WO2020022019A1 - Processing method and processing device - Google Patents

Abstract

Provided are a processing method and a processing device in which there is a large amount of solid matter recovered from an exhausted developing solution and moisture content of discharged solids is low. In the processing method, solid matter is removed from the exhausted developing solution containing solid matter generated by removing an unexposed portion of a photosensitive resin plate after imagewise exposure by developing with a wash-out solution. In the processing method, while exhausted developing solution is supplied into a container, the container is rotated, and solid matter contained in the exhausted developing solution is centrifuged, then the supply of the exhausted developing solution is stopped and the container continues to rotate for a certain period of time, and then the container is stopped from rotating.

Description

Processing method and processing apparatus

The present invention relates to a method and an apparatus for processing a developing fatigue solution, and particularly includes a solid matter generated by removing an unexposed portion of a photosensitive resin plate after imagewise exposure by development using a washing solution. The present invention relates to a processing method and a processing apparatus for developing fatigue liquid.

各種 Various methods are known as a method of developing a printing plate using a photosensitive resin plate. For example, in a developing method in which development is performed using an aqueous developing solution containing water as a main component, the photosensitive resin plate after imagewise exposure is immersed in the aqueous developing solution, and an unexposed portion is exposed in the aqueous developing solution with a brush or the like. The development is performed by washing out the uncured resin or the like. In this case, the uncured resin or the like exists in a dispersed state in the developer. It has been proposed to remove and reuse the dispersed uncured resin from a developer in which the uncured resin or the like exists in a dispersed state. Here, the above-mentioned developing solution is also called a washing solution.

For example, Patent Literature 1 discloses a method of treating a washing liquid containing solid matter generated when developing by removing an unexposed portion while immersing in a washing liquid after exposing a photosensitive resin plate. ing. In Patent Document 1, a treated liquid obtained by separating and removing a solid substance having a specific gravity smaller than that of the washing liquid by using a centrifugal sedimentation type centrifugal separation process having an inside disk, and separating and removing a solid substance having a specific gravity smaller than that of the washing liquid. Is further reused as a washing solution.

JP-A-7-328620

In Patent Document 1, a solid substance having a specific gravity smaller than that of the washing liquid is separated and removed by a centrifugal sedimentation type centrifugal separation process having an inside disk. However, in Patent Document 1, since the separated washing liquid is collected by a skimming tube, a large amount of solid matter is mixed in the washing liquid due to a change in the amount of separated solid matter due to the concentration of solid matter mixed therein. As a result, the solid content of the treated washing liquid increases.

In recent years, a flexo plate material compatible with CTP (Computer To Plate) having a black layer layer applied on the surface thereof has appeared, and there is an increasing demand to simultaneously separate solids having a higher specific gravity than the washing liquid from the washing liquid. . In Patent Literature 1, it is possible to separate both a solid substance having a higher specific gravity than the washing liquid and a solid substance having a lower specific gravity than the washing liquid.
In Patent Literature 1, the captured solid dispersion must be removed after stopping rotation for centrifugation in the case of a batch type. There are two ways to remove the scraper: (i) a method of removing it with a spatula or the like by hand, (ii) a method of installing a scraper in a centrifuge, inserting the scraper inside the rotor while rotating at a low speed, and scraping (iii). There is a method in which a bag-like article or a molded article is provided inside the rotor, and the interior article is taken out.

In Patent Document 1, it is not possible to extract only the washing liquid by any of the above methods (i) to (iii). For this reason, when removing both the solid matter having a higher specific gravity than the washing liquid and the solid matter having a lower specific gravity than the washing liquid, a large amount of the washing liquid is mixed to increase the water content, and the solid matter is discarded. In this case, the amount of waste increases. Further, Patent Document 1 describes that the treated washing liquid is reused, but when the water content increases as described above, the amount of the washing liquid that can be reused decreases.

目的 It is an object of the present invention to provide a processing method and a processing apparatus in which the amount of solids recovered from a developing fatigue solution is large and the water content of the discharged solids is low.

In order to achieve the above object, the present invention provides a developing fatigue solution containing a solid matter generated by removing an unexposed portion of a photosensitive resin plate after imagewise exposure by development using a washing solution. Is a processing method for removing solid matter, wherein the container is rotated while supplying the developing fatigue liquid into the container, and the solid matter contained in the developing fatigue liquid is centrifuged. It is an object of the present invention to provide a processing method for stopping the rotation of the container after stopping the rotation of the container for a predetermined time.

In addition, the present invention provides a developing fatigue solution containing a solid matter generated by removing an unexposed portion of the photosensitive resin plate after imagewise exposure by development using a washing solution, the specific gravity of which is higher than that of the washing solution. And a second solid having a specific gravity greater than that of the washing solution. The developing method further comprises: supplying a developing fatigue solution into a rotating container; A first step of centrifuging the first solid and the second solid, accumulating the second solid on an inner wall of the container, and accumulating the first solid on a holding member provided in the container; And stopping the supply of the developing fatigue liquid to the rotating container, and continuing the rotation of the container for a certain period of time, and, in a state where the first solid is held by the holding member, The third step of stopping the rotation, and rotating the container, the container is held by the holding member. 1 solids preferably has a fourth step of removing the retaining member.

After the fourth step, a part of the developing fatigue solution discharged from the container is returned to the container, the container is rotated to centrifuge the developing fatigue solution in the container, and the first solid is accumulated on the holding member. After that, the developing fatigue liquid in the container is drained from the container, and then, while the first solid matter accumulated on the holding member is held by the holding member, the rotation of the container is stopped, and again, Preferably, the container is rotated.
Preferably, after the fourth step, a step of simultaneously removing the first solid and the second solid from the container is provided.
It is preferable to have a step of reusing the developing fatigue solution discharged from the container as a washing solution.

The present invention provides a container having an opening for storing a developing fatigue solution containing a solid matter generated by removing an unexposed portion of a photosensitive resin plate after imagewise exposure by development using a washing solution. A drive unit for rotating the container to centrifuge a first solid having a lower specific gravity than the washing liquid and a second solid having a higher specific gravity than the washing liquid in the container; A regulating member provided to face the portion and retaining the first solid substance in the container; and at least one regulating member provided by centrifugal separation provided in the container and on the side opposite to the opening with respect to the regulating member. A holding member for holding the first solid matter to be performed, and the drive unit rotates the container in which the developing fatigue liquid is stored, centrifugally separates the first solid matter, and accumulates the first solid matter on the holding member. Stop supplying the developing fatigue solution to the rotating container and wait for a certain time. During this time, the rotation of the container is continued, and further, after the rotation of the container by the driving unit is stopped while the first solid matter accumulated on the holding member is held by the holding member, The present invention provides a processing apparatus having a control unit for rotating a container.

A storage tank for storing the developing fatigue fluid discharged from the container and returning a part of the discharged developing fatigue fluid to the container; and a supply unit configured to store one part of the developing fatigue fluid discharged from the container. After returning the unit to the container, the control unit rotates the container by the drive unit to centrifuge the developing fatigue solution in the container, accumulates the first solid matter on the holding member, and then develops the developing fatigue solution in the container. The liquid is discharged from the container, and then, after the rotation of the container by the driving unit is stopped in a state where the first solid matter accumulated on the holding member is held by the holding member, the container is again removed by the driving unit. Preferably, it is rotated.

It is preferable to have a removing unit for removing the first solid and the second solid present in the container from the container.
It is preferable to have a circulation section for reusing the developing fatigue solution discharged from the container as a washing solution.

According to the present invention, it is possible to provide a processing method and a processing apparatus which recover a large amount of solids from a developing fatigue solution and have a low water content of the discharged solids.

FIG. 1 is a schematic diagram showing a processing system having a first example of a processing apparatus according to an embodiment of the present invention. FIG. 3 is a schematic diagram illustrating an example of a developing device. It is a schematic diagram which shows one process of the processing method using the processing system which has the 1st example of the processing apparatus of embodiment of this invention. It is a schematic diagram which shows one process of the processing method using the processing system which has the 1st example of the processing apparatus of embodiment of this invention. It is a schematic diagram which shows one process of the processing method using the processing system which has the 1st example of the processing apparatus of embodiment of this invention. It is a schematic plan view showing an example of arrangement of a scraper of a processing unit of an embodiment of the present invention. FIG. 9 is a schematic plan view illustrating another example of the arrangement of the scrapers of the processing apparatus according to the embodiment of the present invention. It is a schematic diagram which shows the modification of the 1st example of the processing apparatus of embodiment of this invention. FIG. 2 is a schematic diagram illustrating a processing system having a second example of the processing apparatus according to the embodiment of the present invention. It is a schematic diagram showing a processing system having a third example of a processing apparatus according to an embodiment of the present invention. It is a schematic diagram showing a processing system having a fourth example of a processing apparatus according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing a processing system having a processing device for comparison.

