JPS6131513B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of printing and writing information, has excellent stain resistance, and can be used for a long time with a low degree of staining even when reading by a reading device such as an automatic ticket gate is repeated many times. The present invention relates to an information record body in which printed and written portions are retained in a readable manner over a period of time.

When issuing a large number of identification cards, in order to efficiently record the information specific to the certificate holder on each certificate recording medium without error, the certificate holder can be Extracting unique information and manually recording it on the certificate recorder cannot achieve the purpose, so a printing machine connected to a storage means that stores the necessary information automatically prints the certificate. In many cases, it is required to issue a large number of identification cards by printing information unique to the certificate holder on the identification card. Furthermore, due to the necessity of confirming the correctness of the correspondence between the identification card and the person carrying it, the certificate holder may be required to have his or her handwritten signature on the certificate recording body.

In order to satisfy these conditions, a certificate recording body needs to have both the suitability for recording visible information by mechanical printing means and the suitability for recording visible information by handwriting.

Certification records used for such purposes are
In the past, many were made of ordinary paper. This is because many ordinary papers are generally suitable for both machine printing and handwriting.

However, ID cards made of paper certificate recording bodies have poor moisture resistance, weak strength, and poor stain resistance, so the original form may be damaged, torn, or soiled. However, it has the disadvantage that it may be difficult to read the recorded contents of the identification card.

In order to eliminate such defects, the necessary visible information is printed or handwritten on the certificate recorder, and then the front, back, and surrounding areas are covered with plastic film to provide physical strength and prevent staining. Attempts have been made and put into practice.

However, with this method, an identification card cannot be issued without going through two steps: recording visible information and protecting it with plastic film, making the issuance process complicated and relatively expensive. There is a drawback.

If a less favorable condition is to require the person to sign the certificate in his or her own hand, the certificate is issued to the person, the signed document is collected again, and it is protected with plastic film.
After that, it will be necessary to reissue it.

In addition, since the above process is necessary before the certificate is handed over to the person in question, the reasons for issuing the certificate are examined for an unspecified number of people, and the necessary information is given to those who satisfy certain predetermined conditions. It is difficult to apply a recording medium for certificates that is protected by, for example, plastic film, such as distributing certificates recording proof facts by mail or the like.

Under these circumstances, there is a demand for the development of a recording medium for certificates that is made of plastic film with excellent moisture resistance and mechanical strength, and that can also record visible information by hand or mechanical means. Non-woven fabrics with a porous surface and plastic films with porous surfaces have been developed.

However, these developed materials are often inferior in terms of heat resistance, rigidity, etc.
It is not satisfactory as a recording medium for certificates.

From this point of view, we selected a plastic film with favorable properties depending on the application, and in order to make it suitable for printing, we laminated the previously mentioned nonwoven sheet or a plastic film with a porous surface to create a composite material. An attempt was made to develop a material with such properties.

In addition to attempts to obtain materials with desirable properties by laminating two types of films or sheets, attempts have also been made to apply materials with good ink adsorption properties, such as pigments, to the surface of films with desirable properties by means such as coating. I came.

However, in both the certificate recording body made by pasting together the above two types of films or sheets, or the certificate recording body in which a coating layer of a material with good ink adsorption property is provided on the surface of the base film, the recording surface is bare. Since it is used in an exposed state, there is a problem in terms of stain resistance.

This is because the suitability for printing and writing on the surface of a certificate recording medium and its stain resistance are contradictory, and generally speaking, increasing the ink adsorption ability of the surface of a certificate recording medium improves its ability to absorb oil, fat, dirt, etc. This is because it results in an increase in the amount of water at the same time.

Therefore, many of the certificate recording bodies that are excellent in printing and writing suitability have clear information recording surfaces in the initial stage immediately after they are issued, but as they are carried and used on a daily basis, fingerprint,
The entire body becomes dirty due to hand marks or foreign matter, and eventually the required visible information recorded on the certificate recorder becomes extremely difficult to decipher, and the certificate function is lost.

