JP2864225B2 - Ink supply device - Google Patents

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 press, and more specifically, the present invention basically relates to a so-called keyless, that is, a measuring roller which does not require adjustment of an ink supply amount. Based on an ink supply device that can supply ink to the entire surface of the printing plate by making the thickness of the ink almost always uniform by using the keyless ink supply device, it is compatible with relatively high-viscosity ink. The present invention relates to a multi-function ink supply device capable of performing the above-mentioned operations.

[0002]

2. Description of the Related Art As shown in, for example, Japanese Patent Application Laid-Open No. 1-93397, a conventional keyless ink supply device is constructed by immersing a part of the peripheral surface of a fountain roller (also called an ink source roller) in ink in an ink pan. By rotating the roller, ink is drawn out above the peripheral surface of the roller, the ink is transferred to a downstream measuring roller, and excess ink is scraped off by a doctor blade abutting on 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 (recesses) provided on the entire peripheral surface of the measuring roller, whereby a substantially constant amount of ink remains, and the ink is supplied substantially uniformly over the entire plate surface. 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 to provide a comparatively high-viscosity ink which has been hardly adhered to a dent on the peripheral surface of a measuring roller because of its high viscosity. In the ink supply path before the ink reaches the depression on the peripheral surface of the measuring roller from the ink fountain, a facility is provided to temporarily change the high viscosity of the ink to fluidity,
An object of the present invention is to provide an ink supply device that can supply ink to a printing plate of a plate cylinder smoothly using a keyless ink supply device even with relatively high-viscosity ink.

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

A fourth object of the present invention is to use a relatively high-viscosity ink to operate in a keyless ink supply mode suitable for normal quality full uniform printing, and suitable for high quality partial printing. An object of the present invention is to provide a multi-function ink supply device that enables selective switching of 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 press for supplying ink to a printing plate of a plate cylinder and printing the printing plate. A measuring roller in which the peripheral surface rotates in contact with the peripheral surface on the upstream side of the application roller in supplying ink, and a number of fine concave portions for accommodating ink are uniformly arranged on the peripheral surface, A second intermediate roller in which the peripheral surface rotates by contacting the peripheral surface on the upstream side of the weighing roller; and a downstream position from a contact position with the second intermediate roller, and a contact position with the wearing roller. A doctor means in contact with the peripheral surface of the weighing roller on the upstream side, and an ink fountain consisting of a side plate and an inclined base, with the doctor means facing upward, the upper part and the front part being opened, The inkwell A peripheral surface is provided at a position to close the front portion and at a position close to the front edge of the base of the ink fountain via the first gap, and the peripheral surface at the position to close the front portion of the ink fountain is displaced downward. A fountain roller that rotates in the vicinity of the fountain roller at the downstream side of the fountain roller via a second gap narrower than the first gap in the supply of the ink, and an upstream side of the first intermediate roller. The peripheral surface is rotated in contact with the peripheral surface, the concave and 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 and convex roller in the supply of ink. First
And the peripheral surface rotates by contacting both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller, or the peripheral surface rotates and reciprocates with a predetermined stroke in the axial direction. Ink having a thickness corresponding to the first gap drawn out 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, and the peripheral surface of both the first intermediate roller and the second intermediate roller and the peripheral surface of the ink cylinder. and division pressure occurring at the contact portion between the surface from the circumferential rotation contact, or split and the compression resulting from the rotating contact or arising from the axial direction of reciprocation of the ink cylinder Due to the extension in the plane axis direction, and the compression and splitting resulting from the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller, the fluidity increases and is supplied to the peripheral surface of the measuring roller, While scraping excess ink on the peripheral surface of the measuring roller with a doctor means and returning it to the ink fountain,
The present invention is characterized in that a substantially uniform amount of ink is supplied to the printing plate of the plate cylinder through the peripheral surface of the applying roller at all positions along the axis of the measuring roller.

[0015] In the ink supply device described in the preceding paragraph, the fine concave portion of the measuring roller has a concave portion provided regularly on the peripheral surface or a hollow portion formed evenly in the outer peripheral layer and opened on the peripheral surface. The doctor means consists of a depression, and further, the doctor means is a doctor roller rotating at a lower peripheral speed than the doctor blade, the doctor bar, the measuring roller, or a contact portion with the measuring roller, and is displaced in a direction opposite to the displacement of the peripheral surface of the measuring roller. And rotate as a doctor roller. 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
2. Description of the Related Art In a printing press that supplies ink to a printing plate of a plate cylinder to perform printing, a contact roller that rotates in contact with the printing plate and a peripheral surface on an upstream side of the contact roller in supplying ink. A measuring roller in which the peripheral surface rotates, and a large number of fine concave portions that accommodate ink on the peripheral surface are evenly arranged;
A second intermediate roller whose peripheral surface rotates in contact with the peripheral surface on the upstream side of the measuring roller in the supply of the ink, and is located downstream from a contact position with the second intermediate roller;
And a doctor means having means for selectively switching between a position in contact with the peripheral surface of the measuring roller upstream of a contact position with the wearing roller and a position separated from the peripheral surface, and the doctor means Facing upward, opening the upper part and the front part, forming an ink fountain consisting of both side plates and an inclined base, a position for closing the front part of the ink fountain, and a front edge of the base of the ink fountain. A fountain roller provided with a peripheral surface at a position close to the fountain roller through a gap, and a peripheral surface at a position closing the front portion of the ink fountain being displaced downward and rotating; Means for adjusting a first gap provided in the ink fountain so as to be adjustable for each of the divided sections along the line, and a first narrower gap on the downstream peripheral surface of the fountain roller in the supply of ink than the first gap. Close through the gap, and the first
The roller is rotated by contact with the peripheral surface on the upstream side of the intermediate roller, and the irregular roller is evenly distributed on the peripheral surface. The first intermediate roller whose peripheral surface rotates and the peripheral surface rotates or rotates by contacting both 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.The first gap is fully opened, and the doctor means is brought into contact with the peripheral surface of the measuring roller, and the fully opened second cylinder is pulled out by the rotation of the fountain roller. The ink having a thickness corresponding to the first gap is supplied to the peripheral surface of the uneven roller while being pressed when passing through the second gap, and the ink is supplied to the peripheral surface of the uneven roller and the first intermediate roller. Compression and splitting resulting from contact with the peripheral surface of the roller, resulting from circumferential rotational contact at the contact 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 said rotational contact , or circumferential extension resulting from axial reciprocation of the ink cylinder, and the circumference of the second intermediate roller and the circumference of the metering roller. Compression and fragmentation resulting from contact with the surface
Fluidity increases and is supplied to the peripheral surface of the measuring roller,
The excess ink on the peripheral surface of the measuring roller is scraped by the doctor means that has come into contact with the peripheral surface of the measuring roller and returned to the ink fountain, while an approximately uniform amount of ink is applied at all positions along the axis of the measuring roller. The first gap is adjusted to the required size for each divided section by the adjusting means, and the doctor means is moved from the peripheral surface of the measuring roller to the printing plate of the plate cylinder via the surface. Separated and rotated by the fountain roller, the ink drawn out of the ink fountain at a desired thickness for each section, passes through the second gap, and the uneven roller has an amount corresponding to the thickness of the ink for each section when passing through the second gap. And splitting caused by the contact between the peripheral surface of the uneven roller and the peripheral surface of the first intermediate roller, and the peripheral surface of the first intermediate roller. Beauty division and the compression resulting from rotation contact at the contact portion between the peripheral surface of both the peripheral surface of the ink cylinder of the second intermediate roller, or split and the compression resulting from the rotating contact, or rotation and axial ink cylinder The fluidity increases due to the extension of the peripheral surface in the axial direction resulting from the reciprocating motion of the roller and the compression and splitting caused by the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller. And a piecewise ink supply for supplying the ink supplied to the peripheral surface of the measuring roller to the printing plate of the plate cylinder via the peripheral surface of the applying roller. It is a feature.

