JPH0929941A - Ink supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink supply device capable of smoothly supplying highly viscous ink to the printing plate of a plate cylinder and capable of selecting both of printing performing the whole surface equal ink supply by keyless ink supply and printing performing the ink supply in quantity regulated at every section by non-keyless ink supply. SOLUTION: An embossed roller 3 of which the peripheral speed is higher than the rotary peripheral speed of a fountain roller is provided in close vicinity to the ink, which is drawn out downwardly from an ink fountain 1 by the fountain roller 2 through a first gap 13, through a second gap 33 and pressure, breakup and stretching are repeatedly applied to highly viscous ink by external force in the ink supply process in the stage before reaching a weighing roller from the ink fountain 1. By this constitution, the flowability of the ink is temporarily enhanced and both of printing of a keyless ink supply mode and printing of a non-keyless ink supply mode can be selectively performed by the related operation of the regulation means of the first gap of the ink fountain 1 and the changeover of a contact or rotary contact means to the weighing roller 5 of a doctor means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink supply device for a printing machine, and more specifically, the present invention is basically a so-called keyless or metering roller that does not require adjustment of the ink supply amount. Based on an ink supply device that can supply the ink to the entire surface of the plate with a uniform thickness of ink at all times, using the equipment of this keyless ink supply device, it is possible to handle inks of relatively high viscosity The present invention relates to a multifunctional ink supply device capable of performing.

[0002]

2. Description of the Related Art A conventional keyless ink supply device, for example, as shown in Japanese Patent Application Laid-Open No. 1-93397, immerses a part of the peripheral surface of a fountain roller (also known as ink source roller) in ink in an ink pan. By rotating the roller, the ink is guided above the peripheral surface of the roller, the ink is transferred to the downstream measuring roller, and excess ink is scraped off with a doctor blade that is in contact with the peripheral surface of the measuring roller. The amount is limited to the amount determined by the capacity of a large number of measuring cells (concave parts) provided on the entire peripheral surface of the measuring roller, which causes an approximately fixed amount of ink to remain and the ink to be evenly supplied to the entire plate surface. It was something.

[0003] However, the conventional keyless ink supply device described in the preceding paragraph is compatible with low-viscosity ink, but when high-viscosity ink is used, the adhesion of the ink to the peripheral surface of the fountain roller is low. As a result, the ink was insufficiently guided above the peripheral surface of the roller, and effective ink supply was not possible.

On the other hand, the applicant of the present application has disclosed Japanese Patent Publication No.
As shown in Japanese Patent No. 5244, the ink in the ink fountain formed by the swash plate and the peripheral surface of the fountain roller moves downward from the gap provided between the peripheral surface of the fountain roller and the lower end of the swash plate. A keyless ink supply device compatible with high-viscosity ink that can handle relatively high-viscosity ink is proposed by rotating the fountain roller so as to be derived.

[0005]

However, this keyless ink supply device compatible with high-viscosity ink has problems to be solved with respect to scattering of ink and insufficient pressing force.

[0006] First, the ink is scattered by receiving ink near the peripheral surface of the ink fountain roller, which rotates in response to the ink being drawn downward from the ink fountain. Since the rotation direction of the peripheral surface of the downstream roller that is passed is set to be opposite to each other, ink is scattered when ink transfers between them, and the amount of scattering increases especially when the rotation speed is high. In addition, not only does the supply efficiency of the ink decrease, but also the surrounding stain becomes severe.

Next, the high-viscosity ink drawn from the ink fountain reaches the peripheral surface of the measuring roller without increasing the fluidity due to the application of a large external force, and is also supplied to the peripheral surface of the measuring roller. Because a large pressing force does not work,
Ink does not adhere well to the concave part on the peripheral surface of the measuring roller,
In some cases, the desired ink supply cannot be achieved.

On the other hand, the greatest advantage common to all of the conventional keyless ink supply apparatuses, namely, a function of being able to always supply ink having a substantially uniform thickness over the entire surface of the printing plate without adjustment by an ink adjustment key. However, the use of high-viscosity ink may disadvantageously affect color printing. That is, in the current printing industry, in color printing using relatively high-viscosity ink, ink is often applied to only a very limited part of the printing surface, such as spotlight printing, for example, the newspaper advertisement "Hinomaru". In some cases, it is not necessary to supply ink to the entire printing surface.In such a case, if a conventional keyless ink supply device is used, ink is supplied even to parts that are originally unnecessary, The waste was a lot of waste, and the subsequent cleaning was troublesome, time-consuming, and inefficient.

[0009] On the other hand, conventionally, printing using a special color other than the usual three primary colors (yellow, cyan, magenta) and black (black), a so-called special color, using an ink having a higher viscosity than usual, There is high quality printing with excellent color gloss and volume using high-intensity three primary color inks and black ink, and in order to respond to that printing, it is necessary to specially install high quality printing equipment, It has been difficult to perform printing by also using printing equipment by keyless ink supply. Therefore, in order to cope with both of the above printings, the above two types of printing equipment must be kept at all times,
There was much waste.

An object of the present invention is to provide an ink supply apparatus which solves the problems described in the above items (0005) to (0009) at once.

A second object of the present invention is that, because of its high viscosity, it is difficult to adhere to the depressions on the peripheral surface of the measuring roller in the related art, and therefore the relatively high viscosity which cannot be smoothly supplied to the plate of the plate cylinder. For the ink of the above, the equipment that temporarily changes the high viscosity of the ink to the fluidity is installed in the ink supply path at the stage before reaching the depression on the peripheral surface of the measuring roller from the ink fountain
An object of the present invention is to provide an ink supply device capable of smoothly supplying ink to a plate of a plate cylinder by using a keyless ink supply device even if the ink has a relatively high viscosity.

A third object of the present invention is to provide an ink supply device dedicated to keyless ink supply, which is suitable for general uniform printing of ordinary quality using relatively high-viscosity ink.

A fourth object of the present invention is to use a relatively high-viscosity ink and to operate in a keyless ink supply mode suitable for general quality uniform even printing and for high quality partial printing. It is an object of the present invention to provide a multifunctional ink supply device capable of selectively switching operation in a non-keyless ink supply mode.

[0014]

SUMMARY OF THE INVENTION An ink supply device according to the present invention is a printing machine for supplying ink to a printing plate of a plate cylinder for printing, and a wearing roller having a peripheral surface which rotates in contact with the printing plate. When supplying ink, the peripheral surface rotates in contact with the peripheral surface of the upstream side of the forming roller, and the measuring roller in which a large number of minute concave portions for accommodating ink are evenly arranged on the peripheral surface, A second intermediate roller whose peripheral surface is in contact with the upstream peripheral surface of the metering roller and rotates, and a downstream side of the contact position between the second intermediate roller and the contact roller with the wearing roller. An ink fountain consisting of a doctor means that is in contact with the peripheral surface of the measuring roller on the upstream side, and the doctor means facing upward, the upper part and the front part are open, and both side plates and a slanted base. The ink fountain A peripheral surface is provided at a position that closes the front part and at a position that is close to the front edge of the base of the ink fountain via the first gap, and the peripheral surface at the position that closes the front part of the ink fountain is displaced downward. The fountain roller that rotates in the vicinity of the fountain roller on the downstream side of the fountain roller in the ink supply via a second gap that is narrower than the first gap, and on the upstream side of the first intermediate roller. The peripheral surface rotates in contact with the peripheral surface, and the peripheral surface rotates in contact with the peripheral surface on the downstream side of the concave-convex roller in the supply of ink, and the concave-convex roller in which irregularities are evenly arranged on the peripheral surface. First
Contacting both the peripheral surface of the intermediate roller and the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller, the peripheral surface rotates, or reciprocates with a predetermined stroke in the axial direction while rotating. Ink having a thickness corresponding to the first gap drawn by the rotation of the fountain roller is supplied to the peripheral surface of the uneven roller while being pressed when passing through the second gap. In addition, the compression and splitting caused by the contact between the peripheral surface of the uneven roller and the peripheral surface of the first intermediate roller, both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller, and the peripheral surface of the ink cylinder. Pressure and split resulting from circumferential rotational contact at the contact portion with the surface, or circumferential surface resulting from axial compression of the ink cylinder and compression and split resulting from the rotary contact. Is extended to the peripheral surface of the metering roller due to compression and splitting caused by extension in the direction and contact between the peripheral surface of the second intermediate roller and the peripheral surface of the metering roller, and further the fluidity is supplied to the peripheral surface of the metering roller. The excess ink on the peripheral surface of the ink is scraped back to the ink fountain with a doctor, while an approximately uniform amount of ink is supplied to the printing plate of the plate cylinder through the peripheral surface of the application roller at all positions along the axis of the measuring roller. It is characterized by doing.

In the ink supply device described in the preceding paragraph, the fine recesses of the measuring roller are hollows regularly provided on the peripheral surface, or hollow portions formed by being evenly distributed on the outer peripheral layer are opened on the peripheral surface. The doctor means consists of a recess, and the doctor means is a doctor blade, a doctor bar, a doctor roller that rotates at a peripheral speed lower than that of the metering roller, or a contact portion with the metering roller, which is displaced in the opposite direction to the displacement of the peripheral surface of the metering roller. And make it a doctor roller that rotates. In addition, the unevenness of the uneven roller is composed of a large number of regular projections having a circumferential surface separated by grooves.

Further, the ink supply device according to the present invention is
In a printing machine that supplies ink to the plate of the plate cylinder for printing, a contact roller that rotates in contact with the plate and the peripheral surface of the plate contact the upstream peripheral surface of the contact roller when supplying ink. A peripheral surface rotates, and a measuring roller in which a large number of minute concave portions for accommodating ink are evenly arranged on the peripheral surface,
A second intermediate roller whose peripheral surface rotates in contact with the upstream peripheral surface of the metering roller in the supply of ink, and a downstream side of a contact position between the second intermediate roller,
Also, a doctor means having a means for selectively switching between a position in contact with the peripheral surface of the measuring roller upstream of the contact position with the wearing roller and a position separated from the peripheral surface, and doctor means therefor Facing upwards, opening the upper part and the front part, and forming an ink fountain composed of both side plates and a slanted base, a position where the front part of the ink fountain is closed, and a front edge of the base of the ink fountain. A peripheral surface is provided at a position close to the fountain roller through a gap, and the peripheral surface at a position where the front part of the ink fountain is closed is displaced downward and rotates; And a first gap adjusting means provided in the ink fountain so as to be able to adjust each of the divided divisions according to the first division, and the first gap which is narrower than the first gap on the peripheral surface on the downstream side of the fountain roller in the ink supply. Close through the gap, and the first
In contact with the upstream peripheral surface of the intermediate roller, the peripheral surface rotates, and the concave and convex rollers having unevenness evenly arranged on the peripheral surface are contacted with the downstream peripheral surface of the concave and convex roller when supplying ink. Then, the peripheral surface rotates or rotates by contacting both the first intermediate roller whose peripheral surface rotates and the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller. And an ink cylinder that reciprocates with a predetermined stroke in the axial direction, fully opening the first gap, contacting the doctor means with the peripheral surface of the measuring roller, and rotating the fountain roller to fully open the first opening. The ink having a thickness corresponding to the gap 1 is supplied to the peripheral surface of the uneven roller while being pressed while passing through the second gap, and the peripheral surface of the uneven roller and the first intermediate roller are pressed. Pressure and splitting resulting from contact with the peripheral surface of the roller, resulting from circumferential rotational contact at the contact points of both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller with the peripheral surface of the ink cylinder. Compression and splitting, or compression and splitting resulting from the rotary contact, and circumferential surface axial extension resulting from axial reciprocating motion of the ink cylinder, and the circumferential surface of the second intermediate roller and the circumferential surface of the metering roller. Due to the pressure and the splitting caused by the contact of the ink, the fluidity is increased and the fluid is supplied to the peripheral surface of the measuring roller, and the excess ink on the peripheral surface of the measuring roller is scraped off by the doctor means in contact with the peripheral surface of the measuring roller. While returning to the ink fountain, a full amount of ink is supplied to the printing plate of the plate cylinder through the peripheral surface of the forming roller at a substantially uniform amount of ink at all positions along the axis of the measuring roller. The first gap is adjusted narrowly to the required size for each divided section by the adjusting means, the doctor means is separated from the peripheral surface of the measuring roller, and the desired thickness is obtained for each section from the ink fountain by rotation of the fountain roller. The ink drawn out in (1) is supplied to the peripheral surface of the concave / convex roller by an amount corresponding to the thickness of the ink in each section when passing through the second gap, and at the same time as the peripheral surface of the concave / convex roller and the first intermediate portion. Pressure and splitting resulting from contact with the peripheral surface of the roller, compression and splitting resulting from rotational contact at the contact portion between both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller and the peripheral surface of the ink cylinder. Or the compression and splitting resulting from the rotational contact and the axial extension of the circumferential surface resulting from the rotational and axial reciprocating motion of the ink cylinder, and the second intermediate roll. The pressure and splitting caused by the contact between the roller peripheral surface and the measuring roller peripheral surface increases the fluidity and is supplied to the peripheral surface of the measuring roller, and the ink supplied to the peripheral surface of the measuring roller is applied to the peripheral surface of the application roller. It is characterized in that it is possible to select either one of the ink supply which is supplied separately to the plate of the plate cylinder through the surface and the ink supply which is supplied separately.

