JPH0620624Y2 - Tamper-proof double-sided colored copy form - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) In the present invention, one or more middle paper sheets 2 are superposed between an upper paper sheet 1 and a lower paper sheet 3 and at least one side is glued. In a copy form that is fixed by a method such as attaching, and has a copying function by a carbonless copying (pressure-sensitive copying) method, the writing pressure from the surface of the upper leaf paper 1 causes the surface pressure of the middle leaf paper 2 and the lower leaf paper 3 Is transmitted to both sides of the upper sheet 1 and the middle sheet 2, and the coloring means on both sides of the middle sheet 2 and the lower sheet 3 simultaneously develops color on both sides. The present invention relates to a tamper-proof double-sided coloring type copy form.

(Prior Art) Currently, a copy form is used as shown in FIG.
A set of multiple forms are fixed on one side 4,
It is a form that is cut off from the perforations 16 one by one, or a continuous form with perforations 16 for the purpose of continuous writing as shown in FIG.

(Problems to be solved by the invention) Generally, these forms have a function that an article entered from the upper leaf paper 1 is transmitted to the surface of the middle leaf paper 2 and the lower leaf paper 3, and this copy form is used. Each piece of the upper sheet 1, the middle sheet 2, and the lower sheet 3 that composes is followed by a process in which after the necessary items are entered, the pieces are separated and sent to the required department.

Originally, it is decided by the publisher of the copy form that the middle sheet 2 and the lower sheet 3 should be filled in by copying, and that the falsification of the entry items of the form once separated is invalid. However, in the conventional copy form, it is possible to tamper easily if the writer is aware of the fraud and deliberately enters it for the purpose of tampering, and the illegitimate person's fraud can be immediately confirmed from the form collected by the issuer. I cannot sense it.

Further, a pressure-sensitive copying paper which is useful for preventing forgery and is composed of an upper paper having a layer of a color developer and a colored pigment and a lower paper having a layer of a pressure-sensitive dye is known from Japanese Patent Publication No. 61-1317.

The above is effective in preventing forgery because the colored letters and images are stable under normal storage conditions and the letters and images remain even if they are treated with an ink eraser and do not fade even if they fade. However, it is impossible to immediately detect the illegitimateness of the writer because only one side of the contacting surface is colored.

Therefore, an object of the present invention is to improve the above-mentioned conventional drawbacks and to obtain a tamper-proof double-sided coloring type copy form which can immediately detect the tampering of the writer.

(Means for Solving the Problems) The present proposal provides the following copy forms in order to achieve the above objectives.

That is, one or more sheets of middle-leaf paper 2 are superposed between the upper leaf paper 1 and the lower leaf paper 3 and at least one side thereof is fixed by a method such as gluing, and carbon-free copying (pressure-sensitive) is performed. In a copy form having a copying function by the (copying) method, the upper leaf paper 1 and the middle leaf paper 2 and the middle leaf paper 2 and the lower leaf paper 3 are combined by writing pressure from the surface of the upper leaf paper 1 or by mechanical printing. It is a tamper-proof double-sided color-developing copy form which is provided with color-developing means for simultaneously developing colors on both sides in contact with each other.

Then, the top sheet 1 of the copy form is used as the OCR sheet 12,
Further, the middle paper 2 is used as the receipt paper 13. Further, the carbon-free (pressure-sensitive copying) color development of each of the middle paper 2 and the lower paper 3 is made different.

(Embodiment) As shown in FIG. 3, a form according to the present invention has one or more middle sheets 2 between an upper sheet 1 and a lower sheet 3, and a carbon-free sheet between each sheet. A copying (pressure-sensitive copying) process is performed so that a coloring effect is also produced on the upper sheet in contact with the front surface of the middle leaf paper 2 and the lower leaf paper 3, that is, the back surface of the upper leaf paper 1 and the back surface of the middle leaf paper 2. It is a copy form which has a color forming means and has a double-sided color forming function.

More specifically, the color development on the back surface of the upper leaf paper 1 and the color development on the back surface of the middle leaf paper 2 are performed by the color development processing applied to the front surface of the middle leaf paper 2 and the front surface of the lower leaf paper 3, which come into contact with the back paper leaf. The effect of color development on the back side is that the predetermined color effect is obtained on the predetermined contact surface, and if the contact relationship is other than the predetermined value, the color does not develop or does not become the predetermined color even if the color develops. It is a copy form composed of a combination of a sheet 1, a middle sheet 2, and a lower sheet 3.

