JP3295610B2 - How information is recorded - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recording image information, and more particularly to a method for recording information by simultaneously recording the same image information magnetically and simultaneously using an infrared absorbing dye. The present invention relates to a method for recording image information, which is capable of easily confirming falsification of recorded information and forgery of an information recording card or the like by maintaining accuracy and collating both recorded information.

[0002]

2. Description of the Related Art Conventionally, bank passbooks, checks, air tickets, road tickets, tickets, admission tickets, prepaid cards, etc.
Telephone rate cards, ticket purchase cards, admission ticket purchase cards, play fee cards, etc. and identification cards, tickets or cards related to bank automatic payment such as bank deposit number cards, etc., as well as confidential documents, materials, information, etc. Image information such as letters, numbers, symbols, patterns, etc. recorded by the company may need to be kept confidential to third parties and concealed so as not to be misused. In many cases, magnetic ink is used to record the information Magnetic recording is used.

[0003]

However, in an information recording system using magnetic ink, the magnetic strength changes when the magnetic material used is exposed to heat or placed in an environment with a strong magnetic field. Or the magnetism disappears. There is also a problem that information is read or falsified. In order to prevent counterfeiting of commuter passes, etc., an optical recording layer consisting of a magnetic recording layer, an infrared reflection layer, and an infrared absorption layer provided thereon is provided on the base, and hidden characters and Although securities for recording patterns and the like are disclosed in Japanese Patent Application Laid-Open No. 61-297192, this document does not disclose prevention of falsification of recorded information.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method of recording information on a ticket or a card which can ensure the accuracy of the recording of the information and which can easily confirm the falsification of the recorded information and the forgery of an information recording card. To provide.

[0005]

The above object is achieved by the present invention described below. That is, the present invention relates to a method of recording information on the same substrate of a ticket or a card using a magnetic material and a material containing an infrared absorbing dye, respectively. The layer is recorded by a magnetic recording device, and the other is substantially indistinguishable or difficult to visually discriminate with the naked eye by using an ink for ink containing a black infrared absorbing dye by an on-demand ink jet printing method on a substrate. after recording, the small
At least in the information recording area recorded using the above ink
Represents 2-hydroxy-α-benzen as a coupling component
Use azocarbazole-carboxylic amide or a derivative thereof.
A method of recording information characterized by forming a concealing layer containing an azomethine pigment used and making it possible to confirm tampering or counterfeiting of a ticket or card by comparing both recorded information and others
One at least as a coupling component
2-hydroxy-α-benzocarbazole-carboxylic acid
Contains azomethine pigment using amide or its derivative
The above ink is used on a substrate on which a concealing layer to be formed is formed in advance.
And recorded so as to be virtually indistinguishable or difficult with the naked eye
This is a method for recording information characterized by the following.

[0006]

Next, the present invention will be described in more detail with reference to preferred embodiments. The feature of the present invention is that, by recording on a magnetic recording layer provided on an arbitrary substrate and recording with an infrared absorbing material, individual information different for each ticket or card is duplicated by duplicating the same information for each ticket or card. Thus, when there is an unconscious or conscious change in one of the recorded information, it can be confirmed. In particular, recording by ink jet printing method, made work of also printing the original installation of a dedicated printing press
Also not necessary, recorded in addition to the high immediacy, the record is because it is irreversible, conscious information modification such as erase is difficult. Further, in the recording by the infrared absorbing material, if necessary, it is possible to visually hide or deceive the image information recorded by superimposing a concealing layer containing an infrared reflective dye on the recording portion. is there.

The substrate used in the present invention includes:
For example, paper, synthetic paper with synthetic fibers, synthetic paper, polyester,
A conventionally well-known recordable or recordable substrate such as a plastic film or sheet of polyimide, polyethylene, polystyrene, nylon or the like is used. The shape of the base to be used includes, for example, a card cut to an arbitrary size in addition to various standardized sizes.

