CS240196B1 - Method of syntheses performance in differentiation colours - Google Patents

Abstract

The method is intended for scientific and technical color photo, for example, in remote exploration of the Earth's surface. Replaces syntheses made using a special equipment for three-layer color materials syntheses composed using a professional enlarger and commercial black and white photographic materials. It depends on being in the necessary magnification draws from partial black and white images black and white partial images of the respective sensitometric properties appropriately laterally orientated; these are rehalogenated and re-expose, color-process using colorformers with dissolved colorformers component according to the desired colorant, put it in the register and fix it in it. Some of the partial images can be s advantageous for making download films. This results in improved reproducibility and make the whole process cheaper.

Description

The invention relates to a technology for producing photographic syntheses in distinctive colors, which are used in teohnic and scientific photography, in particular in the remote sensing of the Earth and the Earth's surface.

In this process, the area is scanned on black and white materials by a set of cameras equipped with paste filters from both visible and infrared areas. Syntheses are made from images directly or using derivatives in a special device via additive filters by means of additive copying onto conventional three-layer colored materials. The main drawbacks of this process are the need to use the expensive special equipment mentioned above, and the fact that the three-layer materials used have low reproducibility of the results, so that synthesis can only be used for visual orientation and not for measurement evaluation.

These main disadvantages are overcome by the process according to the invention, which consists in producing, using a magnifying device, original black-and-white partial images corresponding sub-images on a black-and-white photographic material having the desired sensory properties but correcting them to change them in the next process Then the images are rehalogenated and color-recreated; further bleached, stabilized, washed and dried. In the process, the color-forming component is dissolved in the color-forming developer according to the desired synthesis, for the particular image. Of course, it is necessary to rinse or wash the black and white photographic material between the individual baths and, if desired, a wetting bath, hardening bath, etc. may be used before drying. After drying, these differently colored images are put together and fixed to each other.

- 2 240 196

As a rule, two sub-images are required, then one of them is made upside-down, and they are folded together into the index. For multiple sub-images, more than three of which rarely occur, Se. third, respectively. further, they make the images onto shrink films and install them without a mat between the two first sub-images because the thickness of the mat would cause parallax of the images.

By making the syntheses in distinctive colors using the black and white materials of the method according to the invention, a higher reproducibility of the results is achieved because it is used instead of the commercial three-layer color material of black and white photographic materials. devices instead of expensive special equipment, thus reducing investment equipment®

By way of example, the use of the method according to the invention for detecting forest damage will be mentioned, where a sub-image of the infrared section is required to be dyeed on the synthesis with a magenta dye and a sub-image of the red section with cyan dye. From the corresponding two partial negatives, black-and-white positives, one of which is inverted relative to the other, are produced in a conventional photographic manner under usual sensitometric checks and processed further according to the process of the invention. In doing so, one of the conventional color developers, preferably from the inverse process, with the addition of a purple soluble component, is used to color-recreate a partial positive from the infrared region.

1-phenyl-3- (2-methoxybenzoyl) araino-5-pyrazolone, and in the case of a partial positive from the red section with an azure component, e.g.

2- (4-methoxybenzoyl) aminophenol. The rehalogenation bath is preferably a potassium cyanide bleaching bath with a sufficient potassium bromide content of 3 240 196 · Final bleaching, fixing, etc. corresponds to the usual conclusion of the processing of three-layer color photographic materials.

In order to improve viewing comfort, but also for purely photographic reasons, in the present example, the remaining blue-citrate layer of the colored material is uniformly and accurately dosed in the present process. The same effect can be achieved more easily and better in the method according to the invention by using a conventional - in this case yellow - gelatin filter foil enclosed for observation on or below both sub-images or below. inserted between them.

In the process according to the invention, in addition to the above example, other cases of photographic synthesis can be made in order to ascertain the state of the environment, but also for other purposes in scientific and theoretical photography.

pHdmSt of the invention

Claims (2)

1. A method for producing color-synthesized syntheses, in particular for environmental, characterized in that at least two respective sub-images are produced from black-and-white photographic material to either black-and-white photographic material with either a common or opposite side orientation; and reexposed, then recalled in the color-forming developer with the dissolved color-forming component for the desired dye, at the same time being dyed, bleached, stabilized, washed and dried, and finally registered in the fixation register. 2. Method according to claim 1, characterized in that one or two sub-images are made into a black-and-white photographic film and the other sub-images into a black-and-white photographic download film which are inserted without registration between the first two sub-images.