JPH11105241A - Printing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a highly accurate recording of an image by a method wherein the lowering of the absolute positional accuracy between an image recording device and a plate cylinder, on which a printing plate is installed, due to vibration is prevented from occurring. SOLUTION: A first and a second plate cylinders 11 and 12, a second plate cylinder transferring mechanism or an image recording device 25 and the like are directly or indirectly supported by a frame 483. Further, at the lower end part of the frame 483 or between this frame 483 and a floor surface 482, on which a printing device is installed, three vibration-isolating members 485 are arranged. These vibration isolating members function as a vibration isolating means corresponding to the natural frequency of the whole printing device, resulting in making it possible to prevent the vibration outside the printing device from transmitting by means of these vibration-isolating members 485.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for printing an image on a printing plate by recording and developing an image, and then supplying ink to the printing plate for printing.

[0002]

2. Description of the Related Art In a conventional general printing apparatus, a printing plate is prepared by bringing a film on which a black and white binary image is recorded into close contact with a printing plate in a plate making process and exposing the printing plate. The printing process was performed after being mounted on the apparatus.

On the other hand, in recent years, there has been proposed a printing apparatus generally referred to as a digital printing machine, which can perform such a plate making process and a printing process with one device.
This digital printing press employs a “computer to plate” system in which an image is formed on a printing plate by directly scanning and exposing the printing plate with a laser beam or the like modulated based on an image signal.

Such a printing apparatus is disclosed in, for example,
As described in JP-A-141821, JP-A-9-123402 or JP-A-9-131855, a cylinder that holds and rotates a printing plate, and an image is printed on the printing plate held by the cylinder. An image recording device for recording, a plate cylinder for printing with a printing plate mounted thereon, an ink supply device and a dampening solution supply device for supplying ink and water to the printing plate mounted on the plate cylinder, and a printing plate And a supply and discharge device for printing paper.

[0005]

Generally, in an image recording apparatus for recording an image on a printing plate, the image recording apparatus itself must have a vibration-proof structure in order to maintain high image recording accuracy. . At this time, as described above, in the printing apparatus that performs the plate making process on the plate cylinder, even if only the image recording apparatus has a vibration-proof structure, the printing apparatus itself including the plate cylinder vibrates, If the absolute positional relationship between the printing plate held on the plate cylinder and the image recording device cannot be maintained with high accuracy, it is impossible to execute image recording accuracy with high accuracy.

The present applicant is also concerned with a printing apparatus for recording an image on a printing plate, making a plate, and then supplying ink to the printing plate to perform printing, wherein the plate cylinder holds the printing plate on its outer periphery. An image recording apparatus for recording an image on a printing plate held by a plate cylinder, and a printing position for printing the plate cylinder with an image recording position facing the image recording device and a printing plate held by the plate cylinder. (Japanese Patent Application No. 9-95023). According to this printing device, the image recording device and the like used in the plate making process of the printing plate and the ink supply device and the like used in the printing process can be arranged at different positions that do not interfere with each other. In addition, it is easy to secure a space for arranging these components, and it is possible to improve the degree of freedom of arrangement. In a printing apparatus of the plate cylinder moving type provided with such a plate cylinder moving mechanism, the image recording apparatus by vibration is used in a state where the plate cylinder reciprocating between the image recording position and the printing position is moved to the image recording position. It is necessary to prevent the deterioration of the image recording accuracy due to the deterioration of the absolute position accuracy between the plate cylinder and the plate cylinder.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and prevents the deterioration of the absolute positional accuracy between an image recording apparatus and a plate cylinder on which a printing plate is mounted due to vibration, thereby recording an image with high accuracy. It is an object of the present invention to provide a printing apparatus that can perform the printing.

[0008]

According to the first aspect of the present invention, there is provided a printing apparatus for printing an image by recording an image on the printing plate, supplying the ink to the printing plate, and performing printing. A plate cylinder holding an outer peripheral portion thereof, an image recording device for recording an image on a printing plate held by the plate cylinder, a plate making section for making a printing plate, and a plate making section held by the plate cylinder. A printing unit that performs printing using the prepressed printing plate, a frame unit that supports the plate making unit and the printing unit, and a printing unit installed between the installation floor and the frame unit. And a vibration isolating means for preventing vibration of the entire printing apparatus.

According to a second aspect of the present invention, there is provided a printing apparatus for printing an image by recording an image on the printing plate, making a plate, and then supplying ink to the printing plate to perform printing. A plate cylinder, an image recording device that records an image on a printing plate held by the plate cylinder, an image recording position facing the plate cylinder, and a printing plate held by the plate cylinder. Cylinder moving mechanism that moves between a printing position where printing is performed by the printer, a frame portion that directly or indirectly supports the plate cylinder, the image recording device, and the plate cylinder moving mechanism, and an installation floor on which the printing device is installed. And a vibration isolator provided between the surface and the frame for preventing vibration of the entire printing apparatus.

According to a third aspect of the present invention, there is provided a printing apparatus for printing an image by recording an image on the printing plate, making a plate, and then supplying ink to the printing plate for printing. First and second plate cylinders, a single image recording device for recording an image on a printing plate held by the first and second plate cylinders, and the first plate cylinder, A first moving position between an image recording position facing the image recording device and a first printing position where printing is performed by the printing plate held on the first plate cylinder;
And a second printing cylinder moving mechanism for moving the second printing cylinder between the image recording position and a second printing position at which printing is performed by the printing plate held by the second printing cylinder. Cylinder mechanism, a frame section for directly or indirectly supporting the plate cylinder, the image recording device, and the first and second plate cylinder movement mechanisms, an installation floor for installing a printing apparatus, and the frame section. And a vibration isolator for preventing vibration of the entire printing apparatus.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view of a printing apparatus according to the present invention.

The printing apparatus includes first and second plate cylinders 11,
After recording an image on a printing plate having no image recorded on the plate 12 and making a plate, the ink supplied to the printing plate is applied to the impression cylinder 15 via the first and second blanket cylinders 13 and 14. The printing is performed by transferring the image to the held printing paper.

This printing apparatus includes a first plate cylinder 11 movable between a first printing position shown by a solid line in FIG. 1 and an image recording position shown by a two-dot chain line, and a first printing cylinder 11 shown by a solid line in FIG. And a second plate cylinder 12 movable between the second printing position and the image recording position.