Hereinafter, a processing method and a processing apparatus of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.
It should be noted that the drawings described below are exemplary for explaining the present invention, and the present invention is not limited to the drawings shown below.
In the following, “to” indicating a numerical range includes the numerical values described on both sides. For example, when ε is a numerical value α ₁ to a numerical value β ₂ , the range of ε is a range including the numerical values α ₁ and β ₂ , and α ₁ ≦ ε ≦ β ₂ in mathematical symbols.
Unless otherwise specified, angles such as “an angle expressed by a specific numerical value” and “vertical” include an error range generally accepted in the relevant technical field.

FIG. 1 is a schematic diagram illustrating a processing system having an example of a processing apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic diagram illustrating an example of a developing apparatus.
The processing system 10 shown in FIG. 1 has a processing device 12 and a developing device 14, and the processing device 12 is connected to the developing device 14.

In the developing device 14, a development fatigue solution containing a solid matter generated by removing an unexposed portion of the photosensitive resin plate after imagewise exposure by development using a washing solution is generated. The developing fatigue liquid is supplied from the developing device 14 to the processing device 12 via the pipe 31.
The processing apparatus 12 is configured such that the first solid matter 36 having a lower specific gravity than the washing liquid contained in the developing fatigue liquid Qw and the second solid substance having a higher specific gravity than the washing liquid are contained in the rotating container 20 for the developing fatigue liquid Qw. The solid 37 is centrifuged. The separated first solids 36 (see FIG. 3) and second solids 37 (see FIG. 3) are removed from the container 20.
The processing apparatus 12 performs, for example, centrifugal sedimentation-type centrifugation, and includes a container 20, an inside disk 22, a keeper disk 23, a case 24, a driving unit 26, a pump 29, and a removing unit 33. And a control unit 38. The drive unit 26 and the pump 29 are connected to a control unit 38, and the control unit 38 controls the operations of the drive unit 26 and the pump 29. The operation of the removing unit 33 is also controlled by the control unit 38.

The container 20 stores the developing fatigue liquid Qw, and is formed by integrating a cylindrical body 20a, a truncated cone-shaped inclined portion 20b, and a cylindrical bottom 20c. A lid 21a is provided in an opening 20e of the body 20a. The lid 21a is formed of a member having a circular band shape in plan view, and has an opening 21b. In the container 20, the side with the body 20a is the upper side, the side with the bottom 20c is the lower side, and the opening 21b is disposed on the upper side.

A shutter 21c is provided in the opening 20f of the inclined portion 20b. The shutter 21c can be opened and closed, and the inclined portion 20b and the bottom portion 20c are not communicated with each other when the shutter 21c is closed.
The drive section 26 is provided with a drive shaft 35a, and the drive shaft 35a is provided with a drive gear 35b. A driven gear 35c is provided around the bottom 20c, and the drive gear 35b and the driven gear 35c are engaged. When the drive shaft 35a is rotated by the drive unit 26, the drive gear 35b rotates, the driven gear 35c rotates, and the container 20 rotates. Thus, the rotation of the drive shaft 35a generated by the drive unit 26 can be transmitted to the container 20. The driving unit 26 rotates the container 20 about the central axis C as a rotation axis, for example, in the direction R, and the first solid material 36 having a specific gravity smaller than the washing liquid contained in the developing fatigue liquid Qw and the washing liquid. The second solid 37 having a large specific gravity is centrifuged in the container 20. The container 20 also functions as a rotating body. The drive unit 26 is configured by, for example, a motor. The combination of the drive shaft 35a, the drive gear 35b, and the driven gear 35c is not limited as long as the container 20 can be rotated using the drive unit 26, and a combination of a drive shaft, a pulley, and a transmission belt is used. You can also.

In centrifugation, the required acceleration depends on the size of the solids dispersed in the centrifugal effect G, which is a multiple of the gravitational acceleration, but is required to be 300 G or more when the particle size is 1 μm or more. In order to achieve a further sufficient removal treatment effect, it is more preferable to be 500 G or more. On the other hand, when the particle size is less than 1 μm, it is preferably 1000 G or more. For this reason, what can produce the centrifugal effect G mentioned above is used for the drive part 26. The rotation number (rpm (revolution per minute)) and rotation time of the container 20 by the driving unit 26 and the rotation timing of the container 20 are controlled by the control unit 38.

In the processing method, which will be described later, the control unit 38 rotates the container 20 in which the developing fatigue liquid Qw is stored by the driving unit 26 to perform centrifugal separation, and accumulates the first solid matter 36 on the keeper disk 23. Then, the supply of the developing fatigue solution Qw to the rotating container 20 is stopped, the rotation of the container 20 is continued for a certain time, and then the first solid matter 36 accumulated on the keeper disk 23 is Then, after the rotation of the container 20 by the driving unit 26 is stopped, the driving unit 26 rotates the container 20 again.
The above-mentioned fixed time period is, for example, 10 minutes or less, more preferably 30 seconds to 5 minutes, and further preferably 1 to 3 minutes. The above-mentioned fixed time period is also a time period during which the supply of the developing fatigue liquid Qw is stopped. For example, after the supply of the developing fatigue liquid Qw is stopped, the solid matter of the developing fatigue liquid Qw is removed.

Although not shown in detail, the bottom 20c is openable and closable on the bottom surface 20d. As shown in FIG. 5, by opening the shutter 21c and the bottom surface 20d, the solid matter in the container 20 can be discharged to the outside. In this case, for example, the tray 32 (see FIG. 5) is disposed below the bottom surface 20d, and the solid matter in the container 20 is collected.

A regulating member is provided inside the container 20 and facing the opening 21b. The regulating member holds the first solid matter 36 in the container 20. The regulating member is, for example, the inside disk 22.
At least one holding member is provided in the container 20 and on a side opposite to the opening 21b with respect to the regulating member. The holding member holds the first solids 36 accumulated by centrifugation. The holding member is, for example, a keeper disk 23, and the processing device 12 in FIG. 1 has three keeper disks 23.

The inside disk 22 and the three keeper disks 23 are spaced apart from each other and are arranged in an overlapping manner.
The inside disk 22 is arranged on the lid 21a side facing the opening 21b, and the three keeper disks 23 are arranged on the opposite side of the inside disk 22 from the opening 21b. The number of the keeper disks 23 is not limited to a plurality, and at least one keeper disk may be provided.
The inside disk 22 and the keeper disk 23 are both fixed in the container 20 and are configured to rotate together with the container 20 when the container 20 rotates, but the invention is not limited thereto. If the centrifugal force can be applied to the first solid material 36 held by the keeper disk 23 when the container 20 rotates, the installation state of the inside disk 22 and the keeper disk 23 with respect to the container 20 is particularly limited. Not something.

The case 24 covers the container 20 and stores the developing fatigue solution Qw overflowing from the opening 21b of the container 20. The container 20 and the case 24 can communicate with each other via an openable and closable outlet (not shown) provided in the inclined portion 20b of the container 20. Therefore, the developing fatigue liquid Qw in the container 20 can be discharged to the case 24.
The case 24 is provided with a discharge path 25 serving as a flow path of the developing fatigue liquid Qw from the case 24 to the defoaming tank 27. The developing fatigue solution Qw in the case 24 passes through the discharge path 25 and is stored in the defoaming tank 27.