The present inventor has discovered that an information recording medium that has a plastic film as a base, has a coating layer made of a material suitable for printing and writing on one side, and has a magnetic layer on the other side has the problem of stain resistance. As a result of research on the solved information recording medium, a material layer suitable for printing and writing is provided on the base film, and a stain-resistant material layer with a thickness of at least 3 μm is provided on the material layer suitable for printing and writing. Printing and writing aptitude and stain resistance can be improved by distributing the material uniformly so as to partially cover the material layer that is suitable for printing and writing to the extent that it does not impede the visibility of the recorded characters. We have discovered that it is possible to form an information recording medium that satisfies both of these requirements, and have completed the present invention based on this knowledge.

That is, the gist of the present invention is that a material layer suitable for printing and writing is provided on one side of a base film,
A contamination-resistant material layer having a thickness of at least 3 μm on the material layer having suitability for printing and writing partially covers the material layer having suitability for printing and writing to such an extent that it does not impede visibility of recorded characters. The information recording body is characterized in that a magnetic layer is provided uniformly distributed on the base film, and a magnetic layer is provided on the other surface of the base film.

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

1 to 3 show the information recording medium of the present invention, FIG. 1 is a front view, FIG. 2 is a partially enlarged front view of the area surrounded by circle B shown in FIG. 1, and FIG. It is a sectional view taken along the line A-A shown in the figure.

The information recording body 5 of the present invention is provided with a material layer 2 suitable for printing and writing on one side of a base film 1, and a stain-resistant layer 2 having a thickness of at least 3 μm on the material layer 2 suitable for printing and writing. The material layer 3 is uniformly distributed so as to partially cover the material layer 2 that is suitable for printing and writing to the extent that it does not impede the visual recognition of recorded characters recorded by printing or writing, A magnetic layer 4 is provided on the other surface of the base film 1, and in the embodiments shown in FIGS. 1 to 3, the stain-resistant material layer 3 is formed in a plain net pattern.

FIG. 4 shows the state of printing on the information recording medium of the present invention, in which ink 6 is partially attached to the material layer 2 suitable for printing and writing, which is not covered with the stain-resistant material layer 3. ing. However, since the stain-resistant material layer 3 is formed into a pattern of fine dots that does not interfere with the visual recognition of the recorded characters, the recorded characters can be seen with a uniform density by human visual inspection. It is recognized as a picture.

In the information recording medium of the present invention, polyvinyl chloride, acrylic resin, polyester, etc. can be used as the base film 1.

Next, the material layer having printing and writing properties is formed by applying a coating composition in which silicon dioxide pigment is dispersed in a vehicle consisting of an acrylic resin binder and a solvent by a method such as a knife coating method or a roll coating method. Apply a printed layer formed by solid printing by gravure printing method or offset printing method using gravure ink or offset ink in which silicon dioxide pigment is dispersed in a vehicle consisting of an acrylic resin binder and a solvent. can do. In addition, printing,
The material layer having writing properties may be provided directly on the base film, or may be provided via a primer layer.

Next, the stain-resistant material layer 3 is uniformly dispersed over the entire surface of the material layer suitable for printing and writing, and protrudes by at least 3μ or more from the material layer suitable for printing and writing, and is suitable for printing and writing. Or it acts to prevent direct contact or friction with the ink coated surface on which writing is done, and the stain-resistant material layer 3 is made of silk screen using acrylic resin-based silk screen ink, gravure ink, etc. A printed layer such as a plain mesh pattern with a thickness of 3μ or more or a parallel line pattern formed by a printing method, a gravure printing method, etc. can be applied,
In particular, the number of screen lines ranges from 50 lines/1 inch to 80 lines/1 inch.
Using a silk screen printing plate made using a mesh screen in the inch range, and silk screen printing using an acrylic resin silk screen ink, the dot area ratio of 3 μm or more is 10
A plain mesh printing layer of 30% to 30% is suitable.

In the information recording medium of the present invention, required printing of entry fields, characters, designs, etc. is performed on the material layer 2 that is suitable for printing and writing, and then the stain-resistant material layer 3 is printed to perform the required printing. An information recording body can be formed.

Since the information recording medium of the present invention is formed as described above, it is conveyed by a mechanical device as shown in Figure 5, and even if it is rubbed by the guide roller 7, the printed or writing surface is not contacted, so that stains occur. The degree to which this happens is extremely small.

