JPS6344823Y2 - - Google Patents

Description

[Detailed description of the invention] (A) Industrial application field The present invention relates to an image-receiving material suitable for creating a draft manuscript by the silver complex diffusion transfer method (DTR method).

(B) Prior art and its problems Today, a wide variety of lithographic printing plates are known and put into practical use. For example, presensitized plates (so-called PS plates) using diazonium compounds, etc.
Typical examples include electrophotographic lithographic printing plates using zinc oxide or organic photoconductors, and silver salt photolithographic printing plates using silver halide emulsions. In particular, lithographic printing plates with high photosensitivity, such as the latter two, can be easily and quickly made using an automatic plate-making machine, from photographing the document to be printed to processing. It has become rapidly popular as a lithographic printing plate suitable for

In the direct plate-making method, various materials are used to create a draft original with a reflective image, and this draft manuscript is photographed on a photosensitive lithographic printing plate with a camera.

Receiving paper produced by the DTR method is used as one of the materials for creating such draft manuscripts.

By the way, if you want a document to be printed that includes text or ruled lines (line image) in a photograph (continuous tone image), it is necessary to combine the photograph or a continuous tone image obtained by converting it into a halftone image and a line image. They were created as separate manuscripts and combined to form a manuscript. The method to create the line image in that case is as follows.
For example, a negative image is created using a lithium film, the lithographic film is closely exposed to a film material having a photocurable photosensitive resin layer containing a white pigment, and the uncured portion is removed with water to create a white image. There is a method in which an adhesive is applied to the back side of this white image and it is pasted at a desired position on the continuous tone image. but,
This method is expensive because it requires a lithographic film and a photosensitive resin film, and it also requires a plurality of exposure machines, making it cumbersome to operate. Also, applying the adhesive is troublesome, and the adhesive may ooze out immediately after application and cause stains. Furthermore, since the film is generally thick, it not only contributes to the high cost as mentioned above, but also has disadvantages such as shadows appearing when photographing the finished manuscript with a camera.

Furthermore, conventional materials for creating block copies essentially only have one image-forming function and cannot be used for any other purposes or purposes, so it is necessary to have a variety of materials available. It was hot.

(C) Purpose of the invention The purpose of the invention is to provide a multipurpose image-receiving material that is inexpensive and capable of forming several types of images through simple and quick processing.

(D) Structure of the device This device has a transparent thin film sheet on one side of the substrate with a releasable adhesive layer interposed therebetween, and a pigment layer containing physical development nuclei thereon, and the pigment layer is substantially coated on the other side. This is an image-receiving material characterized by having a physical development nucleus layer that does not contain a physical development nucleus layer.

Hereinafter, the image receiving material of the present invention and its usage will be explained with reference to the drawings.

(E) Example Figure 1 is a sectional view showing an example of the image-receiving material of the present invention, and Figure 2 shows the process of creating a block copy consisting of pigment characters using the image-receiving material of Figure 1. There is.

In FIG. 1, a peelable adhesive layer 2, a transparent thin film sheet 3, and a pigment layer 4 containing physical development nuclei are provided on a substrate 1, and a physical development nucleus layer 5 is provided on the other surface of the substrate 1.

As the substrate 1, any known support for photographic materials can be used, such as polyolefins such as polyethylene, polypropylene, and polystyrene, cellulose ester films such as cellulose acetate and cellulose nitrate, and polyester films such as polyethylene terephthalate. Paraita paper, polyolefin resin-coated paper, etc. are used. Although the thickness is arbitrary, it is preferably thicker than the thickness of the thin film sheet 3.

