Main

Expressive motions
Vyrastnoy the pond
Vyrgan
Carp
Vyritsa
Degenerates
Degeneration
Degenerations the temperature
The degenerate gas
Vyrtsyarv
Vyru
Cuts
Gain from the realization
Debarkation
Vysadkoposadochnaya machine
Setting down apparatus
Salting out
Sowing apparatus
Scraping out
Statement
Upstart
Length of service
Listening
High
High komissiya&.tsuot
High press
High plateaus
High plains
High
High atlas
Isolation

Образование - счетчик, рейтинг, каталог - FLEXER

High press

typographical press, one of osn of the methods of poligrafich. of the multiplication of the text and figures, with which the printing and bleaching elements of form are located on the different levels (not in one plane), that print - are above, but bleaching - are below. This provides the possibility during rolling of elastic rollers with the paint to bring it selectively, only to the printing elements and to transfer from them paint to the sealed up surface. Because of relative simplicity and rapidity of the production of printed forms (in particular for the reproduction of text), to a good quality of production and high productivity, v. p. it widely adapts for the printing of newspapers, periodicals, books, polychromatic illustrations and the like by the characteristic features of the impressions, obtained by v. p., are clearness and sharpness of image elements, large saturation their paint and the presence of small relief on the reverse side sheet.

Principle v. p. is used already more than 1000 years. The first printed forms were the flat, with the flat and smooth surface wooden boards, on which the image was obtained, cutting out (deepening) the nepechatayushchiye bleaching elements. Such forms use sometimes and now as one of the methods of the artistic reproduction (see xylography, engraving). The invention of printing and wide development v. p. are connected, first of all, with the creation of composite printed forms from the separate cast or carved letters and the signs. Contemporary text forms v. p. comprise by hand from the separate, preliminarily poured letters and the signs, or they collect in the setting machines (letter and strokootlivnykh), and also on the phototypesetting. Different images (illustration) in v. p. print from the cliches,obtained by etching (zincography) or engraving. Distinguish printed forms primary and second. Primary, or original, form v. p. - flat forms, which include collection and cliche, from which directly is produced the press, and also Vol. n. the flexible forms, relief image on which is obtained the etching of gaps on the metallic plate or the "washing out" of them in the photopolymeric layer, substituted to the base layer. Second forms, or stereotype, obtain from the primary, mainly for their multiplication or for preparing the circular shapes for the purpose of printing in the rotary printing machine. Contemporary second forms v. p. - metallic cast, plastic or rubber pressed or gal'vanostereotipy. Printing from the flat forms v. p. is produced to tigel'n'^ or Vol. n. of flat-bed printing, machines, from the circular shapes - in the sheet or reel-fed rotary machines. There is also a method of tipoofsetnoy press, with which the image from the printed form is transferred first to the rubber fabric (cylinder, coated by rubber), and from it to the paper. Contemporary rotary printing machines v. p. make it possible to print the illustrated polychromatic newspapers, periodicals, books, etc. on the continuous paper sheet latitude to 2 l with a speed of from 3 to 15 m/s.

L. l. kozarovitskiy.