In the ink supply device described in the preceding paragraph, the fine recesses of the measuring roller are hollows formed regularly on the peripheral surface, or hollow portions formed by being evenly distributed on the outer peripheral layer are opened on the peripheral surface. The doctor means consists of a recess, and the doctor means is a doctor blade, a doctor bar, a doctor roller that rotates at a peripheral speed lower than that of the metering roller, or a contact portion with the metering roller, which is displaced in the opposite direction to the displacement of the peripheral surface of the metering roller. And make it a doctor roller that rotates. In addition, the unevenness of the uneven roller is composed of a large number of regular projections having a circumferential surface separated by grooves.

Further, the ink supply device according to the present invention is
In a printing machine that supplies ink to the plate of the plate cylinder for printing, a contact roller that rotates in contact with the plate and the peripheral surface of the plate contact the upstream peripheral surface of the contact roller when supplying ink. A peripheral surface rotates, and a measuring roller in which a large number of minute concave portions for accommodating ink are evenly arranged on the peripheral surface,
A second intermediate roller whose peripheral surface rotates in contact with the upstream peripheral surface of the metering roller in the supply of ink, and a downstream side of a contact position between the second intermediate roller,
Also, a means for contacting with the peripheral surface of the measuring roller on the upstream side of the contact position with the wearing roller and selectively switching between rotation for scraping ink and rotation for not scraping ink from the peripheral surface of the measuring roller is provided. An ink fountain composed of a doctor roller, the doctor roller facing upward, the upper part and the front part being opened, both side plates and an inclined base, and a position for closing the front part of the ink fountain, and the ink fountain. A peripheral surface is provided at a position close to the front edge of the base through the first gap,
A fountain roller whose peripheral surface at a position where the front part of the ink fountain is closed is displaced downward and rotates, and the first gap is divided into divisions along the axial direction of the fountain roller so that the ink fountain can be adjusted. And a first clearance adjusting means for adjusting the first clearance and a peripheral surface on the downstream side of the fountain roller in the ink supply via a second clearance narrower than the first clearance and having a first intermediate position. The peripheral surface rotates in contact with the peripheral surface on the upstream side of the roller, and the concave-convex roller in which irregularities are evenly arranged on the peripheral surface, and in the supply of ink, contacts the peripheral surface on the downstream side of the concave-convex roller. The first intermediate roller whose peripheral surface rotates, and the first intermediate roller
And an ink cylinder that is in contact with both the peripheral surface of the intermediate roller and the peripheral surface of the second intermediate roller so that the peripheral surface rotates, or that rotates and reciprocates with a predetermined stroke in the axial direction, In addition to fully opening the first gap, the doctor roller was switched to rotate to scrape the ink from the peripheral surface of the measuring roller, and had a thickness corresponding to the first gap in the full opening drawn by the rotation of the fountain roller. The ink is supplied to the peripheral surface of the uneven roller while being pressed when passing through the second gap, and the compression and the splitting caused by the contact between the peripheral surface of the uneven roller and the peripheral surface of the first intermediate roller, Squeezing and splitting resulting from circumferential rotational contact at the contact points between both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller and the peripheral surface of the ink cylinder. Or, it is caused by the compression and splitting caused by the rotational contact, the axial extension of the peripheral surface caused by the axial reciprocating motion of the ink cylinder, and the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller. By pressing and splitting, the fluidity increases and is supplied to the peripheral surface of the measuring roller, and the excess ink on the peripheral surface of the measuring roller is scraped off by the doctor roller that rotates to scrape the ink from the peripheral surface of the measuring roller. While returning to the ink fountain, a uniform ink amount is supplied at every position along the axis of the measuring roller to the plate of the plate cylinder through the peripheral surface of the forming roller, and the first gap is provided. The adjustment means adjusts the size to the required size for each division, and the doctor means is rotated without scraping the ink from the peripheral surface of the measuring roller. The ink drawn to the desired thickness for each section from the ink fountain by switching and rotating the fountain roller passes through the second gap, and the amount of ink corresponding to the ink thickness for each section causes the uneven roller While being supplied to the peripheral surface, compression and splitting caused by contact between the peripheral surface of the uneven roller and the peripheral surface of the first intermediate roller, both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller. And compression and splitting resulting from rotational contact at the contact portion between the ink cylinder and the peripheral surface of the ink cylinder, or compression and splitting resulting from the rotary contact, and axial extension of the circumferential surface resulting from rotational and axial reciprocating motion of the ink cylinder, Also, due to the pressing and splitting due to the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller, the fluidity is increased and the fluid is supplied to the peripheral surface of the measuring roller. The pressure is applied by the peripheral surface of the doctor roller, which rotates without scraping the ink from the measuring roller on the roller surface, and the external force of splitting is applied to increase the fluidity, and the ink is applied to the plate cylinder through the peripheral surface of the application roller. It is characterized in that it is possible to select either one of the ink supply supplied to the printing plate and the ink supply supplied separately to the printing plate.

In the ink supply device described in the preceding paragraph, the fine recesses of the measuring roller are hollows regularly provided on the peripheral surface, or hollow portions formed by being evenly distributed on the outer peripheral layer are opened on the peripheral surface. The rotation of the doctor roller, which consists of depressions and does not scrape ink from the peripheral surface of the metering roller, is rotated by contact frictional force with the metering roller, or at the same peripheral speed as the peripheral surface of the metering roller. The rotation of the doctor roller that scrapes ink from the peripheral surface of the measuring roller is more than that of the measuring roller. The drive rotation is performed at a low peripheral speed, or the drive rotation is such that it rotates in the contact portion with the measuring roller in the direction opposite to the displacement of the peripheral surface of the measuring roller, and Convex is composed of a regular number of projections separated around grooves.

[0020]

The operation of the invention described in claims 1 to 9 will be described below.

First, when high-viscosity ink is put into the ink fountain, the fluidity is low despite the fact that a first gap is provided between the bottom front edge of the ink fountain and the peripheral surface of the fountain roller. Therefore, the ink is stored in the ink fountain without dripping from the first gap due to its own deformation.

Therefore, when the fountain roller is rotated in a direction in which the peripheral surface that closes the opening front portion of the ink fountain is displaced downward, the ink in the ink fountain touching the peripheral surface causes the peripheral surface of the fountain roller to rotate. The viscosity of the ink adheres to the displacement of the peripheral surface of the fountain roller, and as a result, the ink is withdrawn from the ink fountain while being rolled to a thickness that allows it to pass through the first gap.

In this way, by continuously rotating the fountain roller, the high-viscosity ink in the ink fountain is sequentially drawn out while adhering to the peripheral surface of the fountain roller with a constant thickness, and eventually the fountain roller of the fountain roller is The second gap is formed between the peripheral surface and the concave-convex roller that is close to the peripheral surface. The second gap is set narrower than the first gap. Therefore, the ink adhering to the peripheral surface of the fountain roller is further rolled by the passage of the second gap, and is pressed against the irregular surface of the irregular roller while reducing its thickness. The external force acting as described above causes a temporary softening phenomenon in the ink, and the fluidity of the ink temporarily increases.

The concavo-convex roller rotates in a direction in which the peripheral surface facing the peripheral surface of the fountain roller is displaced in the same direction as the peripheral surface of the fountain roller facing the peripheral surface, and the peripheral speed of rotation is the rotation of the fountain roller. It is set faster than the peripheral speed. Therefore, the transfer of ink from the peripheral surface of the fountain roller to the peripheral surface of the uneven roller is
The protrusions on the peripheral surface of the uneven roller cut into the ink adhering to the peripheral surface of the fountain roller, which rotates slower than that, and scrape off that portion, and the scraped ink is taken into the convex portion and the concave portion adjacent thereto. Done by

The ink supplied to the peripheral surface of the uneven roller reaches the contact position with the first intermediate roller by the rotation of the uneven roller, and is supplied to the peripheral surface of the first intermediate roller via the contact position. Further, the ink supplied to the peripheral surface of the first intermediate roller reaches the contact position with the ink cylinder by the rotation of the first intermediate roller, and reaches the contact surface with the ink cylinder via the contact position. Supplied. Further, the ink supplied to the peripheral surface of the ink cylinder is further supplied to the peripheral surface of the measuring roller via the second intermediate roller.

Ink is transferred from the uneven roller to the first intermediate roller, further from the first intermediate roller to the ink cylinder, and further from the ink cylinder to the metering roller via the second intermediate roller. When passing through the contact position of the surface, the pressing force is applied to the ink film due to the contact of the two roller peripheral surfaces, and
The ink adheres to and is separated from the peripheral surfaces of the two rollers, causing pressure and splitting in the ink film. These external forces acting on the ink further cause a temporary softening phenomenon in the ink, and the fluidity of the ink temporarily further increases, so that the ink is reliably and sufficiently supplied.

According to the second aspect of the present invention, in order to impart more fluidity to the high-viscosity ink, the ink cylinder is provided with means for causing axial reciprocating motion of a desired stroke. At the contact portions on both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller that come into contact with the surface, the ink is expanded in the axial direction of the peripheral surface by the rocking of the ink cylinder in the axial direction, and is stretched. Be done.

The ink supplied from the second intermediate roller to the peripheral surface of the measuring roller via the ink cylinder is
When the metering roller is rotated, it is carried to the contact position with the doctor means, and the excess ink on the peripheral surface of the metering roller is scraped off by the doctor means, and the scraped ink opens the upper part below the doctor means. It is collected in the ink fountain provided.

The doctor means, such as a doctor blade or a doctor bar, is an ink scraping type that does not change the contact portion with the peripheral surface of the measuring roller, and the contact portion with the peripheral surface of the measuring roller rotates like a doctor roller. There is a variable type, that is, an ink scraping type in which a doctor roller is rotated so as to be displaced in a peripheral surface speed slower than the peripheral surface speed of the metering roller and / or in a different direction, and the invention according to claim 1 to 9, Suitable for both types of ink scraping.

