JP2000126159A - Method of sampling finger print - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sampling method for finger prints which enables accurate sampling of a finger print of a human finger without fouling the finger during the operation and preservation of the sampled finger print image by protecting it from rubbing and staining and the adhering of the finger prints of a third party possible by the handling of the finger print or the like done thereafter. SOLUTION: A medium 1a for sampling finger prints herein used comprises a mount 3 having a color coupler layer 2 on a base material, a transparent protective film 4 connected to the mount 3 foldably thereon and a sheet 8 which is connected to the mount 3 foldable thereon while having a development layer on the rear thereof. After a finger is pressed on the mount 3 to stamp a finger print, the development layer of the sheet is folded on the finger print stamped part to make an image 10a of the finger print form color.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fingerprint of a human finger which can be collected without soiling the finger when the fingerprint is collected, and which can store the captured fingerprint image while protecting it from dirt and rubbing. It concerns the sampling method.

[0002]

2. Description of the Related Art Conventionally, as a means for personal identification, various personal identification systems and the like use a fingerprint image of a human finger as collation data. For example, after collecting the fingerprint of the person, the fingerprint image is stored in advance in the storage means of the computer as collation data, and the same as that stored in the storage means on a medium such as a card owned by the person. By displaying the fingerprint image of the user, when receiving various services, this person presents a medium such as a card and displays the fingerprint image data previously stored in the storage means of the computer and the medium such as the card. There is a security system that performs identity verification by collating with fingerprint image data based on a given fingerprint image.

[0003] In addition, as a door opening and closing system,
The fingerprint of the person's finger is pressed against the fingerprint reading unit of the fingerprint reading device installed near the door to read the fingerprint image data, and the fingerprint image data and the personal information stored in the storage means of the computer in advance are read. There is also known a door opening / closing system and the like that performs security management by collating with fingerprint image data and enabling the door to be opened only when the collation of each fingerprint image data matches.

As described above, the use of the information based on the fingerprint as the collation data of various identity verification systems can be expected to have an effect of further improving the security. However, the accuracy of the identity verification is improved and the identity verification is improved. In order to ensure that the fingerprints can be read, it is important to first improve the reading accuracy of the fingerprints themselves, and it is also important to be able to store the fingerprints after they are collected so that they are not stained or damaged. is necessary. Even if the collation system is sophisticated, it is expected that the reliability of the collation system will be adversely affected if the fingerprint image data, which is collation data, is poorly collected or read with low accuracy.

As a conventional fingerprint collecting method, a method of applying a developing solution to a finger and then pressing the finger on a diazo photosensitive paper to perform printing is performed. However, this fingerprint collection method has a drawback that the finger is stained because the developer is applied to the finger, and the developer attached to the finger has to be washed away thereafter, which is troublesome. Also, in the above method, since there is no means for protecting the fingerprint image collected on the diazo photosensitive paper, a third party touches the fingerprint image collected with great care and attaches another human fingerprint. The fingerprint image may be stained by rolling or rubbing the collected fingerprint image with a finger or the like, and when reading the fingerprint image as fingerprint image data by machine, there is a danger that the reading accuracy may be reduced. Had to pay close attention to it.

[0006]

SUMMARY OF THE INVENTION According to the present invention, when a fingerprint of a human finger is collected, the finger can be reliably collected without soiling the finger, and the collected fingerprint image is rubbed or stained, and subsequent collection is performed. An object of the present invention is to provide a fingerprint collecting method capable of securely protecting a fingerprint image from being attached to a fingerprint of a third person who may be attached due to handling of the fingerprint.

[0007]

In order to achieve the above object, a first aspect of the present invention is a method for collecting fingerprints, comprising: a mounting sheet having a color former layer or a developer layer on a substrate;
Using a transparent protective film that is foldably connected to the mount and a fingerprint collection medium that is formed of a sheet that is foldably connected to the mount and has a developer layer or a color former layer on the back surface. After pressing a finger on the mount to perform fingerprint printing, the sheet is folded on a fingerprint-printed portion of the mount to form a fingerprint image by a contact reaction between a color former and a developer. Is what you do.

According to a second aspect of the present invention, there is provided a method for collecting fingerprints, comprising: a backing sheet having an adhesive layer on a substrate; a transparent protective film foldably connected to the backing sheet; Using a fingerprint collection medium consisting of a sheet which is connected to be foldable on the top and a hydrophobic toner or ink is releasably applied to the back surface, a finger is pressed on the mount to perform fingerprint imprinting, The present invention is characterized in that a hydrophobic toner or ink of a sheet is fixed on a fingerprint imprinted portion.

According to a third aspect of the present invention, there is provided a method for collecting fingerprints, comprising: a backing sheet having a fingerprint-imprinted portion on a surface of a base material; Using a fingerprint-collecting medium consisting of a transparent protective film coated with a reagent that develops a chemical reaction by contact with secretions from the fingerprint portion and develops a color, the finger is pressed against the backing paper, and the fingerprint is imprinted. It is characterized in that a fingerprint image is colored by folding a protective film on a fingerprint imprint portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method of collecting a fingerprint according to the present invention will be described in detail with reference to the drawings. put it here,
FIG. 1 is a perspective view of a fingerprint collecting medium used in the first embodiment of the present invention, FIG. 2 is a cross-sectional view of a fingerprint collecting medium used in the first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention. FIG. 4 is a cross-sectional view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the first embodiment. FIG. 4 is a perspective view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the first embodiment of the present invention.

FIG. 5 is a perspective view of a fingerprint collecting medium used in the second embodiment of the present invention, FIG. 6 is a sectional view of the fingerprint collecting medium used in the second embodiment of the present invention, and FIG. Second
FIG. 8 is a cross-sectional view showing a state in which a fingerprint is attached to the mount of the fingerprint collecting medium used in the second embodiment of the present invention. FIG. 8 shows the fingerprint attached by the secretion of a finger on the mount of the fingerprint collecting medium used in the second embodiment of the present invention. FIG. 9 is a cross-sectional view showing a state in which a hydrophobic ink or a toner is adhered on secretions, FIG. 9 is a cross-sectional view showing a state in which a fingerprint is collected by a fingerprint collecting medium used in the second embodiment of the present invention, and FIG. It is a perspective view showing the state where a fingerprint was sampled with the medium for fingerprint sampling used in the 2nd mode of the present invention.

FIG. 11 is a perspective view of a fingerprint collecting medium used in the third embodiment of the present invention, FIG. 12 is a sectional view of the fingerprint collecting medium used in the third embodiment of the present invention, and FIG. FIG. 14 is a cross-sectional view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the third embodiment of the present invention. FIG. 14 is a perspective view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the third embodiment of the present invention. .

In a first embodiment of the fingerprint collecting method of the present invention, a fingerprint is collected using the fingerprint collecting medium 1a shown in FIG. The fingerprint collecting medium 1a includes a mount 3 having a colorant layer 2 on a base material, and an adhesive 5 on one edge of the mount 3.
A transparent protective film 4 which is adhered and connected to the base material 3 and which is connected to the mount 3 so as to be able to be folded, and a base material which is connected to the other end of the mount 3 by bonding with an adhesive 6 And a sheet 8 having a color developer layer 7 on the back surface. This sheet 8 is also connected to the color forming agent layer 2 of the mount 3 so as to be foldable.

