JPH0359656A - Device for processing photosensitive material - Google Patents

Abstract

PURPOSE:To attain a processing free from uneveness of development by forming rugged gravure patterns on the surfaces of carrying rollers provided on a section for supplying a developing soln. CONSTITUTION:The paired carrying rollers 1 to 3 are superposed and arranged in three stages in a perpendicular direction and a silver halide photographic sensitive material 4 is sent, after exposing, on a carrying path 5 formed of the carrying rollers 1 to 3. The gravure patterns 10 are formed to rugged shapes on the surface of the rollers 1 to 3 and the developing soln. supplied to the silver halide photographic sensitive material 4 is leveled off by rotation, by which the prescribed quantity of the developing soln. is held and uniformized. Thus, the developing soln. is supplied uniformaly onto the exposed surface and the high-definition processing is possible without generating the uneveness of development.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a photosensitive material processing apparatus for developing a silver halide photographic material having an exposed wood-philic colloid layer.

[Prior Art] A silver halide photographic light-sensitive material having a hydrophilic colloid layer is developed in an automatic processor. For example, the silver halide photographic light-sensitive material is transported by a roller transport mechanism and stored in a developing tank. The film is developed by being immersed in a sufficient amount of developer solution for a predetermined period of time.

During the development process of this silver halide photographic light-sensitive material, the active ingredients in the developer stored in the developer tank are consumed.
Fatigue deterioration of the developer occurs. In addition, over time, as in the case where the developing solution is alkaline, it absorbs carbon dioxide gas in the air and undergoes a neutralization reaction, resulting in a decrease in alkalinity, and deterioration due to fatigue over time due to oxidation by oxygen.

As a method to recover from the fatigue of this developer,
-144502, JP-A No. 54-62004, JP-A-55-115039, and JP-A-56-12645, the developer replenisher is continuously or intermittently replenished according to the amount of development processing. A method has been proposed for recovering the developer from fatigue.

[Problems to be Solved by the Invention] However, in all of these, the problem is that photographic processing can be performed with different characteristics each time, unlike the developer components used in the first development and the components used in the subsequent seven days of development. , and the photo finishing performance is unstable.

For this reason, it is conceivable to develop the silver halide photographic material by supplying the developer to the exposed surface of the silver halide photographic material without immersing it in the developer stored in the developing tank. Since it is uneconomical if a large amount of developer is used, it is necessary to use as little developer as possible to achieve sufficient development processing.

By the way, when a small amount of developer is supplied to a silver halide photographic light-sensitive material in this way, it is difficult to supply the developer uniformly to the exposed surface, which is one cause of uneven development, so it is especially important to supply the developer uniformly. That is important! It has become a problem.

This invention was made in consideration of the above-mentioned circumstances, and provides a photosensitive material processing apparatus that can uniformly supply a developer to the exposed surface of a silver halide photographic light-sensitive material and can perform high-quality processing without uneven development. is intended to provide.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a method of applying a developer containing hydroquinones to the exposed surface of a silver halide photographic light-sensitive material having a wood-philic colloid layer on both sides of the support. In a photosensitive material processing apparatus for supplying silver halide photographic light-sensitive materials without immersing them in a developer, a conveyance roller is provided in the part that supplies the developer, and the surface of the conveyance roller has an uneven surface. It is characterized by the formation of a gravure pattern.

This silver halide photographic light-sensitive material is a high-sensitivity film such as X-ray, and has at least a wood-philic colloid layer on both sides of a support, which is made of a transparent material. This silver halide photographic light-sensitive material, for example, the one described in Japanese Unexamined Patent Application Publication No. 63-23154, which was previously filed by the applicant, has excellent sensitivity, fogging, and graininess, and even with a small amount of gelatin, scratches may occur. It is preferably used because it causes less blackening and pressure desensitization.

Supplying the developer to both sides of the silver halide photographic material is as follows:
It is preferable to convey the silver halide photographic light-sensitive material, and this conveyance may be carried out horizontally or vertically, but if it is conveyed and supplied vertically, the installation area of the apparatus can be reduced, preferable.

In addition, the developer is supplied to the silver halide photographic light-sensitive material without immersing the silver halide photographic light-sensitive material in the stored developer. A predetermined amount of developer can be supplied, preventing fatigue of the developer over time and saving the developer.

This developer is supplied by applying the developer to the exposed surface of the silver halide photographic light-sensitive material, or by showering, spraying, or the like, and the developer is supplied not only once, but also by
You may do this several times.

Hydroquinones used in the developer of the present invention include hydroquinone, chlorohydroquinone, methylhydroquinone, etc., and hydroquinone is preferably used. The amount added is 1g per 1°C of developer solution.
20g 1 is preferably 5g to 15g.

Further, the developing solution of this invention includes Japanese Patent Application Laid-Open No. 63-10158
3-pyrazolidone type developing agent, dialdehyde type hardener, antifoggant selected from indazole type, benzimidazole type, penztriazole type, mercaptothiazole type, other chelating agents, buffering agents, alkali Agents, solubilizers, pH adjusters, development accelerators, surfactants, etc. may also be added as necessary.

In this invention, a conveyance roller is provided in a portion where a developer is supplied, and the rotation of this conveyance roller conveys the silver halide photographic material to which the developer has been supplied. The gravure pattern formed on the surface of this conveyance roller has an uneven shape, and is formed so that the developer supplied to the silver halide photographic light-sensitive material is leveled by rotation, and a predetermined amount of the developer is retained and made uniform. Ru.

