JPS63280249A - Photosensitive material processing device having post-exposing means - Google Patents

Abstract

PURPOSE:To simplify an operation stage by constituting a device in such a manner as to have a post-exposing means capable of exposing a photosensitive material contg. orthonaphthoquinone diazide as a photosensitive component in a stage after development. CONSTITUTION:The processing device 1 which processes the imagewise-exposed photosensitive material F contg. the orthonaphthoquinone diazide by passing said material successively through a developing section 2, a washing section 3 and a drying section 4 is constituted to have at least one exposing means 8 in the stage after the developing section 2. The exposing means 8 has a light source lamp 9 and is so constituted that the luminous intensity of the light source and the distance P between the surfaces of the light source lamp 9 and the photosensitive material F, i.e., exposure, can be controlled according to the conveying speed of the material F. The post-exposing stage to be executed after the development process or the transfer and lamination of the 4-color images formed by the process is thereby eliminated and the operating stage is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a processing apparatus for photosensitive materials. The present invention relates to a photosensitive material processing apparatus having a post-exposure means.

(Background of the Invention) When printing a large number of sheets by creating a printing plate using a plate-making material such as a PS plate from a color original, a color scanner or the like is used to create a four-color net negative (or net positive) from the color original. ) After the process of pasting, turning, retouching, etc., a four-color one-sheet positive is created, a proof is made, and the finished product is confirmed before final printing. In this case, checking functions such as checking scanner disassembly in the process of creating net negatives or positives, checking pasting, etc. in the process of creating single-sheet positives, and confirming the print orderer in the proof printing process will ensure a good print finish. Color proofs are usually created and checked for this purpose. As photosensitive materials for creating color proofs, there are known photosensitive materials using silver halide photography, electrophotographic photosensitive materials, and photosensitive materials using photopolymers. It is known to use An example of such a color proof is one in which four-color images of yellow, magenta, cyan, and black obtained through development processing are sequentially transferred onto transfer paper by heating and pressure to form a multilayer color image. There is.

In addition, a so-called overlay method is also commonly used as a color proofing method, in which four films, each having a four-color image formed in the same manner and developed in the same manner, are simply overlapped without performing such transfer.

On the other hand, ortho-naphthoquinone diazide, which is widely used as a positive photosensitive material in PS plates and the like, normally has a yellow appearance and has the property of becoming colorless and transparent upon photolysis. When such orthonaphthoquinonediazide is used as a photosensitive material for creating a positive color proof as described above, it is the unexposed area consisting of undecomposed orthonaphthoquinonediazide that can become a colored image area after exposure and development. . Therefore, due to the above-mentioned properties, the hue of the formed image area is visually perceived as the original black, cyan, magenta, or yellow, with yellow due to orthonaphthoquinonediazide added to each.

However, since color proofing should originally be used for the purpose of accurate color proofing as mentioned above,
It is necessary to remove yellow, which is an unnecessary color component as mentioned above, in the colored image area, and for this reason, conventionally, after the development of the four primary colors or after the image transfer of the four primary colors, exposure is performed again to remove the undecomposed components. It was necessary to decompose orthonaphthoquinonediazide. For this reason, the work process for creating color proofs is complicated, and especially when transferring a four-color image, a long exposure time is required to completely decompose the orthonaphthoquinonediazide in the bottom layer due to light absorption by the pigment. It had problems such as:

(Object of the Invention) The object of the present invention is to provide a post-exposure step that is carried out after the development of a photosensitive material containing orthonaphthoquinone diazide as a photosensitive component or after the transfer and lamination of four-color images formed by the processing in the preparation of color proofs. It is an object of the present invention to provide a photosensitive material processing apparatus that allows the removal of such materials and simplification of the work process.

(Structure of the Invention) The above objects of the present invention are as follows.
This has been achieved by a photosensitive material processing apparatus that sequentially passes through a water washing section and a drying section for processing, and is characterized in that it has at least one exposure means after the developing section.

Hereinafter, the present invention will be explained in detail based on an actual tMB illustrated in the drawings, but the present invention is not limited to these embodiments in any way.

(Example) FIG. 1 is a schematic side view showing one embodiment of a photosensitive material processing apparatus of the present invention.

The photosensitive material processing equipment @1 shown in Fig. 1 includes a developing section 2, a water washing section 3,
and a drying section 4, and the photosensitive material F containing imagewise exposed orthonaphthoquinone diazide as a photosensitive component is
The paper is configured to be conveyed sequentially through the two parts by conveyance rollers 5a and 5b made of materials suitable for each part, and to be processed in each part.

The developing section 2 contains, for example, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium metasilicate, potassium metasilicate, dibasic sodium phosphate, and dibasic sodium phosphate.
A developer tank is provided in which an alkaline developer consisting of an alkali metal salt such as sodium phosphate, a surfactant, an organic solvent, etc. is stored, and the developing section 2 is used to store the photosensitive material F inserted from the left side in the figure. passes through the developer and is developed by a plurality of conveying rollers 5a configured as a pair of upper and lower rollers,
It is configured to be transported to the next water washing section 3. Further, in order to ensure film removal after development, a brush roller 6 may be provided in the development section.

Further, this brush roller may be provided in the next washing section.

