JPH0373345A - Printing ink feeder - Google Patents

Abstract

PURPOSE:To supply only the surface of a printing original plate efficiently with a small quantity of printing ink, and to facilitate cleaning and exchanging after printing by impregnating a printing-ink supply member with printing ink and pressure-welding the printing-ink supply member to the printing original plate or impregnating printing ink from the base end side of the printing-ink supply member and applying ink to the printing original plate through a sliding and contacting section on the nose side. CONSTITUTION:A printing-ink supply member 5 is composed of a water-absorbing material, and pressure-welded and supported to a printing original plate 2. When a plate cylinder body 1b is turned, printing ink 7 impregnated to the printing-ink supply member 5 is applied. In another example, a printing ink container 10 is formed in a box body shape, the top face side of which is opened, and printing ink 11 is stored. The base end side 9b is dipped into printing ink 11 and a printing original-plate sliding and contacting section 9a on the nose side is pressure-welded to the printing original plate 2 in a water-absorbing printing original-plate sliding and contacting section 9a. Printing ink 7, 11 is applied only onto the surface of the printing original plate 2, and is not applied to both end surface sections of the plate cylinder body 1b. Printing ink 11 on the protruding sections of the printing original plate 2 is scraped off by doctor blades 8, 12, and reused efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a printing ink supply device used in a printing device that performs printing by attaching a printing original plate to the outer peripheral surface of a plate cylinder body.

B3 Summary of the Invention The first invention is a printing ink supply device used in a printing device that prints by attaching a printing original plate to the outer peripheral surface of a plate cylinder main body, in which a water-absorbing printing ink supply member is impregnated with printing ink. This printing ink supply member is brought into pressure contact with the surface of the printing original plate to supply printing ink to the printing original plate, so that printing ink can be supplied by using a small amount of printing ink, and in particular, it is possible to supply printing ink by using a small amount of printing ink. This makes it easier to print and also makes it easier to clean the printing device after printing. The second invention is a printing ink supply device that stores printing ink, holds the base end side of the printing ink supply member, and is provided with a printing ink storage container to which a doctor blade is attached, so that printing ink can be replaced. Also, the doctor blade can be easily replaced and cleaned.

C0 Conventional Technology Conventionally, a printing device has been proposed in which a printing plate on which images and characters are engraved is attached to the outer circumferential surface of a substantially cylindrical plate cylinder body, and printing is performed by pressing a material to be printed, such as a seal, onto this printing plate. has been done.

A printing ink supply device for use in such a printing device has been proposed.

As shown in FIG. 5, such a printing apparatus includes a plate cylinder main body 101 formed in a substantially cylindrical shape and rotatably supported by a support shaft 101a about an axis. The plate cylinder main body 101 is supported so that its rotation axis is substantially horizontal.

The printing original plate 1 is provided on the outer peripheral surface of the plate cylinder body 101.
02 is attached so that it is wound.

This printing original plate 102 is a so-called intaglio plate, and is made of a metal plate, a synthetic resin sheet, or the like, and is formed so that the portions corresponding to images and characters are recessed portions.

An impression cylinder 103 formed in a cylindrical shape and having approximately the same length as the plate cylinder main body 101 is pressed against the printing original plate 102 .

The impression cylinder 103 is arranged so that its axis is parallel to the rotation axis of the plate cylinder body 101 and its outer peripheral surface is in pressure contact with the printing original plate 102 attached to the outer peripheral surface of the plate cylinder body 101. .

The impression cylinder 103 is rotatably supported by a support shaft 103a around its axis.

A printing material 104 made of paper, a synthetic resin sheet, etc. is inserted between the printing original plate 102 attached to the outer peripheral surface of the printing cylinder body 101 and the impression cylinder 103, and the printing material 104 is inserted between the printing original plate 102 and the impression cylinder 103, which are attached to the outer peripheral surface of the printing cylinder main body 101. It is attached so that it is sandwiched between the two. Then, this printing material 104 is transferred to the printing plate main body 10.
1 is rotated as shown by arrow r1 in FIG. 5, and as the printing cylinder main body 101 rotates, the impression cylinder lO3 rotates in the opposite direction of the printing cylinder main body 101 as shown by arrow r□ in FIG. When it is rotated, the feed operation is performed as shown by the arrow p in FIG. While being fed in this manner, the printing material 104 is pressed against the printing original plate 102 at a portion between the plate cylinder main body 101 and the impression cylinder 103.