The color developing agent layer 2 provided on the base material of the mount 3 and the color developing agent layer 7 provided on the back surface of the sheet 8 correspond to the relationship between the bottom paper and the top paper used for carbonless color paper. Similarly, the color former layer 2 is encapsulated by microcapsules, and when pressure is applied to the microcapsules, the microcapsules are broken and the encapsulated color former is exposed, and the color former is exposed to the back surface of the sheet 8. When the color developer comes into contact with the developer, the color developer reacts to form a color, and the fingerprint image 10a appears. Therefore, at the stage before use, the color former layer 2 provided on the base material and the color developer layer 7 provided on the back surface of the sheet 8 are polymerized, and pressure is applied to some beat. In order to prevent unnecessary color development, the fingerprint collecting medium 1a is usually stored with the transparent protective film 4 folded and sandwiched between the backing sheet 3 and the sheet 8 as shown in FIGS. . The color former layer 2 provided on the base material of the mount 3 was used as a developer layer, and the sheet 8
By making the color developer layer 7 provided on the back surface of a color development layer, the formation positions of the color development layer and the color developer layer are reversed,
A configuration may be such that a color developer layer is provided on the base material of the mount 3 and a color former layer is provided on the back surface of the sheet 8.

Next, in a second embodiment of the fingerprint collecting method of the present invention, a fingerprint collecting medium 1b shown in FIGS. 5 and 6 is used. This fingerprint collecting medium 1b is provided with an adhesive layer 1 on a substrate.
2, a transparent protective film 14 bonded to one end of the mount 11 with an adhesive 13a and connected thereto, and an adhesive 13b foldable on the mount 11
And a sheet 16 on the back side of which a hydrophobic toner or ink 15 is releasably applied. As the pressure-sensitive adhesive for the pressure-sensitive adhesive layer 12, acrylic, starch-based, PVA-based, or polymer gel-based ones can be used.

Adhesive layer 1 provided on base material of mount 11
Numeral 2 is provided for adhering secretions secreted from the skin of the finger, for example, water, fat, keratin components, proteins, and the like to the adhesive layer 12 when the fingerprint portion of the finger is pressed. is there. Further, since the hydrophobic toner or ink 15 provided on the back surface of the sheet 16 has a property of being incompatible with moisture, the hydrophobic toner or ink 15 is provided on the adhesive layer 12 provided on the base material of the mount 11. Toner or ink 15
When contact is made, only the portion to which secretions secreted from the skin of the finger, for example, water, fat, keratin components, proteins, etc. adhere, do not attract the hydrophobic toner or ink 15, so that it is symmetrical with the surrounding colors. The fingerprint image 10b is displayed, and the fingerprint image can be visually confirmed. Further, in order to make it easier to confirm the fingerprint image 10b, ink, toner, or the like having an affinity for a hydrophobic component such as fat or a keratin component may be fixed to the fingerprint image portion.

Next, a third embodiment of the fingerprint collecting method of the present invention is the fingerprint collecting medium 1c shown in FIGS.
Is used. The fingerprint collecting medium 1c is formed by connecting a backing sheet 18 having a fingerprint imprinted part on the surface of the base material with an adhesive 21 so as to be foldable on the backing sheet 18 and secretes from the fingerprint part on the back side. And a transparent protective film 20 coated with a reagent 19 which develops a color by a chemical reaction upon contact with the transparent protective film 20. As the chemical reaction using the reagent 19, a ninhydrin reaction, a xanthoprotein reaction, and the like used for detecting a protein can be used.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the first embodiment of the fingerprint collecting method of the present invention will be described.
An embodiment will be described below in which the embodiment is specifically performed using the fingerprint collection medium 1a. First, the sheet 8 of the fingerprint collecting medium 1a and the transparent protective film 4 are turned up from above the mount 3, and the fingerprint of the finger to be sampled is strongly pressed against the coloring agent layer 2 provided on the mount 3. As a result, the microcapsules containing the coloring agent of the coloring agent layer 2 are destroyed corresponding to the undulations of the unevenness of the fingerprint of the finger.