When a magnetic information recording format is employed, a magnetic head is typically pressed against and slid against the magnetic recording layer in order to read the information recorded on the magnetic recording layer.

In addition, when inserting an identification card into a machine, the magnetic heads are often placed facing each other so that it can still be read even if the front side is inserted incorrectly. The visible information recording surface of the magnetic head is always rubbed by one of the magnetic heads, which is the most severe condition from the standpoint of generating dirt from rubbing.

Even under such harsh usage conditions, the occurrence of stains on the information recording medium of the present invention is extremely low.

Furthermore, the information recording medium of the present invention also has the effect of preventing tampering.

That is, even if the eraser is rubbed on the recording surface in an attempt to erase the information recording area, the eraser is blocked by the stain-resistant material layer and does not reach the ink-attached area of the material layer 2, which is suitable for printing and writing. Therefore, even if a person who attempts to tamper with the information records erases the characters printed or written on the information recording medium, the purpose cannot be achieved.

The information recording body of the present invention requires both information that can be read by a machine, such as an identification card, a commuter pass for automatic ticket gates, an information management card, a process control card, etc., and information that can be visually read by humans. It can be used extremely effectively as an information recording body of a recording medium.

As detailed above, the information recording medium of the present invention has excellent stain resistance, the printed or written recording area is less likely to be soiled by friction, and the recorded area of visible information is clearly readable over a long period of time. It has the advantage of being able to be maintained at any time.

The information recording medium of the present invention also has the advantage of being difficult to tamper with.

EXAMPLE A primer having the composition shown below was applied to one side of a base film made of polyester having a thickness of 188 μm by a roll coating method, and then a material layer-forming paint having printing and writing suitability having the following composition was applied by a roll coating method.

Next, a plain screen with a dot area ratio of 30% is made by using a silk screen ink for forming a stain-resistant material layer with the following composition on top of it, and a mesh screen with a screen line count of 50 lines/1 inch. An information recording medium of the present invention was obtained by performing silk screen printing using a silk screen printing plate and providing a magnetic layer on the other side of the base film.

Primer acrylic resin 48% by weight MEK 48% by weight Curing agent 2% by weight Paint for forming a material layer suitable for printing and writing Acrylic resin 52.1% by weight Silicon pigment 9.4% by weight MIBK 17.5% by weight MEK 5.3% by weight Curing agent 15.7% by weight Resistance Ink for forming a contaminating material layer Acrylic resin 48% by weight MEK 48% by weight Hardening agent 2% by weight After printing on the above information recording medium, it is passed through an automatic ticket gate, and the printed recording surface of the information recording medium is transferred using a feed roller. Despite repeated attempts at rubbing, there was very little staining and the printed area remained clear.

[Brief explanation of the drawing]

1 to 3 show the information recording medium of the present invention, FIG. 1 is a front view, FIG. 2 is a partially enlarged front view of the area surrounded by circle B shown in FIG. 1, and FIG. 4 is a partially enlarged front view of the information recording medium in a state where the information is printed, and FIG. 5 is a sectional view of the information recording medium in the process of being conveyed by a feeding roller. be. 1... Base film, 2... Material layer having printing and writing suitability, 3... Stain-resistant material layer, 4...
magnetic layer.

Claims (1)

[Scope of Claims] 1. A layer of material suitable for printing and writing is provided on one side of the base film, and a layer of stain-resistant material having a thickness of at least 3 μm is provided on the layer of material suitable for printing and writing. The magnetic layer is uniformly distributed so as to partially cover the material layer suitable for printing and writing to an extent that does not impede the visual recognition of recorded characters, and a magnetic layer is provided on the other surface of the base film. An information recording body characterized by being provided with: 2 Screening the stain-resistant material layer with a number of lines of 50/1
The invention is characterized in that it is formed into a plain mesh pattern by plate-making and printing using a mesh screen with a mesh size ranging from 1 inch to 80 lines/1 inch so that the dot area ratio is 10 to 30%. The information recording medium according to item 1. 3. Claims 1 or 2 when the stain-resistant material layer is made of acrylic resin.
Information record as described in section.