21 ) that bonds the transparent sheet layer and the light diffraction layer together. 
     In a second aspect of the invention, the light diffraction layer laminated sheet according to the first aspect is provided, which further includes: a print sheet layer ( 30 ,  30 A), which has been undergone printing, configured to be laminated onto the light diffraction layer ( 22 ); and an upper adhesive layer ( 23 ,  224 ) that is provided on the light diffraction layer, such that the light diffraction layer and the print sheet layer are bonded together. 
     In a third aspect of the present invention, the light diffraction layer laminated sheet according to the second aspect is provided, wherein the lower adhesive layer ( 21 ) and the upper adhesive layer ( 23 ,  224 ) are thermoplastic members, respectively and the upper adhesive layer is configured to have a higher temperature at which adhesiveness thereof appears than a temperature of the lower adhesive layer at which adhesiveness thereof appears. 
     In a fourth aspect of the present invention, the light diffraction layer laminated sheet according to the second or third aspect is provided, wherein the upper adhesive layer ( 23 ) includes a thermoplastic resin sheet, and the lower adhesive layer ( 21 ) includes a thermoplastic adhesive. 
     In a fifth aspect of the present invention, the light diffraction layer laminated sheet according to the first aspect is provided, which further includes a print layer ( 331 ) that is directly printed immediately on the light diffraction layer ( 22 ). 
     In a sixth aspect of the present invention, the light diffraction layer laminated sheet according to any one of the first to fifth aspect is provided, wherein the light diffraction layer ( 22 ) includes a Lippmann-type hologram. 
     In a seventh aspect of the present invention, a method for producing a card using the light diffraction layer laminated sheet according to any one of the second to fourth aspect is provided, in which the card ( 1 ,  301 ,  401 ) is produced through a multi-face layout. The method includes steps of: laminating a light diffraction layer laminated sheet material ( 20 A,  220 A,  320 A), which is laminated with a plurality of light diffraction layers ( 22 ), on a substrate sheet material ( 10 A) forming a plurality of card substrates ( 10 ,  410 ); and laminating a print sheet material ( 30 A) forming a plurality of print sheet layers ( 30 ) onto the light diffraction layer laminated sheet material. 
     In an eighth aspect of the present invention, a method for producing a card using the light diffraction layer laminated sheet according to the fifth aspect is provided, in which the card ( 301 ) is produced through a multi-face layout. The method includes steps of: laminating a light diffraction layer laminated sheet material ( 30 A), which is laminated with a plurality of light diffraction layers ( 22 ), onto a substrate sheet material ( 10 A) forming a plurality of card substrates ( 10 ); and directly printing immediately on the light diffraction layer ( 22 ). 
     Effects of the Invention 
     According to the present invention, it is possible to provide a light diffraction layer laminated sheet by which a card having a light diffraction structure can be easily produced, and a card. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  and  FIG. 1B  are a top view and a cross-sectional view of a card  1  according to a first embodiment, respectively. 
         FIG. 2  is a cross-sectional view of a substrate sheet material  10 A, a hologram laminated sheet material  20 A, and a print sheet material  30 A according to the first embodiment. 
         FIG. 3  is a top view of the substrate sheet material  10 A, the hologram laminated sheet material  20 A, and the print sheet material  30 A according to the first embodiment. 
         FIG. 4  is a cross-sectional view of a substrate sheet material  10 A, a hologram laminated sheet material  220 A, and a print sheet material  30 A according to a second embodiment. 
         FIG. 5A  and  FIG. 5B  are a top view and a cross-sectional view of a card  301  according to a third embodiment, respectively. 
         FIG. 6  is a cross-sectional view of a substrate sheet material  10 A and a hologram laminated sheet material  320 A of the card  301  according to the third embodiment. 
         FIG. 7A  and  FIG. 7B  are a top view and a cross-sectional view of a card  401  according to a fourth embodiment, respectively. 