As the most suitable technical means for developing the color on the back side, as shown in FIG. 4, two sets of carbon-free processing agents consisting of a color developing agent A5 and a color developing agent A6 and a color developing agent B7 and a color developing agent B8 are prepared. There is a method in which a different color developer A5 and a different color developer B8, and a different color developer B7 and a different color developer A6 are combined and applied to adjacent sheets.

The applied layers are separate sets of agents and do not develop independently as do self-coloring carbonless copy papers.

Coloring agents A5 and developer B8, coloring agents B7 and developer A6 are stacked on top of each other, and a writing pressure or the like is applied from the upper portion to form the coloring agent A5 in the upper and lower layers.
The capsule in the coloring agent B7 is destroyed, and the dye inside is adsorbed by the developing agent B8 and the developing agent A6 on the opposite paper, and both sides develop color at the same time.

In this case, it is also possible to change the colors of articles formed on the respective sheets by changing the hues of the dyes encapsulated in the color former A5 and the color former B7.

Further, as another method for obtaining the two-sided color development, as shown in FIG. 5, another color development is performed on the surface of the middle paper 2 and the lower paper 3 of the carbonless copy paper by means of printing or the like. A layer 11 is provided, and a part of the color developing agent that has been colored by writing pressure is used as the top paper 1.
This is a method of developing color by the set-off effect of transferring to the back side of the sheet and the back side of the intermediate paper 2. In the figure, 9 is a color former for carbonless copying paper, and 10 is a developer.

In this case, as the developer 11 provided on the surfaces of the middle paper 2 and the lower paper 3, a developer having a property of high transferability is selected.

Several methods can be considered as falsification means for the upper leaf paper 1, the middle leaf paper 2, and the lower leaf paper 3. Next, an example in which the present invention is extremely effective against illegal falsification will be given.

As an example, for the purpose of illegal entry on the surface of the middle paper 2,
If a blank sheet or the like is inserted between the upper sheet 1 and the middle sheet 2 to cut off the copy relationship between them, and if different items are entered,
The coloring effect is not recognized on the back surface of the upper leaf paper 1, the recipient of the upper leaf paper 1 can immediately detect the irregularity on the front surface of the middle leaf paper 2, and
Since the back surface of the middle leaf paper 2 is colored, even if the front surface of the middle leaf paper 2 is fraudulently entered, the entry items on the front and back sides are different, and from this point, fraud is also detected.

As another example of falsification, for the same illegal purpose as above, if the colors of the coloring materials of the upper leaf paper 1 and the middle leaf paper 2 are made different, the middle leaf paper 2 is replaced with the upper leaf paper 1 and the lower leaf paper before the copy entry. When separated from the paper 3, the back surface of the upper leaf paper 1 and the front surface of the lower leaf paper 3 are matched with each other, and the back surface of the upper leaf paper 1 and the surface of the lower leaf paper 3 are not colored, or the color is formed as predetermined. Injustice is discovered due to matters that do not apply.

As another example of falsification, after writing on the middle leaf paper 2 and the lower leaf paper 3 from the surface of the upper leaf paper 1 by a means such as an iron brush that does not leave articles on the surface of the upper leaf paper 1, Middle paper 2,
If you make an incorrect entry on the top sheet 1 after separating it from the bottom sheet 3, the colored article on the back of the top sheet 1 and the entry on the top sheet 1 are different, and the recipient of this form immediately I can detect.

The tamper-proof double-sided coloring type copy form of the present invention contributes to tampering prevention of the copy form by holding the copy relationship on the back side of the upper sheet 1 and the middle sheet 2 of the copy form in this way. For example, in contrast to the tampering prevention form of the conventional product in which the self-coloring type paper is used for the upper leaf paper 1 and the middle leaf paper 2 which are similar in terms of color development on both sides, the method of the present invention uses the upper leaf paper 1
By the correlation of the contact surface between the middle leaf paper 2 and the middle leaf paper 2 and the lower leaf paper 3, both-sided color development is obtained, thereby preventing the falsification of the form, which is a completely new method for preventing falsification of the form which is not available in the conventional products. is there.

