SU679925A1 - Photographic material - Google Patents

Description

(54) PHOTOGRAPHIC MATERIAL

one

The invention relates to photographic materials shown in physical displays that are used in photography and other technical fields.

A photographic material is known that appears in a copper or nickel physical developer, consisting of a substrate and a photosensitive layer, including palladium chloride and iron oxalate 1. The disadvantage of this material is low sensitivity to light.

The closest to the proposed is a well-known photographic material, shown in a physical developer, consisting of a substrate and a photosensitive layer based on a pre-arbor 1,4-naphthoquinone, for example 2-diethylaminio-3-CM, 4-naphthoquinone 2. The disadvantage of this The material is that a latent image consisting of reduced derivatives of quinones cannot persist for a long time due to the oxidation of oxygen in the presence of water vapor. The instability of the latent image also leads to a decrease in the photosensitivity of the material.

The aim of the invention is to increase the stability of the latent image.

The goal is achieved by the fact that the specified photographic material, shown in a physical developer, consisting of a substrate and a photosensitive layer based on a 1,4-naphthoquinone derivative, contains 2-morpholino-1, 4 as a 1,4-naphthoquinone derivative -naphthoquinone or 2-morpholino-3-CB-5-H50z-1, 4-naphthoquinone. In order to improve the physicomechanical properties of the photosensitive material layer, it may additionally contain polyvinyl alcohol or another polymeric binder, for example gelatin.

The proposed photographic material is prepared by impregnating a paper substrate (the substrate can also be made of cellophane or an acetate film) in an aqueous solution of the indicated 1,4-naphthoquinone derivatives. Up to 5% polyvinyl alcohol or another polymeric binder can be added to the aqueous solution.

The dried material is exposed and treated in a PdCfj solution, and then in a physical developer.

Example I. Saponified acetate} The first film is impregnated in an aqueous solution of 2-morpholino-1, 4-naphthoquinone for 5 minutes and dried in the dark. The photographic material obtained contains a photosensitive component at a concentration of lO-- 2-10 mol / cm. The photosensitive layer is exposed to the light of the PRK-2M ampou for 10-30 seconds and immersed in a 0.002 M aqueous solution of PdCfj for 1 min. After that, the material is washed in distilled water and develops in a nickel-based formulation, g / l: Nickel chloride 30 Sodium hypophosphate 20 Sodium citrate trisubstituted. 88 Ammonium chloride -50 Ammonia to pH 8-10 Example 2. A cellophane film is impregnated in a 10 M aqueous solution of 2-morpholino-1, 4-naphthoquinone or 2-morpholino-ZCE-5-H 503-1, 4-naphthoquinone for 5 min and dried in the dark. The resulting material contains a photosensitive component in a concentration of 5-10- - 10- MOL / CM. The photographic material obtained is exposed to a incandescent lamp with a power of 200 W at a distance of 30 cm for 10–30 s, and the material exposed is shown as in Example 1.

Example 3. Prepare 10 M solution

2-morpholino-1,4-naphtohnnon in 5% aqueous solution of polyvinyl alcohol. The resulting mixture is applied to a glass substrate, paper or film and dried. The photographic material obtained contains a photosensitive component in a concentration of 5–10–– 2–10– mol / cm. Photosensitive layer

The material is exposed to the full light of the PRK-2M lamp at a distance of 25 cm for 1030 s, treated in a PdCtf 0.002M solution and developed in a nickel physical technology as in Example 1.

Example 4: A photosensitive material is prepared and exhibited, as in Examples 1-3, but is manifested in a copper physical formulator, g / s:

Copper sulfate 10

KNa tartaric 50

NaOH15

Formalin 40% -40 ml / l

Example 5. A paper substrate is impregnated in a 10 M solution of 2-morpholino-1,4-naphthnnon for 1 minute and dried in the dark. The resulting material contains a photosensitive component in a concentration of 1 - 2-10-mol / cm. Photosensitive layer

the material is exposed and developed as in examples 1 or 4.

Example 6. A photosensitive material prepared as in Examples 1-3 or 5 is exposed to the light of a PRK-2M lamp at a distance of 25 cm for 5-10 seconds or a 200 W incandescent lamp at a distance of 30 cm for 10-30 seconds and washed in silver physical composition, g / l:

Salt Mora 78.4

Re (XOZ) s20.2

Citric acid18,8

AgNOj.12,3

Dodecylamine acetic, 02 wt.%

OP-7 (wetting agent) 0.02 wt.%.

The results of the comparative tests of the proposed and well-known photographic materials are shown in the drawing as characteristic curves in the coordinates D - (optical density of the developed image) - SdH (H is the exposure value).

Photographic materials are cellophane substrates impregnated with aqueous solutions of the corresponding dyes of equal concentration.

Characteristic curves of photo layers:

1- photosensitive component - 2-morpholino-1, 4-naphTohinon;

2- 2-morpholino-1,4-naphthoquinone;

3- photosensitive component — 2-diethylamino-CS-1, 4-naphthoquinone- (developed immediately after the exposure);

4- 2-ditylamino-CZ -1,4-naphthoquinone. Curves 2 and 4 are obtained in the case of

one day after exposure of the samples.

From the graph, it follows that the well-known photographic material 2 based on 2-diethylamino-3-CE-1,4-naphthoquinone has a significantly worse stability of the latent image and, as a result, a lower sensitivity than the proposed photographic material.

Claims (2)

1. A photographic material developed in a physical developer, consisting of a substrate and a photosensitive layer based on a 1,4-naphthoquinone derivative, characterized in that, in order to increase the stability of the latent image, as a 1,4-naphthoquinone derivative it contains 2-morpholino-1,4-naphthoquinone or 2-morpholino-3-CE-5-H80s 1,4-naphthoquinone. 2. The photographic material according to claim 1, characterized by the fact that, in order to improve the physical and mechanical properties of the photosensitive layer, it additionally contains polyvinyl sgrt. Sources of information that are considered in the examination } 5.0 1. Author's certificate CCCP.N 318336, cl. G 03 C 1/64, 1967. 2. USSR author's certificate number 401239, cl. G 03 C 1/72, 1976. 6.0