JP2719643B2 - Sensitive material processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a photosensitive material processing apparatus for processing a silver salt type photosensitive material such as photographic paper, photosensitive paper for direct plate making, or a film.

[Prior art]

2. Description of the Related Art Conventionally, in a copying camera for directly making a printing plate for light printing, an exposed photosensitive material is treated with a static developer. Sensitive materials used in such applications are mainly made of, for example, a layer which prevents halation on the surface of a water-resistant base (paper), a silver salt emulsion layer which feels light, and gelatin in which physical development nuclei such as silver are dispersed. A hydrophilic layer is formed. The properties of the emulsion layer are changed by the irradiation of light, and the diffusion of the reduced silver to the surface layer is inhibited in the emulsion layer which has been irradiated with the light, even if a developer is applied. On the other hand, in the emulsion layer which has not been irradiated with light, the silver halide is complexed and diffuses into the surface layer, where it is physically developed to precipitate metallic silver and become sensitized. After that, if a stabilization treatment is performed and a desensitization treatment is performed, only the portion where the metallic silver is deposited shows lipophilicity and the printing ink is applied, so that a printing plate is obtained. Processing such as development and stabilization of the photosensitive material is performed in a processing tank filled with a processing solution. Therefore, the processing liquid is attached to the photosensitive material carried out of the processing tank, and a pair of opposing rollers (a so-called squeezing roller pair) is arranged downstream of the processing tank to thereby remove the processing liquid. ing.
That is, the processing liquid is squeezed out by the pair of squeezing rollers so that the processing liquid is not brought into the next process. Such a pair of squeezing rollers constitutes a part of a transport system which not only squeezes out the processing liquid adhering to the surface of the photosensitive material but also pulls out the photosensitive material from the processing tank and sends the photosensitive material to the next step.

[Problems to be solved by the invention]

However, in such a photosensitive material processing apparatus, the old processing liquid squeezed by the opposing roller pair accumulates on the photosensitive material carry-in side of the roller pair. There was a problem of flowing down and flowing.
When the old processing liquid which has flowed back to the processing tank, the deterioration of the processing liquid is accelerated. When the processing liquid is a developing liquid, the deterioration of the developing performance is inevitable. Furthermore, when an old processing solution flows over the surface of the photosensitive material,
There is also a problem in that it reacts with the light-sensitive material to cause development unevenness and the like, resulting in a reduction in processing quality. In addition, sludge in the processing liquid (arising from cutting powder or melted gelatin generated when the roll-shaped photosensitive material is cut into a predetermined size) adheres to the roller pair for squeezing the processing liquid attached to the photosensitive material. In some cases, the photosensitive material was deposited, and a step was formed on the outer side in the width direction of the light-sensitive material, resulting in a poor aperture. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to appropriately squeeze out a processing liquid adhering to a light-sensitive material carried out of a processing tank. The configuration of the present invention that achieves the above object will be described below.

[Means for Solving the Problems]

The photosensitive material processing apparatus of the present invention is a processing apparatus for processing a silver salt type photosensitive material such as a photographic paper, a photosensitive paper or a film for direct plate making, and a processing tank for storing the processing liquid for the photosensitive material. And a photosensitive material transporting means for carrying the photosensitive material out of the processing tank at a predetermined elevation angle, and sandwiching the pair of rollers pressed against each other with the photosensitive material transported from the processing tank. At a possible position, the upper roller of the roller pair is displaced downstream with respect to the conveying direction of the photosensitive material, and the roller pair is rotated in the feeding direction of the photosensitive material to rotate the roller pair. It is characterized in that a treatment liquid removing means for squeezing the treatment liquid adhered to the surface is provided. It is also desirable that a scraper is provided in contact with the outer periphery of at least one of the rollers of the roller pair to scrape off the processing liquid, sludge and other deposits on the roller surface.

[Action]

The photosensitive material processing apparatus of the present invention having the above-described configuration is configured such that the photosensitive material is transported by the photosensitive material transport unit into the processing solution in the processing tank that stores the processing solution for the photosensitive material, and the loaded photosensitive material is processed by the processing solution. After being processed, it is carried out at a predetermined elevation angle. The photosensitive material is carried out with the processing liquid attached to the surface thereof. The transported photosensitive material is sandwiched between pairs of rollers pressed opposite to each other, and the processing liquid adhering to the surface of the photosensitive material is squeezed out by rotating the roller pair of the processing liquid removing unit in the direction of feeding the photosensitive material. . At this time, the photosensitive material that has been carried out at a predetermined elevation angle is sandwiched between a pair of rollers whose upper rollers are displaced downstream with respect to the transport direction of the photosensitive material. The roller is directed downward by an angle corresponding to the deviation amount (angle) of the roller. Therefore, the photosensitive material curves upward before the roller pair. Thereafter, since the photosensitive material is sandwiched between the roller pairs and squeezed, the processing liquid squeezed from the surface of the photosensitive material is curved upward (conveyed downward) with the outer periphery of the upper roller during the transportation of the photosensitive material. And stay in the space formed by Therefore, the old processing solution
It does not travel along the surface of the photosensitive material being transported or return to the processing tank. In addition, if a scraper is provided in contact with the outer periphery of at least one of the rollers of the roller pair, it is possible to scrape off the processing liquid, sludge, and other deposits on the roller surface, thereby preventing the sludge from adhering and accumulating on the rollers. .