The defoaming tank 27 and the developing device 14 are connected by a pipe 28. The pipe 28 is provided with a pump 29. In FIG. 9, which is a schematic view illustrating a processing system 10 a having a second example of the processing apparatus according to the embodiment of the present invention, a separation film 30 is further provided at a position closer to the developing device 14 than the pump 29. The separation film 30 separates solid matter generated by development. For this reason, the separation film 30 is not particularly limited as long as the solid matter contained in the developing fatigue solution Qw can be separated, and is appropriately determined according to the size of the solid matter to be separated. Note that the separation membrane 30 is not always necessary, and may be configured not to be provided as in the processing system 10 shown in FIG. In this case, the developing fatigue solution Qw stored in the defoaming tank 27 is reused without passing through the separation membrane 30 as the developing fatigue solution Qw. Further, even when the separation membrane 30 is provided, it is not always necessary to pass through the separation membrane 30. As described above, the developing fatigue liquid Qw may be used repeatedly without passing through the separation membrane 30.
However, when the developing fatigue liquid Qw is passed through the separation membrane 30, the concentration of the solid matter of the developing fatigue liquid Qw returned to the developing device 14 can be further reduced, and the developing fatigue liquid Qw is repeatedly used. It is preferable because it can be performed.
In the processing system 10a illustrated in FIG. 9, the same components as those of the processing system 10 illustrated in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Here, as described in Patent Document 1, it was verified that the treated liquid obtained by separating and removing a solid substance having a lower specific gravity than the washing liquid was reused as a washing liquid. There was a tendency that scum adheres to the conductive resin plate.
As a result of analysis, the solid matter having a specific gravity smaller than that of the washing liquid has a component having a particle size of 1 to 5 μm and a component having a particle size of 1 μm or less, and the solid material having a particle size of 1 to 5 μm is almost separated and removed. However, it was found that components having a particle size of 1 μm or less gradually increased. This is because the components that can be removed by the centrifugal separator are solids having a particle size of 1 to 5 μm, and the components having a particle size of 1 μm or less cannot be removed by centrifugation, and the concentration is increased by reuse. Conceivable. For this reason, it is preferable that the separation membrane 30 be capable of separating a solid having a particle size of 1 μm or less, for example. For example, a filter having a separation ability of 0.1 μm is used as the separation membrane 30.

The container 20 is provided with a pipe 31 for supplying the developing fatigue liquid Qw into the container 20. The pipe 31 is connected to the developing device 14. For example, the opening 31a of the pipe 31 is disposed between the inside disk 22 and the uppermost keeper disk 23. The position of the opening 31a of the pipe 31 is not particularly limited as long as it is below the inside disk 22.
The configuration of the container 20 is not particularly limited as long as the container 20 can store the developing fatigue liquid Qw and does not undergo plastic deformation due to centrifugal force acting during rotation for centrifugation. As the container 20, for example, a container used in a centrifugal separator of a centrifugal sedimentation type can be appropriately used. In this case, the container 20 has no hole, that is, the body portion 20a, the inclined portion 20b, and the bottom portion 20c are made of a member without holes. For example, a basket-type rotor is used for the container 20.
Further, the capacity of the container 20 is not particularly limited, and is appropriately determined by the amount of the solid matter contained in the developing fatigue solution Qw, the amount of plate making in the developing device 14, and the like.

The inside disk 22 is for retaining the first solid material 36 having a specific gravity smaller than that of the washing liquid in the container 20, similarly to the above-described regulating member, and is formed of, for example, a disk having an opening 22a. The inside disk 22 is provided near the opening 21b in the container 20 so that the first solids 36 collected inside the container 20 by centrifugation are not discharged out of the container 20 together with the developing fatigue liquid Qw. Can be
The first solids 36 collected inside the container 20 are blocked by the inside disk 22 and captured in the container 20. The developing fatigue liquid Qw passes through the outer edge of the inside disk 22 and overflows from the opening 21b of the container 20 to the case 24.

The inside disk 22 is made of metal or resin. It is preferable that the inside disk 22 can be installed without removing the lid 21a. In this case, the inside disk 22 is made of a flexible material such as resin.

The keeper disk 23 holds the first solid material 36 that is accumulated when centrifuged similarly to the above-described holding member. When the developing fatigue liquid Qw is discharged from the container 20, the first solid matter 36 accumulated on the keeper disk 23 is held on the keeper disk 23.
The holding member holds the first solid object 36, but the first solid object 36 on the keeper disk 23 is finally removed from the keeper disk 23. For this reason, it is preferable that the keeper disk 23 be formed of a flat plate on which the first solids 36 are easily deposited and on which the first solids 36 are easily scattered when the container 20 rotates. For this reason, for example, the keeper disk 23 is formed of a disc having no opening.

However, since the keeper disk 23 only needs to be able to accumulate the first solids 36 and hold the first solids 36, at least during centrifugation, according to the mass of the first solids 36. It is sufficient if there is a member at a position where the components are accumulated. For this reason, the keeper disk 23 may be a disk having an opening as described later.
The keeper disk 23 is made of, for example, metal. The keeper disk 23 can be made of the same material as the inside disk 22.

The defoaming tank 27 stores the developing fatigue liquid Qw. The developing fatigue liquid Qw is once supplied to the defoaming tank 27 and, after removing bubbles, is returned to the developing device 14 by the pump 29. The configuration of the defoaming tank 27 is not particularly limited as long as it can store the developing fatigue solution Qw.
The pump 29 returns the developing fatigue liquid Qw from the defoaming tank 27 to the developing device 14 as described above. The configuration of the pump 29 is not particularly limited as long as it can be returned to the developing device 14. The length of the pipe 28, the difference in height between the defoaming tank 27 and the developing device 14, and the development fatigue liquid Qw Is appropriately determined in accordance with the return amount of.
The return timing of the developing fatigue solution Qw stored in the defoaming tank 27 by the pump 29 is controlled by the control unit 38. The pump 29 functions as a circulating unit that reuses the developing fatigue liquid Qw discharged from the container 20 as a washing liquid.

The removing unit 33 includes, for example, a scraper 34 and a moving unit (not shown) that moves the scraper 34. The scraper 34 scrapes and removes deposits deposited on the inner wall 20 g of the container 20. The first solid material 36 and the second solid material 37 deposited on the inner wall 20g are removed by the scraper 34.
The scraper 34 is formed of, for example, a flat plate that can move along the inner wall 20g. The scraper 34 is fixed in the container 20 during centrifugation, and rotates in the same direction R and at the same speed as the container 20. When removing, the scraper 34 is rotated by the moving unit in a direction r (see FIG. 6) opposite to the direction R in which the container 20 rotates.

In the processing device 12, by providing the keeper disk 23, the first solid material 36 is retained on the keeper disk 23 when the developing fatigue liquid Qw is collected, so that the first solid material 36 is mixed into the developing fatigue liquid Qw. And the concentration of the solid matter of the developing fatigue solution Qw discharged from the container 20 can be reduced. For this reason, when the developing fatigue solution Qw is reused as the washing solution Q, even if it is reused repeatedly, an increase in the concentration of the solid matter is suppressed, and as a result, the developing fatigue solution Qw is used as the washing solution more times. , Can be reused.
In addition, by providing the keeper disk 23, the keeper disk 23 holds the developing fatigue liquid Qw in addition to the first solid material 36. Thereby, the water content of the first solid material 36 and the second solid material 37 discharged to the outside of the container 20 can be reduced.

Next, the developing device 14 will be described. The developing device 14 develops, for example, a photosensitive resin plate using an aqueous washing solution.
The developing device 14 is provided with, for example, a developing tank 40 and a brush 42 as shown in FIG. The brush 42 is provided on the driving member 43. The brush 42 is provided with a supply pipe 44. The supply pipe 44 is connected to a supply section 46. In the developing device 14, the washing liquid is supplied from the supply unit 46 to the surface 50 a of the photosensitive resin plate 50 from the brush 42 via the supply pipe 44.

At the time of development, the driving member 43 is rotated by a driving unit (not shown) while the washing liquid Q is supplied from the brush 42 to the surface 50 a of the photosensitive resin plate 50, and the exposed photosensitive resin plate is The surface 50a of the 50 is rubbed. As a result, the uncured portion (not shown) after the exposure is removed from the surface 50a of the photosensitive resin plate 50 and discharged into the washing liquid Q. A state in which the uncured portion (not shown) after the exposure is discharged into the washing liquid Q is referred to as a developing fatigue liquid Qw. The washing-out liquid Q is also included in the developing fatigue liquid Qw.

The developing tank 40 is connected to the pipe 31. It is sent out from the pipe 31 as a developing fatigue liquid Qw.
The pipe 28 is connected to a supply pipe 44. A valve 47 is provided between the pipe 28 and the supply pipe 44. The opening and closing of the valve 47 controls the communication between the pipe 28 and the supply pipe 44. When the processed developing fatigue liquid Qw is not supplied to the supply pipe 44, the valve 47 is closed.
The processed developing fatigue liquid Qw is supplied from the supply pipe 44 to the photosensitive resin plate 50 via the pipe 28. In this case, the valve 47 is open. In the processing apparatus 12 of another embodiment shown in FIG. 9, the separation film 30 is provided in the pipe 28 as described above, and the processed development fatigue solution Qw is supplied through the separation film 30. You.