In the ink supply device described in the preceding paragraph, the fine concave portion of the measuring roller has a concave portion provided regularly on the peripheral surface, or a hollow portion formed evenly in the outer peripheral layer and opened on the peripheral surface. The doctor means consists of a depression, and further, the doctor means is a doctor roller rotating at a lower peripheral speed than the doctor blade, the doctor bar, the measuring roller, or a contact portion with the measuring roller, and is displaced in a direction opposite to the displacement of the peripheral surface of the measuring roller. And rotate as a doctor roller. In addition, the unevenness of the uneven roller is composed of a large number of regular projections having a circumferential surface separated by grooves.

Furthermore, the ink supply device according to the present invention is
2. Description of the Related Art In a printing press that supplies ink to a printing plate of a plate cylinder to perform printing, a contact roller that rotates in contact with the printing plate and a peripheral surface on an upstream side of the contact roller in supplying ink. A measuring roller in which the peripheral surface rotates, and a large number of fine concave portions that accommodate ink on the peripheral surface are evenly arranged;
A second intermediate roller whose peripheral surface rotates in contact with the peripheral surface on the upstream side of the measuring roller in the supply of the ink, and is located downstream from a contact position with the second intermediate roller;
And a means for contacting the peripheral surface of the measuring roller upstream of the contact position with the application roller and selectively switching between rotation for scraping ink from the peripheral surface of the measuring roller and rotation for not scraping ink. A doctor roller, an ink fountain having the doctor roller facing upward, an upper portion and a front portion being opened, and an ink fountain comprising both side plates and an inclined base, a position for closing the front portion of the ink fountain, and the ink fountain A peripheral surface is provided at a position close to the front edge of the base via the first gap,
A fountain roller whose peripheral surface at a position closing the front portion of the ink fountain is displaced downward and rotates; and an ink fountain which is capable of adjusting the first gap by dividing the first gap into divided sections along the axial direction of the fountain roller. A first gap adjusting means provided with a first gap which is close to a peripheral surface on the downstream side of the fountain roller through a second gap narrower than the first gap in ink supply; In contact with the peripheral surface on the upstream side of the roller, the peripheral surface rotates, and the uneven roller on which the irregularities are evenly distributed on the peripheral surface, and in the supply of ink, contacts the peripheral surface on the downstream side of the irregular roller. A first intermediate roller having a peripheral surface rotating;
An ink cylinder that rotates in contact with both the peripheral surface of the intermediate roller and the peripheral surface of the second intermediate roller, or that rotates and reciprocates with a predetermined stroke in the axial direction; While the first gap is fully opened, the doctor roller is switched to rotate so as to scrape ink from the peripheral surface of the measuring roller, and has a thickness corresponding to the fully opened first gap drawn out by the rotation of the fountain roller. Ink is supplied to the peripheral surface of the concave and convex roller while being compressed when passing through the second gap, and the compression and division resulting from the contact between the peripheral surface of the concave and convex roller and the peripheral surface of the first intermediate roller; Compression and splitting resulting from circumferential rotational contact at the contact 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 Alternatively, the rotating contact from occurring compression and division, or extension of the circumferential surface axial direction resulting from the axial direction of reciprocation of the ink cylinder, and the contact between the peripheral surface and the peripheral surface of the metering roller of the second intermediate roller Due to the pressure and splitting that occurs, 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 by a rotating doctor roller that scrapes the ink from the peripheral surface of the measuring roller. Removing the ink from the ink fountain and returning it to the ink fountain, while supplying a substantially uniform amount of ink at all positions along the axis of the measuring roller to the printing plate of the plate cylinder via the peripheral surface of the applying roller; The gap is adjusted to the required size for each divided section by the adjustment means, and the doctor means is rotated so as not to scrape ink from the peripheral surface of the measuring roller. When the ink drawn out from the ink fountain at a desired thickness for each section by the rotation of the fountain roller passes through the second gap, the uneven roller has an amount corresponding to the thickness of the ink for each section. Of the first intermediate roller and the peripheral surface of the second intermediate roller, which are supplied to the peripheral surface of the first intermediate roller. Compression and splitting resulting from rotational contact at the contact between the two and the circumference of the ink cylinder,
Or the compression and splitting resulting from said rolling contact , or
Fluidity increases due to the axial extension of the peripheral surface resulting from the rotation and the axial reciprocation of the ink cylinder, and the pressure and division caused by the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller. The ink is supplied to the peripheral surface of the measuring roller, and further increases the fluidity by applying an external force of pressure and division by the peripheral surface of the doctor roller that rotates so as not to scrape the ink from the measuring roller on the peripheral surface of the measuring roller. And either one of the two types of ink supply, which is supplied to the printing plate of the plate cylinder via the peripheral surface of the roller.

In the ink supply device described in the preceding paragraph, the fine concave portion of the measuring roller has a concave portion provided regularly on the peripheral surface, or a hollow portion formed uniformly in the outer peripheral layer and opened on the peripheral surface. The rotation of the doctor roller, which consists of a dent and does not scrape the ink from the peripheral surface of the measuring roller, is rotated by the contact frictional force with the measuring roller or at the same peripheral speed as the peripheral surface of the measuring roller. The rotation of the doctor roller, which scrapes ink from the peripheral surface of the measuring roller, is a drive rotation in which the peripheral surface is displaced and rotated in the same direction as the displacement of the peripheral surface of the measuring roller. Driving rotation at a low peripheral speed, or driving rotation that rotates in the direction opposite to the displacement of the peripheral surface of the measuring roller at the contact portion with the measuring roller, and Convex is composed of a regular number of projections separated around grooves.

[0020]

The operation of the present invention will be described below.

First, when ink having a high viscosity is put into the ink fountain, the fluidity is low even though the first gap is provided between the leading edge of the bottom 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.

Then, when the fountain roller is rotated in a direction in which the peripheral surface closing the open front portion of the ink fountain is displaced downward, the ink in the ink fountain touching this peripheral surface is removed from the peripheral surface of the fountain roller. Following the displacement of the peripheral surface of the fountain roller due to the viscosity attached to the ink, the ink is drawn out from the ink fountain while being rolled to a thickness that can pass through the first gap.