【Example】

The configuration and operation of the present invention described above will be further clarified.
Therefore, a preferred embodiment of the photosensitive material processing apparatus of the present invention will be described below.
Will be described. FIG. 1 is an embodiment of a photosensitive material processing apparatus.
FIG. 2 is a schematic configuration diagram of a developing processing apparatus.
Main part showing the slit exposure type copying camera 1 incorporating the camera
It is a side sectional view. The slit exposure type copying camera 1
Is a device for producing a printing plate for light printing by copying the same. First, according to FIG.
Will be described. As shown,
The lit-exposure type copying camera 1 has a projection
It incorporates an optical system and a photosensitive material processing device.
Console panel 4 provided on the upper surface of the
Reciprocable in horizontal direction (left-right direction in the figure) along the surface
Document holder 10 and the sheet-shaped photosensitive material PM
The photosensitive material transport device 20 that transports to the light position and the document holder 10
Irradiates the held original with light and is reflected by the original
Projection optical system 30 that projects light onto the upper surface of photosensitive material PM to expose it
And developing and stabilizing the exposed photosensitive material PM
Development processing device 40 and photosensitive material unloaded from development processing device 40
Drying unit 50 for drying PM, various motors and
And an electronic control unit 60 that controls the drive of the solenoid valves and the like.
You. The console panel 4 is used to set exposure conditions and the like.
Seed setting switch, power switch, start switch, etc.
Is provided, and is operated by an operator. Con
Each switch on the sole panel 4 is connected to the electronic control unit 60
Have been. The document holder 10 is a platen made of a transparent glass plate.
11 and an openable / closable document cover 12.
The space between the platen 11 and the document cover 12 is held downward. This
The original holder 10 is driven by a motor 13 provided in the housing 2.
Not shown, such as sprockets, chains, belts, etc.
Reciprocatingly driven in the horizontal direction via a dynamic system, and irradiation for exposure
The original is conveyed to the light source. The photosensitive material transport device 20 includes a first photosensitive material roll 21 and a second photosensitive material.
Sending out the photosensitive material from the first photosensitive material roll 21 in addition to the roll 22
Dedicated roller pair 23, photosensitive material feed from second photosensitive material roll 22
Feeding roller pair 24 and feeding of photosensitive material from each photosensitive material roll
With two roller pairs 25 and 26 commonly used for
If necessary, either one of the photosensitive material rolls 21 or
Sends out a sheet-like photosensitive material PM from 22. In this embodiment
Is a silver master (product name: Mitsubishi)
SLM-R2) manufactured by Paper Co., Ltd. was used, but silver halide plate making
If it is photosensitive paper, use Super Master (Product name: Agfu
Agagevart model SPP) etc. can also be used.
You. FIG. 2 shows that the photosensitive material PM is composed of three sets from the first photosensitive material roll 21.
Roller pairs 23, 25, 26
It shows a state in which Using the photosensitive material PM of the second photosensitive material roll 22
The roller pair 24 and 2 instead of the roller pair 23
The photosensitive material PM is transferred to the second photosensitive material row by the set of roller pairs 25 and 26.
Conveyed from the file 22. The first photosensitive material roll 21 or the second photosensitive material roll 22
Of the photosensitive material PM from the
It is performed in synchronization with the movement. The photosensitive material PM thus transported is composed of two roller pairs 25 and 26.
Exposure is performed at the exposure position set between
The cutting device 27 provided on the back side of the photosensitive material PM
And cut to the dimensions set from the console panel 4.
You. The projection optical system 30 for exposing the photosensitive material PM
Light for irradiating light across the width of the held document
Source 31 and three mirrors 32 for reflecting the reflected light LB from the original
a mirror group 32 composed of a, 32b, and 32c and a photosensitive material PM at an exposure position
Projection lens 33 that forms an image of the original on the surface, and upper surface of photosensitive material PM
And a slit 34 for limiting the width of the reflected light LB projected on the
I can. A projection lens 33 and a mirror 32b constituting a mirror group 32,
32c is a mirror support plate 36 mounted on a tilt base 35.
And the lens support 37, respectively.
The projection magnification in the projection optical system 30 is set to a value of 1.
You. The mirror support plate 36 and the lens support 37
Is positioned on the tilt table 35 during alignment of the projection magnification.
Position is adjusted, and after alignment is complete,
It is. Light emitted from the light source 31 toward the original is reflected by the lower surface of the original.
The reflected light LB is sequentially reflected by each mirror of the mirror group 32.
After passing through the projection lens 33 and the slit 34,
An image is formed on the photosensitive surface of PM. Therefore, the feeling of being conveyed
On the photosensitive surface of the material PM, there is a slit-shaped image
Is projected. The photosensitive material PM is transported horizontally on the original holder 10.
The document holder 10 in the horizontal direction.
When the movement is completed, exposure of the entire document is completed. That
Thereafter, the photosensitive material PM is cut by the cutting device 27. The photosensitive material PM is uniformly exposed to the lower side of the roller pair 26.
