JPH054658B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a photosensitive material processing apparatus that includes a squeeze roller in a processing section for processing a photosensitive material.

(Background of the Invention) For example, there are processing apparatuses for processing lithographic printing plates or photographic films known as photosensitive materials, which process the photosensitive materials as they are conveyed through a processing section.

Incidentally, a squeeze roller is disposed on the conveyance path of this processing section, and the squeeze roller squeezes the photosensitive material being conveyed, thereby reducing as much as possible the removal of the processing liquid.

(Problem to be solved by the invention) A rubber roller is used for this squeeze roller, and this rubber roller wraps a rubber sheet around a roller core by a so-called lamination method, and after vulcanization, the surface is polished by mechanical means. It is formed as follows.

In other words, if the squeezing roller has a matte-like rough surface, its liquid removal effect will be halved, so the roughness of the roller surface should be minimized and the roller should have a predetermined hardness to obtain the optimum squeezing effect. There is a need. However, when a rubber roller is formed by the lamination method, the hardness of the rubber roller needs to be relatively high in order to make the surface roughness of the roller finer and improve accuracy since it is polished by mechanical means. However, if the hardness of the rubber roller is too high, the squeezing effect will be reduced, and in order to mechanically polish to a predetermined hardness, it is necessary to polish slowly and slowly, which increases processing time and costs. , and could not be said to be suitable for mass production.

This invention was made against the background of the above circumstances, and it has a simple structure, improves the surface precision of the squeeze roller, makes it possible to appropriately select the hardness, and enables reliable liquid removal. The purpose is to provide material processing equipment.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a photosensitive material processing apparatus in which a photosensitive material is processed while being conveyed through a processing section, and is equipped with a squeeze roller that squeezes a processing solution. In this invention, the squeeze roller is formed of a mirror-finished roller.

(Function) In this invention, the squeeze roller provided in the photosensitive material processing section is formed of a mirror roller, and the photosensitive material is squeezed by this squeeze roller. The squeeze roller has a simple structure, has a predetermined hardness, and is set to a mirror surface with roller surface precision, so the roller surface has good adhesion, provides an optimal squeeze effect, and minimizes the removal of processing liquid. It can be suppressed.

(Example) Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

First, Figs. 1 and 2 show the application of the present invention to a photosensitive material processing apparatus for lithographic printing plates. Fig. 1 is a schematic sectional view of the photosensitive material processing apparatus, and Fig. 2 is an enlarged perspective view of the main parts. It is.

In the figure, reference numeral 1 denotes a photosensitive material processing apparatus, and this photosensitive material processing apparatus 1 is equipped with a developing processing section 2, a water washing processing section 3, and a wash gum or rinsing processing section 4. The lithographic printing plate, which is the photosensitive material 5, is sequentially conveyed to these processing units 2, 3, and 4 through a conveyance path 8 consisting of a conveyance roller 6 and a guide roller 7. A processing liquid is sprayed through shower nozzles 9, 10, and 11 to carry out development processing.

A brush processing section 12 is provided after the development processing section 2.
is arranged, and when the photosensitive material 5 is conveyed between the brush guide 13 and the brush roller 14, the brush roller 14 brushes and eliminates the photosensitive layer in the non-image area on the photosensitive material 5. There is.

Squeeze rollers 15 are arranged downstream of the brush processing section 12, or after the washing section 3 and the wash gum or rinse processing section 4, respectively.

As shown in FIG. 2, both ends of each squeeze roller 15 are rotatably supported by bearings 16 and 17. This squeeze roller 15
The bearings 16 and 17 are engaged from above with the bearing members 20 and 21 fixed inside the processing tank side plates 18 and 19, and the two squeeze rollers 15 abut the roller parts 15a, and both They are supported on a shaft so that they can rotate together.

Bearing 1 of squeeze roller 15 located above
6, 17 are held down by the ends 22a, 23a of nip springs 22, 23 at their upper portions. These nip springs 22, 23 are connected to the fixing pin 24,
25, and positioning pins 26, 27 apply downward force to the ends of the nip springs 22, 23. As a result, the squeeze roller 15
The rollers 15a are pressed against each other with a predetermined pressure to obtain a good squeezing effect.

