WO2019225623A1 - Liquid-feeding member, and development processing device for lithographic printing plate preparation - Google Patents

Abstract

A liquid-feeding member comprising a feeding means A used for feeding a liquid, the feeding means A assuming the form of a hollow rod closed at both ends, having a liquid-feeding port A-1 on a side surface part, and having a plurality of liquid discharge ports A-2 in the width direction on a side surface part. A development processing device for lithographic printing plate preparation provided with the liquid-feeding member.

Description

Liquid supply member and development processing apparatus for producing a lithographic printing plate

The present disclosure relates to a liquid supply member and a development processing apparatus for preparing a lithographic printing plate.

In general, a lithographic printing plate is composed of an oleophilic image portion that receives ink in the printing process and a hydrophilic non-image portion that receives dampening water.
Lithographic printing utilizes the property that water and oil-based ink repel each other, so that the oleophilic image area of the lithographic printing plate is dampened with the ink receiving area and the hydrophilic non-image area is dampened with the water receiving area (ink non-receiving area). ), A difference in ink adhesion is caused on the surface of the lithographic printing plate, the ink is applied only to the image area, and then the ink is transferred to a printing medium such as paper for printing.

At present, in a plate making process for producing a lithographic printing plate from a lithographic printing plate precursor, image exposure is performed by CTP (computer to plate) technology. That is, the image exposure is performed by scanning exposure or the like directly on the lithographic printing plate precursor using a laser, a laser diode or the like without using a lith film.

As conventional development processing apparatuses, those described in International Publication No. 2017/157570 or Japanese Patent Application Laid-Open No. 2005-258281 are known.

In a conventional development processing apparatus for preparing a lithographic printing plate, a liquid such as a developing solution, a gum solution, or a cleaning solution may be supplied using a liquid supply member also called a spray pipe.
As such a liquid supply member, for example, a cylindrical member having a plurality of discharge ports on the side surface portion, one bottom surface portion is closed (that is, one bottom surface portion becomes a closed portion), Another bottom surface portion is opened (that is, another bottom surface portion becomes an opening portion), and a member is used in which liquid is supplied from the opening portion and liquid is discharged from a plurality of discharge ports. .
As a result of intensive studies, the present inventors, when discharging liquid from a plurality of discharge ports using such a member, among the plurality of discharge ports, around the discharge port on the side close to the opening, It has been found that there is a case where liquid splash of the discharged liquid occurs.
Due to the occurrence of such liquid splash, the inside of the development processing apparatus for preparing a lithographic printing plate is contaminated by the liquid. Rotation failure, contact failure between the roller-shaped member and other members, and the like may occur.

The problem to be solved by the embodiment according to the present disclosure is to provide a liquid supply member in which generation of liquid splash is suppressed, and a development processing apparatus for preparing a lithographic printing plate including the liquid supply member. .

Means for solving the above problems include the following aspects.
<1> It has a hollow rod shape with both ends closed, has a liquid supply port A-1 on the side surface, and has a plurality of liquid discharge ports A-2 on the side surface in the width direction. A liquid supply member comprising supply means A used for supplying the liquid.
<2> The liquid supply member according to <1>, further including supply means B for supplying liquid to the supply means A.
<3> The supply means B has a hollow rod shape with one end closed and the other end open, and has a liquid discharge port B-1 on the side surface, and the liquid discharge port B- The liquid supply member according to <2>, wherein the liquid is supplied from 1 to the liquid supply port A-1.
<4> The supply means A has a cylindrical shape with both ends closed, the supply means B has a cylindrical shape with one end closed and the other end open, and the supply means A The liquid supply member according to <3>, wherein the liquid supply port A-1 is connected to the liquid discharge port B-1 of the supply unit B.
<5> In the above <3>, the supply means A and the supply means B are formed in the cylindrical member by partitioning the inside of one cylindrical member with a partition member having a through hole. The member for liquid supply as described.
<6> In the above <5>, the partition member is a plate-like member, and at least one surface of the plate-like member is a member provided horizontally with respect to the central axis of the cylindrical member. The member for liquid supply as described.
<7> The partition member is a plate-like member, and at least one surface of the plate-like member is provided to be inclined with respect to the central axis of the cylindrical member. The liquid supply member according to <5>, wherein an area of the opened opening on the terminal side is larger than an area of the closed port on the terminal side of the supply unit B.
<8> Cylindrical shape with one end closed and the other end open, and having a plurality of liquid discharge ports A-2 in the side surface in the width direction, and supplying means A for supplying liquid Prepared,
The inner diameter of the supply means A at the position of the liquid discharge port A-2 closest to the opened end side is 20 mm or more;
Liquid supply member.
<9> The liquid supply member according to any one of <1> to <8>, which is a gum solution supply member.
<10> The liquid supply member according to any one of <1> to <9>, which is used in a development processing apparatus for preparing a lithographic printing plate.
<11> The liquid supply member according to any one of <1> to <10>, which is used to supply a liquid to a roller.
<12> A development processing apparatus for preparing a lithographic printing plate, comprising the liquid supply member according to any one of the above items <1> to <11>.
<13> Development section;
A gum processing part continuous with the development part,
The development processing apparatus for preparing a lithographic printing plate according to <12>, wherein the gum processing unit includes a transport roller and the liquid supply member that supplies a gum solution to the transport roller.

According to the embodiment according to the present disclosure, it is possible to provide a liquid supply member in which the occurrence of liquid splash is suppressed, and a lithographic printing plate preparation development processing apparatus including the liquid supply member.

FIG. 1 is a schematic diagram illustrating an example of a liquid supply member including a supply unit A according to the present disclosure. FIG. 2 is a schematic view showing an AA cross-sectional view of the supply means A in FIG. FIG. 3 is a schematic diagram illustrating an example of a liquid supply member including the supply unit A and the supply unit B according to the present disclosure. FIG. 4 is a schematic view showing a BB cross-sectional view of the liquid supply means in FIG. FIG. 5 is a schematic diagram illustrating another example of the liquid supply member including the supply unit A and the supply unit B according to the present disclosure. FIG. 6 is a schematic view showing a CC cross-sectional view of the liquid supply member in FIG. FIG. 7 is a schematic view showing an example of a DD cross-sectional view of the liquid supply member in FIG. FIG. 8 is a schematic view showing another example of the DD cross-sectional view of the liquid supply member in FIG. FIG. 9 is a schematic diagram illustrating an example of a second aspect of the liquid supply member including the supply unit A according to the present disclosure. FIG. 10 is a schematic diagram showing an EE cross-sectional view of the liquid supply means in FIG. FIG. 11 is a schematic diagram illustrating another example of the second aspect of the liquid supply member according to the present disclosure. FIG. 12 is a schematic cross-sectional view showing an example of a development processing apparatus for preparing a lithographic printing plate according to this embodiment.

Hereinafter, the contents of the present disclosure will be described in detail. The description of the constituent elements described below may be made based on typical embodiments of the present disclosure, but the present disclosure is not limited to such embodiments.
In the present disclosure, the components indicated by the same reference numerals in the drawings mean the same components. Moreover, in each figure, some codes | symbols may be abbreviate | omitted from the relationship which makes drawing easy to see.
In the present disclosure, “to” indicating a numerical range is used in a sense including numerical values described before and after the numerical value as a lower limit value and an upper limit value.
In the numerical ranges described stepwise in the present disclosure, the upper limit value or the lower limit value described in one numerical range may be replaced with the upper limit value or the lower limit value of another numerical description. . Further, in the numerical ranges described in the present disclosure, the upper limit value or the lower limit value of the numerical range may be replaced with the values shown in the examples.
In addition, in the notation of groups (atomic groups) in the present disclosure, the notation not describing substitution and non-substitution includes those having no substituent and those having a substituent. For example, the “alkyl group” includes not only an alkyl group having no substituent (unsubstituted alkyl group) but also an alkyl group having a substituent (substituted alkyl group).
In the present disclosure, “(meth) acryl” is a term used in a concept including both acryl and methacryl, and “(meth) acryloyl” is a term used in a concept including both acryloyl and methacryloyl. is there.
In addition, the term “process” in the present disclosure is not limited to an independent process, and even if it cannot be clearly distinguished from other processes, it is included in this term if the intended purpose of the process is achieved. It is.
In the present disclosure, “mass%” and “wt%” are synonymous, and “part by mass” and “part by weight” are synonymous.
Furthermore, in the present disclosure, a combination of two or more preferred embodiments is a more preferred embodiment.
In addition, the weight average molecular weight (Mw) and number average molecular weight (Mn) in the present disclosure use columns of TSKgel GMHxL, TSKgel G4000HxL, and TSKgel G2000HxL (all trade names manufactured by Tosoh Corporation) unless otherwise specified. The molecular weight was detected by a gel permeation chromatography (GPC) analyzer using a THF (tetrahydrofuran) solvent and a differential refractometer, and converted using polystyrene as a standard substance.
In the present disclosure, the term “lithographic printing plate precursor” includes not only a lithographic printing plate precursor but also a discarded plate precursor. Further, the term “lithographic printing plate” includes not only a lithographic printing plate prepared by subjecting a lithographic printing plate precursor to operations such as exposure and development, but also a discarded plate. In the case of a discarded original plate, exposure and development operations are not necessarily required. The discarded plate is a lithographic printing plate precursor to be attached to a plate cylinder that is not used, for example, when printing a part of paper in single color or two colors in color newspaper printing.
Hereinafter, the present disclosure will be described in detail.

(Liquid supply member)
A first aspect of the liquid supply member according to the present disclosure is a hollow rod shape with both ends closed, and has a liquid supply port A-1 on a side surface portion and a plurality of liquid discharge ports A in the width direction. -2 is provided on the side surface, and a supply means A used for supplying the liquid is provided.
Further, the second aspect of the liquid supply member according to the present disclosure has a cylindrical shape in which one end is closed and the other end is opened, and a plurality of liquid discharge ports A-2 are provided in the width direction. The supply means A is provided on the side surface and supplies the liquid, and the inner diameter of the supply means A at the position of the liquid supply port A-1 closest to the opened end side is 20 mm or more.
The width direction of the rod-shaped member in the present disclosure refers to the length direction of the rod-shaped member. For example, when the rod-shaped member is a cylindrical member, it refers to the axial direction of the cylindrical member.

As described above, when a conventionally used liquid supply member is used, liquid splash may occur.
As a result of intensive studies by the inventors, among the plurality of discharge ports formed in the liquid supply member, the pressure applied to the discharge liquid is high at the discharge port close to the supply port that supplies the liquid to the liquid supply member. It became clear. As described above, when the discharged liquid is discharged in a state where a high pressure is applied, it is considered that liquid discharge occurs because the discharged discharged liquid contacts the target object in a state having high energy.
Therefore, the present inventors have found that it is possible to suppress the occurrence of liquid splash by reducing the pressure applied to the discharge liquid at the discharge port close to the supply port for supplying the liquid to the liquid supply member. The liquid supply member according to the present disclosure has been completed.
As a mechanism for obtaining the above effect, the supply means A supplies the liquid supply port (the liquid supply port A-1) for supplying the liquid to the liquid supply member on the hollow rod-shaped side portion closed at both ends. The supply means A has a cylindrical shape in which one end is closed and another one end is opened, and the supply means in the position of the liquid discharge port A-2 closest to the opened end side It is presumed that when the inner diameter of A is 20 mm or more, the energy of the discharged liquid discharged from the liquid discharge port A-2 is reduced, and liquid splash is suppressed.

Further, the type of liquid supplied by the apparatus using the liquid supply member according to the present disclosure and the liquid supply member is not particularly limited. As an example, the liquid supply member according to the present disclosure is used as a liquid supply member used for supplying water, a gum solution, a cleaning solution, and the like used in a development processing apparatus for preparing a lithographic printing plate.
If it is normal, it is considered that the pressure in the discharge part is likely to rise particularly when a liquid having a high viscosity is supplied by the liquid supply member. However, according to the liquid supply member according to the present disclosure, liquid splash is easily suppressed even when a liquid having a relatively high viscosity is discharged. Therefore, the liquid supply member according to the present disclosure is preferably used as a gum solution supply member.
Further, the liquid supply member according to the present disclosure is preferably a liquid supply member used in a development processing apparatus for preparing a lithographic printing plate.

Moreover, the aspect in which the liquid supply member according to the present disclosure is used is not particularly limited. As an example, the liquid supply member according to the present disclosure is preferably used for supplying a liquid to a roller.
By suppressing liquid splash when liquid is supplied to the roller, for example, it is possible to suppress the liquid supplied from adhering to the shaft portion that fixes the roller. Or it is thought that it becomes possible to suppress the poor contact between a roller and another member.
The roller is preferably a roller in a development processing apparatus for preparing a lithographic printing plate, and more preferably a roller used for applying a gum solution in a development processing apparatus for preparing a lithographic printing plate.

Hereinafter, details of the liquid supply member according to the present disclosure will be described with reference to the drawings. However, the liquid supply member according to the present disclosure is not limited to the description according to the drawings. In the following description, reference numerals may be omitted.
First, the first aspect of the liquid supply member will be described.

<First aspect>
[Supply means A]
FIG. 1 is a schematic diagram illustrating an example of a liquid supply member 200 including a supply unit A 110 according to the present disclosure.
The supply means A 110 has a hollow rod shape with both ends closed, and has a liquid supply port A-1 112 on the side surface and a plurality of liquid discharge ports A-2 114 on the side surface in the width direction. .
For example, in the development processing apparatus for preparing a lithographic printing plate, the liquid discharged from the liquid discharge port A-2 114 in the supply unit A 110 to the outside of the supply unit A is used in contact with, for example, a transport roller.
The amount of liquid supplied to the supply means A may be set as appropriate according to the inner diameter of the supply means A, the type of liquid, the length of the supply means in the width direction, and the like.

-Shape, material-
The shape of the supply means A 110 is not particularly limited as long as it is a hollow rod shape with both ends closed, but it is preferably a cylindrical shape with both ends closed. That is, it is preferable that the supply means A 110 is a hollow rod-like object having both ends closed and a cylinder having both ends closed.
The cross-sectional shape of the hollow portion in the hollow rod-shaped object is not particularly limited, and examples thereof include a circular shape, a semicircular shape, an elliptical shape, a polygonal shape, and other shapes. The shape is preferred.
In the present disclosure, the semicircular shape is represented by one of two regions in a circular shape or an elliptical shape formed by connecting arbitrary two points on the circumference in a circular shape or an elliptical shape with a straight line. It does not indicate only a so-called regular semicircle (a semicircle formed when the straight line passes through the center of the perfect circle).
The inner diameter of the supply means A 110 is preferably 3 mm to 40 mm, and more preferably 9 mm to 19 mm.
The outer diameter of the supply means A 110 is preferably 4 mm to 46 mm, and more preferably 10 mm to 25 mm.
In the present disclosure, diameters such as an inner diameter, an outer diameter, and a diameter are obtained as equivalent circle diameters when the cross section is not circular. The equivalent circle diameter refers to the diameter of a circle having an area equal to the cross-sectional area.
The length in the width direction of the supply means A 110 is preferably 700 mm to 2,500 mm, and more preferably 830 mm to 2,400 mm.
The ratio of the inner diameter (mm) of the supply means A 100 to the length (mm) in the width direction (inner diameter / length value in the width direction) is preferably 0.001 to 0.057, preferably 0.003. More preferably, it is ˜0.036.
In supply means A110, both ends should just be closed with a rubber stopper etc., for example. The method for closing the end is not particularly limited.
The material forming the supply unit A 110 is not particularly limited, and examples thereof include metals such as stainless steel, rubber, and resins.
The supply means A 110 is produced, for example, by forming through holes respectively corresponding to a liquid supply port A-1 (to be described later) and a liquid discharge port A-2 (to be described later) on a side surface portion of a cylindrical pipe made of stainless steel. It is possible.

