JPH0445997A - Card - Google Patents

Abstract

PURPOSE:To obtain a card utilizable as an admission ticket capable of displaying the time elapsed after issuing and informing the elapse of a predetermined time by forming a display part composed of a photochromic layer discoloring by the irradiation with light having a specific wavelength and restoring a color with the elapse of time on a base material composed of paper or plastic. CONSTITUTION:A character or pattern 6 is printed on both surfaces of a PET base material 2 and ink or paint prepared by dispersing or dissolving a reversible photosensitive material in arbitrary resin vehicle is printed or applied on a part of the surface of a card or on the entire surface thereof to provide a photochromic layer 5 becoming a display part 3 and a protective layer is provided to the upper surface of the display part 3. When the base material is paper, an acrylic binder may be applied to provide an anchor coat layer. At the time of the issuing of a ticket, the display part 3 of the card is irradiated with ultraviolet rays in quantity sufficient to generate discoloration for a definite time and, since the color of the display part restores a color by shielding ultraviolet rays, the elapse of a predetermined time can be known.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a card that is discolored by irradiation with light of a specific wavelength 9 and has a display section that displays the elapsed time until the color is restored by a change in color. In particular, it relates to cards that can be used for admission tickets that notify the elapsed time after ticket issuance.

<Prior Art> Conventionally, admission tickets are issued for admission to the target venue at an exhibition, an amusement park, or each pavilion therein.
It permits admission and proves admission. The front and back sides of admission tickets were used as design areas for text, designs, etc., or as informational notes, or the date and time of ticket issue was printed on them.

<Problems to be Solved by the Invention> However, as mentioned above, although the number of admission tickets issued can be controlled, the admission status cannot be controlled, and if tickets are issued at any time, the number of tickets issued can be controlled, but if tickets are issued at any time, The pavilion was limiting the number of visitors and had a capacity system, so those who were unable to enter had to wait their turn outside the venue. In other words, with conventional admission tickets, even if the ticket is issued early, you still have to line up to enter, which wastes your time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a card that can be used as an admission ticket and can display the elapsed time after ticket issuance and notify that a predetermined time has passed. .

Measures to Solve the Problems〉 A display section consisting of a photochromic layer that changes color when irradiated with light of a specific wavelength and has the function of recoloring with the passage of time. It is a card made by laminating a printed layer and a photochromic layer, which has the function of changing color when irradiated with light of a specific wavelength and returning to color over time, on a base material such as a paper or plastic film or sheet. It is a card with a display area formed on a base material such as a paper or plastic film or sheet, which changes color when irradiated with light of a specific wavelength5, and recolors over time. A card comprising a photochromic part having the function of Letters, designs, marks, etc. are formed on a substrate such as a photochromic part that changes color when irradiated with light of a specific wavelength and has the function of restoring color over time, and printing with ink etc. on areas other than the photochromic part. A card comprising a display part formed so that the photochromic part is almost flush with the photochromic part, and a printing part on which information corresponding to the display part is printed, on a base material such as a paper or plastic film or sheet. A display section is formed by successively laminating a printing layer, a photochromic layer that changes color when irradiated with light of a specific wavelength and restores color over time, and a printing section that prints information corresponding to the display section. 2. It is a card made of paper or plastic film or sheet that has letters, designs, marks, etc. formed on it and has the function of changing color when irradiated with light of a specific wavelength, and recoloring over time. A card comprising a photochromic layer, a display section in which a printed section using ink or the like is formed in a location other than the photochromic section so as to be substantially flush with the photochromic section, and a printing section that prints information corresponding to the display section. It is.

According to the card of the present invention, the color of the photochromic layer is changed by irradiating a certain amount of light of a specific wavelength onto the display section, and then the color is restored over time to notify that a predetermined time has elapsed. .

In addition, the printed layer provided at the bottom of the display part is a photochromic layer that changes color by irradiating a certain amount of light of a specific wavelength onto the display part, and the color is restored over time. When the printed layer becomes visible, it is announced that the predetermined time has elapsed.