The surface of the base body 1 is treated with a release agent to facilitate peeling of the adhesive layer 2. As a release agent,
For example, silicone oils such as methylhydrodienepolysiloxane, dimethylpolysiloxane with less than hydroxyl groups, dimethylpolysiloxane, silicone oil emulsions, silicone water repellents such as sodium methyl siliconate, or butyl titanate, these silicone water repellents, etc. or those to which organic acid salts such as aluminum, tin, lead, and zinc are added as auxiliaries, paraffin waxes, wax emulsions, zirconium salts, quaternary ammonium salts such as stearoylmethylamide and methylenepyridinium salts, N- N-methylol fatty acid amides such as methylolstearic acid amide, fluorocarbons such as barfluoromonocarboxylic acid chlorocomplex salts and acrylic acid fluorinated alkyl esters, N,N-diethanololeamide, N,N
Amides such as -diethanolerucamide and N,N-diethanolstearylerucamide can be used. Further, polyvinyl carbamate acrylic ester copolymers, polyvinyl acetate copolymers, etc. can also be preferably used. The amount of release agent used is generally 0.1 to 5 per ¹ m2.
The amount of g can be used as a guide. The term peelable adhesive layer refers to the bond between the substrate 1 and the adhesive layer 2 after the imaging process.
This means that they are adhered in a removable state.

The adhesive used in the peelable adhesive layer may be made of a sticky resin or polymer. or,
A tacky resin or plasticizer can also be added to an inherently non-tacky polymer or elastomer to make it tacky. A suitable polymer that can be made sticky is
For example, natural unvulcanized rubbers, synthetic rubbers such as polyisobutylene: polychloroprene: polyisobrene: polybutadiene: polyacrylonitrile and their copolymers with styrene, styrene homologs or acrylic monomers: polyvinyl alkyl ethers such as methyl, ethyl and butyl ethers. : acrylic and methacrylic polymers such as polybutyl acrylate and its copolymers and polybutyl methacrylate; and vinyl acetate polymers. Tacky and tacky resins that can be used in adhesives include, for example, rosin and rosin esters, hydrogenated rosin esters and alcohols, viscous liquid polystyrene and polystyrene homologues (of low molecular weight), low Polyisobutylene or other low molecular weight polyolefins: and terpene polymers such as poly-alpha-pinene. If necessary, a tackifier, e.g. 12
It is also possible to add long-chain hydrocarbons containing the above carbon chains, such as paraffin and polyethylene waxes, fatty acids and their derivatives and polyethylene glycols.

In addition, mineral oil, liquid polybutene,
Liquid polyacrylates, softeners (plasticizers) such as lanolin, anti-aging agents such as dithiocarbamates (metal salts) and metal chelating agents may also be added.

The peelable adhesive layer 2 generally has a weight of about 0.5 to about 50 g/
Can be applied over a range of m ² .

A transparent thin film sheet 3 is bonded to the adhesive layer 2. As the thin film sheet 3, various films such as polyester, polystyrene, polyethylene, polypropylene, polycarbonate, and polyvinyl chloride can be used, and the thickness is approximately 100 mm.
Submicrons, preferably about 10 to about 80 microns. The surface of the thin film sheet 3 is preferably subjected to a hydrophilic treatment such as a corona discharge treatment or a subbing treatment to improve the adhesion of the pigment layer 4.

The pigment layer 4 contains physical development nuclei for the silver complex diffusion transfer method, such as sulfides or selenides of metals such as gold, silver, platinum, palladium, cadmium, zinc, nickel, cobalt, lead, and copper, as well as noble metals. Contains fine particles. The hydrophilic colloid binder used in this pigment layer 4 is preferably a proteinaceous material such as gelatin and related materials, which may be partially or completely replaced by other photographic binders such as colloidal albumin, casein, carboxymethyl cellulose, hydroxy Can be substituted with cellulose derivatives such as ethylcellulose, agar, sodium alginate, sugar derivatives such as starch derivatives, synthetic hydrophilic colloids such as polyvinyl alcohol, poly-N-vinylpyrrolidone, polyacrylic acid copolymers, polyacrylamide, etc. . This binder ranges from about 0.1 to approx.
It is used in a range of 10g/m ² .

The pigment used in the pigment layer 4 is titanium dioxide,
White pigments such as barium sulfate and zinc oxide are preferred. However, the part of the continuous tone image where the image-receiving material of the present invention should be peeled off and pasted has a reflection density of approximately 0.5.
There are many black or colored ones with ~1.5,
Lightly colored pigments may be used as long as the pigment masks the image and the pigment image has a reflection density of about 0.3 or less. The amount of pigment is generally from about 1 to about 20 g/m ² , preferably about 2
~10 g/m ² , preferably more than the binder.

An intermediate layer may also be provided between the pigment layer 4 and the thin film sheet 3.

On the other surface of the substrate 1, a physical development nucleus layer 5 substantially free of pigment is provided. As for the physical development nucleus and the hydrophilic colloid binder, those mentioned above are used. The amount of binder is determined in consideration of curl balance with pigment layer 4, etc., but is generally in the range of about 1 to about 10 g/m ² . The core layer 5 can contain various commonly known additives.

Next, the process will be explained using FIG.

A text manuscript (original) is photographed using negative material used in the DTR method. In this case, a direct positive silver halide emulsion is used as the negative silver halide emulsion layer 6. When the silver halide emulsion layer 6 of this negative material and the pigment layer 4 of the image-receiving material of the present invention are combined and processed by the well-known DTR method, a silver image opposite to the original is formed in the pigment layer 4. This image-receiving material is then treated with a known etching bleach solution, such as one with the following formulation, to remove the silver image and create a pigment character corresponding to the original.

Etch bleach solution [Liquid A (500ml) Cupric chloride 2.5g Citric acid 2.5g Liquid B 3% H ₂ O ₂ aqueous solution 500ml (Mix liquids A and B to make 1)] Next, thin film sheet 3 When the sheet 3 is peeled off from the base 1, the sheet 3 is peeled off with the adhesive layer 2 attached to its back surface.

When creating a negative pigment image with respect to the original, a similar process can be performed using a negative silver halide emulsion.

When these peeled pigment characters are pasted onto a continuous tone image, a draft manuscript is completed.

On the other hand, various negative materials and the nuclear layer 5 are brought into close contact with each other.
A silver image can be formed by implementing the DTR method. A reflective image is obtained when the substrate 1 is an opaque support such as polyolefin resin coated paper.
In the case of a transparent support such as a polyester film, a transmission image can be obtained, and when the pigment layer 4 is untreated, it can also be used as a reflection image. Pigment layer 4
and the core layer 5 may be imaged at the same time by the DTR method, or one of them may be imaged first and then the other may be imaged.

(F) Effects of the invention By using the image-receiving material of the invention in combination with a negative material having a direct positive silver halide emulsion layer, there is no need to use a lithographic film, etc.
It is inexpensive and can efficiently create a manuscript with a reflection line image that can be pasted on a continuous tone image with simple processing, and can create a reflection or transmission silver image using the nucleus layer provided on the other side of the substrate 1. Because it has such multipurpose functions, it is extremely useful both in terms of work and economy.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the image-receiving material of the present invention, and FIG. 2 shows a process of creating a block copy using the image-receiving material of FIG. 1. DESCRIPTION OF SYMBOLS 1...Substrate, 2...Adhesive layer, 3...Transparent thin film sheet, 4...Pigment layer, 5...Physical development nucleus layer, 6...
...Silver halide emulsion layer.

Claims (1)

[Claims for Utility Model Registration] (1) A transparent thin film sheet with a peelable adhesive layer interposed on one side of the substrate and a pigment layer containing physical development nuclei on the transparent thin film sheet, and a pigment layer containing physical development nuclei on the other side. An image-receiving material characterized in that it has a physical development nucleus layer that does not contain any organic matter. (2) The image-receiving material according to claim 1, which has a releasable adhesive layer on the surface of the substrate treated with a release agent.