In this manner, the continuous rotation of the fountain roller causes the high-viscosity ink in the ink fountain to be drawn out sequentially while adhering to the peripheral surface of the fountain roller at a constant thickness. A second gap is reached between the peripheral surface and the concave / convex roller adjacent 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 uneven roller rotates in a direction in which the circumferential surface facing the circumferential surface of the fountain roller is displaced in the same direction as the circumferential surface of the fountain roller facing 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 irregular 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 peripheral surface of 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 measuring 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 2
The ink film is compressed and divided by adhering and dividing on the peripheral surface of the two rollers. These external forces acting on the ink further cause a temporary softening phenomenon in the ink and further temporarily increase the fluidity of the ink, so that the ink can be reliably and sufficiently supplied.

According to the second aspect of the present invention, the ink cylinder is provided with a means for causing the ink cylinder to reciprocate in a desired stroke in the axial direction in order to impart more fluidity to the high-viscosity ink. At both contact portions of 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 extends in the axial direction of the peripheral surface due to the axial swing of the ink cylinder, and the ink is stretched. It is.

The ink supplied from the second intermediate roller to the peripheral surface of the measuring roller via the ink cylinder is:
The rotation of the measuring roller is carried to the contact position with the doctor means, the excess amount of ink on the peripheral surface of the measuring roller is scraped off by the doctor means, and the scraped ink is opened at the lower part of the doctor means by opening its upper part. Collected in the provided ink fountain.

The doctor means includes an ink scraping type in which the contact portion with the peripheral surface of the measuring roller is invariable, such as a doctor blade and a doctor bar, and a contact portion with the peripheral surface of the measuring roller, such as a doctor roller. There is a variable type, that is, an ink scraping type in which the doctor roller is rotated so as to be displaced in a different direction from a peripheral surface speed lower than the peripheral surface speed of the measuring roller and / or an ink scraping type. Suitable for both ink scraping types.

In the preceding paragraph, when the latter, that is, the doctor means of the variable-rotation type ink scraping type is adopted, it is left on the peripheral surface of the measuring roller by utilizing the elastic fluid lubrication (elastohydrolubrication) phenomenon. It is possible to adjust the amount of ink, thereby changing the printing density of the entire printing surface.

The ink on the peripheral surface of the measuring roller, from which 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 contacts the peripheral surface of the forming roller via the contact position. The ink supplied and further supplied to the peripheral surface of the application roller reaches the contact position with the printing plate by the rotation of the application roller, and the ink is supplied with a substantially uniform thickness over the entire printing plate.

Immediately after that, the peripheral surface downstream of the setting roller after contact with the printing plate has a thickness of the residual ink between the portion where the ink is supplied to the image portion of the printing plate and the portion where the ink is not supplied. However, due to the subsequent rotation, by the same operation as described above, the ink is supplied from the peripheral surface of the measuring roller in such a manner that the difference in the thickness of the ink can be nullified, and the ink supply to the printing plate and the measuring roller are performed. The ink supply from the peripheral surface is continuously repeated.

The rollers provided downstream of the concave and convex rollers in the ink supply have substantially the same peripheral speed as the peripheral surface speed of the printing plate of the plate cylinder, and the peripheral speed of the two rollers in contact with each other. The surface is 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 tenth to thirteenth aspects and the nineteenth to twenty-seventh aspects of the invention, printing can be performed in a keyless ink supply mode when the entire surface of the printing plate needs to be uniformly supplied. On the other hand, in the case of printing that is wasteful, inconvenient, or unsuitable for keyless ink supply, printing can be performed by switching to a non-keyless ink supply mode.

That is, the invention according to claims 10 to 18 and the inventions according to claims 19 to 27 are characterized in that in the former, the doctor means comes into contact with the peripheral surface of the measuring roller, and in the latter, 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 measuring roller.
By fully opening the gap adjustment means
The same operation as the inventions described in the first to ninth aspects, that is, it is possible to always and substantially uniformly supply the ink to the entire surface of the printing plate as a keyless operation.

On the other hand, the inventions described in claims 10 to 18 and the inventions described in claims 19 to 27 are
Due to the separation of 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 rotation that scrapes ink from the peripheral surface of the measuring roller to rotation that does not scrape ink, and the excess ink is scraped. The first gap between the front edge of the base of the ink fountain and the peripheral surface of the fountain roller for each section divided along the axial direction of the fountain roller by the first gap adjusting means provided in the ink fountain. Is adjusted in accordance with the distribution of the image on the printing plate surface, and a necessary and sufficient amount of ink for each section can be supplied 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 and convex rollers for each section for the section where 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 defined as follows. Adjustment is made for each section by the first gap adjusting means so as to be smaller than the second gap between both peripheral surfaces of the fountain roller and the uneven roller.

In order to supply ink only to a limited division, an ink fountain is partitioned corresponding to the division and ink is stored only in the partition.

When the doctor roller is rotated so as not to scrape 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 to split it.

According to the eleventh and twentieth aspects of the present invention, in any one of the ink supply modes, similarly to the second aspect of the present invention, the first intermediate roller which contacts the peripheral surface of the ink cylinder is provided. At both contact portions of the surface and the peripheral surface of the second intermediate roller, the ink is axially swung in the ink cylinder, and the ink is extended and stretched in the axial direction of the peripheral surface.

[0041]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of an 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 between the inclined lower end of the base 11 and the peripheral surface of the fountain roller 2 (see FIG. 20)
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.

According to the first to ninth aspects of the present invention, the first gap 13 is constant as shown in the embodiments of FIGS. On the other hand, according to the invention described in claims 10 to 27, as shown in the embodiment 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. Can be adjusted widely or narrowly by the adjusting means 14.

As shown in FIG. 20, for example, the adjusting means 14 fixes the bottom plate 142 at an appropriate interval from the inclined upper surface of the base 11, and
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.

The moving mechanism includes a compression spring 146 for moving the split 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 of the ink fountain 1 is closed by the peripheral surface of the fountain roller 2 provided through the first gap 13 with respect to the inclined lower end of the base 11 as described above.

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

At the downstream side of the fountain roller 2 in the ink supply, a second space smaller than the first gap 13 is provided.
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 projections 31 are provided on the peripheral surface of the concave-convex roller 3 by dividing the periphery with grooves 32.
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).
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, and the rotation direction thereof is the first intermediate roller 4.
Is displaced and rotated in the same direction as the rotation direction of the respective peripheral surfaces of the uneven roller 3 and the ink cylinder 10 in contact therewith.

The ink cylinder 10 is provided on the downstream side of the concave / convex roller 3 in the ink supply via a first intermediate roller 4, and is provided between the peripheral surface of the upstream first intermediate roller 4 and the downstream second intermediate roller 41. A metal cylinder that has a peripheral surface in contact with both peripheral surfaces, the peripheral surface of which is generally coated with copper to improve ink wetting and ink reception.

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

In such a rotating situation, the ink cylinder 10 is mounted on its end shaft so as to reciprocate in a predetermined stroke in the axial direction by a known method, for example, Japanese Patent Publication No.
As shown in JP-A-7-15552, an oscillation mechanism (not shown) is provided in association with the ink cylinder 10, and the ink cylinder 10 associated with the oscillation mechanism reciprocates in the axial direction by its own rotation. The operation is set to reciprocate at a stroke of 10 to 50 mm per 20 rotations of the ink cylinder, for example.