[Function] In this invention, a developer containing hydroquinones is supplied to the exposed surface of a silver halide photographic light-sensitive material having a wood-philic colloid layer on both sides of the support. This silver halide photographic material, which is not immersed in the material, is transported by the rotation of transport rollers.
At this time, the gravure pattern formed on the surface of the conveyance roller smooths out the developer in the areas where more was supplied, and the developer retained by the gravure pattern is supplied to the areas where less was supplied, resulting in uniform development and no uneven development. It is processed.

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

FIG. 1 shows a developing device to which an embodiment of the present invention is applied, FIG. 2 is a front view of a conveyance roller, and FIG. 3 is an enlarged view of a gravure pattern on the conveyance roller.

In this photosensitive material processing apparatus, a pair of transport rollers 1, 2.
3 are vertically stacked in three stages, and after exposure, the silver halide photographic material 4 is sent in the direction of arrow A on a transport path 5 formed by transport rollers 1 to 3, and is subjected to development processing. It will be done.

The upper stage, the interruption stage, and the lower stage are respectively constructed in the same way, and above the pair of conveyor rollers 1 to 3 are provided with a pair of supply nozzles 6, 7, 8, respectively, and the supply ports 6a to 6 of the supply nozzles 6 to 8 are provided. 8a faces toward the contact surfaces of the conveyance rollers 1 to 3 and is arranged so as to face the roller surfaces.

The silver halide photographic light-sensitive material 4 is conveyed in the six directions of arrows by the drive of the conveyance rollers 1 to 3, and when this silver halide photographic light-sensitive material 4 is conveyed, it is developed from the supply ports 68 to 8a of the supply nozzles 6 to 8. liquid is supplied. This developer flows toward the contact surfaces of the pair of transport rollers 1 to 3, and is applied to both sides of the silver halide photographic material 4.

A new developer is supplied from each supply nozzle 6 to 8 to the silver halide photographic light-sensitive material 4, falls downward from the upper conveyance roller 1, then falls downward from the interrupted conveyance roller 2, and then continues to the conveyance roller. 3 and was discarded, and the developer is now disposable.

In addition, a tray is arranged below the transport rollers 1 to 3 so that the developer falls onto the tray, and piping is connected to the tray so that a pump can circulate the developer in the tray to the supply nozzle. You can also do this. In this case, there is no developing fatigue caused by the processing of the developing solution, and the circulating developing I
At night, there is less contact area with the atmosphere, so there is less fatigue over time due to carbon dioxide absorption, so it can be reused.

A gravure pattern 10 shown in FIGS. 2 and 3 is formed in an uneven manner on the surface of the conveyance rollers 1, 2.3, and is used to level the developer supplied to the silver halide photographic material 4 by Rotary Co., Ltd. At the same time, a predetermined amount of developer is held and made uniform. The material of the conveyance rollers 1.2.3 is preferably synthetic resin, synthetic rubber, or the like.

Further, in this embodiment, the gravure pattern 10 is formed by lead processing, and for example, the interval between the ridges 10a is preferably 0.3 mm or less, and for example, the ridges 10a
The height H of a is preferably 0.15 mm or more, and this peak 1
At 0a, the developer is leveled at the portion where a large amount has been supplied to the silver halide photographic light-sensitive material 4, and the developer is retained in the trough 10b.
The developer is uniformly supplied to the portions of the silver halide photographic light-sensitive material 4 that are supplied with a small amount.

Further, the gravure pattern 10 of the conveyance rollers 1, 2.3 can be formed as shown in FIGS. 4 to 9.

In Fig. 4, the inclination of the groove in the lead stitching process is made small with respect to the conveying direction, in Fig. 5, the inclination of the groove is made large with respect to the conveying direction, and in Fig. 6, the groove is made into a mesh-like groove. Further, in FIG. 7, a large number of small diameter holes are formed, and in FIGS. 8 and 9, wavy grooves are formed.

[Effects of the Invention] As explained above, in the light-sensitive material processing apparatus of the present invention, hydroquinones are contained on the exposed surface of the silver halide photographic light-sensitive material having a wood-philic colloid layer on both sides of the support. The developer is supplied without immersing the silver halide photographic light-sensitive material in the developer, and the silver halide photographic light-sensitive material is transported by the rotation of the transport roller. In the formed gravure pattern, the developer is leveled out in areas where more was supplied, and the developer is supplied in areas where less was supplied, making it uniform.
Processing can be done without uneven development, improving the finishing characteristics of photographs.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the photosensitive material processing apparatus of the present invention, FIG. 2 is a front view of the conveyance roller, FIG. 3 is an enlarged view of the gravure pattern of the conveyance roller, and FIGS. 4 to 9 are the gravure patterns of the conveyance roller. It is a figure which shows the other Example of a pattern. In the figure, reference numerals 1 to 3 are conveyance rollers, 4 is a silver halide photographic light-sensitive material, 5 is a conveyance path, 6 to 8 are supply nozzles, and 10 is a gravure pattern. Figure 23 0 Figure 3

Claims (1)

[Claims] A developing solution containing hydroquinones is supplied to the exposed surface of a silver halide photographic material having hydrophilic colloid layers on both sides of the support without immersing the silver halide photographic material in the developer. What is claimed is: 1. A photosensitive material processing apparatus characterized in that a conveying roller is provided in a portion to which the developer is supplied, and an uneven gravure pattern is formed on the surface of the conveying roller.