JPS6025752A - intaglio printing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to an intaglio printing machine.

[Prior art]

Intaglio printing presses are known as a version of rotary printing presses. FIG. 1 is a schematic side view of a conventional intaglio printing press of this kind. To explain this based on the figure, there is a space between a paper feeding device 2 on which paper 1 is loaded and a printing device 3 in front of it. is paper 1, which is fed out one by one from the upper layer by the sucker mechanism of paper feeder R2.
The difference plate 4 that receives the paper and adjusts the printing register, and the paper 1 on the difference plate 4
A swing device 5 that swings by holding the object in its mouth is provided.

In the printing unit 3, three sets of gripping claw devices 8 (hereinafter abbreviated as claws 8) each consisting of a claw 6 and a claw base 7 are arranged at positions that divide the outer circumference into three equal parts in the circumferential direction. A cylinder 9 is mounted on a shaft, and an intaglio cylinder 10 having the same diameter as t1, and a transfer cylinder 11 and a paper discharge cylinder 12 having a diameter of yv3 are in contact with this cylinder. Of these, the transfer cylinder 11 is provided with a pair of pawls having the same configuration as the pawls 8, and is configured to cause the pawl 8 of the impression cylinder 9 to change the grip of the gill 1 that has been gripped from the swing device 5 to the pawl 8. There is. A pair of left and right paper ejection chains 13 are stretched between a sprocket coaxial with the paper ejection cylinder 12 and a sprocket (not shown). Alternatively, a paper ejection claw is provided which conveys the paper as the paper ejection chain 13 runs. Furthermore, an intaglio plate formed of a flat surface as a non-printing part and a recessed part as a printing part is mounted on the surface of the intaglio cylinder 10. A plurality of inking rollers 14 are in contact with the surface of the intaglio plate, and a fountain roller 216 rotating within the ink fountain 15 is in contact with these rollers. Reference numeral 17 denotes a shaking roller which is in contact with the fountain roller 16 and smoothes the ink flowing out from the ink fountain 15. Furthermore, a cleaning liquid 1 is provided diagonally below the intaglio cylinder 10.
A wiping roller 2o that rotates in a cleaning liquid tank 19 in which cleaning liquid 8 is stored is in contact with the wiping roller 2o. In addition, the wiping roller 2
o rotates in the same direction as the intaglio cylinder 10, as shown by the arrow in the figure.

In the conventional intaglio printing machine configured as described above, the intaglio surface on the intaglio cylinder 10 is inked with three colors of ink that have been pulled up from each ink fountain 15 by the fountain roller 16 and smoothed by the vibration roller 1γ. It is applied by steps 1 to 14. In this case, ink is applied to the intaglio plate not only in the concave portions where it spreads in the image area but also on the flat surface where it spreads in the non-image area. Further, since the intaglio surface and the circumferential surface of the wiping roller 2o rotate in opposite directions at the contact points, the ink in the non-image areas is wiped off and ink remains only in the recesses formed by the image areas. On the other hand, the paper 8 that is conveyed from the transfer cylinder 11 to the impression cylinder 9 and the paper delivery chain 13 has a large mark of 1 toa/m2 when passing between the side cylinders 9 and 10. As pressure is applied, the ink in the intaglio depressions is transferred to the paper 8, resulting in intaglio printing.

In conventional intaglio printing machines configured as described above, there are two types of wiping methods for wiping off excess ink on the intaglio: a solvent method and an aqueous method.However, the solvent method mainly uses trichlorethylene, etc., so it is less harmful to the human body. In recent years, water-based methods have been widely used because organic solvents are harmful to the environment, sludge, and difficult to treat. In this aqueous method, the cleaning solution 1B is water, soda carbonate, and funnel oil.

A solution containing a surfactant is used, and this cleaning solution 18
The wiped ink is mixed with the wiping roller 20.
The liquid adhering to the surface is washed away into the liquid by a brush, a resin abrasive material, etc. provided in the cleaning liquid tank 19. However, many problems remain in such conventional wiping devices.

In other words, although it is an aqueous method, it is not harmful at all and it is difficult to dispose of the organic matter contained in the waste water after washing.Currently, this is treated by t-incineration, but it wastes energy to incinerate the water. You have to waste a lot. In addition, since the composition and temperature of the cleaning liquid have an immediate effect on the quality of printed matter, it is necessary to have a liquid circulation function and temperature control function that can manage this.1 These ancillary devices add to the overall cost of the printing machine. Ta. Furthermore, the mixed liquid of the cleaning liquid 18 and the wiped-off ink settles in the shape of a sludge at the bottom of the cleaning liquid tank 19.
This not only pollutes the cleaning liquid 18 and causes a change in #1 composition, but also causes a decline in the quality of printed matter and a decrease in work efficiency due to liquid replacement. Since most of the ink is wiped off by the roller 20 and cannot be recycled, it has the disadvantage of wasting an extremely large amount of ink.

