Offset printing also called as offset
lithography printing is the highest valuable flat printing
technique involved. It is a large scale printing technique which includes
the ink from metal plate to be transferred to the rubber blankets and then to
the printing media. The paper on which it’s printed doesn’t come in direct
contact with metal plate; it’s the rubber blanket that readily imprints into
the rough print media surface.
Lithography is the principle of
repulsion of oil and water. This is the basic technique used in offset
printing, where greasy ink sticks to the printing areas and hot water to the
nonprinting areas which results in rejection of the ink. The metal plate used
in the technique is usually made of zinc or aluminium with surface coated with
photosensitive materials. This type of
printing is good for printing business cards, brochures, pamphlets, booklet,
letterheads, flyers etc. There are many offset
printing services in Pune that are very much popular in printing
flyers and brochures. Many of the booklets and weekly and monthly magazines
from great publishers are processed by this offset printing technique itself.
There are two types of offset
printing technique.
- Sheet-fed offset printing
In this technique individual pages
are fed into the machine one by one. The pages are either pre-cut or trimmed
after publication
- Web offset printing
This method involves larger and high
equipped machines where pages are fed in rolls and after printing the pages are
trimmed accordingly.
Advantages of offset printing
include:
- High quality and consistency in images
- Can be utilized for small, middle level and high volume jobs
- Real economical method as it runs long in the estimated time
Today the method of offset
printing has changed with the input of three rotating cylinders:
which includes plate cylinder, blanket cylinder and an impression cylinder. The
moisture plate cylinder comes in contact with ink, where and the ink in the
printing area is transferred to the rubber blanket and which is then passed over
to the print media rolling over the impression cylinder.
Social Networking Trends for Offset Printing
services:
No comments:
Post a Comment