     
    
    
     PREFERRED MODE FOR CARRYING OUT THE INVENTION 
     Hereinafter, embodiments of the present invention will be described with reference to the drawings. 
     First Embodiment 
       FIG. 1A  and  FIG. 1B  are a top view and a cross-sectional view of a card  1  of a first embodiment, respectively. 
       FIG. 1A  is a top view of the card  1  (a view illustrating a front  1   a  of the card when viewed in the normal direction). 
       FIG. 1B  is a cross-sectional view of the card  1 . 
     In the embodiments, a horizontal direction X, a longitudinal direction Y, and a vertical direction Z (thickness direction) of the card  1  are described for convenience with reference to the state illustrated in  FIGS. 1A and 1B , but each direction of the card  1  can be appropriately determined depending on the arrangement. For example, when the front and the rear of the card  1  are arranged inversely to the state of  FIG. 1B , in the vertical direction Z of the card  1 , a lower side Z 1  (lower surface side) of  FIG. 1B  becomes an upper side and an upper side Z 2  (upper surface side) of  FIG. 1B  becomes a lower side. In addition, a configuration of the card in the vertical direction Z in the drawings is illustrated in an exaggerated way to clarify the configuration. 
     The card  1  is used as, for example, a cash card of a bank. 
     The card  1  includes a card substrate  10 , a lower print layer  12 , a transparent sheet layer  20 , an HS (heat seal) layer  21  (lower adhesive layer), a hologram layer  22  (light diffraction layer), a PC layer  23  (upper adhesive layer), a print sheet layer  30 , a magnetic stripe  30   a , and an upper print layer  31 . The transparent sheet layer  20 , the HS layer  21 , the hologram layer  22 , the PC layer  23 , the print sheet layer  30 , and the upper print layer  31  are laminated in this order from a lower side Z 1  to an upper side Z 2  (one side) of the card substrate  10 . 
     The card substrate  10  is a base member of the card  1 . The card substrate  10  is formed of a resin sheet material such as PET, PET-G, PVC, or PC. An outer shape of the card substrate  10  is equal to an outer shape of the card  1 . 
     A color of an upper surface of the card substrate  10  is black. A black may be a color of the card substrate  10  itself or may be a color which is printed on a substrate, the color of which is other than black. 
     The lower print layer  12  is provided on a lower surface of the card substrate  10 . 
     For example, precautions for using the card are printed on the lower print layer  12 . 
     The transparent sheet layer  20  is a transparent layer on which the hologram layer  22  is provided. The card substrate  10  is formed of a resin sheet material such as PET, PET-G, PVC, or PC. An outer shape of the transparent sheet layer  20  is equal to the outer shape of the card substrate  10 . 
     The HS layer  21  is an adhesive layer that bonds the transparent sheet layer  20  and the hologram layer  22  together. The HS layer  21  is formed of a thermoplastic adhesive (polyester resin or the like). Since the transparent sheet layer  20  and the hologram layer  22  are bonded each other, the hologram layer  22  will beak if an attempt to peel it off is made. In this manner, even if the hologram layer  22  is illegally peeled off, the peeling will be easily found out, so it is possible to increase the security of the card  1 . 
     The hologram layer  22  is a light diffraction layer for preventing forgery of the card  1 . The hologram layer  22  is a layer having a Lippmann type hologram. The hologram layer  22  has translucency. A hologram image  22   a  of a building is recorded in the hologram layer  22 . 
     The Lippmann-type hologram layer  22  is configured by applying a special polymer layer on a film (not illustrated), such as a PET substrate, to form an interference pattern due to changes in refractive index inside the polymer layer. The hologram layer  22  reproduces a hologram image via a diffraction phenomenon when light is incident on the interference pattern. The hologram layer  22  excels in the presentation of a stereoscopic effect in up and down and left and right directions, and the sense of depth. Accordingly, the hologram layer  22  brings the stereoscopic effect closer to a real object. Since the materials used and production process are unique, forgery of the hologram layer  22  is extremely difficult. Accordingly, the hologram layer  22  is more tolerant of being tampered than an emboss-type hologram, for example. 