A worm wheel 28 is provided at one end of the squeeze roller 15 located below, and this worm wheel 28 meshes with a worm gear 30 provided on a drive shaft 29.

The rotation of the drive shaft 29 causes the lower squeeze roller 15 to rotate, and the rotation of the squeeze roller 15 causes the upper squeeze roller 15 to rotate in conjunction.

The squeeze roller 15 is composed of a mirror roller. The mirror roller is formed by polishing the inner peripheral surface of a metal pipe and applying chrome plating to create a mirror surface, then injecting a fluid type rubber material into a mold and allowing it to harden. Moreover, other than metal pipes can also be formed by injecting into resin pipes for casting.

Since this mirror roller has a mirror surface, the roller surface has good adhesion and there is no leakage of processing liquid. In addition, since the surface of the photosensitive material 5 passing between the mirror-finished rollers and other conveyed objects is good, the effect of squeezing out the liquid adhering to the surface of non-transferred objects is great. Furthermore, since it is molded by casting, the rubber hardness can be lowered to, for example, 20 to 25 degrees, which further increases the squeezing effect.

Therefore, for example, in the case of a photosensitive material 5 with a thickness of 0.15 to 0.3 mm, the amount of solution taken out after development processing is 6.
It can be kept below ml/ ^m2 .

Furthermore, regarding workability, mass production can be achieved simply by forming a casting mold, and the cost can be reduced. FIG. 3 is a sectional view showing another embodiment to which the present invention is applied.

In the figure, reference numeral 41 denotes a photosensitive material processing device that develops a photographic film, which is a photosensitive material 42;
This photosensitive material processing device 41 is used to process one photosensitive material 4.
There is an insertion table 43 on one side, and a photosensitive material receiver 44 on the other side.
is provided. Inside, a developing processing section 45, a fixing processing section 46, a washing processing section 47, and a drying section 48 are arranged from the insertion table 43 side to the photosensitive material receiver 44.

The photosensitive material 42 is inserted from the insertion table 43, passes through a conveyance path 50 formed by conveyance rollers 49 disposed in a developing section 45, a fixing section 46, a washing section 47, and a drying section 48, and is processed therein. The photosensitive material is taken out to the photosensitive material receiver 44. A squeeze roller 51 formed of a mirror roller is disposed after the washing section 47 and thoroughly drains the water and transfers it to the drying section 48.
It is now being supplied to

In the above embodiment, the squeeze rollers 15, 51 made of mirror-finished rollers are provided as an upper and lower pair, but the upper squeeze rollers 15, 51 are mirror-finished rollers, and the lower squeeze rollers 15, 51 are made by mechanical polishing. may be combined.

(Effects of the Invention) As described above, in this invention, the squeeze roller provided in the photosensitive material processing section is formed of a mirror roller. Therefore, the squeeze roller has a simple structure and a predetermined hardness, and the roller surface has high precision. The mirror surface has good adhesion, provides an optimal squeezing effect, and minimizes removal of processing liquid.

[Brief explanation of the drawing]

1 and 2 show the present invention applied to a photosensitive material processing apparatus for lithographic printing plates. FIG. 1 is a schematic sectional view of the photosensitive material processing apparatus, FIG. FIG. 3 is a sectional view showing another embodiment to which the present invention is applied. 2, 45... Development processing section, 3, 47... Washing processing section, 4... Wash gum or rinsing processing section, 5,
42... Photosensitive material, 6, 49... Conveyance roller, 8, 5
0... Conveyance path, 15, 51... Squeeze roller.

Claims (1)

[Claims] 1. A photosensitive material processing apparatus in which a photosensitive material is processed while being conveyed through a processing section and is equipped with a squeeze roller for squeezing a processing liquid, characterized in that the squeeze roller is formed by a mirror-finished roller.