Q
how are plates made for offset printing
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Offset printing plates are created through a process that starts with a digital image. This image is separated into four primary colors (CMYK: Cyan, Magenta, Yellow, and Key/Black) during prepress. Each color represents a separate plate that will be used in the printing process. The plates are usually made from aluminum and prepared to be photo-sensitive. Using a computer-to-plate (CTP) system, the separated images are digitally exposed onto the plates with lasers, a process that accurately and quickly transfers the image details. The exposed areas become ink-receptive, while the non-exposed areas are treated to attract a film of water, repelling ink. These plates are then mounted onto the rollers of an offset press. During printing, ink adheres only to the image areas, while the non-image areas attract a water-based film, thus preventing ink from transferring. This makes offset printing exceptionally good for high-volume, high-quality print jobs.
You May Like
You May Like
Q&A
- •how to dye clear plastic
- •polyvinyl chloride effects on humans
- •what size end mill for cutting polypropylene
- •how to print on clear plastic rolls with inkjet
- •how to produce of coal tar dyes
Popular Information