In addition, by changing the density of the scales, patterns, letters, etc. provided in the printing layer in stages, the appearance of the printing layer due to the recoloring of the photochromic layer becomes gradual, and within the range of color change time, the appearance of the printing layer becomes gradual. The elapsed time will be announced.

In addition, by forming a photochromic part such as a picture or a letter, and forming the surrounding area with a printing part such as ink, the discolored photochromic part will be restored to color by irradiating the display part with a certain amount of light of a specific wavelength, and the surrounding area will be restored. If the color becomes the same as that of the printed part, it is announced that the predetermined time has elapsed.

Furthermore, since the elapsed time can be displayed in stages on the display, by providing information specifying the elapsed time on the side of the display, even one type of card can display the elapsed time according to the specified time. Can be specified on the card.

<Example> Hereinafter, the present invention will be explained in detail based on the drawings.

FIG. 1(a) shows a plan view of the card of the first invention, and FIG. 1(b) shows a sectional view taken along line >1 in FIG. 1(a). (1) is the card of the present invention, (2) is the card base material, (3) is the display part that characterizes the present invention, and (6) is other characters, pictures, etc. Everything except the display part (3) is known in conventional cards. The display section (3) is a photochromic layer (5) that develops, discolors, or changes color when irradiated with at least a certain amount of light of a specific wavelength, such as ultraviolet rays. This is to notify the elapsed time.

A suitable material for photochromic N (5) is a photochromic compound, and a typical example is a spiropyran compound. For example, to explain the color development and color recovery mechanism using formula (A), e this spiropyran compound has 5prr under visible light conditions.
opyran I is colorless, but ultraviolet hν (30
0 to 400 nm), a part of the pyran ring is cleaved.

1yti) cleavage occurs, photoisomerizes from the spiro type to the merocyanine type, and the reaction progresses toward the Merocyanine II dye, resulting in color development. The color, reaction rate, etc. of the compound vary depending on the substituent S of the compound (thoro group, halogen atom, alkoxy group, etc.) and the substituent R (methyl group, etc.), so materials should be selected arbitrarily depending on the usage conditions. It can be set by When irradiation with ultraviolet rays is stopped, a portion of the rings that have been cleaved by irradiation with heat or infrared rays will recombine, and the merocyanine type will be restored to the spiro type, and the original colorless 5
Return to piropyrral I. In the present invention, the material returns to its original colorless state by absorbing thermal energy at room temperature.

In addition to spiropyran compounds, thioindigo compounds,
0-nitrohenzene compounds, dithizone metal compounds,
Examples include triphenylmethane compounds, bis(triphenylimidazolyl) compounds, bis(tetraphenylvinyl) compounds, thionine compounds, viologen compounds, and quinone compounds. In addition to the above-mentioned photochromic compounds, it is also possible to use other compounds that exhibit similar properties. Furthermore, conventionally known inorganic photochromic compounds can also be used.

In this example, a photochromic layer (4) is provided by printing or applying ink or paint containing a reversible photosensitive material dispersed or dissolved in an arbitrary resin vehicle on a part or the entire surface of the card. ) or may be formed on transfer paper and transferred to the card surface. Characters, pictures, etc. are printed on the other card surfaces. A protective layer can also be provided on the upper surface of the display section (3) if necessary. When the card base material is paper, etc., an anchor coat layer coated with an acrylic binder etc. is used to prevent the contained solvent from affecting the color of the photochromic layer and to increase the adhesion between the photochromic layer and the card base material. It may be provided. Note that the structure of the card is very different from conventional cards (in addition to the above, for example, arbitrary characters, patterns, etc. are provided on the card base material, an overcoat layer is provided on both sides, and a display part is attached to at least one side of the card.) may be formed.

If the overcoat layer is made of a material that transmits the photosensitive wavelength of the photochromic layer, the display section may be provided below the overcoat layer.

To use it, when issuing a ticket, the display section (3) of the card is irradiated with an amount of ultraviolet light that changes color for a certain period of time, and then the color is restored by blocking the ultraviolet rays, allowing you to know when a predetermined period of time has passed.