     An outer shape of the hologram layer  22  is smaller than the outer shape of the card substrate  10 , that is, smaller than an outer shape of the transparent sheet layer  20 . That is, the hologram layer  22  is laminated only on a partial region of the card substrate  10 . The reason for the partial region is to make the expensive hologram layer  22  smaller, resulting in reduced cost. 
     The PC layer  23 , which is provided on the hologram layer  22 , is a layer which bonds the hologram layer  22  and the print sheet layer  30  together. An outer shape of the PC layer  23  is equal to the outer shape of the hologram layer  22 . The PC layer  23  is a thermoplastic resin sheet of PC (polycarbonate) in the embodiments. However, the type of resin is not limited to PC and may include PET, for example. 
     A temperature of the appearance of adhesiveness of the PC layer  23  is higher than that of the HS layer  21 . 
     The print sheet layer  30  is formed of a resin sheet material such as PET, PET-G, or PVC. An upper surface of the print sheet layer  30  may have a mirror-like finish or a matte finish. An outer shape of the print sheet layer  30  is similar to the outer shape of the card substrate  10 . 
     The magnetic stripe  30   a  is provided on the upper surface of the print sheet layer  30 . Information relating to a bank account number or the like is recorded in the magnetic stripe  30   a . This information can be read using a reader (not illustrated). 
     As illustrated in  FIG. 1A , the magnetic stripe  30   a  is disposed outside a transition portion  31   c  (to be described below) of the upper print layer  31 . 
     The upper print layer  31  is a layer printed in a black color as a background similar to that of the card substrate  10 . 
     In addition, the upper print layer  31  is printed with characters  31   a  indicating the name of a bank, graphics  31   b , or other necessary information (not illustrated). 
     The upper print layer  31  has the transition portion  31   c . The transition portion  31   c  is a portion of gradation printing in which the color density drops progressively towards inside the gradation printing. An outer edge portion  31   d  of the transition portion  31   c  is positioned more inside than an edge portion  22   b  of the hologram layer  22 . 
     The color density of the transition portion  31   c  becomes progressively lower, starting from 100% at the outer edge portion  31   d  to 0% at an inner edge portion  31   e . A region  31   f  positioned more outside than the transition portion  31   c  of the upper print layer  31  has a color density equal or substantially equal to a color density of the card substrate  10 . 
     A portion positioned more inside than the inner edge portion  31   e  of the transition portion  31   c  serves as a window portion  31   g.    
     The transparent print sheet layer  30  is completely exposed in the window portion  31   g . In this manner, an entirety of the hologram image  22   a  of the hologram layer  22  is visually recognizable through the window portion  31   g.    
     The upper print layer  31  may alternatively be provided on a lower surface of the print sheet layer  30  if necessary. 
     Next, how the card  1  is seen from the upper side Z 2  will be described. 
     (Vicinity of Edge Portion  22   b  of Hologram Layer  22 ) 
     As described above, the region  31   f  positioned more outside than the transition portion  31   c  of the upper print layer  31  has the color density equal or substantially equal to a color density of the card substrate  10 . In this manner, the edge portion  22   b  of the hologram layer  22  is shielded and hidden by the upper print layer  31  (see an arrow A). Moreover, since the card substrate  10  and the upper print layer  31  have a black color or its family, which absorbs light, the edge portion  22   b  of the hologram layer  22  is hardly recognizable visually. 
     (Transition Portion  31   c ) 
     Only the color of the upper print layer  31  is visually recognized at the outer edge portion  31   d  of the transition portion  31   c . Since the hologram layer  22  is transparent, the card substrate  10  becomes visually recognizable as a horizontal location moves inside from the outer edge portion  31   d . Then, only the color of the card substrate  10  is visually recognizable at the inner edge portion  31   e  of the transition portion  31   c  (see an arrow B). Moreover, the upper print layer  31  and the card substrate  10  have a black color of a similar color family. In this manner, the upper print layer  31  and the card substrate  10  are visually recognized as a single seamless part. 