[Summary of the invention]

The present invention is based on the above-mentioned points, and includes the original roller rotating in a container storing silicone liquid, the applicator roller that contacts the intaglio surface on the intaglio cylinder, and the contacting peripheral surface between these two rollers. A silicon coating device equipped with rollers that rotate in opposite directions is installed between the intaglio inking device, the impression cylinder, and the intaglio cylinder contact point, and is located downstream of the intaglio inking device in the direction of rotation of the intaglio cylinder. By configuring the wiping rollers attached with wiping vapor to face each other and feed at a slow speed in the direction opposite to the circumferential direction of the intaglio cylinder surface, the ink is repelled by the silicon applied only to the non-image areas. We provide an innovative intaglio printing machine that reduces ink consumption by inking only the concave image areas, and prevents pollution and improves the quality of printed materials by not using harmful and polluted cleaning fluids. Ruru. Embodiments of the present invention will be described in detail below with reference to the drawings.

〔Example〕

FIG. 2 is a schematic side view of an intaglio printing press according to the present invention.

In the drawings, the components designated by the same reference numerals as those in FIG. Arrow A in the diagram
An intaglio plate consisting of a flat surface as a non-image area and a recessed area as an image area is mounted on the surface of the intaglio cylinder 10 which rotates in the direction shown by . An inking roller 14 of an intaglio inking device is in contact with it.

On the upstream side of the intaglio cylinder 10 in the rotation direction of the intaglio cylinder 10 with respect to the ink applicator 21 and between the ink applicator 21 and the impression cylinder 9, a silicone coating device, generally designated by the reference numeral 22, is provided. This silicone coating device 22 has a container 24 that stores a silicone liquid 23.
A source U-225 is immersed in the silicone liquid 23, which is driven from the driving side and rotates in the direction shown by arrow A in the figure to pull up the silicone liquid 23. On the other hand, intaglio cylinder 1
Above the intaglio cylinder 10 is an applicator roller 26 which has the same length as the effective surface length of one of the intaglio cylinders 10 and is driven from the driving side and rotates at the same circumferential speed as the intaglio cylinder 10 in the direction shown by arrow B in the figure. is mounted on a shaft so as to be in contact with the intaglio surface on the intaglio cylinder 10. A metering roller 27 is provided between the original roller 25 and the application roller 2G.
and a transfer roller 28 are arranged with their surfaces facing each other, and the metering roller 27, the original roller 25, and the cedar rolling roller 2
B and the coating row 226 have their circumferential surfaces facing each other.

Both rollers 27 and 28 are driven from the driving side and rotate in the directions indicated by arrows C and D in the figure, respectively. That is, the original roller 25 and the metering roller 27 rotate in the same direction, and LfC causes both rollers 25.
The circumferential surfaces of 27 are rotating and sliding in opposite directions. Also,
The metering roller 27 and the transfer roller 28, the alignment roller 28 and the applicator roller 26, and the applicator row 226 and the intaglio cylinder 10 are rotating in opposite directions. In addition, each row 225,
The mutual contact pressure between 2F, 28 and the intaglio cylinder 10 is p! Further, each roller 25, 2γ, and 28 is provided with a speed change means for setting the peripheral speed to be the same as that of the application roller 26 or to a peripheral speed lower than that of the coating roller 26. The one designated by numeral 29 is supported by a bearing and is originally 12
The upper button 25 is placed under pressure by its own weight or spring means, and is rolled by a rider roller that smooths out the silicone liquid coating on the original roller 25.

On the other hand, on the downstream side of the intaglio cylinder 1o with respect to the intaglio plate 21 in the direction of rotation and between the intaglio plate 21 and the impression cylinder 9, a silicone coating device is used to coat the non-printing portions of the intaglio plate. A wiping device is provided to wipe off the applied silicone liquid. This wiping device 30 includes a wiping roller 3
1 and the wiping vapor 32 attached thereto, the wiping row 531 is composed of the wiping vapor 3
I through 2! ! It is brought into contact with the intaglio surface on the plate cylinder 1o.

The wiping roller 31 is made of synthetic rubber having a high hardness of 85° to 99°, and the wiping vapor 33 is made of paper having high wettability and tensile strength. The wiping vapor 33 is wound up into a drum shape and hung on a reel stand, and the paper end (which is pulled out in the direction shown by arrow E in the figure) is attached to the wiping roller 31 and then folded back and In other words, the wiping vapor 33 is sent at a slow speed in a direction opposite to the circumferential direction of the intaglio surface at the point of contact with the intaglio surface. A means for adjusting the contact pressure with the intaglio and the feed speed of the wiping vapor 32 is provided.

The operation of the intaglio printing press configured as above will be explained.

The paper 1 that has been sent onto the Zengen 4 and held by the claws of the swing device 5 is transferred to the claws 8 of the impression cylinder 9, and as the impression cylinder 9 rotates, it is wound around the surface of the impression cylinder 9 and becomes the intaglio cylinder 10. After passing through the gap, the paper is picked up by the claws of the paper ejection chain 13 and conveyed and ejected.