An embodiment based on the present invention will be described below.

FIG. 6 is an example shown in claim 2 in which the OCR paper 12 is used as a top sheet.

FIG. 7 is an example of claim 3 and is an example in which the middle sheet is the receipt sheet 13.

FIG. 8 is an example of claim 4 in which the color development of each sheet is changed. In this case, if the middle sheet 2 is excluded and data is written from the surface of the upper sheet 1, the lower sheet 3 does not develop a predetermined color, and falsification of the form can be easily detected. In the figure, 10 is a color developing agent, 14 is a black carbonless (pressure sensitive copying) color developing agent, and 15 is a blue carbonless (pressure sensitive copying) color developing agent.

(Effect of the Invention) According to the present invention, copying can be performed on the back side of the upper leaf paper 1 and the middle leaf paper 2, and between the upper leaf paper 1 and the middle leaf paper 2, and between the middle leaf paper 2 and the lower leaf paper 3. The color development on both sides can be obtained by the correlation of the contact surfaces in, and the tampering can be detected extremely effectively by the color development effect on the back surface of the upper sheet 1 and the middle sheet 2.

Therefore, there is a feature that it is possible to immediately detect the fraud of the writer.

In the copy form of the present invention, the upper leaf paper 1 can be used as the OCR paper and the middle leaf paper 2 can be used as the receipt paper, and the carbonless copying colors of the middle leaf paper 2 and the lower leaf paper 3 are different from each other. You can do this by
If the middle sheet 2 is excluded and data is written from the surface of the upper sheet 1, the lower sheet 3 does not develop a predetermined color, and falsification of the form can be easily detected.

[Brief description of drawings]

1 and 2 are perspective views showing an example of a conventional form.
FIG. 3 is a perspective view showing the form configuration of the present invention. Figure 4 shows
FIG. 3 is a principle diagram showing a double-sided color development function by a combination of two sets of color developer A5 and developer A6 and color developer B7 and developer B8 (correlation in the arrow direction). FIG. 5 is a principle diagram showing a state in which a part of the color-developing layer 11 formed by printing or the like is transferred to the upper portion (in the direction of the arrow) during color development. FIG. 6 is a perspective view showing an embodiment of claim 2. FIG. 7 shows claim 3
FIG. FIG. 8 is a principle diagram showing an embodiment of claim 4. DESCRIPTION OF SYMBOLS 1 ... Upper leaf paper, 2 ... Middle leaf paper, 3 ... Lower leaf paper, 4 ... Adhesive part, 5 ... Color-forming agent A, 6 ... Color-developing agent A, 7 ... Color-developing agent B, 8 ... Color-developing agent B, 9 ... Color developing agent, 10 ... Developing agent, 11 ... Developing layer formed by means such as printing, 12 ... OCR paper, 13 ... Receiving paper, 14 ... Black carbonless (pressure sensitive copying) coloring agent, 15 ... Blue no Carbon (pressure-sensitive copying) coloring agent, 16 ... Perforation

Claims (4)

[Scope of utility model registration request] 1. A carbonless copy in which one or more middle paper sheets 2 are superposed between an upper paper sheet 1 and a lower paper sheet 3 and at least one side thereof is fixed by a method such as gluing. In a copy form having a copying function by the (pressure-sensitive copying) method, the upper leaf paper 1 and the middle leaf paper 2 and the middle leaf paper 2 and the lower leaf paper are subjected to writing pressure or mechanical printing by writing from the surface of the upper leaf paper 1. A tamper-proof double-sided color-developing copy form that is provided with color-developing means that simultaneously develops colors on both adjacent surfaces. 2. The tamper-proof double-sided coloring type copying form according to claim 1, wherein the upper sheet 1 is an OCR sheet 12. 3. The receipt sheet 13 using the middle paper 2 as claimed in claim 1.
A tamper-proof double-sided color-developing copy form described in the section. 4. The carbon-free copying (pressure-sensitive copying) coloring of each of the middle paper 2 and the lower paper 3 is different from each other.
A tamper-proof double-sided color-developing copy form described in the section.