A printing ink supply device used in the above-described printing apparatus is disposed below the plate cylinder main body 101,
It has a printing ink tank 105 storing printing ink 106. The lower side of the plate cylinder main body 101 is immersed in the printing ink 106 stored in the printing ink tank 105 . That is, this printing ink supply device supplies the original printing plate 10 by rotating the plate cylinder main body 101.
The printing ink 106 is sequentially applied to the printing ink 2.

In addition, in a printing apparatus using such a printing ink supply device, a doctor blade 107 is disposed so as to come into sliding contact with the printing original plate 102. This doctor blade 107 is formed into a flat plate shape with a length approximately equal to the length of the plate cylinder main body 101. This doctor blade 107 is provided at a portion between the portion of the printing original plate 102 immersed in the printing ink 106 and the portion thereof reaching the position where the plate cylinder main body 101 comes into contact with the printing substrate 104 due to rotation of the plate cylinder main body 101. There is.

That is, this doctor blade 107 is immersed in the printing ink 106 of the printing original plate 102, and the portion to which this printing ink 106 is applied is attached to the printing material 104.
The printer is configured to scrape off the printing ink 106 in this portion in the longitudinal direction of the plate cylinder main body 101 before contacting the printing ink 106 . In this way, the doctor blade 1
The printing original plate 102 from which the printing ink 106 has been scraped off by 07 has the printing ink 106 left only in the concave portions corresponding to images and characters, and the printing ink 106 adhering to the convex portions not corresponding to images and characters. is removed. Then, when the original printing plate 102 with the printing ink 106 adhered only to the concave portions corresponding to images and characters is pressed against the printing material 104 at a position between the plate cylinder main body 101 and the impression cylinder 103. , the printing ink 1.06 adhering to the recessed portion is transferred to the printing material 104, and printing is performed.

D6 invention tries to solve the problem! By the way, in the printing ink supply device as described above, the plate cylinder main body 101 of the printing device is connected to the printing ink tank 105.
The printing ink 106 is applied to the printing original plate 102 by immersing it in the printing ink 106 stored in the original plate 102 .

Therefore, a predetermined amount of printing ink 1 is applied to the printing original plate 102.
06, the printing ink tank 10
5, it is necessary to store a large amount of printing ink 106 to the extent that the plate cylinder body 101 is sufficiently immersed therein. That is,
For example, even when printing a small number of sheets for the purpose of testing the color tone of printing ink, it is not possible to reduce the amount of printing ink used.

Therefore, in such a printing ink supply device, if there is only a small amount of printing ink, the printing ink cannot be properly supplied and printing cannot be performed. Since a large amount of the printing ink 106 is used, cleaning of the printing ink tank 105 after printing becomes complicated.

Further, in this printing ink supply device, the plate cylinder main body 101 is immersed in the printing ink 106 to coat a large amount of printing ink on the plate cylinder main body 10I and the doctor blade 107. The printing ink 106 is applied to the end surface of the main body 101, and the printing ink 106 is applied to the end surface of the main body 101, and the printing ink 106 is applied to the end surface of the main body 101.
Cleaning and replacement after printing of No. 7 is complicated.

SUMMARY OF THE INVENTION The present invention is proposed in view of the above-mentioned circumstances, and is capable of supplying printing ink satisfactorily using a small amount of printing ink. It is an object of the present invention to provide a printing ink supply device that facilitates cleaning and replacement of a doctor blade and the like after printing.

Means for Solving the Problems 2 In order to solve the above-mentioned problems and achieve the above objects, a printing ink supply device according to the first invention includes a printing ink supply member having water absorption properties and impregnated with printing ink. The printing ink supply member is disposed in sliding contact with the surface of a printing original plate attached to the outer peripheral surface of a rotationally operated plate cylinder body.

The printing ink supply device according to the second invention includes a printing ink storage container in which printing ink is stored, a printing ink storage container that has water absorption properties, a proximal end thereof is immersed in the printing ink in the printing ink storage container, and a distal end thereof is immersed in the printing ink in the printing ink storage container. A printing original plate sliding contact is attached to the outer peripheral surface of a printing cylinder main body which is attached to the printing ink storage container so as to face the outside of the printing ink storage container and whose tip end side is rotated. The apparatus includes a printing ink supply member formed as a part, and a doctor blade attached to the printing ink storage container.

