JP2002307877A - Card with indicating function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a card with indicating function which is broken so as not to permit to reuse the same or which makes it clear that a tape is tried to be stripped off when the tape, on which the rewrite material is applied, is stripped off once from a card substrate in order to make the tape, on which the rewrite material stripped off the card substrate is applied, unable to falsify the card or in order to make the manufacture of a forged card impossible. SOLUTION: In the card provided with a reversible indicating part constituted of a reversible recording layer, a sequentially laminated substrate film and an adhesive layer cut-ins are formed at a plurality of places on the substrate film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card with a display function provided with a reversible display unit capable of rewritably displaying display information such as service points.

[0002]

2. Description of the Related Art Conventionally, in a so-called rewritable card having a reversible display function on a card, for example, when a rewritable material whose display can be rewritten by a heating means is formed on a part of a plastic card such as PVC or polycarbonate. A tape coated with a rewritable material is formed on a polyester film having excellent heat resistance, and the tape is provided on a card substrate via a hot melt adhesive,
It is common to bond by hot pressing.

In the case where a conventional tape formed by applying a rewritable material on a polyester film is provided on a card substrate by hot pressing, information is written or rewritten by heating a display portion. In addition, when writing or rewriting this information, the polyester film absorbs the application of heat pressure and damage applied to the display unit, thereby preventing deformation of the card base material and falling off of the rewritable material from the card base material. There is an advantage that can be.

However, when an attempt is made to peel off a tape coated with a rewritable material from a card substrate for the purpose of falsification such as falsification of the contents displayed on a display unit, the strength of the polyester film increases. Because it has, it is possible to peel off the entire tape coated with the rewrite material that is the rewrite display portion as it is,
Since it is easy to replace a tape on which a rewrite material indicating another display content is displayed on the stripped portion, it is possible to perform a tampering operation. Further, since the tape coated with the rewrite material peeled off from the card base material can be pasted again to another card base material, there is a danger that it may be used when producing a counterfeit card.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to prevent a card from being falsified or a counterfeit card from being falsified with a tape coated with a rewritable material peeled off from the card substrate. Provided is a card with a display function that, when a tape on which a rewrite material is applied is peeled off from a material, the card is damaged so that it cannot be reused, and that it is possible to recognize that the tape has been peeled off.

[0006]

According to the present invention, there is provided a card having a display function according to the present invention, wherein the reversible recording layer, the base film, and the adhesive layer are provided with a reversible display section in which the base film is provided. Cuts are formed at a plurality of locations.

Further, the present invention is characterized in that the cuts form a plurality of straight lines, and the cuts are formed so as to be parallel and at regular intervals. Furthermore,
The present invention is characterized in that a plurality of the cuts are formed at a fixed length from a side portion of the base film. Further, the present invention is characterized in that a plurality of the cuts are formed between opposed side portions of the base film.

Further, the present invention relates to a card provided with a reversible display portion in which a reversible recording layer, a substrate film and an adhesive layer are sequentially laminated, wherein the adhesive layer comprises a plurality of linear adhesives. It is provided in an application part, and has a predetermined interval between the adhesive application parts.

Further, the present invention is characterized in that the plurality of linear adhesive application sections are applied in such a manner that adhesives having different adhesive strengths are alternately arranged.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of a card with a display function according to a first embodiment of the present invention, and FIG.
3 is a sectional view taken along line BB of FIG. 1, FIG. 4 is a plan view of a card with a display function according to a second embodiment of the present invention, and FIG. FIG. 6 is a plan view of a card with a display function according to the third embodiment, and FIG. 6 is a cross-sectional view taken along line CC of FIG.

First, a card 1A with a display function according to a first embodiment of the present invention will be described with reference to FIGS. The card substrate 2 of the card 1A with a display function includes, for example, a center core sheet 3 and transparent oversheets 4a and 4b on the front and back surfaces of the center core sheet 3, respectively.
Are laminated. The card substrate 2 is formed in a substantially rectangular shape, and a reversible display member 5 is provided in a band shape with a predetermined width in the longitudinal direction (the horizontal direction in FIG. 1) of the card substrate 2.

The resin used as the material of the center core sheet 3 and the transparent oversheets 4a and 4b is not particularly limited, but specific examples thereof include polyvinyl chloride resin, vinyl acetate resin, and vinyl chloride-vinyl acetate copolymer resin. , Butadiene resin, acrylonitrile-butadiene-styrene copolymer resin, polycarbonate resin, polyamide resin,
Synthetic resins such as cellulosic resins, polyesters, polyolefins such as polyethylene and polypropylene, polyvinyl alcohol, acrylic resins, polymethyl methacrylate resins, styrene resins, urethane resins, fluororesins and mixtures thereof can be mentioned.