The first plate cylinder 11 moved to the first printing position
Around the printing plate, an ink supply device 20a for supplying black (K) ink to the printing plate, an ink supply device 20b for supplying magenta (M) ink to the printing plate, and a printing plate. The dampening water supply devices 21a and 21b for supplying dampening water are arranged. Further, around the second plate cylinder 12 moved to the second printing position, an ink supply device 20c for supplying, for example, cyan (C) ink to the printing plate, and a yellow (Y) ink to the printing plate, for example.
An ink supply device 20 d for supplying the ink of the present invention, a dampening solution supply device 21 c for supplying a dampening solution to the printing plate,
21d. Further, around the first plate cylinder 11 or the second plate cylinder 12 that has moved to the image recording position, a plate feeding unit 23, a plate discharging unit 24, and an image recording device 25 are provided.
And a developing device 26 are disposed.

According to this printing apparatus, the image recording device 25 and the developing device 2 used in the plate making process of the printing plate are used.
6 and the ink supply device 20 and the dampening solution supply device 21 used in the printing process can be arranged at different positions that do not interfere with each other, so that the degree of freedom of the arrangement relationship can be improved. it can. Further, since the image can be recorded on the printing plate held by the first and second plate cylinders 11 and 12 using the single image recording device 25, the device can be simplified, and the device can be simplified. The overall price can be lowered.

The printing apparatus includes a first blanket cylinder 13 provided to be able to contact the first plate cylinder 11 and a second blanket cylinder provided to be able to contact the second plate cylinder 12. The impression cylinder 1 provided so as to be able to contact the cylinder 14 and the first and second blanket cylinders 13 and 14 at different positions.
5, a paper feed cylinder 16 for passing the print paper supplied from the paper feed unit 27 to the impression cylinder 15, and a chain 1 for discharging the printed print paper received from the impression cylinder 15 to the paper discharge unit 28.
9 and a blanket cleaning device 29
And

The first and second plate cylinders 11 and 12 are connected to first and second plate cylinder moving mechanisms 31 and 32, respectively, which will be described later. 31,3
By the drive of No. 2, it reciprocates between the above-described first or second printing position and the image recording position.

Further, as will be described later, gears 51 arranged coaxially with the first and second plate cylinders 11 are provided on the sides of the first and second plate cylinders 11, respectively. A gear 52 is provided on the side of the first and second blanket cylinders 13 and 14, respectively, and is coaxially arranged with the first and second blanket cylinders 13 and 14. Then, when the first plate cylinder 11 moves to the first printing position, the first plate cylinder 1
A gear 51 attached to the first blanket cylinder 13 and a gear 52 attached to the first blanket cylinder 13 are configured to mesh with each other. Similarly, when the second plate cylinder 12 moves to the second printing position, the gear 51 attached to the second plate cylinder 12 and the gear 52 attached to the second blanket cylinder 14
Are configured to mesh with each other.

For this reason, the first plate cylinder 11 rotates in synchronization with the first blanket cylinder 13 at the first printing position. Similarly, the second plate cylinder 12 rotates synchronously with the second blanket cylinder 14 at the second printing position.

Further, a traction type plate cylinder rotating mechanism 30, which will be described later, is disposed near the image recording position, and both the first and second plate cylinders 11 and 12 move to the image recording position. In this state, the plate cylinder rotating mechanism 30
It rotates by the drive of.

FIG. 2 is a front view of the first and second plate cylinder moving mechanisms 31 and 32, and FIG. 3 is a side sectional view showing the vicinity of the bearing portion 33 in the first plate cylinder moving mechanism 31. . Since the first and second plate cylinder moving mechanisms 31 and 32 have the same configuration which is symmetrical to each other, the members common to the first and second plate cylinder moving mechanisms 31 and 32 are the same. Are given.

The first and second plate cylinder moving mechanisms 31 and 32
In order to move a bearing portion 33 including a pair of bearings 34 for supporting the support shafts 36 of the first and second plate cylinders 11 and 12, a slot 38 formed in a side plate 37 is provided (see FIG. 2, only the slot 38 is shown, and the side plate 37 is not shown.) The bearing 33 is connected to a slide holder 41 that can move along a guide member 39. The slide holder 41 is provided with a nut 42. The nut 42 is screwed with a ball screw 44 connected to a drive shaft of the motor 35.

For this reason, the first plate cylinder 11 is provided with a motor 35
Is movable together with the slide holder 41. The first plate cylinder 11 is provided with a guide member 39.
Along with the ball screw 44, a solid line in FIG.
Further, a first printing position indicated by a two-dot chain line in FIG.
It moves between an image recording position indicated by a two-dot chain line in FIG. 1 and a solid line in FIG. Similarly, the second plate cylinder 12 is driven by the motor 35 to move the slide holder 41.
It can be moved with. And the second plate cylinder 1
2 along the guide member 39 and the ball screw 44,
A second printing position indicated by a solid line in FIGS. 1 and 2,
It moves between an image recording position indicated by a two-dot chain line in FIG. 1 and a solid line in FIG.

A fixing member 43 for fixing the bearing 33 is provided near the first and second printing positions on the side plate 37. The first plate cylinder 11 is positioned and fixed at the first printing position by the fixing member 43, and the second plate cylinder 12 is positioned and fixed at the second printing position by the fixing member 43.

The first and second plate cylinders 11 and 12 respectively have
First and second plate cylinder moving mechanisms 31 and 32 for the first and second plates
When the first and second plate cylinders 1 and 12 are moved,
A rotation preventing mechanism, described later, for preventing rotation of the first and second motors 12 is provided.

The rotation of the first and second plate cylinders 11 and 12 is prevented by using the rotation preventing mechanism for the following reason. In other words, when the rotational positional relationship between the first and second plate cylinders 11 and 12 and the first and second blanket cylinders 13 and 14 and other members is deviated, the positional deviation of printing and the part This positional relationship needs to be constant at all times because a problem of collision occurs. At this time, at the image recording position, when recording an image on the printing plate held by the first and second plate cylinders 11 and 12 by the image recording device 25 described later, the first and second plates are used. The rotation angle positions of the trunks 11 and 12 are monitored by a photocoupler 87 and a rotary encoder, which will be described later. However, when moving from the image recording position to the first and second printing positions, the first and second plate cylinders 11 and 12 rotate, and the first and second plate cylinders 1 and 2 are rotated.
In some cases, the rotational positional relationship between the first and second blanket cylinders 13 and 14 and the like may be shifted. Therefore, the first and second plate cylinders 1 are rotated by using the rotation preventing mechanism.
First and second plate cylinders 11 and 12 when the first and second plates 12 and 12 move.
It prevents rotation of.