For example, in Figure 1(a), 54 cylinders x 86 m x 0.
Information such as letters and patterns are printed on both sides of a PET (polyethylene terephthalate) base material (2) with the size of 188 plates using U offset printing, and UV light (approximately 350 nm,
) A photochromic layer (4) with rectangular or arbitrary characters, patterns, marks, etc. is formed by silk printing using an ink containing Subicobilan (photochromic compound), which develops from colorless to blue, mixed with an acrylic binder. (1) can be obtained.

This card (1) is exposed to ultraviolet light with a photosensitive wavelength of approximately 350 nm at a constant intensity (4 mW/cm2) and at a constant amount (80 mJ/cm2).
2) Irradiate to develop color. At this time, the photochromic layer (4) may be colored by irradiating letters, patterns, marks, etc. with ultraviolet rays, and the photochromic layer (4) may be colored in the form of letters, patterns, marks, etc. Also, the top surface of the photochromic N (4) may be coated with a known ultraviolet absorber (salicylic acid). By mixing a binder with a binder, etc., and printing or coating it in the form of letters, pictures, marks, etc., the letters, pictures, marks, etc. are blocked from ultraviolet rays. Photochromic N (4) may be colored. Approximately 3 hours after the UV irradiation was stopped, the photochromic layer (4) was almost completely discolored.

Note that the card base material (2) can be made of other materials than PET, such as resin compounds such as polyvinyl chloride, polyester, and polycarbonate, or paper. Further, as described above, the photochromic compound can be arbitrarily selected from among the various types according to color development, discoloration, discoloration, elapsed time, and sensitive wavelength range (ultraviolet rays, laser light, etc.).

FIG. 2(a) shows a plan view of a card of the second invention, and FIG. 2(b) shows a partially enlarged cross-sectional view taken along line J--J in FIG. 2(a). (11) is a card of the present invention, (1
2) is the card base material, (13) is the display part that characterizes the present invention, (16) is other characters, patterns, etc., and the display part (1
3) is a photochromic layer (1) made of a reversible photosensitive material.
5) shows a state in which the printed layers (14) are sequentially laminated. The reversible photosensitive material constituting the photochromic layer (15) is the same as that of the first invention described above. Print layer (14)
In this example, a picture of a donkey is drawn, but a solid color, letters, pictures, marks, etc. of a specific color as described below are formed and hidden by discoloration of the photochromic layer (14). The printed I'i!, which was no longer visible and was hidden with the restoration of color of the photochromic layer (15)! (14) Afterwards, letters, pictures, marks, etc. appear. The elapsed time is notified by the time from concealment of the printed layer (14) due to discoloration of the photochromic layer (15) to appearance of solids, letters, patterns, marks, etc. on the printed layer (14) due to restoration of color of the photochromic layer (15). It is something. The specific color of the printing layer (14) is determined by the photochromic layer (
It may be the same hue as the discoloration hue in step 15) or a different hue. By arbitrarily selecting the hue, the time required to distinguish the printed layer (14) through the photochromic layer (15) by the intensity of the hue of the color without changing the color recovery time of the photochromic layer (15), that is, the elapsed time. You can control your time. For example, the photochromic layer may have a different hue, such as green when the photochromic layer changes color, and yellow when the printing layer changes color.

Further, as shown in FIG. 2(c), by forming the color density of the display layer (13) and the printing layer (14) in a stepwise scale, the photochromic layer (15) is restored in color and the color density is increased. Solids, letters, patterns, marks, etc. of the printing layer appear in the order of the darkest parts, and the length of the appearing parts, letters, patterns, etc.
The passage of time is recognized by the amount of marks etc.

The photochromic layer (15) also has a plurality of hues.
The photochromic li
(15) is restored in color and the photochromic layer (15)
) The solid color, letters, patterns, marks, etc. of the printed part appear in the order of the stronger hue than the discoloration hue of ). For example, if the color change of the photochromic layer is blue, the printing layer should be red, yellow,
When composed of the three colors of blue, red, yellow, and blue become visible in that order as the photochromic layer restores color. This allows the elapsed time to be classified based on the time difference between the appearance of the printed portions, and it is possible to specify a certain range of elapsed time using -1 cards.

Furthermore, if different characters, patterns, etc. are formed on each part of the scale, it can be used as a timer that is easier to understand.

