Printing is a process of transferring an image or a text on a specific substrate. There are different types of printing technologies in use these days. The most important types are rotogravure printing, lexicographic printing, and off-set printing. In rotogravure printing technique the image is engraved on a rotogravure cylinder the rotogravure cylinder then picks up the ink from an ink tray, which is then transferred on the substrate under pressure being exerted by an impression roller.
The other type of printing is lexicographic printing which is more like a stamping process in this case the ink is applied on a photopolymer plate the plate is made of special polymer which is then chemically etched. After etching of the design the photopolymer is given some ink through a roller called the anilox roller. Once the ink is received it is transferred to the substrate through a main drum. The quality of the print depends upon the ink viscosity, ink hardness of the drum and the pressure exerted by the photopolymer. The inks used in lexicographic and rotogravure process is solvent based ink however in offset printing process the ink sued is water based in which we have a blanket cylinder mounted with a blanket on which design is made.
The other type of printing is lexicographic printing which is more like a stamping process in this case the ink is applied on a photopolymer plate the plate is made of special polymer which is then chemically etched. After etching of the design the photopolymer is given some ink through a roller called the anilox roller. Once the ink is received it is transferred to the substrate through a main drum. The quality of the print depends upon the ink viscosity, ink hardness of the drum and the pressure exerted by the photopolymer. The inks used in lexicographic and rotogravure process is solvent based ink however in offset printing process the ink sued is water based in which we have a blanket cylinder mounted with a blanket on which design is made.