The anti-rotation mechanism comprises a first and a second plate cylinder 1.
A disk-shaped rotary plate 46 connected to the first and second support shafts 36 and having a cutout in a part of the outer periphery thereof, and the rotation of the rotary plate 46 is regulated by engaging with the cutout of the rotary plate 46. A rotation preventing member 47 and a releasing member disposed near the first and second printing positions for releasing the engagement of the rotation preventing member 47 with the notch of the rotating plate 46 at the first and second printing positions. 48, and a release member 49 disposed near the image recording position to release the engagement of the rotation preventing member 47 with the notch of the rotary plate 46 at the image recording position.

FIG. 4 shows the rotation preventing member 47 provided on the first plate cylinder 11 and the releasing member 4 provided at the first printing position.
FIG. 8 is a schematic diagram showing a relationship with the reference numeral 8. This rotation preventing member 47
Are a lever 54 swingable about a shaft 53 provided in the bearing portion 33, an engaging pin 55 erected on the front side of the lever 54, and a back surface of the engaging pin 55 with respect to the lever 54. The guide pin 56 erected on the side and the guide pin 5
6 and a spring 58 for urging the engaging pin 55 in the direction of the rotating plate 46 by swinging the lever 54. On the other hand, the release member 48
It is composed of a cam member having an inclined surface 59 for guiding the guide pin 56.

The second plate cylinder 12 is also provided with the same rotation preventing member 47 as described above, and the second printing position is also provided with the same release member 48 as above.

FIG. 7 is a schematic diagram showing the relationship between the rotation preventing member 47 and the release member 49 disposed at the image recording position when the first plate cylinder 11 has moved to the image recording position. The release member 49 is provided on the pressing pin 5 of the rotation preventing member 47 of the first plate cylinder 11 moved to the image recording position.
There is provided a pressing plate 62 which is reciprocated by an air cylinder 61 for pressing the lower side 7.

When the second plate cylinder 12 moves to the image recording position, the pressing pin 57 of the rotation preventing member 47 disposed on the second plate cylinder 12 is pressed by the pressing plate 62 of the release member 49. Pressed.

FIG. 8 is a front view showing the vicinity of the above-described plate cylinder rotating mechanism 30, and FIG. 9 is a side sectional view showing a main part thereof.
The plate cylinder rotating mechanism 30 is provided with a first,
For rotating the second plate cylinders 11 and 12,
The first and second plate cylinders 11 and 12 are provided on the opposite side of the above-described rotation preventing mechanism. In FIG. 9, the transmission rotor 78 and its moving mechanism are not shown.

The plate cylinder rotating mechanism 30 is connected to a driving roller 76 which is rotated by the drive of a motor 75 and a support shaft 36 of the first plate cylinder 11 or the second plate cylinder 12 to thereby form the first plate cylinder. First and second driven rollers 77 arranged concentrically with the cylinder 11 or the second plate cylinder 12, and a drive roller 76 concentrically arranged with the first plate cylinder 11 or the second plate cylinder 12. And a transmission roller 78 for transmitting drive to one of the first and second driven rollers 77 (hereinafter simply referred to as “driven roller 77”).

The lower end of the drive roller 76 is
9 is immersed in the oil stored therein. Further, as described above, the driven roller 77 is concentric with the first plate cylinder 11 or the second plate cylinder 12 through the support shaft 36 of the first plate cylinder 11 or the second plate cylinder 12. The first printing drum 11 and the second printing drum 12 rotate in synchronization with each other. Further, the transmission roller 78 is rotatably supported by a distal end of a cylinder rod of an air cylinder 80 whose base end is swingably connected to a support member 91 via a shaft 92. Accordingly, it is possible to move between a drive transmitting position in which both the driving roller 76 and the driven roller 77 are brought into pressure contact with each other and a retracted position separated from the surfaces of the driving roller 76 and the driven roller 77.

For this reason, by moving the transmission roller 78 to the drive transmission position and rotating the drive roller 76 at a constant speed by driving the motor 75 in a state, the rotation of the drive roller 76 is transmitted via the transmission roller 78. Driven roller 7
7, the first plate cylinder 11 rotates at a constant speed.
At this time, the driving force of the motor 75 is
Is transmitted to the first plate cylinder 11 or the second plate cylinder 12 by a traction-type drive transmission mechanism utilizing the frictional force between the roller and the driven roller 77 and the transmission roller 78. Alternatively, the second plate cylinder 12 can be accurately rotated without causing rotation unevenness.

At this time, in particular, in the above-described embodiment, since the transmission roller 78 can move between the drive transmission position where it is pressed against both the driving roller 76 and the driven roller 77 and the retracted position. After the first and second plate cylinders 11 and 12 have moved to the image recording position,
8 is brought into pressure contact with both the driving roller 76 and the driven roller 77 so that the transmission roller 78, the driving roller 76 and the driven roller 77 do not slip, and
The second plate cylinders 11 and 12 can be accurately rotated.

Accordingly, as in the printing apparatus according to this embodiment, the movement of the first and second plate cylinders 11 and 12 between the image recording position and the first and second printing positions causes Even when the driven roller 77 has a configuration in which the driven roller 77 moves in a different direction from each other, after the first and second plate cylinders 11 and 12 have been moved to the image recording positions, the transmission roller 78 is driven by the driving roller 76 and the driven roller 77. By moving the transmission roller 78 to the drive transmission position in pressure contact with both of them, the transmission roller 78 can be securely pressed not only to the drive roller 76 but also to each driven roller 77 moved to the image recording position. The first and second plate cylinders 11 and 12 can be accurately rotated without causing slippage between the driven rollers 77.

The driven roller 77 has four positioning members 8 formed of V blocks for positioning and fixing the first and second plate cylinders 11 and 12 at predetermined angular positions.
1a, 81b, 81c and 81d are provided. The positioning members 81 a, 81 b, 81 c, and 81 d engage with a locking pin 85 provided at the end of a lever 84 that swings about a shaft 83 by driving the air cylinder 82, thereby causing the driven roller 77 to move. First and second plate cylinders 1 through
It is used for positioning and fixing 1, 12 at a predetermined rotation angle position.

The driven roller 77 is provided with an upright detection plate 86 for detecting the rotational angle position of the driven roller 77, and the side plate 37 detects the detection plate 86. Photocoupler 87 is provided. The rotation angle position of the driven roller 77, that is, the rotation angle position of the first and second plate cylinders 11 and 12, is determined by the detection signal of the detection plate 86 by the photocoupler 87 and
The first and second plates are connected to the support shafts 36 of the second plate cylinders 11 and 12.
And a rotary encoder (not shown) that generates a pulse signal with the rotation of the plate cylinders 11 and 12.

Further, a light-shielding plate 88 is attached to the support shaft 36 of the first and second plate cylinders 11 and 12.