When the latter, that is, the variable rotation type ink scraping type doctor means is adopted in the preceding paragraph, it remains on the peripheral surface of the measuring roller by utilizing the elastohydrodynamic lubrication phenomenon. It is possible to adjust the amount of ink, which allows the printing density of the entire printing surface to be changed.

The ink on the peripheral surface of the measuring roller, from which the excess ink has been scraped off by the doctor means, reaches the contact position with the forming roller by the rotation of the measuring roller, and passes through the contact position to the peripheral surface of the forming roller. The ink supplied and further supplied to the peripheral surface of the forming roller reaches the contact position with the printing plate by the rotation of the forming roller, and the ink is supplied to the entire printing plate with a substantially uniform thickness.

Immediately after that, immediately after that, the peripheral surface downstream of the application roller after the contact with the printing plate has a thickness of the residual ink between the part where the ink is supplied to the image part of the plate and the part where the ink is not supplied. However, the subsequent rotation causes the same amount of ink to be supplied from the peripheral surface of the metering roller as described above to cancel the difference in the thickness of the ink, thereby supplying the ink to the printing plate and the metering roller. Ink supply from the peripheral surface of is continuously repeated.

Each of the rollers provided downstream of the uneven roller in the ink supply has a peripheral speed substantially equal to the peripheral speed of the plate of the plate cylinder, and the peripheral speed of the two rollers in contact with each other. The surfaces are displaced and rotated in the same direction at the contact position. Thereby, the supply of the ink to the downstream is performed smoothly, and unnecessary wear of each roller and generation of frictional heat are prevented.

Next, according to the invention described in claims 10 to 18 and the invention described in claims 19 to 27, when it is necessary to uniformly supply the entire surface of the printing plate, printing can be performed in a keyless ink supply mode. On the other hand, if the keyless ink supply is wasteful, inconvenient, or unsuitable for printing, the mode can be switched to the non-keyless ink supply mode for printing.

That is, the inventions according to claims 10 to 18 and the inventions according to 19 to 27 are, in the former case, by contact of the doctor means with the peripheral surface of the measuring roller, and in the latter case, from the peripheral surface of the measuring roller. By changing the rotation of the doctor roller from the rotation that does not scrape the ink to the rotation that scrapes the ink, excess ink can be scraped from the peripheral surface of the metering roller, and both of them are provided in the ink fountain.
By fully opening the gap adjustment means,
With the same operation as the invention described in claims 1 to 9, that is, as a keyless, it is possible to always supply ink substantially uniformly over the entire plate surface.

On the other hand, the inventions according to claims 10 to 18 and the inventions according to 19 to 27 are:
By separating the doctor means from the peripheral surface of the measuring roller, and in the latter case, the rotation of the doctor roller is switched from the rotation of scraping the ink from the peripheral surface of the measuring roller to the rotation of not scraping the ink to scrape excess ink. The first gap between the front edge of the ink fountain base and the peripheral surface of the fountain roller is divided into sections along the axial direction of the fountain roller by means of the first gap adjusting means provided on the ink fountain while being lost. Is adjusted in accordance with the distribution of the image on the printing plate surface, it is possible to supply a necessary and sufficient amount of ink for each section to a desired portion of the printing plate surface in a non-keyless manner.

In order to cut off the ink supply from the fountain roller to the concave-convex roller for each division for which the ink supply is unnecessary, the first gap between the front edge of the base of the ink fountain and the peripheral surface of the fountain roller is set. The first clearance adjusting means adjusts each section so that it is smaller than the second clearance between the peripheral surfaces of the fountain roller and the uneven roller.

Further, in order to supply the ink only to the limited divisions, the ink fountain is divided corresponding to the divisions and the ink is stored only in the divisions.

In the invention described in claims 19 to 27, when the doctor roller is rotated so as not to scrape the ink from the peripheral surface of the measuring roller, the doctor roller presses the ink on the peripheral surface of the measuring roller. And acts as a rider roller that splits it.

Further, in the eleventh and twentieth aspects of the invention, in any of the ink supply modes, the circumference of the first intermediate roller that contacts the circumferential surface of the ink cylinder is the same as in the second aspect of the invention. At the contact portions on both the surface and the peripheral surface of the second intermediate roller, the ink is extended and stretched in the axial direction of the peripheral surface due to the axial swing of the ink cylinder.

[0041]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the ink supply device according to the present invention will be described below with reference to the drawings. First,
FIG. 1 is a perspective view showing a schematic configuration of an embodiment of the present invention. In FIG. 1, an ink fountain 1 includes a base 11 that is inclined downward toward the peripheral surface of the fountain roller 2, and side plates 12, 12 that partition both sides of a groove formed by the base and the peripheral surface of the fountain roller 2. The upper part of the ink fountain 1 is opened, and the ink is stored in the groove. A first gap 13 (see FIG. 20) between the inclined lower end of the base 11 and the peripheral surface of the fountain roller 2.
The ink attached to the peripheral surface of the fountain roller is drawn out from the first gap 13 by the rotation of the fountain roller.

In the invention described in claims 1 to 9, the first gap 13 is constant and invariable as shown in the embodiments of FIGS. 5 to 7. On the other hand, in the invention described in claims 10 to 27, as shown in the embodiments of FIGS. 9 to 15, the first gap is provided for each divided section divided into a predetermined width along the axial direction of the fountain roller. The adjustment means 14 can adjust the width to be wide or narrow.

For example, as shown in FIG. 20, the adjusting means 14 fixes the bottom plate 142 to the inclined upper surface of the base 11 with an appropriate space, and the inclined upper surface and the bottom plate 14 are fixed.
2, a plurality of divided adjusting plates 141 having a thickness matched to this interval are provided side by side so as to be in contact with each other in the axial direction of the fountain roller 2, and the divided adjusting plates 141 are further provided on the peripheral surface of the fountain roller 2. A moving mechanism is provided so as to be able to move far and near.

This moving mechanism has a compression spring 146 for moving the division adjusting plate 141 away from the peripheral surface of the fountain roller 2.
And the split adjusting plate 141 against the force of the compression spring 146.
Push rod 143 which holds down and pushes back the rear end of the push rod 1
43, an end face cam 145 having a ring-shaped inclined surface facing the rear end, a cam follower 144 attached to the rear end of the pusher 143, and in contact with the inclined surface of the cam, and rotating the end cam 145. And a transmission mechanism 147 in which several gears for transmitting power from the drive source 148 are engaged. The drive source 14
8, an operation knob 149 is provided on one of the output shafts so that manual operation can be performed.

The open front edge portion of the ink fountain 1 is closed by the peripheral surface of the fountain roller 2 which is provided on the inclined lower end of the base 11 via the first gap 13 as described above.

The fountain roller 2 rotates in a direction in which the peripheral surface that closes the open front edge of the ink fountain is displaced downward, and the peripheral speed of rotation changes according to the change in the peripheral speed of the plate cylinder. It is slower than the peripheral speed of rotation of the cylinder, and its contrast is, for example, 1/30 to 1/100.

On the downstream side of the fountain roller 2 in the ink supply, a second gap smaller than the first gap 13 is formed.
The uneven roller 3 whose peripheral surface faces the peripheral surface of the fountain roller 2 in the gap 33 (see FIGS. 5 to 7 and FIGS. 9 to 15).

As shown in FIG. 4, a large number of protrusions 31 whose periphery is divided by grooves 32 are provided on the peripheral surface of the uneven roller 3.
The ink on the peripheral surface of the fountain roller 2 is easily received and accepted. The shape of the projection 31 is shown in FIG.
In addition to the diamond shape shown in FIG. 7, the shape may be a triangle, a circle, or the like. Further, instead of the regular unevenness as shown in FIG. 4, a peripheral surface having uniform satin-like unevenness may be provided.

The first intermediate roller 4 is, for example, a rubber roller having a rubber surface layer having a surface hardness of 20 to 40 degrees (Shore A), and the peripheral surface thereof is the uneven roller 3.
It is provided at a position in contact with both the peripheral surface of the ink cylinder 10 and the peripheral surface of the ink cylinder 10.
The peripheral surface of the roller is displaced and rotated in the same direction as the rotational direction of each of the peripheral surface of the concave-convex roller 3 and the ink cylinder 10 in contact therewith.

The ink cylinder 10 is provided on the downstream side of the uneven roller 3 in the ink supply via the first intermediate roller 4, and the peripheral surface of the upstream first intermediate roller 4 and the downstream second intermediate roller 41. A metal cylinder which contacts both of its peripheral surfaces and is generally coated with copper for better wetting of ink and better ink reception.

The ink cylinder 10 is driven and rotated at a peripheral speed substantially equal to the rotational peripheral speed of the plate of the plate cylinder 8 and in the same direction as the rotational direction of the plate cylinder 8, and further, the rotation is
At the contact portion with the peripheral surface of the upstream first intermediate roller 4, the peripheral surface is displaced and rotated in the same direction as the peripheral surface of the upstream first intermediate roller 4, while the downstream second intermediate roller. At the contact portion with the peripheral surface of 41, the peripheral surface is displaced and rotated in the same direction as the peripheral surface of the second intermediate roller 41 on the downstream side.

In such a rotating condition, the ink cylinder 10 has a well-known end, for example, Japanese Patent Publication No. 5/85, on its end shaft so as to reciprocate with a predetermined stroke in the axial direction.
An oscillation mechanism (not shown) is provided in association with each other as disclosed in Japanese Patent Publication No. 7-15552, and the ink cylinder 10 associated with this oscillation mechanism reciprocates in the axial direction by its rotation. The operation is set to reciprocate with a stroke of 10 to 50 mm per 20 revolutions of the ink cylinder.

The second intermediate roller 41 is, for example, a rubber roller having a rubber surface layer having a surface hardness of 20 to 40 degrees (Shore A), and the peripheral surface thereof is the same as the peripheral surface of the ink cylinder 10. The contact position of the second intermediate roller 41 with respect to the peripheral surface of the measuring roller 5 is greater than the contact position of the doctor means 6 in the rotation of the measuring roller 5. The peripheral surface of the second intermediate roller 41 is provided so as to contact the peripheral surface portion on the upstream side and downstream of the contact position of the wearing roller 7. The direction of rotation is
The peripheral surface of the second intermediate roller 41 is displaced and rotated in the same direction as the rotational directions of the peripheral surfaces of the ink cylinder 10 and the measuring roller 5 which are in contact with the second intermediate roller 41.

Second intermediate roller 4 in ink supply
On the downstream side of 1, a measuring roller 5 and a wearing roller 7,
The peripheral surfaces of the forming roller 7 are provided in contact with each other, and the peripheral surface of the forming roller 7 is provided in contact with the printing plate of the plate cylinder 8. Then, the second intermediate roller 41, the measuring roller 5, the wearing roller 7
In both cases, the plate is rotated at a peripheral speed substantially the same as the peripheral speed of the plate cylinder.

Further, the fountain roller 2, the uneven roller 3, the first intermediate roller 4, the ink cylinder 1
0, the second intermediate roller 41, the metering roller 5, the wearing roller 7, the peripheral surfaces of both rollers are displaced in the same direction and rotate at mutually opposing portions or mutual contact portions,
At the contact portion with the printing plate, the mounting roller 7 is displaced in the same direction as the displacement direction of the printing plate at its peripheral surface.

The layout of the above roller arrangement, that is, the first intermediate roller 4 is supplied with ink from the concave-convex roller 3, and in the process of supplying this ink to the ink cylinder 10 on the downstream side, the ink is pressed and divided. The ink is repeatedly applied twice, and by repeating this, the fluidity of the ink temporarily increases due to a temporary softening phenomenon, and favorable conditions are set for the downstream supply.

