JPH1086319A - Method and apparatus for wiping off ink of intaglio - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wipe off ink from an outer surface of an intaglio and to effectively collect the wiped ink, and to reuse the wiped ink. SOLUTION: The method for wiping off ink of an intaglio comprises the steps of wiping off ink 3A adhered to an outer surface 5 of the intaglio 1 by a first ink adhering member 6 made on its surface of a rubber or plastic, then moving ink 3B adhered to the surface of the member 6 to a surface of a second ink adhering member 10 having much wear resistance on a surface and high hardness and higher ink adhering force than that of the surface of a cleaning roll 6 and collecting ink 3C adhered to the surface of the member 10 by a collecting means 11 for reuse.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intaglio ink wiping method and apparatus for removing ink adhering to an outer surface of a printing press other than a groove for receiving intaglio ink, and more particularly to an ink wiping method. The collection and reuse of wiped ink.

[0002]

2. Description of the Related Art Intaglio printing is often used in the production of banknotes that require precise printed image lines, electronic parts and mechanical parts having a fine structure manufactured using printing techniques, and the like. In this intaglio printing, when ink is supplied into the grooves of the intaglio, if ink is attached to the outer surface other than the grooves of the intaglio, unnecessary dots and lines are printed on the printing material. It is necessary to wipe off ink (dirt) adhered to the outer surface.

Conventionally, an intaglio cleaner of a type in which a cloth belt, a rubber belt or the like is brought into contact with the outer surface of the intaglio to wipe off the dirt is used. In the intaglio cleaner, the ink adsorbed on the surface of the belt or the like is washed away with a solvent, and the ink is repeatedly used.

[0004]

The intaglio cleaner as described above requires the solvent adsorbed on the belt or the like to be washed away with the solvent, which is troublesome. When the ink is used repeatedly, the solvent permeated the belt or the like. However, there is a problem that the ink leaks out and dissolves in the ink in the groove to change the quality of the ink, thereby changing the shape of the image to be printed on the plane and the shape of the swelling, thereby hindering accurate printing. Also,
The ink that has been washed away with the solvent cannot be recovered,
There was also a problem that expensive ink could not be used effectively.

SUMMARY OF THE INVENTION The present invention provides a method and apparatus for wiping an intaglio intaglio that enables accurate wiping of the ink from the outer surface of the intaglio and collection of the wiped ink, and enables reuse of the wiped ink. The purpose is to provide.

[0006]

According to the present invention, there is provided a method for wiping ink adhered to an outer surface other than a groove of an intaglio, the method comprising: The surface is wiped off with a cylindrical or belt-shaped first ink-adhering member made of rubber or plastics, and then the ink adhering to the surface of the first ink-adhering member is cleaned with at least abrasion resistance and hardness of the surface. The roller is moved to the surface of a roller-shaped second ink-adhering member having a higher ink adhering force than the surface of the first ink-adhering member, and the ink adhering to the surface of the second ink-adhering member is collected. Collected by means.

Further, the present invention for achieving the above object provides a device for wiping ink adhered to an outer surface other than a groove of an intaglio, wherein the surface is made of rubber or plastics, and the surface is formed on the outer surface of the intaglio. A cylindrical or belt-shaped first ink-adhering member which is provided so as to be relatively movable in contact with itself and which rotates or travels, and is rotatably provided in contact with the surface of the first ink-adhering member; A roller-shaped second ink adhering member having at least a surface having high abrasion resistance and hardness and having a higher ink adhering force than the surface of the first ink adhering member; Means for collecting ink adhering to the surface.

According to the present invention, the first ink applying member is
Wipe off the ink adhering to the outer surface of the intaglio
The ink applying member moves to the surface of the first ink applying member to strip off the adhering ink, and enables accurate collection by the collecting means. As a result, wiping of the ink adhering to the outer surface of the intaglio and collection of the wiped ink are performed accurately and effectively, and the ink can be reused without deteriorating the quality of the ink.

