Friday, June 14, 2024
Home Lastest How many categories does the printing industry have?

How many categories does the printing industry have?

by admin
0 comment

classification of printing:
printing format:
according to the type of printing plate, it is divided into relief printing, lithographic printing, gravure printing and hole printing
if you use a magnifying glass with large magnification to observe and compare carefully, you can roughly determine what kind of printing it belongs to in terms of the appearance of the printed matter
any printing ink piled up on the line is a concave copper plate or concave steel plate printing. Because the printing ink of the concave plate is stacked in a deeper groove, the ink is thicker
those pictures covered with faint white line checkered cloth patterns, with strong ink color in the dark part and weak ink color in the light part, are ordinary photographic intaglio prints. Therefore, there is a white line checkered cloth pattern, which is vaguely covered with the picture. It is that the screen line is added during plate making to prevent the scraper from scraping the ink in the image groove during printing
lithographic prints are those with thick ink color in the center of lines or dots, irregular edges and no stacking. It is because the imprinted and non imprinted parts of the printing plate are flat, and the edge parts are eroded by water. At present, lithography is widely used in color printing in various countries
relief prints are those with slight raised marks on the back of the paper, neat lines or dot edges, and the printing ink is lighter than the central part. This is a physical image of heavy compression and extrusion of the raised image edges
any picture covered with crepe, like a washed stone concrete wall, with thick ink in the dark and weak ink in the light, is a collotype print. The crepe pattern is formed by the shrinkage of the adhesive film of the plate due to different light during plate making, which is similar to the mountain valley formed in the orogeny, so as to carry the printing ink
for other printing such as bottles and cans, curved surfaces and general circuit boards, perforated plates are often used

printing procedure:
according to the printing production procedure, there are direct printing and indirect printing
for direct printers, the printing ink of the layout is in direct contact with the printed material, and the printing ink is transferred on it. All relief printing machines (including the latest rubber plate or plastic plate rotary machine) and gravure printing machines, as well as the hand lithography machine in the oldest lithographic printing machine, are direct printing
for indirect printing, the printing ink of the layout is first transferred to the rubber cylinder, and then transferred to the printed material by the rubber cylinder, such as the commonly known rubber printing press ()
for direct printing plate, the image is a reverse image; The image of the indirect printing plate is positive

printing principle:
according to the principle of producing printed matter in the printing process of the printed part and the non printed part of the printing plate, it can be divided into physical printing and chemical printing
for physical printers, the printing ink is completely a kind of accumulation and bearing in the image part, while the non image part is concave or convex. It is different from the height of the image part and cannot be stained with the printing ink, leaving it blank. Therefore, the transfer of the printing ink in the image part to the printed material is only a physical mechanical action. Generally, relief printing, intaglio printing, hole printing, dry lithography, etc. are physical printing (the printing surface is higher or lower than the non printing surface)
for chemical printers, the non inking of the non image part (non printing surface) of the printing plate is not caused by the concave, convex or blocked part, but by the chemical action to produce a film that absorbs water and repels ink. Of course, it is still a physical phenomenon that the image part (printing surface) absorbs ink and repels water, the non image part absorbs water and repels ink, and the water and grease backwash each other. However, during the printing process, the non image part must be continuously supplemented with a film that absorbs water and repels ink, so it is chemical printing. The printing of lithographic rubber printing machine belongs to this category. Acid and gum substances must be added to the water tank solution to supply the mucus acid layer of carboxyl group from source to source, so as to keep the non printing face of the printing plate from being infected by grease

printing color:
according to the color display of printed matter, it can be divided into monochrome printing and multicolor printing. Monochrome printing is not limited to black. It is true for anyone who displays the image in one color
multi color printing is divided into three types: case method, register method and multi color method
for the color enhancement method, add another color within the double line range in the monochrome image to make it clear and bright, so as to facilitate reading. The printing of general children’s books is mostly used
in the chromatic method, the colors are independent, do not overlap each other, and there is no other color to make the boundary line of the range, which is successively overprinted on the printed material. Generally, the printing of lines, tables, commodity packaging paper and terrain are mostly used
for the multicolor method, according to the additive color mixing process, the natural color original is decomposed into the primary color separation plate, and then the primary color plate is reprinted on the same printed material by using the color mixing process. The natural color printed matter of the bishop original is also obtained due to the different overlapping area of the primary colors. All color prints, except for a small number of additive and chromatic methods, are printed by multicolor method

banner

printing plate material:
according to the plate material used for printing plate, there are wood plate, stone plate, zinc plate (sub lead plate), aluminum plate, copper plate, nickel plate, steel plate, glass plate, stone gold plate, American plate, electroplating multilayer plate, paper plate, nylon plate, plastic plate, rubber plate, etc
wood plate, hundred plate and glass plate can only be used for flat bed printing because they cannot be bent. Copper plate and steel plate are mostly used for gravure printing. The rest are used for lithographic or rotary presses
alloy plates include paper type lead plates cast in lead, antimony and tin alloy solution or typesetting cast as movable type. There are magnesium and aluminum alloy miracol plate, and Monel metal of copper and nickel alloy
the multi-layer metal plate has a bimetal plate with a chromium surface and a copper bottom and a three-layer metal plate with a chromium surface and a copper steel bottom (even with stainless steel)
due to different plate materials, the printing press, printing ink, printing technology and printing effect are also different from each other

printed materials:
according to the different printed materials, there are paper printing, white iron printing, plastic printing, textile printing, wood printing, glass printing, etc
paper printing is the largest type of printed matter, accounting for about 95%. It can be applied to letterpress, lithography, intaglio and hole plate, so it is called ordinary printing
printed materials other than paper are mostly special printing

purpose of printed matter:
due to different types of printing business, the purpose is also different. Such as book printing, News printing, advertising printing, banknote printing, map printing, stationery printing, special printing, etc
the printing of books and magazines used to be letterpress printing. In recent years, lithography has been widely used
in the past, press printing used to be printed by relief rotary mac
hine, which is fast and has large printing volume. In recent years, in order to meet the needs of color, lithography or photographic intaglio rotary printing is used
advertising printing, including color pictures, pictorials, posters, etc. most of them are printed in lithography, and sometimes in relief, intaglio or hole printing
the printing of banknotes and other securities is mainly gravure printing, supplemented by letterpress and lithography
photolithography is suitable for map printing. Because of its large size, high precision, more color registration, less printing volume, and most of the originals are monochrome
stationery printing, such as envelopes, stationery, invitations, business cards, account books, operation books,…, must be low-cost and printed in large quantities, so the quality is inferior, so relief printing is often given priority
packaging and printing, such as all kinds of salty and sweet vegetables, candy, biscuits, preserves, corrugated boxes for various types of packaging and wallpaper for room decoration, are mostly printed in photogravure
special printing, such as bottle and can, bronzing, embossing, hose, electronics, circuit, label, ticket and foil

You may also like

Leave a Comment

Soledad is the Best Newspaper and Magazine WordPress Theme with tons of options and demos ready to import. This theme is perfect for blogs and excellent for online stores, news, magazine or review sites.

Buy Soledad now!

Edtior's Picks

Latest Articles

u00a92022u00a0Soledad.u00a0All Right Reserved. Designed and Developed byu00a0Penci Design.