11. In the printing ink supply device according to the first aspect of the invention, the printing ink impregnated in the water-absorbing printing ink supply member is applied to the printing original plate on which the printing ink supply member is attached to the outer peripheral surface of the plate cylinder body. By being pressed, it is adhered to the surface of the printing original plate.

In the printing ink supply device according to the second invention, the printing ink supply member impregnates the printing ink stored in the l'1 printing ink storage container from the proximal end side, and transfers this printing ink to the printing ink on the distal end side. It is applied to the surface of the printing original plate via the original plate sliding contact part. Further, by removing the printing ink storage container, the doctor blade attached to the printing ink storage container is removed at the same time.

G. Examples Specific examples of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the printing ink supply device according to the first invention includes a printing ink supply member 5 having water absorption properties and impregnated with printing ink. 5 is disposed so as to face the plate cylinder body 1b constituting the printing device.

As shown in FIGS. 1 and 2, a printing device in which this printing ink supply device is used is formed into a substantially cylindrical shape, and is supported by a support shaft 1a so as to be rotatable about its axis. It has a plate cylinder 1 including a main body 1b. The plate cylinder main body 1b is supported so that its rotation axis is substantially horizontal, and is rotated by a predetermined rotation drive mechanism (not shown). This plate cylinder main body 1b is attached so that the printing original plate 2 is wound around the outer peripheral surface thereof, thereby forming the plate cylinder 1. The printing original plate 2 is a so-called intaglio plate, and is made of a metal plate or a sheet of synthetic resin such as polyethylene, and is formed so that portions corresponding to images and characters are recessed portions.

The printing original plate 2 may be subjected to chemical corrosion treatment such as so-called etching, mechanical engraving treatment using a chisel, or engraving treatment using a laser beam using a so-called laser printing original plate machine. It is formed by

An impression cylinder 3 formed in a cylindrical shape and having approximately the same length as the plate cylinder body 1b is pressed against the printing original plate 2 attached to the plate cylinder body 1b. This impression cylinder 3 is rotatably supported around its axis by a support shaft 3a. The impression cylinder 3 is arranged such that its axis is parallel to the axis of the plate cylinder main body 1b, and its outer circumferential surface is in pressure contact with the printing original plate 2 attached to the outer circumferential surface of the plate cylinder main body 1b. ing.

Then, a printing material 4 made of paper, a synthetic resin sheet, etc. is inserted between the printing original plate 2 and the impression cylinder 3 attached to the outer peripheral surface of the printing cylinder main body 1b, and these printing original plates 2
and the impression cylinder 3. This printing material 4 has the above-mentioned plate cylinder main body 1b indicated by the arrow A in FIGS. 1 and 2.
When the impression cylinder 3 is rotated in the direction opposite to that of the plate cylinder body 1b as shown by the arrow B in FIGS. , the feeding operation is performed as shown by arrow C in FIGS. 1 and 2. While being fed in this manner, the printing material 4 is pressed against the printing original plate 2 at a portion between the plate cylinder main body 1b and the impression cylinder 3.

The printing ink supply device according to the present invention includes the printing ink supply member 5 disposed below the plate cylinder main body 1b. This printing ink supply member 5 is made of a water-absorbing material such as a non-woven fabric such as so-called felt, a porous material such as a so-called sponge or urethane foam, etc.
The length is approximately equal to the length of the plate cylinder main body lb. The printing ink supply member 5 is attached to supply member supports Fi and 6 and supported so as to be pressed against the printing original plate 2. That is, the plate cylinder main body 1b
When the printing original plate 2 is rotated, a second layer is formed on the surface of the printing original plate 2.
As shown in the figure, the printing ink 7 impregnated into the printing ink supply member 5 is applied. At this time, the printing ink 7 is applied only to the surface of the printing original plate 2, and is not applied to both end surfaces of the plate cylinder main body 1b. Therefore, in this printing ink supply device, the printing ink supply It is sufficient that the member 5 is impregnated with printing ink in an amount necessary to apply it to the surface of the printing original plate 2.

By the way, this printing apparatus is equipped with a doctor blade 8 arranged so as to be in sliding contact with the printing original plate 2. This doctor blade 8 is made of a material such as metal such as stainless steel or so-called hard plastic.
It is formed into a flat plate with a length approximately equal to the length of. This doctor blade 8 is attached to the tip side of a doctor blade support plate 6a that extends integrally with the supply member support 4ff16, and the portion of the printing original plate 2 to which the printing ink supply member 5 is pressed is The plate cylinder body 1b is supported by a portion thereof up to a position where it comes into contact with the printing medium 4 as the plate cylinder body 1b rotates. That is, before the part of the original printing plate 2 to which the printing ink 7 is applied comes into contact with the printing material 4, the doctor blade 8 touches the side edge of this part in the longitudinal direction of the copper plate main body 1b. The printing ink 7 is brought into sliding contact and the printing ink 7 is scraped off.