A plurality of LEDs 38 are provided in a line to
LED38 is driven to irradiate the photosensitive material PM to reduce the size
When the exposure cannot be performed with the reflected light LB from the original
The peripheral part of the material PM is skipped as an image forming unnecessary part.
You. The development processing device 40 is installed below the projection optical system 30.
The photosensitive material PM introduced through the introduction roller 41
A development process and a stabilization process are performed. This present
The image processing device 40 is a developer main tank for storing the developer.
42 and stabilizer main tank 43 for storing stabilizer
Possible, rollers and other components are driven together by a motor (not shown)
And is housed in the housing 2
Have been. The details of the configuration of the development processing device 40 will be described later.
Will be described. Along the path of the photosensitive material PM, a dry
A drying unit 50 is provided. This dried unit 50
Applies tension to the photosensitive material PM processed by the development processing device 40.
Pairs of rollers 51 and 52 for conveying while moving,
And a transfer tray 53 provided between the transfer trays 53.
Sensitive material provided at a position facing the photosensitive material PM across the transport path
The drying heater 54 and the fan 55 and the outside of the housing 2 are installed.
An external tray 56 for storing the attached and dried photosensitive material PM
Prepare. Accordingly, the exposed photosensitive material PM is transferred to the developing device 40.
After the development and stabilization process, the photosensitive material is dried by the heater 54 for drying the photosensitive material.
It is dried and sent to an external tray 56 outside the housing 2. like this
Then, a printing plate for offset printing is manufactured from the original. Next, a development process for developing and stabilizing the photosensitive material PM
The device 40 will be described. In the description of the development processing device 40,
In addition to FIG. 1 showing the schematic configuration, perspective views (FIGS.
Figures) and cross-sectional views (Fig. 5) are used as appropriate. As shown in FIG. 1, this development processing device 40
The exposed photosensitive material PM introduced from the
Developing unit 70 that develops using developer in tank 42 and stable
Developed using the stabilizer in the main tank 43
The material PM is subjected to a stabilization process and is dried with a 50 unit roller.
Stabilization processing unit to send out to pair 51 (hereinafter referred to as the stability unit)
72. The developing unit 70 includes a developer mainter as a developer supply system.
In addition to the ink tank 42, this developer main tank 42 is
Liquid that receives developer from the reservoir tank 42 and maintains the liquid level at a constant level.
Surface management cylinder 74 and developing from liquid level management cylinder 74 via conduit 76
A developer cistern tank 78 into which the liquid flows,
Opens and closes conduit 79 for developer outflow from turn tank 78
Inflow solenoid valve 80 and developer nozzle 82 for discharging developer
And The developer nozzle 82 has a throttle section (the
(Refer to Fig. 5)
Of the developing solution from the tip of the developing solution nozzle 82 during the period.
Has restricted. Discharge of developer from the tip of developer nozzle 82
The amount is the pressure applied to the portion of the throttle, i.e.,
It depends on the height of the liquid surface and the diameter of the orifice.
In this embodiment, since the liquid level is kept constant,
When the input solenoid valve 80 is opened, the flow rate of the developer
It was kept constant regardless of the amount of developer in the in-tank 42
It is. The developer cistern tank 78 has a liquid inflow chamber
A partition plate 84, which is divided into a liquid storage chamber 78b and a liquid storage chamber 78b,
It stands upright from the bottom, and a conduit 76 opens in the liquid inflow chamber 78a.
Has been spoken. On the other hand, on the bottom of the liquid
According to the amount of liquid in the tank and the heater 86
A developer cistern tank 78 having a float 87 that moves up and down
And a float sensor 88 for detecting the amount of liquid in the
You. It is also connected to the bottom of the developer system tank 78.
At the entrance of the duct 79, dust is removed from the developing solution flowing out.
A mesh filter 90 to be removed is provided. Therefore, from the developer main tank 42 through the conduit 76
The flowing cold developer first flows into the liquid inflow chamber 78a.
It flows over the upper end of the partition plate 84 and into the upper part of the liquid retaining chamber 78b. Stagnation
The developer in the reservoir 78b is heated by the heater 86. He
The temperature of the developer by the heater 86 is controlled by an electronic control unit described later.
Is maintained at a predetermined temperature. Developer maintained at a predetermined temperature
When the inflow electromagnetic valve 80 opens, the developer nozzle 82
leak. Next, a developing tank 96 where the development of the photosensitive material PM is actually performed is performed.
The outline of the operation of the surrounding schematic configuration will be described. Present
Below the introduction roller 41 for introducing the photosensitive material PM into the image section 70,
Fig. 5 Entrance row that rotates in the direction of arrow X and sends photosensitive material PM
La pair 92 is provided, and further below it,
Guides the photosensitive material PM in contact with the material PM and transfers it to the photosensitive material PM during transport.
A so-called waist-free roller 94 is provided. The developing tank 96 has a substantially U-shaped cross section and is shown in FIG.
The width of the photosensitive material PM has a width corresponding to
Form 95. The developing tank 96 contains a developing process.
