JP2002102609A - Filter casing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter casing facilitating a maintenance of a filter. SOLUTION: An inner cylinder 124 is provided on a cap 118 mounted to an outer casing and a filter element is attached by inserting this inner cylinder to a frame body of a filter element 128 provided with the filter 132. At this time, the filter element is closely attached to the cap by a simple work that a claw part 144 of the inner cylinder is inserted to a cut-in part 136 of the frame body and the frame body is turned to the arrow D direction. The filter element is simply attached into the outer casing by inserting this filter element to the outer case and turning the cap.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter case which is provided in a photosensitive material processing apparatus for processing a photosensitive material or the like with a processing liquid, and is provided with a filter for removing solids in the processing liquid.

[0002]

2. Description of the Related Art In a photosensitive material processing apparatus, while transporting an image-exposed photosensitive material, the photosensitive material is immersed in a processing solution or a processing solution is sprayed on the surface of the photosensitive material.
Processing such as development is performed using a plurality of processing liquids.

For example, in a PS plate processor, which is a photosensitive material processing apparatus for processing a photosensitive lithographic printing plate (hereinafter, referred to as a “PS plate”) as a photosensitive material, a developing step of immersing the PS plate in a developing solution for processing; A washing step of spraying washing water on the PS plate to perform a washing treatment, a desensitizing step of applying a desensitizing treatment liquid such as a gum solution to the surface of the PS plate after the washing treatment and performing a desensitizing treatment, A plurality of processing steps using a processing liquid are provided, and the image-exposed PS plate is subjected to development, washing, desensitization, and the like.

In such a PS plate processor, for example, a brush roller is provided in a developing tank, and the removal of an unnecessary photosensitive layer is promoted by brushing the surface of the PS plate with the brush roller. Also,
In the PS plate processor, by circulating the developer in the developing tank, the developer is stirred so that the concentration and temperature of the developer become uniform, thereby improving the finished quality of the PS plate.

By the way, in the developing solution, dust or dust such as paper powder of a PS plate to be processed or silicate or the like contained in the photosensitive layer may be mixed in a lump. . If these solids such as dust, dust and silicate clumps are mixed into the developing solution and adhere to the surface of the PS plate, they may hinder the progress of the developing process or may cause the finished PS.
The finished quality of the PS plate may be degraded, for example, by remaining on the surface of the plate.

For this reason, in the PS plate processor, when circulating the developing solution in the developing tank, a filter is provided in the middle of the circulating path to remove solids in the developing solution.

By the way, since solids in the developing solution adhere to the filter and become clogged, it is necessary to frequently perform maintenance such as cleaning.

Some of such filters are formed in a cylindrical shape, and the filter is accommodated in a cylindrical outer case. To remove the filter from the filter case, which is the outer case, remove the cap provided at the opening of the filter case,
It is necessary to manually pull out a cylindrical filter (filter element) from inside the filter case. At this time, since the filter is pushed into the filter case, it may not be easy to take out the filter, and improvement in workability when removing the filter is desired.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to propose a filter case in which a filter can be easily attached and detached.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an outer case which is formed in a substantially cylindrical shape and is provided with a processing solution introduction pipe and a delivery pipe, and an opening of the outer case. An inner cylinder that is provided on a cap to be closed and is accommodated in the outer case by attaching the cap to the outer case and through which the processing liquid sent from the introduction pipe passes toward the delivery pipe; A filter is provided on the surface of a substantially cylindrical frame that can be stored in the case, and the processing liquid flowing to the delivery pipe can pass through the filter when the inner cylinder is inserted into the frame. A filter element, a claw portion provided on one of the frame of the filter element or the inner cylinder and protruding along the radial direction, and the other of the frame of the filter element or the inner cylinder. A hole is formed in which the claw portion is inserted when the inner cylinder is inserted into the filter element, and the filter element is directed toward the cap by relatively rotating the filter element and the inner cylinder. And holding means for holding by relative movement.

According to the present invention, the inside of the outer case is sealed by attaching the cap to the outer case. In addition, an inner cylinder is attached to the cap, and by inserting this inner cylinder into the frame of the filter element,
The filter element is mounted.

At this time, the claw portion formed on one of the frame and the inner cylinder of the filter element is inserted into the hole formed on the other, and the filter element (frame) is turned to rotate the filter element. Is held. Further, by turning the filter element in reverse, the filter element can be removed from the inner cylinder.

