Generally printing is a process using a printing press, we can able to reproduce any text or image, namely with ink on the paper. It is very often carried out as an essential part of transaction and publishing printing. In many of the country this printing services are carried out as a large-scale industrial process. The earliest form being practiced was the woodblock printing that china people exhibited. Now the modern technology has driven up a perfect scope in developing this technology as a service.
Modern printing technology:
In the latest survey, it is being recorded as over 45 trillion pages are getting printed every year.
There are two main categories in these printing services.
1. Offset press:
This is broadly use technology where the process goes like this; the inked image is just transferred from that of a plate to the rubber blanket and at last to the printing surface. The process is that the lithographic process, which basically flows out oil and water, it produces the image carriers on which the image gets printed from the ink rollers, whereas the non-printing are remains free. Right now, this technique is being predominantly used for printing the books and newspapers.
Some of the other techniques include:
• Flexography.
• Dye transfer.
• Laser printing.
• Pad printing.
• Rotogravure.
• Screen-printing.

2. Gravure:
It uses the technique of intaglio printing. In the process the image should be printed, is made up of very small depressions in the place of the printing plate. All the cells are filled with ink and the excess that is produced is scraped out of the surface by using the doctor blade, then with the rubber-covered roller which presses the paper on to the surface and thereby making a contact with the ink on the cells. These printing are usually made out of copper and are produced by the digital engraving, which is also called as the laser etching.