SU662901A1 - Light-sensitive photographic material for non-silver physical developing - Google Patents

Description

. This invention relates to photosensitive photographic materials for futile physical lingering (CFI), which are examples of. as photographic materials of general and special purpose. I A photosensitive photo graphic material for ceramics-free physical manifestation is known, consisting of 1diode from a substrate and a photosensitive layer including photosensitive bHoe compound, for example silver halide or some semiconductor oxides, as well as gelatin as a binder 1. A disadvantage of the known material. is the poor quality of the image obtained on this material, as well as the deformation of the photosensitive layer of the material during its chemical-photographic processing. This is explained by the release of gaseous products during the development, which slows down this process and reduces the maximum optical density, layer deformation, bbr: defects in the polymer film. in the form of punctures, irregularity of metal deposition from the zazel, ultimately the image is not of satisfactory quality. The aim of the invention is to improve the quality of the image and to eliminate the deformation of the photosensitive layer during chemical processing. ., The goal is achieved by the fact that the photosensitive layer of a well-known photographic material, which includes a photosensitive body, water and gelatin, additionally contains divinyl copolymer with styrene and / or ether or non-valuable aliphatic nitrile; acids in the form of latex in an amount of 50-200 wt.% by weight of gelatin, preferably a copolymer of divinyl and methyl methacrylate, the amount of 98,100 wt.% of the weight of gelatin. The proposed photographic material allows obtaining high quality images. On the basis of the proposed photographic material, photographic Materials for various purposes (photographic paper,; photographic films) can be made using various known materials for substrates (paper, polymer films), as well as the introduction of known technological additives, wetting agents, plasticizers, tanners into the photosensitive layer; -sensitizers, etc. PRI me R 1. To 125 ml of bromide silver gelatin emulsion with a content of c € spe6pa - {in terms of metal) .16 g / l and gelatin content 80 g / l were added d tilirovana -1a water 695 ml, bleach 2132 43 ml, glycerin 35 ml wetter 1147 (6% solution) 4.3 ml, chromic alum neutral (10% solution) 8.7 ml, 40% latex copolymer divinyl and methyl methacrylate (DMMA) 12.5 ml (material 1) and 50.0 ml (material 2). A control pro-type that corresponds to a type is obtained using a similar photosensitive composition in which the DMMA latex is replaced by an equal amount of distilled water. The prepared light-sensitive compositions are applied on an irrigation machine on a baritated paper base and are exposed behind a stepped wedge. Processing of materials carried out according to the scheme given in Table 1. The test results obtained photographic materials are given in table 2. From Table 2 it follows that the proposed material provides an increase in the FFT speed, maximum optical density, and image quality. Example 2. Samples of photosensitive halogen of pre-stocked papers are prepared analogously to example 1 with the introduction of divinyl and methyl methacrylate copolymer (1), divinyl and acrylate (2), divineL and styrene: a (3), divinyl and butacrylate methacrylate (4 ), divinyl, butyl acrylate and styrene (5) in the amount of (in terms of dry polymer) 100 weight,% by weight of gelatin. Parallel but make a control image is not. containing latex, according to the prototype. Exposure and processing of materials is carried out according to the scheme of Example 1. The time of appearance in a nickel physical developer is 10 minutes. The test results are shown in table 3. PRI me R 3. Photosensitive compositions, one of which corresponds to (phototype, and the other, contains cc5 polymer of DMMA latex in an amount of 200 wt.% By weight of gelatin, are prepared as in Example 1 and applied to a sublayered triacetate base. Silver content ( in terms of metal) is 0.17 g / m. After exposure after the step-by-step cleavage sample, the samples are processed in accordance with the scheme shown in Table 4, as a result of this processing a positive image is obtained, the test results are given in that L.5. PRI me R 4. The photosensitive composition is obtained by mixing an aqueous dispersion of zinc oxide and an aqueous film-forming solution. To prepare an aqueous dispersion, 2 g of zinc oxide are mixed in a ball mill with 15 ml of water and 2 ml of 6% solution wetter CB-104 2h. Then 19 ml of a 12% solution of gelatin is added to the dispersion, and then 5 ml of distilled water is added in one case (control sample), 5 ml of 40% di-vinyl butyl acrylate latex into another and stirred for another 30 minutes After exposure to a medium-mercury lamp (power 375 W) at a distance of 50 cm 10 s, glass plates with photosensitive compositions are treated for 2 minutes in silver nitrate solution, washed with running water for 5 minutes and developed in a copper-formaldehyde product wittel example 3. The results. tats are presented in table 6. EXAMPLE 5 A photosensitive composition is prepared by mixing 10.0 ml of 12% gelatin, 2.5 ml of a 0.2% dye solution, methylene blue, 5.0 ml of a 3.7% Trilon solution B. Control material; get an introduction c. this composition is 32.5 ml of distilled water, and the proposed one is the addition of 4% DMMA latex in the same amount. Both photosensitive compositions are poured onto a paper base, laminated 1} on both sides with a plastic film (which prevents the substrate from dyeing with dye), exposed to an iodine cycle lamp (power; 500W, 50 cm from the sample). . The treatment consists of bathing the material in an AgN03 solution for 10 s, then in a 2% aqueous ammonia solution for 1 min, washing for 3 min and manifesting in the copper-formaldehyde developer of example 3 at 20 + 0.5 ° С for 3 min. The test results are given in Table 7f. From the following examples it follows that the proposed photographic material allows obtaining a high quality image without defects; there are no defects on the photosensitive layer.