-Liquid supply port A-1-
The liquid supply port A-1 112 in the supply unit A 110 is a through-hole that communicates the inside of the supply unit A 110 that is hollow (that is, the gap forming the hollow portion) and the outside of the supply unit A 110, Liquid is supplied from the outside into the supply means A 110 through the liquid supply port A-1 112.
The liquid supply port A-1 112 may be single or plural.
The shape of the liquid supply port A-1 112 is not particularly limited, but is preferably circular from the viewpoint of suitability for manufacturing. Further, when the supply means A 110 has a plurality of liquid supply ports A-1 112, the shapes of the plurality of liquid supply ports A-1 112 may be the same or different from each other. From the viewpoint, they are preferably the same.
The diameter (in equivalent circle diameter) of the liquid supply port A-1 112 is not particularly limited, but is preferably 1 mm to 20 mm, and more preferably 4 mm to 10 mm. Further, when the supply means A110 has a plurality of liquid supply ports A-1 112, the shapes of the plurality of liquid supply ports A-1 112 may be the same or different from each other. Are preferably the same.
When the supply means A 110 has a plurality of liquid supply ports A-1 112, the circumferential positions of the plurality of liquid supply ports A-1 112 are not particularly limited, but from the viewpoint of facilitating liquid supply. The plurality of liquid supply ports A-1 112 are preferably aligned in a direction parallel to the axial direction of the supply means A110.
The position in the width direction of the liquid supply port A-1 112 is not particularly limited.
Further, from the viewpoint of suppressing liquid splash, when the liquid supply member 200 includes a supply unit B described later, the area of the liquid supply port A-1 112 (the supply unit A 110 includes a plurality of liquid supply ports A-1 112). The total area of all the liquid supply ports A-1 112) is preferably the same as or larger than the area of the opening 126 in the supply means B described later.

-Liquid discharge port A-2-
The liquid discharge port A-2 114 in the supply unit A 110 is a through hole that communicates the inside of the supply unit A 110 with the outside of the supply unit A 110, and passes through the liquid discharge port A-2 114 from the supply unit A 110. Liquid is discharged outside.
The supply unit A 110 includes a plurality of liquid discharge ports A-2 114 in the width direction.
The shape of the liquid discharge port A-2 114 is not particularly limited, but is preferably a circular shape from the viewpoint of manufacturing suitability. The shapes of the plurality of liquid discharge ports A-2 114 may be the same or different from each other, but are preferably the same from the viewpoint of manufacturing suitability.
The number of the liquid discharge ports A-2 114 is not particularly limited, and may be determined in consideration of the application and the arrangement of each member in the apparatus. The number is preferably 3 to 250, and preferably 20 to More preferably, the number is 100.
The interval between the plurality of liquid discharge ports A-2 114 is not particularly limited, but may be, for example, equal intervals.
The diameter (in the equivalent circle diameter) of the liquid discharge port A-2 114 is not particularly limited, but is preferably 1 mm to 6 mm, and more preferably 1.5 mm to 4 mm. Further, the diameters of the plurality of liquid discharge ports A-2 114 may be the same or different, but are preferably the same from the viewpoint of suitability for manufacturing.
The supply unit A 110 has a plurality of liquid discharge ports A-2 114 in the width direction, but the circumferential position of the plurality of liquid discharge ports A-2 114 is not particularly limited, and the plurality of liquid discharge ports A-2 114 are not limited. -2 114 is preferably aligned in a direction parallel to the axial direction of supply means A.

FIG. 2 is a schematic view showing an AA cross-sectional view of the supply means A 110 in FIG.
The AA sectional view in FIG. 2 is a sectional view perpendicular to the axial direction of the supply means A 110 having a cylindrical shape with both ends closed.
The arrangement of the liquid supply port A-1 112 and the liquid discharge port A-2 114 in the circumferential direction is not particularly limited, and the arrangement relationship between the liquid to be discharged, the application, and each member in the apparatus is taken into consideration. Should be designed. For example, as shown in FIG. 2, a line connecting the center of the supply unit A and the center of the liquid supply port A-1 112 and a line connecting the center of the supply unit A and the center of the liquid discharge port A-2 114 Is preferably 30 ° to 180 °, and more preferably 90 ° to 160 °.

[Supply means B]
The liquid supply member according to the present disclosure preferably further includes supply means B for supplying a liquid to the supply means A.
The supply means B has a hollow rod shape with one end closed and the other end open, and has a liquid discharge port B-1 on the side surface, and the liquid discharge port B-1 The liquid is preferably supplied from the liquid supply port A-1.

FIG. 3 is a schematic diagram illustrating an example of the liquid supply member 200 including the supply unit A 110 and the supply unit B 120 according to the present disclosure.
In the liquid supply member 200 shown in FIG. 3, the liquid supplied into the supply means B 120 through the opening 126 is a joint between the liquid discharge port B-1 122 and the liquid supply port A-1 112. It is supplied into the supply means A 110 through the part 130. The liquid supplied to the inside of the supply means A 110 is discharged to the outside from the liquid discharge port A-2 114.

-Shape, material-
The shape of the supply means B 120 is not particularly limited as long as one end 124 (closed portion) is closed and one end 126 (opening) is opened.
In the liquid supply member 200 shown in FIG. 3, the supply means B 120 has one end 124 closed to form a closed portion (ie, the closed portion 124), and one end 126 opened to open (ie, the opening 126). This is a cylindrical object. An example of a mode in which the supply unit B 120 is not cylindrical will be described later.
The inner diameter of the supply means B 120 is preferably 3 mm to 40 mm, and more preferably 9 mm to 19 mm.
The outer diameter of the supply means B 120 is preferably 4 mm to 46 mm, and more preferably 10 mm to 25 mm.
When the supply unit B 120 is not cylindrical, the inner diameter and the outer diameter are obtained as the equivalent circle diameter of the cross section.
The length in the width direction of the supply means B 120 is preferably 700 mm to 2,500 mm, and more preferably 830 mm to 2,400 mm.
In the supply unit B 120, one end 124 may be closed with, for example, a rubber stopper. The method for closing the end is not particularly limited.
The material for forming the supply unit B 120 is not particularly limited, and examples thereof include metals such as stainless steel, rubber, and resin.
The supply unit B 120 can be manufactured, for example, by forming a through hole corresponding to a liquid discharge port B-1 described later on a side surface portion of a cylindrical pipe made of stainless steel.

-Aperture-
In the liquid supply member 200 according to the present disclosure, the liquid is supplied into the supply unit B 120 through the opening 126 in the supply unit B 120.
The shape of the opening 126 is not particularly limited, and examples thereof include a circular shape, a semicircular shape, an elliptical shape, a polygonal shape, and other shapes. From the viewpoint of manufacturing aptitude, a circular shape is preferable. .
In the liquid supply member 200 shown in FIG. 3, the opening 126 has a circular shape. An example of a mode in the case where the opening 126 has a semicircular shape will be described later.
Although the cross-sectional area of the opening 126 is not particularly ^limited, it is preferably from 0.07 cm 2 ~ 12.5 cm ^2, more preferably 0.63cm ² ~ 2.83cm 2.

-Liquid discharge port B-1-
The liquid discharge port B-1 122 in the supply unit B is a through hole that communicates the inside of the hollow supply unit B 120 (a space forming a hollow portion) and the outside of the supply unit B 120. Liquid is supplied to the liquid supply port A-1 112 through the discharge port B-1 122.
The liquid discharge port B-1 122 and the liquid supply port A-1 112 are preferably connected.
In the liquid supply member 200 shown in FIG. 3, the liquid discharge port B-1 122 and the liquid supply port A-1 112 are directly connected at the joint 130, but the liquid discharge port B-1 122 The liquid supply port A-1 112 may be connected via a member such as an O-ring.
The diameter, number, and position of the liquid discharge port B-1 122 may be designed in consideration of the ease of connection with the liquid supply port A-1 112 and the like. It is preferable that the same diameter, the same number, and a position where the liquid supply port A-1 112 can be joined.
Further, from the viewpoint of suppressing liquid splash, the area of the liquid discharge port B-1 122 (when the supply means B 120 has a plurality of liquid discharge ports B-1 122, the total of all the liquid discharge ports B-1 122 is used. The area) is preferably the same as the area of the opening 126 described above or larger than the area of the opening 126.

FIG. 4 is a schematic view showing a BB cross-sectional view of the liquid supply means 200 in FIG.
The BB cross-sectional view in FIG. 4 is a cross-sectional view in a direction perpendicular to the axial direction of the supply means A that is cylindrical with both ends closed.
In the liquid supply member 200 shown in FIG. 4, the liquid supply port A-1 112 in the supply unit A 110 and the liquid discharge port B-1 122 in the supply unit B 120 are directly connected at the connection portion 130.
In the liquid supply member 200 shown in FIG. 4, the liquid supply port A-1 112 and the liquid discharge port B-1 122 are formed with the same diameter, but the diameter of the liquid supply port A-1 112 is the same. The liquid supply member 200 according to the present disclosure is not limited to FIG. 4, and may be formed to be larger than the diameter of the liquid discharge port B- 1 122.

[Preferred embodiment]
In a preferred aspect of the liquid supply member, in the liquid supply member, the supply means A has a cylindrical shape with both ends closed, and the supply means B has one end closed and the other end closed. The liquid supply port A-1 in the supply unit A is connected to the liquid discharge port B-1 in the supply unit B.
An example of the preferred embodiment is as shown in FIGS. 3 and 4, but the preferred embodiment is not limited to the embodiment described in FIGS. 3 and 4.

[Another preferred embodiment]
In another preferred embodiment of the liquid supply member, the supply means A and the supply means B are formed on the cylindrical member by partitioning the inside of one cylindrical member with a partition member having a through hole. It is the aspect which is.
According to another preferable aspect, for example, there is an advantage that the liquid supply member according to the present disclosure can be used without increasing the number of pipes in the apparatus.
Hereinafter, an example of the other preferable mode will be described with reference to FIGS. 5 to 8. However, the other preferable mode is not limited to the mode described in FIGS.

FIG. 5 is a schematic diagram illustrating another example of the liquid supply member 200 including the supply unit A and the supply unit B according to the present disclosure.
In the liquid supply member 200 shown in FIG. 5, the inside of the cylindrical member 150 is partitioned by a partition member 128 having a through hole, and the supply means A and the supply means B are formed inside the cylindrical member 150. Has been.
The liquid discharge port A-2 114 in the liquid supply member 200 shown in FIG. 5 is synonymous with the above-described liquid discharge port A-2 114, and the preferred embodiment is also the same.

FIG. 6 is a schematic view showing a CC cross-sectional view of the liquid supply member 200 in FIG.
6 is a cross-sectional view in a direction perpendicular to the axial direction of the cylindrical member 150. FIG.
In the liquid supply member 200 illustrated in FIG. 6, the partition member 128 divides the inside of the cylindrical member 150 into a region corresponding to the supply unit A 110 and a region corresponding to the supply unit B 120. These two regions are communicated with each other through a through hole 152 formed in the partition member 128.
Here, the region corresponding to the supply means A 110 of the through hole 152 corresponds to the liquid supply port A-1 112, and the region corresponding to the supply means B 120 side of the through hole 152 corresponds to the liquid discharge port B-1 122. .

-Partition member-
Although it does not specifically limit as the partition member 128, For example, the plate-shaped member which has the through-hole 152 is used.
The thickness of the plate-like member is not particularly limited, and may be set in consideration of the strength of the partition member 128, the inner diameters of the supply unit A 110 and the supply unit B 120, and the like.
In the partition member 128, only one through hole 152 may be formed, or a plurality of through holes 152 may be formed.
The shape of the through hole 152 is not particularly limited, but is preferably a circular shape from the viewpoint of suitability for manufacturing.
The diameter of the through hole 152 is not particularly limited, but is preferably 1 mm to 20 mm, and more preferably 4 mm to 10 mm.
The number and position of the through holes 152 in the partition member 128 are not particularly limited. When the partition member 128 has a plurality of through holes 152, the shape and diameter of each through hole may be the same or different from each other, but are preferably the same from the viewpoint of manufacturing aptitude. .

From the viewpoint of manufacturing aptitude, when the partition member 128 is a plate-shaped member having the through hole 152, at least one surface (preferably both surfaces) of the plate-shaped member that is the partition member 128 is It is preferable to be provided so as to be horizontal with respect to the central axis of the cylindrical member 150.
Hereinafter, an example of an aspect in which the plate-like member that is the partition member 128 is provided so that one surface (preferably both surfaces) is horizontal with respect to the central axis of the cylindrical member 150. This will be described with reference to FIG.

FIG. 7 is a schematic view showing an example of a DD cross-sectional view of the liquid supply member 200 in FIG.
7 is a cross-sectional view showing a cross-sectional structure of the cylindrical member 150 along a plane that includes the alternate long and short dash line DD and is parallel to the axial direction.
In the liquid supply member 200 illustrated in FIG. 7, the plate-like member that is the partition member 128 is provided so that both surfaces thereof are horizontal with respect to the central axis of the cylindrical member 150. That is, in the cross-sectional view shown in FIG. 7, both surfaces of the partition member 128 that is a plate-like member are horizontal with respect to the side surface of the cylindrical member 150.
In the liquid supply member 200 shown in FIG. 7, the inside of the cylindrical member 150 is partitioned by a partition member 128 having a through hole, so that the supply means B 120 is provided below the partition member 128 above the partition member 128. Supply means A 110 is formed on each side.
One end 126 of the supply means B is an opening, and the other end 124 is a closing portion. Further, both ends of the supply means A are closed portions. The means for closing these ends is not particularly limited, and may be closed by, for example, a rubber stopper.

In the liquid supply member 200 shown in FIG. 7, the liquid supplied from the opening 126 to the inside of the supply means B 120 is supplied to the inside of the supply means A 110 through the through hole 152 and supplied. The liquid is supplied from the liquid discharge port A-2 in the means A110 to the outside of the supply means A110.