In this way, on the printing original plate 2 from which the printing ink 7 has been scraped off by the doctor blade 8, the printing ink 7 remains only on four parts corresponding to images and characters, and on the convex parts that do not correspond to images and characters. The applied printing ink 7 is now removed. Then, the original printing plate 2, on which the L printing ink 7 is applied only to the concave portions corresponding to images and characters, is pressed against the printing material 4 at a position between the L distribution cylinder body 1b and the impression cylinder 3. Then, the printing ink adhering to the four parts is transferred to the printing material 4, and printing is performed.

In addition, the printing ink 7 scraped off from the printing original plate 2
is guided by the doctor blade 8, the doctor blade support plate 6a, and the supply member support plate 6, and returns to the printing ink supply member 5, as shown by the arrow in FIG. That is, in this printing ink supply device, the printing ink 7 applied to the convex portions of the printing original plate 2 is again impregnated into the printing ink supply member 5, so that a small amount of printing ink can be used efficiently. .

Further, in the above-described printing apparatus, the doctor blade 8 is installed in order to prevent damage to the doctor blade 8 and the printing original plate 2 due to dust entering between the doctor blade 8 and the printing original plate 2. The above plate cylinder body 1
When performing so-called lateral swinging in which the supply member support plate 6 is reciprocated in the direction of the axis 1a of the blade, the doctor blade 8 is moved between the doctor blade support plate 6a and the supply member support plate by reciprocating the supply member support plate 6. 6 and the printing ink supply member 5 described above.

Next, the printing ink supply device according to the second invention is used in a printing device configured similarly to the printing device in which the printing ink supply device according to the first invention described above is used. That is, a printing apparatus in which this printing ink supply device is used, as shown in FIG. 3, has a plate cylinder 1 comprising a plate cylinder main body 1b and a printing original plate 2, and an impression cylinder 3, Further, a printing material 4 is mounted between the plate cylinder 1 and the impression cylinder 3.

This printing ink supply bag contains the plate cylinder body ib.
It has a printing ink storage container IO disposed on the lower side of the printer. This printing ink storage container 10 includes the above-mentioned plate cylinder main body 1.
It is formed into a substantially rectangular casing having a length substantially equal to the length b, and the upper surface side facing the printing original plate 2 is open. Printing ink 11 is stored in this printing ink storage container 10.

The printing ink supplying member 9 is attached to the printing ink storage container No. 10-. This printing ink supply member 9 is formed in the same manner as the printing ink supply member 5 of the printing ink supply device according to the first invention, and the base end 9b is inserted and held in the printing ink storage container IO. The tip side, which is immersed in the printing ink 11 and forms the printing original plate sliding contact portion 9a, faces the outside of the printing ink storage container 10. And, this printing original plate sliding contact part 9a is "-
4. When the printing ink storage container IO is disposed at a predetermined position, it is pressed against the printing original plate 2 attached to the plate cylinder main body 1b.

In this printing ink supply device, the plate cylinder main body 1b
When the printing ink supply member 9 is impregnated with the printing ink 11, the printing ink 11 is applied to the surface of the printing original plate 2 via the printing original plate sliding contact portion 9a. At this time,
The printing ink 11 is applied only to the surface of the printing original plate 2, and is not applied to both end surfaces of the plate cylinder main body 1b.

A doctor blade 12 is attached to a doctor blade support portion 10a provided so as to extend to one side of the printing ink storage container IO. This doctor blade 12 is a doctor blade 8 of a printing device in which the printing ink supply device according to the first invention is used.
It is formed in the same way. This doctor blade 12 is inserted into the printing original plate 2 until the part of the printing original plate 2 to which the printing original plate sliding contact portion 9a is pressed comes into contact with the printing material 4 due to the rotation of the plate cylinder main body 1b. It is supported so as to be in sliding contact with the That is, before the portion of the printing original plate 2 coated with the printing ink 11 comes into contact with the printing material 4, the doctor blade 12 applies the printing over the longitudinal direction of the plate cylinder main body lb at this portion. The printing ink 11 applied to the convex portions of the original plate 2 is scraped off. The printing ink 11 scraped off from the printing original plate 2 by this doctor blade 12 is
It is guided by this doctor blade 12 and returns to the printing ink storage container IO. That is, in this printing ink supply device, the printing ink 11 applied to the convex portions of the printing original plate 2 is again impregnated into the printing ink supply member 9 via the base end side 9b. can be used efficiently.

