What’s the Difference?
Offset lithography is the most common high volume commercial printing technology. In offset printing, the desired print image is burned onto a plate and is then transferred (or offset) from the plate to a rubber blanket, and then to the printing surface. The lithographic process is based on the repulsion of oil and water. The image to be printed gets ink from ink rollers, while the non printing area attracts a film of water, keeping the non printing areas ink-free.
Digital printing eliminates many of the mechanical steps required for conventional printing, including making film (film is rapidly becoming a thing of the past with most new presses being CTP – computer to plate) and making plates. Don’t make the mistake of thinking that digital print is the same as running copies from your PC to a laser or inkjet printer, the digital print presses used by printers are much more sophisticated than that! [Read more…]