The developing system of the developing device 14 is not particularly limited, and may be a batch system or a transport system. Further, the developing device 14 may be configured to spray the washing liquid onto the photosensitive resin plate 50 to remove the unexposed portions, or to immerse the photosensitive resin plate 50 in the washing solution to remove the unexposed portions. It may be in a form.
The configuration of the photosensitive resin plate 50 is not particularly limited. For example, the photosensitive resin plate 50 forms a flexographic printing plate used for flexographic printing. The photosensitive resin plate 50 is preferably one that can be developed with an aqueous developer mainly containing water, or one that is called a water-developing type flexographic printing plate precursor. As the photosensitive resin plate 50, a known flexographic printing plate precursor that can be developed with an aqueous developer can be used, and a CTP (Computer To Plate) -compatible flexographic plate material having a black layer layer coated on the surface may be used. .

Next, a processing method will be described.
In the processing method, the container 20 is rotated while supplying the developing fatigue solution Qw into the container 20, and the solid matter contained in the developing fatigue solution Qw is centrifuged. Thereafter, the supply of the developing fatigue solution Qw is stopped, and After the rotation of the container 20 is continued during the time, the rotation of the container 20 is stopped. The container 20 is rotated to remove solid matter held by the keeper disk 23 from the keeper disk 23.
Hereinafter, the processing method will be described in more detail. The schematic diagrams shown in FIGS. 3 to 5 show a processing method using a processing system having an example of the processing apparatus according to the embodiment of the present invention in the order of steps. In the system 10 shown in FIGS. 3 to 5, the same components as those of the processing system 10 shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. 3 and 4, illustration of the scraper 34 is omitted.
In the processing method, first, the surface 50a (see FIG. 2) of the photosensitive resin plate 50 (see FIG. 2) is imagewise exposed, that is, exposed in a specific pattern by an exposure device (not shown).
The photosensitive resin plate 50 after the imagewise exposure is transported to the developing device 14, where the brush 42 (see FIG. 2) is used in the washing solution Q in the developing tank 40 (see FIG. 2). To develop the photosensitive resin plate 50 (see FIG. 2). By the development using the washing liquid Q, the solid matter generated by removing the unexposed portions of the photosensitive resin plate 50 after the imagewise exposure is dispersed in the washing liquid Q (see FIG. 2). As a result, a development fatigue liquid Qw containing a solid is generated.

The developing fatigue liquid Qw is supplied from the developing device 14 to the container 20 rotated about the central axis C by the driving unit 26 via the pipe 31.
By rotating the container 20 about the central axis C as a rotation axis, the first solid matter 36 and the second solid matter 37 contained in the developing fatigue liquid Qw are centrifuged. By the centrifugation, the solid matter contained in the developing fatigue solution Qw is separated in the container 20 according to the mass. The first solid material 36 and the second solid material 37 are centrifuged in the container 20 under predetermined centrifugation conditions such as the number of rotations and the rotation time, and as shown in FIG. The objects 37 are accumulated on the inner wall 20g of the container 20, and the first solids 36 are accumulated on the keeper disk 23 provided in the container 20 (first step). At the time of the above-described centrifugal separation, most of the developing fatigue liquid Qw in the container 20 overflows from the opening 21b and is stored in the case 24. The developing fatigue solution Qw discharged to the case 24 is stored in the defoaming tank 27 via the discharging path 25.

Next, the supply of the developing fatigue solution Qw to the rotating container 20 is stopped, and the rotation of the container 20 by the driving unit 26 is continued for a predetermined time (second step). At this time, in the second step, the first solid material 36 is held by the keeper disk 23. Also in the second step, as described above, for a certain period of time, for example, is 10 minutes or less, more preferably 30 seconds to 5 minutes, and still more preferably 1 to 3 minutes. During the above-mentioned fixed time, the supply of the developing fatigue liquid Qw is stopped. For example, also in the following steps, the supply of the developing fatigue liquid Qw is stopped. After a certain period of time, the developing fatigue liquid Qw can be supplied.
Next, the rotation of the container 20 by the drive unit 26 is stopped while the first solid material 36 is held by the keeper disk 23 (third step). That is, centrifugation is stopped.

Next, the container 20 is rotated by the drive unit 26, and centrifugation is performed again. The first solid material 36 held on the keeper disk 23 is removed from the keeper disk 23 by the centrifugal force acting upon rotation (fourth step). At this time, as shown in FIG. 4, the first solid 36 is blown off and deposited on the inner wall 20 g of the body 20 a of the container 20, but the second solid 37 also exerts a centrifugal force when the container 20 rotates. The container 20 is held on the inner wall 20g of the body 20a of the container 20. Therefore, the first solid matter 36 and the second solid matter 37 are deposited on the inner wall 20g of the body 20a. In this state, the first solid matter 36 and the second solid matter 37 are simultaneously removed from the container 20 by removing the deposit on the inner wall 20g.
Since the first solids 36 and the second solids 37 are removed, the removed first solids 36 and the second solids 37 have a low moisture content. Therefore, when the first solid material 36 and the second solid material 37 are discarded as solid waste, the amount of waste can be reduced.
Further, the supply of the developing fatigue solution Qw supplied to the rotating container 20 is stopped, and after the container 20 is continuously rotated for a certain period of time, the rotation of the container 20 is stopped and the container 20 is rotated. I have. Thereby, the solid-liquid separation property is improved, and the amount of the collected solid can be increased.

(4) The developing fatigue solution Qw stored in the defoaming tank 27 is returned to the developing device 14 via the pipe 28 by the pump 29. At this time, in the processing apparatus 12 of the second embodiment shown in FIG. 9, since the separation film 30 is provided in the pipe 28, the solid matter contained in the developing fatigue liquid Qw is removed, and the developing apparatus 14 Is returned to the developing fatigue solution Qw. The development fatigue solution Qw is used as a washing solution Q (see FIG. 2) or a rinsing solution for washing off the residue remaining on the plate surface of the photosensitive resin plate 50 after developing and removing the unexposed portion.

The first solid matter 36 and the second solid matter 37 present in the container 20 are removed by the removing unit 33, which will be described with reference to FIG.
When removing the solid matter in the container 20 using the removing unit 33, as shown in FIG. 5, the shutter 21c is opened at the opening 20f of the inclined portion 20b, and the bottom surface 20d of the bottom portion 20c is opened. The pan 32 is arranged below 20d. In this state, the scraper 34 is rotated in the direction r opposite to the direction R in which the container 20 rotates, as shown in FIG. Thereby, the first solid matter 36 and the second solid matter 37 deposited on the inner wall 20g of the container 20 are scraped off, and the first solid matter 36 and the second solid matter 37 deposited on the inner wall 20g are separated. At the same time, it is removed from the container 20.

In the above-described processing method, the first solid matter 36 and the second solid matter 37 are removed at the same time, but the present invention is not limited to this, and they may be removed separately. For example, after the centrifugation is stopped, that is, between the third step and the fourth step, the second solid substance 37 deposited on the inner wall 20g of the container 20 is removed by the scraper 34 (see FIG. 1). Remove from 20. Thereafter, the container 20 is rotated again (fourth step), the first solid material 36 is removed from the keeper disk 23, and the first solid material 36 is deposited on the inner wall 20 g of the container 20. Thereafter, the first solid matter 36 is removed from the container 20 by a scraper 34 (see FIG. 1).
Even when the first solid matter 36 and the second solid matter 37 are separately removed as described above, since the developing fatigue liquid Qw is removed from the container 20 in a discharged state, the first solid matter 36 is removed. And the second solid substance 37 are removed in a state where the water content is low. Therefore, when the first solid material 36 and the second solid material 37 are discarded as solid waste, the amount of waste can be reduced.
The first solid matter 36 and the second solid matter 37 removed from the container 20 are then provided with a dehydration step to further reduce the water content and to be disposed of when discarded as solid waste. The amount can be reduced. As a dehydration step in this case, a vacuum type, a heating type, a pressure type, a centrifugal type, or the like can be used, but it is not limited thereto.