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 its peripheral surface is measured with 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 provided at a position in contact with both the peripheral surface of the roller 5 and the contact position of the doctor means 6 with respect to the rotation of the measuring roller 5. The peripheral surface of the second intermediate roller 41 is provided on the peripheral surface on the upstream side, and on the peripheral surface on the downstream side of the contact position of the application roller 7. The rotation direction is
The peripheral surface of the second intermediate roller 41 is displaced and rotated in the same direction as the rotational direction of each peripheral surface of the ink cylinder 10 and the measuring roller 5 that comes into 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 are provided.
The peripheral surfaces of the application roller 7 are provided in contact with the printing plate of the plate cylinder 8 in sequence. Then, the second intermediate roller 41, the measuring roller 5, the wearing roller 7
Are rotated at a rotational peripheral speed substantially equal to the rotational peripheral speed of the plate cylinder.

Further, a fountain roller 2, an uneven roller 3, a first intermediate roller 4, an ink cylinder 1
0, the second intermediate roller 41, the weighing roller 5, and the wearing roller 7 rotate at their mutually opposing portions or at the mutually contacting portions, with the peripheral surfaces of both rollers displaced in the same direction,
The wear roller 7 is displaced in the same direction as the displacing direction of the printing plate at the contact portion with the printing plate.

The layout of the roller arrangement described above, 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 compressed and divided. The ink is applied twice, and by this repetition, the ink temporarily increases its fluidity due to the temporary softening phenomenon, and favorable conditions are set for the downstream supply.

The ink given fluidity in this way is further increased in fluidity by pressure and splitting due to rotational contact between the ink cylinder 10 and the second intermediate roller 41 downstream thereof, while the fluidity is further increased. Since the ink cylinder 10 swings (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
In the contact portion with both sides of the ink cylinder 10, a force is applied to the ink passing therethrough to extend the ink cylinder 10 in the axial direction, so that the ink is kneaded and spread in the axial direction of the ink cylinder 10 and is stretched thinly. With this, the fluidity is further increased.

When a supply device including the ink cylinder 10 and the first and second intermediate rollers 4 and 41 that are in contact with the peripheral surface of the ink cylinder 10 is used in a printing machine using dampening water. When the dampening water enters the above configuration, the dampening solution is compressed and divided by the contact between the cylinder and the roller, and extended in the axial direction by the oscillation (oscillation) operation of the ink cylinder 10 in the axial direction. At the same time as the thinning of the film progresses remarkably, the heat generated by the repetitive 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 solution, The invading water can be removed by evaporating.

At the stage before the high-viscosity ink drawn from the ink fountain 1 is supplied to the peripheral surface of the measuring roller 5, the ink which has been given a sufficient fluidity as described above is the first ink. The toner 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, on the peripheral surface of the measuring roller 5, a large number of fine concave portions capable of storing a predetermined amount of ink are uniformly arranged. These recesses are used for measuring rollers 5
Of microcavities 55 uniformly distributed in the base material 54 constituting the outer peripheral layer 53, that is, specifically, for example, the synthetic resin of the base material 54 has a diameter of 5 to 300
The outer peripheral layer 53 of the roller is formed by mixing and dispersing micro hollow bodies of about μm.

The base material 5 constituting such an outer peripheral layer 53
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 in which a fine hollow body is mixed and dispersed in the 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 on the peripheral surface of the measuring roller 5 may be formed by regularly arranged depressions (cells) 51 and banks 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 from the contact position with the intermediate roller 4 and upstream from the contact position with the wearing roller in the rotation direction of the measuring roller 5. The specific configuration is, for example, a 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 has 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.
2 is a bar 621 that contacts the peripheral surface of the measuring roller 5,
Backup stay 6 that suppresses bending deformation of the bar
22 and is supported by a frame (not shown).

Further, in FIG. 7, the doctor roller 63 comprises a doctor roller 63 which comes into contact with 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. Provide a suitable drive mechanism. 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 upstream side of the drive via the gear 642 on the measuring roller side attached to the end shaft of the measuring 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 attached to the end shaft of the measuring roller 5 by rotating the transmission gear 654 located on the upstream side of the driving. The second gear 653 on the measuring roller side and the intermediate gear 655 rotatably supported on the frame 9 by appropriate means, the gear 65 on the doctor roller side attached to the end shaft of the doctor roller 63.
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 has an independent doctor roller drive source 664 on the upstream side of the drive, and rotates the drive source 664 with a pulley 663 on the drive source side 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
The doctor roller 63 is transmitted to the doctor roller 63 via a transmission belt 665 wrapped around the roller 61, and the doctor roller 63 is rotated.

In the driving 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. Also, 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 surely 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 used.
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 shown in FIG. 19, the measuring roller 5 is driven by, for example, a driving mechanism linked to an opposite end shaft (not shown).

The application roller 7 is supplied with substantially uniform ink over the 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 the 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.

According to the tenth to twenty-seventh aspects of the present invention, the doctor means 6 may move the doctor means 6 between a position in contact with the measuring roller 5 and a non-contacting position, that is, a position distant from the measuring roller 5 as necessary during printing operation. To be selectively changeable.

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 provided on the frame so as to be angularly displaceable. And an attachment / separation arm 614 attached to at least one side of the holder displacement shaft 613, and a drive for bringing the blade 611 into or out of contact with the peripheral surface of the measuring roller 5 at the open end of the attachment / detachment arm 614. The output rod of a hydraulic cylinder 615, which is a source, is connected to the hydraulic cylinder 615, and the hydraulic cylinder 615 is attached to a frame (not shown) so as to be capable of angular displacement by a hydraulic cylinder support shaft 616. And a rotation displacement mechanism for coming into contact with and separating from the peripheral surface.

As shown in the embodiments 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 embodiments 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 on the frame 9 via the eccentric sleeve 631, and the eccentric sleeve 631 is used to connect the doctor roller 63 to the measuring roller 5. A 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 appropriate means, and the doctor roller 63 is brought into contact with the measuring roller 5 (FIG. 13).
And a position distant from the measuring roller 5 (FIG. 14). The driving mechanism for rotating the doctor roller 63 is, as shown in FIG.
4 (FIG. 8) or a drive mechanism 66 (FIG. 19) or 65 (FIG. 18).

On the other hand, according to the invention as set forth in claims 19 to 27, the doctor roller 63 is provided so as to be in contact with the peripheral surface of the measuring roller 5 during printing operation, and the rotation of the doctor roller 63 is controlled by the measuring roller 5 from the measuring roller 5. It is provided so as to be selectively changeable between rotation for scraping ink and rotation for not scraping ink.

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 lower than the rotation peripheral speed of the measuring roller 5, or the doctor roller 63 is rotated by the measuring roller. 5, at the contact portion with the rotation of the peripheral surface of the measuring roller 5 is displaced in a direction opposite to the displacement of the peripheral surface of the measuring roller 5,
The rotation of the doctor roller 63 that does not scrape is a rotation in which the doctor roller 63 is displaced 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
Is a rotation at which the rotational peripheral speed of the roller is substantially the same as the rotational peripheral speed of the measuring roller 5.