In the present invention, the magnetic recording layer provided on the base is conventionally known as an information recording layer for commuter passes, various cash cards, and the like. , Γ-iron oxide,
A known material such as cobalt-modified γ-iron oxide is used.
The magnetic recording layer is formed by adding these magnetic materials to a vehicle or an aqueous emulsion comprising a binder and an organic solvent used in the production of a normal magnetic recording medium such as a vinyl chloride-vinyl acetate copolymer, and a plasticizer, a lubricant, and a charging agent. It is formed by applying a magnetic coating liquid dispersed in a material to which an inhibitor or the like has been added to a substrate. In order to disperse the magnetic material, a dispersing machine such as a ball mill, a roller mill, a sand mill, and a vibration mill is generally used. The obtained magnetic coating liquid is applied to a substrate using, for example, a gravure coater, a reverse roller coater, a doctor blade coater, or the like, and is dried after passing through a magnetic field before the coating liquid is dried.

The magnetic recording layer may be formed on a substrate by vacuum deposition, sputtering, plating, or the like using a metal or alloy such as iron, iron-cobalt, iron-chromium, and cobalt-chromium.

[0010] Information recording on a substrate by an infrared absorbing material is performed by on-demand type ink jet printing using an ink for ink jet containing an infrared absorbing dye or an infrared reflective dye used together with the dye as needed. Implemented using a scheme. In the latter case, other conventionally known recording methods can be used.

In the present invention, the infrared-absorbing dye used for recording image information such as characters, numbers, and patterns has a large absorption in an infrared region used for detecting (reading) recorded information. It is necessary that the reflectivity of the infrared light is distinctly low or hardly reflective.
As such an infrared-absorbing dye, conventionally known pigments or dyes having the above properties can be used. For example, carbon black pigments, aniline black pigments, iron oxide black pigments, titanium oxide black pigments, and spinel A black pigment such as a mold structure type black pigment may be mentioned, and a particularly preferred black pigment is a carbon black pigment.

At least a portion of the substrate on which information is to be recorded in order to make the image information recorded with the ink for ink jet containing an infrared absorbing dye visually invisible or deceptive and indistinguishable. It is necessary to form a concealing layer containing an infrared-reflective dye or an intermediate thereof in advance, or after information has been recorded with the ink. The concealing layer is preferably provided on the entire surface of the substrate where the information recording portion is located, in order to conceal the existence of the information recording portion itself on the substrate.

As the infrared-reflective dye or the intermediate thereof used for forming the hiding layer, conventionally known dyes or intermediates having such properties can be used. Phthalocyanine type, azo type, azomethine type, azomethine azo type, anthraquinone type, perylene / perinone type, indigo / thioindigo type, dioxazine type, quinacridone type, dipyrrolopyrrole type, isoindoline / isoindolinone type, triphenylmethane phthalide Pigments and dyes such as a series leuco dye and a fluoran leuco dye, and intermediates thereof, and these can be used alone or in combination of two or more. The triphenylmethane-phthalide leuco dye is used as a dye which develops a stable and thermosensitive color developing from colorless to colored. Crystal violet lactone develops blue color, rhodamine lactam develops red color, and fluoran black leuco dye develops black color in visible region and shows reflectivity in infrared region.

Among the above-mentioned infrared-reflective dyes or intermediates, particularly preferred dyes having an azomethine group or intermediates thereof include, for example, JP-A-58-174446, JP-A-59-4775, and JP-A-59-4775. No. 106381
No. 6, specification No. 1052019, specification No. 1
No. 141514, Patent No. 11411515, Japanese Patent Application No. 60-168540, Japanese Patent Application No. 60-168540.
Dyes and intermediates disclosed in 277929.

In particular, an azo pigment using 2-hydroxy-α-benzocarbazole-carboxylic acid allylamide and its derivative as a coupling component shows a dark blue to black color tone under visible light, and particularly has a blackness of black in black. This is preferable because it shows high vivid black color. Among them, dark blue having an azomethine azo group described above
Black pigments are excellent in heat resistance, light resistance, water resistance, and chemical resistance, and have higher coloring power. In addition, pigment-type dyes exhibit extremely excellent solvent resistance.

The above are examples of the infrared-reflective dyes and intermediates thereof particularly preferably used in the present invention. In the present invention, other dyes and mixed colors such as red,
A compound color obtained by appropriately mixing blue, yellow, orange, purple, and brown dyes can also be used as the infrared reflective dye.