(6) Although the processing apparatus 12 has a configuration in which one scraper 34 is provided as shown in FIG. 6, the present invention is not limited to this. For example, a configuration having two scrapers 34 as shown in FIG. In this case, it is preferable to dispose the scrapers 34 diagonally from the viewpoint of removal efficiency. Further, although not shown, a configuration in which four scrapers 34 are provided may be employed. In this case, it is preferable from the viewpoint of removal efficiency that the scrapers 34 be arranged at regular intervals with respect to the central axis C, that is, at 90 ° intervals. Note that the scraper 34 is not limited to a flat plate that moves along the inner wall 20g.

Further, as the configuration of the removing unit 33, the scraper 34 is disposed in the container 20, but the present invention is not limited to this. The scraper 34 may be inserted into the container 20 when removing. When removing, the removing unit 33 for inserting the scraper 34 into the container 20 may be provided separately from the processing apparatus 12.
Further, in addition to the scraper 34, a means (not shown) for injecting compressed air to the inner wall 20g of the container 20 may be provided, and the compressed air may be ejected simultaneously with or before and after the solid material removing operation of the scraper 34.

In the processing device 12 described above, all three keeper disks 23 are provided. However, the configuration is not limited to this, and any configuration may be used as long as at least one keeper disk 60 is provided as shown in FIG. The keeper disk 60 is, for example, a disk having an opening 60a and a main body 60b. The main body 60b of the keeper disk 60 may be located at a position where the first solids 36 are accumulated by centrifugation. FIG. 8 shows only the container 20.
In FIG. 8, the keeper disk 60 is used, but the keeper disk 60 may be replaced with the disk-shaped keeper disk 23 having no opening shown in FIG.

Further, in the processing method of the developing fatigue liquid Qw described above, a step of reusing the developing fatigue liquid Qw discharged from the container 20 as a washing liquid, or the developing fatigue liquid Qw discharged from the container 20 may be used as a solid generated by development. There may be provided a step of passing through a separation membrane 30 (see FIG. 9) for removing substances and reusing it as a washing solution. As described above, it is preferable that the development fatigue liquid Qw be passed through the separation membrane 30 because the development fatigue liquid Qw can be used repeatedly.

The processing device is not limited to the above-described configuration, and may have another configuration. Hereinafter, another configuration of the processing device will be described.
FIG. 10 is a schematic diagram showing a processing system having a third example of the processing apparatus according to the embodiment of the present invention. In the processing system 10b shown in FIG. 10, the same components as those in the processing system 10 shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.
The processing system 10b shown in FIG. 10 stores the developing fatigue liquid Qw discharged from the container 20 and a part of the discharged developing fatigue liquid Qw in the container 20 as compared with the processing system 10 shown in FIG. The difference is that a storage tank 70 having a return supply unit 74 is provided, and that the developing fatigue solution Qw overflowing from the storage tank 70 is supplied to the defoaming tank 27 via a pipe 75. Is the same as the processing system 10 shown in FIG.

The storage tank 70 is provided at a lower part in the case 24. The configuration of the storage tank 70 is not particularly limited as long as it can store the developing fatigue solution Qw. For example, a tubular discharge path 21d is provided in the inclined portion 20b of the container 20, and the developing fatigue liquid Qw is discharged from the discharge path 21d to the storage tank 70. The discharge path is not limited to the discharge path 21d as long as the developer fatigue liquid Qw can be discharged into the storage tank 70. The developing fatigue liquid Qw in the container 20 overflows from the opening 21b of the container 20 during rotation, but is discharged to the storage tank 70 via the discharge path 21d when stopped. In the region on the shutter 21c side where the keeper disk 23 is not provided in the container 20, there is nothing holding the solid matter of the developing fatigue liquid Qw. Therefore, although the developing fatigue liquid Qw discharged from the discharge passage 21d to the storage tank 70 has a large solid content, the developing fatigue liquid Qw in the storage tank 70 is subjected to the centrifugal separation process again, so that the solid substance is recovered. The amount can be increased, and the solid-liquid separation property is improved.

A pipe 71 is provided in the storage tank 70, and the pipe 71 is connected to a pump 72. The pump 72 is provided with a pipe 73 for returning a part of the development fatigue solution Qw in the storage tank 70 to the inside of the container 20. In the pipe 73, similarly to the pipe 31, for example, an opening 73 a of the pipe 73 is arranged between the inside disk 22 and the uppermost keeper disk 23. The position of the opening 73a of the pipe 73 is not particularly limited as long as it is below the inside disk 22.
The pump 72 is connected to the control unit 38. The operation of the pump 72 is controlled by the control unit 38, and a part of the developing fatigue solution Qw in the storage tank 70 is returned to the container 20 via the pipe 71 and the pipe 73 by the pump 72.

In the processing system 10b shown in FIG. 10, as described above, by the same processing method as the processing system 10 shown in FIG. The second solid having a large specific gravity can be removed.
Further, in the processing system 10b shown in FIG. 10, in a state where the developing fatigue liquid Qw in the storage tank 70 is present, for example, the centrifugal separation process is performed at least once, and then the developing fatigue liquid Qw discharged from the container 20 is removed. The portion is returned to the container 20, and the container 20 is rotated to centrifuge the developing fatigue liquid Qw in the container 20, and the first solid matter 36 (see FIG. 3) is accumulated on the keeper disk 23. Is discharged from the container 20 through the discharge path 21d. Next, while the rotation of the container 20 is stopped in a state where the first solids 36 (see FIG. 3) accumulated on the keeper disk 23 are held by the keeper disk 23, the container 20 is rotated again. As a result, the first solids 36 are removed from the keeper disk 23, and the first solids 36 are deposited on the inner wall 20 g of the container 20. Thereafter, the first solid matter 36 (see FIG. 3) is removed from the container 20 by the scraper 34 (see FIG. 1). In this way, the developing fatigue solution Qw in the storage tank 70 remains in the container 20 including the developing fatigue solution Qw discharged from the container 20 after the centrifugal separation process is performed at least once, for example. A centrifugal separation process is performed together with the developing fatigue solution Qw and the like. Thereby, in the processing system 10b shown in FIG. 10, the first solid having a lower specific gravity than the rinsing liquid and the second solid having a higher specific gravity than the rinsing liquid can be removed.

FIG. 11 is a schematic diagram showing a processing system having a fourth example of the processing apparatus according to the embodiment of the present invention. In the processing system 10c illustrated in FIG. 11, the same components as those of the processing system 10c illustrated in FIG. 10 are denoted by the same reference numerals, and detailed description thereof will be omitted.
The processing system 10c shown in FIG. 11 is different from the processing system 10b shown in FIG. 10 in that the pipe 31 of the developing device 14 does not supply the developing fatigue liquid Qw into the container 20 but is connected to the defoaming tank 27. And a liquid sending section 84 for sending the developing fatigue liquid Qw in the defoaming tank 27 into the container 20. The other configuration is the same as the processing system 10b shown in FIG. .

The liquid sending section 84 has a pipe 81 provided in the defoaming tank 27, a pump 82 connected to the pipe 81, and a pipe 83 connected to the pump 82.
As for the pipe 83, for example, the opening 83 a of the pipe 83 is disposed between the inside disk 22 and the uppermost keeper disk 23, similarly to the pipe 31 of the processing system 10 shown in FIG. 1. The position of the opening 83a of the pipe 83 is not particularly limited as long as it is below the inside disk 22.
The pump 82 is connected to the control unit 38. The operation of the pump 82 is controlled by the control unit 38, and the developing fatigue liquid Qw in the defoaming tank 27 is sent into the container 20 via the pipes 81 and 83 by the pump 82.

In the processing system 10c shown in FIG. 11, the developing fatigue solution Qw is not directly supplied from the developing device 14 to the processing device 12, but is stored in the defoaming tank 27, and is then stored in the container 20 by the liquid sending section 84. It is sent. In the processing system 10c, there are a system of the defoaming tank 27, the developing device 14, and the defoaming tank 27, and a system of the defoaming tank 27, the processing device 12, and the defoaming tank 27, and these systems are operated independently of each other. be able to. Therefore, the processing device 12 can be operated to remove solid components from the developing fatigue liquid Qw without being affected by the operation cycle of the developing device 14. The processing system 10c has a higher degree of freedom in the operation of the processing device 12 than the processing system 10 illustrated in FIG. 1 and the processing system 10b illustrated in FIG.
Note that each of the processing system 10b in FIG. 10 and the processing system 10c in FIG. 11 may have a configuration having the separation membrane 30 shown in FIG.