     (Window Portion  31   g ) 
     Since the upper print layer  31  is not formed on the print sheet layer  30 , the hologram image  22   a  can be confirmed inside the window portion  31   g . Since the hologram is a transparent hologram, the color of the card substrate  10  is visually recognized at regions (an external region  22   c  outside the building, an internal portion  22   e  inside the building other than a line  22   d , and the like) other than the hologram image  22   a  of the hologram layer  22 . In addition, as described above, the upper print layer  31  and the card substrate  10  are visually recognized seamlessly as a single part. 
     For this reason, the circumference of the hologram image  22   a  is seen to have a wider range of black background surface than the hologram layer  22 . 
     In this manner, the hologram image  22   a  emerges from a black background, and so the hologram image  22   a  is seen more three-dimensionally. 
     The visual effect described above has been already confirmed by the production of test samples. 
     (Outside of Transition Portion  31   c ) 
     Since the background of the upper print layer  31  is printed in black, the internal part of the card is hidden outside the transition portion  31   c . In addition, the graphic  31   b  or the like printed on the upper print layer  31  is seen outside the transition portion  31   c . The magnetic stripe  30   a  is also hidden. 
     In this connection, the character  31   a , which is printed to traverse the window portion  31   g , is visually recognizable across the window portion  31   g , the transition portion  31   c , and the outside of the transition portion  31   c . In this case, the character  31   a  indicating a bank is seen overlapped with the hologram image  22   a  inside the window portion  31   g.    
     A method for producing a card  1  will be described below.  FIG. 2  is a cross-sectional view of a substrate sheet material  10 A, a hologram laminated sheet material  20 A, and a print sheet material  30 A according to the first embodiment. 
       FIG. 3  is a top view of the substrate sheet material  10 A, the hologram laminated sheet material  20 A, and the print sheet material  30 A according to the first embodiment. 
     The substrate sheet material  10 A, the hologram laminated sheet material  20 A, and the print sheet material  30 A are sheet materials of multi-face layout having been produced in a previous step prior to a main step.  FIG. 3  illustrates an example of multi-face layout which is arranged in two rows and five columns. 
     First, a method for producing each of the substrate sheet material  10 A, the hologram laminated sheet material  20 A, and the print sheet material  30 A will be described. It should be noted that the order of the following steps may be appropriately replaced with each other. 
     (Substrate Sheet Material  10 A) 
     The following processes are performed on the sheet material (card substrate  10 ) obtained by performing black printing on a black resin sheet or a resin sheet of a color other than black. 
     Step of Printing Lower Print Layer  12   
     For example, a transfer foil provided on the PET is transferred onto a lower side Z 1  of the sheet material. 
     Thus, the substrate sheet material  10 A provided with the lower print layer  12  is produced. 
     (Hologram Laminated Sheet Material  20 A) 
     (1) Step of Producing Hologram 
     As illustrated in  FIG. 2 , the hologram layer  22  is produced, the PC layer  23  is laminated onto the upper side Z 2  of the hologram layer  22 , and the HS layer  21  is laminated onto the lower side Z 1  of the hologram layer  22 . 
     (2) Step of Laminating Hologram 
     The hologram layer  22  laminated in the above step (1) is laminated onto the upper side Z 2  of the transparent sheet material (transparent sheet layer  20 ) by heat sealing (application of heat and pressure). A temperature of the heat sealing is set within a temperature range in which the adhesiveness of the HS layer  21  appears but the adhesiveness of the PC layer  23  does not appear. In this case, since the PC layer  23  is interposed between the hologram layer  22  and a pressurizing plate for the heat sealing, the pressurizing plate and the hologram layer  22  do not come in directly contact with each other and thus the hologram layer  22  can be protected. 