A little distance from the bottom of the developing tank 96 over the width of the tank 96
The developer supply roller 98 is disposed at a position where the separation is left.
You. Therefore, the developer is stored in the storage section 95 of the development processing tank 96.
Then, the lower part of the developer supply roller 98 is partially immersed in the developer.
Pickle. The surface of the developer supply roller 98 is made of a spongy material
And the bubbles that make up the sponge are individually
It is an independent bubble (single bubble). Developer supply
As shown in FIG. 4, the roller 98
The image liquid is temporarily stored between the developing liquid supply roller 98 and the developing liquid supply roller 98.
An image liquid temporary storage unit 100 is assembled. The bottom of the developing tank 96 is shown in FIGS.
As shown, a bottom liquid reservoir 101 is formed in the width direction.
And a plurality of communication openings opened at the bottom of the developing tank 96.
The holes 102 allow the developer to flow. Bottom liquid
Inside the reservoir 101, a rod-shaped heater 103 for heating the developer is provided.
Two are arranged. At the bottom of the center of the bottom reservoir 101
Is connected to this bottom via a discharge solenoid valve 104 that opens and closes the pipeline.
A waste liquid receiving tray 1 that communicates with the liquid storage chamber 101 and receives used developer
A developer discharge pipe 108 for discharging to 06 is connected. On the unloading side of the photosensitive material PM in the developing tank 96,
Guide plate 110 having a predetermined elevation angle α
You. Guide plate 110 reduces contact resistance with photosensitive material PM
(See Fig. 3).
Of the developed photosensitive material PM toward the squeezing roller pair 109 in the fixed section 72
Form an entry path. The lower surface of the guide plate 110 has a self-temperature
A heating planar heater 112 having a control function is attached.
I have. As shown in FIG. 3, the planar heater 112
The mounting bracket 113 provided on the treatment tank 96 side and other metal
A detailed configuration of the developing tank 96 integrally fixed to the guide plate 110 will be described. Development
As shown in FIG. 3, the storage section 95 of the treatment tank 96 has a curved periphery.
On both sides of the face plate 120, a substantially half-moon shaped side plate 122 (in the figure,
(The side plate on the left side is omitted)
It is formed by fixing. Guide plate 1 for peripheral plate 120
At the approximate center of the 10 side, a through hole 126 penetrating the peripheral plate 120
Is provided. The developer is supplied from the developer nozzle 82.
When the amount of liquid in the storage section 95 increases due to the
Outflow from 126. Therefore, the developer level in the reservoir 95 is
Is held at the height of the through hole 126. The discharge solenoid valve 104 immediately below the developing tank 96 has a
As shown in FIG. 1, a drip-proof cover 114 is provided,
Prevents developer from dropping from bath 96 or guide plate 110
doing. The temporary developer storage 100 is shown in FIGS. 4 and 5.
As shown in detail, both ends of the developer supply roller 98 are
Two end face plates 134 that contact the roller while allowing rotation of the roller,
The end plate 134 is fixed at both ends.
And a support plate 136. Also, the upper plate constituting the support plate 136
At the position corresponding to the center of 136a, the tip of the developer nozzle 82,
A liquid passage hole 138 is provided, while a spine constituting a support plate 136 is provided.
The plate 136b is urged toward the developer supply roller 98,
Plate that is a stainless steel plate that contacts the outer periphery of the roller 98
Nine 140 is provided. Immediately below the liquid passage hole 138, start from the center of the front end of the upper plate 136a.
The liquid receiving plate 142 is provided continuously toward the leaf spring 140.
A slight gap is provided between the tip of the liquid receiving plate 142 and the leaf spring 140.
Is provided. The developer supply roller 98 and both end faces
The end face plate 134 in contact and the plate in contact with the outer peripheral surface of the roller 98
The portion surrounded by the spring 140 is covered with the developer supply roller 98.
In the part of, together with the fact that it rotates upward,
Temporarily store the developer dropped from the developer nozzle 82
be able to. This part is called a liquid pool part 143. The liquid receiving plate 142 is used to supply the developing solution to the developing solution supply roller 98.
Plays the role of efficiently spreading in the axial direction of the
Even if the plate 142 is not provided, the developer temporarily accumulates in the liquid reservoir 143.
From that of the developer supply roller 98 spreads in the axial direction.
No. The developer dropped from the developer nozzle 82 is shown in FIG.
As shown in FIG. 5, the liquid receiving plate 1
42, formed between both ends of the liquid receiving plate 142 and the leaf spring 140
Flows down along the surface of the leaf spring 140 from the slight gap
You. In other words, the developing solution supply roller 98 spreads along the axial direction.
It reaches the liquid pool part 143 while falling, and is temporarily stored here.
It is. Some of the developer stored in the liquid reservoir 143 is
Individual bubbles in the single bubble layer on the surface of the image supply roller 98
And the developer supply roller 98 in the direction of arrow Y in FIG.
Pumped out with the rotation of. The lower portion of the developer supply roller 98 is stored in a developing tank 96.
Since it is immersed in the retained developer,
The discharged new developer is already stored in the storage section 95.
Is supplied to the developing solution. New developing solution
In 96, the photosensitive material PM is diffused and supplied to the carry-in side. Developer
Is supplied and the developer in the reservoir 95 increases, a new
