DE723913C - Process for making multicolored copies on multilayer material - Google Patents

Description

Process for making multicolored copies on multilayer material The invention relates to a method for producing multicolored copies under Use of a multi-layer copying material, which is particularly suitable for the known two-pack receiving method is adapted. In this two-pack lenticular process, as is known, in order to give the partial excerpts the best resolution, the one on the gridded one is useful Register front film. ten color separations in the reversal process to positives, the on On the other hand, the color separation registered in the back film developed into a negative.

The new copy material used now carries, appropriately on both sides of the support, two layers that contain the dye for the finished image from the start and which are later processed using the silver dye bleaching process, and a layer containing no such dye and later after a known one Toning process is converted into a color image. It remains at liberty to do this last layer for the purpose of image enhancement with a non-image structure To provide umbrella dye, which later disappears again in the course of processing. Those on the lenticular front film are produced on the two colored layers Two-color separation positives copied, developed and bleached in a known manner. This results in two partial color positives in the two layers. On the third unge. colored layer, the partial excerpt from the back film is copied and after development and fixation in a known way the silver image in a dye image, which is now positive is convicted. It lies afterwards, although one of positive and negative partial excerpts goes out, all three partial images correctly in positive.

This combined method is particularly advantageous for the iron blue image as the third partial image produced by toning. The others After the silver dye bleaching process, both layers produce the purple or Yellow image.

The following examples may describe the working method in more detail explain: Example r A film prepared on both sides is on one side doused with a purple colored, red sensitized emulsion; on it will a yellow colored emulsion which is sensitized to green is applied. On the other On the side of the film is an uncolored, green sensitized emulsion. the two colored emulsion layers are exposed after intermediate positives while the back is exposed after a negative. After developing it becomes the double layer faded on one side in a silver fading bath, while the reverse image is transformed into a blue picture by an iron blue bath. Naturally, the Sequence of production of the individual color images, if necessary after painting of the first Eisenblaubi '.. de-3 also perform differently. -Example z As A green sensitized lenticular lens film is used for recording the front film of the blue and green excerpts, a red sensitized non-screened film as the back film Film to record the red extract. The two intake filters are correspondingly yellow and purple. The front film undergoes reverse development, while the Reverse film is developed into the negative. When copying onto the film according to the invention this is placed between the front and back film; from the side of the front film the copy is made in such a way that filters are inserted in place of the recording filter whose transparent area is the sensitivity of the silver dye bleach layers corresponds, in such a way that the green separation into the purple dye-containing layer is copied. The back film goes into the toning layer from the other side copied. Example 3 A simple lenticular film can also be used as a recording film serve, which picks up all partial extracts through a red, green and blue filter and which is developed to the positive. An excerpt, e.g. B. the red extract, is on one Copied auxiliary film which is developed to the negative. Copying on the invention Multi-layer copy film can now be made in the same way as in Example i. All you have to do is pay attention to it. that in the copy of the lenticular film the place where the red filter was when the picture was taken is now covered.

Example q.

The partial excerpts can also be recorded using the beam splitting method or three films are exposed separately by successive exposure. In these cases it is only necessary to ensure that the silver color bleaching coats corresponding master copies positives corresponding to the toning layers Originals are negatives, with the positives being generated directly by reverse development of the recording material or can be obtained as intermediate positives by copying the negatives.

Claims (1)

CLAIM OF THE PATENT: Process for producing multicolored copies .auf Multi-layer material, characterized in that one material is used for copying is, in which at least two of the single or double sides of a carrier are arranged photosensitive layers (a) which already contain the final image dye, are combined with those layers (b) which are also involved in the image structure, which contain no image-forming dye, the blue-sensitive Layer unsensitized and the other layers only for part of the visible spectrum are sensitized, and that the layers (a) by the silver dye bleaching process and the layers (b) are converted into color images by a toning process.