From the viewpoint of suppressing liquid splash, when the partition member 128 is a plate-shaped member having the through hole 152, at least one surface (preferably both surfaces) of the plate-shaped member that is the partition member 128 is The cylindrical member 150 is provided so as to be inclined with respect to the central axis of the cylindrical member 150, and the area of the open end side opening of the supply means B is equal to that of the closed end side closed portion of the supply means B. It is preferable that it is larger than the area.
Hereinafter, FIG. 8 shows an example of a mode in which the plate-like member that is the partition member 128 is provided with one surface (preferably both surfaces) inclined with respect to the central axis of the cylindrical member 150. The description will be given with reference.

FIG. 8 is a schematic view showing another example of the DD cross-sectional view of the liquid supply member 200 in FIG.
The DD sectional view in FIG. 8 is a sectional view showing a cross-sectional structure of the cylindrical member 150 along a plane that includes the alternate long and short dash line DD and is parallel to the axial direction.
In the liquid supply member 200 illustrated in FIG. 8, the plate-like member that is the partition member 128 is provided so that both surfaces thereof are inclined with respect to the central axis of the cylindrical member 150. The area of the open end opening 126 in the means B is larger than the area of the closed end closure 124 in the supply means B.
Other aspects of the liquid supply member 200 illustrated in FIG. 8 are the same as the aspects of the liquid supply member 200 illustrated in FIG. 7.

<Second aspect>
In the second aspect of the liquid supply member according to the present disclosure, one end is closed (that is, one end becomes a closed portion), and the other end is opened (that is, another end). The liquid discharge port closest to the opened end side is provided with a supply means A for supplying the liquid with a plurality of liquid discharge ports A-2 in the side surface in the width direction. In this embodiment, the inner diameter of the supply means A at the position of the outlet A-2 is 20 mm or more.
According to the second aspect, for example, there is an advantage that the liquid supply member according to the present disclosure can be used with a simple design.
By setting the inner diameter to 20 mm or more, it is considered that the liquid pressure at the liquid discharge port A-2 close to the opened end side is reduced, and liquid splash is suppressed.
Hereinafter, an example of the second aspect will be described with reference to FIGS. 9 to 11. However, the second aspect is not limited to the aspects described in FIGS.

FIG. 9 is a schematic diagram illustrating an example of a second aspect of the liquid supply member 200 including the supply unit A according to the present disclosure.
In the liquid supply member 200 shown in FIG. 9, the supply means A 110 is configured such that one end (closed portion) 164 is closed to become a closed portion (that is, closed portion 164), and another one end 166 is opened to open an opening portion. This is a cylindrical object (that is, the opening 166).
The means for closing the closing portion 164 is not particularly limited, and may be closed by, for example, a rubber stopper.
In the liquid supply member 200 shown in FIG. 9, the supply means A 110 is formed with a plurality of liquid discharge ports A-2 114 in the width direction on the side surface.
The liquid discharge port A-2 114 has the same meaning as the above-described liquid discharge port A-2 114, and the preferred embodiment is also the same.
Furthermore, in the liquid supply member 200 shown in FIG. 9, the supply means A 110 is located most on the open end side (that is, the closed portion 164 side) of the liquid discharge ports A-2 114 formed on the side surface portion. The inner diameter R at the position of the near liquid discharge port A-2 114a is 20 mm or more.

FIG. 10 is a schematic view showing an EE cross-sectional view of the liquid supply member 200 in FIG.
10 is a cross-sectional view in a direction perpendicular to the axial direction of the liquid supply member 200, and is a cross-sectional view including the liquid discharge port A-2 114a closest to the opened end side.
In the liquid supply member 200 shown in FIG. 10, the inner diameter R of the supply means A 110 at the position 114a is 20 mm or more.
The inner diameter R is preferably 20 mm or more and 60 mm or less, and more preferably 25 mm or more and 40 mm or less.
Further, in the liquid supply member 200 shown in FIGS. 9 and 10, the supply means A 110 includes not only the liquid discharge port A-2 114a closest to the opened end side but also the liquid discharge port A-2 114. The inner diameter of all the existing positions is preferably 20 mm or more, more preferably 20 mm or more and 60 mm or less, and further preferably 25 mm or more and 40 mm or less.
In the liquid supply member 200, the outer diameter of the supply means A 110 at the position 114a is preferably 21 mm or greater and 66 mm or less, and more preferably 26 mm or greater and 46 mm or less.
In the liquid supply member 200 shown in FIGS. 9 and 10, the inner diameter of the supply means A 110 between the inner diameter of the liquid discharge port A-2 114a closest to the opened end side and the opening 166 is particularly limited. For example, the inner diameter of the supply unit A 110 at the position of the liquid discharge port A-2 114a closest to the opening 166 may be larger than the inner diameter of the opening 166. An example of such an embodiment is shown in FIG.

FIG. 11 is a schematic diagram illustrating another example of the second aspect of the liquid supply member according to the present disclosure.
In the liquid supply member 200 shown in FIG. 11, the supply means A 110 is designed so that the inner diameter at the position of the liquid discharge port A-2 114a closest to the opening 166 is larger than the inner diameter of the opening 166.
The distance F from the opening 166 shown in FIG. 11 to the inner diameter of the supply means A 110 being 20 mm or more is preferably as long as possible from the viewpoint of suppressing liquid splashes, but is preferably 0.5 cm to 10 cm. More preferably, it is 2 cm to 8 cm.
Other configurations of the liquid supply member 200 illustrated in FIG. 11 are the same as the configurations of the liquid supply member 200 illustrated in FIGS. 9 and 10, and the preferred embodiments are also the same.

(Development processing equipment for lithographic printing plate preparation)
A development processing apparatus for preparing a lithographic printing plate according to the present disclosure (hereinafter also simply referred to as “development processing apparatus”) includes a liquid supply member according to the present disclosure.
Although the development processing apparatus according to the present disclosure is not particularly limited, the liquid supply member according to the present disclosure is provided with a gum solution supply from the viewpoint that liquid splash when a highly viscous liquid is discharged can be suppressed. It is preferable to provide as a member for use.
Further, the development processing apparatus according to the present disclosure may include the liquid supply member according to the present disclosure as a cleaning liquid supply member or a water supply member.
The development processing apparatus according to the present disclosure preferably includes the liquid supply member according to the present disclosure as a liquid supply member used for supplying liquid to the roller. As said roller, the conveyance roller etc. which are mentioned later are mentioned, for example.

The development processing apparatus for preparing a lithographic printing plate according to the present disclosure includes a developing unit and a gum processing unit continuous with the developing unit, and the gum processing unit supplies a gum solution to the transport roller and the transport roller. And a liquid supply member according to the present disclosure. Moreover, it is a more preferable aspect that the gum processing unit includes a transport roller and a means for supplying a cleaning liquid to the transport roller (hereinafter referred to as a cleaning liquid supply means).
According to the preferable aspect, in the development processing apparatus having a development unit and a gum processing unit continuous with the development unit, the gum processing unit supplies a cleaning liquid to the transport roller and the transport roller (i.e., Development solution by dissolving or diluting the fixed gum component or high-concentration gum solution, which is considered to be present on the transport roller, with the cleaning solution supplied from the cleaning solution supply unit. It is considered that the halftone dot reproducibility at the time of printing of the resulting lithographic printing plate is excellent, and the occurrence of uneven printing durability of the halftone dots is suppressed.
Moreover, since the said gum process part is equipped with the member for liquid supply which concerns on this indication which supplies gum liquid to the said conveyance roller, the liquid splash of gum liquid is suppressed, for example, the below-mentioned washing | cleaning liquid diffusion member, backflow prevention member It is considered that rotational failure such as contact failure, contact failure, and the like are suppressed.
The development processing apparatus according to the present disclosure is preferably an automatic development processing apparatus.

Hereinafter, an embodiment of a development processing apparatus according to the present disclosure will be described in detail based on the drawings.
FIG. 12 is a schematic cross-sectional view of an example of a development processing apparatus according to the present disclosure.
The development processing apparatus 2 shown in FIG. 12 includes a development unit 4, a gum processing unit 6 continuous with the development unit 4, a second gum processing unit 8 continuous with the gum processing unit 6, and a drying unit 10. Have.
The developing device according to the present disclosure is not limited to the structure shown in FIG. 12, and may be applied as long as it has at least the developing unit 4 and the gum processing unit 6 continuous to the developing unit 4. Can do.
The development processing apparatus according to the present disclosure may or may not have the second gum processing unit 8 continuous with the gum processing unit 6, but from the viewpoint of stain resistance, the second gum processing unit 8 is preferable.
Further, the development processing apparatus according to the present disclosure may or may not include the drying unit 10.

The development processing device 2 shown in FIG. 12 performs development processing of the lithographic printing plate precursor exposed by an exposure device (not shown). Here, the exposure apparatus is not particularly limited, and a known exposure apparatus can be used.
The active energy ray used for exposure is not particularly limited as long as it is used for exposure of a lithographic printing plate precursor, and examples thereof include infrared rays and ultraviolet rays.
As the light source of the active energy ray used for exposure, a light source having a light emission wavelength from the near infrared to the infrared region is preferable, and a solid laser or a semiconductor laser is more preferable. In particular, in the present disclosure, it is particularly preferable to perform image exposure with a solid laser or a semiconductor laser that emits infrared rays having a wavelength of 750 nm to 1,400 nm.
The laser output is preferably 100 mW or more, and a multi-beam laser device is preferably used in order to shorten the exposure time. The exposure time per pixel is preferably within 20 μsec.
The energy applied to the lithographic printing plate precursor is preferably 10 mJ / cm ² to 300 mJ / cm ² . When it is in the above range, curing or dissolution is sufficiently promoted, laser ablation can be suppressed, and image damage can be prevented.
The exposure can be performed by overlapping the light beams of the light sources. Overlap means that the sub-scanning pitch width is smaller than the beam diameter. The overlap can be expressed quantitatively by FWHM / sub-scanning pitch width (overlap coefficient), for example, when the beam diameter is expressed by the half width (FWHM) of the beam intensity. The overlap coefficient is preferably 0.1 or more.
The scanning method of the light source of the exposure apparatus is not particularly limited, and a cylindrical outer surface scanning method, a cylindrical inner surface scanning method, a planar scanning method, or the like can be used. The light source channel may be a single channel or a multi-channel, but in the case of a cylindrical outer surface system, a multi-channel is preferably used.

The lithographic printing plate precursor developed by the development processing apparatus according to the present disclosure is not particularly limited, and a known positive or negative lithographic printing plate precursor can be used.
Among these, from the viewpoint of more effectively exhibiting the effects of halftone dot reproducibility and halftone dot printing durability, the lithographic printing plate precursor developed by the development processing apparatus according to the present disclosure is a positive lithographic printing plate precursor. Is preferred.
Details of the lithographic printing plate precursor used in the present disclosure will be described later.

The development processing apparatus 2 shown in FIG. 12 has a developing unit 4 for processing an exposed lithographic printing plate precursor (not shown) with a developer 18, and a plate surface protection for the developed lithographic printing plate precursor (not shown). The gum processing unit 6 and the second gum processing unit 8 that apply the gum solutions 56 and 64 to desensitize the surface and the drying unit that dries the lithographic printing plate precursor (or lithographic printing plate, not shown) that has been gummed. 10 are arranged. That is, the development processing apparatus 2 includes a development unit 4, a gum processing unit 6, a second gum processing unit 8, and a drying unit along a transport direction of the planographic printing plate precursor (a direction from the left side to the right side in FIG. 12). The parts 10 are arranged in order.
The exposed lithographic printing plate precursor (not shown) is transported to the developing unit 4 by a transport roller 12 composed of a pair of upper and lower rollers.
The development processing apparatus 2 may include a housing (not shown) that covers at least the upper part of the development unit 4, the gum processing unit 6, the second gum processing unit 8, the drying unit 10 and the like in addition to the wall material 14. It is preferable to have the casing.
The shapes of the wall material 14 and the housing are not particularly limited, and may be appropriately selected as necessary. Moreover, the material of the wall material 14 and the housing is not particularly limited, and a known material can be used.

The developing unit 4 includes transport rollers 16, 28 and 38 composed of a pair of upper and lower rollers, developer 18, developer discharge means 22 having a developer discharge port 20, transport belt 24, developer supply means 26, brush roller 30, A conveyance roller 32, a conveyance guide plate 34, a conveyance guide plate holding member 36, and a cover 40 are included.
The developing unit 4 has a substantially mountain shape with the bottom center protruding downward, and stores a developing solution 18 for developing the exposed lithographic printing plate precursor (not shown).
For example, the developer 18 is rotated at an angle in the range of about 15 ° to 31 ° with respect to the horizontal direction while drawing the exposed lithographic printing plate precursor (not shown) into the developing unit 4 by rotating the transport roller 16. Send in.
The temperature of the developer 18 is not particularly limited, but is preferably 0 ° C. to 60 ° C., more preferably 15 ° C. to 40 ° C.
Details of the developer 18 suitably used in the present disclosure will be described later.

The exposed lithographic printing plate precursor (not shown) is transported by the transport roller 16 and immersed in the developer 18, and sequentially passes through the transport belt 24, the transport roller 28, the transport guide plate 34, and the transport roller 38. Then, it is conveyed to the gum processing unit 6.
The exposed lithographic printing plate precursor (not shown) is immersed in the developing solution 18 and developed in the developing unit 4, and the developing plate 18 is rubbed and developed by the brush roller 30 in the developing solution 18. Is promoted. Further, when the lithographic printing plate precursor passes through the transport roller 38, the developer 18 attached to the developed lithographic printing plate precursor is partially squeezed and removed.
In the developing unit 4, a new developer 18 is supplied from the developer supply means 26. For example, in the case of the developer supply means 26 on the right side of FIG. 12, the developer 18 is discharged in the direction of the arrow.
Supply of the developer 18 by the developer supply means 26 may be continuous or intermittent, and can be supplied as necessary. Further, the supply direction of the developer 18 is not particularly limited, and the developer 18 may be discharged so as to be applied to the lithographic printing plate precursor, or may be supplied so that no intentional flow occurs in the developer 18.
The developing unit 4 is filled with the developing solution 18 to a certain height (for example, the height of the developing solution discharge port 20), and a space without the developing solution 18 above the developing solution discharge port 20. The developer 18 exceeding the height of the developer discharge port 20 passes through the developer discharge port 20 and is discharged by the developer discharge means 22.
The shapes of the developer discharge port 20 and the developer discharge means 22 are not particularly limited, and for example, a pipe shape as shown in FIG. 12 is preferable.
As described above, FIG. 12 illustrates an example of the developing unit 4 according to the present disclosure, but the developing unit 4 is not limited thereto.

The gum processing unit 6 is provided continuously to the developing unit 4.
In the present disclosure, the term “continuous” refers to the development and the gum treatment without performing another process (for example, a water washing process) between the development by the developing unit 4 and the gum process by the gum processing unit 6. The positions of the developing unit 4 and the gum processing unit 6 and their distances are not particularly limited and may be set as appropriate.
Further, at least a part of the gum processing unit 6, preferably a part continuous from the developing unit 4, the transport position of the developed lithographic printing plate precursor is higher than the level of the developer 18 in the developing unit 4. Preferably there is. If it is the said aspect, mixing with the gum liquid 56 of the gum processing part 6 of the developing solution 18 can be decreased.

The gum processing unit 6 includes transport rollers 42 and 44 composed of a pair of upper and lower rollers, gum solution supply sprays 46a and 46b, means for dripping the cleaning liquid (ie, means A) 48, a cleaning liquid diffusion member 50, a cleaning liquid supply means fixing unit 52, There is a gum solution discharge means 59 having a backflow preventing member 54, a gum solution 56, and a gum solution discharge port 58.
In the development processing apparatus according to the present disclosure, at least one of the gum solution supply sprays 46a and 46b is preferably a liquid supply member according to the present disclosure, and the gum solution supply spray 46a is at least a liquid supply according to the present disclosure. More preferably, it is a member.
The developed lithographic printing plate precursor (not shown) is transported from the developing unit 4, and between the transport roller 42 and the transport roller 44, the upper surface of the planographic printing plate precursor and the upper and lower gum solution supply sprays 46 a and 46 b and Both the lower surfaces are gummed and conveyed to the second gum processing unit 8.

The upper gum solution supply spray 46a in FIG. 12 sprays (i.e., supplies) the gum solution 56 toward the upper roller in the transport roller 42 composed of a pair of upper and lower rollers.
Further, the lower gum solution supply spray 46b in FIG. 12 sprays (i.e., supplies) the gum solution 56 toward the lower surface of the planographic printing plate precursor.
When the gum solution supply sprays 46a and / or 46b are liquid supply members according to the present disclosure, the gum solution 56 is discharged from the liquid discharge port A-2 of the liquid supply member.
The discharge direction of the gum solution 56 by the gum solution supply sprays 46a and 46b is not particularly limited, but an embodiment in which the directions are indicated by arrows in FIG.
Excess gum solution 56 is stored in the lower part of the gum processing unit 6.
The gum solution 56 discharged toward the roller by the upper gum solution supply spray 46a in FIG. 12 moves to the upper side of the roller with the rotation of the roller. It is possible to prevent the gum solution 56 from entering the developing solution 18 of the developing unit 4 through the plate precursor.
The shape of the backflow preventing member 54 is not particularly limited, but is preferably a columnar shape or a blade shape. Further, the backflow preventing member 54 is preferably provided in contact with the transport roller 42. Further, the backflow prevention member 54 is provided upstream of the cleaning liquid diffusing member 50 and the supply position of the cleaning liquid from the means A (that is, the means 48 for dropping the cleaning liquid) onto the roller in the rotating direction of the contacting roller. It is preferable that
That is, in the transport roller 42, the cleaning liquid diffusion member 50, the supply position of the cleaning liquid from the means A (means 48 for dropping the cleaning liquid) to the roller, and the backflow prevention member 54 are provided in this order from the downstream side in the rotation direction. Is preferred.
Moreover, it is preferable that the width | variety in the axial direction of the said roller in the backflow prevention member 54 is more than the width | variety of the said roller from a viewpoint of the inflow suppression to the image development part of a gum solution.

The gum processing unit 6 includes a transport roller 42 and a cleaning liquid supply unit (preferably a unit 48 for dropping the cleaning liquid) on the transport roller 42.
The means A is preferably a means 48 that is installed above the transport roller 42 in the gum processing unit 6 and that drops the cleaning liquid onto the transport roller 42.
The supply of the cleaning liquid by the means A may be ejected in the form of a spray, but is preferably dripped.
Further, the liquid supply means according to the present disclosure may be used as the means A to discharge (or spray) the cleaning liquid in a spray form.
The means 48 for dropping the cleaning liquid is fixed by the cleaning liquid supply means fixing unit 52, and drops the cleaning liquid on the upper roller of the transport roller 42. Further, the position of the cleaning liquid dripping from the means 48 for dripping the cleaning liquid onto the upper roller of the transport roller 42 is closer to the developing unit 4 side (that is, the downstream side in the rotation direction of the upper roller) and the shaft of the upper roller. A cleaning liquid diffusion member 50 is provided in contact with the outer periphery of the upper roller above the center.
The cleaning liquid diffusion member 50 is a member that is provided on the transport roller 42 in the gum processing unit 6 and diffuses the cleaning liquid dropped on the transport roller 42 onto the transport roller 42.

The cleaning liquid diffusing member 50 is configured to uniformly diffuse the cleaning liquid supplied from the means 48 for supplying the cleaning liquid to the upper roller of the conveying roller 42 in the gum processing unit 6 to the peripheral surface of the upper roller, and convey it. It has a function of washing the gum solution 56 from the peripheral surfaces of the upper and lower rollers of the roller 42. As a result, the gum solution remaining on the transport roller 42 is uniformly removed before the processing is stopped, and the concentration of the gum component is increased or fixed on the transport roller 42 after the processing is stopped. I have to.
A liquid pool can be formed between the cleaning liquid diffusing member 50 and the upper roller, and the cleaning liquid diffusing member 50 is positioned above the rotation axis of the upper roller so that the cleaning liquid does not overflow to a place other than the roller. It is preferably in contact with the roller.
The shape of the cleaning liquid diffusion member 50 is preferably a columnar bar or a plate-like blade, and more preferably a columnar bar.
When the cleaning liquid diffusion member 50 is a columnar member, a metal bar such as stainless steel, a rubber roller, or a resin roller is preferable. Further, the cylindrical cleaning liquid diffusion member 50 may be rotated following the rotation of the roller in contact therewith, may be fixed, or may be rotated by a drive shaft.
When the cleaning liquid diffusion member 50 is a plate-like or blade-like member, the material is preferably a material such as rubber, resin, metal, etc., which is flexible and does not damage the surface of the contacting roller. preferable. When the cleaning liquid diffusion member 50 is a plate-like or blade-like member, the cleaning liquid diffusion member 50 is more preferably a flexible rubber plate or a flexible resin plate.

The shape of the cleaning liquid supply means fixing portion 52 is not particularly limited, but as shown in FIG. 12, the cross-sectional shape is preferably a shape that covers at least three sides of the means 48 for dropping the cleaning liquid.
The cleaning liquid dropped on the upper roller from the means 48 for dropping the cleaning liquid is diffused in the axial direction of the upper roller of the transport roller 42 by the cleaning liquid diffusion member 50, and the upper roller and the lower roller of the transport roller 42. The cleaning liquid is also supplied to the roller, and the fixed gum component or the high-concentration gum liquid that is considered to be present on the conveying roller 42 can be dissolved or diluted with the cleaning liquid.
Also, the cleaning liquid can be supplied to the entire surface of each roller by rotating each roller of the transport roller 42.
The cleaning liquid that has flowed down from the conveying roller 42 is mixed with the gum liquid 56.
There is no restriction | limiting in particular in the temperature of the washing | cleaning liquid and the gum liquid 56, and its usage-amount, What is necessary is just to select suitably.
Details of the cleaning liquid and the gum liquid 56 that are preferably used in the present disclosure will be described later.

The timing for supplying the cleaning liquid from the cleaning liquid supply means (preferably the means 48 for dropping the cleaning liquid) is not particularly limited, and the cleaning liquid may be supplied at a desired timing as required.
Among them, from the viewpoint of halftone dot reproducibility of the obtained lithographic printing plate and suppression of uneven printing durability of the halftone dot, means A is from the end of the development processing operation, from the end of the development processing to the start of the next development processing. It is preferable that the cleaning liquid is set to be supplied onto the transport roller at least at one time point selected from the group consisting of the end of the operation of the development processing apparatus.
The method for controlling the timing of supplying the cleaning liquid is not particularly limited, and a known control means such as a computer is used.

Further, the gum processing unit 6 includes a conveyance roller 44 and a cleaning liquid supply unit (preferably a unit 48 for dropping the cleaning liquid).
The aspect of the conveyance roller 44 and the means 48 for dropping the cleaning liquid provided in the vicinity thereof (that is, means A), the cleaning liquid diffusion member 50, and the cleaning liquid supply means fixing portion 52 are the same as the aspect of the conveyance roller 42.
The gum processing unit 6 may or may not have the transport roller 44 that is the second transport roller, but from the viewpoint of squeezing the reliability of the gum processing and the extra gum solution 56, It is preferable to have the conveyance roller 44 which is the 2nd conveyance roller.
Moreover, in the gum processing part 6, the aspect by which the upper surface of the lithographic printing plate precursor is covered with the gum liquid supplied by the gum liquid supply spray 46a between the conveyance roller 42 and the conveyance roller 44 is also mentioned preferably.

Each of the gum solutions 56 supplied from the two gum solution supply sprays 46 a and 46 b is preferably a gum solution 56 collected from the bottom 60 of the gum processing unit 6. The gum solution 56 collected from the bottom 60 of the gum processing unit 6 is supplied to the gum solution supply sprays 46a and 46b by a pipe (not shown) and a pump (not shown) and sprayed.
The gum solution 56 supplied from the two gum solution supply sprays 46 a and 46 b may be a new gum solution 56 or a gum solution 64 collected from the second gum processing unit 8.
The gum solution 56 stored in the lower portion of the gum processing unit 6 is filled with the gum solution 56 to a certain level (the height of the gum solution discharge port 58), for example, and the gum solution discharge port 58 has a high height. The excess gum solution 56 passes through the gum solution discharge port 58 and is discharged by the gum solution discharge means 59 following the gum solution discharge port 58.
The shapes of the gum solution discharge port 58 and the gum solution discharge means 59 are not particularly limited, and for example, a pipe shape as shown in FIG.
Further, a cleaning liquid tank (not shown), a pipe (not shown), and a pump (not shown) are connected to the means 48 for dropping the two cleaning liquids shown in FIG. Is dripped.
Thus, although an example of the gum processing unit 6 in the present disclosure is shown in FIG. 12, it is needless to say that the present invention is not limited to this.

The second gum processing unit 8 is provided continuously to the gum processing unit 6.
The development processing apparatus according to the present disclosure may or may not have the second gum processing unit 8, but has the second gum processing unit 8 from the viewpoint of gum processing properties and plate surface stain prevention properties. It is preferable.
The second gum processing unit 8 includes a transport roller 62 composed of a pair of upper and lower rollers, gum solution supply sprays 46c and 46d, means 48 for dropping the cleaning solution, a cleaning solution diffusing member 50, a cleaning solution supply unit fixing unit 52, a gum solution 64, and A gum solution supply means 68 to the gum processing unit 6 having a gum solution discharge port 66 is provided.
In the development processing apparatus according to the present disclosure, at least one of the gum solution supply sprays 46c and 46d may be the liquid supply member according to the present disclosure.
The developed lithographic printing plate precursor (not shown) is conveyed from the gum processing unit 6, and before the conveying roller 62 in the conveying direction, the upper and lower gum plate supply sprays 46c and 46d are used to detect the upper and lower surfaces of the lithographic printing plate precursor. Both are gummed and conveyed to the drying section 10.

The gum solution 64 supplied by the two upper and lower gum solution supply sprays 46c and 46d in the second gum processing unit 8 passes through a pipe (not shown) and a pump (not shown) connected to the bottom of the second gum processing unit 8. Circulated. From the viewpoint of gum processing properties and plate surface stain prevention properties, a new gum solution (fresh gum solution) is added to the upper and lower two gum solution supply sprays 46c and 46d in the second gum processing unit 8 according to the treated area. Preferably it is replenished.
For example, a gum solution tank (not shown), a pipe (not shown) and a pump (not shown) are connected to the upper and lower two gum solution supply sprays 46c and 46d in the second gum processing unit 8, and the gum solution tank Newer gum solution is supplied.
In addition, from the viewpoint of gum processing properties and plate surface stain prevention properties, the second gum processing unit 8 is provided with means for replenishing water (non-use) in order to correct the amount of water evaporation according to the processed area and operating time. Preferably). Further, the gum processing unit 6 may have means for replenishing water.
The gum solution 64 stored in the lower part of the second gum processing unit 8 is filled with, for example, the gum solution 64 to a certain level (for example, the height of the gum solution discharge port 66). The gum solution 64 exceeding the height (a constant amount) of 66 passes through the gum solution outlet 66 and the gum solution supply means 68 and is supplied to the lower portion of the gum processing unit 6.
Moreover, from the viewpoint of stability in supplying the gum solution 64 to the gum processing unit 6, the liquid level of the gum solution 64 of the second gum processing unit 8 may be higher than the level of the gum solution 56 of the gum processing unit 6. Preferably, the difference d is preferably 1 cm or more, more preferably 2 cm or more, and particularly preferably 2 cm or more and 10 cm or less.

In addition, the second gum processing unit 8 squeezes the excess gum solution 64 by the transport roller 62 and transports it to the drying unit 10.
The aspect of the conveyance roller 62 and the means 48 for dropping the cleaning liquid provided in the vicinity thereof, the cleaning liquid diffusion member 50, and the cleaning liquid supply means fixing portion 52 are the same as the aspect of the conveyance roller 42.
Further, a cleaning liquid tank (not shown), a pipe (not shown) and a pump (not shown) are connected to the means 48 for dripping the cleaning liquid in the second gum processing unit 8 so that the cleaning liquid supplied from the cleaning liquid tank can be supplied. Dripping.
Furthermore, the second gum processing unit 8 may further include a transport roller composed of a pair of upper and lower rollers on the upstream side of the transport roller 62 in the transport direction.
Thus, although an example of the 2nd gum processing part 8 in this indication was shown in Drawing 12, it cannot be overemphasized that the 2nd gum processing part 8 is not limited to this.

The drying unit 10 is provided continuously to the second gum processing unit 8.
The development processing apparatus according to the present disclosure may or may not have the drying unit 10. That is, for example, the drying unit 10 may be an apparatus (that is, a drying apparatus) different from the development processing apparatus according to the present disclosure.
The drying unit 10 includes a support roller 70, transport rollers 74 and 78 including a pair of upper and lower rollers, drying means 72 and 76 having a pair of upper and lower ducts, and a planographic printing plate discharge port 80.
The lithographic printing plate precursor (not shown) that has been gummed is conveyed from the second gum processing unit 8 and is further transported by the support roller 70 and the conveying rollers 74 and 78 by the drying means 72 and 76. The upper and lower surfaces of the lithographic printing plate precursor (not shown) subjected to gum treatment are also dried, and the dried lithographic printing plate (not shown) is discharged from the lithographic printing plate discharge port 80.
In the drying means 72 and 76, the drying air generated by the drying air generating means (not shown) is blown from the ducts of the drying means 72 and 76 toward the planographic printing plate precursor that has been gummed. Thereby, the gum solution applied to the upper and lower surfaces of the lithographic printing plate precursor subjected to gum treatment is dried, and a protective film is formed.
The strength, temperature, and the like of the drying air blown from the drying means 72 and 76 are related to the conveyance speed, but are not particularly limited, and can be set to desired strength and temperature.
Further, a partition plate (not shown) may be provided between the second gum processing unit 8 and the drying unit 10. The said partition plate is arrange | positioned above the conveyance path of the lithographic printing plate precursor by which the gum processing was carried out, and it can suppress that the air in the drying part 10 penetrates into the 2nd gum processing part 8. FIG.
As described above, FIG. 12 illustrates an example of the drying unit 10 according to the present disclosure, but it is needless to say that the drying unit 10 is not limited thereto.

Further, the development processing apparatus according to the present disclosure may have a known configuration other than those described above.
For example, a preheating unit for heat-treating the exposed lithographic printing plate precursor may be provided before the developing unit 4.

Next, the lithographic printing plate precursor, developer, cleaning solution, and gum solution used in the present disclosure will be described.

<Lithographic printing plate precursor>
As described above, the lithographic printing plate precursor used in the present disclosure is not particularly limited, and a known positive or negative lithographic printing plate precursor can be used.
Among these, from the viewpoint of more effectively exerting the effects of halftone dot reproducibility and halftone dot printing durability, the lithographic printing plate precursor used in the present disclosure is preferably a positive lithographic printing plate precursor.
Examples of the lithographic printing plate precursor used in the present disclosure include various lithographic printing plate precursors in which an image recording layer such as a photosensitive layer and a thermosensitive layer is provided on a support.
Examples of the image recording layer include thermal positive types described in JP-A-7-285275 and JP-A-2003-345014, JP-A-7-20625, and JP-A-11-218903. And the thermal negative type and the photopoly negative type described in JP-A Nos. 2001-100412 and 2002-169282.
The lithographic printing plate precursor used in the present disclosure may further have known layers such as a protective layer and an undercoat layer.
The support, the image recording layer, the protective layer, the undercoat layer and the like are not particularly limited, and known ones can be used.

<Developer>
Details of the developer suitably used in the present disclosure will be described below.

[PH]
The pH of the developer used in the present disclosure is not particularly limited, but is preferably 8.5 to 14, and more preferably 10 to 14. When the pH of the developer is within the above range, the effect of suppressing halftone dot reproducibility and halftone dot printing durability is more exhibited.
In the present disclosure, the pH is a value measured at 25 ° C. using a pH meter (model number: HM-31, manufactured by Toa DKK Corporation).

[Surfactant]
The developer used in the present disclosure may contain a surfactant such as an anionic surfactant, a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant.
Especially, it is preferable that the said developing solution contains at least 1 sort (s) chosen from the group which consists of anionic surfactant and an amphoteric surfactant from a viewpoint of bran soiling property.
The developer preferably contains a nonionic surfactant, and contains a nonionic surfactant and at least one selected from the group consisting of an anionic surfactant and an amphoteric surfactant. Is more preferable.

(Anionic surfactant)
Preferred examples of the anionic surfactant include compounds represented by the following formula (I).
R ¹ -Y ¹ -X ¹ (I)
In formula (I), R ¹ represents an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group or an aryl group, which may have a substituent.
The alkyl group represented by R ¹ is preferably, for example, an alkyl group having 1 to 20 carbon atoms, and specifically includes a methyl group, an ethyl group, a propyl group, an n-butyl group, a sec-butyl group, and a hexyl group. Preferable examples include 2-ethylhexyl group, octyl group, decyl group, dodecyl group, hexadecyl group, stearyl group and the like.
The cycloalkyl group represented by R ¹ may be monocyclic or polycyclic. The monocyclic type is preferably a monocyclic cycloalkyl group having 3 to 8 carbon atoms, more preferably a cyclopropyl group, a cyclopentyl group, a cyclohexyl group or a cyclooctyl group. Preferred examples of the polycyclic type include an adamantyl group, norbornyl group, isobornyl group, camphanyl group, dicyclopentyl group, α-pinel group, tricyclodecanyl group and the like.
As the alkenyl group represented by R ¹ , for example, an alkenyl group having 2 to 20 carbon atoms is preferable, and specific examples include a vinyl group, an allyl group, a butenyl group, a cyclohexenyl group, and the like. it can.
As the aralkyl group represented by R ¹ , for example, an aralkyl group having 7 to 12 carbon atoms is preferable, and specific examples include a benzyl group, a phenethyl group, and a naphthylmethyl group.
The aryl group represented by R ¹ is preferably, for example, an aryl group having 6 to 15 carbon atoms, and specifically includes a phenyl group, a tolyl group, a dimethylphenyl group, 2,4,6-trimethylphenyl. Preferred examples include a group, a naphthyl group, an anthryl group, and a 9,10-dimethoxyanthryl group.

In addition, as the substituent, a monovalent nonmetallic atomic group excluding a hydrogen atom is used, and preferable examples include a halogen atom (F, Cl, Br or I), a hydroxy group, an alkoxy group, an aryloxy group, Examples include an acyl group, an amide group, an ester group, an acyloxy group, a carboxy group, a carboxylic acid anion group, and a sulfonic acid anion group.

Specific examples of the alkoxy group in the above substituent include methoxy, ethoxy, propyloxy, isopropyloxy, butyloxy, pentyloxy, hexyloxy, dodecyloxy, stearyloxy, methoxyethoxy, poly An alkoxy group having 1 to 40 carbon atoms, more preferably 1 to 20 carbon atoms, such as an (ethyleneoxy) group or a poly (propyleneoxy) group, can be mentioned.
As the aryloxy group in the above substituent, carbon such as phenoxy group, tolyloxy group, xylyloxy group, mesityloxy group, cumenyloxy group, methoxyphenyloxy group, ethoxyphenyloxy group, chlorophenyloxy group, bromophenyloxy group, naphthyloxy group, etc. Examples are those of formula 6-18.
Examples of the acyl group in the substituent include those having 2 to 24 carbon atoms such as an acetyl group, a propanoyl group, a butanoyl group, a benzoyl group, and a naphthoyl group.
Examples of the amide group in the substituent include those having 2 to 24 carbon atoms such as acetamido group, propionic acid amide group, dodecanoic acid amide group, palmitic acid amide group, stearic acid amide group, benzoic acid amide group, and naphthoic acid amide group. Is mentioned.
Examples of the ester group in the substituent include those having 1 to 24 carbon atoms such as a methyl ester group, an ethyl ester group, a propyl ester group, a hexyl ester group, an octyl ester group, a dodecyl ester group, and a stearyl ester group.
Examples of the acyloxy group in the substituent include those having 2 to 20 carbon atoms such as an acetoxy group, a propanoyloxy group, a benzoyloxy group, and a naphthoyloxy group.
The substituent may be a combination of two or more of these substituents.

X ¹ represents a sulfonate group, a sulfuric monoester base, a carboxylate group or a phosphate group.
Y ¹ is a single bond, —C _n H _2n —, —C _nm H _{2 (nm)} OC _m H _2m —, —O— (CH ₂ CH ₂ O) _n —, —O— (CH ₂ CH ₂ CH ₂ O) _n —, —CO—NH—, or a divalent linking group consisting of a combination of two or more thereof, n and m represent a positive integer, n ≧ 1, n ≧ 1 Satisfy m ≧ 0.

Among these, among the compounds represented by the formula (I), the compounds represented by the following formula (IA) or (IB) are preferable from the viewpoint of scratch resistance.

In formula (IA) and formula (IB), R ^A1 to R ^A10 each independently represents a hydrogen atom or an alkyl group, nA represents an integer of 1 to 3, and X ^A1 and X ^A2 each represents Independently, it represents a sulfonate group, a sulfate monoester base, a carboxylate group or a phosphate group, and Y ^A1 and Y ^A2 each independently represent a single bond, —CnH _2n —, —C _nm H _{2 (nm )} OC _m H _2m —, —O— (CH ₂ CH ₂ O) _n —, —O— (CH ₂ CH ₂ CH ₂ O) _n —, —CO—NH—, or a combination of two or more of these 2 Represents a valent linking group, n and m represent a positive integer, satisfy n ≧ 1 and n ≧ m ≧ 0, in R ^A1 to R ^A5 or in R ^A6 to R ^A10 , and Y ^A1 or Y ^A2 The total number of carbon atoms (also referred to as total carbon number) is 3 or more.

In the compound represented by the above formula (IA) or formula (IB), the total carbon number of R ^A1 to R ^A5 and Y ^1A , or R ^A6 to R ^A10 and Y ^A2 is 25 or less. 4 to 20 is more preferable. The structure of the alkyl group represented by R ^A1 to R ^A10 may be linear or branched.
X ^A1 and X ^A2 in the compound represented by formula (IA) or formula (IB) are preferably a sulfonate group or a carboxylate group. In addition, the salt structure in X ^A1 and X ^A2 is preferably an alkali metal salt because the solubility in water is particularly good. Especially, the salt structure in X ^A1 and X ^A2 is particularly preferably a sodium salt or a potassium salt.
As the compound represented by the above formula (IA) or (IB), the description in paragraphs 0019 to 0037 of JP-A-2007-206348 can be referred to.
Further, as the anionic surfactant, compounds described in paragraphs 0023 to 0028 of JP-A-2006-65321 can be suitably used.
An anionic surfactant may be used individually by 1 type in a developing solution, and may be used in combination of 2 or more type.

(Amphoteric surfactant)
The amphoteric surfactant is not particularly limited, but includes amine oxide amphoteric surfactants such as alkyldimethylamine oxide, betaine amphoteric surfactants such as alkylbetaines, fatty acid amidopropylbetaines, alkylimidazoles, and alkylamino fatty acid sodium. And amino acid amphoteric surfactants.

In particular, as the amphoteric surfactant, an alkyldimethylamine oxide which may have a substituent, an alkylcarboxybetaine which may have a substituent, and an alkylsulfobetaine which may have a substituent are preferably used. Specific examples thereof include compounds represented by the formula (2) in paragraph 0256 of JP-A-2008-203359, formulas (I), (II) and formulas in paragraph 0028 of JP-A-2008-276166. Examples thereof include compounds represented by (VI) and compounds described in paragraphs 0022 to 0029 of JP-A-2009-47927.

As the amphoteric surfactant used in the developer, a compound represented by the following formula (1) or a compound represented by the formula (2) is preferable.

In formulas (1) and (2), R ¹ and R ¹¹ each independently represents an alkyl group having 8 to 20 carbon atoms or an alkyl group having a linking group having 8 to 20 carbon atoms.
R ² , R ³ , R ¹² and R ¹³ each independently represents a group containing a hydrogen atom, an alkyl group or an ethylene oxide group.
R ⁴ and R ¹⁴ each independently represents a single bond or an alkylene group.
Further, two groups out of R ¹ , R ² , R ³ and R ⁴ may be bonded to each other to form a ring structure, and two groups out of R ¹¹ , R ¹² , R ¹³ and R ¹⁴ are They may combine to form a ring structure.

In the compound represented by the above formula (1) or the compound represented by the formula (2), when the total carbon number increases, the hydrophobic portion increases and the solubility in an aqueous developer decreases. In this case, the solubility of the compound represented by the above formula (1) or the compound represented by the formula (2) is improved by mixing an organic solvent such as alcohol that aids dissolution into water as a solubilizing agent. To do. However, when the total carbon number becomes too large, the compound represented by the above formula (1) or the compound represented by the formula (2) becomes difficult to dissolve even within the proper mixing range of the above organic solvent. . Accordingly, the total number of carbon atoms of R ¹ to R ⁴ or R ¹¹ to R ¹⁴ (that is, the total number of carbon atoms) is preferably 10 to 40, more preferably 12 to 30.

When R ¹ or R ¹¹ is an alkyl group, the carbon number is preferably 10-18. The alkyl group represented by R ¹ or R ¹¹ may be linear or branched, but is preferably linear (that is, a linear alkyl group).

The alkyl group having a linking group represented by R ¹ or R ¹¹ represents a structure having a linking group between the alkyl groups. That is, when there is one linking group, it can be represented by “-alkylene group-linking group-alkyl group”. Examples of the linking group include an ester bond, a carbonyl bond, and an amide bond. There may be two or more linking groups, but preferably one. The linking group is particularly preferably an amide bond. The total number of carbon atoms of the alkylene group bonded to the linking group is preferably 1 to 5. The alkylene group may be linear or branched, but is preferably linear (that is, a linear alkylene group). The alkyl group bonded to the linking group preferably has 3 to 19 carbon atoms, and may be linear or branched, but is linear (that is, a linear alkyl group). Is preferred.

When R ² or R ¹² is an alkyl group, the carbon number is preferably 1 to 5, and particularly preferably 1 to 3. The alkyl group represented by R ² or R ¹² may be linear or branched, but is preferably linear (that is, a linear alkyl group).

When R ³ or R ¹³ is an alkyl group, the carbon number is preferably 1 to 5, and particularly preferably 1 to 3. The alkyl group represented by R ³ or R ¹³ may be linear or branched, but is preferably linear (that is, a linear alkyl group).
Examples of the group containing ethylene oxide represented by R ³ or R ¹³ include a group represented by —R ^a (CH ₂ CH ₂ O) _n R ^b . Here, R ^a represents a single bond, an oxygen atom or a divalent organic group (preferably having 10 or less carbon atoms), R ^b represents a hydrogen atom or an organic group (preferably having 10 or less carbon atoms), and n is 1 Represents an integer of ~ 10.

When R ⁴ and R ¹⁴ are an alkylene group, the number of carbon atoms is preferably 1 to 5, and particularly preferably 1 to 3. The alkylene group represented by R ⁴ and R ¹⁴ may be linear or branched, but is preferably linear (that is, a linear alkylene group).
The compound represented by Formula (1) or the compound represented by Formula (2) preferably has an amide bond, and more preferably has an amide bond as a linking group for R ¹ or R ¹¹ .
Representative examples of the compound represented by formula (1) or the compound represented by formula (2) are shown below, but the present disclosure is not limited thereto.

The compound represented by the formula (1) or the compound represented by the formula (2) can be synthesized according to a known method. Moreover, as a compound represented by Formula (1) or a compound represented by Formula (2), it is also possible to use what is marketed. As a commercially available product, examples of the compound represented by the formula (1) include SOFTAZOLINE LPB, SOFTAZOLINE LPB-R, Vista MAP manufactured by Kawaken Fine Chemical Co., Ltd., and Takesurf C-157L manufactured by Takemoto Oil & Fat Co., Ltd. . Examples of the compound represented by the formula (2) include Sofazoline LAO manufactured by Kawaken Fine Chemical Co., Ltd., Amorgen AOL manufactured by Daiichi Kogyo Seiyaku Co., Ltd., and the like.
Amphoteric surfactants may be used alone or in combination of two or more in the developer.

(Nonionic surfactant)
Nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene polystyryl phenyl ethers, glycerin fatty acid partial esters, sorbitan fatty acid partial esters, pentaerythritol fatty acid partial esters. , Propylene glycol mono fatty acid esters, sucrose fatty acid partial esters, polyoxyethylene sorbitan fatty acid partial esters, polyoxyethylene sorbitol fatty acid partial esters, polyethylene glycol fatty acid esters, polyglycerin fatty acid partial esters, polyoxyethylene glycerin Fatty acid partial esters, polyoxyethylene diglycerins, fatty acid diethanolamides, N, N-bis-2-hydroxyalkyl Min, polyoxyethylene alkyl amines, triethanolamine fatty acid esters, trialkylamine oxides, polyoxyethylene alkyl phenyl ethers, polyoxyethylene - polyoxypropylene block copolymers, and the like.
Further, as the nonionic surfactant, oxyethylene adducts of acetylene glycols or acetylene alcohols, fluorine-based surfactants, and the like can also be used.
A nonionic surfactant may be used individually by 1 type in a developing solution, and may be used in combination of 2 or more types.