With the removal of photosensitive material PM from the amount equivalent to the supplied developer
(Ex-developer) excluding the amount of developer lost
Flows out of the through hole 126 of the peripheral plate 120 to the outside, and
The amount of the developer in the bath 96 is balanced. The developer also flows into the bottom liquid storage chamber 101,
It is heated by two built-in rod heaters 103
You. The heated developer is supplied to the reservoir 95 through the communication hole 102.
Convection between and. Energization of the rod-shaped heater 103 is a temperature detector
Control based on developer temperature detected by
The developer solution in the developing tank 96
Is raised in a very short time and maintained at a predetermined temperature. When the photosensitive material PM passes through the developer reservoir 95 of the developing tank 96,
For example, sludge is mixed into the developer with the development of the photosensitive material PM.
Enter. These sludges are collected from the bottom 95
After flowing into the chamber 101 and the discharge solenoid valve 104 is opened, the developing
Along with the liquid, the waste liquid receiving tray 106
Is discharged. Next, conveyance of the photosensitive material PM will be described. Entrance roller pair
The exposed photosensitive material PM sent by 92 is
While entering the storage section 95 while being guided by the
It passes through the inside of the storage part 95 along the inner peripheral surface of 0. Inside storage unit 95
Reacts with the developer stored in the
Processing is started. The developer supply roller 98 and the peripheral plate 120
After passing through the storage section 95 after passing through the gap of
A diaphragm provided at the entrance of the stabilizer 72 along the upper surface of the plate 110
Is sent out to the roller pair 109. On guide plate 110
The ambient temperature is controlled by the sheet heater 112 having a temperature control function.
Is maintained near the predetermined temperature by the heating
While being transported on the guide plate 110, the surface of the photosensitive material PM
The developing process of the photosensitive material PM is continued by the attached developer.
You. The developer adhering to the surface of the photosensitive material PM
It is squeezed and removed by the squeeze roller pair 109 provided at the entrance.
Left. Next, the stabilizing part, which is a stabilizing system
72 will be described with reference to FIG. The above
The same member as the developing unit 70 or a member having the same function
The description is omitted, and the description in the developing section 70 is omitted.
Auxiliary code A is added to the code (numerical value) used.
And The stabilizing section 72 serves as a stabilizing agent supply system.
Stabilizer main tank 43
Liquid level control cylinder 74A to which the stabilizer main tank 43 is attached and detached,
Stabilizer cistern tank 7 with partition plate 84A standing inside
8A, liquid level control cylinder 74A and stabilizer cistern tank 78A
Stabilization with conductive tube 76A and inflow solenoid valve 80A
It has an agent nozzle 82A and the like. Stabilizer cistern tank 78A
In the same manner as the developer cistern tank 78, the float 87
Also equipped with float sensor 88A with A and mesh filter 90A
Has been obtained. Inlet solenoid valve 80A and stabilizer nozzle 82A
Stabilizer from the cistern tank 78A
When flowing out, the stabilizer flows in from the conduit 76A
I do. With respect to the other components of the stabilizer 72,
This will be briefly described. At the upper end of the guide plate 110 of the developing section 70
The photosensitive material PM that has passed through the arranged squeezing roller pair 109 becomes the photosensitive material P
The guide cover 144 and the
Guided by the lead roller 146, transported to the stabilization tank 96A
Is entered. At the entrance of the stabilization tank 96A,
A free roller 94A for providing a loose waist is provided. Cheap
The stabilization tank 96A, which forms the storage area 95A for the stabilizing agent,
As with the image processing tank 96, a sponge-type stabilizer supply roller 98 is provided.
A and the stabilizing agent supply roller 98A.
A temporary storage section 100A for forming the stabilizer 143A is provided.
Supply the stabilizer to the loading side of the photosensitive material PM in the storage section 95A.
You. On the other hand, at the bottom of the stabilization tank 96A,
Similarly, a bottom liquid storage chamber 101A is provided. Drip-proof cover
Used when the discharge solenoid valve 104A with 114A is opened
Of the bottom liquid via the stabilizer discharge pipe 108A.
The liquid is discharged from the storage chamber 101A to the waste liquid receiving tray 106A. In addition,
Stabilizers do not require temperature control, so the bottom
No heater is provided in liquid storage chamber 101A. Downstream of stabilization tank 96A along photosensitive material PM transport path
Is the guide plate 11 that forms the entry path of the stabilized photosensitive material PM.
0A is placed inclined from the stabilization tank 96A upward.
The upper end of the guide plate 110A is rotated in the Z direction in the figure.
And stabilize the photosensitive material PM to dry unit 50 (see Fig. 5)
Extra safety from the surface of the photosensitive material while transporting
A squeezing roller pair 109A for squeezing the stabilizing agent is provided.
Stabilizer supply roller 98A and each squeezing roller pair 109,109A
Is a common driving source for each roller of the developing tank 96 described above.
It is driven and rotated synchronously. Rotation in the direction of arrow Z in FIG.
While transporting the photosensitive material PM, excess developer and
Squeezing roller pairs 109 and 109A for squeezing and stabilizing
So that the plane passing through the center of each roller is
Tilt counterclockwise by an angle β from the vertical plane passing through the center of the