[0013] That is, by removing the cap from the outer case, the filter element can be pulled out of the outer case together with the inner cylinder. Further, by turning the filter element to a predetermined angle with respect to the inner cylinder, the filter element can be removed from the inner cylinder. Can be removed, and maintenance such as cleaning and replacement of the filter provided on the filter element becomes easy.

According to a second aspect of the present invention, the filter element is directed toward the cap by rotating the filter element around the inner cylinder in a state where the holding means has inserted the claw portion into the hole. And a slope portion that is relatively moved.

According to the present invention, a slope is formed around the hole, and the claw inserted into the hole relatively moves along the slope to move the frame of the filter element to the cap. And firmly hold the frame between the cap and the claw. By providing a sealing means such as packing between the frame of the filter element and the inner cylinder or cap, it is possible to reliably prevent the processing liquid from being discharged without passing through the filter.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a photosensitive lithographic printing plate processing apparatus (hereinafter referred to as “P”) applied as an example of a photosensitive material processing apparatus.
S-version processor 10). The PS plate processor 10 develops a photosensitive lithographic printing plate (hereinafter, referred to as a “PS plate 12”) such as a photopolymer plate, which is a type of photosensitive material image-exposed by an exposure device (not shown). . Note that P
The S plate 12 uses a thin rectangular flat plate such as an aluminum plate as a support, and forms a photosensitive layer on the support. The photopolymer plate has a photosensitive layer in which an optical bonding layer, a photopolymerization layer, and an overcoat layer are stacked. The layer is formed, and the image is exposed to light by the laser beam, whereby the polymerization reaction of the image portion of the photopolymerized layer is promoted.

The PS plate processor 10 includes a developing unit 14 for treating the PS plate 12 with a developing solution, a washing unit 16 for supplying and washing the PS plate 12 treated with the developing solution with washing water, A desensitizing unit 18 for applying a gum solution to the PS plate 12 to desensitize the PS plate 12;
And a drying unit 20 for drying the water.

A processing tank 22 is provided in the PS plate processor 10. In the processing tank 22, a developing tank 24 is formed at a position to be the developing section 14, and the washing section 1 is formed.
A washing tank 26 and a desensitizing processing tank 28 are formed as processing tanks at positions that are to be 6 and the desensitizing processing section 18.

A slit-shaped insertion port 32 is formed in the outer panel 30 covering the processing tank 22 so that the processing tank 2
2, a discharge port 34 is formed on the drying unit 20 side.
The cover 36 that covers the processing tank 22 includes a developing unit 1.
A re-entry insertion port (sub-insertion port) 38 for inserting the PS plate 12 is provided between the washing unit 4 and the washing unit 16. The reentry insertion port 38 is an insertion port for the PS plate 12 for performing processing in the PS plate processor 10 except for processing in the developing unit 14.

An insertion table 40 is provided outside the insertion port 32, and a rubber transport roller pair 42 is disposed on the side of the developing unit 14 where the PS plate 12 is inserted. The PS plate 12 on which the image has been printed is placed on the insertion table 40 and inserted from the insertion port 32 along the direction of arrow A, and the conveying roller pair 42 is inserted.
Sent between.

The conveying roller pair 42 is rotated by a driving force of a driving means (not shown) to draw in the inserted PS plate 12, and to the developing unit 14 at an angle of about 15 ° to 31 ° with respect to the horizontal direction. Send in.

Developing tank 2 formed in processing tank 22
Numeral 4 has a substantially mountain shape with a bottom center protruding downward, and stores a developing solution for performing a developing process of the PS plate 12. In the developing tank 24, a guide plate 44 is provided along the bottom on the lower side along the transport direction of the PS plate 12.

The guide plate 44 is provided upstream of the developing tank 24 (on the side of the insertion port 32), and has a plurality of freely rotating rollers (small rollers) 46 attached thereto. PS plate 12 sent into developing unit 14 by transport roller pair 42
The guide plate 44 is guided by the rollers 46.
Conveyed above.

In the developing tank 24, a pair of conveying rollers 48 whose outer periphery is made of rubber are disposed on the washing section 16 side.
The PS plate 12 guided and transported in a substantially U-shape in the inside 4 is nipped by the transport roller pair 48 and pulled out from the developing tank 24. The PS plate 12 is immersed in the developing solution when transported in the developing tank 24 in this manner, and unnecessary portions of the photosensitive layer exposed by image exposure swell with the developing solution,
The photosensitive layer is peeled off from the support, and an unnecessary photosensitive layer is removed according to the exposed image.