In this example, a printing layer (14) in which the elapsed time is divided according to a plurality of hues or color densities is provided on a part of the card, and a reversible photosensitive material [
A photochromic layer (14) is provided by printing or coating an ink or paint in which a photochromic material] is dispersed or dissolved in an arbitrary resin vehicle on a part or the entire surface of the card to form a display area (13). Alternatively, they may be formed on transfer paper and transferred to the card surface.

Characters, pictures, etc. are formed on the other card surfaces by printing. A protective layer can also be provided on the upper surface of the display section (13) if necessary. Although not shown in the drawings, the structure of the card is not much different from that of conventional cards, and in addition to the above, for example, arbitrary characters, pictures, etc. (16) are provided on the card base material, and an overcoat layer is provided on both sides of the card. The display section may be formed on one side.

To use it, when issuing a ticket, the display section (13) of the card is irradiated with an amount of ultraviolet light that changes color for a certain period of time, and then the color is restored by blocking the ultraviolet rays, allowing you to know when a predetermined period of time has passed.

For example, 54mm x 86+++m x in Figure 2 (C)
o, 188 rtm size PET (polyethylene terephthalate) base material (12) is UV offset printed with a scale with a stepwise change in color density using blue U ink and information such as letters and patterns on the remaining part. and ultraviolet rays (
A photochromic layer (15) is formed in the size of the printing layer (14) by silk printing using an ink containing an acrylic binder mixed with spiropyran (a photochromic compound) that develops a color from colorless to blue at a wavelength of about 350 nm),
Furthermore, photochromic I'! A transparent polyvinyl chloride film (17) is laminated on the top surface of (15) and heat laminated to obtain a card (11).

The card (11) is exposed to ultraviolet light with a photosensitive wavelength of approximately 350 nm at a constant intensity (4 mW/cm2) and at a constant amount (80 mJ/cm2).
”) to develop color. After stopping the ultraviolet irradiation, the photochromic N (1,5) is restored to color (colorless) and printed layers (14) appear in descending order of color, and this printed layer (14)
If the color density classification appears at regular time intervals in accordance with the restoration of color of the photochromic layer (15), it can be used as a guideline for the passage of time. In this case, a scale may be provided by printing on the outside of the display section.

Note that the card base material (12) can be made of other materials than PET, such as resin compounds such as polyvinyl chloride, polyester, and polycarbonate, or paper. As mentioned above, there are many types of photochromic compounds that can be used to develop color, change color,
It can be arbitrarily selected depending on decolorization, elapsed time, and sensitive wavelength range (ultraviolet rays, laser light, etc.).

FIG. 3(a) shows a plan view of the card of the third invention, and FIG. 3(b) shows a cross-sectional view taken along the line 3E(a). (21) is the card of the present invention, (22) is the card base material, (23) is the display part, and (27) is the display part (
23) shows a printing part for printing information corresponding to the part, and (26) shows other characters, pictures, etc. The display part (23) includes a photochromic layer (25) made of a reversible photosensitive material, a printing layer (2
4) are sequentially laminated, and the photochromic l'! The material constituting (25) is the same as the photochromic compound mentioned in the above first invention.

The printing layer (24) is the same as the second invention, and the printing layer (24) is the same as the second invention.
4) was hidden due to discoloration of Photochromic 1 (25) and became unrecognizable, and when the color was restored, the printing was hidden! (24) The elapsed time is notified by the time until the edge color, letters, patterns, etc. appear, and by forming the color density of the printing layer (24) in a stepwise scale shape, the photochromic layer 25) As the color is restored, the printing layer solids, letters,
A pattern, etc. appears, and by forming a printing layer (24) with a plurality of colors in the order of hues close to the discoloration hue of the photochromic layer (25), the photochromic 1!1 (25) is restored and the color of the photochromic layer (25) is restored. Solids, letters, patterns, etc. of the printing layer (24) appear with a hue stronger than the discoloration hue. Furthermore, the printing section (27) is provided parallel to the printing layer of the display section (23), and the elapsed time can be divided based on the time difference between the appearance of each part of the printing layer (24), and the elapsed time can be divided into sections. Information indicating the position of the printed layer (28
) by recording the arrow that is the photochromic layer (2
The elapsed time can be specified in multiple stages within a certain range using - cards without changing the time required for color restoration in 5). That is, the solid color, characters,
Information such as a solid color, symbol, character, etc. indicating the position of a pattern, etc. is recorded by a printer or handwritten, etc., and after being concealed by discoloration of the photochromic layer (25), the printed solid color, symbol, character, etc. indicate the printed layer (24). ) appears to notify the passage of the specified time. In addition,
It is preferable that the printing part (27) is thermally processed or printed to facilitate printing or handwriting.

