Printing Technology

Haripriya

Content Intern at The Fishbowl Network
I'm Hari, doing metallurgical and materials engineering in
NIT-T. I express my ideas in my articles . The reviews for the articles are always welcome from each and everyone. My other interests are music , chess. I'm little bit talkative but still good at my works. In short , a keen learner and friendly character...

Latest posts by Haripriya (see all)

In ancient times, printing was done in the way which was termed as lithography(http://thefishbowlnetwork.com/blog/lithography/). Today’s printing is the modern lithographic process. The development in printing has extended to micro lithography and nano lithography. The method used for printing of books is also  lithography, which is referred as offset lithography.

Offset lithography depends on photographic processes. Flexible aluminium, polyester or paper printing plates are used instead of stone tablets, as described in the “lithography”.  Modern printing plates have rough surface and are covered with photosensitive emulsion. A photographic negative of desired image is placed in contact with the emulsion and plate is exposed to ultraviolet light. The emulsion shows reverse of negative image. This plate is fixed to cylinder on a printing press. Now, water is applied over it. This is repelled by emulsion of image area. A rubber blanket covered in a cylinder, squeezes away water, picks up the ink and transfers it to paper with uniform pressure. This method is known as offset lithography.

Printing technology has developed and thus the progress are digital printing, 3-D printing and gang run  printing. It would be difficult to imagine the world without the printing technology and it’s development. Books would have been still as manuscripts. Newspaper could not be published daily. Periodicals would not have reached us on the precise period. Johannes Gutenberg is the one who is behind all the development in this printing technology.

Share this post
facebooktwittergoogle_plusredditpinterestlinkedinmailby feather