Next, the first,
Anti-rotation operation for the second plate cylinders 11, 12, and
The rotation driving operation of the first and second plate cylinders 11 and 12 by the above-described traction type plate cylinder rotation mechanism 30 will be described. In the following description, the rotation prevention operation and the rotation driving operation for the first plate cylinder 11 will be described. However, the rotation prevention operation and the rotation driving operation for the second plate cylinder 12 are also performed by the same process.

As shown in FIG. 4, the first plate cylinder 11 is
In the printing position of the first plate cylinder 11
The gear 51 arranged concentrically with the first blanket cylinder 13 and the gear 52 arranged concentrically mesh with each other.

In this state, if the first plate cylinder 11 starts moving from the first printing position to the image recording position by the first plate cylinder moving mechanism 31, as shown in FIG. The gear 51 arranged coaxially with the cylinder 11 and the gear 52 arranged coaxially with the first blanket cylinder 13 are gradually disengaged. In addition, the rotation preventing member 4
7, the guide pin 56 slides along the inclined surface 59 of the release member 48, and the lever 54 swings about the shaft 53, so that the engagement pin 55 starts moving into the notch in the rotating plate 46. .

At this time, the gear 51 arranged coaxially with the first plate cylinder 11 and the gear 52 arranged coaxially with the first blanket cylinder 13 completely mesh with each other. The first plate cylinder 1 has not been released and has been rotated by the rotation preventing member 47.
Since the rotation of 1 is not yet performed, the first plate cylinder 11 moves toward the image recording position while rotating counterclockwise in the state shown in FIG. Therefore, it is possible to prevent the gears 51 and 52 from being damaged by collision.

Then, as shown in FIG. 6, the first plate cylinder 1
1 further moves toward the image recording position, and the first plate cylinder 1
In a state where the gear 51 arranged coaxially with the gear 1 and the gear 52 arranged coaxially with the first blanket cylinder 13 are released, the guide pin 56 of the rotation preventing member 47 is released.
Is completely disengaged from the inclined surface 59 of the release member 48, and the engagement pin 55 is completely housed in the notch in the rotating plate 46. Therefore, rotation of the first plate cylinder 11 is prevented.

In this state, the first plate cylinder 11 is moved to the image recording position by driving the first plate cylinder moving mechanism 31, as shown in FIG. Then, as shown in FIG. 8, the transmission roller 78 of the plate cylinder rotating mechanism 30 is driven by the air cylinder 80 so that the driving roller 76 and the driven roller 77 are driven.
Are moved to the drive transmission position in pressure contact with both. Thereafter, the pressing plate 62 of the release mechanism 49 is moved from the position indicated by the solid line to the position indicated by the two-dot line in FIG. This allows
When the pressing pin 57 of the rotation preventing member 47 moves downward and the lever 54 swings about the shaft 53, the engaging pin 55 is disengaged from the notch in the rotating plate 46.
Accordingly, the first plate cylinder 11 becomes rotatable.

In this state, the first plate cylinder 11 is rotated at a low speed by the traction type plate cylinder rotating mechanism 30, and a printing plate is mounted on the first plate cylinder 11. Record the image on the printing plate. Then, after the recording of the image on the printing plate is completed, the printing plate is developed by the developing device 26. When the recording and development processing of the image on the printing plate is completed, the first plate cylinder 11 is returned to the origin position using the detection values of the detection plate 86 and the photocoupler 87 and the like. Then, the transmission roller 78 of the plate cylinder rotating mechanism 30 is moved to the retracted position by driving the air cylinder 80, and the air cylinder 82 shown in FIG. 8 is driven to engage the positioning member 81a with the engagement pin 85. Thus, the first plate cylinder 11 is positioned and fixed at a predetermined rotation angle position via the driven roller 77.

After that, the pressing plate 6 in the release mechanism 49
2 is moved from the position indicated by the two-dot chain line in FIG. 7 to the position indicated by the solid line in FIG. As a result, the pressing pin 57 of the rotation preventing member 47 moves upward and the lever 54 swings about the shaft 53 so that the engaging pin 55 of the rotation preventing member 47 Engage. Accordingly, rotation of the first plate cylinder 11 is prevented. Thereafter, the air cylinder 82 is driven so that the positioning member 81a and the engaging pin 85
Disengage with.

Subsequently, by driving the first plate cylinder moving mechanism 31, the first plate cylinder 11 is moved from the image recording position to the first printing position. Along with the movement of the first plate cylinder 11, the rotation preventing member 47 is operated in a reverse operation to the movement of the first plate cylinder 11 from the first printing position to the image recording position shown in FIGS. The engagement between the engagement pin 55 and the notch in the rotary plate 46 is released.

That is, with the movement of the first plate cylinder 11 from the position shown in FIG. 6 to the position shown in FIG.
7, the guide pin 56 slides along the inclined surface 59 of the release member 48, and the lever 54 swings about the shaft 53, so that the engaging pin 55 moves outward from inside the cutout portion of the rotary plate 46. I do. At the same time, the first plate cylinder 11
The meshing operation of the gear 51 arranged concentrically with the first blanket cylinder 13 and the gear 52 arranged concentrically is started.

At this time, when the gear 51 arranged coaxially with the first plate cylinder 11 and the gear 52 arranged coaxially with the first blanket cylinder 13 start the meshing operation. Accompanying
The prevention of rotation of the first plate cylinder 11 by the rotation preventing member 47 is released, and the first plate cylinder 11 moves toward the first printing position while rotating clockwise in the state shown in FIG. I do. Therefore, it is possible to prevent the gears 51 and 52 from being damaged by collision.

Then, as shown in FIG. 4, the first plate cylinder 1
1 is returned to the first printing position, the gear 51 and the first blanket cylinder 1 arranged concentrically with the first plate cylinder 11
The gear 3 and the coaxially arranged gear 52 completely mesh with each other.

Referring again to FIG. 1, around the first plate cylinder 11 or the second plate cylinder 12 moved to the image recording position,
A plate feeding section 23 and a plate discharging section 24 are arranged.

The plate supply unit 23 includes a supply cassette 63 for storing a long roll-shaped printing plate on which no image is recorded in a light-tight state, and a leading end of the printing plate pulled out from the supply cassette 63. A guide member 64 and a guide roller 65 for guiding the surface of the first plate cylinder 11 or the second plate cylinder 12 and a cutter 66 for cutting a long printing plate into a sheet-shaped printing plate are provided. It is arranged. The first and second plate cylinders 11 and 12 are provided with a pair of holding claws (not shown) for holding the leading and trailing ends of the printing plate supplied from the plate supply unit 23. .