In this embodiment, a printed part (24) in which the elapsed time is divided according to a plurality of hues or color densities is provided in a part of the card, and a reversible anti-glare material is applied to the upper part of this printed part (24) using any resin. A photochromic layer (25) is provided by printing or applying ink or paint dispersed or dissolved in a vehicle on a part or the entire surface of the card to form the display area (23), or each is formed on transfer paper. It may also be transferred to the surface of the card. Furthermore, the display section (23)
A printed portion (27) is provided along one side of the. Characters, pictures, etc. are formed on the other card surfaces by printing.

A protective layer can also be provided on the upper surface of the display section (23) if necessary. Although not shown, the structure of the card is not much different from conventional cards, and in addition to the above, for example, arbitrary characters, pictures, etc. (26) are provided on the card base material, overcoat layers are provided on both sides, and at least The above-mentioned display section and printing section may be respectively formed on one surface side.

To use it, when issuing a ticket, the display area (23) of the card is irradiated with ultraviolet light that changes color for a certain period of time, and the printing area (
27) When the elapsed time on the display is in a predetermined category,
Colors, symbols, and characters indicating characters, patterns, etc. are printed, and the color is restored by blocking ultraviolet rays, and the passage of a predetermined time can be known according to the instruction information printed on the printing part.

For example, 54 Peng X 86 +nm X in Fig. 3(a)
A printing part (27) is provided on the same plane on a PET (polyethylene terephthalate) base material (22) of the size of a 0.188 plate.Ink (Toyo SS Hikki Medium or Toyo T1007 Hikki Medium) is applied to the silk in a position parallel to the photochromic layer. Formed by printing, blue UV ink (
Toyo FDOLAPN) is used to apply UV light to the remaining parts of the scale where the color density is changed step by step.
Offset 1 - Printed. The photochromic J! 1 (25), a transparent polyvinyl chloride film (29) is further laminated on the top surface of the photochromic layer (25), heat lamination is performed, and a card (21) is formed.
can be obtained.

A card (21) is exposed to ultraviolet light with a photosensitive wavelength of approximately 350 nm at a constant intensity (4 m, W/cm2) and in a constant amount (80 mJ).
/cm”) at the same time, the photochromic layer (2
5) Print arrows on the printing part (27) using a thermal printer in accordance with the positions indicating the predetermined elapsed time of the printed layer (24) divided by the color density that is changed in stages and appearing in order as the color is restored. do.

After the ultraviolet irradiation is stopped, the photochromic i (25) is restored (colorless) and printed layers (24) appear in descending order of color, and the printed layer corresponding to the position of the arrow (2nd day) in the printed area appears. is to notify the passage of a predetermined time.

Note that the card base material (22) can be made of other materials than PET, such as resin compounds such as polyvinyl chloride, polyester, and polycarbonate, or paper. As mentioned above, there are many types of photochromic compounds that can be used to develop color, change color,
It can be arbitrarily selected according to decolorization, elapsed time, and sensitive wavelength range (ultraviolet rays, laser light, etc.).

