Bureaucracy originated thousands of years ago.Once, during archaeological excavations in Egypt it found a great many clay tablets with the same text.Rewriting while engaged in teaching slaves to read and write.
first technology on which began to produce copy paper, was patented October 7, 1806 in the UK.The paper was two-way, impregnated with ink.The invention of the famous "carbon paper" belongs to Ralph Wedgwood.
in 1820 Photocopier paper-based soot began to produce on a commercial scale.The peak of her popularity came in the 70's, when they began to appear en masse typewriters.The coverage began adding mastic, thus avoiding a lack of previous version - contamination of all it touches.Before the advent of modern copying equipment (copier, fax), carbon paper was very popular.Today it is not so popular, and is mainly used in the clothing business.
Carbon paper has low density.On one side it caused the ink layer, which helps to get at writing, printing or drawing multiple copies.The sheet is laid between the dye layer of plain paper down.When writing on the sheet located on the top, by pressing the handle coloring particles pass on a piece of planted below a blueprint.
With this paper, you can obtain copies of various documents.Today issued a special light-sensitive materials, there are also variations, designed for enhanced contrast blueprints.
also now there phototechnical Reflex paper copies with original bar (single and double) method of contact copying.There were also fotostatnye photosensitive materials (negative and positive) to obtain copies from the bar and half-tone originals photocopying.Another view - fotokalka, which is used to obtain copies of the originals with a bar using the contact printing and projection.Also used for thermosetting copy paper reflex replication in heat (IR) rays and thermally transfer the image on the plain paper.Photosemiconductor copying materials are printed on the surface of a thin light-sensitive semiconductor layer based on zinc oxide.
Office copy paper, which you can buy at many stores, has a high-contrast images.Time to produce copies may require from several seconds to a minute or more.According to the technology of processing (fixation, display, etc.) And the duration of storage of copies as there are different types of paper.
often used for copy and plain paper, not treated as if kontaktno- or matrix-figurative method of copying, as well as through the reproduction of the original features of offset printing.
