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Chromolithography is a method for making multi-colour prints. This type of colour printing stemmed from the process of lithography, [1] and includes all types of lithography that are printed in colour. [citation needed] When chromolithography is used to reproduce photographs, the term photochrome is frequently used.
There is a high level of control over color matching, and multiple colors can be printed simultaneously. Unlike screen printing, digital ceramic printing on glass does not require screens and the files are stored digitally making printing of all sizes and replacement of any panel simple, in high resolution, full color. [3]
Multi-color printing was introduced by a new process developed by Godefroy Engelmann (France) in 1837 known as chromolithography. [3] A separate stone was used for each color, and a print went through the press separately for each stone. The main challenge was to keep the images aligned (in register). This method lent itself to images ...
HKS is a color system which contains 120 spot colors and 3,250 tones for coated and uncoated paper. HKS is an abbreviation of three German color manufacturers: Hostmann-Steinberg Druckfarben, Kast + Ehinger Druckfarben and H. Schmincke & Co.
This method, using small measured registration marks on both the stone and the paper, is very accurate and simple to do. The printer measures the exact size of the paper and the desired margins. Then marks are made at both ends of the sheet of paper, and corresponding marks (usually in the shape of a "T") are made on the stone.
Offset printing is a common printing technique in which the inked image is transferred (or "offset") from a plate to a rubber blanket and then to the printing surface. When used in combination with the lithographic process, which is based on the repulsion of oil and water, the offset technique employs a flat (planographic) image carrier.
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