The water washing section 3 is provided with a water tank portion 3a in which water is stored, and the developed photosensitive material is washed by passing through the water tank portion. The conveying roller 5a for conveying the cleaned photosensitive material F may be a rubber roller, but if a squeeze roller made of a hygroscopic sponge roller is used, for example, the drying process in the next drying section can be carried out efficiently. can. Further, the washing section may be provided with a shower for supplying fresh water and washing the photosensitive material.

The drying section 4 blows warm air or normal temperature air onto the front and back surfaces of the photosensitive material F by a hot air fan 7 while the photosensitive material F, which has been washed with water and is transported, is transported by a transport roller 5b made of, for example, phenol resin. The structure is such that the material is soaked, dried, and then discharged from the device.

In this embodiment, the drying section 4 is provided with a post-exposure means 8 for exposing the photosensitive material F, and this means has a light source lamp 9, and the drying section 4 is provided with a post-exposure means 8 for exposing the photosensitive material F. Any structure may be used as long as it can control the luminous intensity of the light source and the distance P between the light source lamp 9 and the surface of the photosensitive material F, that is, the exposure m, sufficiently to achieve the purpose, and can be used for normal image exposure. All of the exposure equipment used in The water-washed photosensitive material F is exposed to light while being dried or after being dried in the drying section 4, and the undecomposed orthonaphthoquinonediazide is completely decomposed before being discharged from the apparatus.

The above-mentioned exposure means may be provided in any process as long as it is after the developing section 2, and in addition to the drying section as in this embodiment, it may be used between the washing and drying sections, or in the final section of the washing section. ,
Although it is possible to provide it after the drying section or in any plurality of these sections, it is preferable to perform it during drying in the drying section 4 from the viewpoint of processing time and the like.

The light source used in the post-exposure means of the present invention may be any light source that is compatible with the sensitive wavelength range of orthonaphthoquinone diazide, but preferably a mercury lamp, an ultra-high pressure mercury lamp, a metal halide lamp, a chemical lamp, etc.

As long as the processing apparatus of the present invention having the configuration represented by the above-mentioned embodiment has the above-mentioned exposure means in a step after the developing section, other steps can be performed using the steps normally used in processing photosensitive materials. Such processing equipment may include commonly used automatic developing machines, such as turnback type automatic developing machines, vertical type automatic developing machines, horizontal conveyance type automatic developing machines, etc. can.

The photosensitive material F suitable for the processing apparatus of the present invention is a positive-working photosensitive material having a photosensitive layer containing orthonaphthoquinone diazide as a photosensitive component, and is particularly effective when used for producing color proofs.

The photosensitive layer of such a photosensitive material may contain, in addition to orthonaphthoquinone diazide, other photosensitive components, an alkali-soluble resin, a dye, a pigment, a plasticizer, and the like. In particular, the dyes and pigments mentioned above have hues of yellow, magenta, cyan, and black necessary for creating the color proof aimed at by the present invention, and for example, the following are used. be done.

Victoria Pure Blue (C, 142595) Auramine (C, 141000) Cararon Brilliant Flavin (C, I Basic 13) Rhodamine 6GCP (C, 145160) Rhodamine B (C, 145170) Safranin QK70:10
0 (C, 150240) Erioglaucine X (C
, 142080) First Black Ha (C, 12
6150) No, 1201 Lionor Yellow (C
, 121090) Lionor Yellow GRO (C, 12
1090) Shimla Fast Yellow 80F (C
, 121105) Benzidine Yellow 4T-5640 (
C, 121095) Shimla Fast Red 4015
(C, 112355) Lionor Red 7B4401
(C, 115830) First Gen Blue TGR-
L (C, 174160) Lionor Blue 38 (C
8126150) Mitsubishi Carbon Black HA-100 Mitsubishi Carbon Black H30, H40, H50 (Here, C and I represent color index.) In addition to the above pigments, metal powders, white pigments, fluorescent pigments, etc. are also used. .

The photosensitive layers having the yellow, magenta, cyan, and black color images processed by the processing and apparatus of the present invention are each sequentially transferred to a transfer paper at 100°C and 5K (J/C).
A color proof with multiple color combinations may be created by copying under heating and pressurizing conditions such as f.
Alternatively, the above photosensitive materials having images of each color may be superimposed and used as an overlay method.

(Effects of the Invention) As described above in detail in the Examples, the processing apparatus of the present invention has a post-exposure means capable of exposing a photosensitive material containing orthonaphthoquinonediazide as a photosensitive component in a step after development. Therefore, after the yellow, magenta, cyan, and black images have been developed, as was conventionally done, or after the transfer and stacking of the four-color images, a new exposure is performed to remove the undecomposed orthogonal images. There is no need to decompose naphthoquinonediazide, and work processes such as color proof creation work can be simplified.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing one embodiment of the present invention. (Main reference numbers) 1... Processing device, 2... Developing section, 3... Water washing section,
3a...Aquarium part, 4...Drying part, 5a, 5b...
- Conveyance roller, 6... Brush roller, 7... Warm air fan, 8... Exposure means, 9... Light source lamp

Claims (1)

[Claims] A processing apparatus for processing a photosensitive material containing imagewise exposed orthonaphthoquinone diazide by sequentially passing through at least a developing section, a washing section, and a drying section, including at least one exposing means in a process subsequent to the developing section. A photosensitive material processing apparatus having a post-exposure means characterized by: