JPS6237748Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to copying slips, in which the copy information formed on the part to be copied can be recognized only when a specific light is irradiated, and furthermore, the copy information cannot be read. The key point is to ensure that this is possible.

(Prior art and its problems) Pressure-sensitive recording media, in which a carbon copying layer is formed on a part of carbon paper or a slip, allow recorded information to be easily copied, so various formats have been developed. It is used in various fields. However, these carbon papers and pressure-sensitive recording materials have the disadvantage that the copied information copied onto the copying paper is easily tampered with, and various counterfeiting and tampering prevention measures are being considered. Under these circumstances, in order to make the copied information visible only when exposed to ultraviolet light, a layer of pressure-sensitive copying ink containing a fluorescent material is provided on the bottom surface of the top sheet of the slip, and a layer of pressure-sensitive copying ink containing fluorescent material is applied to the top surface of the bottom sheet. There is a type of copying slip with an invisible password, which has a copying area that appears to be approximately the same color as the pressure-sensitive copying ink layer, but appears to have a different hue when exposed to ultraviolet light. However, with such a copy slip, if the transfer of pressure-sensitive copy ink is insufficient, or if the copy information is scratched off or hidden due to friction, chemicals, dirt, etc., sufficient fluorescent material cannot be secured, and the copy Information is often difficult to read.

(Means for Solving the Problems) The present invention was developed in view of the above-mentioned circumstances. Copied information can be recognized only when irradiated with a specific light, and the transfer of pressure-sensitive copying ink is This ensures that the copied information will not become difficult to read even if the information is insufficient, or even if there is friction, dirt, etc.

FIG. 1 is an explanatory diagram showing an example of a copy slip of the present invention, where 1 is an upper sheet and 2 is a lower sheet. Further, 3 is a pressure-sensitive copying ink layer provided on the lower surface of the upper sheet 1, and 4 is a copying layer provided opposite to the pressure-sensitive copying ink layer 3. 5 is a textured part;
This is provided to make it difficult to decipher handwriting caused by pen pressure. The copy slip of the present invention is provided with at least one set of the upper sheet 1 and the lower sheet 2 having the above configuration, but each sheet must also satisfy the following conditions. That is, the copying layer 4 contains a fluorescent substance, and the hue, brightness, and saturation are made to be the same so that the difference between the pressure-sensitive copying ink layer 3 and the copying layer 4 is indiscernible when the fluorescent substance is not emitted. It is necessary to set it.

With such a configuration, the copy information 7 formed on the copy layer 4 can be visualized only when irradiated with radiation such as ultraviolet rays, infrared rays, and As shown in the figure,
Even if the transfer of the pressure-sensitive copying ink is insufficient or a part of the copied information 7 is scraped off by friction or chemicals, the fluorescence involved in identifying the copied layer 4 and the copied information 7 transferred thereon. The substance is already secured in the copying layer 4 and the copying information 7 is fully legible.

Further, the pressure-sensitive copying ink layer 3, which constitutes a part of the copying slip of the present invention, is formed by kneading an appropriately selected light absorbing agent such as an ultraviolet absorbing substance or an infrared absorbing substance into a normal pressure-sensitive copying ink. do.

In this way, even if the transfer of the pressure-sensitive copying ink layer is insufficient, even if there are scratches, stains, etc., the copy information 7 can be clearly read.

(Effects of the invention) Since the invention has the above-described configuration, the copied information can be recognized only when irradiated with a specific radiation, and even if the transfer of pressure-sensitive copying ink is insufficient, there will be no scratching. Even if there is dirt or dirt, the copied information can be clearly read.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of a copy slip of the present invention, and FIG. 2 is an explanatory diagram of a copying state of copy information. 1... Upper sheet, 2... Lower sheet, 3...
Pressure-sensitive copy ink layer, 4... Copied area, 7... Copy information.

Claims (1)

[Scope of utility model registration request] At least one set of an upper sheet having a pressure-sensitive copying ink layer provided on a part of its lower surface and a lower sheet having a copying layer opposite to the pressure-sensitive copying ink layer provided on a part of its upper surface. The layer to be copied contains a fluorescent material, and the hue, brightness, and brightness of each layer are adjusted so that the difference between the layer to be copied and the copied information transferred thereon cannot be discerned when the fluorescent material is not emitted. 1. A copying slip, characterized in that the saturation is set to be the same, and the pressure-sensitive copying ink layer further includes a light absorbing agent that absorbs radiation that can cause the fluorescent substance to emit light.