On the other hand, a silicon coating device 22 is applied to the intaglio surface on the intaglio cylinder 10.
A silicone liquid 23 is applied by. That is, when the original roller 25 rotates, the silicone liquid 23 in the container 24 is pulled up to form a film of the silicone liquid 23 on the circumferential surface of the original roller 25, and this film is smoothed by the rider roller 29 and then transferred to the metering roller 21. The film thickness is adjusted at , and the film is transferred to the application roller 26 via the transfer roller 28 and applied to the intaglio surface. In this case, the excess silicone liquid 23 is scraped off by the rider roller 29, and since the original roller 25 and the metering roller 2T are rotating and sliding in opposite directions at the contact points, the silicone liquid 23 forms a thin, uniform coating. and is applied to the intaglio surface. Furthermore, since the silicone liquid 23 has a thin coating, when it rotates in the recessed part of the intaglio, ink is deposited on the intaglio surface by three sets of inking devices 21, but the silicone liquid 23 has the property of not accepting ink. Therefore, the ink is not applied to the non-image area to which the silicone liquid 23 has been applied, but is applied so as to fill only the image area where the silicone liquid 23 is applied. When the intaglio cylinder 10 further rotates, 1. The wiping vapor 32 is in contact with the intaglio surface and is sent at a slow speed while sliding in the opposite direction, so that the silicone liquid 23 applied to the non-image areas is wiped off by the wiping vapor 32. In this case, since the wiping row 231 has high hardness, it can be easily wiped off. In this way, the intaglio plate with ink left only in the image area moves up the rotation of the intaglio cylinder 10 and reaches the contact point with the impression cylinder 9, so a large printing pressure is applied to the paper 8 between the two rivers 9 and 10. Intaglio printing is applied. The wiping vapor 32 after use is wound up with a winder and reused, but since it is inexpensive, it may be disposable once.

Although this embodiment shows an example in which two rollers 27.2B are provided between the original roller 25 and the application roller 26, the number may be one or three or more. In addition, in this embodiment, an example is shown in which one location is provided between the contact point and the base port 226 where the circumferential direction of the roller circumferential surface is opposite to each other and the sliding location is provided.
Two or more locations may be provided. Further, in this embodiment, the wiping roller 31 is made of synthetic rubber, but it may be made of natural rubber, and if it is made of PVA resin or PVC resin, it will have increased durability and will be more effective.

〔Effect of the invention〕

As is clear from the above description, in the intaglio printing press according to the present invention, the original roller rotating in a container storing silicone liquid, the applicator roller that contacts the intaglio surface on the intaglio cylinder, and between these two eyes. A silicon applicator equipped with a roller that rotates the opposing circumferential surface in opposite directions is installed between the intaglio inking device and the impression cylinder, and the intaglio cylinder contact point, and rotates the intaglio cylinder relative to the intaglio inking device. A wiping roller with a wiping vapor attached to the downstream side of the intaglio cylinder was purchased so that it was fed at a slow speed in the opposite direction to the circumferential direction of the intaglio cylinder surface, and the ink was applied with silicone liquid applied only to the non-image areas. By repelling the ink and attaching it only to the heddle, the silicone liquid on the valve surface is wiped off with wiping vapor.
Since one ink is consumed only in the printing area, the amount of ink consumed is significantly reduced and printing costs can be reduced, and since no cleaning liquid is used, pollution caused by organic solvents etc. is eliminated, making work easier. Safety is improved, and the quality of printed matter is improved without the risk of printing failures caused by contaminated cleaning fluid, etc.

In addition, by not requiring additional equipment to control the temperature or composition of the cleaning solution, it is possible to reduce equipment costs and improve crop yield, and also eliminates wasted energy consumed in processing organic matter, etc. The effect is extremely noticeable.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a conventional intaglio printing press, and FIG. 2 is a schematic side view of an intaglio printing press according to the present invention. 9... impression cylinder, 10... intaglio cylinder, 21... intaglio inking device, 22... silicon coating device, 23...
... Silicone liquid, 24 ... Container, 25 ... Original roller, 26 ... Application port ~ U, 27 - ψ ... Measuring roller, 28 ... ◆ - Transfer roller, 30 ... ...Wiping device, 31...φ wiping roller, 32...φ
Wiping vapor. Patent applicant Komori Printing Co., Ltd. Agent Masaki Yamakawa (and one other person)

Claims (1)

[Claims] A container for storing silicone liquid, a base roller that is immersed in the silicone liquid and rotates, an application roller that rotates with its curved surface facing the intaglio surface on the intaglio cylinder, and a space between the base roller and the application roller. a silicon coating device for intaglio printing, comprising at least one roller whose circumferential surfaces face each other and whose circumferential surfaces at at least one of these contact points rotate in opposite directions; Provided between the intaglio cylinder and the impression cylinder on the upstream side of the intaglio cylinder rotation direction with respect to the inking device,
A wiping paper (i7) having the same width as that of the intaglio is attached to the wiping roller, and this wiping roller is brought into contact with the intaglio surface via the wiping paper on the downstream side of the intaglio inking device in the direction of rotation of the intaglio cylinder. An intaglio printing machine characterized in that a wiping vapor is sent at a slow speed in a direction opposite to the circumferential direction of an intaglio surface by rotation of a wiping roller.