FIG. 4(a) shows a plan view of a card of the fourth invention, and FIG. 4(b) shows a sectional view taken along line L-L in FIG. 4(a). (31) is a card of the present invention, (32) is a card base material, (33) is a display part that characterizes the second invention, and (36) is other characters, patterns, etc. Display section (33
) is a photochromic part (34) made of reversible photosensitive material such as letters, patterns, marks, etc.
), i.e. around letters, pictures, marks, etc., are formed with ink for gravure printing, silk printing, or offset printing so that the printed part (35) is almost flush with the surface of the photochromic part (34). has been done. The color of the photochromic part (34) differs from that of the printed part (35) due to discoloration, so characters 1, designs, marks, etc. can be seen.
The elapsed time is notified by the time it takes for the characters, patterns, marks, etc. on the display section (33) to disappear as the color becomes the same as that of the display section (33) and becomes unrecognizable. Conversely, the color of the photochromic part (34) when it changes color is the same as the color of the printed part (35), and when the color of the photochromic part (34) is restored, it becomes different from the color of the printed part (35) and can be identified. The elapsed time may be notified by the time taken until characters, pictures, marks, etc. appear on the display section (33).

Further, as shown in FIG. 4(c), on the same plane, photochromic 1 (34) and a portion other than the photochromic part [34] are colored with the same hue in stages according to the color density during discoloration. A display section (33) is provided in which a plurality of display sections (39) consisting of a printed section (35) and a display section (39) having different densities are arranged;
As shown in FIGS. 3(d) to 3(f), first, light of a specific wavelength is irradiated onto the display section (33), and the photocomic section (33) is
4), and as time passes, the color density of the photochromic part (34) is gradually changed as the photochromic part (34) recovers.The display part (4) matches the color of the surrounding printed part (35).
39), the elapsed time can be set based on the time difference between the display portions (39) that match the color that is being changed, and a certain range of elapsed time can be specified with - cards. In this case, it is necessary to form a display portion (39) with a printed portion (35) that matches the color change of the photochromic portion (34) so that the time can be displayed in each predetermined range. Note that a time scale may be provided on the display section (33) so that the time elapsed due to color restoration can be seen.

Furthermore, FIG. 5(a) shows a plan view of the card of the fifth invention, and FIG. 5(b) shows a sectional view taken along line MM in FIG. 5(a). (41) is the card of the present invention, (42
) is the card base material, (43) is the display part, (47) is the printing part that prints information corresponding to the display part (43), (46
) indicates other characters, pictures, marks, etc. Display section (43)
The photochromic part (44) of letters, pictures, etc. made of a reversible photosensitive material and parts other than the photochromic part (44), that is, the areas around the letters, pictures, etc., are printed with ink for gravure printing, silk printing, or offset printing. (45) is formed so as to be substantially flush with the surface of the photochromic portion (44). The material constituting the photochromic portion (44) is the same as the photochromic compound mentioned in the above first invention. As shown in FIG. 5(a), on the same plane, there is a photochromic part (44) and a part other than the photochromic part (44) with the same hue.
Mark 1 that changes the color density step by step according to the color density during discoloration
A display section (43) is provided in which a plurality of display sections (49) consisting of 11 sections (45) are lined up. By recording arrows, which are information (48) indicating the positions of the divided printing layers, the time taken for color restoration of the photochromic area (44) can be changed (e.g. by changing the photochromic substance, by changing the light of a specific wavelength for discoloration) As shown in FIGS. 5(c) to 5(e), first, the display section (43) is irradiated with light of a specific wavelength, and then the photochromic section is (44) changes color, and as time passes, the display area (49) indicated by the information (48) on the printed area (47) changes to the photochromic area (
The passage of a predetermined time can be known by matching the color of the surrounding printed area (45) whose color density has been changed stepwise with the restoration of the color of 44). In other words, it is possible to set the elapsed time classification based on the time difference for each display part (49) specified by the information (48) on the printing part (47) that matches the color that is being discolored, and - within a certain range with - cards. You can specify the elapsed time in multiple stages.

In a printing section (47) provided beside the printing section (45), information such as solid color, symbols, characters, marks, etc. indicating the position of the display section (49) is recorded by a printer or by hand. In addition, it is preferable that the printing part (47) is subjected to thermal processing or matte processing to facilitate printing or handwriting.