In the present invention, the term "infrared reflective dye" refers to a case where the dye itself reflects infrared light, and a case where the dye itself transmits infrared light, for example, a paper or plastic sheet, Infrared rays are reflected by a metal or the like, and both dyes having a property of emitting infrared rays through the colored portion again are meant. Accordingly, in the present invention, a dye having a high infrared transmittance is also included in the "infrared reflective dye" of the present invention, and is preferably used because it is used for superposition with an infrared absorbing dye layer.

The dyes or intermediates thereof used for recording information and forming the concealing layer are all used as inks for ink jets containing them. The concealing layer can also be formed using an apparatus such as an electronic copying machine or a thermal transfer printer using a dry developer or a thermal transfer ink ribbon containing the above-mentioned dye or an intermediate thereof. In view of the fact that the formation of the opaque layer can be performed using the same apparatus, it is preferable that both the recording of the information and the formation of the concealing layer are performed using the ink for ink jet.

The ink jet ink used in the present invention is used, for example, as an ink having the same configuration as the ink jet ink conventionally used in an ink jet printer. The ink for ink jet is usually composed of a colorant, a solvent, a binder resin, an auxiliary, an additive and the like.

Ink jet inks are used, for example, in aqueous systems as aqueous solution systems, aqueous emulsion systems, aqueous dispersion systems, or mixtures thereof. In oil systems, they can be used as oil solution systems, oil emulsion systems, and oil systems. It is used as a dispersion system or a mixture thereof.

As the binder resin component used in the above ink for ink jet, any resin conventionally used in the production of ink for ink jet can be used, and as the water-soluble resin, for example, casein, Sodium alginate, gum arabic, ethylcellulose, hydroxyethylcellulose, polyvinyl alcohol, water-soluble salt of styrene-maleic ester copolymer, water-soluble salt of (meth) acrylic ester (co) polymer, styrene- (meth) acryl Water-soluble salt of ester latex, water-soluble alkyd-based resin, styrene-butadiene-based copolymer latex, (meth) acrylic-ester-based copolymer latex, styrene- (meth) acrylic-ester-based copolymer latex, ethylene-vinyl acetate Copolymer latex, poly Styrene-based dispersion of the ethylene copolymer dispersion and the like.

Examples of the oily binder resin component include a cellulose acetate butyrate resin, a nitrocellulose resin, a vinyl acetate (co) polymer, a styrene (co) polymer, and a vinyl chloride-vinyl acetate copolymer. Polymer,
Polyvinyl butyral resin, alkyd resin, phenol-modified alkyd resin, styrenated alkyd resin, amino alkyd resin, polyester resin,
Polyurethane-based resin, acrylic polyol urethane-based polymer, soluble polyamide-based polymer, phenolic resin,
Rosin-modified maleic resin and the like can be mentioned.

In the present invention, the same information is recorded on the magnetic recording layer using a normal magnetic recording device,
By using an on-demand type ink-jet printing system, the above-mentioned infrared-absorbing dye-containing ink for ink jet is used to print at a predetermined position on a substrate, thereby performing double recording. By duplicating the same information in this way, not only the accuracy of the information recording is maintained, but also the recording with the ink is immediate and irreversible, and the hiding layer is Since it exists, it is practically impossible to tamper with it. Even if a magnetic record is tampered with, it is possible to easily confirm the presence or absence of tampering by comparing both records. Further, recording with the ink is indistinguishable or difficult with the concealing layer with the naked eye, but can be read using an infrared reader.

[0024] In the present invention, the arrangement of the information recording recording portion by the ink-jet ink containing a magnetic recording layer and an infrared-absorbing dye on a substrate is not particularly limited, for example,
The magnetic recording layer is provided on the magnetic recording layer on one surface of the substrate, or a recording portion of the ink is provided on the magnetic recording layer in an overlapping manner, or vice versa.
Examples of the arrangement include providing a recording portion using the ink on the other surface, and separately providing a magnetic recording layer and the recording portion on different portions on the same surface of the substrate.