The flowability of the ink is further increased by the compression and splitting due to the rotational contact between the ink cylinder 10 and the second intermediate roller 41 downstream thereof, while the flowability is further increased. Since the ink cylinder 10 oscillates (oscillates) in the axial direction, the peripheral surface of the ink cylinder 10, the peripheral surface of the upstream first intermediate roller 4 and the downstream second intermediate roller 41.
At the contact portions with both the peripheral surfaces of the ink, a force that extends in the axial direction of the ink cylinder 10 is applied to the ink passing therethrough, so that the ink is spread and thinly spread in the axial direction of the ink cylinder 10. The liquidity is further increased by the addition.

When the supply device including the ink cylinder 10 and the first and second intermediate rollers 4 and 41 contacting the peripheral surface of the ink cylinder 10 is used in a printing machine using dampening water. When the dampening water enters the above-mentioned structure, the dampening water is compressed and split by the contact between the cylinder and the roller, and is expanded in the axial direction by the axial oscillation (oscillation) operation of the ink cylinder 10. At the same time, the heat generation due to the repeated elastic deformation accompanying the rotational contact of the first and second intermediate rollers 4 and 41 whose peripheral surfaces are rubber layers is transmitted to the dampening water, and at the same time It is possible to remove the invading water by evaporating it.

Now, in the stage before the high-viscosity ink drawn from the ink fountain 1 is supplied to the peripheral surface of the measuring roller 5, as described above, the ink to which the sufficient fluidity is physically given is It is supplied to the peripheral surface of the measuring roller 5 via the peripheral surface of the second intermediate roller 41.

As shown in FIG. 2, a large number of fine recesses capable of accommodating a predetermined amount of ink are evenly arranged on the peripheral surface of the measuring roller 5. The concave portions are the measuring rollers 5
Microcavities 55 that are evenly distributed in the base material 54 that constitutes the outer peripheral layer 53, that is, specifically, for example, synthetic resin of the base material 54 has a diameter of 5 to 300 called a microballoon.
The outer peripheral layer 53 of the roller is formed by mixing and dispersing minute hollow bodies of about μm.

The base material 5 constituting the outer peripheral layer 53 as described above.
The measuring roller 5 in which the minute cavities 55 are evenly dispersed in
When receiving the ink scraping action by the doctor means 6 described later, even if the peripheral surface of the measuring roller 5 is worn out and the microcavity 55 opening on the surface disappears, the microcavity 55 located below the same is removed. Since the ink is newly opened on the surface, a significant change does not occur in the amount of ink accommodated in the concave portion of the peripheral surface as the measuring roller 5.

The measuring roller 5 having an outer peripheral layer obtained by mixing and dispersing a fine hollow body in the above synthetic resin is formed, for example, to have a surface hardness of 70 to 100 degrees (Shore A).

As shown in FIG. 3, the concave portion of the peripheral surface of the measuring roller 5 may be formed by regularly arranged depressions (cells) 51 and a bank 52 surrounding the depressions. Such a depression 51 is formed at a density of 80 to 200 lines / cm by subjecting a material such as a metal, a synthetic resin, and tungsten carbide to rolling, laser processing, corrosion, or the like.

The doctor means 6 comes into contact with the peripheral surface of the measuring roller, which is downstream of the contact position with the intermediate roller 4 and upstream with respect to the contact position with the wearing roller in the rotating direction of the measuring roller 5. And the specific configuration is, for example, the doctor blade 6 shown in FIG.
1, a doctor bar 62 shown in FIG. 6 and a doctor roller 63 shown in FIG. 7, all of which contact the peripheral surface of the weighing roller 5 during the printing operation over the entire length thereof. Excessive ink is scraped off from the peripheral surface.

First, in FIG. 5, the doctor blade 61 is a blade 6 that contacts the peripheral surface of the measuring roller 5.
11 and a blade holder 612 supporting the same, and are supported by a frame (not shown).

Next, referring to FIG. 6, the doctor bar 6
2 is a bar 621 that contacts the peripheral surface of the measuring roller 5,
Backup stay 6 that suppresses the bending deformation of the bar
22 and is supported by a frame (not shown).

Further, in FIG. 7, the doctor roller 63 is composed of a doctor roller 63 which contacts the peripheral surface of the measuring roller 5, and is rotatably supported by a frame (not shown).

In the present invention, the doctor roller 63 is designed to have various driving mechanisms listed below so as to correspond to various printing modes. That is, as shown in FIG. 8, the doctor roller 63 can rotate at a rotation peripheral speed lower than that of the measuring roller 5 and in a direction in which the peripheral surface is displaced in the same direction as the peripheral surface of the measuring roller 5 at the contact portion. A simple drive mechanism is provided. Alternatively, as shown in FIGS. 18 and 19, the doctor roller 63 can be driven in a direction in which the peripheral surface is displaced in a direction opposite to the peripheral surface of the measuring roller 5 at the contact portion regardless of the rotational peripheral speed. Provide a mechanism.

The drive mechanism 64 shown in FIG. 8 rotates the transmission gear 643 located on the drive upstream side through the gear 642 on the metering roller side attached to the end shaft of the metering roller 5.
The transmission to the gear 641 on the doctor roller side attached to the end shaft of the doctor roller 63,
Is transmitted in such a manner that its peripheral surface is displaced in the same direction as the peripheral surface of the measuring roller 5 at the contact portion with the measuring roller 5 and rotates at a rotational peripheral speed lower than the rotational peripheral speed of the measuring roller.

The drive mechanism 65 shown in FIG. 18 is provided integrally with the first gear 652 on the measuring roller side, which is attached to the end shaft of the measuring roller 5 for rotating the transmission gear 654 located on the drive upstream side, and this gear 652. The second gear 653 on the measuring roller side and the gear 65 on the doctor roller side attached to the end shaft of the doctor roller 63 via the intermediate gear 655 rotatably supported on the frame 9 by appropriate means.
To transmit the power so that the doctor roller 63 rotates in such a manner that the peripheral surface of the doctor roller 63 is displaced in a direction opposite to the peripheral surface of the measuring roller 5 at a contact portion with the measuring roller 5.

The drive mechanism 66 shown in FIG. 19 is provided with an independent doctor roller drive source 664 on the drive upstream side, and the rotation of this drive source 664 is transferred to a drive source side pulley 663 attached to the output shaft of the drive source 664. , Doctor roller 6
Pulley 6 on the doctor roller side attached to end shaft 3
It transmits to the doctor roller 63 via the transmission belt 665 hung over 61 and drives it to rotate.

In this drive source 66, the doctor roller 6
In selecting the rotation direction of No. 3, the rotation direction of the drive source 664 can be changed by selecting either the right rotation or the left rotation. Further, the rotation peripheral speed of the doctor roller 63 can be changed by controlling the number of rotations of the output shaft of the drive source 664 per unit time. The change in the rotational peripheral speed of the doctor roller 63 makes it possible to change the thickness of the ink passing through the contact portion between the metering roller 5 and the doctor roller 63 by using the elastic fluid lubrication phenomenon, whereby the entire printing surface is Concentration can be changed. In addition, the doctor roller 63
The driving rotation can be performed in both a rotation for scraping the ink from the peripheral surface of the measuring roller 5 and a rotation for not scraping the ink from the peripheral surface of the measuring roller 5. Doctor roller 63
It is desirable to select the material and hardness according to the material and hardness of the surface of the measuring roller 5.

Further, in this drive mechanism 66, in order to reliably transmit the rotation to the doctor roller 63, the pulley 663 on the drive source side and the pulley 66 on the doctor roller side are provided.
1 is a toothed pulley, and the transmission belt 665 is desirably a toothed belt that meshes with the teeth of the pulley and is transmitted. The position of the belt pulley 662 is set so that the slack of the transmission belt 665 can be removed. It is urged against the surface of the transmission belt 665 by the force of the torsion spring 666 so that it can be displaced in accordance with the change in looseness.

In the embodiment of FIG. 19, the measuring roller 5 is driven by, for example, a drive mechanism (not shown) linked to the opposite end shaft.

The depositing roller 7 is supplied with substantially uniform ink over its entire length from the peripheral surface of the measuring roller 5 after the excess ink has been scraped off by the doctor means 6, and this ink is applied to the plate of the plate cylinder 8. Supply. Wearing roller 7
Is a roller having a rubber surface layer having a surface hardness of 20 to 40 degrees (Shore A), for example.

In the invention described in claims 9 to 18, the doctor means 6 is provided at a position which is in contact with the measuring roller 5 and a position which is not in contact with the measuring roller 5, that is, a position separated from the measuring roller 5, during printing operation. It is provided so that it can be selectively changed.

As shown in the embodiments of FIGS. 9 and 10, when the doctor means 6 is the doctor blade 61, the doctor holder 612 is attached to a holder displacement shaft 613 which is angularly displaceable on the frame. And a mounting / dismounting arm 614 that is displaceably attached to the holder displacement shaft 613, and a blade 611 is attached to and detached from the open end of the contact / separation arm 614 to and from the peripheral surface of the weighing roller 5. The output rod of the fluid pressure cylinder 615, which is the source, is connected, and this fluid pressure cylinder 615 is attached by a fluid pressure cylinder support shaft 616 to a frame (not shown) so that angular displacement is possible, and the blade 611 is attached to the metering roller 5. A rotational displacement mechanism for contacting and separating with respect to the peripheral surface of.

As shown in the embodiment of FIGS. 11 and 12,
When the doctor means 6 is the doctor bar 62, stay end shafts 623 are provided at both ends of the backup stay 622 so as to be angularly displaceable on a frame (not shown), and the doctor blade 61 is attached to at least one of the stay end shafts 623. A mechanism (not shown) similar to that in the case of (1) is linked, and this is a rotation displacement mechanism for bringing the bar 621 into and out of contact with the peripheral surface of the measuring roller 5.

As shown in the embodiment of FIGS. 13 and 14,
When the doctor means 6 is the doctor roller 63, as shown in FIG. 16, both ends of the doctor roller 63 are supported by the frame 9 through the eccentric sleeve 631, and the eccentric sleeve 631 holds the doctor roller 63. The mechanism for contacting and separating from the peripheral surface of. That is, the eccentric sleeve 631 is angularly displaced with respect to the frame 9 by an appropriate means, and the doctor roller 63 is brought into contact with the measuring roller 5 (FIG. 13).
And the position away from the weighing roller 5 (FIG. 14). The driving mechanism for rotating the doctor roller 63 is, as shown in FIG.
4 (FIG. 8) or the drive mechanism 66 (FIG. 19) or 65 (FIG. 18).

On the other hand, in the invention described in claims 18 to 27, the doctor roller 63 is provided so as to come into contact with the peripheral surface of the measuring roller 5 during the printing operation, and the rotation of the doctor roller 63 is changed from the measuring roller 5 to the ink. It is provided so that it can be selectively changed between rotation for scraping and rotation for not scraping.

First, the rotation of the doctor roller 63 for scraping the ink from the measuring roller 5 is such that the rotation peripheral speed of the doctor roller 63 is slower than the rotation peripheral speed of the measurement roller 5, or the rotation of the doctor roller 63 is the measurement roller. 5 is a rotation in which the peripheral surface of the contact portion with 5 is displaced opposite to the displacement of the peripheral surface of the weighing roller 5, and
The rotation of the doctor roller 63 that is not scraped is rotation in which the doctor roller 63 displaces its peripheral surface in the same direction as the displacement of the peripheral surface of the measuring roller 5 at the contact portion with the measuring roller 5, and Doctor roller 63
The rotation peripheral speed of is approximately the same as the rotation peripheral speed of the measuring roller 5.