Next, as shown in FIG. 17, the mechanism for selectively changing the rotation of the doctor roller 63 as described above is the same as the driving mechanism 64 of FIG. An electromagnetic clutch 644 is provided between the doctor roller 63 and the doctor roller 63.
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 a driving mechanism 66 shown in FIG.
The drive mechanism 65 shown in FIG.

Further, in the drive mechanism 66 shown in FIG. 19, as mentioned earlier, the rotation of the doctor roller 63 is controlled by appropriately setting and switching the number of rotations of the drive source 664 per unit time. 5 can be changed to a rotation for scraping the ink and a rotation for not scraping the ink.

In each of the embodiments described above, when performing printing requiring normal print quality, that is, printing by keyless ink supply, as shown in FIGS. 5 to 7, the base 11 of the ink fountain 1 or the first The first distance between the split 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 printing or a print image requiring higher quality is present only in a part of the plate cylinder 8 in the axial direction, printing by non-keyless ink supply is performed. That is, as shown in FIGS. 10 to 27 , according to the embodiment corresponding to the invention described in claims 9 to 24 (the embodiment of FIGS. 9 to 15), the first gap width adjusting means 14 controls the division adjusting plate 141. Is adjusted with respect to the peripheral surface of the fountain roller 2, and the size of the first gap 13 between the tip of the split adjusting plate 141 and the peripheral surface of the fountain roller 2 is determined by changing the size of the printing plate image of the plate cylinder 8. In accordance with the distribution state of each division in the axial direction of the plate cylinder 8, the size is adjusted so that a desired amount of ink can be drawn out.
When the doctor roller 6 cannot be separated from the peripheral surface of the measuring roller 5 by the doctor roller 63,
Is selected so as to rotate so as not to scrape the ink from the peripheral surface of the measuring roller 5, and the printing operation is performed.

When printing is performed on a printing plate in which the print image exists 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 partitioning means 15 comprises 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 off 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]

The ink supply apparatus according to the present invention firstly provides a temporary softening phenomenon to the high-viscosity ink, that is, a mechanism for temporarily increasing the fluidity before the ink reaches the measuring roller from the ink fountain. That the high-viscosity ink was supplied smoothly and reliably to the plate surface of the plate cylinder by providing the ink supply path in an overlapping manner at
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 base of the ink fountain and the fountain roller, while riding on the peripheral surface of the fountain roller, downward, When the ink in the ink fountain is rolled to a thickness corresponding to the first gap and the ink in the ink fountain is drawn out, the initial temporary softening starts 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 circumferential surface of the uneven roller through the second gap narrower than the first gap, the circumferential speed rotation of the uneven roller is set faster than the circumferential speed rotation of the fountain roller to forcibly press the ink. And further promote temporary softening so as to easily adhere to the concave portion of the uneven roller, and further, contact between the uneven roller and the first intermediate roller, the first In the invention in which ink is repeatedly pressed and divided 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 is reciprocated at a predetermined stroke in the axial direction. In addition to the above, at the contact portion 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, the ink is supplied to the peripheral surface of the measuring roller through the process of giving the ink more fluidity, and the viscosity of the measuring roller is originally high due to its high viscosity. The ink, which was difficult to adhere to the dents on the peripheral surface, was made sufficiently fluid by the action of repeated external forces, and easily adhered to the dents on the peripheral surface of the measuring roller. Thus, 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 a way to sufficiently cope with the multifunctionality 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, in the case where a full-page uniform printing mode by keyless ink supply is desired as equipment corresponding to normal quality printing, the first gap adjusting means provided in the ink fountain is described in claims 1 to 9. In the invention of (1), it is unnecessary, and in the invention of claims (10) to (18), and in the invention of claims (19) to (27), while it is used fully open, it includes a doctor blade, a doctor bar, and a doctor roller. As for the switching of the doctor means, in the inventions according to the first to ninth aspects, the switching means is unnecessary, and the doctor means is brought into contact with the peripheral surface of the measuring roller, and the inventions according to the tenth to eighteenth aspects and the nineteenth aspect. Or 2
In the invention described in 7, the switching operation of the switching means causes the contact or, in the case of the doctor roller, to change the rotation of the doctor roller to the ink scraping rotation in addition to the contact,
In other words, this can be realized by switching to a rotation at a peripheral speed lower than the peripheral speed of the measuring roller, or a rotation at which the peripheral speed of the doctor roller is opposite to the peripheral surface of the measuring roller at the contact position. Now you can.

Next, when a partial print mode by non-keyless ink supply is desired as equipment corresponding to high-quality printing, that is, the invention according to claims 10 to 18 and the invention according to claims 19 to 27 In the present invention, the first gap adjusting means provided in the ink fountain is operated to adjust the gap 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 by a switching operation. Separation, or, in the case of a doctor roller, in addition to the separation, change the rotation of the doctor roller to rotation that does not scrape the ink, that is, at the contact portion with the measuring roller, the peripheral surface is oriented in the same direction as the peripheral surface of the measuring roller. It can be realized by switching to a rotation in which the rotational peripheral speed is displaced and the rotational peripheral speed is the same as the rotational 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 contacting the peripheral surface of the ink cylinder, wherein the ink supply device uses dampening water. When used in a printing press,
When dampening water flows back into the above mechanism, the dampening water is compressed and split from contact between the ink cylinder and the first and second intermediate rollers, and the ink cylinder is swung in the axial direction. (Oscillation) In the invention which operates, the axial extension by this operation causes the dampening solution to be made thinner remarkably, while the peripheral surface is rotated by the first and second intermediate rollers of the rubber layer. The heat generated by the repeated elastic deformation is transmitted to the dampening water, and the heat evaporates and removes the intruding water. Therefore, the above configuration is also effective in removing the invading dampening water.

[Brief description of the drawings]

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

FIG. 3 shows 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 the peripheral surface,

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

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

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

FIG. 7 is a side sectional view showing an embodiment (claims 1 and 7) of a keyless-only type in which 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 a keyless non-keyless dual-use type in which the doctor means is a doctor blade in the ink supply device according to the present invention (claims 10, 11 and 14);

FIG. 10 shows 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-use type in which doctor means is a doctor bar in the ink supply device according to the present invention (claims 10, 11 and 15);

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

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

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

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

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

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

[Description of Signs] 1 Ink fountain 11 Base 12 Side plate 13 First gap (between front edge of base of ink fountain and peripheral surface of fountain roller) 14 Means for adjusting first gap (FIG. 20) 141 Multiple divisions Adjusting plate 142 Bottom plate 143 Push rod 144 Cam follower 145 End cam 146 Compression spring 147 Transmission mechanism 148 Drive source 149 Operating knob 15 Partitioning means (FIG. 21) 151 Partitioning bottom plate 152 Partitioning side plate 153 Roller 16 Ink 2 Concavo-convex roller 31 Projection (FIG. 4) 32 Groove 33 Second gap 4 First intermediate roller 41 Second intermediate roller 5 Metering roller 51 Depression (cell) (FIG. 3) 52 Bank 53 Outer layer 54 Base material 55 Microcavity (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 gear 642 Measuring roller gear 643 Drive upstream drive gear 644 Electromagnetic clutch 65 Doctor roller drive mechanism (FIG. 18) 651 Gear on doctor roller side 652 First gear on measurement roller side 653 Second gear on measurement roller side 654 Transmission gear 655 Intermediate gear 66 Drive mechanism of doctor roller side (FIG. 19) 661 Pulley on doctor roller side 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