In the processing system 10c shown in FIG. 11, as described above, by the same processing method as the processing system 10 shown in FIG. The second solid having a large specific gravity can be removed.
Further, in the processing system 10c illustrated in FIG. 11, the same processing method as the processing system 10b illustrated in FIG. 10 described above can be performed, and the centrifugal separation process is performed at least once, and then the development fatigue discharged from the container 20 is reduced. In the processing system 10b shown in FIG. 10, including the liquid Qw, the first solid having a lower specific gravity than the washing liquid and the second solid having a higher specific gravity than the washing liquid can be removed.

FIG. 12 is a schematic diagram showing a processing system having a processing device for comparison.
In the processing system 100 shown in FIG. 12, the same components as those of the processing system 10 shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.
The processing system 100 shown in FIG. 12 is different from the processing system 10 shown in FIG. 1 in that the processing device 102 is not provided with the keeper disk 23 (see FIG. 1). It is the same as the processing system 10 shown.

As shown in FIG. 12, in the processing apparatus 102 in which the keeper disk 23 is not provided, when the container 20 is rotated and centrifuged, the first solids 36 accumulate at a position corresponding to the mass due to the centrifugal force. . However, when the rotation of the container 20 is stopped, the first solids 36 accumulate on the inner surface 104 of the inclined portion 20b. In this state, when the developing fatigue solution Qw in the container 20 is discharged into the case 24 as in the processing method described above, the developing fatigue solution Qw discharged into the case 24 contains a large amount of the first solid matter 36, There is a concern that the solid content concentration of the fatigue fluid Qw will increase.
In addition, when the amount of deposition on the inner surface 104 of the inclined portion 20b is large, it takes time to remove it.

Hereinafter, the developing fatigue liquid will be described in detail.
<Development fatigue fluid>
The development fatigue solution to be processed by the processing method of the present invention is a washing solution containing solid matter generated by removing unexposed portions by development using a washing solution, that is, a washing solution containing an uncured resin. If there is, it is not particularly limited. However, a developing fatigue solution containing a conventionally known photosensitive resin composition for forming a general photosensitive resin layer can be treated.
In addition, since the processing method is preferably a processing fatigue developing solution when developed by a laser ablation masking (LAM) method, the uncured resin removed by the development is a photosensitive resin contained in the photosensitive resin composition. It is preferably a conductive resin.
In addition, such a photosensitive resin composition includes, in addition to the photosensitive resin, for example, a composition containing a polymerization initiator, a polymerizable compound, a polymerization inhibitor, a plasticizer, and the like. The developing fatigue liquid to be processed by the processing method of (1) may contain a polymerization initiator, a polymerizable compound, a polymerization inhibitor, a plasticizer, and the like in addition to the uncured resin.

<Uncured resin>
The uncured resin contained in the developing fatigue liquid is a solid generated by removing an unexposed portion. Examples of the uncured resin contained in the developing fatigue liquid include a water-dispersible latex, a rubber component, a polymer component, and an uncrosslinked ethylenically unsaturated compound (polymer).
Examples of the water-dispersible latex include polybutadiene latex, natural rubber latex, styrene-butadiene copolymer latex, acrylonitrile-butadiene copolymer latex, polychloroprene latex, polyisoprene latex, polyurethane latex, methyl methacrylate-butadiene copolymer latex, A water-dispersed latex polymer such as a water-dispersed latex such as vinylpyridine copolymer latex, butyl polymer latex, thiochol polymer latex, and acrylate polymer latex, or other components such as acrylic acid or methacrylic acid are added to these polymers. Examples include a polymer obtained by copolymerization.
Examples of the rubber component include butadiene rubber, isoprene rubber, styrene-butadiene rubber, acrylonitrile rubber, acrylonitrile butadiene rubber, chloroprene rubber, polyurethane rubber, silicone rubber, butyl rubber, ethylene-propylene rubber, and epichlorohydrin rubber.
The polymer component may be hydrophilic or hydrophobic, and specific examples include a polyamide resin, an unsaturated polyester resin, an acrylic resin, a polyurethane resin, a polyester resin, and a polyvinyl alcohol resin.
The solid having a lower specific gravity than the washing liquid is, for example, a photosensitive resin such as a rubber component and latex.
The solid matter having a higher specific gravity than the washing liquid is, for example, a component of the overcoat layer such as carbon.

Examples of the ethylenically unsaturated compound (polymer) include a (meth) acryl-modified polymer having an ethylenically unsaturated bond in a molecule.
Examples of the (meth) acryl-modified polymer include (meth) acryl-modified butadiene rubber and (meth) acryl-modified nitrile rubber.
“(Meth) acryl” is a notation representing acryl or methacryl, and “(meth) acrylate” described later is a notation representing acrylate or methacrylate.

未 The uncured resin contained in the developing fatigue liquid is not particularly limited, but is preferably 70% by mass or less, more preferably 35% by mass or less.

<Polymerization initiator>
The polymerization initiator that may be contained in the developing fatigue solution is preferably a photopolymerization initiator.
Examples of the photopolymerization initiator include, for example, alkylphenones, acetophenones, benzoin ethers, benzophenones, thioxanthones, anthraquinones, benzyls, and biacetyls, among which alkylphenones are preferable. .
Specific examples of the alkylphenone photopolymerization initiator include, for example, 2,2-dimethoxy-1,2-diphenylethan-1-one, 1-hydroxy-cyclohexyl-phenyl-ketone, and 2-hydroxy- 2-methyl-1-phenyl-propan-1-one and the like.

濃度 The concentration of the polymerization initiator that may be contained in the developing fatigue solution is not particularly limited, but is preferably 2.0% by mass or less, more preferably 1.0% by mass or less.

<Polymerizable compound>
Examples of the polymerizable compound that may be contained in the developing fatigue liquid include an ethylenically unsaturated compound corresponding to a so-called monomer component other than the above-mentioned ethylenically unsaturated compound (polymer).

The ethylenically unsaturated compound may be a compound having one ethylenically unsaturated bond or a compound having two or more ethylenically unsaturated bonds.

Specific examples of the compound having one ethylenically unsaturated bond include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, and 3-chloro-2. (Hydroxy) (meth) acrylate, (meth) acrylate having a hydroxyl group such as β-hydroxy-β ′-(meth) acryloyloxyethyl phthalate; methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, Alkyl (meth) acrylates such as butyl (meth) acrylate, isoamyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, and stearyl (meth) acrylate; cyclohexyl (meth) acrylate and the like Cycloalkyl (meth) acrylate; halogenated alkyl (meth) acrylate such as chloroethyl (meth) acrylate, chloropropyl (meth) acrylate; methoxyethyl (meth) acrylate, ethoxyethyl (meth) acrylate, butoxyethyl (meth) acrylate, and the like Alkoxyalkyl (meth) acrylates; phenoxyalkyl (meth) acrylates such as phenoxyethyl acrylate and nonylphenoxyethyl (meth) acrylate; ethoxydiethylene glycol (meth) acrylate, methoxytriethylene glycol (meth) acrylate, methoxydipropylene glycol ( Alkoxyalkylene glycol (meth) acrylates such as meth) acrylate; 2,2-dimethylaminoethyl (meth) acryle DOO, 2,2-diethylaminoethyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, and 3-chloro-2-hydroxypropyl (meth) acrylate.

Specific examples of the ethylenically unsaturated compound having two or more ethylenically unsaturated bonds include alkyldiol di (meth) acrylates such as 1,9-nonanediol di (meth) acrylate; diethylene glycol di (meth) acrylate Such as polyethylene glycol di (meth) acrylate; polypropylene glycol di (meth) acrylate such as dipropylene glycol di (meth) acrylate; trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, and pentaerythritol tetra (meth) acrylate. A) Acrylate, glycerol tri (meth) acrylate, ethylene glycol diglycidyl ether and a compound having an ethylenically unsaturated bond and active hydrogen such as unsaturated carboxylic acid or unsaturated alcohol A polyvalent (meth) acrylate obtained by the reaction; a polyvalent (meth) acrylate obtained by an addition reaction of an unsaturated epoxy compound such as glycidyl (meth) acrylate and a compound having active hydrogen such as a carboxylic acid or an amine; Polyvalent (meth) acrylamides such as methylenebis (meth) acrylamide; polyvalent vinyl compounds such as divinylbenzene; and the like.