After the printing is completed, the plate discharging section 24 moves the first plate cylinder 1
It has a claw mechanism 73 for peeling the printing plate held on the first or second plate cylinder 12 and a conveyor mechanism 69 for transporting the printing plate peeled by the action of the claw mechanism 73 to the discharge cassette 68. .

The leading end of the printing plate pulled out of the supply cassette 63 in the plate supplying section 23 is guided by a guide roller 65 and a guide member 64, and the gripper of one of the first plate cylinder 11 and the second plate cylinder 12 is held. In addition. Then, the first plate cylinder 11 or the second plate cylinder 12 is rotated by the drive of the plate cylinder rotating mechanism 30, and the printing plate is wound around the outer periphery of the first plate cylinder 11 or the second plate cylinder 12. Then, the rear end of the printing plate cut by the cutter 66 is held by the other holding claw. In this state, as described above, while the first plate cylinder 11 or the second plate cylinder 12 is rotated at a low speed by driving the plate cylinder rotation mechanism 30,
The image recording device 25 irradiates a modulated laser beam onto the surface of the printing plate held on the outer peripheral portion of the first plate cylinder 11 or the second plate cylinder 12 to record an image.

The printing plate P mounted on the outer peripheral portion of the first plate cylinder 11 is attached to the printing plate P by the image recording device 25 as shown in FIG.
As shown in (a), an image area 67a for printing with black ink and an image area 67b for printing with magenta ink are recorded. Further, as shown in FIG. 10B, the printing plate P mounted on the outer peripheral portion of the second plate cylinder 12 has an image area 67c for printing with cyan ink, as shown in FIG. And an image area 67d for printing with yellow ink. The image area 67a and the image area 67b are equally distributed in a state where the image area 67a and the image area 67b are attached to the outer peripheral portion of the first plate cylinder 11 (that is, 180 degrees apart from each other).
It is recorded at the position where Similarly, the image area 67c and the image area 67d are recorded at positions where they are equally distributed (that is, 180 degrees apart from each other) when mounted on the outer peripheral portion of the second plate cylinder 12. You.

In the above-described embodiment, in order to simplify the structure of the first plate cylinder 11 or the second plate cylinder 12, the outer periphery of the first plate cylinder 11 or the second plate cylinder 12 is reduced. Each of the printing plates P held in the set has two image areas 67 each.
a, 67b or 67c, 67d. However, the first plate cylinder 11 or the second plate cylinder 12 is provided with two sets of holding claws for holding the front end portion and the rear end portion, respectively, to thereby provide the first plate cylinder 11 or the second plate cylinder. A configuration in which two printing plates P are held by each of the cylinders 12 may be adopted. Also in this case, the first printing plate P is equally distributed so that the image areas formed by the respective printing plates P are equally distributed (that is, 180 degrees apart from each other). It needs to be held on the plate cylinder 11 or the second plate cylinder 12.

Referring again to FIG. 1, as described above, around the first plate cylinder 11 moved to the first printing position, the ink supply devices 20a and 20b are provided. An ink supply device 20c and an ink supply device 20d are arranged around the second plate cylinder 12 moved to the second printing position. These ink supply devices 20a, 20
Each of b, 20c, and 20d (hereinafter, collectively referred to as “ink supply device 20”) has a plurality of ink rollers 71 and ink fountains 72.

The ink rollers 71 of the ink supply devices 20a and 20b perform a swing operation by the action of a cam or the like (not shown). Then, by this swinging operation, the two image areas 6 formed on the printing plate P held on the outer peripheral portion of the first plate cylinder 11 are formed.
When an ink roller 71 of the ink supply device 20a or 20b comes into contact with an arbitrary image area of 7a and 67b, ink can be supplied only to a necessary image area. Similarly, the ink supply device 20
The ink rollers 71 of c and 20d also swing by the action of a cam or the like (not shown). And, by this swinging operation,
The ink roller 71 of the ink supply device 20c or 20d comes into contact with an arbitrary image region of the two image regions 67c and 67d formed on the printing plate P held on the outer peripheral portion of the second plate cylinder 12. With this configuration, ink can be supplied only to a necessary image area.

Referring again to FIG. 1, the dampening solution supply device 21
a, 21b, 21c and 21d (when these are collectively referred to as “fountain solution supply device 21”), before the ink is supplied to the printing plate P by the ink supply device 20,
The dampening solution is supplied to the printing plate P. Of these dampening water devices 21, the dampening water supply device 21a is in the image area 67a of the printing plate P, the dampening water supply device 21b is in the image region 67b of the printing plate P, and the dampening water supply device 21c.
Supplies the dampening solution to the image region 67c of the printing plate P, and the dampening solution supply device 21d supplies the dampening solution to the image region 67d of the printing plate P.

Below the first plate cylinder 11 or the second plate cylinder 12 that has moved to the image recording position, the above-described developing device 26 is provided. The developing device 26 has a developing unit, a fixing unit, and a diaphragm unit, and is configured to be able to move up and down between a standby position indicated by a two-dot chain line and a developing position indicated by a solid line in FIG.

When the printing plate P on which an image is recorded by the image recording device 25 is developed by the developing device 26, the first plate cylinder 11 or the second plate cylinder is driven by the plate cylinder rotating mechanism 30. The developing unit, the fixing unit, and the squeezing unit are sequentially brought into contact with the printing plate P that rotates together.

The first and second blanket cylinders 13 and 14, which are provided so as to be able to contact the first and second plate cylinders 11 and 12,
It has the same diameter as the first and second plate cylinders 11 and 12, and a blanket for ink transfer is mounted on the outer periphery thereof. Then, the first and second blanket cylinders 13, 1
Reference numeral 4 designates a configuration in which the first and second plate cylinders 11 and 12 and the impression cylinder 15 can be freely contacted and separated by a cylinder insertion mechanism described later.

FIG. 11 shows the first blanket cylinder 13.
FIG. 2 is a schematic diagram showing a body insertion mechanism. The mechanism for inserting the second blanket cylinder 14 also has the same configuration as the mechanism for inserting the first plate cylinder 13 shown in FIG.

An eccentric shaft 102 having a center different from that of the shaft 101 is continuously provided beside the shaft 101 that rotatably supports the first blanket cylinder 13. Further, around the eccentric shaft 102, an eccentric bearing 103 whose center is further different from the shafts 101 and 102 is provided. Therefore, as shown in FIG. 11, the center 104 of the shaft 101 (that is, the center of the first blanket cylinder 13), the center 105 of the eccentric shaft 102,
The centers 106 of the eccentric bearings 103 are arranged at different positions.

