JPS6018945Y2 - copy slip set - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a copy slip set, and more particularly to a copy slip set that prevents confidential leakage of information such as characters, symbols, figures, etc. copied onto the slip.

Traditionally, information such as characters and symbols copied onto a slip was copied onto the slip using a method of ablation or using special chemicals as a method of maintaining confidentiality during the process of transmission from the issuer of the slip to the legitimate right holder. The information recording section is made invisible, and when the slip is delivered to the legitimate right holder, the legitimate right holder performs some kind of processing (heating or other processing) on the slip to remove the information recording section. There are known ways to make it visible.

However, in these methods, once the information recording section is revealed, it can be read by anyone, so there is a risk that the information will be leaked to a third party other than the legitimate rights holder when storing it.

In addition, since it is not possible to hide the information recording section again after it has been revealed, the same slip must be used when transmitting information from one legitimate right holder to another legitimate right holder. The disadvantage is that the information recording section cannot be used and a slip with the information recording section hidden must be created again.

As a result of research to eliminate the above drawbacks, the present inventor provided a layer of pressure-sensitive copying ink containing a fluorescent substance on the back side of the first slip, and placed a second slip under the first slip. The necessary information is obtained by using a set of slips stacked one on top of the other and provided with a concealing printing layer consisting of a solid or tint pattern of the same color as the pressure-sensitive copying ink layer on the surface of a second slip facing the pressure-sensitive copying ink layer. is written on the first slip and copied on the second slip, and the slip with this information copied is sent from the slip issuer to the legitimate right holder, who then irradiates the slip with ultraviolet light. discovered that the leakage of information could be completely prevented by reading information recorded on slips using ink containing a fluorescent substance, and based on this knowledge, the present invention was completed.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an example of a set of copy slips according to the present invention.

It consists of a slip 1 and a slip 2 overlapping the slip 1, and a pressure-sensitive copying ink layer 3 containing a fluorescent substance that emits ultraviolet light with a wavelength of 200 nm to 300 nm is provided on the back side of the slip 1. On the surface of the slip 2 facing the pressure-sensitive copying ink layer 3, a concealing printing layer 4 made of a solid or background pattern of the same color as the pressure-sensitive copying ink layer is provided.

The copy slip set of the present invention includes at least one slip set 5 consisting of the above-mentioned slips 1 and 2.

In addition, in the photocopy slip set of the present invention, in order to hide only the PIN number and make the information such as name and address readable, it is necessary to locally cover only the area corresponding to the PIN entry field. Needless to say, it is sufficient to provide a concealing printed layer.

When necessary information that must be transmitted confidentially is recorded on slip 1 of the copy slip set of the present invention, fluorescent light of the same color as that of the concealing printing layer also appears on the concealing printing layer of slip 2. Information is copied using ink containing a substance.

Figure 2 shows a slip 2 on which information has been copied, and when viewed simply with the naked eye, the color of the letters recording information 6 is the same as the color of the concealing printing layer, so it is camouflaged by the concealing printing layer. information 6 cannot be read.

However, by irradiating the slip with ultraviolet light having a wavelength of 200 nm to 300 nm, the fluorescent substance emits light and the information 6 can be read as shown in FIG.

In addition, the reason why the wavelength of the ultraviolet light is set to 200 nm to 300 nm is that ultraviolet light of this wavelength can only be obtained by using a special filter for cutting the visible light part in the germicidal lamp, and the special filter is not generally available. This is because the type of fluorescent material used in the slip is not known because it is difficult to do so, and this is effective in preventing counterfeiting of slips.

As detailed above, according to the copy slip set of the present invention, the information copied on the copy slip can be transmitted from the slip issuer to the legitimate rightful holder in a state of confidentiality. It can be effectively used for transmitting information that should not be known to others, such as a password code.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one example of the copy slip set of the present invention;
The figure is a plan view of a slip on which information has been copied, and FIG. 3 is a plan view showing the state in which the copied slip is irradiated with ultraviolet light to cause the fluorescent substance to emit light. 1.2...Slip, 3...Pressure sensitive copying ink layer, 4...Concealing printing layer, 5...Slip set.

Claims (1)

[Scope of utility model registration request] A first slip and a second slip overlapped below the first slip, and a pressure-sensitive copying ink containing a fluorescent substance that emits light with ultraviolet light with a wavelength of 200 nm to 300 nm is applied to the back side of the first slip. a cover layer, and a concealing printing layer consisting of a solid or background pattern of the same color as the pressure-sensitive copying ink layer is provided on the surface area of the second slip facing the pressure-sensitive copying ink layer. A copy document set containing at least one set.