In this printing device, the printing original plate 2 on which the printing ink is applied only on four parts corresponding to images and characters is applied to the printing material 4 at a position between the plate cylinder main body 1b and the pressure Iq3. When pressed, the printing ink adhering to the recesses is transferred to the printing material 4, and printing is performed.

In this printing ink supply device, when printing is finished, or the printing ink 11 stored in the printing ink storage container 10 is used up, or printing ink of a different color is used, the printing When the ink storage container 10 is removed from the predetermined position or replaced,
At the same time, the doctor blade 12 is also removed from the position where it slides into contact with the original printing plate 2, or replaced. Therefore, at this time, there is no need to clean the doctor blade 12.

Further, when the printing ink storage container 10 is not in use, the open top side is closed by a lid member 13, and the printing original plate sliding contact portion 9 is closed, as shown in FIG.
If a is covered, the printing ink 11 can be stored in good condition and can be easily transported.

In addition, in a printing apparatus in which this printing ink supply device is used, when so-called horizontal swinging is performed, by reciprocating the printing ink storage container 10, the doctor blade 12 is moved between the printing ink storage container IO and the It can be moved together with the printing ink supply member 9.

H1 Effects of the Invention As described above, in the printing ink supply device according to the first invention, the printing ink impregnated in the printing ink supply member having liquid absorption properties is applied to the outer periphery of the plate cylinder main body. It is adhered to the printing original plate by being pressed against the printing original plate attached to the surface.

Therefore, this printing ink supply device can efficiently apply printing ink only to the printing original plate using a small amount of printing ink, and can apply printing ink to the end face of the plate cylinder main body. Also, there is no need to deposit a large amount of printing ink on the doctor blade or the like.

In the printing ink supply device according to the second aspect of the invention, the printing ink supply member impregnates the printing ink stored in the printing ink storage container from the base end side, and brings this printing ink into contact with the printing original plate sliding contact on the front end side. It is applied to the surface of the original printing plate through the part.

Therefore, in this printing ink supply device, printing ink is efficiently applied only to the surface of the printing original plate,
A large amount of printing ink is not deposited on the doctor blade.

Furthermore, since the doctor blade is attached to the printing ink storage container, the doctor blade can be removed at the same time by removing the printing ink storage container. Therefore, there is no need to clean the doctor blade when replacing the printing ink storage container.

That is, the present invention can provide a good supply of printing ink using a small amount of printing ink, and also makes it easy to clean and replace the plate cylinder body, doctor blade, etc. that make up the bottom of the printing device after printing. It is possible to provide a printing ink supply device that does the following.

[Brief explanation of drawings]

FIG. 1 is a perspective view schematically showing the configuration of a printing ink supply device according to the first invention and a printing device in which this printing ink supply device is used, and FIG. 2 is a perspective view of the printing ink supply device and printing device according to the first invention. FIG. 3 is a side view schematically showing a state during printing. FIG. 3 is a perspective view schematically showing the configuration of a printing ink supply device according to the second invention and a printing device in which this printing ink supply device is used, and FIG. FIG. FIG. 5 is a partially cutaway side view schematically showing the configuration of a conventional printing ink supply device and printing device. 9...Printing ink supply member 9a...
・Printing original plate sliding contact portion 9b... Base end side 10... Printing ink storage container 11...
・・・Printing ink

Claims (2)

[Claims] (1) A printing ink supply member having water absorption properties and impregnated with printing ink is provided, and the printing ink supply member is slidable on the surface of a printing original plate attached to the outer peripheral surface of a rotationally operated plate cylinder body. A printing ink supply device in a printing device that is arranged in contact with each other. (2) a printing ink storage container in which printing ink is stored;
It has water absorption properties and is attached to the printing ink storage container with the base end immersed in the printing ink in the printing ink storage container and the distal end facing outside of the printing ink storage container,
a printing ink supply member whose tip end side serves as a printing original plate sliding contact portion that is in sliding contact with the surface of a printing original plate attached to the outer circumferential surface of the plate cylinder main body which is rotated; and a printing ink supply member attached to the printing ink storage container. A printing ink supply device for a printing device comprising a doctor blade.