Roll the upper roller downstream with respect to the photosensitive material conveyance direction so that
It is provided offset to the side. Therefore, the squeezing roller pair
The transport direction of the photosensitive material PM when passing between 109 and 109A is
It becomes downward by an angle corresponding to the angle β. Sensitive material PM
Roller pair 109 and 109A are transported at a predetermined elevation angle α.
Therefore, before each pair of rollers 109 and 109A,
As shown by the line, it curves upward. Large amount of developer or stabilizer attached to the surface of photosensitive material PM
The part is squeezed forward by the squeezing roller pair 109 and 109A.
Taken. As a result, the squeezed developer or stabilizer
Of the photosensitive material PM that is curved upward (conveyed downward)
Upper and outer circumferences of the surface and squeezing roller pair 109 and 109A
In the space formed by the above, the photosensitive material PM is squeezed roller pair 109,109A
Stay until you pass through. Development while staying at each squeezing roller pair 109,109A during transport of photosensitive material PM
After cutting the photosensitive material PM, the end surface of the liquid or stabilizer
At the same time as passing through
Of each pair of rollers 109 and 109A along the lower roller surface.
Right squeezed liquid collecting plate disposed below the roller pair 109,109A
152 or drop on the left squeeze liquid collecting plate 154,
It flows into the ray 106A. Each scraper roller pair 109, 109A has two scrapers
150 is provided at a position where the tip of the
Have been. The scraper 150 does not scratch the roller surface.
To increase the life of the scraper 150 itself.
For this purpose, use a stainless steel plate or
A stainless steel plate or the like whose end is covered with plastic
It is made of a material having elasticity and elasticity. Scraper 150
Plastics that cover the tip of
Chemical resistance and abrasion resistance to processing liquids such as steal and vinyl chloride
A material having wear resistance can be used. Scraper
Sludge and waste liquid scraped off by 150 are squeezed to the right
Drops on the liquid collecting plate 152 and the left liquid collecting plate 154,
Collected in the liquid receiving tray 106A. In addition, stable with the developing unit 70
A waste liquid tank 156 is provided in each of the waste liquid receiving trays 106 and 106A of the section 72.
Is provided to each tray 106, 106A.
The collected waste liquid is finally discharged through a pipe 158 to a waste liquid collector.
Collected at Nk 156. In the stabilizing section 72 configured as described above, the developing section 70
The developed photosensitive material PM is sent to the squeeze roller pair 109.
The remaining developer is squeezed out, and the free roller 94A
It is carried into the storage part 95A while being guided by the like. Sensitive material P
The stabilization process starts when M enters the stabilizer in the storage section 95A
After passing through the storage section 95A, the guide plate 110A
The stabilization process proceeds during the transfer. Aperture low
Extra stabilization from the top of the photosensitive material PM when passing through the pair 109A
After the agent is squeezed out, the photosensitive material PM is then removed by the roller pair 51.
To the drying unit 50. Next, temperature control in the developer cistern tank 78 etc.
Control device that controls the drive of the developer and developer supply roller 98, etc.
The device 60 will be described with reference to the block diagram shown in FIG.
You. As shown in FIG. 6, the electronic control unit 60 includes a well-known CPU 1
Built-in 62, ROM164, RAM166 and multiple self-running timer counters
As an arithmetic and logic operation circuit with the timer 168 etc.
Connected to each other via a common bus 170.
Exposure output port 172, development input port 174, development output
An input / output interface such as a power port 176 is provided. Ma
The common reservoir 170 of the electronic control unit 60 has a bottom reservoir.
The developer and the developer system in the reservoir 95 communicating with the chamber 101
Temperature adjustment for adjusting the temperature of the developer in the turn tank 78
A circuit 178 and a console for the operator to make various settings
To the control panel 4. The exposure output port 172 has a drive
A motor 13; a cutting device 27 for cutting the photosensitive material PM;
A light source 31 for irradiating the document in the document holder 10 with light;
From the first photosensitive material roll 21 or the second photosensitive material roll 22 to the photosensitive material PM
Motor 28 for sending out the light, and uniformly exposing the photosensitive material PM
LED38 for drying and drying to dry the stabilized photosensitive material
The unit 50 is connected. On the other hand, the developer input port 174
Float sensor 88 and stabilizer cistern in tank 78
Is connected to the float sensor 88A in the
Each roller of the processing unit 44 is connected to the image output port 176.
Drive motor 180, which is driven synchronously, and developer nozzle 82
The inflow solenoid valve 80 and the stabilizer nozzle 82A
The inflow solenoid valve 80A and the developer discharge pipe 108
Installed on the discharge solenoid valve 104 and the stabilized discharge pipe 108A.
The discharged electromagnetic valve 104A and the atmosphere near the guide plate 110.
The sheet heater 112 for heating to a certain temperature
Has been continued. The temperature adjusting circuit 178 includes a developing solution cistern tank.
The heater 86 installed in the tank 78 and the liquid temperature in this tank
Temperature sensor 85 for detecting temperature and installed in the bottom liquid reservoir 101
Two rod-shaped heaters 103 and the liquid storage chamber 101
A temperature sensor 103a for detecting a liquid temperature is connected. This
The temperature adjustment circuit 178 of the developer
Set the temperature of the developer in the liquid system tank 78