     In this manner, the hologram laminated sheet material  20 A is produced in which the HS layer  21 , the hologram layer  22 , and PC layer  23  are laminated onto the upper side Z 2  of the sheet material. 
     (Print Sheet Material  30 A) 
     (1) Step of Laminating Magnetic Stripe  30   a    
     As illustrated in  FIG. 2 , the magnetic stripe  30   a  is laminated onto an upper surface of the transparent sheet material (print sheet layer  30 ). 
     (2) Step of Producing Print Layer 
     For example, a transfer foil (upper print layer  31 ) provided on PET is transferred to an upper surface of the sheet material provided with the magnetic stripe  30   a  laminated in the above step (1). 
     Thus, the print sheet material  30 A is produced in which the magnetic stripe  30   a  and the upper print layer  31  are laminated. 
     Next, in the main step, the substrate sheet material  10 A, the hologram laminated sheet material  20 A, and the print sheet material  30 A are processed as follows. 
     (1) Step of Laminating Hologram Laminated Sheet Material  20 A 
     The substrate sheet material  10 A and the hologram laminated sheet material  20 A are laminated to each other using thermal welding while being heated and pressurized. These layers may alternatively be bonded each other using an adhesive or the like. 
     (2) Step of Laminating Print Sheet Material 
     The print sheet material  30 A is then laminated through thermal welding while being heated and pressurized onto the upper side Z 2  of the hologram laminated sheet material  20 A laminated in the above step (1). These layers may alternatively be bonded each other using an adhesive or the like. In addition, the PC layer  23  is softened by a heat-sealing process, such that the hologram laminated sheet material  20 A and the print sheet material  30 A are bonded each other. In this case, since the PC layer  23  is softened, it is possible to prevent the hologram from suffering from damage due to the application of a pressure. 
     Since the PC layer  23  is a thermoplastic resin sheet, it is possible to use the PC layer  23  as not only an adhesive layer but also a protection for the hologram layer  22  against the damage due to the application of a pressure. 
     (3) Step of Punching 
     The laminated sheet materials  10 A,  20 A, and  30 A are divided into separate pieces with an outer shape of the card by punching. 
     With the above-described process, the card  1  has been produced. 
     In the present embodiment, since the hologram laminated sheet material  20 A has been produced in advance in a separate step, it is possible to produce easily the card  1  embedded with the Lippmann hologram by laminating the sheet materials  10 A,  20 A, and  30 A. 
     All of steps of producing the card may be performed at a single factory. However, it may be alternatively possible that the previous steps of producing the substrate sheet material  10 A, the hologram laminated sheet material  20 A, and the print sheet material  30 A are performed at a different factory, such that the previous steps and the main step are performed at different factories. 
     Here, an advanced technology is required for the production of the hologram layer  22 . For this reason, it is possible to perform sharing of the steps among factories. For example, the hologram laminated sheet material  20 A having the hologram layer  22  is produced at a factory having the required technology; the substrate sheet material  10 A and the print sheet material  30 A are produced at a different factory from the hologram laminated sheet material  20 A; and the main step is also performed at a different factory from the hologram laminated sheet material  20 A. 
     As a result of sharing of the steps, it is possible for a factory performing the main step to produce the card  1  of an end product as long as the hologram laminated sheet material  20 A is available, even if the factory performing the main step does not have the technology for producing a Lippmann hologram. That is, since the card-producing step has a separate step of producing the hologram laminated sheet material  20 A, it is possible to easily produce a card with the Lippmann hologram. Accordingly, this will increase the number of factories at which it is possible to produce the card  1  with the Lippmann hologram, and will contribute to the expansion of the market. 
     Even if the steps are shared as described above, it is possible to protect the hologram layer  22  since the hologram laminated sheet material  20 A has the PC layer  23 . Accordingly, the storage and handling during transportation are easy. 