As described above, the image information recorded with the ink is indistinguishable or difficult to determine with the naked eye. The target, that is, the reflectivity of the colored surface (concealing layer) provided for concealment or deception in the visible light region with respect to infrared rays and their degree can be read and confirmed by an infrared reader, an infrared photograph, or the like. Magnetically recorded information can be confirmed by a magnetic reader.

For example, in an infrared reader, first, 700
Using a near-infrared light emitting diode that emits near-infrared light of up to 900 nm, these infrared rays are radiated to the corresponding portion or the entire surface of the substrate as it is or in a form in which the sensitivity of light reception is increased by adding modulation. By the irradiation of infrared rays, the substrate, for example,
In areas where image information is recorded on a paper or card with a developer containing an infrared-absorbing dye, the irradiated infrared light is absorbed and little or no light reaches the infrared light receiving sensor. Is very slight, and the generation of an electric signal in the light receiving sensor is zero or extremely weak. On the other hand, in a colored portion (hiding layer portion) where no image information is recorded, infrared light is reflected and received by the light receiving sensor, and is converted into an electric signal indicating the reflection. These electric signals are connected to various recognition methods such as a display using a cathode ray tube and recognized as clear information.

When recording information according to the present invention, it is necessary to record exactly the same information twice as described above in order to maintain the accuracy of information recording. In order to check forgery of a ticket or a card, it is not always necessary to make all the information to be recorded the same, and it is sufficient if there is common information. That is, in the latter case, at least the core information must be double-recorded according to the ticket or card to be used. For example, in a regular ticket, a boarding section, a boarding period, a user name, and a regular ticket No. may be items to be recorded twice.

[0028]

The present invention will be specifically described below with reference to examples. In the following description, parts and% are based on weight unless otherwise specified.

Example 1 5 parts of a carbon black pigment as an infrared absorbing dye,
An aqueous pigment dispersion having a composition comprising 2 parts of a diethanolamine salt of a styrene-methacrylate copolymer resin, 20 parts of ethylene glycol, 8 parts of glycerin and 65 parts of water was prepared according to a conventional method, and could not be dispersed by an ultracentrifuge. Removal of pigment particles, aqueous black ink for ink jet A-1
I got

Separately, 3- (4 ') as an infrared reflective dye
-Aminophenylimino) -1-oxo-4,5,6
7-Tetrachloroisoindoline is diazotized to give 2-hydroxy-α-benzocarbazole-3-carbo- (2
7.5 parts of an azomethine azo pigment obtained by performing a coupling reaction with 7-methyl-4'-methoxy) anilide, 3 parts of a diethanolamine salt of a styrene-methacrylate copolymer resin, 22 parts of ethylene glycol, 8 parts of glycerin and water 59 An aqueous pigment dispersion liquid consisting of 0.5 parts was prepared, and pigments that could not be dispersed were removed in the same manner as above to obtain an aqueous black ink R-1 for ink jet.

Solid printing was performed with an on-demand type ink jet printer having a piezo vibrator in which the above-described black developer R-1 was mounted on white paper, and the reflectance of the solid printed portion from the visible part to the near infrared part was obtained. Was measured with a Hitachi P330 type recording spectrophotometer. On the other hand, solid printing was performed on white paper in the same manner as described above using the above-described black developer A-1, and then black printing was performed on the white developer with the black developer R-1. The reflectance of the solid printed portion was measured in the same manner as described above. Table 1 shows the results.

As shown in Table 1, the solid printed portion of the black developer R-1 shows almost no reflection in the ultraviolet and visible portions, and shows a very high reflection in the near infrared portion. The solid printed portion of the black developer A-1 overlaid with the black developer A-1 did not show any reflection in all of the ultraviolet, visible, and near-infrared regions. Agent A-1 absorbs carbon black and shows black. The difference between the two reflectances is very large, and this difference makes it possible for the infrared reader to read the recorded information with the developer R-1.