The fixed plate 107 fixed to the eccentric shaft 102 and the fixed plate 108 fixed to the eccentric bearing 103 are connected by two connecting plates 111 and 112 constituting a link mechanism. The connecting portion between the two connecting plates 111 and 112 has a cylinder rod 114 of the air cylinder 113.
The tip is connected. The main body of the air cylinder 113 is connected to one end of a rotation plate 116 that rotates around a shaft 115. Further, the other end of the rotating plate 116 is
It is connected to a fixed plate 118 fixed to the eccentric bearing 103 via a rod 117.

The rotating plate 116 and the shaft 120 of the eccentric member 119 are connected to the two connecting plates 12 forming the link mechanism.
1, 122. The distal end of a cylinder rod 124 of an air cylinder 123 fixed to the apparatus main body is connected to a connecting portion between the two connecting plates 121 and 122. Further, the worm wheel 125 connected to the eccentric member 119 is screwed with a worm gear 127 rotated by driving of the motor 126.

In this configuration, when the cylinder rods 114 and 124 of the air cylinders 113 and 123 are extended, as shown in FIG. 11, the surface of the first blanket cylinder 13 and the first plate cylinder 11 And impression cylinder 1
5 are separated by a small distance.

In this state, when the cylinder rod 114 is contracted by driving the air cylinder 113, the first blanket cylinder 13 is moved to the first blanket cylinder 13 by the action of the link mechanism by the two connecting plates 111, 112 and the like. It moves in the direction of the plate cylinder 11 and the cylinder is inserted into the first plate cylinder 11.

In this state, when the cylinder rod 124 is contracted by driving the air cylinder 123, the first blanket cylinder 13 is moved by the action of the link mechanism constituted by the two connecting plates 121, 122 and the like. It moves in the direction of the impression cylinder 15, and is inserted into the impression cylinder 15.
At this time, since the rotating plate 116 also rotates clockwise about the shaft 115, the first blanket cylinder 13 is
It moves not only in five directions but also in the direction of the first plate cylinder 11. Therefore, the first plate cylinder 1 in the first blanket cylinder 13
1 is maintained.

When the eccentric member 119 is rotated, the shaft 120 of the eccentric member 119 moves slightly. For this reason,
The contact pressure between the impression cylinder 15 and the first plate cylinder 11 and the first blanket cylinder 13 is adjusted by rotating the worm wheel 125 connected to the eccentric member 119 by driving the motor 126 and finely moving the shaft 120. can do.
Therefore, the printing pressure at the time of printing using the first blanket cylinder 13 can be adjusted.

Referring to FIG. 1 again, the blanket cleaning device 29 disposed between the first and second blanket cylinders 13 and 14 moves from the unwinding roll to the winding roll via a plurality of pressure rollers. The cleaning liquid is supplied to a long cleaning cloth stuck on the path leading to the first and second blanket cylinders 13 and 14, and then the cleaning liquid is slid. , The surfaces of the second blanket cylinders 13 and 14 are cleaned. The cleaning cloth was applied to the impression cylinder 1
The surface of the impression cylinder 15 may also be cleaned by contacting the surface of the impression cylinder 5.

The impression cylinder 15 provided so as to be able to contact the first and second blanket cylinders 13 and 14 is provided with the first and second plate cylinders 1.
1, 12 and first and second blanket cylinders 13, 14
直径 of the diameter of Further, the impression cylinder 15 has a gripper (not shown) for holding and transporting the leading end of the printing paper.

The paper feed cylinder 16 disposed adjacent to the impression cylinder 15 has the same diameter as the impression cylinder 15. The paper feeding cylinder 16 holds and transports the leading end of the printing paper supplied one by one from the paper feeding unit 27 by a gripper (not shown) by a suction board 74 that reciprocates. The leading end of the printing paper held by the gripper is held by the gripper of the impression cylinder 15 when the printing paper is transferred from the paper feed cylinder 16 to the impression cylinder 15.

The paper discharge cylinder 17 disposed adjacent to the impression cylinder 15 has the same diameter as the impression cylinder 15. The paper discharge cylinder 17 has a structure in which a pair of chains 19 is wound around both ends, and grippers are provided on connecting members (not shown) that connect the pair of chains 19. The leading end of the printing paper held by the gripper of the impression cylinder 15 is
When the printing paper is transferred from the impression cylinder 15 to the discharge cylinder 17,
It is held by one of the grippers of the paper discharge cylinder 17. Then, the printing paper is conveyed onto the paper discharge unit 28 as the chain 19 moves and is discharged.

The paper feed cylinder 16 is connected to a drive motor via a belt (not shown). And the paper feed cylinder 1
6, the impression cylinder 15, the paper discharge cylinder 17, and the first and second blanket cylinders 13 and 14 are respectively connected by gears attached to their ends. Further, the first blanket cylinder 13 and the first plate cylinder 11 moved to the first printing position, and the second blanket cylinder 14 and the second plate cylinder 12 moved to the second printing position, As described above, they are connected by the gears 51 and 52 attached to their ends, respectively. Accordingly, by the driving of a drive motor (not shown), these paper feed cylinder 16, impression cylinder 15, discharge cylinder 17, first and second blanket cylinders 13, 14, and first and second plate cylinders 11, 12 are moved. Rotate in synchronization with each other.

FIG. 12 is a block diagram showing a main electrical configuration of the printing apparatus. This printing apparatus has a ROM 141 storing operation programs necessary for controlling the apparatus.
And a RAM 1 in which data and the like are temporarily stored during control.
And a control unit 140 including a CPU 143 for executing a logical operation. The control unit 140 controls the ink supply device 20, the image recording device 25, the development processing device 26, the blanket cleaning device 2 via the interface 144.
9, first and second plate cylinder moving mechanisms 31, 32, first and second
And a drive circuit 145 for generating a drive signal for a drive unit or the like in a blanking mechanism for the blanket cylinders 13 and 14. The printing apparatus is controlled by the control unit 140, and executes a plate making operation and a printing operation described later.

Next, a description will be given of a vibration isolating mechanism of the printing apparatus, which is a feature of the present invention. FIG. 13 is a plan view showing the printing apparatus together with an anti-vibration mechanism, and FIG. 14 is a side view thereof.

The first and second plate cylinders 11 and 12, the first and second blanket cylinders 13 and 14, the ink supply device 20, the dampening solution supply device 21, the impression cylinder 15, the paper supply cylinder 16, Paper discharge cylinder 17, plate feeding unit 23, plate discharge unit 24, image recording device 2
5, development processing device 26, paper supply unit 27, paper discharge unit 28, blanket cleaning device 29, plate cylinder rotation mechanism 30, first and second
The plate cylinder moving mechanisms 31, 32, the control unit 140, and the like directly or indirectly via the side plate 37, etc.
And a frame 483 shown in FIG.
Then, three anti-vibration members 485 are disposed at the lower end of the frame 483, that is, between the frame 483 and the floor 484 on which the printing apparatus is installed.