Next, as shown in FIG. 17, a mechanism for selectively changing the rotation of the doctor roller 63 as described above is the same as the gear 641 on the doctor roller side in the drive mechanism 64 of FIG. 8 described above. An electromagnetic clutch 644 is provided between the doctor roller 63 and the doctor roller 63. The electromagnetic clutch 644 allows the gear 64 on the doctor roller side to be provided.
A mechanism for switching between a state in which the rotation transmitted to 1 is transmitted to the doctor roller 63 and a state in which the doctor roller 63 is completely separated from the drive mechanism 64.

A similar mechanism is similar to the drive mechanism 66 shown in FIG.
The drive mechanism 65 shown in FIG.

Further, in the drive mechanism 66 shown in FIG. 19, as previously mentioned, the rotation of the doctor roller 63 is changed by appropriately setting and switching the rotation number of the drive source 664 per unit time. It is possible to change the rotation for scraping the ink from 5 and the rotation for not scraping the ink.

In each of the embodiments described above, when printing that requires normal printing quality, that is, printing by supplying a keyless ink, as shown in FIGS. 5 to 7, the base 11 of the ink fountain 1 or the first base is used. The first of the division adjusting plate 141 of the gap adjusting means 14 and the peripheral surface of the fountain roller 2
When the doctor means 6 is the doctor roller 63, the doctor roller 63 scrapes the ink from the peripheral surface of the measuring roller 5 when the doctor means 6 is in contact with the peripheral surface of the measuring roller 5. The printing operation is performed by selecting the rotation.

On the other hand, when the printing or the printing image which is required to have higher quality exists only in a partial area in the axial direction of the plate cylinder 8, the printing is performed by the non-keyless ink supply. That is, as shown in FIGS.
Embodiments corresponding to the inventions described in claims 9 to 24 (FIG. 9)
15 to the first gap width adjusting means 1.
4, the dividing adjustment plate 141 is moved to the fountain roller 2
The first gap 13 between the tip of the split adjusting plate 141 and the peripheral surface of the fountain roller 2 is adjusted with respect to the peripheral surface of the fountain roller 2.
In accordance with the distribution of the printing plate image of the plate cylinder 8 in each of the divided sections in the axial direction of the plate cylinder 8 so that a desired amount of ink can be drawn out. When the doctor roller 63 cannot be separated from the peripheral surface of the measuring roller 5 by the doctor roller 63, or the doctor means 6 cannot be separated from the peripheral surface of the measuring roller 5, the doctor roller 63 rotates so as not to scrape ink from the peripheral surface of the measuring roller 5. And print operation.

When the printing image is printed on a printing plate which is present only in a part of the plate cylinder 8 in the axial direction, printing is performed by non-keyless ink supply. At that time, as shown in FIG.
The ink fountain partitioning means 15 is attached to a portion of the printing plate which matches the area of the printing image.
When the printing operation is performed by storing the ink in the ink, the area to which the ink adheres in the ink supply is limited, the waste of the ink can be reduced, and the cleaning of the ink fountain 1 or the like after the printing operation is limited to only the limited area. It is very easy.

The ink fountain partition means 15 is a bottom plate 1 for partitioning.
51, a partition side plate 152 and a handle 153 for facilitating the handling of the ink fountain partitioning means 15. The front side of the partition side plate 152 is a rotating fountain roller 2.
Is formed so as to be in close contact with the peripheral surface of the fountain roller 2, and the concave curved surface is formed of a material having a low hardness such as a synthetic resin or a synthetic resin so as not to damage the peripheral surface of the fountain roller 2. It is formed of lead or the like. Also,
The partition bottom plate 151 reduces the size of the maximum opening of the first gap 13 between the division adjusting plate 141 and the peripheral surface of the fountain roller 2 when the ink fountain partitioning means 15 is brought into close contact with the ink fountain 1. Is set so that there is no gap, and the facing distance between the two partitioning side plates 152 is set to be slightly wider than the printing image area of the printing plate.

In the keyless ink supply, when the ink is scraped from the measuring roller 5 by the doctor means 6,
The presence or absence of the ink causes a very large difference in the frictional force between the doctor means 6 and the measuring roller 5, causing uneven wear on the peripheral surface of the measuring roller 5. No supply can be made.

[0090]

In the ink supply device according to the present invention, firstly, a high viscosity ink is temporarily softened, that is, a mechanism for temporarily increasing fluidity is provided before the ink fountain reaches the metering roller. By superimposing it on each part of the ink supply path in, it was possible to supply high-viscosity ink to the plate surface of the plate cylinder reliably and smoothly.
That is, if this is sequentially described from the configuration according to the present invention, from the first gap between the front edge of the ink fountain base and the fountain roller, while riding on the peripheral surface of the fountain roller, downward, When the roll is rolled to the thickness corresponding to the first gap and the ink in the ink fountain is pulled out to the outside, the initial temporary softening begins due to the external force due to the rolling, and the ink is further removed from the peripheral surface of the fountain roller. When moving to the uneven peripheral surface of the uneven roller via the second clearance narrower than the first clearance, the peripheral speed rotation of the uneven roller is set to be faster than the peripheral speed rotation of the fountain roller to forcibly press the ink. And splitting to further promote temporary softening so that it easily adheres to the concave portion of the concave-convex roller, and further, the contact between the concave-convex roller and the first intermediate roller, the first In the invention that presses and splits ink repeatedly at each stage of contact between the intermediate roller and the ink cylinder and contact between the ink cylinder and the second intermediate roller, the ink cylinder reciprocates with a predetermined stroke in the axial direction. In addition to the above, in the contact portions of both the peripheral surface of the ink cylinder and the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller,
By extending the ink in the axial direction, it is configured to supply the ink to the peripheral surface of the metering roller through a process of making the ink more fluid enough, so that the viscosity of the metering roller is inherently high, The ink that was difficult to adhere to the dents on the peripheral surface is made sufficiently fluid by the action of repeated external force, and easily adheres to the dents on the peripheral surface of the measuring roller. It has become possible to reliably, smoothly, and continuously supply high-viscosity ink, which has been impossible until now, to the printing plate of the plate cylinder.

Further, the present invention, which facilitates the supply of the high-viscosity ink to the printing plate as described above, has opened the way to sufficiently cope with the multi-functionality of the printing mode. That is, on the other hand, it can provide a multifunctional printing machine having an ink supply that can be shared as a facility for high-quality printing, while having a function as a facility for normal-quality printing. I made it.

First, as a facility corresponding to normal quality printing, when the whole surface uniform printing mode by the keyless ink supply is desired, the first gap adjusting means provided in the ink fountain is described in claims 1 to 9. In the invention of claim 1, it is not necessary, and in the inventions of claims 10 to 18 and the inventions of claims 19 to 27, it is used as a full opening, while including a doctor blade, a doctor bar, and a doctor roller. Regarding the switching of the doctor means, the invention according to any one of claims 1 to 9 does not require the switching means and brings it into contact with the peripheral surface of the weighing roller, and the invention according to any one of claims 10 to 18 and claim 19 Through 2
In the invention described in 7, the contact or, in the case of the doctor roller, the rotation of the doctor roller is changed to the ink scraping rotation by the switching operation of the switching means.
In other words, it is possible to realize that by switching the peripheral speed lower than the peripheral speed of the measuring roller or rotating the peripheral speed of the doctor roller in the contact position with respect to the peripheral surface of the measuring roller in the opposite direction. I can do it now.

Next, when a partial printing mode by non-keyless ink supply is desired as equipment for high quality printing, that is, the invention according to claims 10 to 18 and the invention according to claims 19 to 27. In the invention, the first gap adjusting means provided in the ink fountain is actuated to narrowly adjust to a required size for each divided section, while the doctor blade, the doctor bar, and the doctor roller including the doctor roller are switched to change the operation. In the separation, or the doctor roller, in addition to separation, the rotation of the doctor roller is changed to rotation that does not scrape ink, that is, the contact surface with the measuring roller has the peripheral surface in the same direction as the peripheral surface of the measuring roller. It is possible to realize that by displacing and switching to the rotation whose rotation peripheral speed is the same as the rotation peripheral speed of the measuring roller. It became.

Further, the present invention includes an ink supply device provided with an ink cylinder and first and second intermediate rollers which come into contact with the peripheral surface of the ink cylinder, and the ink supply device uses dampening water. When used in a printing machine,
When the dampening water flows back into the above mechanism, the dampening water is pressed and divided by the contact between the ink cylinder and the first and second intermediate rollers, and the ink cylinder is rocked in the axial direction. (Oscillation) In the invention that operates, the axial extension resulting from this operation significantly reduces the film thickness of the dampening water, while the peripheral surface is accompanied by the rotational contact of the first and second intermediate rollers having the rubber layer. The heat generated by the repeated elastic deformation is transmitted to the dampening water, and the invading water is vaporized and removed by the heat, so that the above-described structure is also effective for removing the penetrating dampening water.

[Brief description of drawings]

1 is a perspective view schematically showing an embodiment (claims 1, 2 and 5) of an ink supply device according to the present invention,

FIG. 2 is an enlarged view including a partial cross-section of a part of the peripheral surface of an embodiment of the peripheral surface of the measuring roller in the ink supply device according to the present invention (claims 3, 12 and 21);

FIG. 3 is another embodiment of the peripheral surface of the measuring roller in the ink supply device according to the present invention (claims 4, 13 and 22).
An enlarged view including a partial cross section of a part of its peripheral surface,

FIG. 4 is an enlarged view showing an embodiment (claims 9, 18 and 27) of a peripheral surface of a concavo-convex roller in the ink supply device according to the present invention, including a partial cross section of a part of the peripheral surface;

5 is a side sectional view of FIG. 1, showing a keyless-dedicated embodiment (claims 1, 2 and 5) in which the doctor means is a doctor blade.

FIG. 6 is a side sectional view showing a keyless-dedicated embodiment (claims 1 and 6) in which the doctor means is a doctor bar in the ink supply device according to the present invention;

FIG. 7 is a side sectional view showing a keyless-dedicated embodiment (claims 1 and 7) in which the doctor means is a doctor roller in the ink supply device according to the present invention;

8 is an enlarged view of a main part including a partial cross section showing an example of a driving mechanism of the doctor roller shown in FIG. 7,

FIG. 9 is a side sectional view showing a keyless ink supply mode in an embodiment of a keyless non-keyless dual type in which a doctor means is a doctor blade in the ink supply device according to the present invention;

FIG. 10 is the embodiment of FIG. 9 (claims 10, 11 and 14);
Side sectional view showing a non-keyless ink supply mode in,

FIG. 11 is a side sectional view showing a keyless ink supply mode in an embodiment of a keyless non-keyless dual type in which a doctor means is a doctor bar in the ink supply device according to the present invention;

FIG. 12 is an embodiment of FIG. 11 (claims 10, 11 and 1);
5) is a side sectional view showing the non-keyless ink supply mode in FIG.

FIG. 13 is an embodiment of a keyless non-keyless dual type in which the doctor means is a doctor roller in the ink supply device according to the present invention (claims 10, 16, 19, 20 and 2).
5) A side sectional view showing the keyless ink supply mode in FIG.