A spray pipe 50 is provided in the developing tank 24, and the developing solution in the developing tank 24 sucked by a pump (not shown) is supplied to the spray pipe 50.
Spraying on the photosensitive layer surface of the PS plate 12
Is supplied to the surface of the developing tank 24 and the developing solution in the developing tank 24 is circulated.

In the developing tank 24, a brush roller 80 is provided between the guide plate 44 and the transport roller pair 48. This brush roller 80 brushes the surface of the PS plate 12 by rotating the brush plate 80 while bringing the bristle material into contact with the surface of the PS plate 12 that is conveyed while being immersed in the developing solution, so that the unnecessary surface of the PS plate 12 Removal of the photosensitive layer is promoted.

The developing unit 14 is provided with a liquid surface cover 52 such that the lower surface is lower than the liquid surface of the developer stored in the developing tank 24. Also, the wall surface of the developing tank 24 and the liquid surface cover 5
In 2, the shield members 54A and 54B are provided on the insertion port 32 side, and the shield members 54C and 54D are attached on the washing section 24 side. The processing tank 22 is provided with shielding members 54E and 54F around the discharge port 34,
A shielding member 54G is attached to the reentry insertion slot 38.

The shielding members 54A to 54G are formed of silicon rubber or the like. The inside of the developing tank 24 is filled with a liquid level in a space in a sealed portion formed by the shielding members 54A to 54G, the pair of conveying rollers 42 and 48, and the like. Is provided to reduce the amount of air trapped in this space, and the liquid level lid 52 and the shielding members 54A to 5A are provided.
4G or the like prevents fresh air from entering near the liquid surface of the developing solution, and suppresses deterioration of the developing solution and evaporation of water due to carbon dioxide gas in the air. In addition, the liquid level cover 5
2 is provided with skewer rollers 52A and 52B on the lower surfaces of the upstream and downstream ends of the PS plate 12 in the transport direction.
The surface (mainly the photosensitive surface) is prevented from being damaged due to the PS plate 12 conveyed in the inside contacting with the lower surface of the liquid surface cover 52.

The PS plate 12 pulled out of the developing tank 24 by the transport roller pair 48 is sent to the washing section 16 while the developer adhering to the surface is squeezed down by the transport roller pair 48.

In the rinsing section 16, a transport path for transporting the PS plate 12 in a substantially horizontal state by a pair of transport rollers 58 and 60 disposed above the rinsing tank 26 is formed.
2 is sandwiched between the conveying roller pairs 58 and 60 and
Is transported horizontally above the

The washing section 16 includes a pair of conveying rollers 58, 60.
Spray pipes 62A and 62B are provided in pairs between the upper and lower sides of the PS plate 12 conveyance path. The spray pipes 62 </ b> A and 62 </ b> B are arranged so that the axial direction is along the width direction of the PS plate 12 (direction orthogonal to the transport direction), and a plurality of discharge holes are formed facing the transport path of the PS plate 12.

In the washing tank 26, washing water is stored as a processing liquid. One end of a pipe 82 is opened at the bottom of the washing tank 26. Spray pipes 62A and 62B are connected to the pipe 82 via a liquid supply pump (not shown) (not shown). Spray pipes 62A, 62B
Then, the washing water supplied by operating the liquid supply pump in synchronization with the transport of the PS plate 12 is supplied from the discharge hole to the PS plate 1.
Spout toward 2. The PS plate 12 is used to wash away the developer adhering to the surface by the washing water.

The developer that has been washed away by the washing water falls into the washing tank 26 together with the washing water. The new washing water is supplied to the washing tank 26 by means (not shown) according to the throughput of the PS plate 12.

The washing water supplied to the PS plate 12 is fed together with the developer adhering to the front and back surfaces of the PS plate 12 when the PS plate 12 is sandwiched between the transport rollers 60 and sent out. And is collected in the washing tank 26. The spraying direction of the washing water from the spray pipes 62A and 62B is such that the spray pipe 62A is on the upstream side in the transport direction of the PS plate 12 and the spray pipe 62B is
Although the downstream side in the transport direction of the plate 12 is used, the present invention is not limited to this, and may be another direction.

