Pressure printing and non-pressure printing.

1.Contact imprint l'impression Contact imprint l'impression is a l'impression technology that uses a l'impression plate or other methods to transfer the graphic l'information on the attachment to the substrate on the basis of pressure . It uses l'impression ink or coloring pigments to reproduce images and text on the surface of paper or other materials through l'impression machinery and équipement . According to the l'impression process , the l'impression process usually includes five elements : accessories , l'impression plates , substrates , inks , and l'impression machinery . According to the form of l'impression plate , contact imprints / imprinted l'impression mainly to include four categories : letterpress , intaglio , lithography , and stencil l'impression . According to l'impression procedures , the above-mentioned multiple l'impression methods is different to/from direct l'impression and indirect l'impression . There are also different application areas . General customs in China is divided into news l'impression , publishing l'impression (including books and magazines ) , packaging and decoration l'impression , securities l'impression , stationery l'impression , and parts l'impression .

2 . Non-contact l'impression Non-contact l'impression , also known as pressureless l'impression , is a l'impression technology based on pressureless action . It is a new type of l'impression form that adopts the development of electronic computer output technology . It does not use traditional l'impression plates , but uses heat , static electricity , magnetism or inkjet technology under computer control to envoyer toner or ink droplet’s to the surface of the substrate ; or make special paper colored to form clear graphics . Non-contact l'impression has the characteristics of reliable operation , no noise , small équipement , fast speed , convenient operation and wide application range . It is especially suitable for copying and outputting hard copies of l'information network systems in an office environment , providing a small number of various documents and materials . Pressureless l'impression includes laser (electrostatic ) l'impression , inkjet l'impression , thermal l'impression and magnetic l'impression . Among them , the first two are currently widely used pressureless l'impression methods .