14 is an embodiment of FIG. 13 (claims 10, 11 and 1);
6) is a side sectional view showing the non-keyless ink supply mode in 6),

FIG. 15 is a side sectional view showing a non-keyless ink supply mode in the embodiment shown in FIG. 13 (claims 19, 20, 23 and 24);

FIG. 16 is an embodiment (claims 10 and 1) of FIGS. 13 and 14;
1 and 16) the drive mechanism of the doctor roller,
An enlarged view of the main part including a partial cross section showing an example of a means for contacting and separating the doctor roller from the measuring roller,

FIG. 17 is an embodiment of FIG. 15 (claims 19, 20 and 2);
In 3), an example of turning on and off the transmission of power to the doctor roller in a mode in which the doctor roller is in contact with the measuring roller, that is, an embodiment in which the doctor roller rotates together with the rotation of the measuring roller when it is off. An enlarged view of the main part including a partial sectional view shown

FIG. 18 shows the embodiment of FIGS. 7, 13 and 15;
In the mode in which the doctor roller is in contact with the measuring roller, the rotation of the peripheral surface of the doctor roller is reversed at the contact position with respect to the rotation of the peripheral surface of the measuring roller. Enlarged view,

FIG. 19 shows an embodiment of FIGS. 7, 13 and 15;
Example of a drive mechanism capable of switching the rotation of the peripheral surface of the doctor roller in both forward and reverse directions at the contact position with respect to the rotation of the peripheral surface of the measurement roller in a mode in which the doctor roller is in contact with the measurement roller, and changing the rotation speed. An enlarged view of a main part including a partial cross section showing

FIG. 20 is a vertical cross-sectional view showing one embodiment of the first gap adjusting means provided in the ink fountain in the ink supply device according to the present invention;

FIG. 21 is a perspective view showing an embodiment of a partitioning means for dividing an ink fountain in the ink supply device according to the present invention and using a part thereof;

[Explanation of symbols]

1 Ink fountain 11 Base 12 Side plate 13 First gap (between ink fountain base front edge and fountain roller peripheral surface) 14 First gap adjusting means (Fig. 20) 141 Plural division adjusting plates 142 Bottom plate 143 Push rod 144 Cam follower 145 End surface cam 146 Compression spring 147 Transmission mechanism 148 Drive source 149 Operation knob 15 Partition means (Fig. 21) 151 Partition bottom plate 152 Partition side plate 153 Handle 16 Ink 2 Fountain roller 3 3 4) 32 groove 33 2nd gap 4 1st intermediate roller 41 2nd intermediate roller 5 measuring roller 51 hollow (cell) (FIG. 3) 52 bank 53 outer peripheral layer 54 base material 55 microcavity (FIG. 2) 6 Doctor means 61 Doctor blade (Fig. 5) 611 Blade 612 Blade holder -613 Holder displacement shaft 614 Arm for contact / separation 615 Fluid pressure cylinder 616 Support shaft for fluid pressure cylinder 62 Doctor bar (Fig. 6) 621 Bar 622 Backup stay 622 End end shaft 63 Doctor roller (Fig. 7) 631 For contact / separation Eccentric sleeve (Fig. 16) 64 Doctor roller drive mechanism (Fig. 8) 641 Doctor roller side gear 642 Metering roller side gear 643 Drive upstream transmission gear 644 Electromagnetic clutch 65 Doctor roller drive mechanism (Fig. 18) 651 Doctor Roller side gear 652 Measuring roller side first gear 653 Measuring roller side second gear 654 Transmission gear 655 Intermediate gear 66 Doctor roller drive mechanism (Fig. 19) 661 Doctor roller side pulley 662 Belt tensioning pulley 6 3 driving source side of the frame 10 ink cylinder of the pulley 664 driving source 665 transmission belt 666 Nerijibane 7 for the belt tensioning wearing roller 8 edition cylinder 9 printing press

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[Procedure amendment]

[Submission date] October 17, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0076

[Correction method] Change

[Correction contents]

According to the tenth to twenty-seventh aspects of the present invention, the doctor means 6 is provided at a position in contact with the measuring roller 5 and a non-contact position, that is, a position away from the measuring roller 5, during printing operation, as required. It is provided so that it can be selectively changed.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0080

[Correction method] Change

[Correction contents]

On the other hand, in the invention described in claims 19 to 27, the doctor roller 63 is provided so as to contact the peripheral surface of the measuring roller 5 during printing operation, and the rotation of the doctor roller 63 is changed from the measuring roller 5 to the peripheral surface of the measuring roller 5. The ink scraping rotation and the non-scraping rotation are provided so as to be selectively changeable.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 008

[Correction method] Change

[Correction contents]

On the other hand, when the printing or the printing image which is required to have higher quality exists only in a partial area in the axial direction of the plate cylinder 8, the printing is performed by the non-keyless ink supply. That is, as shown in FIGS. 10 to 27 , according to the embodiment (embodiment of FIGS. 9 to 15) corresponding to the invention described in claims 9 to 24, the first gap width adjusting means 14 causes the division adjusting plate 141. Is adjusted relative to the peripheral surface of the fountain roller 2, and the size of the first gap 13 between the tip of the division adjusting plate 141 and the peripheral surface of the fountain roller 2 is adjusted to the size of the plate image of the plate cylinder 8. The size of the plate cylinder 8 is set so that a desired amount of ink can be drawn out in accordance with the distribution state of each divided section in the axial direction.
Is separated from the peripheral surface of the measuring roller 5 or when the doctor means 6 cannot be separated from the peripheral surface of the measuring roller 5 by the doctor roller 63, the doctor roller 63
Selects to rotate without scraping ink from the peripheral surface of the measuring roller 5, and the printing operation is started.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of drawings]

1 is a perspective view schematically showing an embodiment (claims 1, 2 and 5) of an ink supply device according to the present invention,

FIG. 2 is an enlarged view including a partial cross-section of a part of the peripheral surface of an embodiment of the peripheral surface of the measuring roller in the ink supply device according to the present invention (claims 3, 12 and 21);

FIG. 3 is another embodiment of the peripheral surface of the measuring roller in the ink supply device according to the present invention (claims 4, 13 and 22).
An enlarged view including a partial cross section of a part of its peripheral surface,

FIG. 4 is an enlarged view showing an embodiment (claims 9, 18 and 27) of a peripheral surface of a concavo-convex roller in the ink supply device according to the present invention, including a partial cross section of a part of the peripheral surface;

5 is a side sectional view of FIG. 1, showing a keyless-dedicated embodiment (claims 1, 2 and 5) in which the doctor means is a doctor blade.

FIG. 6 is a side sectional view showing a keyless-dedicated embodiment (claims 1 and 6) in which the doctor means is a doctor bar in the ink supply device according to the present invention;

FIG. 7 is a side sectional view showing a keyless-dedicated embodiment (claims 1 and 7) in which the doctor means is a doctor roller in the ink supply device according to the present invention;

8 is an enlarged view of a main part including a partial cross section showing an example of a driving mechanism of the doctor roller shown in FIG. 7,

FIG. 9 is a side sectional view showing a keyless ink supply mode in an embodiment of a keyless non-keyless dual type in which a doctor means is a doctor blade in the ink supply device according to the present invention;

FIG. 10 is the embodiment of FIG. 9 (claims 10, 11 and 14);
Side sectional view showing a non-keyless ink supply mode in,

FIG. 11 is a side sectional view showing a keyless ink supply mode in an embodiment of a keyless non-keyless dual type in which a doctor means is a doctor bar in the ink supply device according to the present invention;

FIG. 12 is an embodiment of FIG. 11 (claims 10, 11 and 1);
5) is a side sectional view showing the non-keyless ink supply mode in FIG.

FIG. 13 is an embodiment of a keyless non-keyless dual type in which the doctor means is a doctor roller in the ink supply device according to the present invention (claims 10, 16, 19, 20 and 2).
5) A side sectional view showing the keyless ink supply mode in FIG.

14 is an embodiment of FIG. 13 (claims 10, 11 and 1);
6) is a side sectional view showing the non-keyless ink supply mode in 6),

FIG. 15 is a side sectional view showing a non-keyless ink supply mode in the embodiment shown in FIG. 13 (claims 19, 20, 23 and 24);

FIG. 16 is an embodiment (claims 10 and 1) of FIGS. 13 and 14;
1 and 16) the drive mechanism of the doctor roller,
An enlarged view of the main part including a partial cross section showing an example of a means for contacting and separating the doctor roller from the measuring roller,

FIG. 17 is an embodiment of FIG. 15 (claims 19, 20 and 2);
In 3), an example of turning on and off the transmission of power to the doctor roller in a mode in which the doctor roller is in contact with the measuring roller, that is, an embodiment in which the doctor roller rotates together with the rotation of the measuring roller when it is off. An enlarged view of the main part including a partial sectional view shown

FIG. 18 shows the embodiment of FIGS. 7, 13 and 15;
In the mode in which the doctor roller is in contact with the measuring roller, the rotation of the peripheral surface of the doctor roller is reversed at the contact position with respect to the rotation of the peripheral surface of the measuring roller. Enlarged view,

FIG. 19 shows an embodiment of FIGS. 7, 13 and 15;
Example of a drive mechanism capable of switching the rotation of the peripheral surface of the doctor roller in both forward and reverse directions at the contact position with respect to the rotation of the peripheral surface of the measurement roller in a mode in which the doctor roller is in contact with the measurement roller, and changing the rotation speed. An enlarged view of a main part including a partial cross section showing

FIG. 20 is a vertical cross-sectional view showing one embodiment of the first gap adjusting means provided in the ink fountain in the ink supply device according to the present invention;

FIG. 21 is a perspective view showing an embodiment of partition means for dividing an ink fountain and using a part of the ink fountain in the ink supply device according to the present invention;

[Explanation of symbols] 1 ink fountain 11 base 12 side plate 13 first gap (between the front edge of the base of the ink fountain and the peripheral surface of the fountain roller) 14 first gap adjusting means (Fig. 20) 141 multiple divisions Adjustment plate 142 Bottom plate 143 Push rod 144 Cam follower 145 End face cam 146 Compression spring 147 Transmission mechanism 148 Drive source 149 Operating knob 15 Partition means (Fig. 21) 151 Partition side plate 152 Partition side plate 153 Roller 3 Ink roller 2 Concavo-convex roller 31 Protrusion (Fig. 4) 32 Groove 33 Second gap 4 First intermediate roller 41 Second intermediate roller 5 Measuring roller 51 Dimple (cell) (Fig. 3) 52 Bank 53 Peripheral layer 54 Base material 55 Micro cavity (FIG. 2) 6 doctor means 61 doctor blade (FIG. 5) 611 blade 61 Blade holder 613 of the holder displacement axis 614 and away from arm 615 hydraulic cylinder 616 hydraulic cylinder support shaft 62 a doctor bar (6) 621 bar 622 backup stays 62 3 stay-end shaft 63 doctor roller (7) 631 contact and separation Eccentric sleeve (Fig. 16) 64 Doctor roller drive mechanism (Fig. 8) 641 Doctor roller side gear 642 Measuring roller side gear 643 Drive upstream transmission gear 644 Electromagnetic clutch 65 Doctor roller drive mechanism (Fig. 18) 651 Doctor roller side gear 652 Measuring roller side first gear 653 Measuring roller side second gear 654 Transmission gear 655 Intermediate gear 66 Doctor roller drive mechanism (Fig. 19) 661 Doctor roller side pulley 662 Belt tension Frame 10 ink cylinder of Nerijibane 7 wearing roller 8 edition cylinder 9 printing press of the pulley 663 driving source side of the pulley 664 driving source 665 transmission belt 666 belt tensioning

Claims (27)