The desensitizing section 18 is provided with a pair of conveying rollers 56 above the desensitizing tank 28,
Is desensitized by the conveying roller pair 56.
After being conveyed through the inside, it is sent out from the discharge port 34.

The desensitizing section 18 is provided with a spray pipe 64 above the conveying path of the PS plate 12.
The spray pipe 64 has an axial direction arranged along the width direction of the PS plate 12, and has a plurality of discharge holes opposed to the transport path of the PS plate 12. In addition, the desensitization processing unit 18
A discharge unit 66 having a continuous slit formed in the width direction of the PS plate 12 is provided below the transport path of the PS plate 12.

In the desensitizing tank 28, a gum solution used for protecting the plate surface of the PS plate 12 is stored, and the gum solution is sprayed by a pump (not shown) which operates in synchronization with the transport of the PS plate 12. And supplied to the discharge unit 66. The spray pipe 64 drops the gum solution toward the PS plate 12 and spreads and applies the solution on the surface of the PS plate 12. Further, the discharge unit 66 applies the gum solution discharged from the slit to the entire back surface of the PS plate 12 when the back surface of the PS plate 12 passes while contacting the slit portion.

The PS plate 12 has a protective film formed by the gum solution applied to the front and back surfaces. The spray pipe 6
The discharge direction of the gum solution from 4 is not limited to the downstream side in the transport direction of the PS plate 12, but may be another direction. Further, although the discharge unit 66 is provided below the transport path of the PS plate 12 to apply the gum solution, the invention is not limited to this, and a spray pipe may be provided to apply the gum solution.

The PS plate 12 to which the gum solution has been applied in the desensitizing unit 18 is sandwiched between the pair of transport rollers 56 and discharged from the outlet 34 with the gum solution slightly remaining on the front and back surfaces.
It is sent to the drying unit 20.

The drying section 20 has a PS near the discharge port 34.
A support roller 68 for supporting the plate 12 is provided, and the drying unit 2
0, a transport roller pair 72 and a transport roller pair 74 are disposed near the center of the transport path of the PS plate 12 and near the discharge port 70. The PS plate 12 includes a support roller 68 and a transport roller pair 72, 74. Is transported in the drying unit 20.

Ducts 76A, 7 are provided between the support roller 68 and the transport roller pair 72 and between the transport roller pair 72 and the transport roller pair 74 with the transport path of the PS plate 12 therebetween.
6B is provided. The ducts 76A and 76B are disposed such that the longitudinal direction is along the width direction of the PS plate 12,
A slit hole 78 is provided on a surface of the S plate 12 facing the conveyance path.

When the drying air generated by the drying air generating means (not shown) is supplied from one end in the longitudinal direction, the ducts 76A and 76B direct the drying air from the slit holes 78 to the transport path of the PS plate 12. And spray it onto the PS plate 12. Thereby, in the PS plate 12, the gum solution applied to the front and back surfaces is dried, and a protective film is formed. The outlet 34 has a processor unit up to the desensitizing unit 18 for treating the PS plate 12 with the processing liquid and the drying unit 2.
A shutter (not shown) is provided to separate the air from zero, and the discharge port 34 is unnecessarily opened to prevent the heated air in the drying unit 20 from entering the desensitization processing unit 18.

In the PS plate processor 10 configured as described above, the PS plate 12 on which an image is recorded by a printing device (not shown) or the like is placed on the insertion table 40, and the insertion port 3
2, the PS plate 12 is pulled in by the conveying roller pair 42 and sent to the developing unit 14. In the PS plate processor 10, the PS plate 1 passing through the insertion slot 32 is used.
When 2 is detected by a sensor (not shown), a timer is started. The timer measures the timing of discharging the washing water from the spray pipes 62A and 62B of the washing unit 16 and the timing of discharging the gum solution in the desensitizing unit 18 together with the operation of the driving unit for transporting the PS plate 12. Used for

In the developing section 14, the PS plate 12 is fed by the pair of conveying rollers 42 at an insertion angle of 15 ° to 31 ° with respect to the horizontal direction, and is conveyed while being immersed in the developing solution. The PS plate 12 is sent out of the developer at a discharge angle in the range of 17 ° to 31 °. PS version 12
By being immersed in a developing solution in the developing unit 14, unnecessary portions of the photosensitive layer swell according to the exposed image, and the swollen photosensitive layer is removed from the support. At this time, by brushing the surface of the PS plate 12 with a brush roller 80 disposed in the developing tank 24, removal of an unnecessary photosensitive layer from the surface of the PS plate 12 is promoted.