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-3-268945 (JP, A) JP-A-2-106350 (JP, A) JP-A-48-65005 (JP, A) JP-A-1- 228844 (JP, A) JP 5-24361 (JP, U) JP 5 26376 (JP, U) JP 4-11646 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) B41F 31/02-31/26

Claims (27)

(57) [Claims] 1. A printing press for supplying ink to a printing plate of a plate cylinder for printing, comprising: a forming roller having a peripheral surface rotating in contact with the printing plate; A measuring roller in which the peripheral surface rotates in contact with the surface, and a number of fine concave portions for accommodating ink are uniformly arranged on the peripheral surface, and a contact is made with the peripheral surface on the upstream side of the measuring roller in supplying ink. A second intermediate roller whose peripheral surface rotates, on the peripheral surface of the weighing roller on the downstream side of the contact position with the second intermediate roller, and on the upstream side of the contact position with the wearing roller. A doctor means in contact with the doctor means, facing the doctor means upward, opening the upper part and the front part, an ink fountain comprising both side plates and an inclined base, a 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, and the peripheral surface is displaced downward and rotates; and the first peripheral surface on the downstream side of the fountain roller in ink supply. The second surface is narrower than the second space, and the first surface is in contact with the upstream surface of the first intermediate roller, and the circumferential surface rotates, and the unevenness is evenly distributed on the circumferential surface. A roller, the first intermediate roller that rotates in contact with the peripheral surface on the downstream side of the concave-convex roller in the supply of ink, and the peripheral surface of the first intermediate roller and the second intermediate roller. An ink cylinder whose peripheral surface rotates by contacting both of the peripheral surfaces, wherein the first is drawn by rotation of the fountain roller
The ink having a thickness corresponding to the gap between the first roller and the second roller is supplied to the peripheral surface of the uneven roller while being pressed when passing through the second gap. and division pressure resulting from contact with, pressing the minute cracks resulting from rotating contact at the contact portion between the peripheral surface and the circumferential surface of both the peripheral surface of the ink cylinder of the second intermediate roller of the first intermediate roller, 及 beauty The pressure and splitting resulting from 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. While returning the ink fountain to the ink fountain with doctor means, applying an approximately equal amount of ink at all positions along the axis of the measuring roller to the printing plate of the plate cylinder through the peripheral surface of the roller, Especially Ink supply device. 2. A printing press for supplying ink to a printing plate of a plate cylinder for printing, comprising: a forming roller having a peripheral surface rotating in contact with the printing plate; A measuring roller in which the peripheral surface rotates in contact with the surface, and a number of fine concave portions for accommodating ink are uniformly arranged on the peripheral surface, and a contact is made with the peripheral surface on the upstream side of the measuring roller in supplying ink. A second intermediate roller whose peripheral surface rotates, on the peripheral surface of the weighing roller on the downstream side of the contact position with the second intermediate roller, and on the upstream side of the contact position with the wearing roller. A doctor means in contact with the doctor means, the doctor means facing upwards, the upper part and the front part are opened, the ink fountain composed of both side plates and the inclined base, a 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, and the peripheral surface is displaced downward and rotates; and the first peripheral surface on the downstream side of the fountain roller in ink supply. The second surface is narrower than the second space, and the first surface is in contact with the upstream surface of the first intermediate roller, and the circumferential surface rotates, and the unevenness is evenly distributed on the circumferential surface. A roller, the first intermediate roller that rotates in contact with the peripheral surface on the downstream side of the concave-convex roller in the supply of ink, 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 at a predetermined stroke in the axial direction, and wherein the first fountain roller pulled out by the rotation of the fountain roller
The ink having a thickness corresponding to the gap between the first roller and the second roller is supplied to the peripheral surface of the uneven roller while being pressed when passing through the second gap. Compression and splitting resulting from contact with the ink cylinder, pressure and splitting resulting from rotational contact at the contact 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, Extension in the peripheral axis direction resulting from rotation and axial reciprocation, and
Due to the compression and splitting resulting from the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller, the fluidity increases and the fluid is supplied to the peripheral surface of the measuring roller. The ink is scraped back by the doctor means and returned to the ink fountain, while a substantially uniform amount of ink is applied at all positions along the axis of the measuring roller, and the entire ink is supplied to the plate of the plate cylinder via the peripheral surface of the roller. Characteristic ink supply device. 3. The ink supply device according to claim 1, wherein the fine concave portion of the measuring roller comprises a regularly provided concave portion on the peripheral surface. 4. The ink supply device according to claim 1, wherein the fine concave portion of the measuring roller is a hollow portion formed by uniformly dispersing the outer peripheral layer and having a hollow portion opened 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 that rotates at a peripheral speed lower than that of the measuring roller. 8. The ink supply device according to claim 1, wherein the doctor means is a doctor roller which rotates in a direction opposite to the displacement of the peripheral surface of the measuring roller at a 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 separated by grooves. 10. A printing press for supplying ink to a printing plate of a plate cylinder for printing, wherein a forming roller having a peripheral surface rotating in contact with the printing plate, and a circumferentially upstream portion of the forming roller in supplying ink. A measuring roller in which the peripheral surface rotates in contact with the surface, and a number of fine concave portions for accommodating ink are uniformly arranged on the peripheral surface, and a contact is made with the peripheral surface on the upstream side of the measuring roller in supplying ink. A second intermediate roller whose peripheral surface rotates, on the peripheral surface of the weighing roller on the downstream side of the contact position with the second intermediate roller, and on the upstream side of the contact position with the wearing roller. A doctor means having means for selectively switching between a contact position and a position away from the peripheral surface, and a base inclined with the doctor means facing upward, the upper part and the front part being opened, and both side plates being inclined. Inn consisting of A fountain and a peripheral surface are provided at a position to close the front portion of the ink fountain and at a position close to the front edge of the base of the ink fountain via a first gap, and the peripheral surface is displaced downward and rotated. A fountain roller, a first gap adjusting means provided in the ink fountain so as to be capable of sorting the first gap for each divided section along the axial direction of the fountain roller and providing each of the first gaps to be adjustable. And a peripheral surface on the downstream side of the first intermediate roller is in contact with a peripheral surface on an upstream side of the first intermediate roller via a second clearance smaller than the first clearance, and the peripheral surface rotates. An uneven roller in which unevenness is evenly distributed on a surface; a first intermediate roller whose peripheral surface rotates by contacting a peripheral surface on a downstream side of the uneven roller in ink supply; Peripheral surface and the second An ink cylinder whose peripheral surface is rotated by contacting both peripheral surfaces of the intermediate roller, and wherein the first gap is fully opened, and the doctor means is brought into contact with the peripheral surface of the measuring roller, and the rotation of the fountain roller The drawn-out ink having a thickness corresponding to the fully opened first gap is supplied to the peripheral surface of the concave and convex roller while being pressed while passing through the second gap, and the ink is supplied to the peripheral surface of the concave and convex roller. Compression and splitting resulting from contact with the peripheral surface of the first intermediate roller, resulting from rotational contact at the contact point 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 The compression and splitting, and the compression and