Next, in a state where the sheet 8 is superimposed on the backing sheet 3, the sheet 8 is lightly rubbed from above, so that the color developing agent exposed on the backing sheet 3 is provided on the back surface of the sheet 8. The color developer layer 7 comes into contact with the developer, and the contacted portion reacts and develops a color, so that the fingerprint image 10a appears visually. Then, as shown in FIGS.
Is cut off from the sewing machine 9, and the transparent protective film 4 is folded on the mount 3 to protect the fingerprint image 10 a of the mount 3. As a result, the fingerprint image 10a can be collected and visually checked through the transparent protective film 4, and the fingerprint image data of the fingerprint image 10a can be read without staining the fingerprint image 10a. Can also be read.

Next, a specific example of the second embodiment of the fingerprint collecting method of the present invention using the fingerprint collecting medium 1b will be described below. First,
Sheet 16 of transparent medium 1b for fingerprint collection and transparent protective film 1
4 is turned up from the top of the backing 11 and a fingerprint of a finger to be collected is strongly pressed against the adhesive layer 12 provided on the top of the backing 11. Thereby, secretions secreted from the skin of the finger, such as water, fat, keratin components, and proteins, are attached to the adhesive layer 12 so as to correspond to the convex undulations of the fingerprint of the finger. You.

Next, the sheet 16 is overlaid on the pressure-sensitive adhesive layer 12 provided on the base material of the mount 11, and
6, a hydrophobic toner or ink 15 provided on the back surface
Is pressed against the adhesive layer 12. As a result, as shown in FIG. 7, secretions 17 secreted from the skin of the finger, for example, water, fat, keratin components, proteins, etc. adhere to the adhesive layer 12 and are provided on the back surface of the sheet 16 in this state. By pressing the hydrophobic toner or ink 15 against the adhesive layer 12, the hydrophobic toner or ink 15 is applied to a portion other than the portion where the secretion 17 secreted from the finger skin is attached as shown in FIG. By attaching 15, the fingerprint image 10b is displayed symmetrically with respect to the surrounding colors, and can be visually confirmed.

Then, as shown in FIGS. 9 and 10, the sheet 16 is cut off and cut off from the sewing machine 9a.
Of the fingerprint image 10b is protected. This allows
The fingerprint image 10b can be collected and visually checked through the transparent protective film 14, and the fingerprint image data of the fingerprint image 10b can be read by an image reading device or the like without soiling the fingerprint image 10b. Can also be.

Next, a third embodiment of the fingerprint collecting method of the present invention will be described in detail with reference to a specific example in which the fingerprint collecting medium 1c is used. First,
The transparent protective film 20 of the fingerprint collecting medium 1c is
The user flips up from above and strongly presses the fingerprint of the finger to be collected on the mount 18. Then, a reagent 19 applied to the back surface of the transparent protective film 20 is brought into contact with and pressed against the portion on which the fingerprint is stamped by pressing a finger on the backing sheet 18. As a result, the secretion from the fingerprint portion attached to the mount 18 and the reagent 19 chemically react with each other to form a color, and the fingerprint fingerprint image 10c is displayed. Examples of the chemical reaction by the reagent 19 include a ninhydrin reaction and a xanthoprotein reaction used for protein detection.

Then, as shown in FIGS. 13 and 14, the transparent protective film 20 is folded on the backing sheet 18 to protect the fingerprint image 10c on the backing sheet 18. As a result, the fingerprint image 10c can be collected and visually confirmed through the transparent protective film 20, and the fingerprint image data of the fingerprint image 10c can be visually read without soiling the fingerprint image 10c. Can also be read.

In any of the fingerprint collecting media 1a, 1b, and 1c used in the fingerprint collecting method of the present invention, the surface of the backing sheet on which the fingerprint is to be stamped is covered and protected with a transparent protective film. It is possible to protect the collected fingerprint image from rubbing, dirt and the like. Further, in order to collect a more reliable fingerprint image when collecting the same human fingerprint, all or two of the three types of fingerprint collection media 1a, 1b, 1c used in the fingerprint collection method of the present invention. May be used in combination to collect fingerprints. This is because, in collecting these fingerprints, there is a possibility that a slight difference occurs in the fingerprint image even if the fingerprints of the same finger are collected due to the angle of the finger when the finger is pressed against the mount, the displacement of the finger, and the like.