The PS version processor 10 includes:
A plurality of brush rollers 80 may be arranged to face the surface of the PS plate 12 for brushing,
Further, the processing of the PS plate 12 may be performed without using the brush roller 80.

The PS plate 12 thus processed with the developing solution and sent out of the developing solution is drawn out by the transport roller pair 48 and sent to the washing section 16. At this time, the transport roller pair 48 squeezes the developer adhering to the front and back surfaces of the PS plate 12 from the PS plate 12.

In the rinsing section 16, rinsing water is jetted from the spray pipes 62A and 62B while the PS plate 12 is conveyed in a substantially horizontal state while being sandwiched by the conveying roller pairs 58 and 60. The transport roller pair 60 disposed downstream in the transport direction of the PS plate 12 squeezes the washing water supplied to the front and back surfaces of the PS plate 12 together with the developer remaining without being squeezed by the transport roller pair 48. While dropping, this PS version 1
2 is sent to the desensitizing unit 18.

Thus, when the PS plate 12 passes through the washing section 16, the developer remaining on the front and back surfaces is washed away.

The PS plate 12 sent to the desensitizing unit 18
Is passed between the spray pipe 64 and the discharge unit 66, and is pinched by the pair of transport rollers 56, so as to be sent out of the desensitizing unit 18 by the pair of transport rollers 56.

At this time, in the desensitizing unit 18, the gum solution is supplied to the spray pipe 64 and the discharge unit 66, and the gum solution is applied to the front and back surfaces of the PS plate 12. The transport roller pair 56 forms a thin film of the gum solution on the front and back surfaces of the PS plate 12 by pinching and sending out the PS plate 12, and squeezes excess gum solution from the front and back surfaces of the PS plate 12.

The PS plate 12 to which the gum solution has been applied is sent from the discharge port 34 to the drying section 20 by the pair of conveying rollers 56. The shutter (not shown) provided at the discharge port 34 is used for controlling the timing of starting the processing of the PS plate 12 or the PS timing.
The plate 12 operates at the timing of being sent out from the desensitizing unit 18 to open the discharge port 34, and the drying air from the drying unit 20 unnecessarily enters the desensitizing unit 18, and the gum solution is supplied to the conveying roller pair 56. To prevent sticking,
The air enters from the outlet 34 and reaches the developing unit 14 to prevent the developer from being deteriorated by carbon dioxide in the air, or the moisture in the developer, washing water, and moisture in the gum solution evaporate. It is prevented from getting out of the discharge port 34.

In the drying section 20, drying air is blown from the ducts 76A and 76B while the PS plate 12 is transported by the support roller 68 and the transport roller pairs 72 and 74. As a result, the PS plate 12 is discharged from the outlet 70 after the protective film is formed by the applied gum solution.

By the way, the PS plate processor 10 includes:
A filter is provided for removing solids in a processing solution such as a developing solution, washing water, and a gum solution. The filter is accommodated in a filter case provided in the middle of a pipe through which the processing liquid passes. This filter case includes, for example,
The developing solution is provided in a conduit for supplying the developing solution in the developing tank 24 to the spray pipe 50. When the developing solution in the developing tank 24 is supplied to the spray pipe 50 and circulated by a circulation pump (not shown), Is removed (filtered) by a filter provided in a filter case.

The washing section 16 and the desensitizing section 18
In each case, the middle of the pipeline for supplying the washing water in the washing tank 26 to the spray pipes 62A and 62B and the middle of the pipeline for supplying the gum solution in the desensitizing tank 28 to the spray pipe 64 and the discharge unit 66 A filter case is provided in each of the devices (both are not shown), and filters solids in the washing water and the gum solution, respectively. Note that a conventionally known configuration can be applied to a pipe line in which the filter case is provided, a mounting position, and the like, and a detailed description thereof is omitted in the present embodiment.

Here, the filter case 100 applied to the PS plate processor 10 will be described with reference to FIGS.

As shown in FIG. 2, the filter case 100
Has an outer case 102. As shown in FIG.
The outer case 102 is formed in a substantially cylindrical shape, and has one surface open along the axial direction.

