What is involved in the grature printing process?

The gravian printing process is a modern type of automated Integlio procedure used to print commercial materials such as wrapping paper, magazines, postcards, catalogs, advertisements for newspapers and food packaging. Usually the press contains several smaller units for each color in the print process: purple, black, cyan and yellow. Each unit contains a rubber roller coated with rubber and an engraver cylinder, which is pre -involved in an image, with a deeper engraving of more intense colors in the final product. In the ink bath, the engraver cylinder cylinder rotates, with an excessive amount of ink erased using a flexible Squeegee blade. The remaining ink is then immediately transferred directly to the surface to be printed by means of the force of the impression cylinder. The printed substrate must be handed over to an electric or gas firing between each application of separate colors. It is necessary that previously printed layers are not blurred or blurred when using another layer.

, also known as Rotografure, the gravian printing process is usually used for high -term or long -term printing tasks. This type of printing is generally tailored to specific product applications. The playful cylinder is often made of steel with a copper with a coating that is sensitive to light. Historically, the cylinders were chemically etched or engraved by the stylus of diamond quality; In modern times they are mostly engraved by lasers. Although it is significantly more expensive than other types of printing processes, the cylinders of the gravíre are known for their ability to produce a high amount of impressions without demonstrating significant image degradation.

Although Lisys is sometimes used for a special role, it is more common for the engraver printing process to include websites or rolls of paper or other substrates. When reproducing high quality photography or other visual art, a press fed sheet is likely to be used. The process of printing the engraver print consistentlyIt provides a wide range of density, which is reflected in the printed picture in detail of light and shadow.

Grature Printing has long been used to print photographs in the newspaper. Between 1930 and 1970, it was common for newspapers to print a separate Sunday section with photographs with subtitles. The 1932 Gallup survey determined that RotoGravy or "Rotos", as they were sometimes known, attracted a wider audience than other newspapers section, so these sections were very desirable for advertisers.