The outer surface is formed of any one of a fluororesin, a fluorine-containing silicon resin and fluorocarbon, and the surface of the first ink adhering member is formed of silicon rubber, urethane rubber, polyethylene or the like. And the surface of the second ink adhering member is desirably formed of one of a hard metal and a hard ceramic.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. Reference numeral 1 denotes an intaglio, which is set on a table 2. On the surface of the intaglio 1, a groove 4 having a depth of about 10 μm for receiving the ink 3 is formed corresponding to an image to be printed. The outer surface 5 of the intaglio 1 other than the grooves 4 is formed on a non-adhesive surface by coating with a fluororesin, a fluorine-containing silicon resin or the like, or by plating with fluorocarbon so as to reduce the adhesion of the ink 3. ing.

A cleaning roll 6 as a first ink adhering member is arranged so as to be able to contact and separate from the outer surface 5 of the intaglio 1. Roll body 7 of this cleaning roll 6
The outer surface 5 made non-adhesive as described above is
An ink adhering layer 8 having a larger ink adhering force, that is, a rubber layer of silicon rubber or urethane rubber having adhesiveness and elasticity, or a plastics layer of polyethylene, polyester, or the like is provided. The cleaning roll 6 is pressed against the outer surface 5 of the intaglio 1 with a relatively small force, is rotated about a shaft 9 as shown by an arrow A by a rotation and movement mechanism (not shown), and The intaglio 1 is relatively moved in contact with the outer surface 5 thereof.

The rotational speed and the moving speed of the cleaning roll 6 indicated by arrows A and B are such that the relative speed difference between the surface of the cleaning roll 6 and the outer surface 5 of the intaglio 1 is zero, that is, the cleaning roll 6 It is desirable that the rolling be performed without slipping on the outer surface 5, or that the rolling be performed at a speed higher than the rolling speed.

[0013] A collect roll 10 as a second ink adhering member disposed in parallel with the surface of the cleaning roll 6 is pressed into contact therewith. The collect roll 10 has at least a surface portion formed of a member having high hardness such as a metal or ceramics, and has a hard metal film such as hard nickel plating or hard chrome plating on the surface,
A hard ceramic film formed by vapor deposition of titanium nitride or the like is provided so that the surface has abrasion resistance and high hardness, and has higher ink adhesion, that is, adhesiveness, than the surface of the cleaning roll 6. The collect roll 10 rolls with the rotation of the cleaning roll 6 or rotates in a direction indicated by an arrow C at a speed higher than the rolling speed.

A doctor blade 11 as a means for collecting the ink 3C adhered to the surface of the collect roll 10 is pressed against and brought into contact with the surface of the collect roll 10. Below the doctor blade 11, a tank 12 for storing the collected ink 3C is arranged. The tank 12 is provided with a screw 13 for guiding the stored ink to a tank (not shown) for reusing the ink.

Next, the operation of the present apparatus will be described. When the ink 3 is supplied to the groove 4 of the intaglio 1 and the outer surface 5 other than the groove 4 has a flaw or the like, the ink adheres to the outer surface 5 as indicated by reference numeral 3A. Therefore, after supplying the ink, FIG.
As shown in the figure, the cleaning roll 6 is pressed against the outer surface 5 of the intaglio 1 and rotated and moved as shown by arrows A and B, so that the ink 3A on the outer surface 5 is transferred to the ink adhering layer 8.
As shown by reference numeral 3B.

At this time, the outer surface 5 of the intaglio 1 is made non-adhesive as described above, and the ink adhering layer 8 of the cleaning roll 6 is formed.
Is formed of a member having elasticity and tackiness, such as rubber or plastics, so that the attached ink 3A on the outer surface 5 can be more completely moved to the ink attached layer 8 side. At this time, the viscosity of the ink 3A is high,
When the breaking strength of the ink 3A itself is larger than the adhesive strength of the ink 3A to the outer surface 5, the applied ink 3A easily moves from the outer surface 5 to the ink applied layer 8.

However, when the viscosity of the ink 3A is low and the breaking strength of the ink 3A itself is smaller than the adhesive strength of the ink 3A to the outer surface 5, the ink adhered to the outer surface 5 by one wiping by the cleaning roll 6 is used. Since 3A remains, it is necessary to move the cleaning roll 6 several times. Note that even in such a case, the cleaning roll 6
Is positively rotated in the direction of arrow A at a speed higher than the rolling speed, so that the attached ink 3A can be almost completely moved to the cleaning roll 6 side even by one wiping operation.

