JP3239729B2 - Verifier for sensitive characters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention verifies confidential characters such as signatures, personal identification numbers, account numbers, and the like which cannot be seen by the naked eye of confidential documents and invisible slips used for application forms such as cash cards and credit cards. It relates to a verifier.

[0002]

2. Description of the Related Art Conventionally, application forms, personal identification documents, medical certificates, confidential documents, and the like in which privacy information not to be known to a third party are generally stored in a safe after examination or circulation. It is. In particular, when applying for a cash card or credit card application to a bank or credit company, submit an application form that is a confidential document of personal information, including your personal identification number, bank account number, etc. ,
It is submitted to the member in charge of the screening and the screening is carried out to determine whether or not to join. After that, applications (confidential documents of personal information) were kept in a safe, etc., even after the card was issued, but there were many opportunities for third parties to see general applications. It was difficult to keep the confidentiality of personal information.

In order to protect the confidentiality of personal information, an image is formed using two or more colorants having a metameric property, so that images such as confidential characters cannot be confirmed with the naked eye. An image forming body which can be seen and confirmed as a different color under a light source having a filter or a desired spectral energy distribution is disclosed in
No. 37636 and Japanese Patent Publication No. 60-58711. Further, a verifier for an invisible slip (hereinafter referred to as an invisible slip) applying this metamerism has been put to practical use.

In recent years, confidential characters such as signatures and account numbers have been described using black ink containing carbon black. On the confidential characters, for example, three colors of yellow, magenta, and cyan ultraviolet curing process inks have been described. By sticking a shielding film with a visible light shielding layer printed with a mixed color ink, you cannot see confidential characters with the naked eye, and use an infrared sensor or infrared scope (CCD camera with sensitivity in the infrared light range) And a filter that cuts 850 nm or less, for example, a HOYA color filter IR-85), the infrared light is transmitted and reflected by the visible light shielding layer of the mixed color black ink, but contains carbon black. Black ink absorbs infrared light and can see through the underlying confidential characters. Referred to) is a real-Open No. 7-15362
And Japanese Utility Model Laid-Open Publication No. 7-15363.

[0005]

However, when both invisible slips and confidential documents described above are used in a bank or the like, it is necessary to prepare respective verifiers. In addition, since the infrared scope used as a verifier for confidentiality documents is expensive, the production cost of the verifier is also high. Furthermore, both verification forms need to be checked for confidential characters with their respective verifiers, complicating the verification work.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a verifier capable of verifying invisible slips and confidential characters invisible to the naked eye in a verification form of a confidentiality document with one verifier. To provide.

[0007]

In order to achieve the above object, a confidential character verifier of the present invention places a confidential document or an invisible slip on a base as shown in FIG. 1 or FIG. A mounting table that slides back and forth for verification, a halogen lamp that irradiates infrared rays through an irradiation lens in front of the mounting table, and almost at the center of a light-shielding plate provided above and parallel to the mounting table A fluorescent screen comprising a projection lens, above the projection lens, and provided in parallel with the projection lens,
A shielding plate having a window hole inclined in the direction of the fluorescent plate between the projection lens and the fluorescent plate, a black lamp for irradiating the inside with ultraviolet rays, and a reflecting mirror at a position facing the black lamp; A first verification window is provided on the side surface, a second verification window is provided in a lower middle part of the first verification window, and a cover having a lower end provided with an insertion slot for a verification form is provided.

The first verification window is provided with a dustproof transparent film, and the second verification window is provided with a desired red filter for an invisible slip.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on embodiments. FIG. 1 is an explanatory diagram showing a configuration of a verifier of the present invention, and FIG. 2 is an explanatory diagram showing a verification method as viewed from a side of the verifier. The verifier 30 of the present invention includes a mounting table 8 that slides forward and backward, a halogen lamp 15 that irradiates infrared rays through an irradiation lens 13, and a projection lens 5
A fluorescent plate 4 above the projection lens, a shielding plate 6a having a window hole m inclined in the direction of the fluorescent plate, a black lamp 6 inside the shielding plate, a reflecting mirror 3 at a position facing the upper surface, It comprises a first verification window 1 on the side surface, a second verification window 2 in the middle below the first verification window 1, and a cover 20 having a verification form insertion slot 8 at the lower end. The first verification window 1 is provided with a dustproof transparent film 1F, and the second verification window 2 is provided with a desired red filter 9F. The fluorescent screen 4 used in the present invention is a fluorescent screen 4 having a fluorescent layer 4a by applying a mixture of a general fluorescent substance and a trace amount of heavy metals on one surface of an opaque base material such as PET. Things.