When the center core sheet 3 and the transparent oversheets 4a and 4b are laminated by heating and pressing with a press, the reversible display member 5a is also placed on the oversheet 4a and heated simultaneously. It is provided inside the recess 6 for the reversible display member formed by pressing.

The reversible display member 5a is composed of a reversible recording layer 8 having a reversible recording material applied on the upper surface of a tape-like base film 7 made of a polyethylene terephthalate film having excellent heat resistance. An adhesive layer 9 made of a heat-sensitive adhesive provided on the lower surface of the film 7 and a protective layer 10 provided on a layer on which the reversible recording layer 8 is applied are laminated on each other.

Here, examples of the reversible recording material for the reversible recording layer 8 include JP-A-54-119377, JP-A-55-154198, JP-A-61-258853, JP-A-58-7683, JP-A-57-109695, JP-A-57-82086 to JP-A-82088, and the like. These materials reversibly change between a transparent state and a cloudy state due to heat, and at room temperature.
Polymer compositions that can retain their morphology are known.

For example, these materials become turbid when heated and cooled to a higher temperature T ₁ or higher at room temperature, and become transparent when heated to a temperature T ₂ higher than room temperature and lower than T ₁ and then cooled. Therefore, to form a heat-sensitive recording layer from these polymer compositions, the entire cooling after heating is a transparent film of this layer to the temperature T ₂ and higher than the room temperature lower than T _1,
White characters are formed by opaque and is printed with the transparent film by the thermal head or the like above T ₁ of the temperature. When heated to a temperature again T ₂ on the entire surface after the character forming these letters are erased, thereby enabling printing at a temperature of T ₁ again. The inverse total was temperature clouding T _1, it is also possible to print the outline character shape at a temperature of T _2.

Any of the polymer compositions having the above-mentioned physical properties can be used in the present invention. Preferred examples thereof include polyvinyl chloride, vinyl chloride-based copolymer, vinylidene chloride-based copolymer, and polyester. A thermoplastic resin such as a matrix material is used as a matrix material. The ratio of the matrix material to an organic low-molecular substance such as a saturated or unsaturated fatty acid having 10 to 30 carbon atoms, an ester, an amide or an ammonium salt thereof is expressed by weight. 3: 1 to 16:
1, preferably in the range of 6: 1 to 12: 1.

Further, a leuco reversible thermosensitive display may be provided instead of the above. In this case, a compound having a leuco dye and an acid group capable of coloring by heating the leuco dye and a hydrochloric acid group capable of decoloring by heating the leuco dye, or coloring by heating the leuco dye It is composed of a compound having an acidic group and a compound having a hydrochloric acid group capable of decoloring by heating a leuco dye, and a binder made of a polymer material or the like dissolved in water or an organic solvent.

The leuco dyes include 3-indolino-p
-Dimethylaminophenyl-6-dimethylaminophthalide, crystal violet lactone, 3-diethylamino-7-chlorofluoran, 2- (2-fluorophenylamino) -6-di-n-butylaminofluoran,
2- (2-fluorophenylamino) -6-diethylaminofluoran, 3-diethylamino-7-cyclohexylaminofluoran, 3-diethylamino-5-methyl-7-tert-butylfluoran, 3-diethylamino-
6-methyl-7-p-butylanilinofluoran, 3-
Diethylamino-6-methyl-7-anilinofluoran, 2-anilino-3-methyl-6- (N-ethyl-p
-Toluidino) -fluorane, 3-pyrrolidino-6-methyl-7-anilinofluoran, 3-pyrrolidino-7-
Cyclohexylaminofluoran, methyl-7-anilinofluoran, 3-N-methylcyclohexylamino-
6-methyl-7-anilinofluoran and the like can be used.

As the acidic group to be colored by heating the leuco dye, a phenolic hydroxyl group or a carboxyl group can be used. Further, as the hydrochloric acid group to be decolorized by heating the leuco dye, an amino group or the like can be used.

Examples of the amphoteric compounds having an acidic group and a hydrochloric acid group include aminophenols such as 2-aminophenol, 3-aminophenol and 4-aminophenol; 2-aminobenzoic acid, 3-aminobenzoic acid, -Aminobenzoic acid such as aminobenzoic acid; 2-hydroxy-3
-Aminobenzoic acid, 2-amino-3-hydroxybenzoic acid, 2-amino-4-hydroxybenzoic acid, 2-amino-4-aminobenzoic acid, 2-hydroxy-6-aminobenzoic acid, 3-amino-4 Hydroxyaminobenzoic acid such as -hydroxybenzoic acid and 3-hydroxy-5-aminobenzoic acid can be used.

