JPH07213971A - Apparatus for forming surface protection layer of card - Google Patents

Abstract

PURPOSE:To provide an apparatus for forming a surface protection layer of a small-sized card which enables uniform and flat application without spreading of an application liquid over the surface of the card in an applicator for forming a hard coat as a surface protective layer of the card as a material to be coated by adopting dry offset printing as an application means. CONSTITUTION:In this applicator for forming a hard coat as a surface protective layer of a small-sized card as a material to be coated, dry offset printing is adopted as an application means. For example, an inking roll 203, a part of which is immersed in an ultraviolet-setting resin liquid in a liquid receiver 201, is installed, and a roll 205 like a plate cylinder is installed next to the roll 203. Moreover, next to the roll 205, a roll 210 of a blanket cylinder is installed to contact a roll 220 of an impression cylinder through the card 11. As a result, a uniform, flat surface protection membrane can be formed of the card 11 while preventing the application liquid from back-running and staining the inside of the apparatus such as a card transfer passage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for forming a surface protective layer on a small card such as a license or ID card.

[0002]

2. Description of the Related Art As a technique for forming a card surface protective layer,
Conventionally, the roll coating method according to Japanese Utility Model Laid-Open No. 61-48419 and JP-A-2-268859 is used.

A protective layer is formed on the entire surface of the card.

[0004]

However, when a surface protective layer is formed on the entire surface of a sheet such as a card, the coating solution may wrap around the edge of the card and, in some cases, the back surface. In many cases, not only the wraparound and the card conveying path in the coating device are soiled, but also the back surface of the card, which is a product, is soiled.

According to the present invention, when a surface protection layer is formed on a small card such as a license or ID card by applying a coating liquid of an ultraviolet curable resin, the contamination of the card or the device due to the wraparound on the back surface is eliminated as described above. It is an object of the present invention to provide a coating device for a card surface protective layer which is compact and has good operability.

[0006]

An object of the present invention is to provide a coating apparatus for forming a hard coat as a surface protective layer on a small card as an object to be coated, characterized in that the coating means is dry offset printing. This is achieved by a device for forming a card surface protective layer.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention and its operation will be described with reference to FIG.

FIG. 1 shows a liquid receiver 20 containing an ultraviolet curable resin liquid.
An inking roll 203 partially immersed in 1 is provided, a roll 205 for the plate cylinder is disposed in contact with the roll 203, and a roll 2 of the blanket cylinder in contact with the roll 205 is further provided.
10 is provided so as to be in contact with the roll 220 of the impression cylinder via the card 11.

As the printing plate, a waterless planographic printing plate, a gravure printing plate, a flexographic printing plate, a relief printing plate and the like can be applied.

According to the present invention, a plate having an image portion slightly smaller than the size and shape of the surface of the card is used as a plate cylinder roll 20.
5, the coating liquid of the ultraviolet curable resin received on the plate cylinder from the inking roll 203 is offset to the blanket roll 210, and the offset print image is printed on the impression cylinder roll 22.
It is transferred to the surface of the card conveyed between 0 and the blanket roll 210, and the application of the surface protective layer is achieved by the printing means. However, in the case of gravure printing, the gravure roll becomes the plate cylinder roll itself.

As the offset printing plate as the printing means, a method of using a PS plate is mainly used, and it is used for various printing. However, the PS plate uses squeezing water for parts other than the image part so that the ink adheres only to the image part. The adjustment of this squeezing water is very troublesome and requires skill, and as a device. It requires a delicate water replenishing device and adjusting device, which is complicated and large. Therefore, it can be said that such a lithographic offset device using a PS plate is not suitable for general office work.

Therefore, in the present invention, such a printing method using a PS plate using squeezing water is avoided, and a method using a waterless lithographic plate, a gravure printing, a flexographic printing plate, a relief printing plate which does not use squeezing water as described above is used. did. This is called a dry offset printing method.

It is mechanically easy to eliminate the deviations of the inking roll 203, the plate cylinder roll 205, the blanket roll 210, and the impression cylinder roll 220 in the rotational direction and the thrust direction from each other to the extent that they are practically acceptable. Cards that can be used and are transported between the impression cylinder roll 220 and the blanket roll 210
If there is no slip in 11, it means that there is no misalignment of printing, so that the coating liquid as printing ink does not squeeze out on the edge of the card and back around.

In fact, in the application of this printing method, there is no slip of the card and printing deviation, that is, application deviation does not occur at all, so that the inside of the device such as wrapping around the back of the card and the card conveying path may be soiled with the application liquid. It was confirmed that there was no. Further, the adjustment work is almost the same, and the device for forming the card surface protective layer can be made small and compact, simple and easy to operate and inexpensive.

The ultraviolet curable resin liquid applied to the surface of the card is cured by being irradiated with ultraviolet rays in a processing section provided separately from the coating apparatus of the present invention, and a card surface protective layer is formed.

As a practical example of coating, a resin relief plate is attached to the plate cylinder 205 on the card surface on which information is recorded by using the apparatus shown in FIG. 1, and an ultraviolet curing resin liquid (UV varnish) is printed to print the card surface. Application was performed. As a result, it was possible to obtain a uniform hard coat layer with no printing deviation and no wraparound to the edge of the card 11.

[0017]

The card surface protective layer is applied by printing means by dry offset printing in which a printing plate that does not use squeezing water is attached to the plate cylinder, and the backside of the coating liquid is not applied to the inside of the device such as the card transport path. Without getting dirty with the coating liquid,
An apparatus capable of surely forming a uniform and flat surface protective film on a card can be provided in a compact and compact size and suitable for office work.

[Brief description of drawings]

FIG. 1 is a schematic view of an apparatus for forming a card surface protective layer of the present invention.

[Explanation of symbols]

 11 card 201 liquid receiver 203 inking roll 205 plate cylinder roll 210 blanket roll 220 impression cylinder roll

Claims (1)

[Claims] 1. A coating device for forming a hard coat as a surface protective layer on a small card as an object to be coated, wherein the coating means is dry offset printing.