[0010] The confidential character verifier of the present invention is a verifier that verifies confidential characters of confidential documents or invisible slips in which confidential characters of personal privacy information such as signatures, account numbers, and personal identification numbers are described. In this verification method, when verifying a confidentiality document, as shown in the schematic diagram of FIG. 3, a self-written signature or the like, which is a confidential character, is written using black ink containing carbon black. Verification of confidential documents in which confidential characters are made invisible by attaching a shielding film provided with a visible light shielding layer using a black ink (or gray) of a mixed color of yellow, magenta, and cyan, a curable process ink When placed on a container and irradiating the visible light shielding layer with infrared light from a halogen lamp, the infrared light hitting the visible light shielding layer is reflected, and the portion corresponding to the confidential character is absorbed. The reflected infrared rays are projected through the projection lens onto the fluorescent layer of the upper fluorescent plate. When the fluorescent layer of this fluorescent plate is irradiated with ultraviolet light by a black lamp, the fluorescent layer becomes a light-storing state, and due to the exhaustion effect, the reflected and projected infrared portion becomes dark,
Since the infrared rays are not reflected from the confidential character portion such as the signature, the light storing state is maintained. Therefore, the confidential characters that could not be seen can be confirmed from the first verification window through the reflection mirror by the fluorescent layer.

The above-described exhaustion effect of the fluorescent layer refers to a phenomenon in which, when ultraviolet light is applied to the fluorescent layer in a light-storing state and infrared rays are applied, the irradiated portion becomes dark. The fluorescent layer exhibiting this phenomenon is obtained by adding a trace amount of heavy metals (for example, Fe, Co, etc.) to a general phosphor. For example, when a small amount of Co is added to ZnS-Cu to the phosphor, the energy of the infrared light irradiated with Co is lost and the phosphor is exhausted. That is, by utilizing this phenomenon, it has become possible to verify the concealed confidential characters of the confidential document.

Although not shown, an invisible slip using two or more kinds of colorants having a metameric property is irradiated with infrared rays from a halogen lamp and a red filter (for example, SC filter, manufactured by Fuji Film Co., Ltd.). The confidential character can be verified from the second verification window through the Kodak Wratten filter.

[0013]

The verifier according to the present invention can be used as a single verifier regardless of whether both the invisible form and the confidential form are used, or the combined use of the confidential form and the invisible form as a single document. Thus, the invisible slip and the confidential character that cannot be seen with the naked eye of the confidentiality document can be verified. Therefore, the verification work can be simplified, and the work efficiency can be improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1 and FIG.
Reference numeral 0 denotes a mounting table 8 that slides back and forth,
A halogen lamp 15 for irradiating infrared rays through the projector, a projection lens 5 above, and a fluorescent plate 4 above the projection lens.
Plate 6a having a window hole m inclined toward the fluorescent plate
A black lamp 6 inside the shielding plate, a reflection mirror 3 at a position opposite to the first plate, a first verification window 1 at an upper side surface, a second verification window 2 at a lower middle stage, and a verification form at a lower end. And a cover 20 having an insertion opening 8. In addition, the first verification window 1 has a dustproof transparent film 1F.
In the second verification window 2, a desired red filter 9F is provided.

That is, the verifier 30 of the present invention mounts a confidential document or an invisible slip on a base and slides back and forth to verify confidential characters, and verifies in front of the mount. A protective cover 1 having a halogen lamp 15 for irradiating infrared rays on the surface of the form, and a radiation lens 13 for infrared irradiation on the front surface of the halogen lamp 15 is provided.
3a covers the halogen lamp. Further, a heat exhaust fan 16 for exhausting the heat of the halogen lamp is provided at the rear. The mounting table 21 and the halogen lamp 1
A light-shielding plate 5a is provided above and parallel to the mounting table 21, and a projection lens 5 for projecting infrared light reflected upward at a position near the center of the light-shielding plate is provided. The light-shielding plate 5a plays a role of condensing the infrared rays from the halogen lamp on the projection lens and not leaking the remaining infrared rays upward. Further, a fluorescent plate 4 having a fluorescent layer 4a facing downward is provided above the projection lens 5 and in parallel with the projection lens 5, and one side of the projection lens is provided between the projection lens 5 and the fluorescent plate 4. A shield plate 6a having a window hole m and inclined in the direction of the upper fluorescent plate 4 is erected on the light shield plate 5a, and a black lamp 6 for irradiating the inside with ultraviolet light.
It is provided with. The shielding plate is slightly inclined upward so that the ultraviolet light of the black lamp passes through the window hole m of the shielding plate 6a and hits the fluorescent layer 4a of the fluorescent plate 4 obliquely above. In addition, a reflection mirror 3 is provided on one side of the projection lens opposite to the black lamp 6 to capture a confidential character or the like projected on the fluorescent screen. The verification device is covered by a second verification window 2 and a cover 20 provided with an insertion slot 8 for inserting a verification form at the lowermost end.

On the inner side of the first verification window 1, a dustproof filter 1F made of a transparent film is provided.
A desired red filter 9F is provided on the inner side of the verification window 2 of FIG.
(Transmits infrared rays ) is attached.

A verification method using the verifier 30 is as follows.
When the power is turned on by the key switch 11, the mounting table 21 is pulled out, a verification form (security document) is mounted from the insertion slot 8, and when the mounting table is pushed in, the verification form is fixed at both ends by the leaf springs 8a. Next, when the halogen lamp 15 and the black lamp 6 are turned on by the push button switch 10, infrared rays are irradiated on the surface of the verification form by the halogen lamps. The other infrared rays are reflected and projected by the projection lens 5 onto the fluorescent layer 4a of the fluorescent plate 4. When the fluorescent layer 4a of the fluorescent plate is irradiated with ultraviolet light by a black lamp, the fluorescent layer enters a light-storing state, and due to the exhaustion effect, the reflected and projected infrared portion is darkened, and the secret characters are not reflected because the infrared light is not reflected, and the light-storing state is maintained. Therefore, the confidential character which cannot be seen by the naked eye can be confirmed from the first verification window through the reflecting mirror 3 by the phosphor layer in the light-storing state.

A method of verifying an invisible slip using two or more kinds of colorants having a metameric property is similar to the above-described method. The other parts reflect infrared light, and the confidential character part absorbs infrared light. Then, when viewed through the second verification window 2 through a desired red filter (for example, SC filter, manufactured by Fuji Film Co., Ltd., Kodak Wratten Filter, manufactured by Eastman Kodak Co., Ltd.), the password of the invisible slip is found. , Etc., can be verified with the naked eye because the confidential character portion looks black.

[0019]

As described above, the present invention has the following effects. In other words, in order to verify the confidential characters of the confidentiality document, it is also possible to perform verification using infrared light of a halogen lamp, and since a halogen lamp is used as a light source in verification of an invisible slip,
By sharing the light source, it becomes possible to verify the confidential characters of the two types of verification forms with one verifier. In addition, since the security-preserving document and the invisible slip can be verified by one verifier, the forms have conventionally been separately prepared, but can be combined into one form. Further, the verifier according to the present invention can use a fluorescent plate in which a small amount of heavy metals are mixed with a general fluorescent material to generate an exhaustion effect and clearly verify confidential characters of a security document by fluorescence emission. In addition, when a general phosphor is mixed with a trace amount of heavy metals, for example, Pb, Mn, etc., it is irradiated with ultraviolet rays to keep the phosphorescent state, and when irradiated with infrared rays, the irradiated portion becomes brighter. It is also possible to verify the sign portion that has become dark due to the stimulating effect of.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a perspective view of a verifier of the present invention.

FIG. 2 is an explanatory diagram showing a verification state by a verifier of the present invention as viewed from a side.

FIG. 3 is a schematic explanatory diagram of a method for verifying a confidential document in the verifier of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... 1st verification window part 1F ... Dustproof filter 2 ... 2nd verification window part 3 ... Reflection mirror 4 ... Fluorescent plate 4a ... Fluorescent layer 5 ... Projection lens 5a ... Light shielding plate 6 ... Black lamp 6a ... Shielding plate 7 ... Glow lamp 8 ... Insertion opening 8a ... Leaf spring 9F ... Red filter 10 ... Push button switch 11 ... Key switch 12 ... Pilot lamp 13 ... Irradiation lens 13a ... Protective cover 14 ... Temperature sensor 15 ... Halogen lamp 16 ... Exhaust heat Fan 17 ... Choke 18 ... Fuse box 20 ... Cover 21 ... Placement table 30 ... Verifier m ... Window hole

Claims (3)

(57) [Claims] 1. A confidential character written in black ink, a confidential document covered with a shielding film provided with a visible light shielding layer for concealing the confidential character, and two or more colorants having metameric properties. A verifier for verifying a confidential character such as a signature or a password of an invisible voucher formed of invisible confidential characters, before and after placing and verifying a confidential document or an invisible voucher on a base. Mounting table, a halogen lamp that irradiates infrared rays in front of the mounting table through an irradiation lens, and a projection lens almost above the mounting table and almost at the center of a light-shielding plate provided in parallel with the mounting table. A fluorescent plate provided above and parallel to the projection lens; a shielding plate having a window hole inclined between the projection lens and the fluorescent plate in the direction of the fluorescent plate; UV irradiation That a black lamp, a reflecting mirror at a position opposed to the black lamp, a second verification window and in its lower middle first verification window in the upper side,
A confidential character verifier characterized by being covered with a cover having an insertion slot for a verification form at the lower end. 2. The confidential character verifier according to claim 1, wherein a dust-proof transparent film is provided inside the first verification window. 3. A desired red filter for verification is provided inside the second verification window.
Verifier for confidential characters described in.