In this example, a photochromic part (44) such as letters or pictures is printed or applied on a part or the entire surface of the card using ink or paint containing a reversible photosensitive material dispersed or dissolved in an arbitrary resin vehicle. Department (
44) Printing area (45) with ink for gravure printing, silk printing, and offset printing around characters, patterns, marks, etc. Printing area where multiple elapsed times are set according to color density (45) so that it is almost flush with the surface of the photochromic part (44), and the display part (
43) is formed. Alternatively, each may be formed on transfer paper and transferred to the card surface. Show more @(43
) is provided with a printed portion (47) along one side. Characters, pictures, marks, etc. are formed on the other card surfaces by printing. A protective layer can also be provided on the upper surface of the display section (43) if necessary.

Although not shown, the structure of the card is not much different from that of conventional cards, and in addition to the above, for example, = 30 - arbitrary characters, patterns, marks, etc. are provided on the card base material, and an overcoat layer is provided on both sides of the card. The display section and the printed section may be formed on at least one surface thereof.

The method of use is to irradiate the display part (43) of the card with an amount of ultraviolet light that changes color for a certain period of time at the time of issuing the ticket, and also to irradiate the display part (43) of the card.
47) If the elapsed time on the display is in a predetermined category,
Colors, symbols, and characters indicating characters, patterns, etc. are printed, and the color is restored by blocking ultraviolet rays, and the passage of a predetermined time can be known according to the instruction information printed on the printing part.

Note that, contrary to the above display method, the photochromic section (4
4) The color at the time of discoloration is the same as the color of the printed part (45),
Along with restoring the color of the photochromic part (44), the printing part (
45) may be used as a notification that time has passed.

Further, as shown in FIG. 6, the card (51) of the first to fifth inventions (at least the display portion (53) having a photochromic layer) is irradiated with photosensitive wavelength light to be exposed. After that, by forming a coating layer (50) containing a material that blocks light in the photosensitive wavelength region and transmits light in the visible region, the photosensitive wavelength light absorbed by the photochromic layer after exposure is blocked, and the color is restored. This eliminates the effect on the time required for the elapsed time, and reduces the occurrence of gaps in the display of elapsed time.

Furthermore, FIG. 7 shows an example of a card case for storing the card of the present invention, which blocks light that exposes the photochromic layer, and allows the inner card surface to be visually observed from the outside of the case (60). For example, there is a case made of an ultraviolet cut film made of plastic (vinyl chloride, etc.) to which an ultraviolet absorber ((salicylic acid type, benzophenone type, benzotriazole type)) is added or coated.

Effects> According to the card of the present invention, by irradiating a certain amount of light of a specific wavelength onto the display section, the color of the photochromic layer is changed, and then the color is restored over time, making it possible to tell when a predetermined time has passed. Furthermore, the printed layer provided at the bottom of the display section will recover its color over time, and if the printed layer becomes visible from the top surface of the display section through the photochromic layer, it will be possible to know that a predetermined period of time has elapsed. It is possible to know when a predetermined period of time has passed by the matching or difference in color over time between the photochromic part and the printing part, which are placed on the same plane of the card, and also by checking the scales, patterns, characters, etc. provided on the printing layer. By changing the color density stepwise, the appearance of the printed layer due to recoloring of the photochromic layer becomes stepwise, and it is possible to know the elapsed time stepwise within the range of color change time.

Furthermore, since the elapsed time can be displayed in stages on the display, by providing information specifying a specific elapsed time on the print section on the side of the display, each card can be You can specify different times.

When the card of the present invention is applied to an admission ticket, it is possible to limit the number of people allowed to enter an admission venue, and to specify the waiting time of the people to wait in advance, thereby eliminating wasteful waiting time.

Furthermore, since the elapsed time can be displayed separately on the cards, it is possible to divide the elapsed time into fixed time periods and specify waiting times for each number of people to enter the venue.