[Claims] 1. A printing machine for supplying ink to a printing plate of a plate cylinder for printing, and a forming roller having a peripheral surface rotating in contact with the printing plate, and a peripheral part of an upstream side of the forming roller in supplying the ink. The peripheral surface rotates in contact with the surface, and the peripheral surface on the upstream side of the metering roller comes into contact with the peripheral surface of the measuring roller in which a large number of minute recesses for accommodating ink are evenly arranged on the peripheral surface. A second intermediate roller whose peripheral surface rotates, and a peripheral surface of the measuring roller on the downstream side of the contact position between the second intermediate roller and on the upstream side of the contact position between the wearing roller. An ink fountain composed of the contacted doctor means, the doctor means facing upward, the upper part and the front part opened, and the side plates and the inclined base, and the position for closing the front part of the ink fountain, and In front of the base of the ink fountain A peripheral surface is provided at a position close to the edge via a first gap, the peripheral surface is displaced downward to rotate, and a fountain roller is provided on the peripheral surface on the downstream side of the fountain roller in ink supply. That is closer to the peripheral surface on the upstream side of the first intermediate roller due to the rotation of the peripheral surface by a second gap that is narrower than that of A roller, the first intermediate roller that rotates in contact with the downstream peripheral surface of the concave-convex roller during ink supply, and the peripheral surface of the first intermediate roller and the second intermediate roller. An ink cylinder, which rotates in contact with both sides of the peripheral surface, and which is drawn out by the rotation of the fountain roller.
The ink having a thickness corresponding to the gap is supplied to the peripheral surface of the concave-convex roller while being pressed when passing through the second gap, and the peripheral surface of the concave-convex roller and the peripheral surface of the first intermediate roller. Pressure and splitting resulting from contact with the ink cylinder, pressure and splitting resulting from rotational contact at the contact points between both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller, and the peripheral surface of the ink cylinder. Extension in the axial direction of the peripheral surface resulting from rotation and reciprocating movement in the axial direction, and
Due to the compression and splitting caused by the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the metering roller, the fluidity is increased and the fluid is supplied to the peripheral surface of the metering roller. While scraping off with a doctor means and returning to the ink fountain, a full amount of ink is supplied to the printing plate of the plate cylinder through the peripheral surface of the application roller with a substantially uniform amount of ink at all positions along the axis of the measuring roller. Characteristic ink supply device. 2. A printing machine for supplying ink to a printing plate of a plate cylinder for printing, and a forming roller having a peripheral surface rotating in contact with the printing plate, and a peripheral part of the forming roller at an upstream side in supplying the ink. The peripheral surface rotates in contact with the surface, and the peripheral surface on the upstream side of the metering roller comes into contact with the peripheral surface of the measuring roller in which a large number of minute recesses for accommodating ink are evenly arranged on the peripheral surface. A second intermediate roller whose peripheral surface rotates, and a peripheral surface of the measuring roller on the downstream side of the contact position between the second intermediate roller and on the upstream side of the contact position between the wearing roller. An ink fountain composed of the contacted doctor means, the doctor means facing upward, the upper part and the front part opened, and the side plates and the inclined base, and the position for closing the front part of the ink fountain, and In front of the base of the ink fountain A peripheral surface is provided at a position close to the edge via a first gap, the peripheral surface is displaced downward to rotate, and a fountain roller is provided on the peripheral surface on the downstream side of the fountain roller in ink supply. That is closer to the peripheral surface on the upstream side of the first intermediate roller due to the rotation of the peripheral surface by a second gap that is narrower than that of A roller, the first intermediate roller that rotates in contact with the downstream peripheral surface of the concave-convex roller during ink supply, and the peripheral surface of the first intermediate roller and the second intermediate roller. An ink cylinder that rotates in contact with both of the peripheral surfaces and that reciprocates with a predetermined stroke in the axial direction. The first cylinder is drawn by the rotation of the fountain roller.
The ink having a thickness corresponding to the gap is supplied to the peripheral surface of the concave-convex roller while being pressed when passing through the second gap, and the peripheral surface of the concave-convex roller and the peripheral surface of the first intermediate roller. Pressure and splitting resulting from contact with the ink cylinder, pressure and splitting resulting from rotational contact at the contact points between both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller, and the peripheral surface of the ink cylinder. Extension in the axial direction of the peripheral surface resulting from rotation and reciprocating movement in the axial direction, and
Due to the compression and splitting caused by the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the metering roller, the fluidity is increased and the fluid is supplied to the peripheral surface of the metering roller. While scraping off with a doctor means and returning to the ink fountain, a full amount of ink is supplied to the printing plate of the plate cylinder through the peripheral surface of the application roller with a substantially uniform amount of ink at all positions along the axis of the measuring roller. Characteristic ink supply device. 3. The ink supply device according to claim 1, wherein the minute recesses of the measuring roller are recesses which are regularly provided on the peripheral surface. 4. The ink supply device according to claim 1, wherein the fine recesses of the measuring roller are hollows formed by evenly dispersing the outer peripheral layer and opening on the peripheral surface. 5. The ink supply device according to claim 1, wherein the doctor means is a doctor blade. 6. The ink supply device according to claim 1, wherein the doctor means is a doctor bar. 7. The ink supply device according to claim 1, wherein the doctor means is a doctor roller which rotates at a peripheral speed lower than that of the metering roller. 8. The ink supply device according to claim 1, wherein the doctor means is a doctor roller that rotates by being displaced in a direction opposite to the displacement of the peripheral surface of the measuring roller at the contact portion with the measuring roller. 9. The ink supply device according to claim 1, wherein the unevenness of the uneven roller is composed of a large number of regular projections whose periphery is divided by grooves. 10. A printing machine for supplying ink to a printing plate of a plate cylinder for printing, and a forming roller having a peripheral surface which rotates in contact with the printing plate, and a peripheral portion of an upstream side of the forming roller when supplying the ink. The peripheral surface rotates in contact with the surface, and the peripheral surface on the upstream side of the metering roller comes into contact with the peripheral surface of the measuring roller in which a large number of minute recesses for accommodating ink are evenly arranged on the peripheral surface. A second intermediate roller whose peripheral surface rotates, and a peripheral surface of the measuring roller on the downstream side of the contact position between the second intermediate roller and on the upstream side of the contact position between the wearing roller. Doctor means provided with means for selectively switching between a contact position and a position spaced from the peripheral surface, and a doctor base that faces the doctor upward, opens the upper and front parts, and tilts both side plates. Inn consisting of A peripheral surface is provided at a position that closes the front of the ink fountain and the ink fountain, and at a position that is close to the front edge of the base of the ink fountain with a first gap, and the peripheral surface is displaced downward and rotates. A fountain roller, a first gap adjusting means provided in the ink fountain for adjusting the first gap by dividing the first gap into divisions along the axial direction of the fountain roller, and the fountain roller for supplying ink. To the peripheral surface on the downstream side of the first intermediate roller via a second clearance narrower than the first clearance, and to contact the peripheral surface on the upstream side of the first intermediate roller to rotate the peripheral surface. A concave-convex roller in which irregularities are evenly arranged on the surface, the first intermediate roller that rotates in contact with the peripheral surface on the downstream side of the concave-convex roller during ink supply, and the first intermediate roller Perimeter and the second And an ink cylinder whose peripheral surface rotates by contacting with both peripheral surfaces of the intermediate roller, fully opening the first gap, and bringing the doctor means into contact with the peripheral surface of the measuring roller to rotate the fountain roller. The ink having a thickness corresponding to the fully opened first gap drawn out by is supplied to the peripheral surface of the concave-convex roller while being pressed while passing through the second gap, and at the same time as the peripheral surface of the concave-convex roller. From compression and split resulting from contact with the peripheral surface of the first intermediate roller, from rotational contact at the contact area between both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller and the peripheral surface of the ink cylinder. Due to the compression and splitting that occur and the compression and splitting that results from the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the metering roller, the fluidity is increased and is supplied to the peripheral surface of the metering roller. Further, the excess ink on the peripheral surface of the measuring roller is scraped off by the doctor means which is in contact with the peripheral surface of the measuring roller and returned to the ink fountain, while a substantially uniform amount of ink is applied at every position along the axis of the measuring roller. The entire ink supply to be supplied to the plate of the plate cylinder through the peripheral surface of the plate cylinder, and the first gap is adjusted to a required size for each divided section by the adjusting means, and the doctor means is set to the circumference of the measuring roller. The amount of ink separated from the surface and drawn by the rotation of the fountain roller from the ink fountain to the desired thickness for each section is the amount corresponding to the ink thickness for each section when passing through the second gap. While being supplied to the peripheral surface of the concave-convex roller, compression and splitting caused by contact between the peripheral surface of the concave-convex roller and the peripheral surface of the first intermediate roller, the first intermediate roller Of the ink cylinder and the peripheral surface of the second intermediate roller and the peripheral surface of the second intermediate roller, the compression and splitting caused by the rotational contact, and the peripheral surface of the ink cylinder in the axial direction. Of the second intermediate roller and the pressure and splitting due to the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller increases the fluidity and is supplied to the peripheral surface of the measuring roller. An ink supply device characterized in that it is possible to select either one of the ink supply that supplies the supplied ink to the printing plate of the plate cylinder through the peripheral surface of the forming roller, or both. 11. A printing machine for supplying ink to a plate of a plate cylinder for printing, and a forming roller having a peripheral surface which rotates in contact with the plate, and a peripheral portion of the forming roller at an upstream side in supplying the ink. The peripheral surface rotates in contact with the surface, and the peripheral surface on the upstream side of the metering roller comes into contact with the peripheral surface of the measuring roller in which a large number of minute recesses for accommodating ink are evenly arranged on the peripheral surface. A second intermediate roller whose peripheral surface rotates, and a peripheral surface of the measuring roller on the downstream side of the contact position between the second intermediate roller and on the upstream side of the contact position between the wearing roller. Doctor means provided with means for selectively switching between a contact position and a position spaced from the peripheral surface, and a doctor base that faces the doctor upward, opens the upper and front parts, and tilts both side plates. Inn consisting of A peripheral surface is provided at a position that closes the front of the ink fountain and the ink fountain, and at a position that is close to the front edge of the base of the ink fountain with a first gap, and the peripheral surface is displaced downward and rotates. A fountain roller, a first gap adjusting means provided in the ink fountain for adjusting the first gap by dividing the first gap into divisions along the axial direction of the fountain roller, and the fountain roller for supplying ink. To the peripheral surface on the downstream side of the first intermediate roller via a second clearance narrower than the first clearance, and to contact the peripheral surface on the upstream side of the first intermediate roller to rotate the peripheral surface. A concave-convex roller in which irregularities are evenly arranged on the surface, the first intermediate roller that rotates in contact with the peripheral surface on the downstream side of the concave-convex roller during ink supply, and the first intermediate roller Perimeter and the second And an ink cylinder that rotates in contact with both the peripheral surfaces of the intermediate roller and that reciprocates with a predetermined stroke in the axial direction, to fully open the first gap and to provide a doctor means. The ink, which has a thickness corresponding to the fully open first gap drawn by the rotation of the fountain roller, is brought into contact with the peripheral surface of the metering roller, and is pressed when passing through the second gap, and the circumference of the uneven roller is pressed. To the surface of the concave-convex roller and the peripheral surface of the first intermediate roller, resulting in pressure and splitting, both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller. Compression and split resulting from rotational contact at the contact surface with the peripheral surface of the ink cylinder, and axial extension of the peripheral surface resulting from rotational and axial reciprocating motion of the ink cylinder; and Due to the pressure and splitting caused by the contact between the peripheral surface of the intermediate roller and the peripheral surface of the measuring roller, the fluidity is increased and the fluid is supplied to the peripheral surface of the measuring roller. While being scraped back by the doctor means in contact with the peripheral surface and returned to the ink fountain, a substantially uniform amount of ink is supplied to the plate of the plate cylinder through the peripheral surface of the application roller at all positions along the axis of the measuring roller. The ink is supplied over the entire surface, and the first gap is adjusted to a required size for each divided section by the adjusting means, and the doctor means is separated from the peripheral surface of the measuring roller, and the fountain roller is rotated to separate the ink from the ink fountain. When the ink drawn out with the desired thickness for each section passes through the second gap, the uneven roller is the amount corresponding to the ink thickness for each section. While being supplied to the peripheral surface, compression and splitting caused by contact between the peripheral surface of the uneven roller and the peripheral surface of the first intermediate roller, both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller. And the circumferential surface of the second intermediate roller, and the compression and splitting caused by the rotational contact at the contact portion between the ink cylinder and the circumferential surface of the ink cylinder, and the circumferential surface axial extension caused by the rotational and axial reciprocating motion of the ink cylinder, and the circumferential surface of the second intermediate roller. Due to pressure and breakage due to contact with the peripheral surface of the measuring roller, the fluidity is increased and is supplied to the peripheral surface of the measuring roller, and the ink supplied to the peripheral surface of the measuring roller is applied to the plate through the peripheral surface of the application roller. An ink supply device characterized in that it is possible to select either one of the two types of ink supply to be supplied to the printing plate of the cylinder, either separately or separately. 