The above heaters are controlled so as to maintain the temperature range,
Signal indicating whether the temperature is maintained within a predetermined temperature range
Is output to the CPU 162. Next, the whole of the slit exposure type copying camera 1 of the embodiment will be described.
The operation will be briefly described. Slit exposure type turtle
When the power is turned on to the car 1, first, as shown in FIG.
Perform initialization processing (step S100), and then wait
Execute the process (step S200),
Wait for the start key to be pressed (step S300),
A light / development process is executed (step S400). Here, the initialization process means that the discharge solenoid valves 104 and 104A are
Open the valve and develop and stabilize the processing tank 96A (hereinafter
If necessary, both are collectively referred to as processing tank 96).
Developing solution or stabilizing agent (hereinafter, if necessary,
(To be collectively referred to as a processing liquid)
After closing 104,104A, open the inflow solenoid valves 80,80A
As the developer supply roller 98 and the stabilizer supply roller 98A rotate,
To supply the processing liquid to the processing tank 96 and operate the temperature adjusting circuit 178.
The developing solution cistern tank 78 and the developing tank 96.
Raise the temperature of the developer inside to about 28 ° C to 31 ° C.
This is a process of maintaining and maintaining the temperature. Initialized at power-on
By performing the processing of the processing liquid in the processing tank 96,
Replace with a new processing solution for exposure and development processing.
And controlled to an appropriate temperature. In the standby process (step S200),
While performing various settings, the apparatus stands by in a state where development is possible. When the start key is pressed and turned on (step
In the exposure and development processing (step S400) executed in (S300)
Is the projection light as shown in the timing chart of FIG.
Exposure processing by the science system 30 and the tip of the photosensitive material PM
Electromagnetic valve for inflow of developer prior to entering into processing tank 96
Open 80 to start supplying new developer and transport photosensitive material PM
Open the solenoid valve 80A for the inflow of the stabilizer
Start supplying a new stabilizer and follow the passage of the photosensitive material PM
The supply of these processing liquids is stopped. In the development processing unit 40
The operation of each unit is as described in detail above. As described above, the slit exposure type copying camera 1
The developing device 40 of the installed embodiment transports the photosensitive material PM.
While developing and stabilizing the photosensitive material PM
A printing plate for fusing is prepared. The development processing device 40 includes a photosensitive material PM.
In the conveying process, the elevation angle α is up to the squeezing roller pair 109 and 109A.
Squeezing roller pair 109,
This angle corresponds to the amount of deviation (angle β) of the upper roller of 109A
The photosensitive material PM upward before each upper roller
To bend. Therefore, the developer and the stable
When the agent is squeezed by the squeezing roller pair 109 and 109A,
Old developer or stabilizer curved upwards
Surface of photosensitive material PM (conveyed downward) and squeezing roller pair 10
The space formed by the upper roller periphery at 9,109A
Until the photosensitive material PM passes through the squeezing roller pair 109 and 109A.
I will get over. As a result, the old processing solution is stored in the processing tank 96.
Without returning, the processing performance in each processing tank 96 is deteriorated.
I will not let you. Also, the squeezed old developer or stabilizer is used for the photosensitive material PM
Of the photosensitive material PM surface
Eliminates the problem of irregularities (irregular uneven streaks)
Can be Further, the angle β of the upper roller of the squeezing roller pair 109, 109A
Is set smaller as the elevation angle α for transporting the photosensitive material PM increases.
When measured, the tip of the photosensitive material PM bites between the squeeze roller pair 109 and 109A.
Disturbance in transport of photosensitive material PM due to bending of photosensitive material PM when it is inserted
Can be suppressed. Therefore, the transport of the photosensitive material PM is not
Disturbance of the liquid level in the processing tank due to
Unevenness (irregularities on the surface of photosensitive material)
No unevenness occurs. In this embodiment, the scraper roller pair 90, 90A is scraped.
Attached to each roller of the squeezing roller pair 90 and 90A
Scraping sludge. Therefore, the roller
Sludge does not adhere and accumulate, resulting in poor drawing. Further, in this embodiment, a new developer is
When supplying, a new developer is supplied to the photosensitive material PM loading side,
That is, since the developer is supplied to the developing process start side,
Highly efficient and uniform development of photosensitive material PM using
As a result, the development quality is further improved. Stabilizer 72
The same applies to the stabilization processing in the present embodiment. The embodiment of the present invention has been described above.
The present invention is not limited to the above-described embodiments.
Implementation in various modes without departing from the gist
Obviously you can get it. For example, in this embodiment, the photosensitive material PM is supplied to the developing tank 96 and
Processing is completed in each processing tank from stabilization processing tank 96A
Each processing solution (developer, stable
Between the squeezing roller pairs 109 and 109A.
Subsequently, the configuration for processing the photosensitive material was described.
Sensitive material to prevent ripples in the static developer in the image processing tank
Also applicable to immersion-type development processing type that slowly transports
can do.