[Brief explanation of the drawing]

FIG. 1(a) shows a plan view of the card of the first invention, FIG. 1(b) shows a sectional view taken along line >1 of FIG. 1(a), and FIG. FIG. 2(b) shows a partially enlarged cross-sectional view of the second section (a) taken along line l-J, and FIG. 3(a) shows a plan view of the card of the third invention. FIG. 3(b) shows a cross-sectional view taken along the line - in FIG. 3(a), FIG. 4(a) shows a plan view of the card of the fourth invention, and FIG. Figure 4(b) shows a partially enlarged sectional view taken along the line L-L in Figure 4(a), and Figure 4(c)
4(d) to (f) show changes in the display portion of the card according to the present invention due to changes over time after being irradiated with light of a specific wavelength, and FIG. 5(a) shows another example. shows a plan view of the card of the fifth invention, FIG. 5(b) shows a cross-sectional view taken along line MM in FIG. 5(a), and FIGS. ) shows how the display section of the card of the present invention changes over time after being irradiated with light of a specific wavelength, and FIGS. 6 and 7 show usage examples of the card of the present invention. (1), (2), (3), (2nd) (21), (31), (41) ...... Card (22), (32), (42) ... ...Card base material (23), (33), (43) ...Display section (24) ...Photochromic layer ...
Photochromic part...Printing layer...Printing layer (26), (36), (46)...Characters, patterns, marks, etc.・・・・・・
...Printing section...Instruction information...Display section Patent applicant Toppan Printing Co., Ltd. Representative Kazuo Suzuki Ma μtsu'7")(") -heheheheji) co Sa~ ~ h+,. 2. Name of the invention card 3. Date of amendment order by the person making the amendment August 28, 1990 (all sending dates) 5. Subject of amendment "Figure 2 (c) ) shows a top view of a card according to another embodiment and inserts ``.

Claims (10)

[Claims] (1) A display section is formed on a base material such as a paper or plastic film or sheet, and is made of a photochromic layer that changes color when irradiated with light of a specific wavelength and has the function of restoring the color over time. card. (2) At least a printed layer and a photochromic layer, which has the function of changing color when irradiated with light of a specific wavelength and restoring color over time, are sequentially laminated on a base material such as a paper or plastic film or sheet to form a display area. A card that is characterized by forming and becoming. (3) A display formed by sequentially laminating at least a printed layer and a photochromic layer, which has the function of changing color when irradiated with light of a specific wavelength and restoring its color over time, on a base material such as a paper or plastic film or sheet. 1. A card comprising: a display section; and a printing section that prints information corresponding to the display section. (4) The printing layer has the same color change hue as the photochromic layer, and has a scale in which the color density is changed stepwise or a plurality of patterns, characters, etc.
A card according to claims 2 and 3, characterized in that the card is formed with a mark or the like. (5) The printing layer is formed of a scale formed stepwise by a plurality of colors having similar hues in response to the discoloration hue of the photochromic layer, or a plurality of patterns, characters, marks, etc. are formed stepwisely for each color having a similar hue. A card according to claims 2 and 3, characterized in that: (6) A photochromic part that has the function of forming letters, designs, marks, etc. on a base material such as a paper or plastic film or sheet, which changes color when irradiated with light of a specific wavelength, and restores the color over time; 1. A card characterized in that a display portion is formed in a location other than the photochromic portion so that a printed portion using ink or the like is substantially flush with the photochromic portion. (7) A photochromic part that has the function of forming letters, designs, marks, etc. on a base material such as a paper or plastic film or sheet, which changes color when irradiated with light of a specific wavelength, and restores the color over time; A card comprising: a display section in which a printed section using ink or the like is formed at a location other than the photochromic section so as to be substantially flush with the photochromic section; and a printing section that prints information corresponding to the display section. . (8) A plurality of display parts consisting of a photochromic part and a printed part of a color corresponding to a change in color density of the photochromic part at a location other than the photochromic part in accordance with a gradual change in color of the photochromic part. A card according to claims 6 and 7, characterized in that it is provided with a card. (9) The printed portion is a symbol, a pattern, a character, a color, or a mark that specifies a part of the scale, a pattern, a character, a mark, etc. displayed on the display portion. Cards described in Sections 3 and 7. (10) A display section is formed on a base material such as a paper or plastic film or sheet, and has a photochromic layer that changes color when irradiated with light of at least a specific wavelength and has a function of restoring the color over time, and at least Claims characterized in that a coating layer made of a light-shielding material is formed on the display section to cover the surface of the display section after being irradiated with light of the specific wavelength and to block light of the specific wavelength. Cards described in Items 1 to 3, 6, and 7.