Particularly preferable examples of the nonionic surfactant include nonionic aromatic ether surfactants represented by the following formula (N1).
X ^N -Y ^N -O- (A ¹ ) _nB- (A ² ) _mB -H (N1)
In formula (N1), X ^N represents an aromatic group which may have a substituent, Y ^N represents a single bond or an alkylene group having 1 to 10 carbon atoms, and A ¹ and A ² are different from each other. A group represented by either —CH ₂ CH ₂ O— or —CH ₂ CH (CH ₃ ) O—, wherein nB and mB each independently represent an integer of 0 to 100, provided that nB and mB And nB and mB are not 1 when nB and mB are 0 at the same time.

^Examples of the aromatic group represented by XN include a phenyl group, a naphthyl group, and an anthranyl group. Examples of the substituent of the aromatic group include organic groups having 1 to 100 carbon atoms.
Specific examples of the organic group having 1 to 100 carbon atoms include an aliphatic hydrocarbon group or an aromatic hydrocarbon group (for example, an alkyl group, an alkenyl group, an alkynyl group) which may be saturated or unsaturated, and may be linear or branched. Group, aryl group, aralkyl group, etc.), in addition, alkoxy group, aryloxy group, N-alkylamino group, N, N-dialkylamino group, N-arylamino group, N, N-diarylamino group, N-alkyl -N-arylamino group, acyloxy group, carbamoyloxy group, N-alkylcarbamoyloxy group, N-arylcarbamoyloxy group, N, N-dialkylcarbamoyloxy group, N, N-diarylcarbamoyloxy group, N-alkyl- N-arylcarbamoyloxy group, acylamino group, N-alkylacylamino group, N- Reel acylamino group, acyl group, alkoxycarbonylamino group, alkoxycarbonyl group, aryloxycarbonyl group, carbamoyl group, N-alkylcarbamoyl group, N, N-dialkylcarbamoyl group, N-arylcarbamoyl group, N, N-diaryl Examples thereof include organic groups such as a carbamoyl group and N-alkyl-N-arylcarbamoyl group, and the above organic groups to which a polyoxyalkylene chain and a polyoxyalkylene chain are bonded.
Alkylene group represented by Y ^N can be linear or may be branched.
As the nonionic surfactant (more specifically, the nonionic aromatic ether surfactant), compounds described in paragraphs 0030 to 0040 of JP-A-2006-65321 can be preferably used.

(Cationic surfactant)
The cationic surfactant is not particularly limited, and conventionally known cationic surfactants can be used. For example, alkylamine salts, quaternary ammonium salts, alkylimidazolinium salts, polyoxyethylene alkylamine salts, polyethylene polyamine derivatives and the like can be mentioned.
A cationic surfactant may be used individually by 1 type in a developing solution, and may be used in combination of 2 or more type.

Surfactant may be used individually by 1 type, or may use 2 or more types together.
The content of the surfactant is preferably 1% by mass to 25% by mass, more preferably 2% by mass to 20% by mass, still more preferably 3% by mass to 15% by mass, and more preferably 5% by mass with respect to the total mass of the developer. % To 10% by mass is particularly preferable. When it is within the above range, scratch resistance is excellent, the development residue dispersibility is excellent, and the resulting lithographic printing plate is excellent in ink landing properties.

[Other additives]
In addition to the above, the developer used in the present disclosure may contain a wetting agent, preservative, chelate compound, antifoaming agent, organic acid, organic solvent, inorganic acid, inorganic salt, and the like.

As the wetting agent, ethylene glycol, propylene glycol, triethylene glycol, butylene glycol, hexylene glycol, diethylene glycol, dipropylene glycol, glycerin, trimethylolpropane, diglycerin and the like are preferably used.
Wetting agents may be used alone or in combination of two or more.
The content of the wetting agent is preferably 0.1% by mass to 5% by mass with respect to the total mass of the developer.

Preservatives include phenol or derivatives thereof, formalin, imidazole derivatives, sodium dehydroacetate, 4-isothiazolin-3-one derivatives, benzoisothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, benztriazole derivatives Amiding anidine derivatives, quaternary ammonium salts, derivatives of pyridine, quinoline, guanidine, diazine, triazole derivatives, oxazole, oxazine derivatives, 2-bromo-2-nitropropane-1,3-diol, 1,1-dibromo Nitrobromoalcohols such as 1-nitro-2-ethanol and 1,1-dibromo-1-nitro-2-propanol are preferably used.
The content of the preservative is an amount that exerts stability against bacteria, molds, yeasts, etc., and varies depending on the types of bacteria, molds, yeasts, etc., but is 0% relative to the total mass of the developer. 0.01 mass% to 4 mass% is preferable.
Moreover, it is preferable to use 2 or more types of preservatives together so that it may be effective with respect to various molds and sterilization.

Examples of the chelate compound include ethylenediaminetetraacetic acid, potassium salt thereof, sodium salt thereof; diethylenetriaminepentaacetic acid, potassium salt thereof, sodium salt thereof; triethylenetetraminehexaacetic acid, potassium salt thereof, sodium salt thereof; hydroxyethylethylenediaminetriacetic acid Nitrilotriacetic acid, sodium salt; 1-hydroxyethane-1,1-diphosphonic acid, potassium salt, sodium salt; aminotri (methylenephosphonic acid), potassium salt, sodium salt Organic phosphonic acids such as;
As the chelate compound, an organic amine salt may be used in place of the sodium salt or potassium salt of the organic phosphonic acid.
It is preferable that the chelate compound is stably present in the developer and does not inhibit the printability.
The content of the chelate compound is preferably 0.001% by mass to 1.0% by mass with respect to the total mass of the developer.

As the antifoaming agent, general silicone-based antifoaming agents (for example, self-emulsifying type, emulsifying type, etc.), nonionic HLB (Hydrophilic-Lipophilic Balance) 5 or less compounds and the like can be used. In particular, as the antifoaming agent, a silicone-based antifoaming agent is preferable.
In the present disclosure, the silicone surfactant in the developer is regarded as an antifoaming agent.
The content of the antifoaming agent is preferably 0.001% by mass to 1.0% by mass with respect to the total mass of the developer.

Examples of the organic acid include citric acid, acetic acid, succinic acid, malonic acid, salicylic acid, caprylic acid, tartaric acid, malic acid, lactic acid, levulinic acid, p-toluenesulfonic acid, xylenesulfonic acid, phytic acid, and organic phosphonic acid. . The organic acid can also be used in the form of its alkali metal salt or ammonium salt.
The content of the organic acid is preferably 0.01% by mass to 0.5% by mass with respect to the total mass of the developer.

Examples of the organic solvent include aliphatic hydrocarbons (hexane, heptane, “Isopar E, H, G” (produced by Esso Chemical Co., Ltd.), gasoline, kerosene, etc.), aromatic hydrocarbons (toluene, xylene, etc.) ), Halogenated hydrocarbons (methylene dichloride, ethylene dichloride, trichlene, monochlorobenzene, etc.), polar solvents, and the like.

Polar solvents include alcohols (methanol, ethanol, propanol, isopropanol, benzyl alcohol, ethylene glycol monomethyl ether, 2-ethoxyethanol, diethylene glycol monoethyl ether, diethylene glycol monohexyl ether, triethylene glycol monomethyl ether, propylene glycol monoethyl ether , Propylene glycol monomethyl ether, polyethylene glycol monomethyl ether, polypropylene glycol, tetraethylene glycol, ethylene glycol monobutyl ether, ethylene glycol monobenzyl ether, ethylene glycol monophenyl ether, methylphenyl carbinol, n-amyl alcohol, methyl amyl alcohol, etc.) , Tons (acetone, methyl ethyl ketone, ethyl butyl ketone, methyl isobutyl ketone, cyclohexanone, etc.), esters (ethyl acetate, propyl acetate, butyl acetate, amyl acetate, benzyl acetate, methyl lactate, butyl lactate, ethylene glycol monobutyl acetate, propylene Glycol monomethyl ether acetate, diethylene glycol acetate, diethyl phthalate, butyl levulinate, etc.) and others (triethyl phosphate, tricresyl phosphate, N-phenylethanolamine, N-phenyldiethanolamine, etc.).

Further, when the organic solvent is insoluble in water, it can be used after being solubilized in water using a surfactant or the like.
When the developer contains an organic solvent, the content of the organic solvent is preferably less than 40% by mass with respect to the total mass of the developer from the viewpoints of safety and flammability.

Examples of inorganic acids and inorganic salts include phosphoric acid, metaphosphoric acid, primary ammonium phosphate, secondary ammonium phosphate, primary sodium phosphate, secondary sodium phosphate, primary potassium phosphate, secondary potassium phosphate, Examples thereof include sodium tripolyphosphate, potassium pyrophosphate, sodium hexametaphosphate, magnesium nitrate, sodium nitrate, potassium nitrate, ammonium nitrate, sodium sulfate, potassium sulfate, ammonium sulfate, sodium sulfite, ammonium sulfite, sodium hydrogen sulfate, nickel sulfate and the like.
The content of the inorganic salt is preferably 0.01% by mass to 0.5% by mass with respect to the total mass of the developer.

In addition, the developer used in the present disclosure preferably contains an alcohol compound from the viewpoint of dispersibility of development residue.
Examples of the alcohol compound include methanol, ethanol, propanol, isopropanol, benzyl alcohol and the like. Of these, benzyl alcohol is preferred.
The content of the alcohol compound is preferably 0.01% by mass to 5% by mass, and preferably 0.1% by mass to 2% by mass with respect to the total mass of the developer from the viewpoint of dispersibility of the development residue. More preferably, it is particularly preferably 0.2% by mass to 1% by mass.

The developer used in the present disclosure is preferably an aqueous developer, and can be obtained by dissolving or dispersing each of the above components in water.
The solid concentration of the developer is preferably 2% by mass to 25% by mass.
Further, as the developer, a concentrated solution can be prepared and diluted with water at the time of use.

<Cleaning liquid>
Details of the cleaning liquid suitably used in the present disclosure will be described below.

The cleaning liquid may preferably be water alone, such as tap water, well water, pure water, ion-exchanged water, etc., as long as the purpose of diluting or removing the gum liquid remaining on the roller with the cleaning liquid is not impaired. An aqueous solution containing the following components may be used.
The content of water in the cleaning liquid is not particularly limited, but is preferably 50% by mass or more, more preferably 80% by mass or more, and 90% by mass or more with respect to the total mass of the cleaning liquid. Is particularly preferred.

The cleaning liquid is preferably neutral (preferably pH 5 to 9, more preferably pH 6 to 8), and preferably contains a pH adjusting agent in order to maintain neutrality.
As a pH adjuster, a buffer compound used in a known buffer solution can be used.
Further, the cleaning liquid may contain a surfactant, a lipophilic substance, an antiseptic, an antifungal agent, an antifoaming agent, and the like.
Among these, from the viewpoint of storage stability, the cleaning liquid preferably contains at least an antiseptic, and more preferably an aqueous solution containing an antiseptic.

As the preservative, known preservatives used in the fields of fiber, wood processing, food, medicine, cosmetics, agricultural chemicals and the like can be used.
Examples of preservatives include quaternary ammonium salts, monohydric phenol derivatives, dihydric phenol derivatives, polyhydric phenol derivatives, imidazole derivatives, pyrazolopyrimidine derivatives, monohydric naphthols, carbonates, sulfone derivatives, organotin compounds, Cyclopentane derivatives, phenyl derivatives, phenol ether derivatives, phenol ester derivatives, hydroxylamine derivatives, nitrile derivatives, naphthalenes, pyrrole derivatives, quinoline derivatives, benzothiazole derivatives, secondary amines, 1,3,5-triazine derivatives, thiadiazoles Derivatives, anilide derivatives, pyrrole derivatives, halogen derivatives, dihydric alcohol derivatives, dithiols, cyanic acid derivatives, thiocarbamic acid derivatives, diamine derivatives, isothiazole derivatives, monohydric alcohols Saturated aldehyde, unsaturated monocarboxylic acid, saturated ether, unsaturated ether, lactone, amino acid derivative, hydantoin, cyanuric acid derivative, guanidine derivative, pyridine derivative, saturated monocarboxylic acid, benzenecarboxylic acid derivative, hydroxycarboxylic acid derivative, biphenyl Hydroxamic acid derivatives, aromatic alcohols, halogenophenol derivatives, benzenecarboxylic acid derivatives, mercaptocarboxylic acid derivatives, quaternary ammonium salt derivatives, triphenylmethane derivatives, hinokitiol, furan derivatives, benzofuran derivatives, acridine derivatives, isoquinoline derivatives, arsine Derivatives, thiocarbamic acid derivatives, phosphate esters, halogenobenzene derivatives, quinone derivatives, benzenesulfonic acid derivatives, monoamine derivatives, organophosphates Le, piperazine derivatives, phenazine derivatives, pyrimidine derivatives, thiophanate derivatives, imidazoline derivatives, isoxazole derivatives, ammonium salt derivatives, and the like.

Particularly preferred preservatives include pyridinethiol-1-oxide salts, salicylic acid and its salts, 1,3,5-trishydroxyethylhexahydro-S-triazine, 1,3,5-trishydroxymethylhexahydro-S. -Triazine, 1,2-benzisothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, and 2-bromo-2-nitro-1,3-propanediol.
The content of the preservative is an amount that exerts stability against bacteria, molds, yeasts, etc., and varies depending on the types of bacteria, molds, yeasts, etc., but 50 ppm to 5,000 ppm is preferable, and 100 ppm to 3,000 ppm is more preferable.
Moreover, it is preferable to use 2 or more types of preservatives together in a washing | cleaning liquid so that it may be effective with respect to various mold | fungi and bacteria.
As a commercially available preservative, BK-3 manufactured by FUJIFILM Corporation is preferably used.

Examples of the surfactant include an anionic surfactant, a cationic surfactant, an amphoteric surfactant, and a nonionic surfactant.
Anionic surfactants include fatty acid salts, abietic acid salts, hydroxyalkane sulfonates, alkane sulfonates, α-olefin sulfonates, dialkyl sulfosuccinates, alkyl diphenyl ether disulfonates, linear alkyl benzene sulfonates. Branched alkylbenzene sulfonates, alkylnaphthalene sulfonates, alkylphenoxy polyoxyethylene propyl sulfonates, polyoxyethylene alkyl sulfophenyl ether salts, N-methyl-N-oleyl taurine sodium, N-alkyl sulfosuccinic acid monoamides Disodium salts, petroleum sulfonates, sulfated castor oil, sulfated beef tallow oil, fatty acid alkyl ester sulfate esters, alkyl sulfate esters, Reoxyethylene alkyl ether sulfates, fatty acid monoglyceride sulfates, polyoxyethylene alkylphenyl ether sulfates, polyoxyethylene styryl phenyl ether sulfates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, poly Examples thereof include oxyethylene alkylphenyl ether phosphate esters, partially saponified styrene-maleic anhydride copolymers, partially saponified olefin-maleic anhydride copolymers, and naphthalene sulfonate formalin condensates.
Among these, the anionic surfactant is at least one selected from the group consisting of dialkyl sulfosuccinates, alkyl sulfate esters, alkyl naphthalene sulfonates, α-olefin sulfonates, and alkyl diphenyl ether disulfonates. Certain compounds are particularly preferably used.