[0033]

[Table 1]

The entire surface of the polycarbonate resin sheet cut to a suitable size was white-coated to a thickness of about 10 μm, 5.6 parts of γ-iron oxide, and a vinyl chloride-vinyl acetate copolymer. 4 parts, and diisobutyl ketone, methyl isobutyl ketone and Solvesso 100 as a solvent
A coating solution dispersed with 72 parts of a mixed solvent consisting of 15
Coating was performed with a thickness of about 10 μm and a width of 10 mm, and after orientation, the coating was dried to form a magnetic recording layer. The sheet was cut into a card having a width of 85 mm and a length of 57 mm including the magnetic recording layer.

The image information such as characters, numerals, symbols, and patterns is recorded at a position 20 mm away from the magnetic recording layer of the card by printing with the ink jet printer loaded with the black developer A-1. did. Next, using the same ink jet printer loaded with the above-mentioned black developer R-1, the entire solid was printed over the entire substrate.
Finally, exactly the same information as above was input to the magnetic recording layer of this card using a magnetic recording device.

When the magnetic recording of the above card was performed by a magnetic reader, it was possible to read the card sufficiently. However, the image information recorded with the black developer A-1 is
Although it was concealed by the developer R-1 and could not be recognized by the naked eye, clear reading was possible by using an infrared reader. As a result of collating the reading of both records, it was confirmed that the same information was recorded, as a matter of course.

The infrared reader is an infrared light emitting diode (for example, PTLN105 manufactured by Tokyo Shibaura Seisakusho).
To generate an infrared ray, modulate it to increase the luminous intensity, receive the reflected infrared ray with a light receiving sensor (for example, PTPS703 manufactured by Tokyo Shibaura Seisakusho), convert the presence or absence of reflection and the degree of reflection into an electric signal, The one that was able to recognize the information was used.

[0038]

As described above, according to the recording method of the present invention, the same information is recorded on the magnetic recording layer on the base of a ticket or a card, and at the same time, the same information is obtained by using an ink for ink jet containing an infrared absorbing dye. By recording the information twice, and further concealing or deceiving the recorded information with the ink, the information cannot be identified with the naked eye but can be identified only with infrared rays. Further, the information recorded by the ink is irreversible and cannot be altered. Therefore, even if the information recorded on the magnetic recording layer is damaged or changed, the information recorded by the ink remains, and it is easy to confirm the falsification of the magnetic recording or the forgery of the ticket or card by comparing the two recorded information. Can be. Therefore, the present invention provides a method for double-recording the same information to maintain the accuracy of information recording and to compensate for the disadvantages of magnetic recording in recording image information that requires a high degree of confidentiality. Very useful.

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-1-182097 (JP, A) JP-A-61-297192 (JP, A) JP-A 8-169192 (JP, A) JP-A-6-169192 322302 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B41M 3/14 B42D 15/10 531

Claims (2)

(57) [Claims] 1. A method of recording information on the same substrate of a ticket or card with a magnetic material and a material containing an infrared absorbing dye, respectively, wherein the same information is recorded on one side, and the other is a magnetic recording layer provided on the substrate. The other is recorded on a substrate in an on-demand type ink jet printing method using an ink for ink jet containing a black infrared absorbing dye so as to be substantially indistinguishable or difficult to visually recognize. After that, record using at least the above ink.
In the information recording part, 2-hydrogen was used as a coupling component.
Roxy-α-benzocarbazole-carboxylic amide or
Concealment Containing Azomethine Pigments Using Its Derivatives
A method for recording information , comprising forming a layer and collating the two pieces of recorded information so that tampering or forgery of a ticket or card can be confirmed. 2. Information is recorded on the same substrate of a ticket or a card.
Recording with an absorbent material and a material containing an infrared absorbing dye
The same information, one on the substrate
The magnetic recording layer is recorded by the magnetic recording method, and the other is
At least a part of the compound is a 2-h as a coupling component.
Droxy-α-benzocarbazole-carboxylic acid amide
Containing azomethine pigments or their derivatives
On-demand type ink jet printing is performed on a substrate on which a shielding layer is formed in advance.
Black printing infrared absorbing dye
Practically distinguished by the naked eye using ink for ink jetting
Record so that it is impossible or difficult, and compare both recorded information
To check for tampering or counterfeiting of tickets or cards
A method for recording information, characterized in that :