[0026]

As described above, according to the fingerprint collecting method of the present invention, when a fingerprint of a human finger is collected, the fingerprint can be reliably collected without soiling the finger as in the conventional collecting method. In addition, the collected fingerprint image can be securely protected and stored by the transparent protective film from a fingerprint or the like of a third party which may be rubbed, stained, and then adhered by handling the collected fingerprint. .

[0027]

[Brief description of the drawings]

FIG. 1 is a perspective view of a fingerprint collection medium used in a first embodiment of the present invention.

FIG. 2 is a sectional view of a fingerprint collection medium used in the first embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the first embodiment of the present invention.

FIG. 4 is a perspective view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the first embodiment of the present invention.

FIG. 5 is a perspective view of a fingerprint collection medium used in the second embodiment of the present invention.

FIG. 6 is a sectional view of a fingerprint collection medium used in the second embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a state in which a fingerprint is adhered on a mount of a fingerprint collecting medium used in the second embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a state in which a fingerprint is adhered on a mount of a fingerprint collecting medium used in the second embodiment of the present invention with a secretion of a finger, and then a hydrophobic ink or toner is attached on the secretion. .

FIG. 9 is a cross-sectional view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the second embodiment of the present invention.

FIG. 10 is a perspective view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the second embodiment of the present invention.

FIG. 11 is a perspective view of a fingerprint collecting medium used in the third embodiment of the present invention.

FIG. 12 is a sectional view of a fingerprint collecting medium used in the third embodiment of the present invention.

FIG. 13 is a cross-sectional view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the third embodiment of the present invention.

FIG. 14 is a perspective view showing a state where a fingerprint is collected by a fingerprint collecting medium used in the third embodiment of the present invention.

[Explanation of symbols]

1a, 1b, 1c Fingerprint collection medium 2 Color former layer 3, 11, 18 Mount 4, 14 Transparent protective film 5, 6, 13a, 13b, 21 Adhesive 7 Developer layer 8, 16, 20 Sheet 9 Cut-out sewing machine 10a, 10b, 10c Fingerprint image 12 Adhesive layer 15 Hydrophobic toner or ink 17 Secretion secreted from finger skin 19 Reagent that forms color by chemical reaction upon contact with finger secretion

Claims (3)

[Claims] 1. A mount having a color former layer or a color developer layer on a base material, a transparent protective film connected to the mount so as to be foldable, and a back surface connected to the mount so as to be foldable on the mount. Using a fingerprint collection medium consisting of a sheet having a color developer layer or a color former layer, a finger is pressed on the backing sheet to perform fingerprint printing, and then the sheet is folded over a fingerprint printing section of the backing sheet. A fingerprint image formed by a contact reaction between a color former and a developer. 2. A backing sheet having an adhesive layer on a substrate, a transparent protective film connected to the backing sheet in a foldable manner, and a hydrophobic toner connected to the backing sheet in a foldable manner and having a back surface. Alternatively, using a fingerprint collection medium consisting of a sheet on which ink is releasably applied, a finger is pressed on the backing paper to perform fingerprint imprinting, and the hydrophobic toner or ink of the sheet is fixed on the fingerprint imprinting portion. A method for collecting fingerprints, comprising: 3. A base material having a fingerprint imprinted part on the surface of a base material and a foldable connection formed on the base material, and a color is formed by a chemical reaction upon contact with secretions from the fingerprint part on the back side. Using a fingerprint-collecting medium consisting of a transparent protective film coated with a reagent to be applied, a finger is pressed against the backing sheet to perform fingerprint imprinting, and then the transparent protective film is folded over a fingerprint-imprinted portion to obtain a fingerprint image. A method for collecting fingerprints, which comprises coloring.