As the cationic surfactant, alkylamine salts, quaternary ammonium salts and the like are used.

As the amphoteric surfactant, alkyl carboxybetaines, alkyl imidazolines, alkylaminocarboxylic acids and the like are used.

Nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene polystyryl phenyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, glycerin fatty acid partial esters, sorbitan fatty acids Partial esters, pentaerythritol fatty acid partial esters, propylene glycol mono fatty acid esters, sucrose fatty acid partial esters, polyoxyethylene sorbitan fatty acid partial esters, polyoxyethylene sorbitol fatty acid partial esters, polyethylene glycol fatty acid esters, poly Glycerin fatty acid partial esters, polyoxyethylenated castor oil, polyoxyethylene glycerin fatty acid partial esters, fatty acid diesters Tanolamides, N, N-bis-2-hydroxyalkylamines, polyoxyethylene alkylamines, triethanolamine fatty acid esters, trialkylamine oxides, polypropylene glycols having a molecular weight of 200 to 5,000, trimethylol Examples include propane, glycerin, or sorbitol polyoxyethylene or polyoxypropylene adducts, acetylene glycols, and the like.
In addition, a fluorine-based or silicone-based nonionic surfactant can also be used for the cleaning liquid.

Surfactant may be contained individually by 1 type, or may contain 2 or more types.
The content of the surfactant is not particularly limited, but is preferably 0.01% by mass to 20% by mass and more preferably 0.05% by mass to 10% by mass with respect to the total mass of the cleaning liquid. preferable.

The cleaning liquid may contain an antifoaming agent.
As an antifoamer, a well-known antifoamer can be used and a silicone type antifoamer is preferable. As the silicone-based antifoaming agent, any of an emulsified dispersion type and a solubilized type can be used.
An antifoamer may be contained individually by 1 type, or may contain 2 or more types.
The content of the antifoaming agent is not particularly limited, but is preferably 0.001% by mass to 1.0% by mass with respect to the total mass of the cleaning liquid.

When the cleaning liquid contains alkaline earth metals such as calcium and magnesium, metal ions, etc., the cleaning liquid is disclosed, for example, in JP-A-58-75152 in order to prevent the generation of precipitates in the gum treatment section 6. Neutral salts such as NaCl, KCl and KBr described in the gazette, and chelating agents such as ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA) described in JP-A-59-190952 may be included.

In addition, the cleaning liquid may contain a gum component as long as it does not impair the purpose of diluting or removing the gum liquid remaining on the roller with the cleaning liquid, and the cleaning liquid is a diluting liquid for the gum liquid used in the gum processing section. Also good.
The concentration of the gum component in the cleaning liquid is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 10% by mass, with respect to the concentration of the gum component of the gum solution used in the gum treatment part. A mass% or less is particularly preferred.

<Gum solution>
In the present disclosure, the gum solution refers to a liquid containing a water-soluble polymer compound.
In the present disclosure, water-soluble means a property of dissolving 0.1 g or more in 100 g of distilled water at 25 ° C. In the present disclosure, the polymer compound means a compound having a weight average molecular weight of 5,000 or more.
The detail of the gum solution used suitably for this indication is demonstrated below.

The gum solution preferably contains water.
The content of water in the gum solution is not particularly limited, but is preferably 30% by mass or more, more preferably 50% by mass or more, and 70% by mass or more based on the total mass of the gum solution. It is particularly preferred.

The gum solution contains a water-soluble polymer compound.
Examples of the water-soluble polymer compound include gum arabic, fiber derivatives (eg, carboxymethylcellulose, carboxyethylcellulose, methylcellulose, hydroxypropylcellulose, methylpropylcellulose, etc.) and modified products thereof, polyvinyl alcohol and derivatives thereof, polyvinylpyrrolidone, Polyacrylamide, vinyl methyl ether / maleic anhydride copolymer, vinyl acetate / maleic anhydride copolymer, styrene / maleic anhydride copolymer, starch derivatives (eg, dextrin, maltodextrin, enzymatic degradation dextrin, hydroxypropylated) Starch, hydroxypropylated starch enzymatically degraded dextrin, carboxydimethylated starch, cyclodextrin and the like), pullulan and pullulan derivatives.

Other examples of starch derivatives that can be used as water-soluble polymer compounds include roasted starch such as British gum, enzyme-modified dextrins such as enzyme dextrin and shardinger dextrin, and oxidized starch shown in solubilized starch. Pregelatinized starch such as modified pregelatinized starch and unmodified pregelatinized starch, esterified starch such as phosphate starch, fat starch, sulfated starch, nitrate starch, xanthate starch and carbamate starch, carboxyalkyl starch, hydroxyalkyl starch, Sulfoalkyl starch, cyanoethyl starch, allyl starch, benzyl starch, carbamylethyl starch, etherified starch such as dialkylamino starch, methylol crosslinked starch, hydroxyalkyl crosslinked starch, phosphate crosslinked starch, crosslinked starch such as dicarboxylic acid crosslinked starch, Starch polyac Rhoamide copolymer, starch polyacrylic acid copolymer, starch polyvinyl acetate copolymer, starch polyacrylonitrile copolymer, chaotic starch polyacrylic ester copolymer, chaotic starch vinyl polymer copolymer, starch polystyrene Examples thereof include starch graft polymers such as maleic acid copolymer, starch polyethylene oxide copolymer, and starch polypropylene copolymer.

Natural polymer compounds can also be used as the water-soluble polymer compound. Examples of natural polymer compounds include soybean polysaccharides, starch, gelatin, hemicellulose extracted from soybeans, candied starch, potato starch, tapioca starch, wheat starch, and starches such as corn starch, carrageenan, laminaran, seaweed mannan, funori, Obtained from algae such as Irish moss, agar, and sodium alginate, plant mucilage such as troolloi, mannan, quince seed, pectin, tragacanth gum, karaya gum, xanthine gum, guarbin gum, locust bin gum, carob gum, benzoin gum, dextran Proteins such as homopolysaccharides such as glucan and levan, microbial mucilages such as hetropolysaccharides such as succinoglucan and santham gum, and proteins such as glue, gelatin, casein and collagen are preferred.

Of these, starch derivatives such as gum arabic, dextrin and hydroxypropyl starch, carboxymethylcellulose, soybean polysaccharides and the like can be preferably used as the water-soluble polymer compound.
The content of the water-soluble polymer compound is preferably 0.1% by mass to 25.0% by mass, and preferably 0.3% by mass to 20.0% by mass with respect to the total mass of the gum solution. More preferred.

The pH of the gum solution is preferably acidic, more preferably pH 2-6.
In order to bring the gum solution to the above pH, it is preferable to adjust the gum solution by adding a pH adjusting agent such as a mineral acid, an organic acid, or a salt thereof.
Examples of the pH adjuster include, as mineral acids, nitric acid, sulfuric acid, phosphoric acid, metaphosphoric acid, polyphosphoric acid, and the like.
Examples of the organic acid include acetic acid, succinic acid, citric acid, malic acid, malonic acid, tartaric acid, p-toluenesulfonic acid, lactic acid, levulinic acid, phytic acid, and organic phosphonic acid.
Preferred salts include disodium hydrogen phosphate, dipotassium hydrogen phosphate, diammonium hydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, ammonium dihydrogen phosphate, potassium pyrophosphate, sodium hexametaphosphate, sodium tripolyphosphate, sodium nitrate , Potassium nitrate, ammonium nitrate, sodium sulfate and the like.
A pH adjuster may be used individually by 1 type, or may use 2 or more types together.
The content of the pH adjusting agent is preferably 0.01% by mass to 3.0% by mass with respect to the total mass of the gum solution.

The gum solution preferably further contains a surfactant.
Examples of the surfactant include an anionic surfactant and a nonionic surfactant.
Anionic surfactants include fatty acid salts, abietic acid salts, hydroxyalkane sulfonates, alkane sulfonates, dialkyl sulfosuccinates, linear alkyl benzene sulfonates, branched alkyl benzene sulfonates, alkyl naphthalene sulfonates. , Alkylphenoxy polyoxyethylene propyl sulfonates, polyoxyethylene alkyl sulfophenyl ether salts, sodium N-methyl-N-oleyl taurine, disodium N-alkylsulfosuccinate monoamide, petroleum sulfonates, sulfated castor oil , Sulfated beef tallow oil, sulfates of fatty acid alkyl esters, alkyl sulfates, polyoxyethylene alkyl ether sulfates, fatty acid monoglyceride sulfates Tellurium salt, polyoxyethylene alkylphenyl ether sulfate ester salt, polyoxyethylene styryl phenyl ether sulfate ester salt, alkyl phosphate ester salt, polyoxyethylene alkyl ether phosphate ester salt, polyoxyethylene alkylphenyl ether phosphate ester salt, styrene-anhydrous Examples thereof include partially saponified products of maleic acid copolymers, partially saponified products of olefin-maleic anhydride copolymers, and naphthalene sulfonate formalin condensates.
Among these, as the anionic surfactant, dialkyl sulfosuccinates, alkyl sulfate esters, or alkyl naphthalene sulfonates are particularly preferably used.

Nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, glycerin fatty acid partial esters, sorbitan fatty acid partial esters, pentaerythritol fatty acid partial esters, propylene glycol mono fatty acid esters. , Sucrose fatty acid partial esters, polyoxyethylene sorbitan fatty acid partial esters, polyoxyethylene castor oil ethers, polyoxyethylene sorbitol fatty acid partial esters, polyethylene glycol fatty acid esters, polyglycerin fatty acid partial esters, polyoxyethylene Glycerin fatty acid partial esters, fatty acid diethanolamides, N, N-bis-2-hydroxyalkylamines, polyoxyethylene alkylamino S, triethanolamine fatty acid esters, and the like trialkylamine oxides.
Among these, polyoxyethylene alkyl ethers, polyoxyethylene-polyoxypropylene block copolymers, polyoxyethylene castor oil ethers and the like are preferably used as the nonionic surfactant.

Further, as the surfactant, oxyethylene adducts of acetylene glycols or acetylene alcohols, fluorine-based, silicone-based anionic or nonionic surfactants can also be used.

Two or more of these surfactants can be used in the gum solution.
In the gum solution, for example, a combination of two or more different anionic surfactants and a combination of an anionic surfactant and a nonionic surfactant are preferable. It is preferable to select and use the surfactant in consideration of the influence on the environment.
The content of the surfactant is not particularly limited, but is preferably 0.01% by mass to 20% by mass with respect to the total mass of the gum solution.

The gum solution preferably contains an organic solvent having a boiling point of 130 ° C. or higher from the viewpoint of protecting the oil sensitivity of the image area in the lithographic printing plate.
The organic solvent having a boiling point of 130 ° C. or more also functions to remove the trace amount of the image recording layer adhering to the hydrophilic non-image area and to improve the hydrophilicity of the non-image area.

Specific examples of organic solvents having a boiling point of 130 ° C. or higher include alcohols such as n-hexanol, 2-ethylbutanol, n-heptanol, 2-heptanol, 3-heptanol, 2-octanol, 2-ethylhexanol, 3,5 , 5-trimethylhexanol, nonanol, n-decanol, undecanol, n-dodecanol, trimethylnonyl alcohol, tetradecanol, cyclohexanol, benzyl alcohol, tetrahydrofurfuryl alcohol and the like.
Examples of ketones include methyl-n-amyl ketone, methyl-n-hexyl ketone, ethyl-n-butyl ketone, di-n-propyl ketone, diacetone alcohol, and cyclohexanone.
Esters include: n-amyl acetate, isoamyl acetate, methyl isoamyl acetate, methoxybutyl acetate, benzyl acetate, ethyl lactate, butyl lactate, lactate-n-amyl, methyl benzoate, ethyl benzoate and benzyl benzoate Phthalic acids such as benzoates, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, di-2-ethylhexyl phthalate, dioctyl phthalate, dinonyl phthalate, didecyl phthalate, dilauryl phthalate, butyl benzyl phthalate Diesters, dioctyl adipate, butyl glycol adipate, dioctyl azelate, dibutyl sebacate, di (2-ethylhexyl) sebacate, dioctyl sebacate and other aliphatic dibasic esters, epoxidized triglycera such as epoxidized soybean oil Earth, tricresyl phosphate, trioctyl phosphate, phosphate esters such as tris chloroethyl phosphate, and the like.
Examples of amides include N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, N-butyl-2-pyrrolidone and the like.

Polyhydric alcohols and their derivatives include ethylene glycol, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol butyl ether, ethylene glycol dibutyl ether, ethylene glycol isoamyl ether, ethylene glycol monophenyl ether, ethylene glycol monophenyl Ether acetate, ethylene glycol benzyl ether, ethylene glycol monohexyl ether, methoxyethanol, diethylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetate, diethylene glycol dimethyl ether Ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, triethylene glycol, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, tetraethylene glycol, propylene glycol, dipropylene glycol, propylene glycol monoethyl ether, propylene glycol monobutyl ether, 1 -Butoxyethoxypropanol, dipropylene glycol, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether, tripropylene glycol monobutyl ether, butylene glycol, hexylene glycol, octylene glycol, glycerin, diglycerin , It may be mentioned trimethylolpropane, glycerol monoacetate, glycerol triacetates.
Examples of the hydrocarbon organic solvent include aromatics, aliphatic compounds, squalane and the like of petroleum fractions having a boiling point of 160 ° C. or higher.

Conditions for selecting an organic solvent having a boiling point of 130 ° C. or higher include its environmental safety, particularly odor. The organic solvent having a boiling point of 130 ° C. or higher may be used alone or in combination of two or more in the gum solution.
The content of the organic solvent having a boiling point of 130 ° C. or higher is preferably 0.1% by mass to 5.0% by mass, and 0.3% by mass to 3.0% by mass with respect to the total mass of the gum solution. It is more preferable.
In the gum solution, the organic solvent having a boiling point of 130 ° C. or higher may be solubilized with a surfactant or emulsified and dispersed as an oil phase.