As the compound having an acidic group, 2
-Hydroxybenzoic acid such as -hydroxybenzoic acid and 3-hydroxybenzoic acid; and hydroxysalicylic acid such as 4-hydroxysalicylic acid and 5-hydroxysalicylic acid can be used. Examples of the compound having a hydrochloric acid group include octylamine, nonylamine, benzylamine, 2-phenylethylamine, and 6-phenylhexylamine.

As the binder, methyl alcohol,
Polyvinyl alcohol, ethyl cellulose, cellulose acetate, nitrocellulose, polystyrene, polyviryl chloride and the like can be used. As the content of each of the above components,
For 1 part by weight of the amphoteric compound, 0.1 to 1 part by weight of a leuco dye and 2 parts by weight or less of a binder are mixed. And, for example, dissolving or dispersing the amphoteric compound, leuco dye, binder in water or an organic solvent, gravure printing,
Printing is performed on the support by a method such as offset printing or letterpress printing.

The principle of display and erasure in the leuco dye is as follows. By thermal energy, the phenolic compound opens the lactone ring of the colorless leuco dye and changes its color from colorless to colored. However, the organic compound in which the lactone ring is opened, upon contact with a basic substance, is closed to return to the original colorless leuco dye having a lactone ring. That is, by controlling the thermal energy, the lactone ring can be opened to form a colored compound or closed to return to a colorless compound. In other words, it exhibits a property of an acid by the action of heat or a color developer or a color-reducing agent for a leuco dye to show the property of a base. In addition to the above, a recording material in which liquid crystal is dispersed in a polymer compound or the like can also be used.

In the reversible display member 5a, the base film 7 has a plurality of cuts 11a, 11b inclined at a predetermined length from the upper side and the lower side of the base film 7, respectively. Is formed. The cuts 11a from the upper side of the base film 7 are formed in a plurality of straight lines so that the cuts are parallel and the intervals are constant. Also, the cut 11b from the lower side of the base film 7 is also a plurality of straight lines, each cut being parallel,
The interval is formed so as to have a constant interval.

Next, a card 1B with a display function according to a second embodiment of the present invention will be described with reference to FIG.
The card 1B with a display function according to the second embodiment is obtained by changing the cut into the tape-shaped base film 7 in the card 1A with a display function according to the first embodiment. That is, the display-equipped card 1 according to the second embodiment
In B, a plurality of linear cuts 12 are formed between the opposing side portions of the base film provided in a belt shape with respect to the base film 7, and the intervals between the cuts 12 are constant. It is formed so that it becomes.

When the substrate film is to be peeled off from either of both ends of the base film provided in a band shape by the cut 12, the base film is cut off from the cut 12 portion. In this state, the reversible display member 5a cannot be removed from the card base material 2.

Next, a card 1C with a display function according to a third embodiment of the present invention will be described with reference to FIGS. The card with display function 1C according to the third embodiment is
As the reversible display member 13 provided on the card base material 2, a reversible recording layer 15 in which a reversible recording material is applied on the upper surface of a base film 14 made of a polyethylene terephthalate film having excellent heat resistance, and a protective layer 16 Are sequentially laminated,
Further, a strong adhesive 17a and a weak adhesive 17b having different adhesive strengths are applied to the lower surface of the base film 14 in a state where the adhesives 17a and the weak adhesives 17b are linearly and alternately arranged, and the base film 14 is bonded to the card base 2. It has a modified structure.

[0029]

Example 1 A thermoreversible display resin having a thermoreversible dye dispersed in an acrylic resin on a film substrate made of a polyethylene terephthalate film having a thickness of 25 μm was formed to a thickness of 15 mm.
μ, and a protective layer made of urethane acrylate was further applied to a thickness of 5 μ. Next, a heat-sensitive adhesive made of a vinyl chloride / vinyl acetate copolymer was applied to the lower surface of the film substrate so as to have a thickness of 10 μm. Next, this was slit into a width of about 12 mm and processed into a tape shape.

Next, with respect to the reversible display member processed into a tape shape, about 3 mm from both ends in the longitudinal direction.
A sharp blade was pressed against the reversible display member at a position having a length of 3 mm and an interval of about 3 mm to form a plurality of cuts. At this time, the sharp blade was adjusted so as to cut only the heat-sensitive adhesive layer and the base film, and a cut was formed in the reversible display member so as to be in a so-called half-cut state.

