DE27240C - Process for the transmission of photographic images in color - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 57: Photographs.

Patented in the German Empire on November 6, 1883.

The invention relates to a new method of making after existing photographic Images to make casts, and indeed can practice this new process take place in one of the following ways:

ι. Either a gelatin relief made by Woodbury's method (or a die made according to the latter) and lays this relief on a sheet of paper or a other appropriate material; they put you on the other side of the paper Fabric with a smooth surface, to be explained in more detail below, partly with printer's ink is so colored that the color is regular dots or close together forms horizontal strokes or lines. The whole thing then becomes more mechanical by means of appropriate means Fixtures tightly pressed together, causing the paint to settle and on the paper sticks and thus forms a stippled or streaked image or a colored collotype, which corresponds to the gelatine relief. This image can be printed on one of the in, the printing house Ways are transferred to metal or brought to stone; you can do the same in addition also photographic and then the transfer according to one of the in photolithography or photozinkography known methods.

To explain what was done with the smooth-surfaced material, which was partly with printer's ink is so colored that the color is regular dots or close together Forms horizontal strokes or lines is meant, the following means may be cited as examples will:

1. a lithograph stone;

2. a zinc plate on which a stippled

or any kind of striped background is printed on it;

3. any plate;

4. a piece or sheet of paper, plain or enameled, on which there is a staining or stippling has been pressed or applied from printer's ink.

2. This can also be done in another modified manner when practicing the invention A piece of fine network or loose tissue can be made with either printer's ink or saturated with an ink used for lithographic transfers, wherein Care must be taken that the meshes of the fabric are not clogged with color, but that they are in spite of this, every single thread is well saturated. This so dyed fabric is on put the paper or the same equivalent material, and on the paper or the Fabric itself is then brought to the Woodbury relief and the whole thing again, like described above, subjected to mechanical pressing, whereby the color of the Tissue is deposited on the paper and on the latter creates the stippled image that corresponds to the Relief corresponds. This image is then, as described above, on metal in a known manner or stone transferred or after taking photos for the purposes of photolithography or photo zincography is used.

3. The method can also be carried out in such a way that the stippled or streaked image appears directly on the zinc or corresponding metal plate or the lithographic stone; for this purpose, the dyed fabric is placed on the slab or stone, then the Woodbury relief is applied to it Tissue and now runs the middle of any

mechanical devices act on the whole.

In addition to the products of the textile industry, fine wire meshes and the like are also included Tissues that can be used in this process must be taken into account.

4. Another application of the process would be that after the one to be printed Create a Woodbury gelatin relief on the paper or equivalent to put and on the other side of the latter a roughened, stippled or streaked plate bring the rough surface of which has been inked with printer's ink, d. H. so that the roughened Next to the paper. The whole thing is then subjected to mechanical pressure again as in the above examples, whereby the color settles and the image appears on the paper, whereupon again proceed according to the information already given above.

When carrying out the invention explained hereby, the paper used or equivalent Material with an overprint image printed by means of a deepened cut Stone (hollow camee) or a relief like the Woodbury relief. By molding, Gufs or electrotype are therefore obtained from the above-mentioned overprint image as a printing plate. In such cases, coloring the roughened surface or using Bypassing printer's ink in the manner described above. It could also be the non-colored overprint obtained in this way can be colored on the paper or corresponding material itself with the aid of an ink roller or a stippling device such that an image or overprint is produced in printer's color.

For better clarification of various expressions it should be noted that under Woodbury relief the relief produced in a gelatin layer after a photograph or a The matrix of this is to be understood as what is to be assumed as generally known and therefore no further explanation is required. Under a roughened, stippled or streaked plate a plate of moderately hard material is to be understood, which has at least one roughened or has streaky surface; for example a metal plate or a block of wood that grooves or stippled, or -a matrix thereof in cellulose, dry gelatin or ebonite, or emery cloth, sand or ribbed paper. Under material which the Image-receiving paper corresponds to those flexible materials that have an imprint easily accept from printing ink; among others are to be counted: Tracing paper, tin or other metal foil, gelatine in sheet form, gold foam, tinfoil, Silk gauze, fabrics and other fabrics. With printer's ink any common one It means printing ink that contains a dye in association with an oily substance; there are also other similar bold colors to be understood, such as special ones presented for transmission purposes and brought into circulation. When the transferred Image is photographed again, so is a color that glycerine, sticky rubber or contains a similar substance as an admixture, very expedient to use. In all cases one must see to it that the printing ink never completely hardens before the inked one Area is used.

Soft wax, grease, firnifs, soap or a mixture of these can in some cases be substituted for the color in which the image is to be transferred to stone or metal.

Claims (1)

Patent claim: The method described for the transmission of photographic images in color, characterized in that: a) that paper or some other equivalent material is placed between a Woodbury's Relief and a surface dotted or striped with printer's ink, or b) that one can see a colored fabric or the like by means of a wooo dbury Reliefs and suitable mechanical devices against paper or another corresponding fabric prefst ,. or c) that paper or another corresponding pile "is made by means of a Woodbury's Reliefs and suitable mechanical devices against a roughened, previously colored plate prefst, d) that a pressure or overprint is produced in relief or cut in stone by pressing paper or similar material against a roughened plate, a striped or grained surface or a fabric by means of a Woodburyian relief and suitable mechanical ones Devices, whereby the coloring of the aforementioned surfaces is omitted, e) that the image cut in stone (claim d) can be used to produce it of printing or overprinting by coloring the same with the aid of suitable precautions (coloring roller, stippling device) and respectively by imprint.