(4) The concentration of the polymerizable compound that may be contained in the developing fatigue solution is not particularly limited, but is preferably 30.0% by mass or less, more preferably 15.0% by mass or less.

<Polymerization inhibitor>
Specific examples of the polymerization inhibitor which may be contained in the development fatigue solution include, for example, hydroquinone monomethyl ether, p-methoxyphenol, di-t-butyl-p-cresol, pyrogallol, t-butylcatechol, benzoquinone, 4,4'-thiobis (3-methyl-6-t-butylphenol), 2,2'-methylenebis (4-methyl-6-t-butylphenol), cerium N-nitrosophenylhydroxyamine, etc. .

(4) The concentration of the polymerization inhibitor that may be contained in the developing fatigue solution is not particularly limited, but is preferably 0.3% by mass or less, more preferably 0.15% by mass or less.

<Plasticizer>
Examples of the plasticizer that may be contained in the developing fatigue liquid include liquid rubber, oil, polyester, and a phosphoric acid compound.
Specific examples of the liquid rubber include liquid polybutadiene, liquid polyisoprene, and rubber modified with maleic acid or an epoxy group.
Specific examples of the oil include paraffin, naphthene and aroma.
Specific examples of the polyester include, for example, adipic acid-based polyester and the like.
Specific examples of the phosphoric acid compound include a phosphoric ester.

(4) The concentration of the plasticizer that may be contained in the developing fatigue solution is not particularly limited, but is preferably 30% by mass or less, and more preferably 15% by mass or less.

<Washing liquid>
The washing solution contained in the developing fatigue solution is preferably an aqueous washing solution, and may be a solution consisting only of water, or containing a water-soluble compound containing at least 50% by mass of water. Aqueous solution may be used. Examples of the compound soluble in water include a surfactant, an acid, and an alkali.

Examples of the surfactant include an anionic surfactant, a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant. Among them, an anionic surfactant is preferable.
Specific examples of the anionic surfactant include aliphatic carboxylate such as sodium laurate and sodium oleate; higher alcohol sulfate such as sodium lauryl sulfate, sodium cetyl sulfate and sodium oleyl sulfate; Polyoxyethylene alkyl ether sulfates such as sodium polyoxyethylene lauryl ether sulfate; polyoxyethylene alkyl allyl ether sulfates such as sodium polyoxyethylene octyl phenyl ether sulfate and sodium polyoxyethylene nonyl phenyl ether sulfate; Alkyl sulfonates such as alkyl diphenyl ether disulfonate, sodium dodecyl sulfonate, sodium dialkyl sulfosuccinate; Alkyl allyl sulfonates such as kildisulfonate, sodium dodecylbenzenesulfonate, sodium dibutylnaphthalenesulfonate and sodium triisopropylnaphthalenesulfonate; higher alcohol phosphoric acids such as disodium lauryl monoester disodium and sodium lauryl diester sodium Ester salts; polyoxyethylene alkyl ether phosphoric acid ester salts such as disodium polyoxyethylene lauryl ether phosphate monoester and sodium polyoxyethylene lauryl ether phosphate; and the like. These may be used alone or in combination of two or more. In addition, although the sodium salt is mentioned as a specific example, it is not particularly limited to the sodium salt, and the same effect can be obtained by a calcium salt, an ammonium salt, or the like.

Specific examples of the nonionic surfactant include polyoxyethylene alkyl ethers such as polyoxyethylene oleyl ether and polyoxyethylene lauryl ether, and polyoxyethylene nonyl phenyl ether and polyoxyethylene such as polyoxyethylene octyl phenyl ether. Mono- and diesters of fatty acids such as ethylene alkyl phenyl ether, polyoxyethylene polyoxypropylene glycols, polyethylene glycol monostearate or polyethylene glycol monooleate or polyethylene glycol dilaurate with polyethylene glycol, sorbitan monolaurate or sorbitan monooleate Esters of sorbitan with fatty acids such as, polyoxyethylene sorbitan monolaurate or Esters of polyoxyethylene adducts of sorbitan such as oxyethylene sorbitan monocitrate or polyoxyethylene sorbitan trilaurate with fatty acids, esters of fatty acids with sorbite such as sorbit monopartitate or sorbit dilaurate, polyoxy Esters of fatty acids such as ethylene sorbit monostearate or polyoxyethylene sorbite diolate and fatty acids, such as pentaerythritol monostearate, esters of pentaerythritol and fatty acids, glycerin monolaurate, etc. Esters of fatty acids with glycerin, fatty acid alkanolamides such as lauric acid diethanolamide or lauric acid monoethanolamide, lauryl dimethylamine Amine compounds such as side oxides, fatty acid alkanolamines such as stearyldiethanolamine, polyoxyethylene alkylamines, triethanolamine fatty acid esters, phosphates, carbonates, and salt compounds showing alkalinity such as silicates. . These may be used alone or in combination of two or more.

Specific examples of the cationic surfactant include primary, secondary and tertiary amine salts such as monostearyl ammonium chloride, distearyl ammonium chloride and tristearyl ammonium chloride, stearyl trimethylammonium chloride, distearyl dimethyl ammonium. Quaternary ammonium salts such as chloride, stearyldimethylbenzylammonium chloride, alkylpyridinium salts such as N-cetylpyridinium chloride or N-stearylpyridinium chloride, N, N-dialkylmorpholinium salts, fatty acid amide salts of polyethylenepolyamine, aminoethylethanol Acetates of urea compounds of amides of amines and stearic acid, 2-alkyl-1-hydroxyethylimidazolinium chloride Ido, and the like. These may be used alone or in combination of two or more.

Specific examples of the amphoteric surfactant include an amino acid type such as sodium laurylamine propionate, a carboxy betaine type such as lauryl dimethyl betaine or lauryl dihydroxyethyl betaine, and a sulfo acid such as stearyl dimethyl sulfoethylene ammonium ethylene ammonium betaine. Betaine type, imidazolinium betaine type, restin and the like. These may be used alone or in combination of two or more.

Specific examples of the acid include inorganic or organic acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, formic acid, acetic acid, oxalic acid, succinic acid, citric acid, malic acid, maleic acid, and paratoluenesulfonic acid. Is mentioned.
Specific examples of the alkali include lithium hydroxide, sodium hydroxide, magnesium hydroxide, potassium hydroxide, calcium hydroxide, calcium oxide, sodium carbonate, sodium hydrogen carbonate, calcium carbonate and the like.

The present invention is basically configured as described above. As described above, the processing method and the processing apparatus of the present invention have been described in detail. However, the present invention is not limited to the above embodiments, and various improvements or changes may be made without departing from the gist of the present invention. Of course.

Hereinafter, the features of the present invention will be described more specifically with reference to examples. Materials, reagents, substance amounts and their ratios, operations, and the like shown in the following examples can be appropriately changed without departing from the spirit of the present invention. Therefore, the scope of the present invention is not limited to the following examples.
In this example, processing was performed on the developing fatigue liquid having the processing amount shown in Table 1 below using the processing apparatuses of Examples 1 and 2 and Comparative Examples 1 and 2 shown below.
In Examples 1 and 2 and Comparative Examples 1 and 2, the amount of collected solids and the water content of the discharged solids were measured. The results of the amount of collected solids and the moisture content of the discharged solids are shown in Table 1 below.

The equipment and chemicals used to obtain the developing fatigue solutions processed in Examples 1 and 2 and Comparative Examples 1 and 2 are shown below.
<Imaging machine>
・ CDI Spark 4835 Inline (manufactured by ESKO)
<Exposure machine>
-UV exposure machine Concept 302 ECDLF (product name) (Glunz & Jensen)
<Developer>
・ SB-926 (manufactured by GS Trading)
<Photosensitive resin plate>
・ FLENEX FW-L (manufactured by FUJIFILM Global Graphic Systems)
<Washing liquid>
・ Finish Power & Pure Powder SP (manufactured by Rekit Benkeiser Japan) aqueous solution (concentration: 0.5% by mass) 200 liters <Centrifuge>
・ UB-S1 (Ameloid Japan Service Co., Ltd.)

<Preparation of developer fatigue solution> (Examples 1 and 2 and Comparative Examples 1 and 2)
The above-mentioned photosensitive resin plate was exposed from the back surface of the photosensitive resin plate with an energy of 80 W for 10 seconds using the above-mentioned ultraviolet exposure machine to perform back exposure. Thereafter, using the above-described imaging machine, imaging was performed by ablating the mask layer, and main exposure was performed by exposing from the front surface (back surface of the back surface) at 80 W for 1000 seconds.
The main-exposed photosensitive resin plate is developed with the above-mentioned washing solution and a washing machine SB-926 at 50 ° C. using a brush to remove unexposed portions, and a developing fatigue solution I got

<Method for measuring the amount of collected solids>
A fixed amount of the developing fatigue solution to be measured was placed in an aluminum container and dried at a temperature of 95 ° C. for 12 hours.
The mass of a certain amount of developing fatigue solution before drying and the mass after drying a certain amount of developing fatigue solution were measured. Then, the amount of solids was calculated based on the difference in mass before and after drying. This solid content was taken as the collected solid content. The results are shown in the column of the amount of collected solids (concentration: 100%) in Table 1 below.

<Method of measuring moisture content of discharged solid>
The dry weight method was used for the moisture content of the discharged solid. The sample was placed in a heating oven and dried. The moisture content after drying was set to 0%, and the moisture content was determined from the weight of the sample before and after drying. The results are shown in the column of moisture content (% by mass) of the discharged solid in Table 1 below.

Next, Examples 1 and 2 and Comparative Examples 1 and 2 will be described.
(Example 1)
In Example 1, the above-mentioned developing fatigue solution was processed using the processing apparatus having the configuration shown in FIG. In Example 1, the operation of stopping the supply of the developing fatigue solution to the rotating container, continuing the rotation of the container for a certain period of time (3 minutes), and then stopping the rotation of the container was performed. This operation is called a first operation. In addition, a scraper and a compressed air jet were used for removing solid matter in the container.
In "2500 rpm 5 L / min" shown in the column of centrifugation in Table 1 below, "2500 rpm" indicates the number of revolutions at the time of centrifugation. “5 L / min (liter / min)” indicates a flow rate at which the developing fatigue solution is sent to the centrifuge.
The processing amount shown in Table 1 below indicates how many square meters (m ² ) of the photosensitive resin plate has been developed, and indicates the total area (m ² ) of the developed photosensitive resin plate. .
(Example 2)
The second embodiment is different from the first embodiment in that processing is performed using the processing apparatus having the configuration shown in FIG. 10 and that the second operation is performed in addition to the first operation. Was the same as in Example 1.
The second operation is an operation of returning a part of the developing fatigue liquid in the storage tank to the container while rotating the container, and then performing centrifugal separation together with the developing fatigue liquid stored in the container.
In the second embodiment, the amount of collected solids is obtained by the first operation and the second operation.

(Comparative Example 1)
Comparative Example 1 is different from Example 1 in that a processing apparatus without the keeper disk having the configuration shown in FIG. 12 was used and that the container was not rotated again after centrifugation. Same as Example 1.
(Comparative Example 2)
Comparative Example 2 was the same as Comparative Example 1 except that the processing amount was different from that of Comparative Example 1.

As shown in Table 1, in Examples 1 and 2, compared with Comparative Examples 1 and 2, the amount of collected solids was large, and the water content of the discharged solids could be reduced.
Even when Examples 1 and 2 and Comparative Example 2 having the same treatment amount were compared, Examples 1 and 2 showed a larger amount of collected solids.
From Examples 1 and 2, Example 2 was able to recover a larger amount of solids than Example 1 by treating the discharged developer fatigue solution again.

10, 10a, 10b, 10c, 100 Processing system 12, 102 Processing device 14 Developing device 20 Container 20a Body 20b Inclined portion 20c Bottom 20d Bottom surface 20e Opening 20f Opening 20g Inner wall 21a Cover 21b Opening 21d Drain 21c Shutter 22 Inside Disk 22a Opening 23, 60 Keeper disk 24 Case 25 Discharge path 26 Drive unit 27 Defoaming tank 28, 31 Piping 29 Pump 30 Separation membrane 31a Opening 32 Receiving tray 33 Removing unit 34 Scraper 35a Drive shaft 35b Drive gear 35c Follower gear 36 First Of solid 37 Second solid 38 Control part 40 Developing tank 42 Brush 43 Drive member 44 Supply pipe 46 Supply part 47 Valve 50 Photosensitive resin plate 50a Surface 60a Opening 60b Body part 70 Storage tank 71, 73 72 and 82 pumps 73a, 83a opening 74 supplying portions 75,81,83 pipe 84 feeding portion 104 inner surface C central axis Q washout solution Qw developer fatigued solution R direction r direction

Claims (9)

1. A processing method for removing the solid matter, with respect to a developing fatigue liquid containing a solid matter generated by removing an unexposed portion of the photosensitive resin plate after imagewise exposure by development using a washout liquid, ,
   While supplying the developing fatigue solution into the container, rotating the container, centrifuging the solids contained in the developing fatigue solution,
   Thereafter, the supply of the developing fatigue solution is stopped, and after the rotation of the container is continued for a predetermined time, the rotation of the container is stopped.
2. By the development using the washing liquid, the first fatigue having a specific gravity smaller than that of the washing liquid is used for the developing fatigue liquid containing solid matter generated by removing the unexposed portion of the photosensitive resin plate after imagewise exposure. A processing method for removing a solid and a second solid having a specific gravity greater than that of the washing liquid,
   Supplying the developing fatigue solution into a rotating container, centrifuging the first solid material and the second solid material contained in the developing fatigue solution, and removing the second solid material from the inner wall of the container; A first step of accumulating the first solid matter on a holding member provided in the container;
   A second step of stopping the supply of the developing fatigue solution to the rotating container and continuing to rotate the container for a predetermined time;
   A third step of stopping the rotation of the container while the first solid is held by the holding member;
   The method according to claim 1, further comprising: a fourth step of rotating the container to remove the first solid held by the holding member from the holding member.
3. After the fourth step, a part of the developing fatigue solution discharged from the container is returned to the container, and the container is rotated to centrifuge the developing fatigue solution in the container, and the first After the solid matter is accumulated on the holding member, the developing fatigue solution in the container is discharged from the container,
   Next, after stopping the rotation of the container while the first solid matter accumulated on the holding member is held by the holding member, the container is rotated again. Processing method.
4. 4. The processing method according to claim 2, further comprising, after the fourth step, a step of simultaneously removing the first solid and the second solid from the container.
5. (5) The processing method according to any one of (2) to (4), further comprising a step of reusing the developing fatigue solution discharged from the container as the washing solution.
6. A container having an opening, storing a development fatigue solution containing a solid matter generated by removing an unexposed portion of the photosensitive resin plate after imagewise exposure by development using a washing liquid,
   A first solid that has a lower specific gravity than the wash liquid by rotating the container, and a second solid that has a higher specific gravity than the wash liquid, and a driving unit that centrifugally separates the second solid within the container.
   A regulating member provided in the container, and facing the opening, for retaining the first solid substance in the container;
   In the container, and on the opposite side to the opening with respect to the regulating member, at least one provided, a holding member for holding the first solid matter accumulated by the centrifugation,
   The drive unit rotates the container in which the developing fatigue liquid is stored, centrifugally separates the liquid, accumulates the first solid matter on the holding member, and supplies the developing fatigue liquid to the rotating container. Is stopped, and the rotation of the container is continued for a certain period of time. Further, in a state where the first solid matter accumulated on the holding member is held by the holding member, the container is driven by the driving unit. And a control unit for rotating the container again by the driving unit after stopping the rotation of the processing unit.
7. A storage tank having a supply unit for storing the developing fatigue liquid discharged from the container and returning a part of the discharged developing fatigue liquid to the container,
   By the supply unit, after returning a part of the developing fatigue solution discharged from the container to the container,
   The control unit is configured to rotate the container by the driving unit to centrifuge the developing fatigue solution in the container, and to accumulate the first solid matter in the holding member. Draining the developer fatigue solution from the container;
   Next, after the rotation of the container by the driving unit is stopped in a state where the first solid matter accumulated on the holding member is held by the holding member, the container is again rotated by the driving unit. The processing apparatus according to claim 6, wherein the processing is performed.
8. 8. The processing apparatus according to claim 6, further comprising a removing unit configured to remove the first solid and the second solid present in the container from the container. 9.
9. The processing apparatus according to any one of claims 6 to 8, further comprising a circulation unit for reusing the developing fatigue solution discharged from the container as the washing solution.

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