In modern printing technology, what important type of plate is created using a nickel salt solution?

A photopolymer plate is an important type of plate created using a nickel salt solution. These plates are commonly used in modern printing technology for their ability to accurately reproduce fine details and deliver high-quality prints. The nickel salt solution is used in the process of creating the plate by exposing it to ultraviolet light, which hardens the photopolymer material and creates the desired images for printing.