     As described above, the separate step of producing the hologram laminated sheet material  20 A facilitates the production of the card  1  of the present embodiment, which has a Lippmann hologram for which a high technique is required. 
     The upper print layer  31  and the card substrate  10  of black have been described as an example, but are not limited thereto. For example, the upper print layer  31  and the card substrate  10  may alternatively have any color of a similar color family. In addition, the color of the card substrate  10  or the upper print layer  31  does not matter as long as the upper print layer  31  has an effect of hiding the edge portion  22   b  of the hologram layer. 
     Second Embodiment 
     A second embodiment of the present invention will be described below. 
     It should be noted that, in the description and drawings for the following embodiments, the same reference symbol or the same reference symbol at the end (last two digits) is assigned to a portion which performs a function similarly with the first embodiment described above, and duplicated descriptions are not presented on a case-by-case basis. 
       FIG. 4  is a cross-sectional view (corresponding to  FIG. 2 ) of a substrate sheet material  10 A, a hologram laminated sheet material  220 A, and a print sheet material  30 A according to the second embodiment. 
     The hologram laminated sheet material  220 A is configured so that a PET layer  223  and an HS layer  224  (upper adhesive layer) instead of the PC layer  23  (see  FIG. 1B ) are laminated from a lower side Z 1  in this order. 
     In a step of laminating print sheet material of a main step of producing a card, the HS layer  224  bonds the hologram laminated sheet material  20 A and the print sheet material  30 A by a heat-sealing process. Accordingly, for the same reason as in the first embodiment, a temperature of the appearance of adhesiveness of the HS layer  224  is higher than a temperature of the appearance of adhesiveness of the HS layer  21 . That is for creating a condition under which the adhesiveness of the HS layer  21  appears, but the adhesiveness of the HS layer  224  does not appear, when the hologram layer  22  is laminated onto the transparent sheet layer  20  by heat sealing. 
     In addition, the PET layer  223  can prevent a hologram from suffering from the damage due to the application of a pressure. 
     In this manner, since the PET layer  223  and the HS layer  224  function similarly to the PC layer  23  of the first embodiment, the card of the second embodiment has the same effect as that of the first embodiment. 
     Third Embodiment 
     A third embodiment of the present invention will be described below. 
       FIG. 5A  and  FIG. 5B  are a top view and a cross-sectional view of a card  301  of the third embodiment. 
       FIG. 6  is a cross-sectional view of a substrate sheet material  10 A and a hologram laminated sheet material  320 A of the card  301  according to the third embodiment. 
     As illustrated in  FIG. 5B , the card  301  is configured so that a PC layer  23  (see  FIG. 1B ) or the like is not provided on a hologram layer  22  and an upper print layer  331  is directly provided on the hologram layer  22 . In addition, a magnetic stripe  30   a  is provided on a transparent sheet layer  20 . 
     As illustrated in  FIG. 6 , the hologram laminated sheet material  320 A has a simple configuration, accordingly. 
     The upper print layer  331  is provided using foil transfer or through a step of printing, such as silk printing. 
     The step of printing may be performed at a time of producing the hologram laminated sheet material  320 A of the previous step or may be performed in the main step. That is, the hologram laminated sheet material  320 A provided previously with the upper print layer  331  may be delivered to a factory in which the main step is performed, or the upper print layer  331  may be provided when each of the sheet materials  10 A and  220 A is laminated after the delivery at the factory. 
     As described above, the card  301  of the present embodiment is configured in such a manner that the upper print layer  331  is directly provided on the hologram laminated sheet material  320 A. 
     Accordingly, it is possible to introduce a simple configuration, which results in low cost. In this connection, it may be alternatively possible that the card  301  is configured so that the PC layer  23  (see  FIG. 1B ) is provided on the hologram layer  22 , similarly with the first embodiment. In this case, as in the first embodiment, it is possible to protect the hologram and suppress the damage of the hologram in the steps of heating and applying a pressure, for example, at the time of the production. 
     Fourth Embodiment 
     A fourth embodiment of the present invention will be described below. 