splitting resulting from the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller, increase the fluidity and supply the peripheral surface of the measuring roller, Furthermore, while the excess ink on the peripheral surface of the measuring roller is scraped by a doctor means brought into contact with the peripheral surface of the measuring roller and returned to the ink fountain, the ink is applied substantially uniformly at all positions along the axis of the measuring roller. And the first gap is adjusted to a required size for each divided section by the adjusting means, and the doctor means is rotated around the measuring roller by the adjusting means. The ink separated from the surface and pulled out of the ink fountain by the rotation of the fountain roller at a desired thickness for each section is passed by the second gap, in an amount corresponding to the thickness of the ink for each section. The compression and splitting, which is supplied to the peripheral surface of the uneven roller and is caused by the contact between the peripheral surface of the uneven roller and the peripheral surface of the first intermediate roller, the first intermediate roller Circumferential compression and partial crack resulting from rotating contact at the contact portion between the peripheral surface and the circumferential surface of both the peripheral surface of the ink cylinder of the second intermediate roller, 及 beauty, the second intermediate roller peripheral surface and the metering roller Due to the pressure and division caused by contact with the surface, the fluidity increases and the fluid is supplied to the peripheral surface of the measuring roller, and the ink supplied to the peripheral surface of the measuring roller is applied, and the printing plate of the plate cylinder passes through the peripheral surface of the roller. An ink supply device, wherein either one of the two types of ink supply can be selected. 11. A printing press for supplying ink to a printing plate of a plate cylinder for printing, comprising: a forming roller having a peripheral surface rotating in contact with the printing plate; A measuring roller in which the peripheral surface rotates in contact with the surface, and a number of fine concave portions for accommodating ink are uniformly arranged on the peripheral surface, and a contact is made with the peripheral surface on the upstream side of the measuring roller in supplying ink. A second intermediate roller whose peripheral surface rotates, on the peripheral surface of the weighing roller on the downstream side of the contact position with the second intermediate roller, and on the upstream side of the contact position with the wearing roller. A doctor means having means for selectively switching between a contact position and a position away from the peripheral surface, and a base inclined with the doctor means facing upward, the upper part and the front part being opened, and both side plates being inclined. Inn consisting of A fountain and a peripheral surface are provided at a position to close the front portion of the ink fountain and at a position close to the front edge of the base of the ink fountain via a first gap. A fountain roller, a first gap adjusting means provided in the ink fountain so as to be able to sort the first gap into divided sections along the axial direction of the fountain roller and to be respectively adjustable. And a peripheral surface on the downstream side of the first intermediate roller is in contact with a peripheral surface on an upstream side of the first intermediate roller via a second clearance smaller than the first clearance, and the peripheral surface rotates. An uneven roller in which unevenness is evenly distributed on a surface; a first intermediate roller whose peripheral surface rotates by contacting a peripheral surface on a downstream side of the uneven roller in ink supply; Peripheral surface and the second An ink cylinder that rotates in contact with both of the peripheral surfaces of the intermediate roller and that reciprocates with a predetermined stroke in the axial direction, wherein the first gap is fully opened, and doctor means is provided. The ink having a thickness corresponding to the first fully open gap drawn out by the rotation of the fountain roller is brought into contact with the peripheral surface of the weighing roller, and is pressed while passing through the second gap. Pressure and split resulting from the contact between the peripheral surface of the concave and convex roller and the peripheral surface of the first intermediate roller, with both the peripheral surface of the first intermediate roller and the peripheral surface of the second intermediate roller. The compression and splitting resulting from rotational contact at the contact with the circumferential surface of the ink cylinder, and the circumferential extension of the circumferential surface resulting from the rotation and axial reciprocation of the ink cylinder; The pressure and division resulting from the contact between the peripheral surface of the intermediate roller and the peripheral surface of the measuring roller increase the fluidity and supply the ink to the peripheral surface of the measuring roller. The ink is scraped off by the doctor means brought into contact with the peripheral surface and returned to the ink fountain, while a substantially uniform amount of ink is applied to the plate on the plate cylinder via the peripheral surface of the roller at every position along the axis of the measuring roller. The first gap is adjusted to a necessary size for each divided section by the adjusting means so as to be narrow to a required size, the doctor means is separated from the peripheral surface of the measuring roller, and the fountain roller is rotated from the ink fountain. When the ink drawn at a desired thickness for each section passes through the second gap, the uneven roller is provided in an amount corresponding to the thickness of the ink for each section. Compression and splitting, which are supplied to the peripheral surface and are 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 Compression and division resulting from rotational contact at the contact portion between the ink cylinder and the peripheral surface of the ink cylinder, and extension of the peripheral surface in the axial direction resulting from rotation and axial reciprocation of the ink cylinder, and the peripheral surface of the second intermediate roller. Due to the pressure and splitting due to the contact with the peripheral surface of the measuring roller, the fluidity increases 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 via the peripheral surface of the roller. An ink supply device, characterized in that either one of the two types of ink supply can be selected from: 12. The ink supply device according to claim 10, wherein the fine concave portion of the measuring roller is formed by a regularly provided concave portion on a peripheral surface. 13. The ink supply device according to claim 10, wherein the fine concave portion of the measuring roller is formed by a hollow portion formed in the outer peripheral layer so as to be uniformly dispersed and having a hollow opening on 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 which rotates at a peripheral speed lower than that of the measuring roller. 17. The ink supply apparatus according to claim 10, wherein the doctor means is a doctor roller which rotates in a direction opposite to the displacement of the peripheral surface of the measuring roller at a contact portion with the measuring roller. 18. The unevenness of the uneven roller is composed of a large number of regular projections whose periphery is separated by grooves.
2. The ink supply device according to 1. 19. A printing press for supplying ink to a printing plate of a plate cylinder for printing, comprising: a forming roller having a peripheral surface rotating in contact with the printing plate; A measuring roller in which the peripheral surface rotates in contact with the surface, and a number of fine concave portions for accommodating ink are uniformly arranged on the peripheral surface, and a contact is made with the peripheral surface on the upstream side of the measuring roller in supplying ink. A second intermediate roller whose peripheral surface rotates, on the peripheral surface of the weighing roller on the downstream side of the contact position with the second intermediate roller, and on the upstream side of the contact position with the wearing roller. A doctor roller equipped with a means for selectively switching between rotation that scrapes ink from the peripheral surface of the measuring roller and rotation that does not scrape, and that the doctor roller faces upward and the upper and front parts are opened. An ink fountain comprising both side plates and an inclined base, and a peripheral surface provided at a position for closing a front portion of the ink fountain and at a position close to the front edge of the base of the ink fountain via a first gap. A fountain roller having a circumferential surface displaced downward and rotating; and a first gap provided in the ink fountain provided in the ink fountain in such a manner that the first gap is divided into divided sections along the axial direction of the fountain roller and each of the first gap is adjustable. Adjusting means, in the supply of ink, close to the peripheral surface on the downstream side of the fountain roller via a second gap narrower than the first gap, and on the peripheral surface on the upstream side of the first intermediate roller. A first roller that rotates by contacting the peripheral surface thereof