Table

In a solution containing (g / l) metol 1, hydroquinone 5, sodium sulfite fit 26, sodium carbonate 20, potassium bromide 1, water up to 1 l

Fixing in sodium thiosulfate solution (20. g / l)

Washing in water

In potassium ferrocyanide solution (5 g / l)

Washing in water

In a solution containing (g / l) nickel chloride hexahydrate 20, sodium acetate 10, 2.5% aqueous ammonia in an amount that provides a pH of 7.6-7.7, and hydroquinborane 1

20 ± 0.5

23 t 0.5

5-10

Known (prototype) None

Divinyl and

methyl methacrylate

Divinyl and Acrylonitrile 8

Divinyl and Styrene8

Divinyl and butyl methacrylate

Divinyl, butyl acrylate and styrene

In a solution containing (g / l) metol 1, hydroquinone 5, anhydrous sodium sulfite 26, sodium carbonate 20, potassium bromide 1 and water up to 1 l

Washing in water

In aqueous solution of hydrazine (1:50)

In a solution containing (g / l) copper sulfate pentahydrag 35, sodium nitrate trihydrite 150 tartrate, caustic soda 50, triethanolamine 5 ml / l, 37% formaldehyde 100 ml / l.

Promotions. in water.

Fixed in a solution containing 10 g / L sodium thiosulfate

ten

662901

Table 3

0.0 1.35 Big Kol. number of defects (punctures), non-uniformity of optical densities by layer (d D ± 0,2)

The uniformity of the optical densities 0, 00 1.35 nst (TO 0.02),

no defects

1.7 0.0 1.35 Id

1.7 0.0 1.35, 8 0.0 1.35 -

1.8 0.0 1.35 -VTable 4-,

20 + 0.5 20 ± 2 20 t 2

20 ± 0.5 20 ± 2

20 ± 2

11 Known (prototype) 51.2 0.1. 8 2.0 0.1 Offered

Yontrolny (prototype)

ten

12

Proposed

wfc.

12

662901

T a b person 5

Table 6.

0.9 0.0 1.2

A large number of point defects, the development is uneven (DC + 0.3)

Rayme

1.9 0.0 1.2 optical densities (up to 0.02 defects are absent i V,

Table 7 1.2 A large number of defects 1,2 Defects from sutst