FIG. 15 is a front view of the vibration isolator 485, and FIG. 16 is a side view of the vibration isolator 485.

The anti-vibration member 485 functions as anti-vibration means corresponding to the natural vibration frequency of the entire printing apparatus. The leg portion 486 functions as a mounting portion for mounting the anti-vibration member 485 to the frame 483. , Anti-vibration rubber 487
And a mounting plate 488 for fixing the vibration-proof rubber 487 to the lower end of the leg 486.

As the vibration-proof rubber 487, a rubber having a characteristic that it is difficult to transmit a vibration frequency inherent to the printing apparatus is used. Therefore, by disposing the vibration isolating member 485 having the vibration isolating rubber 487 at the lower end thereof between the frame 483 and the floor surface 484 on which the printing apparatus is installed, vibrations from outside the printing apparatus are prevented. 485 makes it possible to prevent this.

For this reason, the absolute positional relationship between the printing plate P mounted on the first plate cylinder 11 or the second plate cylinder 12 moved to the image recording position and the image recording device 25 is maintained with high precision. This makes it possible to record an image with high accuracy.

Also, as in the above-described embodiment, the first
Even in the case of a printing apparatus in which the plate cylinder 11 or the second plate cylinder 12 reciprocates between the image recording position and the printing position,
The first and second plate cylinder moving mechanisms 3 are configured to prevent vibration of the entire printing apparatus by the plurality of vibration isolating members 485.
The first plate cylinder 11 and second plate cylinder 11
Of the plate cylinder 12 can be prevented. For this reason,
This makes it possible to simplify the configuration of the entire vibration isolation mechanism.

Next, plate making and printing operations by the printing apparatus will be described. FIG. 17 is a flowchart showing an outline of a plate making and printing operation by this printing apparatus. Note that the printing and plate making operations are performed when multicolor printing is performed on printing paper with four color inks of yellow, magenta, cyan, and black.

First, a prepress process for recording an image on the printing plate P on the first and second plate cylinders 11 and 12 and performing a developing process is executed (step S1). This plate making process is executed according to the process shown in the flowchart of FIG. 18 as a subroutine.

That is, first, the first plate cylinder 11 is
Is moved to the image recording position indicated by the two-dot chain line (step S11).

Next, the printing plate P is supplied to the outer periphery of the first plate cylinder 11 (step S12). The supply of this printing plate P is
This operation is performed by holding the leading end of the printing plate P pulled out from the supply cassette 63 and the rear end of the printing plate P cut by the cutter 66 with a pair of holding claws (not shown).

Subsequently, an image is recorded on the printing plate P held on the outer periphery of the first plate cylinder 11 (step S13). The image is recorded by rotating the first plate cylinder 11 at a low speed and irradiating the modulated printing laser beam to the printing plate P held on the outer periphery of the first plate cylinder 11 from the image recording device 25. Be executed.

Next, the printing plate P on which the image has been recorded is developed (step S14). In this developing process, after the developing device 26 is raised from the retracted position shown by the two-dot chain line to the developing position shown by the solid line in FIG.
This is performed by sequentially bringing the developing roller 374 of the developing unit 371, the fixing roller of the fixing unit 372, and the stop roller 376 of the stop unit 373 into contact with the printing plate P rotating together with the printing plate P.

When the development process is completed, the first plate cylinder 1
1 is moved to a first printing position indicated by a solid line in FIG. 1 (step S15).

Subsequently, a plate making process for the printing plate P held on the outer periphery of the second plate cylinder 12 is executed by the same operation as in steps S11 to S15 (steps S16 to S2).
0). Then, when the plate making on the printing plate P held on the outer periphery of the first and second plate cylinders 11 and 12 is completed, the plate making process is completed.

Referring to FIG. 17 again, when the plate making process is completed, a printing process for printing on printing paper using the printing plate P on the first and second plate cylinders 11 and 12 is executed (step). S2). This printing process is performed as follows.

That is, first, each dampening solution supply device 21 and each ink supply device 20 are connected to the first and second plate cylinders 11, 1 and 2, respectively.
2 is brought into contact only with the corresponding image area of the printing plate P held on the top. Thereby, each image area 67a, 67
b, 67c and 67d correspond to the respective dampening water supply devices 21.
Further, dampening water and ink are supplied from each ink supply device 20. Then, the ink supplied to the printing plate P is transferred to corresponding areas of the first and second blanket cylinders 13 and 14.

Then, the printing paper is supplied to the paper feed cylinder 16. The printing paper is transferred from the paper feed cylinder 16 to the impression cylinder 15. In this state, when the impression cylinder 15 continues to rotate, the impression cylinder 15
Has half the diameter of the first and second plate cylinders 11 and 12 and the first and second blanket cylinders 13 and 14, so that the printing paper held on the outer periphery of the impression cylinder 15 , In the first rotation, black and cyan inks,
In the second rotation, magenta and yellow inks are transferred.

In this manner, the leading end of the printing paper on which the printing of four colors has been completed is transferred from the impression cylinder 15 to the discharge cylinder 17. The printing paper on which the printing of the four colors has been completed is conveyed to the discharge unit 28 together with the gripper of the discharge cylinder 17 by the driving of the pair of chains 19 and discharged.

When the printing process is completed, the printing plate P used for printing is discharged (step S3). In order to discharge the printing plate P, first, the first plate cylinder 11 is moved to an image recording position indicated by a two-dot chain line in FIG. Then, the first plate cylinder 11 is rotated counterclockwise, and the end of the printing plate P held on the first plate cylinder 11 is peeled off by the claw mechanism 73. It is guided by 69 and discharged into the discharge cassette 68. Then, after returning the first plate cylinder 11 to the first printing position, the second plate cylinder 12 is moved from the second printing position to the image recording position, and by performing the same operation as described above, The printing plate P held on the second plate cylinder 12 is discharged into the discharge cassette 68.

When the step of discharging the printing plate P is completed, the first and second blanket cylinders 13 and 14 are cleaned by the blanket cylinder cleaning device 29 (step S4).

When the cleaning of the first and second blanket cylinders 13 and 14 is completed, it is confirmed whether or not another printing work is to be performed (step S5). To perform another printing operation, the operations of steps 1 to 4 are repeated.

When the printing operation has been completed, the ink is washed (step S6). The cleaning of the ink is performed by removing and cleaning the ink adhered to the ink roller 71 and the ink fountain 72 in each ink supply device 20 by an ink cleaning device (not shown) provided in each ink supply device 20. .