Next, a tape-shaped reversible display member having a cut formed thereon is placed at a predetermined position on the card base material, and then heated and pressurized to perform heat fusion. To make a card. When the reversible display member processed into a tape shape was to be peeled off from the end of the card thus produced, it was broken by the cut formed in the film substrate and could not be completely peeled off.

[0032]

Example 2 A thermoreversible recrystallized resin obtained by dispersing behenic acid in a vinyl chloride-vinyl acetate copolymer resin was coated on a film base consisting of a polyethylene terephthalate film having a thickness of 25 μm to a thickness of about 10 μm. A thermoreversible display resin layer was formed by applying the protective layer uniformly, and a protective layer made of urethane acrylate was further applied to a thickness of 5 μm. Next, using a heat-sensitive adhesive made of a vinyl chloride / vinyl acetate copolymer on the lower surface of the film substrate, the heat-sensitive adhesive has a line-like gravure having a line width of about 2 mm and a pitch of about 3 mm. Printing was performed to produce a reversible display member sheet.

This reversible display member sheet is about 30 m long.
After cutting into a rectangle having a width of about 12 mm and a width of about 12 mm, a reversible display member sheet was placed on a card substrate made of an amorphous polyester resin, and heated and pressed to be heat-sealed to be integrated.
Then, a punched card was produced by a punching machine to a card size.

When the reversible display member was to be peeled from the card thus produced, fine cracks were generated in the thermoreversible display resin layer portion, and the polyethylene terephthalate film was broken depending on the method of peeling. In addition, the peeled thermosensitive reversible display part was white because the structure of the reversible display material was broken along with the shape of the adhesive, indicating that the peeling was performed at a glance, and was again attached to another card base material. However, uniform printing cannot be performed.

[0035]

As described above, according to the card with the display function of the present invention, when the tape on which the rewritable material is applied is to be peeled off from the card base, the tape is damaged and cannot be reused. There is an effect that it is possible to prevent falsification of the display and creation of a forged card. Further, since the cuts are formed in parallel and at regular intervals, there is an effect that the tape is easily damaged when the tape is peeled off.

Further, by forming a plurality of cuts with a fixed length from the side of the base film, the length of the cut becomes longer when the tape is peeled off. The effect is that the action has been performed. Further, by forming a plurality of cuts between the opposing side portions of the base film, the tape is easily cut off, and has an effect that the tape is easily peeled off in a part that cannot be reused.

Further, by providing the adhesive layer with a plurality of linear adhesive application portions at predetermined intervals, the portion where the adhesive is not applied is easily bent and cannot be reused. It has the effect of being easy. Furthermore, since a plurality of linear adhesive application sections are applied in a state where adhesives having different adhesive strengths are alternately arranged, the film substrate is easily damaged during peeling and is not easily reused. effective.

[Brief description of the drawings]

FIG. 1 is a plan view of a card with a display function according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a plan view of a card with a display function according to a second embodiment of the present invention.

FIG. 5 is a plan view of a card with a display function according to a third embodiment of the present invention.

FIG. 6 is a sectional view taken along line CC of FIG. 5;

[Explanation of symbols]

 1A, 1B, 1C Card with display function of the present invention 2 Card base material 3 Center core sheet 4a, 4b Transparent oversheet 5a, 13 Reversible display member 6 Reversible display member concave portion 7, 14 Base film 8, 15 Reversible recording Layer 9 Adhesive layer 10, 16 Protective layer 11a, 11b, 12 Cut 17a Strong adhesive 17b Weak adhesive

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 HA02 HB14 KA27 KA38

Claims (6)

[Claims] 1. A card provided with a reversible display portion in which a reversible recording layer, a base film, and an adhesive layer are sequentially laminated, wherein cuts are formed at a plurality of positions of the base film. Card with display function. 2. The card with a display function according to claim 1, wherein the cuts form a plurality of straight lines, and the cuts are formed in parallel and at regular intervals. 3. The card with a display function according to claim 1, wherein a plurality of the cuts are formed at a fixed length from a side portion of the base film. 4. The card with a display function according to claim 1, wherein a plurality of the cuts are formed between opposing side portions of the base film. 5. A card provided with a reversible display portion in which a reversible recording layer, a base film, and an adhesive layer are sequentially laminated, wherein the adhesive layer is provided on a plurality of linear adhesive application portions. A card having a display function, wherein a predetermined interval is provided between the adhesive application sections. 6. The card with a display function according to claim 5, wherein the plurality of linear adhesive application sections are applied in such a manner that adhesives having different adhesive strengths are alternately arranged.