As shown in FIGS. 2 and 3, an outer case 102 is connected to a bottom portion 108 of an inlet tube 106 into which the processing liquid is fed, and a delivery pipe 10 through which the processing liquid is sent out.
4 is connected to the outer peripheral portion. Thereby, the introduction pipe 10
The processing solution fed into the outer case 102 from 6 flows out from the delivery pipe 104. A bracket 110 is attached to an outer peripheral portion of the outer case 102 so that an open surface (a surface opposite to the bottom portion 108) is substantially upward at a predetermined position in the PS plate processor 10. Attached to

As shown in FIG. 3, the outer case 102 has an opening 102A at the upper end, and a female screw 1 is formed around the lower side of the opening 102A (upper end of the outer case 102).
12 are provided. The male screw portion 112 is provided with a rib 114. The rib 114 is attached to the outer case 10.
A predetermined angle range (for example, 90
°), the outer case 102 is provided as a pair at a position protruding from the outer peripheral surface of the outer case 102 in the radial direction and facing each other.

Each of the ribs 114 has an outer case 10
A stopper 116 extending downward (toward the bottom portion 108) is provided at one end side along the circumferential direction of No. 2.
The rib 114 is inclined such that the stopper 116 side is on the lower side.

As shown in FIG. 2, a cap 118 is attached to the upper end of the outer case 102. Outer case 102
The upper part is closed and closed by mounting the cap 118.

As shown in FIG. 4 and FIG.
8 has a pair of protrusions 120 on the inner surface.
The protrusion 120 is provided so as to project radially inward from the inner surface of the cap 118. Also, the cap 11
8, a packing 122 is attached to the outer case 102 at a position facing the opening 102A.

The cap 118 is put on the outer case 102 so that the projection 120 is located between the pair of ribs 114 provided on the outer case 102. Thereby, the protrusion 120 can be opposed to the lower surface of the rib 114. In this state, the cap 118 is turned (about 90 ° in the direction of arrow C) so that the protrusion 120 is directed toward the stopper 116, so that the protrusion 120 slides on the lower surface of the rib 114 and abuts on the stopper 116.

At this time, since the rib 114 is inclined downward, the opening 102 A of the outer case 102 is pressed against the packing 122 provided on the cap 118, and the outer case 102 is sealed by the cap 118.

On the other hand, as shown in FIG.
Has an inner cylinder 124 protruding inward of the outer case 102. The inner cylinder 124 has an open end, and when the cap 118 is attached to the outer case 102, the opened end fits into the opening of the delivery pipe 106 (not shown).

A plurality of openings 126 extending in the axial direction are formed on the outer peripheral portion of the inner cylinder 124.

As a result, the outer case 1
02 is supplied to the inner cylinder 1 through the opening 126.
24, and flows into the delivery pipe 104.

A filter element 128 is mounted on the inner cylinder 124. As shown in FIGS. 4 to 6, in the filter element 128, a filter 132 is provided on an outer peripheral portion of a frame 130 framed into a substantially cylindrical shape so as to close an opening of the outer peripheral portion of the frame 130. As shown in FIGS. 4 and 5, the frame body 130 is formed with a flange portion 134 extending radially outward at one end in the axial direction.

The frame 130 has an inner diameter of the cap 118.
The filter element 128 is slightly larger than the outer diameter of the inner cylinder 124 provided in the
The inner cylinder 124 is inserted into the frame 130 from the fourth side, so that the inner cylinder 124 is attached to the cap 118. At this time, as shown in FIGS. 5 and 6, the length along the axial direction of the inner cylinder 124 is slightly longer than the length along the axial direction of the frame 130, and the tip of the inner cylinder 124 is It protrudes from the frame 130.

The frame 130 of the filter element 128 is provided with a pair of substantially rectangular cuts 136 that form a hole at the end opposite to the flange 134.
An arrow D of a cut 136 is provided at the tip of the frame 130.
A rectangular projection 138 is formed on the opposite side to the direction, and a rectangular projection 140 is formed between the cuts 136.

Further, an inclined portion 142 is formed at the tip of the frame 130 between the cut 136 and the projection 140. The inclined portion 142 is formed such that the front end of the frame 130 gradually extends from the notch 136 toward the projection 140 toward the flange 13.
It is inclined away from 4.