12. The ink supply device according to claim 10, wherein the fine recesses of the measuring roller are recesses which are regularly provided on the peripheral surface. 13. The ink supply device according to claim 10, wherein the fine recesses of the measuring roller are hollows formed by evenly dispersing the outer periphery of the outer peripheral layer to open the peripheral surface. 14. The ink supply device according to claim 10, wherein the doctor means is a doctor blade. 15. The ink supply device according to claim 10, wherein the doctor means is a doctor bar. 16. The ink supply device according to claim 10, wherein the doctor means is a doctor roller that rotates at a peripheral speed lower than that of the metering roller. 17. The ink supply device according to claim 10, wherein the doctor means is a doctor roller which rotates by being displaced in a direction opposite to the displacement of the peripheral surface of the measuring roller at the contact portion with the measuring roller. 18. The concavo-convex pattern of the concavo-convex roller is composed of a large number of regular protrusions whose periphery is divided by grooves.
The ink supply device according to 1. 19. In a printing machine for supplying ink to a printing plate of a plate cylinder for printing, a forming roller having a peripheral surface rotating in contact with the printing plate, and a peripheral of an upstream side of the forming roller in supplying the ink. The peripheral surface rotates in contact with the surface, and the peripheral surface on the upstream side of the metering roller comes into contact with the peripheral surface of the measuring roller in which a large number of minute recesses for accommodating ink are evenly arranged on the peripheral surface. A second intermediate roller whose peripheral surface rotates, and a peripheral surface of the measuring roller on the downstream side of the contact position between the second intermediate roller and on the upstream side of the contact position between the wearing roller. The doctor roller provided with a means for selectively switching between rotation in which the ink comes in contact with and scrapes the ink from the peripheral surface of the measuring roller and rotation in which the ink is not scraped, and the doctor roller is faced upward, and the upper and front parts are opened. An ink fountain composed of both side plates and an inclined base, a position for closing the front part of the ink fountain, and a peripheral surface provided at a position close to the front edge of the base of the ink fountain via a first gap. A fountain roller whose peripheral surface is displaced downward and rotates, and a first gap which is provided in the ink fountain so that the first gap can be adjusted by dividing the first gap into divisions along the axial direction of the fountain roller. The adjusting means and the peripheral surface on the downstream side of the fountain roller in the ink supply are close to each other via the second clearance narrower than the first clearance, and on the peripheral surface on the upstream side of the first intermediate roller. The peripheral surface rotates in contact with the peripheral surface, and the concave-convex roller in which irregularities are evenly arranged on the peripheral surface, and the peripheral surface rotates in contact with the peripheral surface on the downstream side of the concave-convex roller during ink supply. An intermediate roller, and An ink cylinder that rotates in contact with both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller, and fully opens the first gap and weighs the doctor roller. When the ink is switched to rotate to scrape the ink from the peripheral surface of the roller, and when the ink having the thickness corresponding to the fully opened first gap drawn by the rotation of the fountain roller passes through the second gap. The pressure is applied to the peripheral surface of the concave-convex roller while being compressed, and the compression and splitting caused by the contact between the peripheral surface of the concave-convex roller and the peripheral surface of the first intermediate roller, the peripheral surface of the first intermediate roller and the second intermediate Whether compression and splitting caused by rotational contact at both the peripheral surface of the roller and the peripheral surface of the ink cylinder, and contact between the peripheral surface of the second intermediate roller and the peripheral surface of the metering roller. Due to the generated pressure and splitting, the fluidity increases and is supplied to the peripheral surface of the measuring roller. Furthermore, excess ink on the peripheral surface of the measuring roller is scraped off from the peripheral surface of the measuring roller by a rotating doctor roller. While supplying the ink to the ink fountain while supplying the ink to the printing plate of the plate cylinder through the peripheral surface of the forming roller at a substantially uniform amount of ink at all positions along the axis of the measuring roller, and the first gap. The adjustment means is used to narrow the adjustment to the required size for each divided section, and the doctor means is switched so as not to scrape the ink from the peripheral surface of the measuring roller, and the fountain roller is rotated to separate each section from the ink fountain. When the ink drawn to the desired thickness for the passage passes through the second gap, it is recessed by an amount corresponding to the ink thickness for each section. While being supplied to the peripheral surface of the roller, compression and splitting caused by contact between the peripheral surface of the uneven roller and the peripheral surface of the first intermediate roller, the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller. And the peripheral surface of the second intermediate roller due to compression and splitting caused by the rotational contact at the contact portion between both of them and the peripheral surface of the ink cylinder, and the peripheral surface axial extension caused by the rotational and axial reciprocating motion of the ink cylinder. A doctor roller that rotates and does not scrape ink from the metering roller on the circumference of the metering roller because the fluidity increases and is supplied to the circumference of the metering roller due to pressure and splitting caused by contact between the surface and the metering roller peripheral surface. By the application of external force of pressure and division by the peripheral surface of the ink, the fluidity is increased, and the ink is supplied to the printing plate of the plate cylinder through the peripheral surface of the forming roller. It is able to select one of the ink supply either from the side, the ink supply device according to claim. 20. In a printing machine for supplying ink to a printing plate of a plate cylinder for printing, a forming roller having a peripheral surface rotating in contact with the plate, and a peripheral of an upstream side of the forming roller in supplying the ink. The peripheral surface rotates in contact with the surface, and the peripheral surface on the upstream side of the metering roller comes into contact with the peripheral surface of the measuring roller in which a large number of minute recesses for accommodating ink are evenly arranged on the peripheral surface. A second intermediate roller whose peripheral surface rotates, and a peripheral surface of the measuring roller on the downstream side of the contact position between the second intermediate roller and on the upstream side of the contact position between the wearing roller. The doctor roller provided with a means for selectively switching between rotation in which the ink comes in contact with and scrapes the ink from the peripheral surface of the measuring roller and rotation in which the ink is not scraped, and the doctor roller is faced upward, and the upper and front parts are opened. An ink fountain composed of both side plates and an inclined base, a position for closing the front part of the ink fountain, and a peripheral surface provided at a position close to the front edge of the base of the ink fountain via a first gap. A fountain roller whose peripheral surface is displaced downward and rotates, and a first gap which is provided in the ink fountain so that the first gap can be adjusted by dividing the first gap into divisions along the axial direction of the fountain roller. The adjusting means and the peripheral surface on the downstream side of the fountain roller in the ink supply are close to each other via the second clearance narrower than the first clearance, and on the peripheral surface on the upstream side of the first intermediate roller. The peripheral surface rotates in contact with the peripheral surface, and the concave-convex roller in which irregularities are evenly arranged on the peripheral surface, and the peripheral surface rotates in contact with the peripheral surface on the downstream side of the concave-convex roller during ink supply. An intermediate roller, and An ink cylinder that rotates in contact with both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller, and that reciprocates with a predetermined stroke in the axial direction; In addition to fully opening the first gap, the doctor roller was switched to rotate to scrape the ink from the peripheral surface of the measuring roller, and had a thickness corresponding to the first gap in the full opening drawn by the rotation of the fountain roller. The ink is supplied to the peripheral surface of the uneven roller while being pressed when passing through the second gap, and the compression and the splitting caused by the contact between the peripheral surface of the uneven roller and the peripheral surface of the first intermediate roller, Squeezing and splitting resulting from rotational contact at the contact points between both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller and the peripheral surface of the ink cylinder, and inxylline. The fluidity is increased by the axial extension of the circumferential surface caused by the rotation and the axial reciprocating motion and the compression and splitting caused by the contact between the circumferential surface of the second intermediate roller and the circumferential surface of the metering roller. Is supplied to the peripheral surface of the measuring roller, and excess ink on the peripheral surface of the measuring roller is scraped off by the doctor roller that rotates to scrape the ink from the peripheral surface of the measuring roller and returned to the ink fountain, while the axis line of the measuring roller is Along the entire surface to supply a substantially uniform amount of ink to the printing plate of the plate cylinder through the peripheral surface of the forming roller, and the first gap is required for each divided section by the adjusting means. In addition to adjusting the size to a small size, the doctor means is switched to rotate without scraping the ink from the peripheral surface of the measuring roller, and the fountain roller is rotated to rotate the ink fountain. The ink drawn out in a desired thickness for each section is supplied to the peripheral surface of the uneven roller in an amount corresponding to the ink thickness for each section when passing through the second gap, and the uneven roller is also provided. And splitting caused by the contact between the peripheral surface of the first intermediate roller and the peripheral surface of the first intermediate roller, and the contact portion between both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller and the peripheral surface of the ink cylinder. And splitting caused by the rotational contact in the peripheral surface, the circumferential surface extending in the axial direction caused by the rotation and the axial reciprocating motion of the ink cylinder, and the compression due to the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller. By the splitting, the fluidity is increased and the fluid is supplied to the peripheral surface of the measuring roller, and the peripheral surface of the doctor roller that rotates without scraping the ink from the measuring roller is pressed and split by the peripheral surface of the measuring roller. It is possible to select either one of ink supply which increases fluidity by applying external force and supplies the ink to the plate of the plate cylinder through the peripheral surface of the application roller. Characteristic ink supply device. 21. The ink supply device according to claim 19, wherein the fine recesses of the measuring roller are formed as recesses regularly provided on the peripheral surface. 22. The ink supply device according to claim 19 or 20, wherein the fine concave portions of the measuring roller are hollows formed by uniformly dispersing the hollow portions in the outer peripheral layer and opening on the peripheral surface. 23. The ink supply device according to claim 19 or 20, wherein the rotation of the doctor roller that does not scrape the ink from the measuring roller is a rotating rotation accompanied by a contact frictional force with the measuring roller. 24. The rotation of the doctor roller that does not scrape the ink from the measuring roller is the same as the peripheral speed of the measuring roller, and the peripheral surface of the measuring roller is displaced at the contact portion with the measuring roller. The ink supply device according to claim 19 or 20, which is a driving rotation that is displaced and rotated in the same direction as. 25. The ink supply device according to claim 19, wherein the rotation of the doctor roller for scraping the ink from the measuring roller is a driving rotation at a peripheral speed lower than that of the measuring roller. 26. The rotation of the doctor roller for scraping the ink from the measuring roller is changed by the contact portion with the measuring roller.
The ink supply device according to claim 19 or 20, wherein the peripheral surface is driven and rotated so that the peripheral surface is displaced in a direction opposite to the displacement of the peripheral surface of the measuring roller to rotate. 27. The unevenness of the uneven roller is formed by a large number of regular projections whose periphery is divided by grooves.
The ink supply device according to item 0.