The adhesion ink 3B that has moved to the ink adhesion layer 8 of the cleaning roll 6 is carried to the contact portion with the collect roll 10 by the rotation of the cleaning roll 6. Since the ink adhering force on the surface of the collect roll 10 is configured to be larger than the ink adhering force on the surface of the ink adhering layer 8, the adhering ink 3B passing between the two rolls 6, 10 is removed from the cleaning roll 6. Collect roll 1
It is moved to the 0 side as shown by reference numeral 3C.

The attached ink 3C transferred to the collect roll 10 is conveyed to the contact portion of the doctor blade 11, which is a collecting means, by the rotation of the collect roll 10, and is scraped from the surface of the collect roll 10 by the doctor blade 11, so that an arrow is drawn. As shown in 3D, it is stored in the tank 12. At this time, unlike the cleaning roll 6, the surface of the collect roll 10 is formed of a material having high wear resistance and high hardness, such as metal and ceramics. The contamination and the contamination of the collected ink 3D with impurities are small.

Adhesive ink 3D contained in tank 12
Is guided by a screw 13 to a tank for reuse (not shown), is given a predetermined process, and is reused.

In the above-described embodiment, an example in which the cylindrical cleaning roll 6 is used as the first ink adhering member has been described. However, the present invention is not limited to this, and a belt-shaped cleaning roller wound around two rollers is used. Also, in the above-described embodiment, an example is shown in which the doctor blade 11 widely used in the field of printing technology is used as the collecting means of the adhered ink 3C of the collect roll 10, but is not limited thereto. It goes without saying that various collecting means such as other scraping type or suction type can be applied.

[0022]

As described above, according to the present invention, wiping of ink from the outer surface of the intaglio plate and collection of the wiped ink can be performed accurately and effectively.
The effect that the ink can be reused without deteriorating the collected ink is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 intaglio 2 units 3 ink 3A, 3B, 3C, 3D adhesion ink 4 groove 5 outer surface 6 first ink adhesion member (cleaning roll) 8 ink adhesion layer 10 second ink adhesion member (collect roll) 11 collection means (doctor blade) ) 12 tank 13 screw

Claims (8)

[Claims] 1. A method for wiping ink adhering to an outer surface other than a groove of an intaglio plate, wherein the ink adhering to the outer surface is first removed from a cylindrical or belt-shaped surface made of rubber or plastics. (1) wiping with an ink-adhering member; and removing the ink adhering to the surface of the first ink-adhering member with an ink having at least a high abrasion resistance and hardness and a surface higher than the surface of the first ink-adhering member. A method for wiping an intaglio ink, comprising: moving the ink to the surface of a roller-shaped second ink applying member having an adhesive force; and collecting the ink adhering to the surface of the second ink applying member by a collecting means. . 2. The method according to claim 1, wherein the outer surface is formed of any one of a fluororesin, a fluorine-containing silicon resin, and a fluorocarbon. 3. The ink wiping of an intaglio according to claim 1, wherein the surface of the first ink adhering member is formed of one of silicon rubber, urethane rubber, polyethylene and polyester. Method. 4. The method according to claim 1, wherein the surface of the second ink adhering member is formed of one of a hard metal and a hard ceramic. 5. An apparatus for wiping ink adhering to an outer surface other than a groove of an intaglio, wherein the surface is made of rubber or plastics, and the surface is provided so as to be relatively movable in contact with the outer surface of the intaglio. ,
And a cylindrical or belt-shaped first ink applying member which rotates or runs on itself, and is provided rotatably in contact with the surface of the first ink applying member, and at least the surface has high wear resistance and hardness and A roller-shaped second ink adhering member having a surface having a higher ink adhering force than the surface of the first ink adhering member; and an ink provided opposite to the surface of the second ink adhering member, the ink adhering to the surface being provided. An intaglio ink wiping device comprising: a collecting means; 6. The apparatus according to claim 5, wherein the outer surface is formed of any one of a fluorine resin, a fluorine-containing silicon resin, and a fluorocarbon. 7. The ink wiping of an intaglio plate according to claim 5, wherein the surface of the first ink adhering member is formed of any one of silicon rubber, urethane rubber, polyethylene and polyester. apparatus. 8. The apparatus according to claim 5, wherein the surface of the second ink adhering member is formed of one of a hard metal and a hard ceramic.