When the ink washing step is completed, all the steps are completed.

[0103]

According to the first aspect of the present invention, a vibration preventing device for preventing vibration of the entire printing apparatus between an installation floor on which the printing apparatus is installed and a frame section supporting the plate making section and the printing section. Since the vibration means is provided, vibration from outside the printing apparatus can be prevented by the vibration-proof means, and the absolute positional relationship between the printing plate and the image recording apparatus can be maintained with high accuracy. For this reason, it is possible to record an image with high accuracy.

According to the second aspect of the present invention, by moving the plate cylinder between the image recording position and the printing position,
The image recording device and the like used in the plate making process of the printing plate and the ink supply device and the dampening solution supply device and the like used in the printing process can be arranged at different positions that do not interfere with each other. In addition, since a vibration isolating means for preventing vibration from outside the printing apparatus is provided between the installation floor surface on which the printing apparatus is installed and the frame section supporting the plate making section and the printing section,
The vibration of the entire printing apparatus is prevented by the vibration isolating means, and the absolute positional relationship between the printing plate held by the plate cylinder and the image recording apparatus can be maintained with high accuracy. For this reason, it is possible to record an image with high accuracy.

According to the third aspect of the present invention, by moving the first and second plate cylinders between the image recording position and the printing position, the image recording apparatus used in the plate-making process of the printing plate. And the ink supply device and the dampening solution supply device used in the printing process can be arranged at separate positions that do not interfere with each other. The image can be recorded on the printing plate held by the second plate cylinder. Further, since a vibration isolating means for preventing vibration from outside the printing apparatus is provided between the installation floor surface on which the printing apparatus is installed and the frame section supporting the plate making section and the printing section, vibration of the entire printing apparatus is provided. Is prevented by the vibration isolating means, and the absolute positional relationship between the printing plate held on the plate cylinder and the image recording apparatus can be maintained with high accuracy. For this reason, it is possible to record an image with high accuracy.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a printing apparatus according to the present invention.

FIG. 2 is a front view of first and second plate cylinder moving mechanisms 31 and 32;

FIG. 3 is a side sectional view showing the vicinity of a bearing section 33 in the first plate cylinder moving mechanism 31.

FIG. 4 is a rotation preventing member 47 provided on the first plate cylinder 11;
FIG. 5 is a schematic diagram showing a relationship between the image forming apparatus and a release member 48 provided at a first printing position.

FIG. 5 shows a rotation preventing member 47 provided on the first plate cylinder 11.
FIG. 5 is a schematic diagram showing a relationship between the image forming apparatus and a release member 48 provided at a first printing position.

FIG. 6 shows a rotation preventing member 47 provided on the first plate cylinder 11;
FIG. 5 is a schematic diagram showing a relationship between the image forming apparatus and a release member 48 provided at a first printing position.

FIG. 7 shows a rotation preventing member 47 provided on the first plate cylinder 11.
FIG. 4 is a schematic diagram illustrating a release member 49 disposed at an image recording position.

FIG. 8 is a front view of the vicinity of the plate cylinder rotating mechanism 30.

FIG. 9 is a side sectional view showing a main part of FIG. 8;

FIG. 10 is an explanatory diagram showing an arrangement of an image area 67 on a printing plate P.

FIG. 11 is a schematic view showing a mechanism for inserting the first blanket cylinder 13;

FIG. 12 is a block diagram illustrating a main electrical configuration of the printing apparatus.

FIG. 13 is a plan view showing the printing apparatus together with an anti-vibration mechanism.

FIG. 14 is a side view illustrating the printing apparatus together with a vibration isolation mechanism.

FIG. 15 is a front view of an anti-vibration member 485.

FIG. 16 is a side view of an anti-vibration member 485.

FIG. 17 is a flowchart illustrating an outline of plate making and printing operations performed by the printing apparatus.

FIG. 18 is a flowchart showing a plate making process.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 first plate cylinder 12 second plate cylinder 13 first blanket cylinder 14 second blanket cylinder 15 pressure cylinder 16 paper feed cylinder 17 paper discharge cylinder 20 ink supply device 21 dampening solution supply device 23 plate supply unit 24 Plate discharging unit 25 Image recording device 26 Developing device 27 Paper feeding unit 28 Paper discharging unit 30 Plate cylinder rotating mechanism 31 First plate cylinder moving mechanism 32 Second plate cylinder moving mechanism 37 Side plate 483 Frame 484 Floor surface 485 Anti-vibration member 486 Legs 487 Anti-vibration rubber 488 Mounting plate P Printing plate

Claims (3)

[Claims] 1. A printing apparatus for printing an image by recording an image on the printing plate, and then supplying ink to the printing plate to perform printing, comprising: a plate cylinder for holding the printing plate on an outer periphery thereof; An image recording device for recording an image on a printing plate held by a cylinder, a plate making unit for making a printing plate, and printing using the printing plate held by the plate cylinder and made by the plate making unit. , A frame portion supporting the plate making section and the printing section, and a vibration isolator disposed between the installation floor surface on which the printing apparatus is installed and the frame section to prevent vibration of the entire printing apparatus. And a printing device. 2. A printing apparatus for printing an image by recording an image on the printing plate, and then supplying ink to the printing plate to perform printing, comprising: a plate cylinder for holding the printing plate on an outer peripheral portion thereof; An image recording device that records an image on a printing plate held on a cylinder, an image recording position facing the plate cylinder, an image recording position facing the image recording device, and a printing position where printing is performed by the printing plate held on the plate cylinder. A plate cylinder moving mechanism for moving the plate cylinder between the plate cylinder, the image recording device and the plate cylinder moving mechanism directly or indirectly, and a floor for installing a printing apparatus and the frame unit. And a vibration isolator arranged between the vibration devices to prevent vibration of the entire printing apparatus. 3. A printing apparatus for printing an image by recording an image on the printing plate and then supplying ink to the printing plate, wherein the first and second holding devices hold the printing plate on an outer peripheral portion thereof. A plate cylinder; a single image recording device for recording an image on a printing plate held by the first and second plate cylinders; and an image facing the first plate cylinder with the image recording device. A first plate cylinder moving mechanism that moves between a recording position and a first printing position where printing is performed by a printing plate held by the first plate cylinder; and A second plate cylinder moving mechanism configured to move between a recording position and a second printing position at which printing is performed by the printing plate held by the second plate cylinder; and the plate cylinder, the image recording device, and the first plate cylinder. A frame portion for directly or indirectly supporting the second plate cylinder moving mechanism, an installation floor for installing a printing device, And a vibration isolator disposed between the frame and the frame unit to prevent vibration of the entire printing apparatus.