(Preparation method of lithographic printing plate)
The method for producing a lithographic printing plate according to the present disclosure is not particularly limited as long as it is a method for producing a lithographic printing plate using the development processing apparatus according to the present disclosure. It is preferable that the gum processing is carried out using the gum solution in the gum processing section, and the planographic printing plate precursor is developed with an alkaline developer having a pH of 8.5 to 14 in the development section. Then, it is more preferable that the gum processing is performed using the gum solution in the gum processing section, and the lithographic printing plate precursor is developed in the developing section with an alkaline developer having a pH of 8.5 to 14, and then Particularly preferred is a method in which the gum treatment is performed using a gum solution having a pH of 2 to 6 in the gum treatment part.
The preferred embodiments of the development processing apparatus, the developer, the gum solution, the cleaning solution, and the like according to the present disclosure that are used in the method for producing a lithographic printing plate according to the present disclosure are the same as the preferred embodiments described above.

The supply amount of the cleaning liquid onto the transport roller in the gum processing unit is not particularly limited, but from the viewpoint of suppressing halftone dot reproducibility and halftone printing durability of the obtained lithographic printing plate, It is preferable that the supply amount is 50 mL / time or more and about 20% by mass or less based on the total mass of the gum solution in the gum processing unit, and the supply amount is 50 mL / time or more and 200 mL / time. It is more preferable that the amount is 1% by mass or more and 20% by mass or less based on the total mass of the gum solution in the gum processing unit.

Further, from the viewpoint of halftone dot reproducibility of the obtained lithographic printing plate and suppression of uneven printing durability of the halftone dots, the gum solution remaining in the nip portion (for example, between two rollers) of the conveyance roller in the gum processing unit It is preferable that the solid content concentration of the gum solution after the supply of the cleaning solution is 50% by mass or less with respect to the solid content concentration. Moreover, the lower limit of the solid content concentration of the gum solution after the cleaning solution is supplied is 0% by mass.
The solid content concentration of the gum solution is determined by collecting the gum solution remaining in the nip portion (for example, between two rollers) of the conveyance roller in the gum processing section with a dropper and volatilizing volatile components such as water. The solid content concentration is calculated by measuring the mass before and after volatilization.

The solid content concentration of the gum solution on the roller before washing can be determined by the following procedure.
Within 1 minute after stopping the gum treatment, 0.5 cc of the gum solution from the meniscus formed by the gum solution from the center in the width direction of the nip portion of the inlet side conveying roller pair in the gum treatment unit using a micropipette Collect. This is immediately placed on a 10 cm × 10 cm aluminum plate, and the weight is measured with an electronic balance. The weight of the gum solution is calculated by subtracting the weight of the aluminum plate measured in advance. Furthermore, after putting the aluminum plate on which the gum solution is placed in a drying oven at 80 ° C. and drying, the weight is measured with an electronic balance, the weight of the gum solution solids, and the gum solution on the roller before washing Calculate the partial concentration.
Further, after the gum treatment is stopped, the roller is washed under the above-described conditions after a predetermined time has elapsed. After the completion of washing, the solid content concentration of the gum solution on the roller after washing is calculated in the same manner as before washing.
From the above, the dilution ratio of the gum component on the roller by the cleaning liquid can be calculated.

In addition, for aspects other than the development processing apparatus, the developer, the gum solution, and the cleaning solution according to the present disclosure in the method for preparing a lithographic printing plate according to the present disclosure, reference can be made to known methods for preparing a lithographic printing plate. .

The method for producing a lithographic printing plate according to the present disclosure preferably includes an exposure step of exposing the lithographic printing plate precursor imagewise to form an exposed portion and an unexposed portion.
The image exposure of the lithographic printing plate precursor can be performed according to the normal image exposure operation of the lithographic printing plate precursor.
The image exposure is performed by laser exposure through a transparent original image having a line image, a halftone dot image or the like, or by laser beam scanning by digital data. The wavelength of the light source is preferably 700 nm to 1,400 nm. As a light source having a wavelength of 700 nm to 1,400 nm, a solid-state laser and a semiconductor laser that emit infrared rays are suitable. Regarding the infrared laser, the output is preferably 100 mW or more, the exposure time per pixel is preferably within 20 μsec, and the irradiation energy amount is preferably 10 mJ / cm ² to 300 mJ / cm ² . In order to shorten the exposure time, it is preferable to use a multi-beam laser device. The exposure mechanism may be any of an internal drum system, an external drum system, a flat bed system, and the like. Image exposure can be performed by a conventional method using a plate setter or the like.

The lithographic printing plate obtained by the method for preparing a lithographic printing plate according to the present disclosure is suitably used for printing on a recording medium that supplies dampening water and printing ink to the lithographic printing plate, and has halftone dot reproducibility during printing. And the occurrence of uneven printing durability of halftone dots is suppressed.
The printing ink is not particularly limited, and various known inks can be used as desired. Moreover, as printing ink, oil-based ink or ultraviolet curable ink (UV ink) is mentioned preferably, UV ink is mentioned more preferably.
Moreover, there is no restriction | limiting in particular as dampening water, A well-known thing can be used.
The recording medium is not particularly limited, and a known recording medium can be used as desired.

Hereinafter, the present disclosure will be described in detail by way of examples, but the present disclosure is not limited thereto. In this example, “%” and “part” mean “% by mass” and “part by mass”, respectively, unless otherwise specified. In addition, in the polymer compound, the molecular weight is a weight average molecular weight (Mw), and the ratio of the structural units is a mole percentage, unless otherwise specified.

Example 1
<Liquid supply member 1>
As the liquid supply member, a liquid supply member having the structure shown in FIG. 3 was used.
Specifically, both ends of a stainless steel pipe having an outer diameter of 18 mm, an inner diameter of 12 mm, and a length of 1,330 mm are closed with a rubber stopper, and a liquid supply port A-1 (circular shape, diameter of 2.8 mm, 53 pieces) The liquid discharge port A-2 (circular shape, diameter 7 mm, 4) was formed so that the angle θ shown in FIG. The intervals between the plurality of liquid supply ports A-1 and the plurality of liquid discharge ports A-2 were set to be equal.
Further, one end of a stainless steel pipe having an outer diameter of 18 mm, an inner diameter of 12 mm, and a length of 1,330 mm is closed with a rubber stopper to form a liquid discharge port B-1 (circular shape, diameter of 7 mm, 4 pieces), and supply means B was produced.
The supply means A and the supply means B are overlapped so that the liquid supply port A-1 and the liquid discharge port B-1 are connected to obtain the liquid supply member 1.

<Development processing device>
The development processing apparatus shown in FIG. 12 was used.
The liquid supply member 1 was used as the gum liquid supply spray 46a in FIG.
From the gum solution supply spray, the gum solution is discharged at the timing when the plate starts to be conveyed to the processing machine, and the discharge of the gum solution is stopped at the timing when the conveyance of the plate is completed.
The sizes of the transport rollers 42, 44 and 62 were all 60 mm in diameter and 1,350 mm in width.

Moreover, the following were used for the lithographic printing plate precursor, the developer, the cleaning solution, and the gum solution.
Lithographic printing plate precursor: Fujifilm XP-F (positive lithographic printing plate precursor, 1,030 mm × 800 mm)
Developer: A solution in which XP-D manufactured by Fuji Film Co., Ltd. and ion-exchanged water are mixed at a mass ratio of 1: 8 (pH = 13)
Developer replenisher: a solution in which XP-DR manufactured by Fuji Film Co., Ltd. and ion-exchanged water are mixed at a mass ratio of 1: 6.5 (pH = 13)
Cleaning solution: Preservative (BK-3 manufactured by Fuji Film Co., Ltd.) 1000ppm aqueous solution Gum solution: XP-G (pH = 4.5) manufactured by Fuji Film Co., Ltd.

In addition, the lithographic printing plate precursor used was the above-described one exposed imagewise with an energy of 80 mJ / cm ² using a Lotem 400 Quantum imager manufactured by CREO.
The exposure image included a solid image and a 50% halftone dot halftone dot image of TAFFETA20 (FM screen) manufactured by FUJIFILM Corporation.

<Evaluation of inhibition of liquid splash>
Using the development processing apparatus, 300 exposed lithographic printing plate precursors were developed to prepare a lithographic printing plate.
In the development processing apparatus, a cleaning liquid supply means fixed in which a wall surface on the side of supplying the gum liquid to the gum liquid supply spray 46a (that is, a side surface of the housing of the development processing apparatus) and a means 48 for supplying the cleaning liquid are fixed. Dry white paper for liquid splash detection was installed outside the unit 52 (specifically, on the installation side of the gum solution supply spray 46a). After the development of the 300 sheets, the white paper set in the development processing apparatus was taken out, and the presence or absence and the extent of the gum liquid droplet trace due to the liquid splash on the white paper were visually evaluated.
When the liquid supply member 1 was used in the developing device, it was confirmed that there was no trace of gum liquid droplets due to liquid splash on white paper, and generation of liquid splash was suppressed.

(Example 2)
The liquid splash was evaluated by the same method as in Example 1 except that the gum liquid supply spray 46a was changed to the following liquid supply member 2.
When the liquid supply member 2 is used, seven gum liquid droplet traces due to liquid splash on white paper are recognized, clearly less than Comparative Example 1 described later, and the occurrence of liquid splash is suppressed. confirmed.

<Liquid supply member 2>
As the liquid supply member, a liquid supply member having the structure shown in FIG. 11 was used.
Specifically, the inner diameter of the opening is 12 mm, F in FIG. 11 is 3 cm, the inner diameter of the supply means A at the position of the liquid discharge port A-2 closest to the opened end side is 30 mm, length 1, The end of a 310 mm stainless steel pipe was closed with a rubber stopper to form a liquid discharge port A-2 (circular shape, diameter 2.8 mm, 53 pieces) to produce a liquid supply member 2. The intervals between the plurality of liquid discharge ports A-2 were set to be equal.

(Comparative Example 1)
The liquid splash was evaluated by the same method as in Example 1 except that the gum liquid supply spray 46a was changed to the following comparative liquid supply member 1.
When the comparative liquid supply member 1 is used, the liquid droplet trace of the gum liquid on the white paper is recognized as a state where more than half of the entire area of the white paper is wet, and there is a large amount of liquid splash It was confirmed that this occurred.

<Comparison liquid supply member 1>
As the liquid supply member, a liquid supply member having the structure shown in FIGS. 9 and 10 and having an inner diameter R = 12 mm in FIG. 10 was used.
Specifically, the end of a stainless steel pipe having an inner diameter of 12 mm and a length of 1,330 mm is closed with a rubber stopper to form a liquid discharge port A-2 (circular shape, diameter 2.8 mm, 53 pieces). A supply member 1 was produced.

From the above results, it can be seen that according to the liquid supply member according to the present disclosure, the occurrence of liquid splash is suppressed.

[Explanation of symbols]
2: Development processing apparatus (development processing apparatus) for preparing a lithographic printing plate, 4: Development section, 6: Gum processing section, 8: Second gum processing section, 10: Drying section, 12: Conveying roller, 14: Wall material, 16: Transport roller, 18: Developer, 20: Developer discharge port, 22: Developer discharge means, 24: Transport belt, 26: Developer supply means, 28: Transport roller, 30: Brush roller, 32: Transport roller , 34: conveyance guide plate, 36: conveyance guide plate holding member, 38: conveyance roller, 40: cover, 42: conveyance roller, 44: conveyance roller, 46a to 46d: liquid supply member (gum solution supply spray), 48 : Means for dripping cleaning liquid, 50: cleaning liquid diffusion member, 52: cleaning liquid supply means fixing part, 54: backflow prevention member, 56: gum liquid, 58: gum liquid discharge port, 59: gum liquid discharge means, 60: gum treatment Bottom: 62: Conveying roller, 64: Gum liquid, 66: Gum liquid discharge port, 68: Gum liquid supply means, 70: Support roller, 72: Drying means, 74: Conveying roller, 76: Drying means, 78: Conveying roller 80: lithographic printing plate discharge port, 110: supply means A, 112: liquid supply port A-1, 114: liquid discharge port A-2, 114a: liquid discharge port A-2 closest to the opened end side, 120: supply means B, 122: liquid discharge port B-1, 124: terminal (closed part), 126: terminal (opening part), 130: joint, 150: cylindrical member, 164: terminal (closed part) 166: Terminal (opening), 200: Member for supplying liquid, d: Difference between the liquid level of the gum liquid 56 in the gum processing section 6 and the liquid level of the gum liquid 64 in the second gum processing section 8, F: Liquid Distance until the inner diameter of the supply member 200 reaches 20 mm or more R: inner diameter R of the supply means A, theta: the center and the angle of the center and the angle formed of the liquid discharge port A-2 of the liquid supply port A-1

The disclosure of Japanese application 2018-099813 filed on May 24, 2018 is hereby incorporated by reference in its entirety.
All documents, patent applications, and technical standards mentioned in this specification are to the same extent as if each individual document, patent application, and technical standard were specifically and individually stated to be incorporated by reference, Incorporated herein by reference.

Claims (13)

1. It has a hollow rod shape with both ends closed and has a liquid supply port A-1 on the side surface and a plurality of liquid discharge ports A-2 on the side surface in the width direction. A liquid supply member comprising supply means A used.
2. 2. The liquid supply member according to claim 1, further comprising supply means B for supplying a liquid to the supply means A.
3. The supply means B has a hollow rod shape with one end closed and the other end open, and has a liquid discharge port B-1 on the side surface. The liquid supply member according to claim 2, wherein a liquid is supplied to the liquid supply port A-1.
4. The supply means A has a cylindrical shape with both ends closed, the supply means B has a cylindrical shape with one end closed and the other end open, and the liquid in the supply means A 4. The liquid supply member according to claim 3, wherein the supply port A-1 and the liquid discharge port B-1 in the supply unit B are connected.
5. The liquid supply according to claim 3, wherein the supply means A and the supply means B are formed in the cylindrical member by partitioning the inside of one cylindrical member with a partition member having a through hole. Materials.
6. The liquid supply member according to claim 5, wherein the partition member is a plate-like member, and at least one surface of the plate-like member is provided horizontally with respect to a central axis of the cylindrical member. .
7. The partition member is a plate-like member, and at least one surface of the plate-like member is provided to be inclined with respect to the central axis of the cylindrical member, and the open end side in the supply means B The liquid supply member according to claim 5, wherein an area of the opening is larger than an area of the closed end portion of the supply means B on the closed end side.
8. A cylindrical shape in which one end is closed and the other end is opened, and has a plurality of liquid discharge ports A-2 in the side surface in the width direction, and includes supply means A for supplying liquid,
   The inner diameter of the supply means A at the position of the liquid discharge port A-2 closest to the opened end side is 20 mm or more;
   Liquid supply member.
9. The liquid supply member according to any one of claims 1 to 8, which is a gum solution supply member.
10. The liquid supply member according to any one of claims 1 to 9, which is used in a development processing apparatus for preparing a lithographic printing plate.
11. The liquid supply member according to any one of claims 1 to 10, which is used for supplying a liquid to a roller.
12. A development processing apparatus for preparing a lithographic printing plate comprising the liquid supply member according to any one of claims 1 to 11.
13. A developing section;
    A gum processing part continuous with the developing part,
    The development processing apparatus for preparing a lithographic printing plate according to claim 12, wherein the gum processing unit includes a transport roller and the liquid supply member that supplies a gum solution to the transport roller.

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