On the other hand, the frame 1 of the filter element 128
The front end of the inner cylinder 124 inserted into the
A claw 144 is formed at a position facing the notch 136 of zero. The claw portion 144 protrudes radially outward from the outer peripheral portion of the inner cylinder 124. Also, as shown in FIG.
A packing 146 is provided around the inner cylinder 124 so as to face the flange portion 134 of the eighth.

The notch 136, the projection 140, the inclined portion 142 and the like may be provided at the lower end of the inner cylinder 124, and the claw 144 may be provided at the lower end of the frame 130.

The inner cylinder 124 has a filter element 128
When inserted into the frame 130, the claw portion 144 enters the cut 136 and faces the inclined portion 142. In this state, by turning the filter element 128 in the direction of arrow D, the claw portion 144 of the inner cylinder 124 moves until it comes into contact with the projection 140 while slidingly contacting the inclined portion 142 of the frame 130.

At this time, the frame 130 of the filter element 128 is
Relatively moves toward the cap 118, and the flange 13
4 is pressed against the packing 146.

Thus, the filter element 128
The frame 130 is held between the claws 144 and the packing 146 provided on the cap 118. That is,
The filter element 128 is attached to the frame 130 by the inner cylinder 124.
The frame 130 is tightly sandwiched between the claw 144 and the packing 146 by being turned by about 90 ° in the direction of the arrow D in a state where is inserted, and is attached to the cap 118.

The filter element 128 includes the cap 1
By being inserted into the outer case 102 while being attached to the filter case 18, it is loaded into the filter case 100.

In the filter case 100 in which the filter element 128 is loaded as described above, the processing liquid sent from the introduction pipe 106 into the outer case 102 is transferred to the inner cylinder 124.
And flows through the filter 132 of the filter element 128 provided on the outer periphery of the inner cylinder 124. At this time, the solid matter is filtered off by the filter 132. Thereafter, the processing liquid flows into the delivery pipe 104 and is discharged from the outer case 102.

On the other hand, the filter 132 provided in the filter element 128 may be clogged with solids that have been filtered out of the processing liquid and adhere to the filter 132. For this reason, maintenance such as cleaning or replacement of the filter element 128 (the filter 132) is required periodically or according to the clogged state of the filter 132.

That is, the solid matter in the processing solution is
By adhering to the filter 32, the filter 132 gradually decreases the transmittance of the processing liquid. This may cause a decrease in the circulation amount of the processing liquid and the like, and a decrease in the processing performance of the PS plate 12 due to the decrease in the circulation amount.

The clogging of the filter 132 imposes a large load on a pump for circulating the processing liquid and a motor for driving the pump. As shown in FIGS. 4 and 5, the filter element 128 applied to the present embodiment includes a frame body 130 with an end on the flange 134 side.
Narrow opening 148 where filter 132 is not provided
Is provided. Since the opening 148 is provided in the cap 118 that covers the upper part of the outer case 102, the processing liquid does not normally flow. However, when the filter 132 is clogged, the permeation amount of the processing liquid is greatly reduced, the processing liquid is accumulated in the outer case 102, the liquid level rises, and when the liquid reaches the opening 148, the inner cylinder It flows into 124. This prevents the clogging of the filter 132 from imposing a large load on a pump or the like for circulating the processing liquid, thereby hindering the operation.

In the filter case 100, when performing maintenance of the filter element, first, the cap 118 is turned by about 90 ° in the direction opposite to the direction of arrow C. Thus, when the projection 120 provided on the cap 118 comes off the rib 114 of the outer case 102, the cap 118 can be removed, and the cap 118 can be removed from the outer case 10.
By separating from the outer case 102, the filter element 128 attached to the cap 118 can be pulled out from the outer case 102.

Further, the filter element 128 moves the frame 130 to the inner cylinder 124 (cap 118) by the arrow D.
Turn about 90 ° in the opposite direction to the claw 1 of the inner cylinder 124.
The claw portion 144 faces the cut 136 by rotating and locking the projection 44 by contacting the projection 44 with the projection 138. Thus, the filter element 128 can be removed from the inner cylinder 124.

As described above, in the filter case 100,
The operation of turning the cap 118 and the filter element 12
By turning the filter 8, the filter element 128 can be easily removed.

On the other hand, when the filter element 128 is loaded into the outer case 102, first, the inner cylinder 124 provided on the cap 118 is inserted into the frame 130 of the filter element 128, and the notch formed in the frame 130 is inserted. The claw 144 of the inner cylinder 124 is inserted into the 136. In this state, the filter element 128 is mounted on the cap 118 by rotating the frame 130 by about 90 ° in the direction of arrow D.