【The invention's effect】

As described above in detail, according to the photographic material processing apparatus of the present invention, when the excess processing liquid is squeezed from the surface of the photographic material by the pair of rollers pressed against each other (the pair of squeezing rollers), the predetermined elevation angle is used. The transport direction of the photosensitive material transported from the processing tank is downward by an angle corresponding to the amount of deviation of the upper roller of the roller pair, and the photosensitive material is transported while curving upward in front of the upper roller. Therefore, the old processing solution squeezed from the surface of the photosensitive material
The photosensitive material is retained in a space formed by the surface of the photosensitive material curved upward (conveyed downward) and the outer periphery of the upper roller in the roller pair until the photosensitive material passes through the roller pair. As a result, the quality of the photosensitive material processing can be improved without causing the old processing solution to return to the inside of the processing tank and deteriorating the performance of the processing solution, or transmitting along the surface of the photosensitive material being conveyed to cause processing unevenness. .

[Brief description of the drawings]

FIG. 1 is a structural view of a developing apparatus 40 according to one embodiment of the present invention, FIG. 2 is a schematic structural view showing a slit exposure type copying camera 1 incorporating the developing apparatus of the embodiment, and FIG. FIG. 4 is a perspective view of a main part of a processing tank 96, and FIG.
0 is a perspective view of FIG. 5, FIG. 5 is a cross-sectional view showing the arrangement of a developer supply roller 98, a developer temporary storage unit 100, and the like in the developing tank 96. FIG. 6 is a block diagram showing the configuration of the electronic control unit 60. FIG. 7 is a flowchart showing a processing routine executed by the electronic control unit 60, and FIG. 8 is a timing chart showing the transport of the photosensitive material PM and the operation timing of each unit. 1 Slit exposure type copying camera 10 Document holder 20, Sensitive material transport device 30 Projection optical system 40 Development processing device 50 Drying unit 60 Electronic control device 96 Development Processing tank, 96A Stabilization processing tank 98 Developer supply roller 98A Stabilizer supply roller 109,109A Squeeze roller pair 110,110A Guide plate 112 Surface heater, Scraper PM ...... Sensitive material

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-217344 (JP, A) JP-A-2-204742 (JP, A) JP-A-2-120886 (JP, A) JP-A-62-162 272253 (JP, A)

Claims (2)

(57) [Claims] 1. A processing apparatus for processing a silver salt type photosensitive material such as photographic paper or photosensitive paper or film for direct plate making, wherein the photosensitive material is stored in a processing tank for storing a processing solution for the photosensitive material. A photosensitive material transporting means for carrying in and carrying out the photosensitive material from the processing tank at a predetermined elevation angle is provided, and a pair of rollers pressed opposite to each other at a position where the photosensitive material transported from the processing tank can be sandwiched. The upper roller of the roller pair is disposed so as to be deviated downstream with respect to the transport direction of the photosensitive material, and the roller pair is rotated in the feed direction of the photosensitive material and adheres to the surface of the photosensitive material. 2. A light-sensitive material processing apparatus, comprising: a processing liquid removing means for squeezing the processing liquid. 2. A photosensitive material processing apparatus according to claim 1, further comprising: a scraper which is in contact with an outer periphery of at least one of the pair of rollers to scrape off a processing liquid, sludge, and other deposits on the surface of the roller. Sensitive material processing equipment.