       FIG. 7A  and  FIG. 7B  are a top view and a cross-sectional view of a card  401  of the fourth embodiment. 
     A card substrate  410  differs from that of the first embodiment in that a print layer  411  is provided. 
       FIG. 7A  and  FIG. 7B  illustrate an example in which a name of a card owner is printed on the print layer  411 . It is not limited thereto, but it may be alternatively possible that a finer background, micro-printing or the like is provided thereon. Although the description is not presented, the print layer  411  is provided through printing on a substrate sheet material  10 A at the time of producing the substrate sheet material  10 A (see  FIG. 2 ). The card substrate  410  may have any color in place of black. 
     An upper print layer  431  is not provided with a transition portion  31   c  and is printed with only a character  431   a , a graphic  431   b  and the like necessary for the transparent sheet material. That is, a transparent surface is exposed at background regions except for the character  431   a  and the graphic  431   b . Accordingly, the card substrate  410  is visually recognizable (see an arrow C), and an edge portion  22   b  of a hologram layer  22  is also visually recognizable. 
     As described above, the card  401  of the fourth embodiment, which is configured so that an upper surface of the card substrate  410  and the print layer  411  on the card substrate  410  are visually recognizable, differs from the other embodiments described above. For example, when a photograph of card owner&#39;s face is provided on the print layer  411 , the card  401  is suitable for a certificate or the like. 
     The configuration of the fourth embodiment is also applicable to the second and third embodiments. 
     While the embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments, and may be modified into various forms like the following modified example. The modified example will also be included in the technical scope of the present invention. Also, the effect of the embodiments is merely the preferred effect obtained from the present invention, and the effect of the present invention is not limited to the effect described in the embodiments. Furthermore, the above-described embodiments and the following modified example may be used while being appropriately combined with each other, but a detailed description thereof will not be provided. 
     (1) In the embodiments, the example has been illustrated in which the hologram layer is a Lippmann type hologram, but it is not limited thereto. For example, the hologram layer may alternatively be an emboss type hologram. 
     (2) In the embodiments, the example has been illustrated in which the transition portion does not overlap with the image portion of the hologram, but is not limited thereto. The transition portion may overlap with the image portion of the hologram and may be configured to have a less dense color as the transition portion reaches more inside the image portion. In this case, the image is seen in such a manner that the image is blurred at a periphery thereof and becomes sharper as reaching inside by the transition portion. 
     (3) In the embodiments, the example has been illustrated in which the card has the hologram layer, but is not limited thereto. For example, the card may be used in cash vouchers or the like. 
     (4) In the embodiments, the example has been illustrated in which the card is produced with the multi-face layout using the sheet materials, but is not limited thereto. The card may alternatively be produced in the form of a single body. In this case, sheet materials constituting a single card may be laminated. In this case, the transparent sheet layer itself laminated with one hologram layer may be used as the hologram laminated sheet material laminated with one hologram layer. 
     (5) In the embodiments, the example has been illustrated in which the printing is performed on the card substrate in the range not overlapping the hologram layer, but is not limited thereto. When the printing is performed on the card substrate so as to overlap the hologram layer, the hologram image and the printing are observed overlapped, thereby improving the design. Furthermore, in this case, it is possible to increase security since forgery becomes difficult. 
     EXPLANATION OF REFERENCE NUMERALS 
     
         
         
           
               1 ,  301 ,  401  CARD 
               10 ,  410  card substrate 
               10 A substrate sheet material 
               12  lower print layer 
               20  transparent sheet layer 
               20 A,  220 A,  320 A hologram laminated sheet material 
               21  HS layer 
               22  hologram layer 
               23  PC layer 
               30  print sheet layer 
               30   a  magnetic stripe 
               30 A print sheet material 
               31 ,  331 ,  431  upper print layer 
               31   c  transition portion 
               31   g  window portion 
               223  PET layer 
               224  HS layer