and rotating the peripheral surface of the concave and convex roller uniformly or unevenly disposed on the peripheral surface thereof; An intermediate roller; 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 measures the doctor roller. When the ink is switched so as to scrape the ink from the peripheral surface of the roller, and the ink having a thickness corresponding to the first gap in the fully opened state drawn out by the rotation of the fountain roller passes through the second gap, While being pressed, it is supplied to the peripheral surface of the concave and convex roller, and the compression and division resulting from the contact between the peripheral surface of the concave and convex roller and the peripheral surface of the first intermediate roller, the peripheral surface of the first intermediate roller and the second intermediate roller Compression and splitting resulting from rotational contact at the contact between both the peripheral surface of the roller and the peripheral surface of the ink cylinder, and whether the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the metering roller Due to the pressure and splitting that occurs, 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 a rotating doctor roller that scrapes ink from the peripheral surface of the measuring roller. And returning the ink to the ink fountain while supplying a substantially uniform amount of ink at all positions along the axis of the measuring roller to the plate of the plate cylinder through the peripheral surface of the roller. The doctor means is adjusted to the size required for each division by the adjustment means, and the doctor means is switched so as not to scrape the ink from the peripheral surface of the measuring roller. When the ink drawn out at the desired thickness passes through the second gap, the ink is recessed by an amount corresponding to the thickness of the ink for each section. Compression and splitting, which are supplied to the peripheral surface of the roller and are caused by the 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 both the compression and partial crack resulting from rotating contact at the contact portion between the peripheral surface of the ink cylinder, 及 beauty, by pressing a splitting due to contact with the peripheral surface and the peripheral surface of the metering roller of the second intermediate roller, the fluidity of the Is supplied to the peripheral surface of the measuring roller, and further increases the fluidity by applying pressure and external force of division by the peripheral surface of the doctor roller that rotates without scraping the ink from the measuring roller on the peripheral surface of the measuring roller, A piecewise ink supply that supplies the ink to the printing plate of the plate cylinder via the peripheral surface of the applying roller, and either one of the two types of ink supply can be selected. . 20. A printing press for supplying ink to a printing plate of a plate cylinder for printing, comprising: a forming roller whose peripheral surface rotates in contact with the printing plate; A measuring roller in which the peripheral surface rotates in contact with the surface, and a number of fine concave portions for accommodating ink are uniformly arranged on the peripheral surface, and a contact is made with the peripheral surface on the upstream side of the measuring roller in supplying ink. A second intermediate roller whose peripheral surface rotates, on the peripheral surface of the weighing roller on the downstream side of the contact position with the second intermediate roller, and on the upstream side of the contact position with the wearing roller. A doctor roller equipped with a means for selectively switching between rotation that scrapes ink from the peripheral surface of the measuring roller and rotation that does not scrape, and that the doctor roller faces upward and the upper and front parts are opened. An ink fountain consisting of both side plates and an inclined base, and a peripheral surface provided at a position for closing a front portion of the ink fountain and at a position close to a front edge of the base of the ink fountain via a first gap. A fountain roller having a circumferential surface displaced downward and rotating; and a first gap provided in the ink fountain so as to be adjustable in such a manner that the first gap is divided into divided sections along the axial direction of the fountain roller and each of the divided sections is adjustable. Adjusting means, in the supply of ink, close to the peripheral surface on the downstream side of the fountain roller via a second gap narrower than the first gap, and on the peripheral surface on the upstream side of the first intermediate roller. A first roller whose peripheral surface rotates in contact with the peripheral surface thereof, and whose peripheral surface is evenly distributed on the peripheral surface thereof; An intermediate roller; 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; While the first gap is fully opened, the doctor roller is switched to rotate so as to scrape ink from the peripheral surface of the measuring roller, and has a thickness corresponding to the fully opened first gap drawn out by the rotation of the fountain roller. Ink is supplied to the peripheral surface of the concave and convex roller while being compressed when passing through the second gap, and the compression and division resulting from the contact between the peripheral surface of the concave and convex roller and the peripheral surface of the first intermediate roller; Compression and splitting resulting from rotational contact at the contact 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; The fluidity is increased by the axial extension of the peripheral surface resulting from the rotation of the roller and the reciprocating motion in the axial direction, and the compression and splitting resulting from the contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller. Is supplied to the peripheral surface of the measuring roller, and the excess ink on the peripheral surface of the measuring roller is scraped by a doctor roller that rotates to scrape the ink from the peripheral surface of the measuring roller. A total amount of ink supplied to the printing plate of the plate cylinder through the peripheral surface of the applying roller at substantially every position along the roller, and the first gap required by the adjusting means for each divided section. Adjust the doctor device to a small size and switch the doctor means so that the ink does not scrape the ink from the circumference of the measuring roller. Ink drawn out at a desired thickness for each section is supplied to the peripheral surface of the uneven roller by an amount corresponding to the thickness of the ink for each section when passing through the second gap. Compression and splitting resulting from 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 Compression and splitting caused by the rotational contact in the ink cylinder, and circumferential extension caused by the rotation and axial reciprocation of the ink cylinder, and compression by contact between the peripheral surface of the second intermediate roller and the peripheral surface of the measuring roller. The pressure and division by the peripheral surface of the doctor roller that rotates without scraping the ink from the measuring roller on the peripheral surface of the measuring roller due to increased fluidity due to The fluidity is increased by the application of the external force, and the ink is supplied to the printing plate of the plate cylinder through the peripheral surface of the applying roller. Characteristic ink supply device. 21. The ink supply device according to claim 19, wherein the fine concave portion of the measuring roller comprises a regularly provided concave portion on a peripheral surface. 22. The ink supply device according to claim 19, wherein the fine concave portion of the measuring roller is formed by a hollow portion formed in the outer peripheral layer so as to be uniformly dispersed and having a hollow opening on the peripheral surface. 23. The ink supply device according to claim 19, wherein the rotation of the doctor roller that does not scrape the ink from the measuring roller is a co-rotational rotation caused by a contact friction force with the measuring roller. 24. The rotation of the doctor roller, which does not scrape ink from the measuring roller, is at the same peripheral speed as the peripheral speed of the measuring roller, and at the contact portion with the measuring roller, the peripheral surface is displaced by the peripheral surface of the measuring roller. 21. The ink supply device according to claim 19, wherein the rotation is a driving rotation that rotates while being displaced in the same direction as that of the ink supply device. 25. The ink supply device according to claim 19, wherein rotation of the doctor roller for scraping ink from the measuring roller is driving rotation at a peripheral speed lower than that of the measuring roller. 26. A doctor roller, which scrapes ink from the measuring roller, rotates at a contact portion with the measuring roller.
21. The ink supply device according to claim 19, wherein the peripheral surface is a drive rotation that rotates while being displaced in a direction opposite to the displacement of the peripheral surface of the measuring roller. 27. The projections and depressions of the projections and depressions roller, wherein the projections and depressions are composed of a large number of regular projections whose periphery is separated by grooves.
The ink supply device according to 0.