At this time, since the claw 144 of the inner cylinder 124 slides on the inclined portion 142 of the frame 130 and moves, when the claw 144 comes into contact with the projection 140 of the frame 130,
The filter element 128 is brought into close contact with the cap 118 or the inner cylinder 124.

Thereafter, the filter element 128 attached to the cap 118 is inserted into the outer case 102, and the outer case 102 is covered with the cap 118. Further, the cap 118 is turned by about 90 ° in the direction of arrow C. At this time, the protrusions 120 provided on the cap 118
The opening 102 </ b> A of the outer case 102 is pressed against the packing 122 by sliding while moving. The outer case 102 and the cap 118 are closely attached.

As described above, in the filter case 100,
By inserting the inner cylinder 124 provided in the cap 118 into the frame 130 of the filter element 128 and turning the frame 130 in the direction of arrow D, the filter element 128 can be mounted on the cap 118. The filter element 128 can be loaded into the outer case 102 by a simple operation of turning the cap 118 in the direction of arrow C by about 90 ° while the filter element 128 is inserted into the outer case 102.

Further, since the stopper 116 provided on the rib 114 of the outer case 102 and the projections 138 and 140 provided on the frame 130 of the filter element 128 limit the range in which the cap 118 and the filter element 128 are turned, The filter element 128 can be securely attached and detached.

The above-described embodiment shows one example of the present invention, and does not limit the configuration of the present invention. For example, the outer case 102 and the cap 11
8. The filter element 128 and the like are not limited to a cylindrical shape, and may have an arbitrary shape such as a rectangular cylindrical shape.

In the present embodiment, the PS plate processor 10 for processing the PS plate 12 as a photosensitive material has been described as an example. However, the present invention is not limited to a printing plate such as the PS plate 12 and the like. The present invention can be applied to a photosensitive material processing apparatus having an arbitrary configuration for processing the photosensitive material with a processing solution.

[0091]

As described above, according to the present invention, there is obtained an excellent effect that the filter element can be easily attached / detached and workability during maintenance such as cleaning of the filter can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a PS plate processor applied to an embodiment.

FIG. 2 is a schematic perspective view showing the appearance of a filter case.

FIG. 3 shows a filter case with a cap removed.
It is the schematic perspective view seen from the different direction.

FIG. 4 is a schematic perspective view showing a filter element and a cap.

FIG. 5 is a schematic perspective view showing a state where a filter element is mounted on a cap.

FIG. 6 is a schematic perspective view showing a state in which the filter element is mounted on a cap, viewed from a different direction from FIG. 5;

[Explanation of symbols]

 Reference Signs List 10 PS plate processor 12 PS plate 24 Developing tank 26 Washing tank 28 Desensitizing tank 100 Filter case 102 Outer case 104 Outgoing pipe 106 Introducing pipe 114 Rib 116 Stopper 118 Cap 120 Projecting part 124 Inner cylinder 128 Filter element 130 Frame 132 Filter 136 Notch (hole, holding means) 142 Inclined part (holding means, slope) 144 Claw

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 35/02 Z

Claims (2)

[Claims] 1. An outer case formed in a substantially cylindrical shape and provided with a treatment liquid introduction pipe and a delivery pipe, and a cap provided on a cap for closing an opening of the outer case, and the cap is attached to the outer case. And an inner cylinder through which the processing liquid sent from the introduction pipe is passed toward the delivery pipe while being accommodated in the outer case, and a substantially cylindrical frame body that can be accommodated in the outer case. A filter element provided with a filter on the surface of the filter element, the filter element allowing the treatment liquid flowing to the delivery pipe to pass through the filter when the inner cylinder is inserted into the frame, and a frame of the filter element or the inner cylinder. A claw portion provided on any one of and protruding along a radial direction; and the frame provided for the filter element or the inner cylinder provided on the other of the inner cylinder and the inner cylinder attached to the filter element. A hole is formed in which the claw portion is inserted when inserted, and by relative rotation of the filter element and the inner cylinder, a holding means for relatively moving and holding the filter element toward the cap, A filter case comprising: 2. A slope portion for relatively moving the filter element toward the cap by rotating the filter element around the inner cylinder while the holding means inserts the claw portion into the hole. The filter case according to claim 1, comprising: